Ohio Ic Incubator

Ohio® Care Plus®

Series 1000/2000IncubatorOperation and Maintenance Manual

CI.2

3.00

1

Table of Contents

v v6600-0291-000 2/24/97

User ResponsibilityThis Product will perform in conformity with the description thereof contained in thisoperating manual and accompanying labels and/or inserts, when assembled, operated,maintained and repaired in accordance with the instructions provided. This Productmust be checked periodically. A defective Product should not be used. Parts that arebroken, missing, plainly worn, distorted or contaminated should be replaced immedi-ately. Should such repair or replacement become necessary, Ohmeda recommendsthat a telephone or written request for service advice be made to the nearest OhmedaRegional Service Center. This Product or any of its parts should not be repaired otherthan in accordance with written instructions provided by Ohmeda and by Ohmedatrained personnel. The Product must not be altered without the prior written approval ofOhmeda’s Quality Assurance Department. The user of this Product shall have the soleresponsibility for any malfunction which results from improper use, faulty maintenance,improper repair, damage, or alteration by anyone other than Ohmeda.

Important This manual is subject to periodic review. Customers are cautioned to obtain andconsult the latest manual revision. Suggestions are also invited from customers forconsideration by Ohmeda in connection with these periodic reviews. Customersmay contact product service at 1-800-345-2755 or by writing to Ohmeda at P.O.Box 7550, Madison, WI 53707.

CAUTION w U.S. Federal and Canadian law restrict this device to sale by or on the order ofa licensed medical practitioner.

6600-0291-000 02/24/97

Table of Contents

i i6600-0291-000 2/24/97

Table of ContentsGeneral Precautions

Warnings ........................................................................................................................ iii

Cautions ......................................................................................................................... iii

1/Introduction

Introducing the Ohio Care Plus Incubator ....................................................................1-1

2/Getting Started

Mounting the Care Plus on the cabinet ........................................................................2-2

3/General Information

Operating modes .........................................................................................................3-1The air control (manual) mode ............................................................................3-1The optional patient control mode .......................................................................3-2

Controls and displays ..................................................................................................3-4

Alarms ..........................................................................................................................3-6

Cable connections and mechanical controls .............................................................3-10

4/Preoperative Checkout Procedure

Mechanical checks ......................................................................................................4-1

Accessory checks ........................................................................................................4-2

Controller checks .........................................................................................................4-3

Operational checks ......................................................................................................4-6

5/Using the Incubator

Basic operating procedure ...........................................................................................5-2

Responding to alarms ..................................................................................................5-5Air circulation alarm.............................................................................................5-6Control temperature alarm ..................................................................................5-6High air temperature alarm .................................................................................5-6Patient temperature alarm (Patient control models only) ....................................5-7Probe failure alarm (Patient control models only) ...............................................5-7Power failure alarm .............................................................................................5-8System failure alarm ...........................................................................................5-8

Additional operating procedures ..................................................................................5-8Accessing the patient ..........................................................................................5-8Raising and lowering the hood ..........................................................................5-10Trendelenburg and reverse Trendelenburg positioning-tilt handle models .......5-11Administering oxygen ........................................................................................5-12Using the optional humidifier .............................................................................5-14

Table of Contents

ii ii6600-0291-000 2/24/97

6/Maintaining the Incubator

Cleaning schedule .......................................................................................................6-1

Disassembling the incubator for a complete cleaning .................................................6-2

Cleaning and disinfecting individual components ........................................................6-6Humidifier ............................................................................................................6-6Patient Probe ......................................................................................................6-7Controller assembly ............................................................................................6-8Porthole ...............................................................................................................6-9Compartment Temperature Probe ......................................................................6-9Other Clear Plastic Parts .....................................................................................6-9Lower unit (mattress, mattress tray, base platform cover, etc.) ..........................6-9Oxygen inlet ........................................................................................................6-9Cabinet ................................................................................................................6-9

7/Service Procedures

Repair Policy ................................................................................................................7-1

Maintenance schedule .................................................................................................7-1Operator maintenance ........................................................................................7-1Service maintenance...........................................................................................7-2

Troubleshooting incubator problems ...........................................................................7-2

8/Illustrated Parts

Base platform and cover assembly ..............................................................................8-1

Appendix

Care Plus specifications ................................................................................................. 1Electrical specifications .......................................................................................... 1Performance specifications .................................................................................... 2Safety specifications .............................................................................................. 4Environmental specifications .................................................................................. 4Electromagnetic Compatibility (EMC) Specifications ............................................. 4Mechanical specifications ...................................................................................... 5

Glossary .......................................................................................................................... 6

Warranty

Table of Contents

iii iii6600-0291-000 2/24/97

wWarnings

Before using the Ohio Care Plus Incubator, read through this entire manual. As with allmedical equipment, attempting to use this device without a thorough understanding ofits operation may result in patient or user injury. This device should only be operated bypersonnel trained in its operation under the direction of qualified medical personnelfamiliar with the risks and benefits of this type of device. Additional precautionsspecific to certain procedures are found in the text of this manual.

Complete the “Pre-operative Checkout Procedures” section of this manual beforeputting the unit into operation. If the incubator fails any portion of the checkout proce-dure it must be removed from use and repaired.

Do not use the Care Plus in the presence of flammable anesthetics; an explosionhazard exists under these conditions.

Always disconnect the power before performing service or maintenance proceduresdetailed in this manual. Apply power only if you are specifically instructed to do so aspart of the procedure.

Thoroughly air dry the incubator after cleaning it with flammable agents. Small amountsof flammable agents, such as ether, alcohol or similar cleaning solvents left in theincubator can cause a fire.

wCautions

Only competent individuals trained in the repair of this equipment should attempt toservice it as detailed in the Service Manual (Stock Number 6600-0292-000).

Detailed information for more extensive repairs is included in the service manual solelyfor the convenience of users having proper knowledge, tools and test equipment, andfor service representatives trained by Ohmeda.

General Precautions

Table of Contents

iv iv6600-0291-000 2/24/97

Notes

1-1

1/Introduction

1-16600-0291-000 2/24/97

1/Introduction

In this sectionIntroducing the Ohio® Care Plus® Incubator ...............................................................1-1

How to use this manual ...............................................................................................1-2

Introducing the Ohio Care Plus Incubator

Thank you for selecting the Ohio Care Plus Incubator. The Care Plus adapts to yourpatient’s needs with: manual and optional patient operating modes; an optionalpassive humidifier; an oxygen inlet; removable inner wall; and zero or ten degreebed positions.

From its comprehensive series of alarms and quiet operation, to unique oval portholesfor greater lateral access, the Care Plus offers both security and convenience. Itsfamiliar styling integrates into the existing nursery environment.

Ohio® Care Plus® Incubator is a registered trademark of Ohmeda.

Figure 1-1The Ohio Care Plus Incubator

CI.2

3.00

1

1-2

1/Introduction

1-26600-0291-000 2/24/97

Care Plus technology

The Care Plus combines microprocessor technology, a unique hood design with frontto back air flow, and an optional humidifier to stabilize patient temperature:

• The microprocessor responds immediately to temperature changes, minimizing thetemperature fluctuations of older, analog incubators.

• Heated air circulated along the hood wall, or between the optional double walledhood, warms the surfaces surrounding the infant, reducing radiant heat loss.

• Limiting air movement around the infant reduces convective and evaporative heatloss. Humidifying the air further reduces evaporative heat loss.

WARNING w Before using the Ohio Care Plus Incubator, read through this entiremanual. As with all medical equipment, attempting to use this devicewithout a thorough understanding of its operation may result in patient oruser injury.

What warnings and cautions mean

No matter what part of this manual you are using, you should always be familiar withthe cautions and warnings that appear throughout this manual. Warningsalert you to conditions and actions that can cause injury. Cautions point outconditions or actions that may damage the incubator.

Please also take a moment to review the User Responsibility Statement on the insideof the front cover; it describes what is expected of you to maintain the Care PlusIncubator. Also read the Warranty on the back cover; it outlines Ohmeda’s responsibil-ity in case of a functional defect.

Symbols used in this manual

An attention symbol in the left hand column alerts you to a warning or a caution in thetext. The attention symbol looks like this:

w

Just as on the controller panel, we use arrow heads to represent the temperatureswitches:

M Increase the control temperature

? Decrease the control temperature

2-1

2/Getting Started

2-16600-0291-000 2/24/97

2/Getting Started

WARNINGS w Safely mounting or dismounting the Care Plus Incubator requires twopeople. Remove the controller unit before mounting or dismounting theincubator.

w Do not place the incubator in direct light. Exposing the infant or theincubator to direct radiation from the sun or incandescent lighting maycause the infant to overheat.

Items not covered in this chapter

If your system uses any accessories or external monitoring devices (phototherapy light,blender, etc.), follow the mounting instructions in the operation andmaintenance manual for the device.

In this sectionMounting the Care Plus on the cabinet ........................................................................2-2

2-2

2/Getting Started

2-26600-0291-000 2/24/97

Mounting the Care Plus on the cabinet

WARNING: w Safely mounting or dismounting the Care Plus Incubatorrequires two people.

1. Install the four mounting knobs.

WARNING w If mounting hardware is not securely fastened, the incubator could tip offthe stand.

CAUTION w When handling the controller, avoid bumping the fan or the heater. If theseitems are knocked out of alignment, the fan can grate against the heater or thebase.

2. Install the controller. Lift the levers on the controller and slide it into the incubatoras shown in Figure 2-2. Push the levers down to lock the controller in place.

3. Refer to section 4 in this manual to perform preoperative checkout procedures.

Figure 2-1Mounting the Care Plus Incubator

MountingKnob

CI.2

3.00

2

Controller

ControllerLever

3-1


3-16600-0291-000 2/24/97


In this sectionOperating modes .........................................................................................................3-1

The air control (manual) mode ............................................................................3-1The patient control (servo) mode ........................................................................3-2

Controls and displays ..................................................................................................3-4

Alarms ..........................................................................................................................3-6

Cable connections and mechanical controls .............................................................3-10

Operating modes

The Care Plus has two operating modes: the air control (or manual) mode, whichadjusts heater output to achieve a target air temperature; and the patient control (orservo) mode, which adjusts the incubator temperature to achieve a target infant skintemperature. In both modes, the target temperature appears in the Control Tempera-ture display on the front of the controller and can be adjusted using the temperatureswitches (? and M).

To distinguish between control temperatures in the different modes, this manual usesthe term “air control temperature” for the control temperature in the air control modeand the term “patient control temperature” for the control temperature in the patientcontrol mode.

Note: This section briefly mentions displays, controls, and alarms that play a significantrole in the air control and patient control modes. For further information, refer to theappropriate section “Controls and displays” or “Alarms.”

The air control (manual) mode

The air control mode compares the air temperature to the air control temperature todetermine if the heater should be switched on or off. If the air temperature is too high,the heater switches off. If the air temperature is too low, the heater switches on.

Air control temperature

The air control mode lets you enter air control range temperatures from 20to 37°C (68.0 to 98.6°F) using the temperature switches (? and M). Pressingthe Override switch when the air control temperature is 37°C (98.6°F) letsyou increase the air control temperature to 39.0°C (102.2°F).

Control temperature alarm

The control temperature alarm triggers if the air temperature exceeds a normal rangeair control temperature by more than 1.5°C (2.7°F) or if the air temperature falls morethan 3.0°C (5.4°F) below the air control temperature. For air control temperaturesabove 37°C, the control temperature alarm triggers if the air temperature exceeds theair control temperature by more than 1.0°C (1.8°F).

To avoid unnecessary alarms, the control temperature alarm does not trigger during thefirst 30 minutes after power is switched on and for 15 minutes after you change the aircontrol temperature or enter the air control mode from the patient control mode. Duringthis period, normal incubator alarm routines verify proper operation and switch off theheater if the air temperature exceeds certain default safety limits: 38°C (100.4°F) forcontrol temperatures below 37°C (98.6°F) and 40°C (104.0°F) for control temperaturesabove 37°C.

3-2


3-26600-0291-000 2/24/97

Patient probe (Care Plus 2000 only)

In the air control mode, the patient probe has no affect on incubator opera-tion; connecting the probe simply displays the patient temperature for yourinformation.

The patient control mode (Care Plus 2000 only)

In the patient control mode, the control temperature (patient control temperature)corresponds to the desired patient skin temperature. To reach an incubator tempera-ture that will maintain the desired skin temperature the incubator control system loopsthrough the program shown in Figure 3-1. This program compares the patient controltemperature setting to the actual patient temperature and raises or lowers the incubatortemperature depending on whether the infant is hot or cold. The incubator temperaturethat maintains the desired skin temperature is referred to as the DET (Desired Environ-mental Temperature). The maximum DET that the incubator will maintain is 39.0°C(102.2°F).

You can reduce the time required to reach the DET by preheating the incubator in theair control mode before entering the patient control mode. The closer the air tempera-ture gets to the actual air temperature required to maintain the desired infant skintemperature, the sooner the incubator will stabilize the infant’s temperature in thepatient control mode. When you switch to the patient control mode, the previous aircontrol temperature becomes the initial DET. The incubator automatically adjusts theDET using the three stage patient control mode program, shown in Figure 3-1.

The first stage of the loop checks to make sure that the patient probe is reporting areasonable patient temperature before making any adjustments. If the patient tempera-ture is less than 30°C (86.0°F) or above 42°C (107.6°F), the incubator assumes thatthe patient probe has detached from the infant, the patient temperature alarm triggers,the heater shuts off, and the DET remains unchanged.

The second stage of the loop calculates the PTG (Patient Temperature Gradient), thedifference between the actual patient temperature and the selected patient controltemperature, to determine if the infant is hot or cold. If the infant is too cold (PTG < -0.5°C), the heater switches On. If the infant is too hot (PTG > 0.5°C), the heater shutsdown. The patient temperature continues to be checked every three seconds.

The third stage calculates the change in the patient temperature over the previous tenminute period. If the infant temperature differs from the patient control temperaturesetting by 0.2°C or more, and this difference has not decreased by at least 0.2°Cduring the last ten minute period, the DET will be adjusted. To prevent large incubatortemperature swings and to allow time for the patient to respond to changes in theincubator temperature, the magnitude of the change in the DET depends on the PTG.

Patient control temperature range

The patient control mode lets you enter air control temperatures from 35.0 to 37.0°C(95.0 to 98.6°F) using the temperature switches (? and M). An internaladjustment lets you increase the patient control temperature to 37.5°C (99.5°F).

Patient temperature alarm

Patient temperature alarm monitoring runs concurrently with the control loop. A patienttemperature alarm triggers if the patient temperature differs from the patient controltemperature by more than 1.0°C (1.8°F), or 0.5°C (0.9°F) with an internal adjustment.Additional alarm routines verify proper operation and switch off the heater if the airtemperature exceeds 40.0°C (104.0°F).

3-3


3-36600-0291-000 2/24/97

Start

Is the PT <30°C?

Is the PT >42°C?

Is the PTG <-0.5°C?

Is the PTG > 0.5°C?

Yes

Infant is hot

Supply no heat

Yes

Infant is cold

Yes

Assume probe is dislodged

1) Switch heater off2) Activate alarm3) Keep DET constant

Yes

Assume probe is dislodged

No

No

No

Have 10 min passed?

No

Supply maximum heat

No

Repeat first stage

No

Infant is cold

Yes

Infant is hot

Is the PTG≥0°C?

Is the ∆PT≤ -0.2°C?

Is the ∆PT≥ 0.2°C?

DET change = 0

Yes Yes

DET PTG Change-0.5°C 0.3°C-0.4°C 0.3°C-0.3°C 0.2°C-0.2°C 0.1°C-0.1°C 0.0°C-0.0°C 0.0°C

DET PTG Change0.5°C -0.3°C0.4°C -0.3°C0.3°C -0.2°C0.2°C -0.1°C0.1°C -0.0°C0.0°C -0.0°C

No No

Calculate new DET

New DET = Old DET + Change

PT = Patient TemperaturePCT = Patient Control TemperaturePTG = PT-PCT∆PT = Current PT - PT 10 min. previous

Yes

Start third stage

Stage 1

Stage 2

Figure 3-1Patient control mode logic diagram

CI.0

2.06

8

Stage 3

3-4


3-46600-0291-000 2/24/97

Controls and displays

Figure 3-2Controls and displays

Patient temperature

During normal operation, the patient temperature display shows the temperaturesensed at the patient probe tip, in Celsius or Fahrenheit. The patient probe must beproperly connected to the incubator and the infant for an accurate patient temperaturemeasurement.

Temperatures between 22.0 and 42.0°C (71.6 and 107.6°F) are displayed to thenearest 0.1°C or °F. Temperatures above this range result in a HHHH temperaturedisplay. Temperatures below this range cause LLLL to be displayed.

Depressing the Enable switch for more than five seconds tests the temperature moni-toring system. If the monitoring system is functioning correctly, 25.05°C ±0.2°C re-places the patient temperature during the test.

Air temperature

During normal operation, the air temperature display shows the internal incubatortemperature.

Air temperatures between 5 and 50.0°C (41 and 122°F) are displayed to the nearest0.1°C or °F.

Depressing the Enable switch for more than five seconds tests the temperature moni-toring system. If the monitoring system is functioning correctly, 37.95°C ±0.2°C re-places the air temperature during the test.

CI.2

3.00

3

>37°C

°F / °C

100%75%50%25%

188.8 188.8 188.888 8

CI.2

3.00

4

Care Plus ® 1000

Care Plus ® 2000

>37°C

°F / °C

100%75%50%25%

188.8 188.88 8

3-5


3-56600-0291-000 2/24/97

Control temperature

During normal operation, the control temperature display shows the control tempera-ture (air or patient) selected by the operator. When you first power up the unit or if youenter the patient control mode, the control temperature flashes and a prompt tonesounds until you enter a control temperature.

In the air control mode, the control temperature range is 20 to 39.0°C (68 to 102.2°F).Air control temperatures above 37.0°C (98.6°F) require the use of the Override switch.

In the patient control mode, the control temperature range is 35 to 37°C (95.0 to98.6°F).

Note: Qualified service personnel can configure maximum patient temperature to37.5°C.

During a system failure alarm, the appropriate error code appears in the control tem-perature display.

Depressing the Enable switch for more than five seconds replaces the control tempera-ture with the percentage of the rated line voltage supplied by the power outlet.

Four LED displays illuminate to show the average heater power overthe last minute as a percentage of the maximum output (100%, 75%,50% and 25%). In the example, the average heater power is 75% of themaximum power.

The alarm silence switch has two functions. Pressing the switch si-lences all audible alarms except for the system failure and power failurealarms. The length of the alarm silence period depends on the alarmcondition as detailed in the “Alarms” section. The alarm silence indica-tors (next to the switch) illuminates for the duration of the alarm silenceperiod.

Depressing alarm silence switch for five seconds or longer illuminatesall control panel LEDs and causes “188.88” to appear in the tempera-ture displays. The alternating, two tone alarm also activates.

The °F/°C switch changes the temperature displays from degreesCelsius to degrees Fahrenheit and vice versa.

Pressing the Enable switch activates the temperature switches (? andM), the mode switches, and the Override switch for approximately 12seconds. The enable indicator illuminates when these switches areactive. If the indicator goes out, you must press the Enable switch againto reactivate these switches.

Pressing the Air Control switch selects the air control mode of operationand illuminates the Air Control indicator (next to Control Temperaturedisplay). To prevent accidental mode changes, you must press theEnable switch to activate the Air Control switch. The audible alarmsounds briefly when the mode of operation is changed.

Note: The incubator defaults to the air control mode when power is firstapplied.

100%75%50%25%

°F / °C

3-6


3-66600-0291-000 2/24/97

The Override switch lets you select air control temperatures higher than37.0°C (98.6°F). To raise the air control temperature above 37°C,increase the control temperature to 37°C, press the Enable switch,press the Override switch, and then increase the air control tempera-ture. The maximum set temperature is 39°C. The override indicatorremains illuminated to indicate that the air control temperature exceeds37.0°C.

Pressing the Patient Control switch selects the Patient control mode ofoperation and illuminates the Patient Control indicator (next to ControlTemperature display). To prevent accidental mode changes, you mustpress the Enable switch to activate the Patient Control switch. Theaudible alarm sounds briefly when the mode of operation is changed.The first time that you select the patient control mode, the controltemperature display also flashes and an operator prompt tone soundsuntil you enter a control temperature.

These switches adjust the control temperature. To prevent accidentalchanges, you must press the Enable switch to activate these switches.These switches remain active as long as the enable indicator is illumi-nated, approximately 12 seconds after the last switch is pressed.

The power switch is located on the right side of the controller assembly,adjacent to the power cord socket. It switches the incubator power Onand Off. Two circuit breakers, located within the controller, limit themaximum current drawn by the incubator. If the circuit breaker trips,remove the unit from use and contact qualified service personnel forrepair.

Alarms

Note: All silenceable alarms are preceded by a 30 second operator prompt tone.

Seven LEDs on the left side of the control panel illuminate for various alarm conditions.Each visual indicator is accompanied by an audio signal.

Figure 3-3Alarm indicators

CI.0

2.21

5

>37°C

Patient Temp

Control Temp

High Air Temp

Air Circulation

Probe Failure

System Failure

Power Failure

Alarm

3-7


3-76600-0291-000 2/24/97

What the audible tone tells you about the alarm

The audio tone varies with the alarm’s priority: power failure and system failure alarmscannot be silenced; an alternating two tone alarm indicates a critical alarm that triggersautomatic heater shutdown; an intermittent single tone alarm is used for all otheralarms.

Silencing an alarm

With the exception of the power and system failure alarms, all audio alarms can besilenced by pressing the Alarm Silence switch. At the end of the silence period, theaudio alarm reactivates unless the alarm condition has been resolved. The alarmsilence period ends prematurely if another alarm triggers. When two or more alarmstrigger, their respective indicators illuminate, and the audio signal sounds for thehighest priority alarm.

Patient temperature alarm (Care Plus 2000 only)

The patient temperature alarm is only active in the patient control mode of operation.The alarm activates when the difference between the patient temperature and thecontrol temperature is greater than 1.0°C (1.8°F) and resets when the patient tempera-ture returns to within 0.8°C (1.4°F) of the control temperature.

Patient probe readings above 42.0°C or below 30.0°C trigger an alternating two tonealarm and automatic heater shutdown.

Note: Service personnel can configure the alarm to trigger if the difference exceeds0.5°C and to reset when the difference is less than 0.3°C.


The control temperature alarm is only active in the air control mode. The alarm triggerswhen the air temperature exceeds the control temperature by more than 1.5°C, (2.7°F)or falls more than 3.0°C (5.4°F) below the control temperature. This alarm is inactivefor 30 minutes after the incubator is first switched on. It is also inactive for 15 minutesafter either a mode or control temperature change.

High air temperature alarm

The high air temperature alarm warns of abnormally high incubator air temperaturesand automatically switches Off the heater. This alarm is produced by a circuit that isindependent of microprocessor temperature monitoring.

The high temperature alarm is not self resetting. After the alarm has been activated, itmust be manually reset even if the alarm condition has been resolved.

The alarm activation temperature varies with the mode of operation:

Mode Control Temperature Alarm Limit

Patient Control All Settings 40.0°C (104.0°F)

Air Control 20.0 to 37.0°C 38.0°C (100.0°F)37.0° to 39.0°C 40.0°C (104.0°F)

Air circulation alarm

The air circulation alarm triggers when air flow inside the unit ceases or is restricted.This could be caused by a blower motor failure, or a missing fan. When this alarmoccurs, the heater is automatically shut down.

3-8


3-86600-0291-000 2/24/97

Probe failure alarm

In either operational mode, a disconnected air temperature sensor triggers the probefailure alarm. In the patient control mode, the probe failure alarm can also be caused byan open or a short circuit in the patient probe.

When a probe failure alarm triggers, the heater automatically shuts down. The tem-perature displays indicate the cause of the alarm; if the air temperature sensor isdisconnected, the air temperature display flashes 00.0; if the patient probe is discon-nected or malfunctioning, the patient temperature display flashes HHHH or LLLLrespectively.

System failure alarm

The system failure alarm automatically shuts off the heater and triggers an alternatingtwo tone alarm if an electrical failure is detected. This alarm cannot be silenced. Anerror code may replace the control temperature to give specific information on thenature of the failure.

Power failure alarm

A battery operated power failure alarm activates when the external power source failsor is accidentally disconnected. The battery powers the nonsilenceable audible alarmand the microprocessor for up to 10 minutes during a power failure. If power is restoredwithin 10 minutes, the previous mode of operation and control temperatures arerecalled.

3-9


3-96600-0291-000 2/24/97

Audio Alarm HeaterAlarm* Signal † Mode Possible Causes Silence Status

Probe Failure Alternating All Disconnected air 1 min. Offtwo tone temperature sensor

Alternating Pat. Patient probe disconnected, 1 min. Offtwo tone open or shorted (patient

control mode)

Control Intermittent Air Air temperature is 1.5°C 15 min. @Temperature single tone above or 3.0°C below control

temperature

System Alternating All Electrical malfunction or Cannot OffFailure two tone excessive EMI^ in the silence

hospital environment. Notethe error code and switch thepower off. Wait ten secondsand switch the unit back on.If the system failure reoccurs,remove the incubator from use.

Air Circulation Alternating All See the “Troubleshooting” 5 min. OffFailure two tone section in Chapter 7.

Patient Intermittent Pat. The difference between the 15 min. @Temperature single tone patient temperature and the(Care Plus control temperature exceeds 2000 only) 1.0°C&

Intermittent Pat. The difference between the 5 min. @single tone patient temperature and the

control temperatures exceeds2.0°C

Alternating Pat. Patient temperature is above 1 min. Offtwo tone 42.0°C or below 30.0°C

High Air Alternating All In the air control mode without 5 min. OffTemperature two tone override: the air temperature

exceeds 38.0°C

In the patient control or the aircontrol mode with override: theair temperature exceeds 40.0°C

Power Failure Intermittent All Power outage while the power Cannot Offsingle tone switch is on. silence

* If a nonsilenceable alarm is present with no alarm indicator illuminated and the heater is shut down, a microprocessorfailure may have occurred.

^ Electro Magnetic Interference from other electrical equipment.

@ Heater output is dependent on the patient temperature and the control temperature setting, in the patient control mode andon the control temperature setting in the air control mode. Output will also vary with the ambient room temperature, patientcondition, etc.

& Service personnel can adjust patient alarm to trigger if the difference exceeds 0.5°C.

† All silenceable alarms are preceded by a 30 second operator prompt tone.

3-10


3-106600-0291-000 2/24/97

MAX 1000 mL

MIN

Cable connections and mechanical controls

Air Temp. Sensor

Tilt Handle

Portholes

Front Door Latch

CI.2

3.00

4

Figure 3-4The front of the incubator

3-11


3-116600-0291-000 2/24/97

Patient ProbeConnector(Model 2000 only)

Tubing AccessCovers

ControllerLatches

CI.2

3.00

5

Figure 3-5The left side of the incubator

Iris Port Holes

Air TemperatureSensorConnector

Filter MountingKnobs(Cord Wrap)

HumidifierFill Tray(optional)

3-12


3-126600-0291-000 2/24/97

PowerSwitch

OxygenInlet

CI.2

3.00

6

Figure 3-6The right side of the incubator

Oxygen Inlet

OhmedaColumbia MD 21046 1801Made in USAU.S. Pat. No. 4,936,824

m

Oxygen Inlet: Ensure the Controlleris sealed and latched prior toadministering oxygen.

W WARNINGS: Fire hazard. Keep matches, lighted cigarettesand all other sources of ignition out of the room in which theincubator is located. Textiles, oils, and other combustibles areeasily ignited and burn with great intensity in air enriched withoxygen.Possible explosion hazard. Do not use in the presence offlammable anesthetics.Oxygen concentrations higher than 40% can increase the riskof retrolental fibroplasia. It is possible that even concentrationsof 40% or less (formerly considered safe) could be dangerousfor some infants. Therefore, arterial blood gas measurementsare extremely important for regulation of the concentration ofinspired oxygen when in an oxygen enriched environment.

Power must be disconnected prior to removing bed platform.Air Heater may be hot.The front door inner wall must be in place while a patientoccupies the incubator.Use only Ohmeda skin temperature probe.The humidity reservoir, or humidity reservoir plugs, must befully inserted for correct incubator operation, even if thehumidifier feature is not used.Use only hospital grade grounded power receptacle.W CAUTION: U.S. Federal and Canadian law restrcts thisdevice to sale by or on the order of a licensed medicalpractitioner.

Replace filter every three (3)months.

?

?

Oxygen Concentration Chart

NOTE: Oxygen concentration levels in thischart are intended as a reference only.Actual concentrations should be checkedwith an oxygen analyzer.

Oxygen input 5L/min 10L/min 15L/min

Average oxygenconcentration range 25-45% 35-55% 45-75%

Hood TiltRelease

Power Input

4-1


4-16600-0291-000 2/24/97


WARNINGS w Do not perform the preoperative checkout procedure while a patientoccupies the incubator.

w Complete the “Preoperative Checkout Procedures” section of this manualbefore putting the unit into operation. If the incubator fails any portion ofthe checkout procedure it must be removed from use and repaired.

In this sectionMechanical checks ......................................................................................................4-1

Accessory checks ........................................................................................................4-2

Controller checks .........................................................................................................4-3

Operational checks ......................................................................................................4-6

Mechanical checks

WARNING w Disconnect the power cord for the mechanical portion of the preoperativecheckout procedure.

1. Disconnect the power cord for the Care Plus Incubator for the mechanical portionof the preoperative checkout procedure.

2. Examine the power cord for damage. Replace the power cord if damage is evident.

3. Examine the incubator for obvious signs of damage.

4. Lock the two front casters and check that the unit is held in place. Release thelocks and verify the unit moves smoothly.

5. On the cabinet, open the cabinet front doors (if present) and verify that the fourincubator mounting knobs that attach the Care Plus to the cabinet are securedtightly in place.

6. Rotate both front door latches toward the center of the incubator, verify the redstamp is visible on both latches, and lower the door. Make sure that the inner wallis securely fastened to the door.

WARNING w The front door inner wall must be in place while a patient occupiesthe incubator.

4-2


4-26600-0291-000 2/24/97

7. Make sure that the front door is securely fastened to the incubator.

8. Check that the mattress and the mattress tray are properly installed. Verify that youmust lift the tray slightly to slide it out of the hood. This prevents the tray fromsliding out accidentally. Slide the mattress tray back into the hood.

9. Check the portholes. Open the portholes by pressing on the latch. The covershould swing open. If arm cuffs are installed, the elastic cuff band should fit into thegroove around the porthole without obstructing the cover. Close the porthole andverify that the mounting posts hold the porthole securely to the hood and that thelatch holds the porthole closed.

10. If the optional inner wall is installed, check that it is securely attached to the outerwall. To attach the inner wall, insert the two outside inner wall fasteners in the keyholes in the inner wall and slide them along the slots until the wall is in position.Lock the wall in place by snapping the two inside fasteners into the holes in themiddle of the inner wall.

11. Check that the tubing access covers are also installed on either side of the hood.

12. Check the hood tilt latch. Open the front door. Rotate the hood back approximately30 degrees, until it locks into position. Push against the hood and make sure that itis held in place. To close the hood, support the hood and release the hood latch bypushing back on the release tab. Gently lower the hood.

13. Close the front door and rotate the latches upward. Verify that the red stamp on thelatch is masked by the opaque patch on the hood.

14. Check the operation of the tilt mechanism. Rotate the tilt handles down to raise thebed until it locks in position, then rotate the handles up to return the bed to itsoriginal position.

15. Check that the controller is latched in position. The controller latches should be allthe way down, parallel with the sides of the controller.

16. Locate the humidifier fill tray (if present) on the underside of the base. Slide the filltray out. Verify that the seals are in good condition and that there is no obviousdamage to any of the humidifier components. Slide the humidifier back in and pushuntil it locks in position. Push it back until you feel slight resistance, then pushharder till it snaps into position. Otherwise, verify that the plugs are in place.

17. Unscrew the two filter mounting knobs on the rear of the incubator, lift off thevented filter cover panel and check the condition of the filter. If the filter is dirty, hasbeen used with an infectious patient, or has been in use for three months, it mustbe replaced. When you replace the filter, mark the date on the label supplied withthe replacement filter. Affix the label to the side of the incubator.

Accessory checks

1. Check that all accessories are securely mounted.

2. Check the operation of any accessories with reference to the appropriate operationand maintenance manuals.

3. Set up any required suction or gas supply systems. Check them for leaks asoutlined in the appropriate operation and maintenance manuals.

4-3


4-36600-0291-000 2/24/97

Controller checks

WARNING w Do not use the Care Plus in the Presence of flammable anesthetics; anexplosion hazard exists under these conditions.

Patient Control Mode and Patient Probe(available on Care Plus 2000 only)

Note: The Enable switch must be pressed to activate the temperature adjustment, theOverride or the control mode switches. These switches remain active as long as theenable indicator is illuminated (approximately 12 seconds after the last time one ofthese switches is pressed).

Note: If the patient probe reading is below 22.0°C (71.6°F), LLLL appears in place ofthe patient temperature.

Note: All silenceable alarms are preceded by a 30 second operator prompt tone.

1. Make sure the power cord is connected to the socket on the right side of thecontroller.

2. Plug the patient probe into the labeled connection on the left side of the controller.

3. Line up the air temperature sensor connectors. Plug the air temperature sensorinto the labeled connection on the left side of the controller.

4. Route the patient probe cord through the tubing access cover and place the patientprobe inside the incubator.

5. Plug the power cord into an appropriately rated power source (see rating plate forproper voltage, etc.).

6. Switch the power On and verify the following sequence:

a. An alternating two tone audible alarm sounds for approximately five seconds, allthe indicators illuminate and “188.88” appears in the three temperature dis-plays.

b. All indicators are extinguished except for the air control and the enable indica-tors. The temperature displays change to show from left to right:

Patient Air ControlTemperature Temperature Temperature

XX.XX (software 60H (AC frequency; 39.0°C (maximumversion, for ex:01.01) 50H for 50 Hz units) air control temperature)

c. An operator prompt tone sounds, and the control temperature display flashes“33.0°C”. The operator prompt tone will sound every two seconds until a controltemperature is entered by pressing one of the temperature switches (? or M).

d. If the system failure alarm sounds, note the error code and switch off the unit.Wait ten seconds and switch the unit back on. If the system failure alarm recurs,remove the incubator from use. Then, call for service.

4-4


4-46600-0291-000 2/24/97

7. Adjust the control temperature to silence the prompt tone.

8. Check display illumination and the audible alarm by depressing the Alarm Silenceswitch until all the indicator LEDs illuminate and “188.8” appears in the threetemperature displays (approximately five seconds). An audible alarm will sound.

9. Check the Enable switch. Press the Enable switch. The enable indicator shouldilluminate and go out after approximately 12 seconds. Verify that pressing the tem-perature switches (? and M) has no effect when the enable indicator is extinguished.

10. Check the analog to digital calibration and the line voltage. Depress the Enableswitch until the temperature displays show, from left to right (approximately fiveseconds):

Patient Air ControlTemperature Temperature Temperature

25.05°C (±0.2°C) 37.95°C (±0.2°C) From 09.00 to 11.00(low calibration point) (high calibration point) (Service use only)

Note: An audible alarm will sound to indicate that the actual temperatures are notdisplayed.

11. Check the patient probe. Warm the patient probe by placing it between yourfingers. Verify that the displayed patient temperature increases. If you have anASTM approved thermometer, accurate to ±0.1°C, place the thermometer and thepatient probe in a glass of warm water. Stir the water and wait several minutes untilthe thermometer reading stabilizes. Verify that the patient temperature shown onthe control panel is within 1°C of that shown on the thermometer. Replace theprobe if the difference exceeds 1°C.

12. Check the normal range of air control temperatures. Press the Enable switch toactivate the temperature switches (? and M). The enable indicator will illuminate.Press and hold the ? switch. Verify that the lowest control temperature attainable is20.0°C. If the enable indicator has gone out, press the Enable switch again. Depressthe M switch and verify that the air control temperature cannot be set above 37.0°C.

13. Check the extended range of air control temperatures. With the control temperatureset to 37.0°C, sequentially press the Enable and Override switches. The enableindicator should illuminate and the override indicator should blink. Depress the Mswitch and verify that the maximum air control temperature is now 39.0°C. Theoverride indicator will blink as long as the control temperature setting remains at, orabove, 37.0°C.

14. Check the °F/°C switch. Adjust the control temperature to 36.0°C and press the°F/°C switch. Verify that the control temperature is now displayed as 96.8°F. Pressthe switch a second time to return to a Celsius display.

4-5


4-56600-0291-000 2/24/97

15. Switch to the patient control mode of operation. Press the Enable and the PatientControl switches and verify the following sequence:

a. The enable and the patient control indicators illuminate.

b. The control temperature display flashes “36.5°C”and an operator prompt tonesounds every two seconds. Adjust the control temperature to silence the prompttone. The enable indicator will be extinguished approximately 12 seconds afterthe last time one of the temperature switches (? and M) is pressed.

Note: A patient temperature alarm will be triggered if the patient probe temperaturediffers from the control temperature by more than 1.0°C. If the probe temperature isbelow 30.0°C or above 42.0°C the heater will not switch On.

16. Check the range of patient control temperatures. Press the Enable switch to activatethe temperature switches (? and M). The enable indicator will illuminate. Press andhold the ? switch. Verify that the lowest control temperature attainable is 35.0°C. Ifthe enable indicator has gone out, press the Enable switch again. Depress the Mswitch. Verify that the patient control temperature cannot be set above 37.0°C.

Note: The maximum patient control temperature can be raised to 37.5°C byinternal adjustments specified in the service manual.

17. Check the patient temperature alarm. Press the Enable switch and adjust the patientcontrol temperature until it exceeds the patient temperature by more than 1.0°C. Analarm should sound, the patient temperature should flash and the patient tempera-ture alarm indicator should illuminate. Press the Enable switch and adjust thepatient control temperature until it is within 0.8°C of the patient temperature. Thealarm should cancel.

Note: Service personnel can configure the alarm to trigger if the difference exceeds0.5°C and to reset when the difference is less than 0.3°C.

18. Check the probe failure alarm.

a. Unplug the patient probe from the controller. Verify that an alternating two tonealarm sounds, the probe failure LED illuminates, HHHH flashes in the patienttemperature display and the heater power LEDs are extinguished. Plug theprobe back in and verify that the alarm cancels.

b. Unplug the air temperature sensor from the controller by pushing in the back ofconnector while pulling back on the “T” handles. Verify that an alternating twotone alarm sounds, 00.0°C flashes in the air temperature display, the probefailure LED illuminates, and the heater power LEDs are extinguished. Align theconnectors and plug the air temperature sensor back into the controller. Verifythat the alarm cancels.

4-6


4-66600-0291-000 2/24/97

19. Check the power failure alarm and the battery backed memory. Verify that you arestill in the patient control mode. Adjust the patient control temperature to 36.0°C.Switch to the air control mode and adjust the control temperature to 35.0°C. Unplugthe incubator. An intermittent, nonsilenceable alarm should sound and the powerfailure LED should illuminate. All other displays and indicators will be extinguished.Wait two minutes and plug the incubator back in. Verify that the alarm cancels andthe unit returns to the air control mode of operation with a control temperature of35.0°C. Switch to the patient control mode and verify a control temperature of36.0°C.

Note: A fully charged battery should supply the power failure alarm for approxi-mately 10 minutes. If the alarm is tested for the full 10 minutes the incubator mustbe run for at least two hours to recharge the battery before it is used with a patient.Total recharge time is 8 to 10 hours.

20. Check the Alarm Silence switch. Unplug the air temperature sensor and press theAlarm Silence switch. Verify that the alarm is silenced for one minute. Reconnect theair temperature sensor.

Note: The functionality of the remainder of the alarms is continually checked by themicroprocessor software during normal operation. If a fault occurs in any of this circuitry,an indicator lights and a tone is sounded.

Computer independent circuitry continuously measures and compares the incubatortemperature with a factory set level. Visual and audible alarms are activated and theheater is shut-off if the incubator temperature exceeds this pre-set level, independent ofthe software.

Additionally, a computer independent “watchdog” circuit will reset the computer, turn off theheater, and activate the alarms in the event of a microprocessor failure or software error.

Operational checks

1. Make sure that the incubator is in the air control mode.

2. Verify that the front door, the portholes and the hood are closed.

3. Set the control temperature as close to the air temperature as possible. Allow the airtemperature reading to stabilize. Verify that the air temperature remains within 0.5°Cof the control temperature for five minutes after stabilization.

5-1


5-16600-0291-000 2/24/97


WARNINGS w Complete the “Preoperative Checkout Procedure” section of this manualbefore putting the unit into operation. If the incubator fails any portion ofthe checkout procedure it must be removed from use and repaired.

w Do not leave the patient unattended when using the incubator. Check thepatient’s temperature at least every half hour. For maximum patientmonitoring over an extended period of time, select the patient controlmode of operation.

w Residual ether or similar gases exhaled by a post surgical patient may bedecomposed by the heater to produce formaldehyde.

w The optional patient probe is not isolated from earth ground. Any addi-tional equipment used with the Care Plus must comply with UL 544, CSA22.2, IEC 601, and VDE 750.

w Do not use the Care Plus or the in the presence of flammable anesthetics;an explosion hazard exists under these conditions.

w Using an incubator with a fan motor that has worn parts can produceunacceptable noise levels within the incubator.

w Direct sunlight or other radiant heat sources can cause an increase inincubator temperature to dangerous levels.

CAUTIONS w Proper temperature control depends on continuous, unobstructed air circula-tion. Do not cover air circulation openings around the bed as obstruction willresult in loss of air circulation, loss of heat, and carbon dioxide buildup.

w Do not mount or rest a radiant warmer or incandescent light on or over theincubator hood; ineffective heating and damage to the hood may result. If usingincandescent phototherapy lamps, check manufacturer’s recommended mini-mum distance to hood.

Note: Because the mattress tray is radiopaque, x-ray plates must be placed directlyunder the infant.

In this sectionBasic operating procedure ...........................................................................................5-2

Responding to alarms ..................................................................................................5-5Air circulation alarm.............................................................................................5-6Control temperature alarm ..................................................................................5-6High air temperature alarm .................................................................................5-6Patient temperature alarm...................................................................................5-7Probe failure alarm ..............................................................................................5-7Power failure alarm .............................................................................................5-8System failure alarm ...........................................................................................5-8

Additional operating procedures ..................................................................................5-8Accessing the patient ..........................................................................................5-8Raising and lowering the hood ..........................................................................5-10Trendelenburg and reverse Trendelenburg positioning ....................................5-11Administering oxygen ........................................................................................5-12Using the optional humidifier .............................................................................5-14

5-2


5-26600-0291-000 2/24/97

Basic operating procedure

This section tells you how to setup and use the incubator in the air and the patientcontrol modes.

For more detailed information on humidifier setup, oxygen administration, opening andclosing the door, or Trendelenburg or reverse Trendelenburg positioning, refer to thesection “Additional operating procedures” at the end of this chapter.

WARNINGS w Always set the brakes before placing a patient in the incubator.

w On units equipped with a humidifier the humidifier must be installed forproper incubator operation, even if you do not plan to use the humidifier.

1. Verify that the air temperature probe is connected to the controller and that thehumidifier or the hole plugs are installed. Plug the incubator into a power outlet andset the caster brakes. If desired, fill the humidifier (if present), position the mattresstilt, and set up any additional equipment.

2. Use the temperature switches (? and M) to enter the control temperature. Thenormal range for air control temperatures is 20.0 to 37.0°C.

3. To select a control temperature above 37.0°C, adjust the control temperature to37.0°C, make sure the enable indicator is still illuminated, and press the Overrideswitch. If the enable indicator has gone out, the Enable switch has to be depressedbefore the Override switch will function.

4. Select either Celsius or Fahrenheit temperature readings with the °F/°C switch.

5-3


5-36600-0291-000 2/24/97

5. For optional patient control mode operation, connect the patient probe. For aircontrol mode operation, the patient probe is optional. Connect it only if you wish todisplay patient skin temperature.

a. If you plan to use the patient control mode, use steps 2 and 3, as appropriate, topreheat the incubator to the air temperature required to maintain the desired skintemperature.

b. Place the metal side of the skin temperature probe on the patient’s skin over theliver area of the infant’s abdomen. Attach reusable probes with a heat reflectingpatch. Remove the paper protecting the hypoallergenic adhesive of the HeatReflective Patch and secure the skin temperature probe to the patient’s skin withthe adhesive side of the patch (Figure 5-1). Do not remove the heat reflecting foil.

c. If the patient is prone, place the skin temperature on the patient’s back, where itwill not be against the mattress. If the probe is between the patient and themattress, it will produce false readings.

WARNING w Intimate contact between the skin temperature probe tip and the patient’sskin must be maintained to assure accurate skin temperature measure-ment. Under or over heating may result from poor contact between the skintemperature probe and the patient. Check this attachment regularly toassure the patient’s safety.

CAUTION w Avoid placing excessive strain on the skin temperature probe lead. Alwaysremove the probe from the patient by grasping and removing the heat reflectivepatch first, then remove the probe from the patient or the patch. Always removethe probe by grasping the plug at the panel. Do not pull on the probe lead.

d. Connect the skin temperature probe to the unit.

Note: The disposable probe comes with the heat reflecting pad attached.

Figure 5-1Attaching the patient probe to the infant

Heat Reflecting Patchwith Reflective SideFacing Up

White Paper Protector

Patient Probe (Place themetal side in contact withthe infants skin)

CI.0

2.00

6

5-4


5-46600-0291-000 2/24/97

e. Route the wire through the left tubing access cover and plug the probe connectorinto the side of the controller. Refer to Figure 5-2.

If the ambient temperature is less than 22.0°C (71.6°F), LLLL appears in place ofthe patient temperature until you attach the probe to the infant.

WARNINGS w Use only the Reusable Ohmeda skin temperature probe (Stock No. 0208-0697-700) and Heat Reflective Patches (Stock No. 0203-1980-300, 50/pkg) or the disposable probe (Stock No. 6600-0208-700,10/pkg; Stock No.6600-0196-700, 50/pkg) to monitor the patient’s skin temperature. Use ofother manufacturer’s probes may affect the accuracy of equipment opera-tion and the electrical safety of the patient.

w In incubators equipped with radiant or phototherapy lamps, the skintemperature probe should be located on the patient’s skin in an area whichis directly in the path of the radiant heat. It should not be attached to anarea which is shielded from the radiant heat or between the patient and themattress. Large temperature gradients and very long servo response timeswill result from improper probe placement.

w Rectal temperatures must never be used to control a patient’s temperature.

Figure 5-2Connecting the patient probe to the Care Plus 2000 incubator

Air TemperatureSensor

Patient Probe

Air TemperatureSensor Connector

Patient ProbeConnector

CI.2

3.00

7

5-5


5-56600-0291-000 2/24/97

6. If you plan to use the patient control mode, verify that the incubator has warmed upto the Desired Environmental Temperature. Then press the Enable switch followedby the Patient Control switch:

a. The patient control and the enable indicators illuminate.

b. The control temperature display flashes “36.5°C” and an operator prompt tonesounds every two seconds. The alarm will continue to sound until you enter acontrol temperature. The heater will not operate unless a control temperature isentered.

Note: When patient control mode operation first begins, a patient temperaturealarm may trigger. Silence the alarm and attend the patient. This alarm triggersnormally if the patient probe temperature differs from the control temperature bymore than 1.0°C. If the probe temperature is below 30.0°C or above 42.0°C, theheater will not switch On.

Responding to alarms

WARNINGS w Excessive EMI levels in the hospital environment can trigger the systemfailure alarm. Note the error code and switch off the unit. Wait ten sec-onds and switch the unit back on. If the system failure alarm recurs,remove the incubator from use.

w If an alarm is silenced, closely monitor the patient.

Note: Refer to the troubleshooting section in Chapter 7 for problems that do not involvean alarm indicator.

Many things can trigger alarms. For example: a patient’s condition may change; apatient probe may detach; or a change in the control temperature may increase thedifference between the control temperature and the monitored temperature (air orpatient) to an unacceptable level.

If an alarm triggers:

• Evaluate the patient

Attend the infant.

• Identify the alarm

Check the indicators to identify the active alarm. When two or more alarms areactive, their respective indicators illuminate. If an indicator illuminates, look thealarm up alphabetically in this section. If two or more alarms have been triggered,the audio signal sounds for the highest priority alarm.

• Silencing the alarm

If desired, silence the alarm. At the end of the silence period the audio alarmreactivates unless the alarm condition has been resolved. The length of the alarmsilence period depends on the alarm. Power failure and system failure alarmscannot be silenced.

Another alarm prematurely ends the alarm silence period.

• 30 second operator Prompt tone

All silenceable alarms are preceded by a 30 second operator prompt tone,in order to minimize disturbance to the infant.

5-6


5-66600-0291-000 2/24/97

Air circulation alarm

Air is not circulating through the incubator. The most common cause is a missing fan ora fan that is not rotating.

If the alarm continues, stop using the incubator and call for service.


The air temperature is 1.5°C above or 3.0°C below the air control temperature (aircontrol mode alarm).

The control temperature alarm is automatically silenced for 30 minutes after you switchon the unit and for 15 minutes after you change the control temperature or switch to theair control mode.

1. Evaluate the patient:

• Opening the incubator door causes some heat loss.

• If the incubator starts out cold, or you make a large change in the controltemperature, the incubator may take longer than the automatic alarm silenceperiod to warm up.

2. If the alarm continues, stop using the incubator and call for service.

High air temperature alarm

The air temperature exceeds fixed limits:

Control High TemperatureMode Temperature Alarm Limit

Patient Control Entire Range 40.0°C (104.0°F)

Air Control 20.0 to 37.0°C 38.0°C (100.4°F)(68.0 to 98.6°F)

37.0 to 39.0°C 40.0°C (104.0°F)(98.6 to 102.2°F)


• Have you changed the air control temperature? In the air control mode, de-creasing the control temperature below 37.0°C decreases the alarm limit from40°C to 38°C. Making this change while the incubator temperature exceeds38°C triggers the alarm.

• Have you changed operating modes? The same thing can happen if you switchfrom the patient control mode (alarm limit 40°C) to the normal air control mode(alarm limit 38°C).

2. Press the alarm silence button and monitor the patient. This alarm does not selfcancel if the temperature falls below the alarm limit. You must press alarm silenceto reset it.

3. If the alarm recurs, stop using the incubator and call for service.

5-7


5-76600-0291-000 2/24/97

Patient temperature alarm (Care Plus 2000 only)

The patient temperature differs from the patient control temperature by more than1.0°C or the patient temperature is outside the 30.0 to 42.0°C range (patient controlmode alarm).

Note: Service personnel can adjust this alarm to trigger at a temperature difference of0.5°C


• Opening the incubator door causes some heat loss.

• Control temperature changes can temporarily increase the difference betweenthe patient and the control temperatures.

2. Make sure that the patient probe is properly connected to the patient: the metalside of the probe must make good contact with the infant’s skin. With a reusableprobe, you must also attach a separate reflecting patch. Make sure the metal sideof the patch faces up.

3. If HHHH or LLLL appears in the patient temperature display while the patient probeis properly connected to the patient, replace the patient probe.


Probe failure alarm (Care Plus 2000 models only)

One of the temperature sensors is disconnected or contains an open or shorted circuit.

In the air control mode:

1. If 00.0 appears in the air temperature display, plug the air temperature sensor intothe controller.


In the patient control mode:

1. If 00.0 appears in the air temperature display, plug the air temperature sensor intothe controller.

2. Make sure that the patient probe is plugged into the controller.

3. If HHHH or LLLL appears in the patient temperature display and the patient probeis plugged into the controller, replace the patient probe.


5-8


5-86600-0291-000 2/24/97

Power failure alarm

The incubator is switched on, but it is not getting any power.

1. Make sure that one end of the power cord is plugged into the controller and that theother end of the cord is plugged into a power outlet.

2. Plug another device into the outlet to verify that the power outlet has power.

3. Replace the power cord.


System failure alarm

Excessive EMI levels in the hospital environment can trigger the system failure alarm.Note the error code and switch off the unit. Wait ten seconds and switch the unit backon. If the system failure alarm recurs, remove the incubator from use. Then, call forservice.

Additional operating procedures

This section provides more information on opening the hood, using the humidifier, andadministering oxygen.

Accessing the patient

Opening the front door:

Opening the front door gives you total access to the patient without affecting the airflow. To lower the door, rotate the door latches down (Figure 5-3).

WARNINGS w Do not leave the infant unattended while the front door or the portholesare open.

w When opening or closing the front door or the portholes, make sure thatthe infant, any clothing, the monitoring leads, etc., are completely withinthe confines of the bed.

Opening the porthole:

To open a porthole, press in on the latch until the porthole opens. To close a porthole,push the cover shut until the latch clicks into position.

5-9


5-96600-0291-000 2/24/97

Figure 5-3Opening the front door

Pulling out the mattress tray:

Pulling out the mattress tray facilitates procedures that require total access to theinfant. This can only be done when both tilt mechanisms are at their lowestposition. Lower both tilt mechanisms, lift the tray slightly at the edge of the doorand gently pull the tray out (Figure 5-4).

WARNINGS w While sliding the mattress tray out, make sure the square tabs on theback corners of the tray are engaged in the guide tracks at both ends ofthe platform cover.

w When sliding out the mattress tray, carefully guide any tubes or monitor-ing leads through the tubing access covers. If there is insufficient slackor the tubing gets stuck, the attached devices could accidentally discon-nect or the patient could be harmed.

CAUTION w Do not operate the tilt mechanisms when the mattress tray is pulled out. The tiltmechanism may jam as a result.

Porthole Latch

Door Latch

CI.2

3.00

4

MAX 1000 mL

MIN

5-10


5-106600-0291-000 2/24/97

Oxygen Inlet


m





?

?





Oxygen Inlet


m





?

?





Figure 5-5Raising the hood

Front Door(Open Position)

Figure 5-4Pulling out the mattress tray

Raising and lowering the hood

WARNING w Do not raise the hood when a patient occupies the incubator. Raise thehood only for hood disassembly and cleaning.

The hood can be raised to facilitate cleaning. The hood tilt latch on the right rear cornerof the incubator holds the hood open. To tilt the hood, push on the tab on the hoodlatch and rotate the hood back until it locks in position. See Figure 5-5. To return thehood to its normal position, support the hood and release the hood tilt latch by pushingback the release tab on the latch. Then slowly lower the hood.

MattressTray

CI.2

3.00

8

CI.2

3.00

9

Hood Latch

Press Here

5-11


5-116600-0291-000 2/24/97

MAX 1000 mL

MIN

Trendelenburg and reverse Trendelenburg positioning-tilt handlemodels

CAUTION w Do not use the tilt handles to maneuver the incubator.

Tilt handles on the front of the unit, allow ten degree Trendelenburg (feet up) or reverseTrendelenburg (head up) positioning.

Tilting the mattress:

1. Grasp the tilt handle on the side of the mattress that you wish to raise(Figure 5-6).

2. Rotate the tilt handle down until it locks in position to raise the correspondingside of the mattress.

WARNING w Verify that the mattress is locked in position before releasing thetilt handle.

Returning to the horizontal position:

To return the mattress to the horizontal position, rotate the handle up to lowerthe mattress.

Figure 5-6Tilting the mattress

Air Temp. Sensor

Tilt Handle

Portholes

Front Door Latch

CI.2

3.00

4

5-12


5-126600-0291-000 2/24/97

Administering oxygen

WARNINGS w Additional oxygen should only be administered under the direction ofqualified medical personnel.

w The use of head boxes, hoods and oxygen inlets can increase the noiselevel inside the incubator.

w Remove all sources of ignition including smoking materials, and sourcesof electrical discharge from the area when oxygen is in use. In the pres-ence of high oxygen concentrations, even relatively nonflammable itemscan ignite and burn rapidly. Do not place auxiliary equipment producingsparks inside the incubator. Even small quantities of highly flammableitems (such as organic cleaning solvents) may explode.

w Ensure the controller is seated and latched prior to administering oxygen.

You can increase the internal incubator oxygen concentration by connecting an oxygensource to the inlet on the right hand side of the incubator. Either pipeline or regulatedcylinder supplies may be used.

5-13


5-136600-0291-000 2/24/97

Oxygen Inlet


m





?

?





Figure 5-7Connecting oxygen supplies

1. Connect the output of the oxygen flow meter to the inlet fitting on the right handrear corner of the incubator (Figure 5-7).

WARNING w Always use a back pressure compensated flow meter to deliver oxygen tothe incubator. Other flow meters may not compensate for the back pres-sure created by the oxygen inlet and could deliver incorrect flow rates.

2. Set up an oxygen analyzer to monitor the hood oxygen concentration. Position thesampling tube or sensor near the center of the infant compartment. Route the tubeor sensor cable out the hood through one of the tubing access covers.

WARNINGS w Monitor the oxygen concentration at a position near the infant’s head.The concentration vs flow rate chart on the side of the incubator givesonly approximate concentrations to aid in setting the initial flow rate. Itmust not be used in place of an oxygen analyzer.

w Use an oxygen monitor whenever oxygen is being administered. Concen-tration of inspired oxygen does not predictably determine the partialpressure of oxygen in the blood; blood gas measurements are extremelyimportant for the regulation of inspired oxygen concentrations when anoxygen enriched environment is necessary. Oxygen concentrationsabove 40% can increase the risk of retrolental fibroplasia (retinopathy ofprematurity). Even concentrations of 40% or less oxygen (formerly con-sidered safe) could be dangerous to some infants. (See current edition of“Standards and Recommendations on Hospital Care of Newborn Infants”prepared by the Committee on Fetuses and Newborns of the AmericanAcademy of Pediatrics.)

Oxygen Inlet

CI.2

3.00

6

5-14


5-146600-0291-000 2/24/97

3. Switch On the incubator. Unless the incubator is operational, there will be no airflow to ensure adequate mixing inside the hood.

4. Set up the initial flow rate using the oxygen concentration table next to the oxygeninlet. The chart will give you a general idea what flow rate will be required tomaintain the desired concentration. The actual concentration will vary with thecondition of the incubator air inlet filter, hood seals, door seals and the number ofopen portholes, as well as the infant’s condition.

5. Wait 30 minutes and then check the oxygen concentration inside the unit, withoutopening the hood. Adjust the flow rate if required. Allow 30 minutes betweenadjustments for the new concentration to stabilize.

Using the optional humidifier

WARNING w The humidifier must be installed for proper incubator operation, even ifyou do not plan to use the humidifier.

The Care Plus offers three levels of humidification: none, low, and high. If you do notwant humidification, do not put water in the humidifier.

Even at the high setting, the humidifier reservoir holds more than enough water to lastfor 24 hours.

1. Gently slide the humidifier out of the base. You will feel an initial resistance, butapply a steady pull to avoid spilling its contents (Figure 5-8).

2. Set the humidifier down on a level surface and add water to the fill level indicatedon the label (1000 ml maximum).

Note: Do not fill the humidifier past the fill level. Filling past the fill level actuallyDECREASES humidification.

3. Slide the humidifier back into the base.

4. Adjust the slide on the side of the humidifier to set the humidification level:

• For high humidification move the slide completely back.

• For low humidification move the slide completely forward.

Drain the humidifier when the unit is not in use. Disinfect the humidifier weekly or aftereach patient. Refer to the section “Cleaning and disinfecting individual components” inchapter 6 for disinfection instructions.

5-15


5-156600-0291-000 2/24/97

CI.2

3.01

0

Humidifier

Lid

Slide

Figure 5-8Using the humidifier

5-16


5-166600-0291-000 2/24/97

Notes

6-1


6-16600-0291-000 2/24/97


WARNINGS w The heater is hot enough to cause skin burns. Unplug the incubator andallow the heater to cool before disassembly or cleaning.

w Always disconnect the power before performing service or maintenanceprocedures detailed in this manual. Apply power only if you are specifi-cally instructed to do so as part of the procedure.

w Thoroughly air dry the incubator after cleaning it with flammable agents.Small amounts of flammable agents, such as ether, alcohol or similarcleaning solvents left in the incubator can cause a fire.

w Never oil or grease oxygen equipment unless a lubricant that is made andapproved for this type of service is used. Oils and grease oxidize readily,and in the presence of oxygen, will burn violently.

In this sectionCleaning schedule .......................................................................................................6-1

Disassembling the incubator for a complete cleaning .................................................6-2

Cleaning and disinfecting individual components ........................................................6-6Humidifier ............................................................................................................6-6Patient Probe (Reusable) ....................................................................................6-7Controller assembly ............................................................................................6-8Porthole ...............................................................................................................6-9Compartment Temperature Probe ......................................................................6-9Other Clear Plastic Parts .....................................................................................6-9Lower unit (mattress, mattress tray, base platform cover, etc.) ..........................6-9Oxygen inlet ........................................................................................................6-9Cabinet ................................................................................................................6-9

Cleaning schedule

This schedule lists the minimum frequencies. Always follow hospital and local regula-tions for required frequencies.

Weekly or after each patient

Disinfect the humidifier if it was used.

Perform a complete cleaning and if necessary disinfect the entire incubator.

Check the air filter; replace the air filter after use with an infectious patient.

Check the front door and the porthole latches and hinges to make sure that they will notopen accidently.

Quarterly

Replace the air filter.

When the incubator is not in use, use standard analytical methods to make sure thatthe infant compartment and any direct contact components, such as the humidifier andthe oxygen inlet, meet hospital cleanliness standards.

6-2


6-26600-0291-000 2/24/97

Disassembling the incubator for a complete cleaning

If the incubator has been exposed to body fluids, check your hospital’s infection controlprocedures. You may need to wear protective clothing and eye wear or use specialsterilization agents and cleaning procedures.

WARNING w Disconnect the power cord before disassembling or reassembling the lowerunit.

CAUTIONS w Electronic devices in the microprocessor controller are susceptible to damage fromdischarges of static electricity. These devices are adequately protected, but can bedamaged if the unit is disassembled beyond that recommended for cleaning andmaintenance.

w Do not remove the air temperature sensor mounted to the rear hood wall; theair temperature sensor must remain in the correct position for proper incubatoroperation.

1. Turn the power switch Off and unplug the unit from the power outlet.

2. If the incubator was previously on, allow it to cool for at least 30 minutes.

3. Remove the filter by unscrewing the two filter mounting knobs on either side of thevented rear panel. Pull off the panel and remove the filter.

WARNING w The air filter cannot be cleaned and must be replaced every three months,when visibly dirty or after use with an infectious patient. If the air filter isexposed to liquids or disinfectants, replace it with a new filter.

4. Unplug the power cord from the right side of the controller.

5. Unplug the air temperature sensor and the patient probe (if present) from the controller.

6. Pull up on both controller latches and slide the controller forward, out of the lower unit.Be careful not to bump the heater or the fan. They may grate against each other or thebase platform if they are knocked out of alignment.

7. Open the incubator door and tilt the hood back to its locked position. Remove the innerwall by pressing up on the center of the wall until it flexes enough to free the two insideinner wall fasteners from their holes, then slide the wall toward the incubator so that thetwo outside inner wall fasteners slide along their keyhole slots and out the large holesat the slot’s end. See Figure 6-1. If the optional rear inner wall is installed, it may beremoved in a way similar to the front inner wall.

6-3


6-36600-0291-000 2/24/97

Figure 6-1Removing the inner wall

8. Lift out the mattress and the mattress tray (Figure 6-3).

9. Remove the tilt assemblies. See figure 6-2

1) Lift the tilt handle out of its slot.

2) Pull the tilt rod just a little up out its hole

3) Turn the handle down 90°

4) Tilt the assembly all the way back while turning it in another 90°

5) Grasp the rod where it enters the hole and pull it straight out.

10. Lift out the base platform cover.

11. Remove the optional humidifier. Slide the humidifier out from under the base.Remove the seals on the portholes.

12. Remove the iris cuff by streching its elastic band off the frame and tighteningring. Snap the tightening ring off the frame. Remove the gasket from the frame.Push the frame out of the hood.

Reverse the steps for assembly. Replace the porthole seals. To install new armcuffs, slip the larger elastic ring over the housing of the porthole. To reattach theinner wall, insert two outside inner wall fasteners in their keyhole slots and slide thewall until the two inside inner fasteners pop into their holes

CI.2

3.03

8

>37°C

°F / °C

100%75%50%

25%

6-4


6-46600-0291-000 2/24/97

CI.2

3.03

3, 0

34, 0

35, 0

36, 0

37

Figure 6-2Removing the tilt handle

>37°C

°F / °C

100%75%50%

25%

1

>37°C

°F / °C

100%75%50%

25%

2.5 cm

>37°C

°F / °C

100%75%50%

25%

3

>37°C

°F / °C

100%75%50%

25%

4

>37°C

°F / °C

100%75%50%

25%

5

6-5


6-56600-0291-000 2/24/97

>37°C

°F / °C

100%75%50%

25%

BasePlatformCover

Filter

Slide

Lid

MattressTray

Mattress

Controller

FilterCover

Base Platform

TiltAssemblies

CI.2

3.01

2

Humidifier(optional)

Figure 6-3Disassembling the lower unit

6-6


6-66600-0291-000 2/24/97

Cleaning and disinfecting individual components

CAUTIONS w Clean the incubator at least once a week or after each patient.

w Do not clean the incubator with organic solvents, scouring compounds, strongacids, or strong bases. These compounds may damage the incubator.

Divide the components according to cleaning methods. Methods other then thosedetailed in this section may damage the incubator.

Humidifier

CAUTION w Do not use peroxide or alcohol solutions to clean the humidifier tray.

Disassemble the humidifier. Clean the interior with a mild detergent-disinfectantsolution. Rinse and thoroughly dry the parts before reassembly. The humidifiermay be pressure steam sterilized up to a maximum of 15 minutes at 240° F (116° C)and 15 psig (103 kPa).

To avoide part distortion:

• Do not exceed 15 minute maximum

• Do not place parts on top of one another

• Place all items on a flat surface

• Rinse and dry all parts before sterilizing

6-7


6-76600-0291-000 2/24/97

Patient Probe

CAUTIONS w Avoid placing excessive strain on the probe lead. When cleaning, be carefulnot to pull on or bend the lead at the probe tip. Always remove the probe fromthe incubator by grasping the plug at the panel. Do not pull on the probe lead.

w Do not apply cold sterilization or cleaning solutions to the probe connector.

Note: The reusable, Ohio patient temperature probe, Stock No. 0208-0697-700, is anexpendable part as specified in the warranty.

1. Determine if the patient probe is disposable or reusable:

• Reusable probes have black connectors and use a separate,heat reflecting patch.

• Disposable probes have a white connectors and come with asmaller heat reflecting patch already attached.

Note: Disposable skin temperature probes cannot be cleaned.

2. Clean the skin temperature probe by gently wiping with a soft damp clothcontaining a disinfecting agent safe for use on the probe materials.

The following lists some cleaning solutions that may be used safely:

Generic Formulation Maximum Concentration Level

Sodium Hypochlorite 0.5% Aqueous Solution

Glutaraldehyde 2%

Hydrogen Peroxide 6%

Iodophor Solution 0.27%

CAUTIONS w Use of cleaning/disinfecting solutions containing chemicals not listed above(i.e. alcohol, acetone, etc.), or chemicals in greater concentrations than thoselisted above, may damage the probe.

w Do not autoclave or gas sterilize the skin temperature probe. Do not immersethe probe in liquid cleaner. Avoid placing excessive strain on the probe lead.Always remove the probe by grasping the plug at the panel. Do not pull on theprobe lead. These precautions will avoid damage to the probe.

6-8


6-86600-0291-000 2/24/97

Controller assembly

CAUTION w If you fill the cleaning tank past the fill mark, cleaning solution can leak into thecontroller electronics.

Controller parts that do not contact the infant

Wipe the front panel, the top cover, the side panels, and the rear panel with a dampcloth and a mild detergent solution. Do not apply cleaning solutions onto or near theprobe connectors.

Heater and fan assembly

Remove any lint build up from the rear of the controller. Wipe the fan, the motor shaftand the controller surfaces to which these items are mounted, with a cloth dampened inthe cleaning solution. Use a minimum amount of solution. Do not spray on the cleaningsolution or permit it to contact any electrical parts.

Alternatively, lower the back of the controller into the cleaning tank accessory. Refer toFigure 6-5.

CAUTIONS w Never substitute any other container for the controller cleaning tank (Stock No.6600-0202-500).

w Do not clean the fan sensor with hydrogen peroxide.

Figure 6-3Cleaning the controller

CAUTIONS w Do not autoclave or gas sterilize any of the plastic parts.

w Do not use strong acids or strong bases on plastic parts.

Controller

Bulkhead

Cleaning Tank

CI.0

2.01

8

6-9


6-96600-0291-000 2/24/97

PortholeThe following cleaning agents are acceptable for cleaning and disinfecting the porthole:

Isopropyl Alcohol, 70% concentration

Hydrogen Peroxide, 6% concentration (such as Endo-Spor 100% strength)

Cavicide Spray, 100% concentration as sprayed from the can (active ingredients -Diisobutylphenoxyethyl dimethyl benzyl ammonium chloride .25%, Isopropanol14.85%).

Idophor Solution, 0.27% concentration (active ingredients - Polythoxy polypropoxypolyethoxy ethanoliodine complex 9.10%, nonyl phenoxypoly [ethyleneoxy] ethanoliodine8.74%, provides 1.6% minimum Titratable iodine, such as Wescodyne- mixed 2 fl. oz. to 1gal. H2O) Note: this solution will stain porthole seals and bumpers yellow.

The following cleaning agents will damage the material being cleaned and are notrecommended:

Sodium Hypochlorite, 0.5% (bleach)

Quaternary Ammonium, 0.2% concentration (such as Virex)

Glutaraldehyde, 2% concentration (such as Cidex Plus)

Compartment Temperature Probe

Wipe the temperature probe with a cloth dampended with a mild detergent-disinfectantsolution, such as Cavicide™. Be sure to allow the probe to thoroughly dry beforeputting the incubator back into operation.

Other Clear Plastic Parts

CAUTIONS w To minimize the generation of static electricity, do not polish the incubator hoodwith a dry cloth.

w Do not autoclave or gas sterilize the mattress or any of the plastic parts.

w Do not use strong acids or strong bases on plastic parts.

Clean the hood, the inner wall, and other clear plastic parts of the incubator with adisinfectant-detergent. Make sure that the inner walls have been removed so that allincubator surfaces are exposed.

Apply the cleaning solution with a clean cloth or sponge. Dry the plastic parts with aclean damp soft cloth to avoid scratches.

Note: Do not allow excess cleaning solution to seep in between plastic parts (forexample: between the hood and porthole, or between the hood and the inner wallretainers) where it can not be easily wiped dry with a cloth.

Lower unit (mattress, mattress tray, base platform cover, etc.)

Clean the base platform cover, the mattress and the mattress tray with a mild deter-gent-disinfectant solution. The tilt mechanism parts in the patient compartment can becleaned by immersing them in soap and water or a mild detergent disinfectant solution.Clean the exterior tilt controls by wiping down the exposed surfaces with a clothdampened with a mild detergent-disinfectant solution. Do not immerse exterior tiltmechanism. Rinse and thoroughly dry the parts before reassembly.

Oxygen inlet

Clean the oxygen inlet with a mild cleaning solution or disinfectant.

Cabinet

Clean the cabinet with a mild cleaning solution. Apply the cleaning solution with a cleancloth or sponge. Dry the cabinet with a clean, soft cloth.

6-10


6-106600-0291-000 2/24/97

Notes

7-1


7-16600-0291-000 2/24/97


In this sectionRepair Policy ................................................................................................................7-1

Maintenance schedule .................................................................................................7-1Operator maintenance ........................................................................................7-1Service maintenance...........................................................................................7-2

Troubleshooting incubator problems ...........................................................................7-2

Repair PolicyWarranty repair and service must be performed by an Ohmeda Service Representativeor at the Ohmeda Service and Distribution Center. To contact an Ohmeda ServiceRepresentative, call the nearest Ohmeda Regional Service Office listed on the backcover.

Do not use malfunctioning equipment. Make all necessary repairs or have the equip-ment repaired by an Ohmeda Service Representative. Parts listed in the servicemanual, for this product, may be repaired or replaced by a competent, trained personwho has experience in repairing devices of this nature. After repair, test the equipmentto ascertain that it complies with the published specifications.

CAUTIONS w Only competent individuals trained in the repair of this equipment shouldattempt to service it as detailed in the Service Manual (Stock Number 6600-0292-000).

w Detailed information for more extensive repairs is included in the servicemanual solely for the convenience of users having proper knowledge, tools andtest equipment, and for service representatives trained by Ohmeda.

Maintenance scheduleThe unit should be maintained in accordance with the procedures detailed in theService Manual. Quarterly and two year maintenance must be performed by a techni-cally competent individual as described in the Repair Policy.

Operator maintenance


Weekly or After Each Patient

Disinfect the humidifier if used.

Clean the incubator and check the air filter. Disinfect the incubator if required or afteruse with infectious patients.

Quarterly

Replace the air filter. When you replace the filter, mark the date on the label suppliedwith the replacement filter and affix it to the filter cover panel.

Note: This is the minimum replacement frequency. The filter must also be replacedwhenever it appears dirty, or has been used with an infectious patient.

7-2


7-26600-0291-000 2/24/97

Service maintenance


Quarterly

Perform the electrical safety and checkout procedure from the Service Manual. Ifpossible verify an acceptable sound level within the infant compartment. Every otherquarterly inspection, check the calibration as detailed in the Service Manual.

Every Two Years

Replace the battery. Inspect all seals and gaskets. Replace shock mounts and bushings.

Note: The battery is used to sound the power failure alarm and to power memorycircuits during a power failure.

Troubleshooting incubator problems

WARNINGS w Excessive EMI levels in the hospital environment can trigger the systemfailure alarm. Note the error code and switch off the unit. Wait ten sec-onds and switch the unit back on. If the system failure alarm recurs,remove the incubator from use.

w If an alarm is silenced, closely monitor the patient.

Symptom Possible cause(s) Recommended action(s)

Controller does not Power is off or the power Connect the power cord.energize cord is disconnected

Switch the power on.

Unit will not heat in Probe temperature Warm probe above 30°CPatient Control Mode* below 30°C

All LEDs go out while Open circuit breaker For controllers with serialthe unit is in use numbers beginning with

HBJ and HCE, discontinueuse and call for service.

For all other controllers,switch the power Off andOn to reset the unit. Afterthe second occurrence,discontinue use and callfor service.

Mode control, Switches are not enabled Press the Enable switch totemperature switches (enable indicator is out) activate the switches.(? and M), or Overrideswitches do not respond Controller failure Discontinue use and call

for service.

* On units with patient control mode

7-3


7-36600-0291-000 2/24/97

Symptom Possible cause(s) Recommended action(s)

HHHH or LLLL appears Patient probe jack Plug the patient probein the patient temperature not properly seated completely into thedisplay in the air control controller.mode

Patient probe failure Replace the probe andcheck the patient.

Alarm cannot be silenced Microprocessor failure Discontinue use and calland all indicators are for service.extinguished

System failure alarm Electrical failure Note the error code andswitch off the unit. Wait tenseconds and switch theunit back on. If the systemfailure alarm recurs,discontinue use and callfor service.

Probe failure alarm* Air probe disconnected in Reconnect the aireither mode. Air temp. temperature sensordisplay reads 00.0

Patient probe disconnected Reconnect the patientin patient control mode. probe.Patient temp. display readsHHHH

Patient probe malfunction Replace the patient probe.in patient control mode.Patient temp. display readsHHHH

Control unit failure Discontinue use and callfor service.

Air circulation alarm Blower motor failure Discontinue use and callfor service.

Missing fan Reinstall fan

Power failure alarm The power cord is not Plug the power cord in.plugged into a live poweroutlet

The power cord is notplugged into the controller

One or more indicators fail Electrical failure Discontinue use and callfor service.

Improper or no Disconnected RS-232 Reconnect RS-232 cable.Serial String cable

Unable to achieve On units with humidifier Check humidifierhumidification level tray not properly installed

Unable to achieve On units without humidifier Check to see if plugsO2 level plug in base missing are installed

7-4


7-46600-0291-000 2/24/97

Notes

8/Illustrated Parts

8-1 8-16600-0291-000 2/24/97

>37°C

°F / °C

100%75%50%

25%

8/Illustrated Parts

Item Stock Number

1. Mattress with cover ........................................................................... 6600-0152-5002. Filter w/replacement date sticker ....................................................... 6600-0043-8003. Humidifier, passive (complete, includes 4-7)* ................................... 6600-0218-8004. Humidifier fill tray ............................................................................... 6600-0768-5005. Humidifier slide .................................................................................. 6600-0435-5006. Humidifier lid ...................................................................................... 6600-0434-5007. Humidifier seal 2/pkg ......................................................................... 6600-0220-800

Base platform and cover assembly

2

1

6

7

5

4 CI.2

3.01

2

* For Servo-Controlled Humidifier see manual 6600-0223-000

3

8/Illustrated Parts

8-2 8-26600-0291-000 2/24/97

Notes

A-1

Appendix

A-16600-0291-000 2/24/97

AppendixIn this sectionCare Plus specifications ............................................................................................. A-1

Electrical specifications ...................................................................................... A-1Performance specifications ................................................................................ A-2Safety specifications .......................................................................................... A-4Environmental specifications .............................................................................. A-4Electromagnetic Compatibility (EMC) Specifications ......................................... A-4Mechanical specifications .................................................................................. A-5

Glossary ...................................................................................................................... A-9

Care Plus specifications

Electrical specifications

Power requirements

Designed to IEC 601-1 and IEC 601-2-19 specifications

120 Vac 50/60 Hz Models (115 Vac ± 10%, 5.7 Amps)220 Vac 60 Hz Models (220 Vac ± 10%, 3.0 Amps)220-230 Vac 50 Hz Models (220 Vac - 10%, 230 Vac + 10%, 3.0 Amps)240 Vac 50/60 Hz Models (240 Vac ± 10%, 2.7 Amps)

Nominal power consumption

450 watts at maximum heater output

Line voltage compensation

Heat output compensated for line voltage fluctuations up to 10% of nominal line voltage.

Rated Current: 7 AmpsTrip Point: 9.8 Amps MinimumType: Manual ResettingModel: ETA 41-06-P10 7 Amps

A-2

Appendix

A-26600-0291-000 2/24/97

Performance specifications

Patient temperature measurement

Range Displayed: +22 to 42°C (71.6 to 107.6°F)Accuracy*: ± 0.3°C (± 0.5°F) within a range of 30-42°CResolution: ± 0.1°C or °F

Probe Model Numbers: LA003, LA005 (disposable)Probe Interchangeability: ± 0.1°C (± 0.2°F)

Air temperature measurement

Range Displayed: 5 to 50°C (41.0 to 122.0°F)Resolution: ± 0.1°C or °FAccuracy*: Varies over temperature range

Temperature Range Accuracy

5 to 22°C (41-71.6°F) ± 0.5°C (0.9°F)22.0 to 42.0°C (71.6-107.6°F) ± 0.3°C (0.5°F)42.0 to 50.0°C (107.6-122.0°F) ± 0.5°C (0.9°F)

Control temperature ranges

Patient Control Mode: 35.0 to 37.0°C (95.0 to 98.6°F), up to 37.5°C (99.5°F) withinternal adjustment

Air Control Mode: 20.0 to 37.0°C (68.0 to 98.6°F), up to 39.0°C (102.2°F) with controlpanel Override switch.

Thermal performance

Temperature Rise Time*: Less than or equal to 20 minTemperature Variability*: 0.2°C (0.4°F)Temperature Overshoot*: Less than or equal to 0.8°C (1.4°F)

Note: * These terms are defined in the Glossary.

Alarms

Indicator and Nonsilenceable Audio AlarmPower Failure

Indicator and Silenceable Single Tone AlarmDifference between patient temperature and patient control temperature exceeds 1.0°Cpatient control mode (can be adjusted to 0.5°C).

Air temperature is 1.5°C above or 3.0°C below air control temperature (air controlmode; Disabled for 15 minutes after control temperature change and for 30 minutes onpower up).

Indicator, Silenceable Two Tone Alarm and Heater ShutdownAir temperature sensor disconnected (both modes)Patient probe disconnected or malfunctioning (patient control mode)Air circulation system failurePatient temperature > 42.0°C or < 30.0°CAir temperature > 38.0°C (air control mode w/o Override)Air temperature > 40.0°C (patient control mode or air control mode with Override)

A-3

Appendix

A-36600-0291-000 2/24/97

Indicator, Nonsilenceable Two Tone Alarm, Heater Shutdown and Possible Error CodeSystem failure

Operator prompt tone

Intermittent audio tone sounds when the unit is first switched On and when the patientcontrol mode is first selected. Tone is silenced when control temperature is entered.The heater will not operate until a control temperature has been entered. On controllerswith serial numbers beginning with HBJ, this 30 second tone also precedes allsilenceable alarms.

Proportional heat control

Features zero voltage switching to minimize radiated and conducted EMI. Heaterpower compensated for line voltage fluctuations of up to 10% of the nominal voltage.

Air velocity over mattress

Less than 35 cm/sec.

Noise level within unit

Less than 60 Decibels, A weighted

Incubator Temperature (°C)

%RH(Incubator)

100

75

50

60 4852

4024.6

30

0

35 39

High Setting

Low Setting

Empty Reservoir

35

Note: RH values shown above may vary by ±10%

Humidifier specifications

Specification test conditions used to collect data:Room temperature: 25°CRoom humidity: 50% RHReadings taken two hours after reaching temperature equilibrium without an infant inthe incubator.

CI.0

2.06

7

A-4

Appendix

A-46600-0291-000 2/24/97

Oxygen concentration within unit

25 to 45% with 5 l/min. oxygen input35 to 65% with 10 l/min. oxygen input45 to 75% with 15 l/min. oxygen input

Carbon dioxide concentration within unit

Less than 0.5% when a 4% carbon dioxide, 96% air mixture is fed into the infantcompartment at rate of 0.75 l/min (simulated infant occupancy).

Safety specifications

Isolation voltage

2500 Vrms 60 Hz from the patient probe to the ac phase and neutral lines for one minute.

IEC 601-1 Class I Equipment

m IEC 601-1 Type B Isolation

Mode of Operation: Designed for continuous operation.Protection against ingress of water: Not protected.

WARNING w The patient probe is not isolated from earth ground. Any additional equip-ment used with the Care Plus must comply with IEC 601-1

Leakage current

Power supply: 120V 50/60 HzLeakage current: less than 300 µA

Power supply: 220/240 V 50/60 HzLeakage current: less than 500 µA

Self test

The microprocessor performs self test and software verification functions when thepower is first switched On.

Environmental specifications

Operating Temperature Range: 20 to 30°C (68 to 86°F)Storage Temperature Range: -25 to 60°C (-13 to 140°F)Operating and Storage Pressure Range: 500 to 1060 hPaOperating and Storage Relative Humidity Range: 0 to 95%

Electromagnetic Compatibility (EMC) SpecificationsAll models meet the requirements as specified in IEC 601-1-2Collateral Standard Electromagnetic Compatibility - Requirements and Tests.

A-5

Appendix

A-56600-0291-000 2/24/97

Mechanical specifications

Incubator with cabinet

Height: 135.9 cm (53.5 in)Depth: 64.8 cm (25.5 in)Width: 88.9 cm (35.0 in)Weight: 84.04 kg (185 lbs)Casters: 3 inch diameter, 2 locking, 2 non-lockingHeightto bed: 92 cm (36 in.)

Incubator only

Height: 62.2 cm (24.5 in)Depth: 61.5 cm (24.2 in)Width: 83.1 cm (32.7 in)Mattress: 34.8 x 65.0 cm (13.7 x 25.6 in)

Maximum Load:30 lbs. (13.6 kg)Tilt Positions:

Two Position: 0 degrees or 10 degrees

A-6

Appendix

A-66600-0291-000 2/24/97

GlossaryNote: A Note provides additional information to clarify a point in the text.

Important: An Important statement is similar to a Note but used for greater emphasis.

CAUTION: A CAUTION statement is used when the possibility of damage to theequipment exists.

WARNING: A WARNING statement is used when the possibility of injury to the patientor the operator exists.

Accuracy: As stated in the performance specifications, the assigned accuracy of theequipment; including all the system components from the sensors to the display.

Desired Environmental Temperature (DET): The air temperature required to maintainthe infant’s temperature at the patient control temperature (patient control mode).

Air Control Mode: Manual Mode of operation. The incubator air temperature is main-tained at the air control temperature.

Incubator Temperature: The air temperature measured at a point 10 centimeters (4inches) above the center of the mattress.

Patient Control Mode: Servo Mode of operation. The incubator changes the DET tomaintain the desired patient skin temperature.

Patient Probe: The Ohio patient temperature probe, model LA003, or the Ohmeda skintemperature probe, model LA005.

Temperature Rise Time: The time required for the incubator temperature to rise 11°C.

Temperature Equilibrium: The condition where the average incubator temperature doesnot vary by more than 0.2°C in a one hour period.

Temperature Variability: The maximum difference between the incubator temperatureand the average incubator temperature during temperature equilibrium.

Temperature Overshoot: The number of degrees by which the maximum incubatortemperature exceeds the average incubator temperature at temperature equilibriumfollowing a change in the air control temperature (air control mode).

w Indicates a WARNINGor a CAUTION in the text

m Type B electrical equipment

x Protective ground

y Functional ground

~ Alternating Current (AC)

Patient Temperature

Air Temperature

Control Temperature

Alarm

Controls

Upper IV Pole: 2.3 kg MaxLower IV Pole: 12 kg Max

IV Pole is not a handle

Lower IV Pole to 143 cmMax during transport

Air Circulation Failure

Probe Failure

System Failure

Power Failure

Air Control Mode

Patient Control Mode

Enable

Raise Temperature

Lower Temperature

}

}

A-7

Appendix

A-76600-0291-000 2/24/97

Warranty

W-1

This Product is sold by Ohmeda under the warranties set forth in the followingparagraphs. Such warranties are extended only with respect to the purchase of thisProduct directly from Ohmeda or Ohmeda’s Authorized Dealers as new merchandiseand are extended to the Buyer thereof, other than for the purpose of resale.

For a period of twelve (12) months from the date of original delivery to Buyer or toBuyer’s order, but in no event for a period of more than two years from the date oforiginal delivery by Ohmeda to an Ohmeda Authorized Dealer, this Product, other thanits expendable parts, is warranted to be free from functional defects in materials andworkmanship and to conform to the description of the Product contained in thisoperation manual and accompanying labels and/or inserts, provided that the same isproperly operated under the conditions of normal use, that regular periodicmaintenance and service is performed and that replacements and repairs are made inaccordance with the instructions provided. This same warranty is made for a period ofthirty (30) days with respect to expendable parts. The foregoing warranties shall notapply if the Product has been repaired other than by Ohmeda or in accordance withwritten instructions provided by Ohmeda, or altered by anyone other than Ohmeda, or ifthe Product has been subject to abuse, misuse, negligence, or accident.

Ohmeda’s sole and exclusive obligation and Buyer’s sole and exclusive remedy underthe above warranties is limited to repairing or replacing, free of charge, at Ohmeda’soption, a Product, which is telephonically reported to the nearest Ohmeda Field ServiceSupport Center and which, if so advised by Ohmeda, is thereafter returned with astatement of the observed deficiency, not later than seven (7) days after the expirationdate of the applicable warranty, to the Ohmeda Service and Distribution Center duringnormal business hours, transportation charges prepaid, and which, upon Ohmeda’sexamination, is found not to conform with above warranties. Ohmeda shall not beotherwise liable for any damages including but not limited to incidental damages,consequential damages, or special damages.

There are no express or implied warranties which extend beyond the warrantieshereinabove set forth. Ohmeda makes no warranty of merchantability or fitness for aparticular purpose with respect to the product or parts thereof.

Cvr Chg06 00

6600 0291 0002 97 0 13 10 06Printed in USA

© Ohmeda Medical

North America

United States

Customer Service andDistribution CenterDatex-Ohmeda, Inc.Ohmeda DrivePO Box 7550Madison, WI 53707-7550Tel 1 800 345 2700Fax 1 608 221 4384

Technical SupportDatex-Ohmeda, Inc.Three Highwood DriveTewksbury, MA 01876Tel 1 800 345 2755

Sales and ServiceDatex-Ohmeda, Inc.Three Highwood DriveTewksbury, MA 01876Tel 1 800 635 6099Fax 1 978 640 0469

Equipment Service CenterDatex-Ohmeda, Inc.1315 West Century DriveLouisville, CO 80027-9560Tel 1 800 345 2755

Canada

Dynamed Health Care Systems235 Shields CourtMarkham, Ontario L3R 8V2CanadaToll Free 800 227 7215Tel 905 752 3300Fax 905 752 3304

Asia/Pacific

JapanDatex-Ohmeda K. K.TRC Annex 9F6-1-1 HeiwajimaOhta-ku, Tokyo 143-0006JapanTel 81 3 5763 6801Fax 81 3 5763 6838

Datex-Ohmeda K. K.Technical CenterTRC A Bldg. AE 4-86-1-1 HeiwajimaOhta-ku, Tokyo 143-0006JapanTel 81 3 5763 6850Fax 81 3 5763 6852

MalaysiaDatex-Ohmeda13 Jalan 223Level 2 Bangunan O'connors46100 Petaling JayaSelangor, MalaysiaTel 60 3 754 7872Fax 60 3 757 6948

SingaporeDatex-Ohmeda Pte. Ltd.152 Beach Road#12-05/07 Gateway EastSingapore 189721Tel 65 391 8618Fax 65 291 6618

AustraliaDatex-Ohmeda Pty. Ltd.Units 1 & 2149 Arthur StreetP O Box 356HomebushNSW 2140AustraliaTel 61 132 229Fax 61 297 461796

Europe

FranceDatex-Ohmeda S.A.S.17 rue Jean-Elysée DupuyF-69410 Champagne Au Montd'OrFranceTel 33 01 30 68 60 00Fax 33 04 78 43 26 58

GermanyDatex-Ohmeda GmbHDr-Alfred-Herrhausen-Allee 24D-47228GermanyTel 49 2065 691 0Fax 49 2065 691 236

ItalyDatex-Ohmeda S.p.A.Via Cassanese, 10020090 Segrate, MilanItalyTel 39 2 21693431Fax 39 2 26926226

NetherlandsDatex-Ohmeda B.V.Kantemarsweg 18Post Box 223870 CA HoevelakenNetherlandsTel 31 33 253 5404Fax 31 33 253 7223

SpainDatex-Ohmeda S.L.C/Manuel Tovar 2628034 MadridSpainTel 34 1 334 26 00Fax 34 1 358 12 84

United KingdomDatex-Ohmeda Ltd.Ohmeda House71 Great North RoadHatfield HertfordshireAL9 5EN EnglandTel 44 1707 263570Fax 44 1707 260191

Latin America,CaribbeanDatex-Ohmeda Latin America10685 North Kendall DriveMiami, FL 33176USATel 1 305 273 9940Fax 1 305 273 4382

Ohmeda Medical8880 Gorman RoadLaurel MD 20723USA410-381-2555

For distributor locations worldwidewww.ohmedamedical.com

Documents

Ohio Ic Incubator