Rc 744 Operator Manual

Operators Manual

Flow Chart

Replace: Valve Module, Replace Others

Test Fluidics, Test Components, Sensor Status, Prime Fluids

Whole Blood, Serum, or Plasma Analysis

End of Day Cleaning

Analyze Level 1, Level 2, Level 3 Controls,Analyze Proficiency Samples

Urine Analysis

Fluid Conservation, Maintenance

View: Patient Results, QC Results, Calibration Data, Reagent Module Status;

Print: Setup

Set: User Options, Configuration,Calibration Options, Reference Limits;

Delete: Patient/QC Data;Adjust Display

LIFT SAMPLER TOANALYZE

DAILY CLEANER?

ANALYZE QC?

yes no

noyes

no

no

yes

yes

yes no

noyes

no

no

STANDBY?

ANALYZE URINE?

noyes

CALIBRATE?

SECOND MENU?

STOREDINFORMATION?

Calibration

SETUP MENU?

DIAGNOSTICS?

REPLACECOMPONENTS?

no

yes

yes

yes

CALIBRATE?

yes

ANALYZE SAMPLE?

noyes

no

Operators Manual

Cat. 069214672002 Bayer CorporationAll rights reserved.

All Rights Reserved

No part of this manual or the products it describes may be reproduced by any member of any means or in any form without prior consent inwriting from Bayer Corporation.

The Rapidchem 744 analyzer is for In Vitro Diagnostic Use.Rapidchem 744 and RapidQCPlus are trademarks of Bayer Corporation.

The information in this manual was correct at the time or printing. However, Bayer Diagnostics continues to improve products and reservesthe right to change specifications, equipment, and maintenance procedures at any time without notice.

1 Understanding the RapidChem 744 AnalyzerIntended Use ......................................................................................................................................1Clinical Summary of Electrolytes ..........................................................................................................1Operational Hazards and Precautions..................................................................................................4

2 Analyzer InstallationUnpacking..........................................................................................................................................7Location..............................................................................................................................................8Power Up ..........................................................................................................................................9Date/Time........................................................................................................................................10Components ....................................................................................................................................10

3 Analyzer LayoutFront View ......................................................................................................................................15Rear View ........................................................................................................................................16Keypad............................................................................................................................................17Display ............................................................................................................................................17Fluid Path/Module Descriptions ........................................................................................................18

4 Operating the AnalyzerCalibrate? ........................................................................................................................................21Analyze Sample? ............................................................................................................................23Analyze QC? ..................................................................................................................................29Daily Cleaner? ................................................................................................................................37Second Menu? ................................................................................................................................39Analyze Urine? ................................................................................................................................40Standby?..........................................................................................................................................43Replace Components? ......................................................................................................................44Diagnostics? ....................................................................................................................................60Stored Information? ..........................................................................................................................66Setup Menu? ....................................................................................................................................69

Contents

5 Sample Handling and CollectionVacuum Collection Tubes ..................................................................................................................77Syringe Sample ................................................................................................................................79Capillary Sample..............................................................................................................................79Interfering Substances ......................................................................................................................80Urine Sample ..................................................................................................................................81Expected Values ..............................................................................................................................81

6 Principles of Operation/Theory................................................................................................................................................83

Sensor Measurement Diagram ..........................................................................................................85

7 Specifications................................................................................................................................................87

8 Rapidchem Setup Defaults................................................................................................................................................91

9 TroubleshootingIntroduction ......................................................................................................................................93Sensors ............................................................................................................................................95Flow ............................................................................................................................................100Reagent Module ............................................................................................................................108Sensor Module ..............................................................................................................................109Valve Module ................................................................................................................................110Printer............................................................................................................................................111Hardware ......................................................................................................................................112Quality Control ..............................................................................................................................112

10 Computer Connection..............................................................................................................................................113

11 Replacement Schedule..............................................................................................................................................115

AppendixesAppendix A: Protecting Yourself from Biohazards ....................................................................117Appendix B: Contacting Bayer Diagnostics ..............................................................................119Appendix C: Standard System Warranty and Service Delivery Policy ........................................123

11 Understanding the Rapidchem 744 Analyzer

Intended UseThe Rapidchem 744 analyzer is designed for clinical laboratory use,making direct quantitative measurements of Na+ (sodium), K+ (potas-sium), and Cl- (chloride) in serum, plasma, whole blood, and urinesamples. Sampling may be performed from collection tubes, syringes,capillary tubes, or sample cups. The analyzer must be used with theproper quality control materials (as specified under RecommendedMaterial in the Analyze QC? chapter), specially packaged calibrants,and maintained as described in this manual in order to obtain accu-rate results.

This Operators Manual will assist you in using the analyzer. Easy-to-follow instructions guide you through analyzer setup and operation. Display messages and flow charts are combined with the written instructions for quick reference.

Clinical Summary of Electrolytes

Sodium is the major cation in extracellular liquid and has a majoreffect on osmotic pressure and water distribution between cells, plas-ma, and interstitial fluid. Low sodium imbalance (Hyponatremia) isassociated with diarrhea, severe polyuria, metabolic acidosis,Addisons disease and renal tubular disease. High sodium imbalance(Hypernatremia) is associated with hyperadrenalism, severe dehydra-tion, brain injury, diabetic coma, and excess treatment with sodiumsalts.

Potassium is the major cation in intracellular liquid. Potassium imbal-ance has a direct effect on muscle irritability, myocardial function, andrespiration. Some conditions that effect potassium levels in bloodinclude hypoaldosternism, diarrhea, vomiting, and therapy withdiurectics for hypertension or cardiac disease. Unlike sodium andchloride there is no mechanism to maintain a threshold potassiumlevel in the body. This deficiency and the large contact between intra-and extracellular levels makes monitoring for correct levels of potassi-um essential.

2 R A P I D C H E M 74 4 O P E R A T O R S M A N U A L

Chloride is the major extracellular anion and it has a direct effect onosmotic pressure, water distribution, and anion-cation balance. Lowchloride levels are caused by chronic pyelonephritis, Addisonian crisis,metabolic acidosis, and prolonged vomiting. High chloride levels areobserved in dehydration, congestive heart failure, hyperparathyroidism,and extensive treatment with or intake of chloride.

Symbols used throughout the manual:

Rapidchem 744 display messages shown in display type

important information

conditions which may cause data loss or analyzer malfunction

biohazard warning

sampler positioning required by operator

sample container mode

capillary sample mode

compression plate positioning required by operator

U N D E R S T A N D I N G T H E R A P I D C H E M A N A L Y Z E R 3

DDIISSPPLLAAYY MMEESSSSAAGGEESS


Operational Hazards and Precautions

Read the Operators Manual before setting up or operating theRapidchem 744 analyzer.

Observe all Warnings, Notes, and Key Information in this manual.

Failure to leave the analyzer connected to power with a reagent mod-ule in place could damage the sensors, sensor module, valve module,and pump tubing.

There are no operator-serviceable parts inside the analyzer. Whenelectromechanical problems beyond the scope of this OperatorsManual are suspected, DO NOT open the back cover. Contact yourBayer Representative.

Use only the supplied 3-wire (UL approved) power cord, or equiva-lent. The power cord of the analyzer must be connected to a matchinggrounded outlet supplying 100-120~VAC, 50/60 Hz or 220-240~VAC, 50/60 Hz. The analyzer contains sensitive electronics andmust be properly grounded.

DO NOT plug the analyzer into a circuit protected by a Ground FaultInterrupter (GFI).

The safety protection provided by the analyzer may be impaired whenthe analyzer is used in any way other than as is outlined in this manual.

BIOHAZARD: All samples should be considered biohazardous (contaminated with HIV or other pathogens). Any replaceable com-ponent which comes in contact with biological samples, includingthe sample probe, sensors, sensor module, pump tubing, valvemodule and reagent module may contain contaminated material.Treat all components, during use and disposal, as you would anybiohazardous material.

U N D E R S T A N D I N G T H E R A P I D C H E M A N A L Y Z E R 5

To clean the outside surfaces of the Rapidchem 744 analyzer, use acleaning agent consisting of a 10% bleach (0.4-0.6% NaClO)solution. Dampen a cloth with solution to wipe down all outside sur-faces. Protective clothing and gloves are recommended. Refer to theAnalyzer Surface Cleaning/Storage instructions outlined under Replace Components? in Operating the Analyzer.

To clean any component, use only water or bleach (NaClO) solutions. DO NOT use solvents (examples: methyl alcohol, ethylalcohol, isopropyl alcohol).

2 Analyzer Installation

UnpackingCarefully remove the Rapidchem 744 analyzer and accessories from the shipping containers and place them on a solid work surface. Visually inspect for any damage sustained during shipment. If damage is found, or if items are missing, promptly notify your Bayer representative.

yes no1 2

0

34 5

67 8

9 REF

pH

PCO2

PO2

PCO2

K+ Sensor

Na+ Sensor

Cl- Sensor

Spacer Sensor

Reference Sensor

Power Cord

Reagent Module

Rapidlyte Analyzer with Valve Module, Sensor Module,Pump Tubing

7


LocationThe analyzer operates in the ambient (room) temperature range from15 to 32C (59 to 90F) with a relative humidity not exceeding 90%.Choose a location which provides good ventilation and is free fromvibration and electrical interferences.

Operators Manual

Operators Manual

Daily Cleaning Solution Kit

Troubleshooting Kit

Printer Paper

A N A L Y Z E R I N S T A L L A T I O N 9

Power UpBefore connecting the analyzer to power, confirm that the factory-setpower voltage (110V or 220V) of the Rapidchem 744 analyzermatches the grounded outlet supplying the power. When set to 110,the analyzer can operate over a live voltage range of between100VAC and 120VAC 5060 Hz/ When set to 220V, the analyzercan operate over a live voltage range of 220VAC to 240VAC, 5060Hz. When factory-set to 110V, the installed fuses are 0.8 amp. Whenfactory-set to 220V, the installed fuses are 0.4 amp. If it is necessaryto switch the Rapidchem 744 power voltage setting, the correct fusesmust be installed (alternate fuses are provided). Refer to ReplaceComponents/Fuses.

When the Rapidchem 744 analyzer is powered up, the display willprompt you to set the correct date and time. See next page for details.

110

220

11

220

or

AC Power Cord Socket

Factory-set Power Voltage Setting

Fuse Holder


Date/TimeThe Rapidchem 744 analyzer has a 24 hour internal clock (e.g. 3:00p.m. would be expressed as 15:00).

At the date/time display, press yes to CCOONNFFIIRRMM?? to accept thedate and time. Press no to change the month and yes to accept yourselection. Press the number keys to enter the day, year, and time,accepting each with yes. Press no to move to the left to correct anentry. Press yes to CCOONNFFIIRRMM?? to accept the date and time.

For optional operator-selected settings, proceed toSSEECCOONNDD MMEENNUU??, SSEETTUUPP MMEENNUU??.

ComponentsPress the raised dots on the access door to open, and familiarize your-self with the Rapidchem 744 analyzer components.

DEC-06-05; 00:00CONFIRM?

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Sensors

To install the sensors, push the compression plate down until the latchlocks into the open position.

Prior to installation, remove the thin tubing segment from the referenceelectrode flow path. Install the reference sensor first, pushing it inabove the compression plate. The handle catches in the ridge on thesensor module.

Next, install the Spacer, Cl-, K+, and Na+ sensors, beginning from thebottom and proceeding upward. Prior to installation, remove the tapesealing the flow path from the K+ electrode. Each handle should catchinto the sensor module. The sensors are keyed to assure correct place-ment.

Release the compression plate by sliding the latch to the left to com-press and align the sensors within the sensor module.

Compression Plate

ReferenceElectrode

Ref

Na+K+

Cl- or Li+Spacer

Na+K+Cl-

SpacerRef

ReferenceSensor


Pump Tubing

The pump tubing is temporarily mounted on the pump shelf for ship-ment. Remove the pump tubing and install as illustrated below.

Make sure the two middle collars are pushed back completely on thepump shelf.

Large Collar

Small Collar

Pump Shelf

SmallCollar

LargeCollar

Reagent Module

Place the reagent module into the front of the analyzer. The guidearrow must point to the right side of the reagent module. Push themodule straight back, then firmly to the right to lock it into placeagainst the valve module. When correctly installed, the messageRRGGNNTT MMOODDUULLEE IINN is printed.

When all components areinstalled, confirm that the accessdoor is closed. Calibration cannow be performed. Refer toCalibrate? in Operating theAnalyzer for further instructions.


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yesno

RGNT MODULE OUT!

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yesno

RGNT MODULE IN!

3 Analyzer Layout

Front View

yes no1 2

0

34 5

67 8

9

Printer

Display ValveModule

Sampler

Sensors CompressionPlate

WastePort

SensorModule

SensorModuleRelease

Pump Tubing

Pump

ReagentModuleRelease

ReagentPorts

Reagent Module

AccessDoor

Keypad

15


Rear View

AC PowerCord Socket

Power VoltageSetting

Battery PortFuse Holder

BarcodeReaderConnection

RS-232SerialInterfaceConnection

Paper Cover

See operators manual for instructions.

RS-232 serial interface connection.

Barcode reader connection. (Use only aRapidchem 744 barcode reader.)

Battery port connection (Use only with Medica, ULapproved battery module).

Fuse

Voltage

Frequency

Current

Single phase alternating current

V

Hz

A

A N A L Y Z E R L A Y O U T 17

Press to access specific analyzer functions and to confirm information.

Press to skip specific analyzer functions and to advance to next selections.

Press to advance printer paper (#9 key).

Display

Keypad

To adjust the Rapidchem display, proceed to AADDJJUUSSTT DDIISSPPLLAAYY??under UUSSEERR OOPPTTIIOONNSS?? in the SSEETTUUPP MMEENNUU??.

Press YES to change contrast.

Press NO to exit.

yes

yes

9

1 2 3

5 6

7 8

4

0noyes

9

1 2 3

5 6

7 8

4

0noyes

9

1 2 3

5 6

7 8

4

0noyes

DISPLAYBRIGHTER?

DISPLAYDARKER?

no

no


Fluid Path/Module Descriptions

....

PUMP TUBING

PROBE

PERISTALTIC PUMPClockwise motion of thepump moves all fluidsin the same directionthrough the fluid pathsystem.

Cl- SENSOR

Na+ SENSOR

SPACER

REFERENCESENSORRef

COMPRESSIONPLATE

VALVE OUTLETREAGENT TUBES(inside valve module)

Reagentsautomaticallypumped outof module

Waste pumpedinto module

Cl-

K+Na+

BUBBLE DETECTOR

K+ SENSOR

Reagent Module

Disposable module contains all reagents and a waste container.

The reagent module is equipped with an electronic chip which contains encoded information which is continually read by the analyzer. This information includes:

calibrant concentrations for Na+, K+, Cl-;

current reagent module serial number and install-by date;

A N A L Y Z E R L A Y O U T 19

analyzer serial number and date on which the reagent module was firstinstalled;

number of calibrations and samples run on the current reagent module;

reagent volume % remaining; and

number of days before calibrants expire.

After each calibration, the Rapidchem 744 will print the reagent module vol-ume % remaining and the number of days remaining before calibrants expire.When the reagent module has

4 Operating the Analyzer

yes no

yes no

DAILY CLEANER?

CALIBRATE?

SECOND MENU?ANALYZE SAMPLE?

no

/ CALIBRATION /

Calibrate?

The Rapidchem 744 analyzer requires a two-point calibration after installation or changing of sensors, reagent module, or other compo-nents. Automatic two-point calibrations occur at pre-selected intervalsset under CCAALLIIBBRRAATTIIOONN OOPPTTIIOONNSS?? in the SSEETTUUPPMMEENNUU??. On-demand two-point calibrations can be initiated by pressing YES to CCAALLIIBBRRAATTEE??.

The Rapidchem 744 analyzer is factory-set to perform automatic two-point calibrations every eight hours. To change the settings, proceedto CCAALLIIBBRRAATTIIOONN OOPPTTIIOONNSS?? in the SSEETTUUPP MMEENNUU??.

To perform a two-point calibration and prepare the Rapidchem 744 analyzer for sample analysis, press yes to CCAALLIIBBRRAATTEE??. Theanalyzer displays the calibration status. Bubble detector and pumpcalibration results are printed at completion. If necessary, this infor-mation can be useful for troubleshooting. After a successful calibra-tion, the analyzer displays and prints the slope of each sensor, the %of calibrants remaining, and the number of days before expiration.After completion of a successful calibration, the analyzer displaysAANNAALLYYZZEE SSAAMMPPLLEE??.

After calibration and prior to patient sample analysis, qualitycontrol materials must be analyzed to establish the Rapidchem744 analyzers performance. This procedure is outlined underAnalyze QC? in this chapter.

001177 117744

BBUUBBBBLLEE DDEETTEECCTT OOKK

00334477 00228855

PPUUMMPPCCOOUUNNTT== 00334477

RRaappiiddllyyttee

CCAALLIIBBRRAATTIIOONN

SSLLOOPPEESS

NNaa++ 5599..2244 mmVV//ddeeccaaddee

KK++ 6611..6699 mmVV//ddeeccaaddee

CCll-- 5500..0022 mmVV//ddeeccaaddee

RREEAAGGEENNTT MMOODDUULLEE

SSTTAATTUUSS

110000%%

MMAAYY--1111--0055;; 1144::0000

21


When a sensor does not calibrate successfully, that parameter will notbe available for analysis. Refer to SENSOR in Troubleshooting.

The analyzer will print any error detected during calibration. If anerror occurs, the analyzer will automatically attempt a second two-point calibration. If this fails, troubleshooting may be required.

During each sample analysis, the Rapidchem 744 analyzer performsa one-point calibration.

O P E R A T I N G T H E A N A L Y Z E R 23

yes no

noyes

ASPIRATING...

PROBE IN SAMPLE?

ANALYZE SAMPLE?

noyes

REMOVE SAMPLERETURN SAMPLER

ANALYZING...

DAILY CLEANER?LIFT SAMPLER TOANALYZE

Na KCl or Li

Analyze Sample?

AANNAALLYYZZEE SSAAMMPPLLEE?? is displayed after a successful calibration.

Press yes and LLIIFFTT SSAAMMPPLLEERR TTOO AANNAALLYYZZEE is displayed.

Na+ K+

Cl-

The Rapidchem 744 sampler is designed for two separate sampleentry modes. To select the sampling mode, place your thumb on theraised dots under the symbol for the desired mode, and push up to liftthe sampler.

Thumb placement for container samples. Push up.

Thumb placement for capillary samples. Push up.


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When using a syringe, it is important that the sample probe does nottouch the plunger of the syringe. If this occurs, the resulting vacuumcan damage the electrodes.

Sample Container Mode

To analyze samples from collection tubes, sample cups, or syringes(55 L minimum), lift the sampler. If the Patient ID option is turned onin the SSEETTUUPP MMEENNUU??, the PPAATTIIEENNTT IIDD?? screen is dis-played for 30 seconds. Press yes to enter the patient identificationnumber (1 minute is allowed), or no to continue. After this informationis entered, PPRROOBBEE IINN SSAAMMPPLLEE?? is displayed.


Place the probe in the sample and press yes. Hold the sample in place,keeping the probe submerged in the sample until RREEMMOOVVEE SSAAMMPPLLEE RREETTUURRNN SSAAMMPPLLEERR is displayed.

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Push the sampler down into the closed position until a beep is heard. Ifthe sampler is not completely down, a continuous beep will sound afterone minute.

If the sampler is not returned within two minutes of aspiration, thesample will be pumped to waste.

Sample analysis can be interrupted by pressing no.AANNAALLYYSSIISS IINNTTEERRRRUUPPTTEEDD is displayed before returning tothe LLIIFFTT SSAAMMPPLLEERR TTOO AANNAALLYYZZEE screen.

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When analysis is complete, the measured results are printed. Themeasured results are reported in mmol/L.

Results are automatically printed after each analysis if the printer isturned on under CCOONNFFIIGGUURRAATTIIOONN?? in the SSEETTUUPP MMEENNUU??.The measured results are compared to the normal and critical limits setunder RREEFFEERREENNCCEE LLIIMMIITTSS?? in the SSEETTUUPP MMEENNUU??.When analysis results are beyond the critical limits, they are flaggedas low () or high () on both the display and the printout. Patientresults that are outside the normal range, but not beyond the criticallimits will be flagged as low () or high () on the printout. Theseresults will also flash on the display. If any result is not within the ana-lyzers measurement range, the result is displayed and printed as -e.g., Na+ 200. The display will show 200 blinking on and off. If a parameter has not calibrated successful-ly, it will not be displayed.

Press yes or lift the sampler to analyze the next sample.

If correlated values are being used, a detected out-of-range valueresults in a display and printout using the correlation adjustment. Forexample, if the correlation for Na+ is set at 1.00x + 10.0, and themeasured Na+ is 95, the displayed and printed result will be

Capillary Mode

To analyze samples (50 L minimum) from capillary tubes, lift the sam-pler. If the Patient ID option is turned on in the SSEETTUUPP MMEENNUU??,the PPAATTIIEENNTT IIDD?? screen is displayed for 30 seconds. Press yesto enter the patient identification number (1 minute is allowed), or noto continue. After this information is entered, CCAAPPIILLLLAARRYYIINNSSEERRTTEEDD?? is displayed.


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no0

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yesno

REMOVE CAPILLARYRETURN SAMPLER

Insert the capillary tube into the capillary port. When inserted, pressyes and the sample is aspirated. RREEMMOOVVEE CCAAPPIILLLLAARRYYRREETTUURRNN SSAAMMPPLLEERR is displayed.

Capillary tubes must have an outer diameter between .059 and.065 and a minimum sample capacity of 55 L.

Push the sampler down into the closed position until a beep is heard.

Sample analysis can be interrupted by pressing no. AANNAALLYYSSIISS IINNTTEERRRRUUPPTTEEDD is displayed before returning tothe LLIIFFTT SSAAMMPPLLEERR TTOO AANNAALLYYZZEE screen.


--------------------------------------------------------------------------------

CCAAPPIILLLLAARRYY

SSAAMMPPLLEE RREESSUULLTTSS

PPAATTIIEENNTTSS NNAAMMEE

------------------------------##00000033

NNaa++ 114433..11 mmmmooll//LL

KK++ 44..0011 mmmmooll//LL

CCll-- 9977..44 mmmmooll//LL MMAAYY--1111--0055;; 1144::0011


Results are automatically printed after each analysis if the printer isturned on under CCOONNFFIIGGUURRAATTIIOONN?? in the SSEETTUUPP MMEENNUU??.The measured results are compared to the normal and critical limits setunder RREEFFEERREENNCCEE LLIIMMIITTSS?? in the SSEETTUUPP MMEENNUU??.When analysis results are beyond the critical limits, they are flaggedas low () or high () on both the display and the printout. Patientresults that are outside the normal range, but not beyond the criticallimits will be flagged as low () or high () on the printout. Theseresults will also flash on the display. If any result is not within the ana-lyzers measurement range, the result is displayed and printed as -e.g., Na+ 200. The display will show 200 blinking on and off. If a parameter has not calibrated successful-ly, it will not be displayed.

Press yes or lift the sampler to analyze the next sample.



yes

yes

yes no

ANALYZE QC?

CALIBRATE?

ANALYZEQC LEVEL 2?

ANALYZEQC LEVEL 3?

ANALYZEPROFICIENCY?

yes no

ANALYZEQC LEVEL 1?

LIFT SAMPLER TOANALYZE CONTROL

yes

PROBE INQC LEVEL 1?

ASPIRATING...

REMOVE CONTROLRETURN SAMPLER

ANALYZING...

yes no

Na+ K+Cl-

no

no

Analyze QC?


As with all clinical instrumentation, the performance of the Rapidchemanalyzer must be monitored using quality control samples. Each labo-ratory should establish their own quality control program. Bayer rec-ommends the use of protein-based quality controls every day patientsamples are analyzed and after any replacements or troubleshooting.

As part of a good quality control program, each laboratory shouldestablish their own ranges for each lot of controls. These ranges shouldbe calculated from results collected over multiple days (5-20 days).Gathering results over more days will provide better statistical data.New controls should first be run as patient samples. Confirm thatCCOORRRREELLAATTIIOONN?? is turned off under SSEETT CCOORRRREELLAATTIIOONN?? inthe SSEETTUUPP MMEENNUU??. The reference ranges for the new lot of con-trols should be made equal to + 2 standard deviations (SD) from thecalculated mean.

These ranges must, however, be examined for clinical significance.Often analyzers run with low imprecision, resulting in reference limitsthat are too tight to maintain.

Once established, enter the limits into the Rapidchem 744 ana-lyzer under RREEFFEERREENNCCEE LLIIMMIITTSS?? in the SSEETTUUPP MMEENNUU??.

The Rapidchem 744 stores quality control results for 3 levels (a maxi-mum of 31 for each level) when control samples are analyzed throughAANNAALLYYZZEE QQCC??. The results for each analyte are compared to thequality control reference limits previously entered for the chosen levelof quality control.

RapidQC controls are designed to contain Na+, K+, and Cl-values that are within the typical patient population. Each lot ofRapidchem 744 control material contains an insert sheet indicating theexpected ranges for each analyte. These ranges were established onmultiple Rapidchem 744 analyzers over multiple days. Using the 3 lev-els of controls as part of the laboratory quality control program willaid in verifying analyzer performance. If controls have results outsidethe expected ranges, the performance of the analyzer may not be opti-mum. If necessary, corrective action should be taken before reportingpatient results.


Quality Control Settings

Quality control limits and lot numbers must be entered for each new lotof quality controls, before selecting AANNAALLYYZZEE QQCC??. Proceed to theSSEECCOONNDD MMEENNUU?? and press YES to SSEETTUUPP MMEENNUU??, RREEFFEERREENNCCEE LLIIMMIITTSS??, then QQCC LLEEVVEELL 11??, QQCC LLEEVVEELL 22??, or QQCC LLEEVVEELL 33??.

It is recommended that any stored quality control results be deletedprior to entering information for a new lot of quality controls. Refer toDDEELLEETTEE DDAATTAA?? in the SSEETTUUPP MMEENNUU??.

Press YES to QQCC LLEEVVEELL 11??, QQCC LLEEVVEELL 22??, or QQCCLLEEVVEELL 33?? to enter the limits and lot number each time a new lot ofcontrols is introduced. Enter the Na+, K+ and Cl- limits using the key-pad. When all entries are complete, press YES to CCOONNFFIIRRMM??. PressNO to correct settings. Repeat for each analyte and control level.Return to AANNAALLYYZZEE QQCC?? to proceed with quality control analysis.

To enter quality control information using the barcode reader, pressYES to QQCC LLEEVVEELL 11??, QQCC LLEEVVEELL 22??, or QQCCLLEEVVEELL 33??. LLOOTT ## is displayed. Using the barcode reader, scanin the lot number provided on the quality control insert sheet. Next,NNaa++ is displayed. Scan in the Na+ range (verify that the displayedrange matches the insert sheet). Repeat for each remaining analyte.When all entries are complete, press YES to CCOONNFFIIRRMM??. Press no to correct settings. Repeat for each level of control. Return to AANNAALLYYZZEE QQCC?? to proceed with quality control analysis.

To enter quality control information using the barcode reader, Bayer Diagnostics quality controls must be used.


Quality Control Analysis

Follow the manufacturers storage and handling instructions for quali-ty control material before proceeding with quality control analysis.

The sampler must be in the sample container mode position.

Press YES to AANNAALLYYZZEE QQCC??. AANNAALLYYZZEE QQCC LLEEVVEELL 11?? isdisplayed. Press YES and LLIIFFTT SSAAMMPPLLEERR TTOO AANNAALLYYZZEECCOONNTTRROOLL is displayed. Dispense the control into a sample cup andanalyze.

Lift the sampler and PPRROOBBEE IINN CCOONNTTRROOLL?? is displayed.

Place the probe in the quality control material and press yes. Hold thecontainer in place, keeping the probe submerged until RREEMMOOVVEECCOONNTTRROOLL RREETTUURRNN SSAAMMPPLLEERR is displayed. Push the samplerdown into the closed position. The quality control is analyzed and re-sults for each analyte are displayed and printed. Results falling outsidethe quality control limits are flagged as () low or () high. Repeat forquality control Levels 2 and 3.

Quality control results are automatically stored when no errors aredetected and quality control limits have been entered. When morethan one sample of a control level is analyzed on the same day, themost recent results replace the results previously stored for that day.The Rapidchem 744 analyzer stores up to 31 quality control resultsfor each level.

If a result is outside the limits or an error occurs, a SSTTOORREERREESSUULLTTSS?? prompt is displayed. Press yes to store quality controlresults, or no to reject the results.

User-entered correlation values are not applied to quality controlresults.

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Stored QC Information

To view the last quality control results or to print quality control statistics, press yes to SSTTOORREEDD IINNFFOORRMMAATTIIOONN??, then QQCC RREESSUULLTTSS?? in the SSEECCOONNDD MMEENNUU??. PPRRIINNTTSSTTAATTIISSTTIICCSS?? prints the results by date, mean, standard devia-tion, and coefficient of variation for the stored quality control results. Theprinted statistics are calculated according to the following definitions:

A minimum of 5 stored quality control results is required to cal-culate statistics.

DefinitionsMean: The mean (x) is the value derived by dividing the sum () of

the observed values by the number of observations (n) storedin memory (between 5 and 31 values).

SD: The standard deviation (SD) measures dispersion within the dis-tribution of data stored.

where:

SD = standard deviation (x-x)2 = sum of the square of each difference from the mean n = number of observations

CV: The coefficient of variation (CV) is a measure (as apercentage) of the variation from the mean within theset of stored data.

_x =

valuesn

n-1 (x-x)2SD =

CV = 100 * SDx


Levey-Jennings Chart

Levey-Jennings charts plot the measured quality control results for eachday. The calculated mean value is shown by the solid, vertical centerline. The +/- 2 SD values are shown by the dashed lines. The limits ofthe charts are the mean +/- 4 SD.

The statistics reported above each chart require a minimum of 5stored quality control results. The maximum number of stored quality

09

14

19

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29

03FEB

JAN143.0

MEAN VALUES 143.0S.D. VALUES 0.63

140.5

Na+

-2SD +2SDDATE145.5

09

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29

03FEB

JAN99.4


95.4

Cl-

-2SD +2SDDATE103.5

09

14

19

24

29

03FEB

JAN3.96


3.88

K+

-2SD +2SDDATE4.05


control results is 31 for each level. One quality control result per levelcan be stored each day.

Random Errors

An isolated result which falls outside the 3 SD control limits is classifiedas a random error. When a single random error occurs, disregard theresult. When there is an increase in the frequency of random errors,there may be a problem with a particular sensor or a fluidic problem.The quality control sampling technique should also be reviewed.

Systematic Errors

A recurring measurable deviation from the mean is classified as asystematic error. One example of a systematic error is when a progressive increase or decrease in control results is noted. Possiblecauses are:

aging or protein contaminated sensor

bubbles beneath a sensor membrane

a change in calibrant

a change in temperature

a change in quality control material

aging reference sensor


If the sampling technique is acceptable and random errors continue,refer to SENSORS in Troubleshooting.

Users should follow applicable government requirements for qualitycontrol testing.

RECOMMENDED RapidQC for Rapidchem quality control material.MATERIAL:

Do not use perfluorocarbon-based or dye-containing control materialson the Rapidchem 744 analyzer. This type of control material willdamage the sensors.

PRECAUTIONS: Refer to the package insert provided with the quality control material.

RECOMMENDED Run all three control levels each day the analyzer is in use.PROCEDURE: Data are stored for future statistical analysis.

USE INSTRUCTIONS: Refer to the package insert provided with the quality control material.

STORAGE Refer to the package insert provided with the quality control material.AND STABILITY:

HANDLING: Refer to the package insert provided with the quality control material.

EXPECTED RESULTS: Refer to the package insert provided with the quality control material.


Daily Cleaner?

The fluid path must be cleaned with cleaning solution to remove protein deposits. Perform DDAAIILLYY CCLLEEAANNEERR?? after every 50samples, or once a day when fewer than 50 samples are analyzed.

Press yes to DDAAIILLYY CCLLEEAANNEERR??. LLIIFFTT SSAAMMPPLLEERR TTOOUUSSEE CCLLEEAANNEERR is displayed. The sampler must be in the samplecontainer mode position. Lift the sampler until PPRROOBBEE IINNCCLLEEAANNEERR?? appears. Insert the probe into the cleaning solution andpress YES to aspirate. Hold the container in place until RREEMMOOVVEECCLLEEAANNEERR RREETTUURRNN SSAAMMPPLLEERR is displayed.

Push the sampler down into the closed position. The cleaning cycle iscomplete in 75 seconds. If CCOONNTTIINNUUOOUUSS CCAALLIIBBRRAATTIIOONN??is enabled, the Rapidchem performs an automatic calibration aftercleaning and is ready to analyze samples. If CCOONNTTIINNUUOOUUSSCCAALLIIBBRRAATTIIOONN?? is off, the Rapidchem enters ******SSTTAANNDDBBYY****** without calibrating. Calibration is requiredbefore samples can be analyzed.

If a cleaning cycle is not performed at the end of the previous day,automatic calibration does not take place. A cleaning cycle must becompleted before calibration or sample analysis will is permitted.When MMUUSSTT UUSSEE CCLLEEAANNEERR is displayed, a cleaning cyclemust be completed before calibration or sample analysis is permitted.Performing a cleaning cycle is the only daily maintenance required,and is essential to promote trouble-free analyzer operation.

yes no

DAILY CLEANER?

ANALYZE QC?

yes

LIFT SAMPLERTO USE CLEANER

PROBE INCLEANER?

REMOVE CLEANERRETURN SAMPLER

CLEANING...

***STANDBY***

IF CALIBRATED

ASPIRATING...

Probe

CleaningSolution


As preventive maintenance, a more aggressive cleaning procedurecan be performed to remove accumulated protein within the sampler.The frequency of this procedure is dependent on the number andquality (high protein concentrations) of patient samples run. This procedure can be performed infrequently (once every 6 months) or asfrequently as once per month. Each laboratory should establish theirown preventive maintenance program. To perform this preventivemaintenance, refer to the Sample probe/sensor moduleobstructions procedure found under FLOW in Troubleshooting.


Second Menu?

REPLACECOMPONENTS?

Replace: Valve Module, Replace Others

Test Fluidics, Test Components, Sensor Status, Prime Fluids

Fluid Conservation, Maintenance

View: Patient Results, QC Results, Calibration Data, Reagent Module Status

Print: Setup

Set: User Options, Configuration,Calibration Options, Reference Limits

Delete: Patient/QC Data;Adjust Display

yes no

noyes

no

noyes

noyes

SECOND MENU?

noyes

STOREDINFORMATION?

SETUP MENU?

ANALYZE URINE?

DIAGNOSTICS?

yes

STANDBY?

Appears whencalibrated

ANALYZE SAMPLE?

Appears whencalibrated

Answer yes to RREETTUURRNN TTOO MMAAIINN MMEENNUU?? throughout theSSEECCOONNDD MMEENNUU?? for quick access to the Rapidchem 744 mainmenu items.

yes

yes

ASPIRATING...

PROBE IN 1:10DILUTED SAMPLE?

ANALYZE URINE?

noyes


ANALYZING...

STANDBY?

LIFT SAMPLER TOANALYZE URINE

Na+ K+ Cl-

no


Na+ K+

Cl-

Analyze Urine?

To obtain urine samples, follow the procedures and precautionsdescribed under Sample Handling and Collection.

The performance of the Rapidchem 744 urine mode must be moni-tored using a commercially available urine control. Analyze the con-trol sample as a urine patient sample.

Dilute 1 part urine specimen to 9 parts Urine Diluent. Use Rapidchem 744 Urine Diluent (Cat. No. 00938058). Errors in dilutionwill cause inaccurate analysis results.

Press yes to AANNAALLYYZZEE UURRIINNEE?? . LLIIFFTT SSAAMMPPLLEERR TTOOAANNAALLYYZZEE UURRIINNEE is displayed.

If the last sample analyzed was a blood or quality control sample, theanalyzer first conditions the sensors with Calibrant B when AANNAALLYYZZEE UURRIINNEE?? is selected.


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To analyze diluted urine samples from sample cups (300 L minimum),lift the sampler. If the Patient ID option is turned on in the SSEETTUUPPMMEENNUU??, the PPAATTIIEENNTT IIDD?? screen displays for 30 seconds.Press yes to enter the patient identification number (1 minute isallowed) or no to continue. After this information is entered, PPRROOBBEEIINN DDIILLUUTTEEDD SSAAMMPPLLEE?? is displayed. The urine sample mustbe diluted. Do not analyze undiluted urine!

Place the probe in the diluted sample and press yes. Hold the samplein place, keeping the probe submerged in the sample until RREEMMOOVVEESSAAMMPPLLEE RREETTUURRNN SSAAMMPPLLEERR is displayed.

Push the sampler down into the closed position.

Sample analysis can be interrupted by pressing no. AANNAALLYYSSIISSIINNTTEERRRRUUPPTTEEDD is displayed before returning to the LLIIFFTTSSAAMMPPLLEERR TTOO AANNAALLYYZZEE UURRIINNEE screen.



Results are automatically printed after each analysis if the printer isturned on under CCOONNFFIIGGUURRAATTIIOONN?? in the SSEETTUUPP MMEENNUU??.The measured results are compared to the normal limits set underRREEFFEERREENNCCEE LLIIMMIITTSS?? in the SSEETTUUPP MMEENNUU??. Patientresults that are outside the normal limits will be flagged as low () orhigh () on the printout. These results will also flash on the display. Ifany result is not within the analyzers measurement range, the result isdisplayed and printed as - e.g., Na+ 300. Thedisplay will show 300 blinking on and off. If a parameterhas not calibrated successfully, it will not be displayed.

These urine results have been corrected for the sample predilution.

If any value in the urine mode for sodium, potassium, or chloride fallsoutside the measurement range, these samples can be analyzed as follows:

1 Dilute 1 part of sample with 19 parts of urine diluent.

2 Proceed as before, answering yes to PPRROOBBEE IINN DDIILLUUTTEEDD SSAAMMPPLLEE??.

3 Multiply displayed results by two.

--------------------------------------------------------------------------------

UURRIINNEE RREESSUULLTTSS

PPAATTIIEENNTTSS NNAAMMEE

------------------------------##00000022

NNaa++ 117722.. 44 mmmmooll//LL

KK++ 6611..4422 mmmmooll//LL

CCll-- 112222.. 22 mmmmooll//LL

MMAAYY--1111--0055;; 1144::0011


Standby?

Standby is activated manually or automatically to conserve fluids dur-ing long periods of inactivity. When in SSTTAANNDDBBYY??, the analyzerdiscontinues automatic calibrations.

Manual Activation

Press YES to SSTTAANNDDBBYY?? in the SSEECCOONNDD MMEENNUU??. The displayflashes SSTTAANNDDBBYY IINN 11 MMIINN. If no is pressed or if thesampler is raised, Standby is cancelled.

Automatic Activation

Turn CCOONNTTIINNUUOOUUSS CCAALLIIBBRRAATTIIOONN?? off underCCAALLIIBBRRAATTIIOONN OOPPTTIIOONNSS?? in the SSEETTUUPP MMEENNUU??.The analyzer will enter SSTTAANNDDBBYY?? at the next scheduled calibra-tion if no patient or quality control samples have been analyzed sincethe last calibration. The analyzer enters ******SSTTAANNDDBBYY****** after acleaning cycle when CCOONNTTIINNUUOOUUSS CCAALLIIBBRRAATTIIOONN?? is off.

During Standby, the display reads ******SSTTAANNDDBBYY******.A calibration is always required before sample analysis, after deacti-vating Standby.

Deactivation

From the ******SSTTAANNDDBBYY****** display, press no. Once Standby isdeactivated, CCAALLIIBBRRAATTEE?? is displayed. A calibration is requiredbefore sample analysis. MMUUSSTT UUSSEE CCLLEEAANNEERR is displayed if acleaning is required before calibration.

yes

no

yes no

STANDBY?

REPLACE COMPONENTS?

no

STANDBY IN 1 MIN

***STANDBY***

yes

CALIBRATE?

SECOND MENU?

ANALYZE SAMPLE?

no

CALIBRATION


Replace Components?

The Rapidchem 744 analyzer contains components which require peri-odic replacement. These components include the sensors (Na+, K+, Cl-and Reference) and reagent module. The replacement schedule belowmust be followed to properly maintain the Rapidchem 744 analyzer.

It is recommended that quality control materials be analyzed after anycomponent is replaced.

yes no

REPLACE COMPONENTS?

DIAGNOSTICS?

REPLACE OTHERS?yes no

VALVE MODULE?

PURGING...

REMOVEREAGENT MODULE

PUMP TUBING Replace every 6 months

VALVE MODULE Replace as required

SENSOR MODULE Replace as required

SAMPLER Replace as required

Na+ SENSOR Replace as required

K+ SENSOR Replace as required

Cl- SENSOR Replace as required

REFERENCE SENSOR Replace every 6 months

REAGENT MODULE Replace when empty or expired

PRINTER PAPER Replace as required

PROBE WIPER Replace every 3 months


To replace Rapidchem 744 components, you must first press yes to RREEPPLLAACCEE CCOOMMPPOONNEENNTTSS?? in the SSEECCOONNDD MMEENNUU??, thenproceed with component replacement as described in this section. Ifany replacement procedure exceeds 20 minutes, the analyzer beepsand NNEEEEDD MMOORREE TTIIMMEE?? is displayed. Press yes to return to theprevious screen.

Reagent Module

If the Rapidchem 744 displays RRGGNNTT MMOODD EEMMPPTTYY or RRGGNNTT MMOODD EEXXPPIIRREEDD, it is necessary to install a new reagentmodule. Press YES to RREEPPLLAACCEE CCOOMMPPOONNEENNTTSS??, thenRREEPPLLAACCEE OOTTHHEERRSS??. Fluid is automatically purged from the sample flow path. Open the access door. Push in the reagent module release lever while holding the reagent module on the left side. Pull themodule to the left. When the guide arrow points to the right edge of thereagent module, pull the module straight out from the front of the analyzer.

yes no

2 315 648 97

0yes no

2

5 68 97

1

4

0

BIOHAZARD: Used reagent module contains biohazardous waste.Dispose of in accordance with local, state, or federal requirements.


Place the new reagent module into the front of the analyzer. The guidearrow must point to the right edge of the reagent module. Push themodule straight back, then firmly to the right to lock it into placeagainst the valve module until you hear a click. Press yes toRREEPPLLAACCEEMMEENNTT CCOOMMPPLLEETTEEDD??. The reagents are automatical-ly primed from the reagent module. When priming is complete, thedisplay indicates if a failure exists. Press yes to RREETTUURRNN TTOOMMAAIINN MMEENNUU??.

The reagent module contains encoded information which is read bythe analyzer upon installation of the reagent module. This informationincludes: reagent Na+, K+, and Cl- values, and the install-by date ofthe reagent module.

Sensors

The best indicator that a sensor (Na+, K+, and Cl-) requires replace-ment is when the Rapidchem 744 displays SSLLOOPPEE / , mmVV OOUUTT,DDRRIIFFTT or NNOOIISSEE for a single sensor. These messages generallyindicate that the sensor is not functioning correctly. The reference sen-sor has a small red bead floating on top of the internal fill solution. Ifthe KCl concentration falls below a certain critical concentration, thebead will no longer float and the reference sensor should be replaced.For detailed information, refer to the Troubleshooting chapter ofthis manual.

To remove or replace a sensor, press YES to RREEPPLLAACCEEOOTTHHEERRSS??. Fluid is automatically purged from the sample flow path.When the purge cycle is complete, RREEPPLLAACCEEMMEENNTTCCOOMMPPLLEETTEEDD?? is displayed. Proceed with sensor replacement.

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yes01

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no

yes01

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no


To remove a sensor, push the compression plate down until the latchlocks into the open position.

Grip the desired sensor handle, squeeze, and pull it straight out fromthe sensor module.

To install a new sensor, push the sensor into its designated position.The handle snaps into the sensor module. Each sensor is keyed toassure correct placement. DO NOT FORCE.

Release the compression plate by pressing down on the compressionplate, then sliding the latch to the left to compress the sensors withinthe sensor module.

Press YES to RREEPPLLAACCEEMMEENNTT CCOOMMPPLLEETTEEDD??. Reagents areautomatically primed from the reagent module. When priming is complete, the display indicates if a failure exists. Press yes toRREETTUURRNN TTOO MMAAIINN MMEENNUU??.

It is necessary that you recalibrate when replacements are completed.

Ref

NaK

Cl or LiSpacer

Na+

K+

Cl-

Spacer

Ref


Pump Tubing

Replace the pump tubing every six months, or earlier if the pumptubing appears worn or flattened. Press yes to RREEPPLLAACCEE OOTTHHEERRSS??. Fluid is automatically purged from the sample flowpath. When the purge cycle is complete, proceed with pumptubing replacement.

Remove the pump tubing.

Install the new pump tubing.

Make sure the two middle collars are pushed back completely on thepump shelf.

Press YES to RREEPPLLAACCEEMMEENNTT CCOOMMPPLLEETTEEDD?? Reagents areautomatically primed from the reagent module. When priming is complete, the display indicates if a failure exists. Press yes toRREETTUURRNN TTOO MMAAIINN MMEENNUU??.

It is necessary to recalibrate when replacements are completed.

Large Collar

Small Collar

Pump Shelf

SmallCollar

LargeCollar


Probe Wiper

Probe wipers should be changed every 3 months. In some cases theymay last longer, as the frequency of probe wiper replacement dependson the number and type of samples analyzed. If the motion of the sam-pler becomes difficult, wipe the probe with an oil wipe. If the samplersmotion continues to be difficult, the probe wiper may need replacement.

Raise the sampler to the capillary sample position.

Using the tool supplied in the probe wiper replacement kit, turn theprobe wiper 90 to unlock. This will align the notches on the probewiper with the notch on the sampler.

Use the tool supplied in the probe wiper replacement kit to pry theused probe wiper from the sampler.

Push the sampler down into the closed position, then raise the samplerto the sample container mode. Wipe the probe with an oil wipe (pro-vided in the probe wiper replacement kit).

Insert the new probe wiper with the notches aligned. With the toolsupplied in the probe wiper replacement kit, turn the probe wiper 90into the locked position. Lower and raise the probe into the samplecontainer mode several times to verify proper probe motion.

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Sensor Module/SamplerSensor module or sampler replacement should be infrequent. SensorModule replacement will be necessary only if certain display messagesbecome chronic (refer to SENSOR MODULE in Troubleshooting).

Press YES to RREEPPLLAACCEE OOTTHHEERRSS??. Fluid is automatically purgedfrom the sample flow path. When the purge cycle is complete, proceedwith sensor module and/or sampler replacement. To remove the sen-sor module from the analyzer, first remove the pump tubing and disen-gage the sampler by slightly lifting the sampler until it unlocks from thevalve module.

Pull the release lever and the sensor module is disengaged. Removefrom the analyzer.

Slightly LiftSampler

ReleaseLever


Sampler Removal

To remove the sampler from the sensor module, place the sensor module on its side with the sampler side up. Using a coin or fingers,remove the retaining screw from the sensor module. Remove the screwmount (includes spring).

Rotate the sampler into the capillary mode position, then pull it out ofthe sensor module.

Installation

Install the new sampler (includes sample probe and wiper) in the sensor module. Insert the sampler alignment pin into the sensor module. Rotate the sampler into the closed position.

Install the screw mount (includes spring) into the sampler. Replace theretaining screw and tighten. DO NOT overtighten.

AlignmentPin


After installing a new sampler, reinstall the complete sensor module.Lift the sampler up slightly. Place the sensor module on the alignmentpin and, using your thumb, push it straight back into position.

Reconnect the pump tubing to the valve module and sensor module.Push the sampler down into the closed position.

Press YES to RREEPPLLAACCEEMMEENNTT CCOOMMPPLLEETTEEDD??. Reagents areautomatically primed from the reagent module. When priming is com-plete, the display indicates if a failure exists. Press yes to RREETTUURRNN TTOO MMAAIINN MMEENNUU??.

If the sampler was replaced, the sampler switches should be checkedfor proper function. Perform the SSAAMMPPLLEERR SSWWIITTCCHHEESS?? testoutlined under Diagnostics? in Operating the Analyzer.

Alignment Pin


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SmallCollar

LargeCollar


Valve Module

Valve Module replacement is necessary when a VVAALLVVEE EERRRROORRmessage becomes frequent (refer to VALVE MODULE in Troubleshooting).

To remove or replace the valve module, press yes to VVAALLVVEEMMOODDUULLEE??. Fluid is automatically purged from the sample path.RREEMMOOVVEE RREEAAGGEENNTT MMOODDUULLEE is displayed. Remove the re-agent module. PPUURRGGEE WWIITTHH AAIIRR, CCOONNTTIINNUUEE?? is dis-played. Connect the tubing from the troubleshooting kit to the valvemodule waste port with the open end placed into a waste receptacle.Press yes. Calibrant A, Calibrant B and Rinse are automaticallypurged from the valve module. When the purge cycle is complete,RREEPPLLAACCEEMMEENNTT CCOOMMPPLLEETTEEDD?? is displayed. Proceed withvalve module replacement.

Remove the pump tubing. Disengage the sampler by slightly lifting thesampler until it unlocks from the valve module. Pull the release leverand the sensor module is disengaged. Remove from the analyzer.

yes no

2

5 68 97

1

4

0


ReleaseLever


Remove the valve module by pulling it straight out.

To install a new valve module, place the valve module onto the alignment pin and push straight back.

Alignment Pin


Reinstall the sensor module. Place the sensor module on the alignmentpin and, using your thumb, push it straight back into position.

Reconnect the pump tubing to the valve module and sensor module.Push the sampler down into the closed position. Close the access door.

Reinstall the reagent module. Press yes to RREEPPLLAACCEEMMEENNTT CCOOMMPPLLEETTEEDD??. Reagents are automatically primed from thereagent module. When priming is complete, the display indicates if a failure exists. Press yes to RREETTUURRNN TTOO MMAAIINN MMEENNUU??

Alignment Pin


SmallCollar

LargeCollar

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Compression Plate

Compression plate replacement is necessary when the latch, springmechanism, or seal is damaged. To replace the compression plate,remove all the sensors. Follow the previous instructions for sensor orsensor module replacement. This will ensure that all fluids are purgedfrom the sample flow path.

Release the compression plate.

Grasp the compression plate and pull it out of the sensor module.

To install the compression plate, insert it into the sensor module. Makesure that the metal bar at the rear of the module is snapped inside thehinge tabs. Gently push down on the compression plate to engage thespring around the fluid path exit port. Reinstall the sensors asdescribed earlier in this section.

Seal

Fluid PathExit Port

CompressionPlate

MetalBar

Rear View,Sensor Module


Printer Paper

To install a new paper roll, cut the tape or adhesive off the beginningof the paper. Cut the new edge to a point in the center of the paper.Open the printer door. Gently push the pointed edge of the paper intothe slot behind the printer. Feed it from the bottom of the roll until thepaper reaches the plastic tear bar. Pull the paper by hand until the fullwidth appears at the tear bar. The paper roll rests in the tray behindthe printer. Close the printer door to protect the paper roll.

To advance the paper, press the button.

Operation of the printer without paper will damage the printer head.To operate the analyzer without paper, the printer must be turned off.To turn the printer off, refer to CCOONNFFIIGGUURRAATTIIOONN?? in theSSEETTUUPP MMEENNUU??.

Printer Door

7 8 94 5 61 2 30 noyes


Fuses

The Rapidchem 744 analyzer uses 250VAC fuses. When the voltagesetting is 110V, 0.8 amp fuses are installed. When set to 220V, 0.4amp fuses are installed. Correct fuses must be used with each voltagesetting. To replace the fuses, remove the power cord, then push downon the fuse holder release tab and pull straight out.

Remove the fuse(s) from the holder and insert the new fuse(s) (includedin accessories kit). Confirm that the fuse rating matches the power volt-age setting on the analyzer.

Reinstall the fuse holder, pushing in until it snaps into place. Connectthe power cord.

Contact your Bayer Representative when repeated fuse replacement is required.

F0.8 or F0.4


Analyzer Surface Cleaning/Storage

When complete chassis cleaning or analyzer storage is necessary,press yes to RREEPPLLAACCEE CCOOMMPPOONNEENNTTSS??, then VVAALLVVEE MMOODDUULLEE??. When the purge cycle is complete, remove the reagentmodule. PPUURRGGEE WWIITTHH AAIIRR, CCOONNTTIINNUUEE?? is displayed.Connect the troubleshooting kit tubing to the valve module waste portwith the open end placed into a waste receptacle. Press yes. CalibrantA, Calibrant B and Rinse are purged from the valve module. Removethe Sensors, sensor module, valve module and pump tube from the analyzer.

Clean the analyzer with a 10% bleach (0.4-0.6% NaClO) solution.Apply the solution to a cloth to wipe down all outside surfaces.

DO NOT use solvents (examples: methyl alcohol, ethyl alcohol, iso-propyl alcohol) or cleaners containing benzalkonium chloride.

Clean the sample port of the sampler. Clean all valve module surfaces. DO NOT run bleach solution through the sample path.

Reinstall the valve module and sensor module. The analyzer can nowbe stored. The pump tube, reagent module, Sensors, and power cordshould be stored separately.

To resume operation, insert the power cord and reinstall the pumptube, sensors, and reagent module.

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Diagnostics?

The tests and data in this section are available to examine the functionand status of individual Rapidchem 744 components and fluidics. Toidentify component defects or fluidic problems, refer to theTroubleshooting chapter in this manual.

no

yes

yes

yes

yes

yes

yes

yes

yes

yes no

yes no

no

no

no

VALVE TEST?

PUMP TEST?

DIAGNOSTICS?

SAMPLERSWITCHES?

STOREDINFORMATION?

no

no

no

TEST FLUIDICS?

no

FLUID FLOW TEST?

BUBBLE DETECTORTEST?

PUMP CALIBRATIONTEST?

yes no

no

REAGENT READER?

yes no

SENSOR STATUS?

CALIBRANT A mVs

CALIBRANT B mVs

no

PRIME FLUIDS?

yes

TEST COMPONENTS?

yes


Test Components

TTEESSTT CCOOMMPPOONNEENNTTSS?? Press yes to TTEESSTT CCOOMMPPOONNEENNTTSS?? to test the operating status ofthe pump, valve, sampler switches, and reagent reader.

PUMP TEST? Press yes to PPUUMMPP TTEESSTT?? to verify pump function. The screen dis-plays RROOTTAATTIINNGG......, then FFUULLLL RROOTTAATTIIOONN??. Look forpump rotation. When full pump rotation occurs, press yes and PPAASSSSis displayed.

When there is no pump movement or partial pump movement, pressno and FFAAIILL is displayed. Remove the pump tubing and repeat thePPUUMMPP TTEESSTT??. If the test passes, install a new pump tubing andresume operation. If the test fails, contact your Bayer Representative.

VALVE TEST? Press yes to VVAALLVVEE TTEESSTT?? to verify valve function. The screen dis-plays RROOTTAATTIINNGG......, then FFUULLLL RROOTTAATTIIOONN??. Look forrotation of the valve knob. When full valve knob rotation occurs, pressYES and TTEESSTTIINNGG...... is displayed. Internal testing verifies correctvalve positioning for the Calibrant A, Calibrant B, Rinse, Air andHome positions. At test completion, PPAASSSS or FFAAIILL is displayed.

When there is no valve knob movement or partial valve knobmovement, press no and FFAAIILL is displayed. Repeat theVVAALLVVEE TTEESSTT??. If the test fails again, the valve may have an ob-struction. Refer to Valve Module in Troubleshooting and followthe instructions for Valve module obstructions.

Valve Knob


SAMPLER SWITCHES? Press yes to SSAAMMPPLLEERR SSWWIITTCCHHEESS?? to verify the sampler positioning sensor and the sample mode switch.

CCAAPPIILLLLAARRYY MMOODDEE?? is displayed. Lift the sampler to the capil-lary mode and press yes.

SSAAMMPPLLEERR CCLLOOSSEEDD?? is displayed. Push the sampler down intothe closed position. Press yes.

SSAAMMPPLLEE CCOONNTTAAIINNEERR MMOODDEE?? is displayed. Lift the sampler tothe sample container mode and press yes.

SSAAMMPPLLEERR CCLLOOSSEEDD?? is displayed. Push the sampler down intothe closed position. PPOOSSIITTIIOONN PPAASSSS or FFAAIILL and MMOODDEEPPAASSSS or FFAAIILL are displayed. When the SSAAMMPPLLEERR SSWWIITTCCHHEESS?? test fails, refer to SENSOR MODULE inTroubleshooting.

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9

yesno


REAGENT READER? Press yes to RREEAAGGEENNTT RREEAADDEERR?? to verify reagent reader func-tion. RREEAAGGEENNTT MMOODDUULLEE RREEMMOOVVEEDD?? is displayed. Removethe reagent module and press yes. RREEAAGGEENNTT MMOODDUULLEE IINNSSTTAALLLLEEDD?? is displayed. Reinstall the same reagent module andpress YES. PPAASSSS or FFAAIILL is displayed.

If the above test fails, remove the reagent module and clean the metalcontacts on the analyzer with a damp cloth. Then dry the contactsthoroughly. Repeat the RREEAAGGEENNTT RREEAADDEERR?? test. If it fails again,contact your Bayer Representative.

yes no

2

5 68 97

1

4

0 yes no

2 315 648 97

0

yes01

47

25

86

9

no


TEST?

TEST?

Test Fluidics

The sampler must be in the closed position for the following tests.

TTEESSTT FFLLUUIIDDIICCSS?? Press YES to TTEESSTT FFLLUUIIDDIICCSS?? to test the operating status ofthe reagent flow, bubble detector and pump calibration.

FLUID FLOW TEST? Press yes to FFLLUUIIDD FFLLOOWW TTEESSTT?? to verify the flow of sample,Calibrant B, Calibrant A. When testing is complete, FFLLUUIIDD FFLLOOWW OOKK is displayed. When the test fails,NNOO FFLLUUIIDD FFLLOOWW!! is displayed. Refer to FLOW inTroubleshooting for further instructions.

BUBBLE DETECTOR Press yes to BBUUBBBBLLEE DDEETTEECCTTOORR TTEESSTT?? to verify proper airand fluid detection. During testing, the screen will display BBUUBBBBLLEECCAALL....... When testing is complete, BBUUBBBBLLEE DDEETTEECCTT OOKKor EERRRROORR BBUUBBBBLLEE DDEETTEECCTTOORR!! is displayed with readingsfor both air and fluid. The difference between the air and fluid read-ings must be greater than or equal to 60 for the bubble detector. In theevent of a failure, refer to FLOW in Troubleshooting for further instructions.

PUMP CALIBRATION Press yes to PPUUMMPP CCAALLIIBBRRAATTIIOONN TTEESSTT?? to verify properpump calibration. The pump calibration counts the number of steps required to move the leading edge of the fluid from the valve moduleto the bubble detector. The screen displays PPUUMMPP CCAALL.......When testing is complete, PPAASSSS or FFAAIILL is displayed and printedwith the number of pumping steps. The number of steps must bebetween 270 and 550. Refer to FLOW in Troubleshooting for further instructions.


Sensor Status

SSEENNSSOORR SSTTAATTUUSS?? Press yes to SSEENNSSOORR SSTTAATTUUSS?? to view the sensor millivolts.

CALIBRANT A mV's Press yes to CCAALLIIBBRRAANNTT AA mmVVss to view the sensor millivoltreadings for Calibrant A. The analyzer pumps Calibrant A in front ofthe sensors and displays the mV results.

CALIBRANT B mV's Press yes to CCAALLIIBBRRAANNTT BB mmVVss to view the sensor millivoltreadings for Calibrant B. The analyzer first evacuates the flow path.Calibrant B is pumped in front of the sensors and the analyzer displays the mV results.

When a sensor millivolt reading is out of range, refer to SENSORS in Troubleshooting for further instructions.

Millivolt Range Guidelines:

Calibrant A Calibrant B

Na+ (mV) 100150 80130

K+ (mV) 100150 120170

Cl- (mV) 50100 70120

The sensors are dependent on the reference sensor mV readings. If asingle sensor is outside the guidelines, the sensor may be deteriorat-ing. If all sensors are shifted outside both guidelines, the referencesensor may need to be replaced. Verify that the reference sensor iswithin its replacement period (refer to the Replacement Schedule).

Prime Fluids

PPRRIIMMEE FFLLUUIIDDSS?? Prime the fluid path by pumping Calibrant B, Calibrant A and Rinsefrom the reagent module.


yes no

yes no

yes no

yes yes no

yes no

yes

yes

yes

yes no

STOREDINFORMATION?

SETUP MENU?

no

QC RESULTS?

CALIBRATIONDATA?

REAGENT MODULESTATUS?

yes no

PATIENT RESULTS?

LAST PATIENTRESULTS?

PRINTDAILY RESULTS?

PRINTALL RESULTS?

no

no

PRINT SETUP?

yes

no

LAST CONTROL?

STATISTICS?

SEE STATISTICS?

LEVEL 1 STATS?

no

yes no

LEVEL 2 STATS?

noyes

yes no

no

yes no

LEVEL 3 STATS?

PRINTSTATISTICS?

LEVEL 1 STATS?

LEVEL 2 STATS?

noyes

LEVEL 3 STATS?

yes

yes

no

Stored Information?


Press yes to SSTTOORREEDD IINNFFOORRMMAATTIIOONN?? in theSSEECCOONNDD MMEENNUU?? to obtain stored information on patientand quality control results, as well as view the reference limits,calibration, and reagent module information.

PPAATTIIEENNTT RREESSUULLTTSS?? View or print stored patient results. Up to 64 results are stored.

LAST PATIENT RESULTS? View the last patients measured results.

PRINT DAILY RESULTS? Print the current days results.

PRINT ALL RESULTS? Print all stored patients measured results. Printing can becancelled by pressing no.

QQCC RREESSUULLTTSS?? View the last quality control results, print quality controlstatistics, and plot quality control charts.

LAST CONTROL? View the results for the last control samples. Choose from QC Level 1, QC Level 2, or QC Level 3.

STATISTICS? Display and print the statistics for stored quality control data bylevel. Printing can be cancelled by pressing no.

A minimum of 5 stored quality control results is required tocalculate statistics.


CCAALLIIBBRRAATTIIOONN DDAATTAA?? Print the slopes and millivolts for each sensor, and the calibration statusfor the pump and bubble detectors.

The acceptable slope ranges are:

Na+ 52 to 64 mV/decade

K+ 52 to 64 mV/decade

Cl- 40 to 55 mV/decade

RREEAAGGEENNTT MMOODDUULLEE Verify the status of the reagents in the reagent module. Print the currentreagent module serial number and installation date; the Rapidchem744 analyzer serial number on which the reagent module was firstinstalled; the number of calibrations and samples run on the currentreagent module; and the reagent volume (%) remaining with the num-ber of days remaining before calibrants expire.

PPRRIINNTT SSEETTUUPP?? Print the settings for User Options, Configuration, Patient Limits, andPatient Information. Printing can be stopped by pressing no.

SSTTAATTUUSS??


Setup Menu?

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

yes

SELECT LANGUAGE?

CHANGEDATE/TIME?

SETUP MENU?

SET CORRELATION?

SECOND MENU?USER OPTIONS?

CONFIGURATION?

PRINTER STATUS?

SECURITY CODE?

PATIENT ID?

ADJUST DISPLAY?

OPERATOR ID?

FIRST CALIBRATION?

CALIBRATIONINTERVAL?

CONTINUOUSCALIBRATION?

CALIBRATIONOPTIONS?

DELETECONTROL RESULTS?

DELETEPATIENT RESULTS?

DELETE DATA?

REFERENCE LIMITS?

QC LEVEL 1?

QC LEVEL 2?

QC LEVEL 3?

NORMAL LIMITS?

CRITICAL LIMITS?

yes no

no

no

no

no

yes

yes

yes

yes

yes

no

no

no

no

no

no

no

no

no

no

no

no

no

no

no

no

no

no

no

ENTER PASSWORD


Press yes to SSEETTUUPP MMEENNUU?? in the SSEECCOONNDD MMEENNUU?? to setthe functional parameters of the Rapidchem 744 analyzer.

Enter the security code if SSEECCUURRIITTYY CCOODDEE?? is turned on underCCOONNFFIIGGUURRAATTIIOONN??. Turning the security code on prevents unauthorized personnel from entering and changing theSSEETTUUPP MMEENNUU??.

UUSSEERR OOPPTTIIOONNSS?? Set:

CCHHAANNGGEE DDAATTEE//TTIIMMEE??, SSEELLEECCTT LLAANNGGUUAAGGEE??, SSEETTCCOORRRREELLAATTIIOONN??, AADDJJUUSSTT DDIISSPPLLAAYY??

CHANGE DATE/TIME? Press yes to CCHHAANNGGEE DDAATTEE//TTIIMMEE??. Press no to change themonth and press yes to advance to the next selection. Use the keypadto enter the day, year, and time. Press yes to CCOONNFFIIRRMM?? to acceptthe date and time.

SELECT LANGUAGE? Press yes to select the desired language, then yes to CCOONNFFIIRRMM??.

CORRELATION? The analyzer can be set to correlate with or match the results of another analyzer for both blood and urine. To correlate theRapidchem 744 analyzer to a reference analyzer, data must first becollected on samples run on both analyzers.

If SSEETT CCOORRRREELLAATTIIOONN?? is turned on under UUSSEERROOPPTTIIOONNSS??, reported patient sample results will be printed asCCOORRRREELLAATTIIOONN OONN results.

First, analyze a minimum of 10 patient samples in each of the lowabnormal, normal, and high abnormal ranges for each of the analytes.

Each patient sample must be run on both analyzers. The Rapidchem744 correlation equations must be set with the default (1.00x + 0.00)coefficients when analyzing the samples.


Next, determine the correlation factors by performing a regressionanalysis of the data. The Rapidchem 744 data must be the x data,and the reference analyzer must be the y data. The regression slopeis entered as the correlation slope, and the regression intercept isentered as the intercept.

Next, press yes to SSEETT CCOORRRREELLAATTIIOONN?? CCOORRRREELLAATTIIOONNOONN?? is displayed. Press yes to change the values. Press no to turncorrelations off. Use the keypad to enter new correlation slopesand/or intercepts for each analyte. Press yes to CCOONNFFIIRRMM?? thecorrect equation or no to edit the equation. Press yes to advance tothe next analyte.

Finally, analyze patient samples on each analyzer to confirm the correlation.



SECURITY CODE? To activate this feature, press yes to SSEECCUURRIITTYY CCOODDEE?? andthen press yes when SSEECCUURRIITTYY OONN?? is displayed.

Enter up to a four digit code by using the number keys. Press yes to CCOONNFFIIRRMM??.

The security code will be required in the future for access to theSSEETTUUPP MMEENNUU??.

To turn the security code off, press yes when SSEECCUURRIITTYY OOFFFF??is displayed. Answering no to SSEECCUURRIITTYY OOFFFF?? will requireentering the security code in the future for access to the SSEETTUUPP MMEENNUU??.

PATIENT ID? Press yes to PPAATTIIEENNTT IIDD??. Turn the patient identification optionon or off by pressing yes or no to the displayed question.

When PPAATTIIEENNTT IIDD?? is on , PPAATTIIEENNTT IIDD?? is displayedafter sample aspiration. Press yes to enter a patient identificationnumber. A maximum of 9 digits is accepted. The barcode readermay be used to enter the patient ID. When all entries are correct,press yes to CCOONNFFIIRRMM??.

OPERATOR ID? Press yes to OOPPEERRAATTOORR IIDD??. Turn the operator identificationoption on or off by pressing yes or no to the displayed question.When OOPPEERRAATTOORR IIDD?? is on, the operator will be prompted toenter their operator ID for each patient and quality control sample.A maximum of 4 digits is accepted.

CCAALLIIBBRRAATTIIOONN OOPPTTIIOONNSS?? To change the calibration parameters from the default selections, pressyes to CCAALLIIBBRRAATTIIOONN OOPPTTIIOONNSS??.

CALIBRATION INTERVAL? Press yes to CCAALLIIBBRRAATTIIOONN IINNTTEERRVVAALL?? to change the timeinterval between two-point calibrations. Toggle between 2, 4, or 8hours by pressing no to the message IINNTTEERRVVAALL == 88HHRRSS. Pressyes to confirm the selection.

The calibration interval default setting is 8 hours.


FIRST CALIBRATION? Press yes to FFIIRRSSTT CCAALLIIBBRRAATTIIOONN?? to direct the analyzer toautomatically calibrate at a specific time each day. Based on the previoussetting, the analyzer displays FFIIRRSSTT CCAALL OONN?? or FFIIRRSSTT CCAALLOOFFFF??. Press yes to FFIIRRSSTT CCAALL OONN??. The analyzer resets the cali-bration time or automatically comes out of SSTTAANNDDBBYY?? at the samehour each day and calibrates. CCHHAANNGGEE TTIIMMEE?? is displayed. If no ispressed, the previously selected time is used. If yes is pressed, FFIIRRSSTTCCAALL 0077::0000 (the default value) is displayed. The time setting can bemodified by using the number keys to change the values. Enter any timebetween 0:10 and 23:50 minute intervals. Press yes to confirm the selec-tion.

CONTINUOUS Press yes to CCOONNTTIINNUUOOUUSS CCAALLIIBBRRAATTIIOONN?? to direct theCALIBRATION? analyzer to continuously calibrate (preferred for STAT analyzer operation).

Based on the previous setting, the analyzer displays CCOONNTT.. CCAALL OONN?? orCCOONNTT..CCAALLOOFFFF??. Press yes to CCOONNTT..CCAALL OONN??. The analyzer recali-brates at the selected interval, never entering SSTTAANNDDBBYY?? (unless cleaning isnot performed). The calibration cycle is reestablished on the intervaleach day if the FFIIRRSSTT CCAALLIIBBRRAATTIIOONN?? option is enabled.Requesting SSTTAANNDDBBYY?? turns CCOONNTTIINNUUOOUUSS CCAALLIIBBRRAATTIIOONN?? offtemporarily until calibration is initiated manually or with a first calibration. The ana-lyzer only wakes up (performs an initial calibration) at the first calibration time ofthe day if the analyzer is in SSTTAANNDDBBYY?? or the previous calibration failed.

To enable all calibration options, a cleaning cycle must take placeafter completing the sample run for that day.

The Rapidchem 744 can be set to automatically calibrate at a specifictime. Press yes to FFIIRRSSTT CCAALLIIBBRRAATTIIOONN??.

RREEFFEERREENNCCEE LLIIMMIITTSS?? Press yes to RREEFFEERREENNCCEE LLIIMMIITTSS?? to set the quality control limitsfor each level, and the normal and critical patient limits.

It is recommended that any stored quality control results be deletedprior to entering information for a new lot of quality controls. Refer toDDEELLEETTEE DDAATTAA?? in the SSEETTUUPP MMEENNUU??.


QC LEVEL 1? Press yes to select the desired quality control level, and no to advanceto the next selection. Within each level, press yes to select the desiredanalyte limits, and no to advance to the next selection. Use the keypadto enter new limits. Press yes to CCOONNFFIIRRMM?? to accept the limits for aparticular level and move to the next analyte. When no is pressed as aresponse to CCOONNFFIIRRMM??, entries can be corrected.

To enter quality control information using the barcode reader,RapidQC for Rapidchem must be used.

To enter quality control information using the barcode reader, selectQQCC LLEEVVEELL 11??, QQCC LLEEVVEELL 22??, oorr QQCC LLEEVVEELL33??. LLOOTT ## is displayed. Using the barcode reader, scan in the lotnumber provided on the quality control insert sheet. Next, NNaa++ is displayed. Scan in the Na+ range (verify that the displayed rangematches the insert sheet). Repeat for KK++ and CCll--. When all entriesare complete, press yes to CCOONNFFIIRRMM??. When no is pressed as a response to CCOONNFFIIRRMM??, the settings can be corrected. Repeat foreach level of control.

NORMAL LIMITS? Set the normal range for each parameter. To change the ranges, pressyes to select the desired analyte, and no to advance to the next selec-tion. Use the keypad to enter new limits. Press yes to CCOONNFFIIRRMM?? toaccept the limits and move to the next analyte. When no is pressed asa response to CCOONNFFIIRRMM??, entries can be corrected.

When patient results fall within the normal range for the Rapidchem744 analyzer, no arrows appear with the measured results. For exam-ple, when the normal Na+ range is 136-146, no flags are displayed/printed for patient Na+ results greater than or equal to 136 and lessthan or equal to 146.

Use the default limits as a guideline. Each laboratory should establish their own normal and critical limits. Press yes to select NNOORR--MMAALL LLIIMMIITTSS?? or CCRRIITTIICCAALL LLIIMMIITTSS??.


CRITICAL LIMITS Set the critical ranges for each parameter. To change the ranges, pressyes to select the desired analyte, and no to advance to the next selec-tion. Press yes to accept a number and/or advance to the next number.Press no to change a number. Press yes to CCOONNFFIIRRMM?? to accept thelimits and move to the next analyte. When no is pressed as a responseto CCOONNFFIIRRMM??, entries can be corrected.

When analysis results are in the critical range, they are flagged as low() or high () on both the display and the printout. For example,when the critical Na+ limits are 115 and 150, a flag is dis-played/printed for patient Na+ results less than 115 or a flag isdisplayed/printed for patient Na+ results greater than 150.

Patient results that are outside the normal range, and not beyond thecritical limits will be flagged as low () or high () on the display andprintout.

DDEELLEETTEE DDAATTAA?? Delete all stored patient or quality control results.

DELETE Delete all stored patient results. Press yes to confirm deletion of allPATIENT RESULTS? patient results.

DELETE Delete stored quality control results. CONTROL RESULTS?

QC LEVEL 1?, Delete stored quality control results by level. Press yes to confirmQC LEVEL 2?, deletion of all quality control results.QC LEVEL 3?

Na+ Result (mmol/L)Reference

115 136 146 150CriticalNormalCritical

Displayed Flag

5 Sample Handling and Colle

Documents

Rc 744 Operator Manual