Refrigeration Units - Delfield

Part Number 9291505 10/16

Versa Drawer™Refrigeration Units

Original InstructionsService ManualEnglish

Safety Notices

nWarningRead this manual thoroughly before operating, installing or performing maintenance on the equipment. Failure to follow instructions in this manual can cause property damage, injury or death.

DANGERDo not install or operate equipment that has been misused, abused, neglected, damaged, or altered/modified from that of original manufactured specifications.

DANGERKeep power cord AWAY from HEATED surfaces. DO NOT immerse power cord or plug in water. DO NOT let power cord hang over edge of table or counter.

DANGERAll utility connections and fixtures must be maintained in accordance with Local and national codes.

DANGERDo not lift the condensing unit by the refrigerant tubing or other components. These features will not support the condensing unit weight. Injury and unit damage may occur!

nWarningAuthorized Service Representatives are obligated to follow industry standard safety procedures, including, but not limited to, local/national regulations for disconnection / lock out / tag out procedures for all utilities including electric, gas, water and steam.

nWarningDo not store or use gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance. Never use flammable oil soaked cloths or combustible cleaning solutions, for cleaning.

nWarningThis product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Operation, installation, and servicing of this product could expose you to airborne particles of glasswool or ceramic fibers, crystalline silica, and/or carbon monoxide. Inhalation of airborne particles of glasswool or ceramic fibers is known to the State of California to cause cancer. Inhalation of carbon monoxide is known to the State of California to cause birth defects or other reproductive harm.

nWarningDo not use electrical appliances or accessories other than those supplied by the manufacturer.

nWarningUse caution when handling metal surface edges of all equipment.

nWarningThis appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision concerning use of the appliance by a person responsible for their safety. Do not allow children to play with this appliance.

nWarningDO NOT touch refrigeration lines inside units; some may exceed temperatures of 200°F (93.3°C).

,CautionWhen adding any item verify the location of the refrigeration lines on wrapped rail units. A refrigeration leak in a rail may be irreparable or extremely difficult and costly to repair.

NoteProper installation, care and maintenance are essential for maximum performance and trouble-free operation of your equipment. Visit our website www.mtwkitchencare.com for manual updates, translations, or contact information for service agents in your area.

Table of Contents

Part Number 9291505 10/16 3

Section 1General Information

Model Numbers .................................................................................................................. 5Serial Number Location ..................................................................................................... 5Warranty Information ........................................................................................................ 5Regulatory Certifications .................................................................................................. 5

Section 2Installation

Location .............................................................................................................................. 7Weight of Equipment ......................................................................................................... 8Clearance Requirements .................................................................................................... 8Dimensions ......................................................................................................................... 8Electrical Service ................................................................................................................ 9

Voltage .......................................................................................................................................................9Rated Amperages, Horsepower, Voltage & Power Cord Chart ...............................................9

Drain Connections ............................................................................................................10Refrigeration ....................................................................................................................10Casters Or Legs .................................................................................................................10

Leg Leveling .......................................................................................................................................... 10Leg Removal And Replacement ..................................................................................................... 10Caster Removal And Replacement................................................................................................ 11

Section 3Operation

General ..............................................................................................................................13Refrigeration System .......................................................................................................14Control Panel ....................................................................................................................14

Section 4Maintenance

Cleaning and Sanitizing Procedures ...............................................................................17General .................................................................................................................................................... 17Interior Cleaning .................................................................................................................................. 18Exterior Cleaning ................................................................................................................................. 18Casters ..................................................................................................................................................... 18Drawer Maintenance .......................................................................................................................... 19Drain ......................................................................................................................................................... 19Cleaning the Condenser Coil .......................................................................................................... 19Field Installation .................................................................................................................................. 19

Section 5Controls

Changing Drawer Modes .................................................................................................21Manual Defrost .................................................................................................................21Program Menu ..................................................................................................................22Set Points ..........................................................................................................................22Configuration ...................................................................................................................22Diagnostics .......................................................................................................................23Time and Date ...................................................................................................................23Software Versions ............................................................................................................23

4 Part Number 9291505 10/16

Table of Contents (continued)

Section 6Troubleshooting

Alarm Code Chart .............................................................................................................25Sequence Of Operation ...................................................................................................26

Freezer ..................................................................................................................................................... 26Refrigerator ......................................................................................................................26

Chill ........................................................................................................................................................... 26Thaw ..................................................................................................................................26

Defrost ..................................................................................................................................................... 26Troubleshooting Chart ....................................................................................................27Component Troubleshooting ..........................................................................................30Defaults and Ranges ........................................................................................................32

Section 7Component Removal And Replacement

Front Louvered Panel .......................................................................................................33Louvered Access End Panel .............................................................................................33Rear Panel .........................................................................................................................33Drawer Assembly .............................................................................................................34Return Air Baffle ...............................................................................................................35Evaporator Fans ...............................................................................................................35Drawer Switch ...................................................................................................................36Evaporator Coil Assembly Cover .....................................................................................36Evaporator Coil Assembly ...............................................................................................37Probes Defrost ..................................................................................................................37Probes Cabinet .................................................................................................................38Expansion Valve ...............................................................................................................38Condenser Fan Blade .......................................................................................................39Condenser Fan Motor.......................................................................................................39Condenser Coil .................................................................................................................40Compressor .......................................................................................................................40Accumulator/Receiver ......................................................................................................41Filter Dryer ........................................................................................................................41Solenoid Valves ................................................................................................................41Pressure Transducer .........................................................................................................42Display Control Board - From the Rear of the Unit ..............................................................................................42Display Control Board - From the Front of the Unit .............................................................................................43Electric Input/Output (I/O) Control Board ......................................................................43

Section 8Diagrams

Refrigeration Schematic ..................................................................................................45Versa Drawer Electric Input/Output (I/O) Control Board Connector Map ...................46Versa Drawer 4-Drawer Wiring Diagram (1 of 2) ............................................................47Versa Drawer 4-Drawer Wiring Diagram (2 of 2) ............................................................48Versa Drawer 2-Drawer Wiring Diagram (1 of 2) ............................................................49Versa Drawer 2-Drawer Wiring Diagram (2 of 2) ............................................................50

Part Number 9291505 10/16 5

Model NumbersNOTE: This manual covers standard units only. If you have a custom unit, consult the technical service department.

Model Model DescriptionF17VD84 115V/60Hz Component Crafted

F17VD84-CE 230-240V/50Hz Component CraftedF18VD50 115V/60Hz Component Crafted

F18VD50-CE 230-240V/50Hz Component CraftedF18VD82 115V/60Hz Component Crafted

F18VD82-CE 230-240V/50Hz Component CraftedF2984VDR 115V/60Hz Freestanding

F2984VDR-CE 230-240V/50Hz FreestandingF2984VDL 115V/60Hz Freestanding

F2984VDL-CE 230-240V/50Hz Freestanding18650VDR 115V/60Hz Freestanding

18650VDR-CE 230-240V/50Hz Freestanding18650VDL 115V/60Hz Freestanding

18650VDL-CE 230-240V/50Hz Freestanding18682VDR 115V/60Hz Freestanding

18682VDR-CE 230-240V/50Hz Freestanding18682VDL 115V/60Hz Freestanding

18682VDL-CE 230-240V/50Hz Freestanding

Serial Number LocationThe serial number is located on the data plate mounted inside of Drawer 1.

Always have the serial number of your unit available when calling for parts or service.

Serial Number Location

Warranty Information• Register your product for warranty,

• Verify warranty information,

• View and download a copy of your warranty,

@ www.delfield.com/warranty

Regulatory Certifications115 Volt models are certified by:

• National Sanitation Foundation (NSF)

• Underwriters Laboratories (UL)

• Underwriters Laboratories of Canada (CUL)

230-240 Volt models are certified by:

• National Sanitation Foundation (NSF)

• Technical Inspection Association

• European Conformity

Section 1General Information

6 Part Number 9291505 10/16

General Information Section 1

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Part Number 9291505 10/16 7

DANGERInstallation must comply with all applicable fire and health codes in your jurisdiction.

DANGERUse appropriate safety equipment during installation and servicing

nWarningRemove all removable panels before lifting and installing.

nWarningDo not damage the refrigeration circuit when installing, maintaining or servicing the unit.

Location

nWarningThis equipment must be positioned so that the plug is accessible unless other means for disconnection from the power supply (e.g., circuit breaker or disconnect switch) is provided.

nWarningAdequate means must be provided to limit the movement of this appliance without depending on or transmitting stress to the electrical conduit or gas lines.

nWarningTo avoid instability the installation area must be capable of supporting the combined weight of the equipment and product. Additionally the equipment must be level side to side and front to back.

nWarningThis equipment is intended for indoor use only. Do not install or operate this equipment in outdoor areas.

,CautionDo not position the air intake vent near steam or heat exhaust of another appliance. Direct exposure to excessive amounts of steam in machine compartment will result in control board failure.

The location selected for the equipment must meet the following criteria. If any of these criteria are not met, select another location.

• Units are intended for indoor use only.

• The location MUST be level, stable and capable of supporting the weight of the equipment.

• The location MUST be free from and clear of combustible materials.

• Equipment MUST be level both front to back and side to side.

• Position the equipment so it will not tip or slide.

• Front casters MUST be locked once positioned.

• Recommended air temperature is 41° - 86°F (5° - 30°C).

• Proper air supply for ventilation is REQUIRED AND CRITICAL for safe and efficient operation. Refer to Clearance Requirements chart on page 8.

• Do not obstruct the flow of ventilation air. Make sure the air vents of the equipment are not blocked.

• Do not install the equipment directly over a drain. Steam rising up out of the drain will adversely affect operation, air circulation, and damage electrical / electronic components.

Section 2Installation

8 Part Number 9291505 10/16

Installation Section 2

Weight of Equipment

Model Ship WeightF17VD84 520lbs (236kg)

F17VD84-CE 520lbs (236kg)F18VD50 520lbs (236kg)

F18VD50-CE 520lbs (236kg)F18VD82 720lbs (327kg)

F18VD82-CE 720lbs (327kg)F2984VDR 520lbs (236kg)

F2984VDR-CE 520lbs (236kg)F2984VDL 520lbs (236kg)

F2984VDL-CE 520lbs (236kg)18650VDR 520lbs (236kg)

18650VDR-CE 520lbs (236kg)18650VDL 520lbs (236kg)

18650VDL-CE 520lbs (236kg)18682VDR 720lbs (327kg)

18682VDR-CE 720lbs (327kg)18682VDL 720lbs (327kg)

18682VDL-CE 720lbs (327kg)

Clearance Requirements

DANGERMinimum clearance requirements are the same for noncombustible locations as for combustible locations. The flooring under the appliance must be made of a noncombustible material.

DANGERRisk of fire/shock. All minimum clearances must be maintained. Do not obstruct vents or openings.

Front Louvers Side Louvers

24”(60cm) 24”(60cm)

• Keep the vents clean and free of obstruction.

• The factory installed legs or casters must be used and not removed.

DimensionsEach 32” (81cm) drawer is heavy duty full extension with (2) 12” x 20” (31cm x 51cm) pan capacity.

Model L D H # of Drawers

F17VD8484"

(213cm)31.5"

(80cm)36"

(91cm)2

F17VD84-CE84"

(213cm)31.5"

(80cm)36"

(91cm)2

F18VD5050"

127.0cm31.5"

(80cm)36"

(91cm)2

F18VD50-CE50"

127.0cm31.5"

(80cm)36"

(91cm)2

F18VD8282"

(208cm)31.5"

(80cm)36"

(91cm)4

F18VD82-CE82"

(208cm)31.5"

(80cm)36"

(91cm)4

F2984VDR84"

(213cm)31.5"

(80cm)26"

(66cm)2

F2984VDR-CE84"

(213cm)31.5"

(80cm)26"

(66cm)2

F2984VDL84"

(213cm)31.5"

(80cm)26"

(66cm)2

F2984VDL-CE84"

(213cm)31.5"

(80cm)26"

(66cm)2

18650VDR50"

(127cm)31.5"

(80cm)34"

(86cm)2

18650VDR-CE50"

(127cm)31.5"

(80cm)34"

(86cm)2

18650VDL50"

(127cm)31.5"

(80cm)34"

(86cm)2

18650VDL-CE50"

(127cm)31.5"

(80cm)34"

(86cm)2

18682VDR82"

(208cm)31.5"

(80cm)34"

(86cm)4

18682VDR-CE82"

(208cm)31.5"

(80cm)34"

(86cm)4

18682VDL82"

(208cm)31.5"

(80cm)34"

(86cm)4

18682VDL-CE82"

(208cm)31.5"

(80cm)34"

(86cm)4

Part Number 9291505 10/16 9

Section 2 Installation

Electrical Service

DANGERCheck all wiring connections, including factory terminals, before operation. Connections can become loose during shipment and installation.

nWarningThis appliance must be grounded and all field wiring must conform to all applicable local and national codes. Refer to rating plate for proper voltage. It is the responsibility of the end user to provide the disconnect means to satisfy the authority having jurisdiction.

VOLTAGEAll electrical work, including wire routing and grounding, must conform to local, state and national electrical codes.

The following precautions must be observed:

• The equipment must be grounded.

• A separate fuse/circuit breaker must be provided for each unit.

• A qualified electrician must determine proper wire size dependent upon location, materials used and length of run (minimum circuit ampacity can be used to help select the wire size).

• The maximum allowable voltage variation is ±10% of the rated voltage at equipment start-up (when the electrical load is highest).

• Check all green ground screws, cables and wire connections to verify they are tight before start-up.

RATED AMPERAGES, HORSEPOWER, VOLTAGE & POWER CORD CHARTA 7’ (2.1 m) long grounded supply cord with three-pronged plug is provided with the standard units. Simply plug into a three-pronged wall outlet for proper grounding of the unit to begin operation.

When disconnecting the unit from the power source, do not pull on the cord. Firmly grip the plug and remove from outlet.

Model Amps HP Volts/Hertz/Phase PlugF17VD84 6.0 1/3 115/60/1 5-15P

F17VD84-CE 3.6 1/3 230-240/50/1 BS1363F18VD50 6.0 1/3 115/60/1 5-15P

F18VD50-CE 3.6 1/3 230-240/50/1 BS1363F18VD82 12.0 (2) 1/3 115/60/1 5-15P

F18VD82-CE 7.2 (2) 1/3 230-240/50/1 BS1363F2984VDR 6.0 1/3 115/60/1 5-15P

F2984VDR-CE 3.6 1/3 230-240/50/1 BS1363F2984VDL 6.0 1/3 115/60/1 5-15P

F2984VDL-CE 3.6 1/3 230-240/50/1 BS136318650VDR 6.0 1/3 115/60/1 5-15P

18650VDR-CE 3.6 1/3 230-240/50/1 BS136318650VDL 6.0 1/3 115/60/1 5-15P

18650VDL-CE 3.6 1/3 230-240/50/1 BS136318682VDR 12.0 (2) 1/3 115/60/1 5-15P

18682VDR-CE 7.2 (2) 1/3 230-240/50/1 BS136318682VDL 12.0 (2) 1/3 115/60/1 5-15P

18682VDL-CE 7.2 (2) 1/3 230-240/50/1 BS1363

10 Part Number 9291505 10/16


Drain Connections

nWarningIf a refrigerated base does not have a condensate evaporator supplied, you must connect the condensate line to a suitable drain. Otherwise, water will collect on the floor, causing a potentially hazardous situation.

nWarningMoisture collecting from improper drainage can create a slippery surface on the floor and a hazard to employees. It is the owner’s responsibility to provide a container or outlet for drainage.

All models are standard with a condensate evaporator pan.

RefrigerationThe refrigeration system uses HFC-404A refrigerant.

If your freezer seems to vibrate excessively when the compressor is running, loosen (but do not remove) the bolts on the compressor. Semi hermetic models should be loosened before operating.

Model Compressor Position Ref. Charge

F17VD84 Left 30 oz (850.5g)F17VD84-CE Left 30 oz (850.5g)

F18VD50 Left 30 oz (850.5g)F18VD50-CE Left 30 oz (850.5g)

F18VD82 Left (2) 30 oz (850.5g)F18VD82-CE Left (2) 30 oz (850.5g)

F2984VDR Right 30 oz (850.5g)F2984VDR-CE Right 30 oz (850.5g)

F2984VDL Left 30 oz (850.5g)F2984VDL-CE Left 30 oz (850.5g)

18650VDR Right 30 oz (850.5g)18650VDR-CE Right 30 oz (850.5g)

18650VDL Left 30 oz (850.5g)18650VDL-CE Left 30 oz (850.5g)

18682VDR Right (2) 30 oz (850.5g)18682VDR-CE Right (2) 30 oz (850.5g)

18682VDL Left (2) 30 oz (850.5g)18682VDL-CE Left (2) 30 oz (850.5g)

Casters Or Legs

DANGERLegs or casters must be installed and the legs or casters must be screwed in completely to prevent bending. When casters are installed the mass of this unit will allow it to move uncontrolled on an inclined surface. These units must be tethered/secured to comply with all applicable codes.

nWarningUse a jack to lift the refrigeration unit off the ground just far enough to remove the leg/caster. Place blocking underneath the unit. Do not work underneath a raised unit without proper blocking. Do not lift the unit more than necessary to remove the leg/caster. Lifting the unit too far can make the unit unstable.

LEG LEVELINGAll four 6” (15cm) legs are adjustable. Adjust each leg until the unit is stable and level left to right. If necessary adjusting the front legs slightly higher than the rear by about 1/8” (3mm) will help the door remain closed.

LEG REMOVAL AND REPLACEMENT1. Place a jack underneath the refrigeration unit as close

as possible to the leg. Lift the unit just high enough to remove the leg from underneath the refrigeration unit. Place blocking underneath the unit to prevent the unit from falling during removal of the leg.

2. Remove four screws from the upper portion of the leg.

3. Remove the leg from the refrigeration unit.

4. Reverse the above steps to install a replacement leg.

Screws

Leg Replacement

Part Number 9291505 10/16 11

Section 2 Installation

CASTER REMOVAL AND REPLACEMENT

nWarningThe unit must be installed in a stable condition with the front wheels locked. Locking the front casters after installation is the owner’s and operator’s responsibility.

,CautionAfter installing casters, the unit must stand upright for twenty-four (24) hours before being powered up to assure oil return to the compressor sump.

1. Place a jack underneath the refrigeration unit as close as possible to the caster. Lift the unit up just high enough to remove the caster from underneath the refrigeration unit. Place blocking underneath the unit to prevent the unit from falling during removal of the caster.

2. Remove four screws from the upper portion of the caster.

3. Remove the caster from the refrigeration unit.

4. Reverse the above steps to install a replacement caster.

Screws

Caster Replacement

12 Part Number 9291505 10/16



Part Number 9291505 10/16 13

DANGERThe on-site supervisor is responsible for ensuring that operators are made aware of the inherent dangers of operating this equipment.

DANGERDo not operate any appliance with a damaged cord or plug. All repairs must be performed by a qualified service company.

DANGERNever stand on the unit or in its drawers! They are not designed to hold the weight of an adult, and may collapse or tip if misused in this manner.

nWarningDo not contact moving parts.

nWarningAll covers and access panels must be in place and properly secured, before operating this equipment.

nWarningDo not use electrical appliances inside the food storage compartment of this appliance.

nWarningThe operator of this equipment is solely responsible for ensuring safe holding temperature levels for all food items. Failure to do so could result in unsafe food products for customers.

nWarningDamp or wet hands may stick to cold surfaces.

,CautionDo not block the supply and return air grills or the air space around the air grills. Keep plastic wrappings, paper, labels, etc. from being airborne and lodging in the grills. Failure to keep the air grills clear will result in unsatisfactory operation of the system.

,CautionDo not throw items into the storage area. Failure to heed this recommendation could result in damage to the interior of the cabinet or to the blower coil.

GeneralDo not pack drawer so full that air cannot circulate. Load product level with top of pans and keep all food covered.

Each drawer operates independently in one of four modes at any time.

Refrigerator Mode

The drawer operates at a set point of 37°F (3°C), maintaining a range between 34°F (1°C) and 40°F (4°C).

Freezer Mode

The drawer operates at a set point of -3°F (-19°C), maintaining a range between -6°F (-21°C) and 0°F (-17°C).

Thaw Cabinet Mode

The drawer maintains temperature between 36°F (2°C) and 41°F (5°C) for a minimum of 4 hours or longer if required. Once the thaw cycle is complete, the drawer mode is automatically changed to refrigerator mode.

Convenience Chiller Mode

The drawer operates as a chiller, maintaining the convenience chiller set point of 23˚F (-5˚C) for four hours. Once the convenience chiller cycle is complete, the drawer mode is changed to refrigerator mode.

Section 3Operation

14 Part Number 9291505 10/16

Operation Section 3

Refrigeration SystemIn a 2-drawer system there is a single compressor. In a 4-drawer system there are two compressors; one operating drawers 1 and 2 and one operating drawers 3 and 4.

Temperature sensors are located in each drawer. The drawer temperatures are displayed on the control panel.

An automatic defrost occurs every six hours in refrigerator and freezer mode.

Chill Time

• These times are based on chilling at a cabinet temperature of 5˚F(-15˚C) and 10 pounds(4.5kg) of product per drawer.

• The times are based on the duration to go from 140˚F(60˚C) to 40˚F(4˚C).

• The maximum limit of product to be chilled is no more than 10 pounds(4.5kg), not including pans.

• Product should be covered and no more than 2”(5cm) deep in the pan.

Product Chill TimeGreen Beans 2 hour 49 minutes

Mash Potatoes 3 hours 21 minutesScrambled Eggs 1 hour 53 minutes

Soup (Vegetable) 2 hour 58 Spaghetti with Meat sauce 2 hours 32 minutes

Control PanelThe control panel provides information indicating the current mode of each individual drawer. In addition, the actual temperature of the drawer is displayed.

All operating functions are accessible on the Versa Drawer control panel. Operators can select the drawer modes or activate the manual defrost. Access to all diagnostic functions require a qualified service technician.

2-Drawer Interface Control

4-Drawer Interface Control

Control Function

21

43 Buttons are located next to the drawer display

on the Control Panel. The drawer select buttons select the drawer to be configured.

These arrows are used to change a drawer to operate in a desired mode, refrigerate, freezer,

thaw or chill.Used to back up to the previous step.

The i button is used to initiate the manual defrost mode.

Part Number 9291505 10/16 15

Section 3 Operation

Setting The Drawer Mode

1. Press the button # next to the drawer display to be changed.

NOTE: Current drawer mode text size will decrease.

2. Press the up or down arrow to select between refrigerate, freeze, chill or thaw until desired mode is reached.

3. Press the drawer display # button again to lock the desired mode setting.

NOTE: Text size will return to original size.

Activating Manual Defrost

NOTE: These steps must be performed within 1 second.

1. Press the desired drawer display # button.

2. Immediately press the button.

Setting the Clock

1. Press the button until “Program Menu” appears.

2. Press the down arrow until brackets are around “Time & Date”, then press .

3. Press right and left arrows to get to parameter to be adjusted.

NOTE: The caret symbol [^] under the text indicates the parameter to be adjusted.

4. Press the up or down arrows to adjust parameter.

5. Once correct time and date are set press the back or left button twice to return to the main display screen. If no action is taken for 30 seconds the control will automatically return to main display screen.

Fahrenheit to Celsius

1. Press the button until “Service Menu” appears.

2. Press the down arrow until brackets are around “Configuration”, then press .

3. Press the down arrow to “System” and press .

4. In this menu will be “Metric”, change to Yes.

5. Press the back or left arrow until back to main menu.

16 Part Number 9291505 10/16

Operation Section 3


Part Number 9291505 10/16 17

DANGERIt is the responsibility of the equipment owner to perform a Personal Protective Equipment Hazard Assessment to ensure adequate protection during maintenance procedures.

DANGERFailure to disconnect the power at the main power supply disconnect could result in serious injury or death. The power switch DOES NOT disconnect all incoming power.

DANGERDisconnect electric power at the main power disconnect for all equipment being serviced. Observe correct polarity of incoming line voltage. Incorrect polarity can lead to erratic operation.

nWarningNever use sharp objects or tools to remove ice or frost. Do not use mechanical devices or other means to accelerate the defrosting process.

Cleaning and Sanitizing Procedures

,CautionMaintenance and servicing work other than cleaning as described in this manual must be done by an authorized service personnel.

GENERAL

nWarningWhen using cleaning fluids or chemicals, rubber gloves and eye protection (and/or face shield) must be worn.

You are responsible for maintaining the equipment in accordance with the instructions in this manual. Maintenance procedures are not covered by the warranty.

Section 4Maintenance

Maintenance Daily Weekly Monthly After Prolonged Shutdown At Start-Up

Interior X X X

Gasket X X X

Exterior X X X

Drain X X X

Drawers X X X

Condenser Coil X X X

Casters X X X

18 Part Number 9291505 10/16

Maintenance Section 4

INTERIOR CLEANING

nWarningWhen cleaning interior and exterior of unit, care should be taken to avoid the front power switch and the rear power cord. Keep water and/or cleaning solutions away from these parts.

nWarningNever use a high-pressure water jet for cleaning or hose down or flood interior or exterior of units with water. Do not use power cleaning equipment, steel wool, scrapers or wire brushes on stainless steel or painted surfaces.

The interior can be cleaned using soap and warm water. If this isn’t sufficient, try ammonia and water or a nonabrasive liquid cleaner.

Preventing Blower Coil Corrosion

To help prevent corrosion of the blower coil, store all acidic items, such as pickles and tomatoes, in seal-able containers. Immediately wipe up all spills.

EXTERIOR CLEANING

,CautionNever use an acid based cleaning solution on exterior panels! Many food products have an acidic content, which can deteriorate the finish. Be sure to clean the stainless steel surfaces of ALL food products.

Clean the area around the unit as often as necessary to maintain cleanliness and efficient operation.

Wipe exterior surfaces with a damp cloth rinsed in water to remove dust and dirt from the outside of the unit. Always rub with the “grain” of the stainless steel to avoid marring the finish. If a greasy residue persists, use a damp cloth rinsed in a mild dish soap and water solution. Wipe dry with a clean, soft cloth.

Never use steel wool or abrasive pads for cleaning. Never use chlorinated, citrus based or abrasive cleaners.

Stainless steel exterior panels have a clear coating that is stain resistant and easy to clean. Products containing abrasives will damage the coating and scratch the panels. Daily cleaning may be followed by an application of stainless steel cleaner which will eliminate water spotting and fingerprints. Early signs of stainless steel breakdown are small pits and cracks. If this has begun, clean thoroughly and start to apply stainless steel cleaners in attempt to restore the steel.

Gasket Cleaning

Gaskets require daily cleaning to prevent mold and mildew build up and also to keep the elasticity of the gasket. Gasket cleaning can be done with the use of warm soapy water. Avoid full strength cleaning products on gaskets as this can cause them to become brittle and prevent proper seals. Never use sharp tools or knives to scrape or clean the gasket, which could possibly tear the gasket and rip the bellows.

Drawer gaskets are magnetic and mount to the drawer, snapping in place and are removable without tools.

CASTERSWipe casters with a damp cloth monthly to prevent corrosion.

Part Number 9291505 10/16 19

Section 4 Maintenance

DRAWER MAINTENANCEDrawer Assembly Cleaning

The drawer assembly is designed to be cleaned easily. Both drawer and tracks are removable without tools. The drawer tracks are dishwasher safe or can be cleaned in a sink with detergents and a soft bristle brush. Drawers and tracks should be cleaned on a weekly basis.

Remove Drawers

Pull the drawer box out until it stops. Lift up on the drawer front and pull the drawer box completely out. Using a soft bristle brush, clean the track on the bottom of the drawer box. When finished, it should be wiped clean of all food and debris.

Tracks

The drawer box assembly must be removed. Pull the drawer tracks out until they hit a stop. Locate blue safety clips towards the back of each drawer track. Blue safety clips have a tab on the top. Push the tab back until it clicks. Lift up and pull the drawer tracks all the way out of the drawer cage. The drawer tracks are dishwasher safe or can be cleaned in a sink with detergents and a soft bristle brush. Drawers and tracks should be cleaned on a weekly basis. Using a soft bristle brush, wash the track making sure each roller is thoroughly cleaned. The drawer cage should be cleaned with a soft bristle brush, removing any food and debris gathered on the bottom ledge. Once it’s cleaned thoroughly with a soft bristle brush, wipe remaining debris clean with a soft towel.

Tab on top of blue safety clip

Reassembly

Push the drawer tracks into the drawer cage. The blue safety clip must remain pushed towards the back. Lift up and slide the drawer track all the way into the drawer cage. The blue safety clip will lock in place automatically. Once all tracks are replaced, insert the drawer box. Rest the drawer box bottom track on the front track roller. Then push the drawer back in place SLOWLY. When the drawer box is about half way in you will hit a STOP. You must lift the front of the drawer up approximately ½” (1.3cm) to continue inward. Clean tracks as often as possible. The cleaner the tracks are the better they will operate.

DRAINEach unit has a drain located inside the unit that removes the condensation from the evaporator coil and routes it to an external condensate evaporator pan. Each drain can become loose or disconnected during normal use. If you notice water accumulation on the inside of the unit, be sure the drain tube is connected to the evaporator drain pan. If water is collecting underneath the unit, make sure the end of the drain tube is in the condensate evaporator. The leveling of the unit is important as the units are designed to drain properly when level. Be sure all drain lines are free of obstructions.

CLEANING THE CONDENSER COILIn order to maintain proper refrigeration performance, the condenser fins must be cleaned of dust, dirt and grease regularly. It is recommended that this be done monthly. If conditions are such that the condenser is totally blocked in a month, the frequency of cleaning should be increased. Clean the condenser with a vacuum cleaner or stiff brush. If extremely dirty, a commercially available condenser cleaner may be required.

Failure to maintain a clean condenser coil can initially cause high temperatures and excessive run times. Continuous operation with a dirty or clogged condenser coil can result in compressor failure. Neglecting the condenser coil cleaning procedures will void any warranties associated with the compressor and cost to replace the compressor.

FIELD INSTALLATIONOver shelves and other items mounted to the top of the counters should never be installed in the field due to the potential damage to the refrigeration system.

20 Part Number 9291505 10/16

Maintenance Section 4


Part Number 9291505 10/16 21

The control console contains the data display and control buttons (Figure 1 & Figure 2) needed to operate the drawers. The menus can be accessed by pressing and holding the (Enter) button for approximately 5 seconds. The various screens used to monitor unit operation and to change settings will time out after 30 seconds. The exception is the diagnostics screen which does not time out.

1 Drawer

2 Drawer

Drawer

Drawer

3

4

LEFT

(BACK)

DOWN

UP ENTER

RIGHT

Figure 1. 4-Drawer Console Display

LEFT

(BACK)

DOWN

UP ENTER

RIGHT

Figure 2. 2-Drawer Console Display

Changing Drawer ModesAt anytime while using the control, go back to the previous screen by pressing the LEFT arrow.

1. Press the desired drawer tab on the display.

2. Press the UP or DOWN arrows to the desired mode (Refrigerate, Freeze, Chill, or Thaw) (Figure 3).

NOTE: The desired mode will display with parenthesis when selected.

3. Press the drawer tab again to lock the desired mode setting.

Figure 3. Drawer Mode Display (2-Drawer Display shown)

nWarningOnly trained and authorized service personnel or store manager should access the service screens. If changes to these settings are made incorrectly they will cause the unit to malfunction.

Manual DefrostBoth buttons must be pressed within one second to manually set defrost.

To manually set a drawer to defrost, press the desired drawer tab (Figure 3) and then very quickly press (Enter). To turn off manual defrost, press the desired drawer tab and very quickly press (Enter).

Section 5Controls

22 Part Number 9291505 10/16

Controls Section 5

Program MenuAt any time while using the control, go back to the previous screen by pressing the LEFT arrow.

The Program Menus can be accessed by pressing and holding (Enter) for five seconds.

Figure 4. Program Menu (2-Drawer Display Shown)

1. Select the desired function by pressing the UP or DOWN arrows (Figure 4).

2. Press (Enter) to select the function.

Set PointsOnce in the Program Menu press the UP or DOWN arrows to Set Points and press (Enter) (Figure 5).

Figure 5. Set Points Menu (2-Drawer Display Shown)

1. Select a function from the Set Points menu by pressing the UP or DOWN arrows to the desired function and press (Enter). This selection will allow the temperature setting to be adjusted.

2. Press (Enter) to lock in the desired temperature setting.

ConfigurationOnce in the Program Menu press the UP or DOWN arrows to Configuration and press (Enter) (Figure 6).

Figure 6. Configuration Menu (2-Drawer Display Shown)

1. Select a function from the Configuration Menu by pressing the UP or DOWN arrows to the desired function and pressing (Enter) allowing the function to be adjusted or viewed.

• Mode: System temperature set points differential

• Defrost: Defrost times and set points

• Compressor: Compressor run times

• Condenser: Condenser temperatures and run times

• System: Drawer open timeout, data log interval, run frame heaters, metric, language, reload defaults

2. Press (Enter) to lock in an adjusted setting or press the LEFT arrow to go back.

Part Number 9291505 10/16 23

Section 5 Controls

DiagnosticsOnce in the Program Menu press the UP or DOWN arrows to Diagnostics and press (Enter) for diagnostics display (Figure 7).

Drawer

Drawer

3

4

Figure 7. Diagnostics Menu (4-Drawer Display Shown)

Drawer

Drawer

3

4

Drawer

Drawer

3

4

Drawer

Drawer

3

4

Figure 8. Drawer Status

The status of each drawer is detailed in a column below it’s location, #1, #2, #3 or #4.

• Mode, Box Temperature, Evaporator Temperature are listed at the top.

• If the hot gas solenoid is powered there will be a H in the Heat row under the corresponding drawer.

• If the cooling solenoid is powered there will be a C in the Cool row under the corresponding drawer.

• If a fan is powered there will a F in the Fans row under the corresponding drawer.

• If the frame heater is powered there will be a W in the Wire row under the corresponding drawer.

• If the drawer switch is open there will be an O in the Open Drawer row under the corresponding drawer.

Time and DateOnce in the Program Menu press the UP or DOWN arrows to Time & Date and press (Enter) allowing the time and date to display.

1. Adjust the time and date by pressing the RIGHT arrow to the desired digit location and the UP or DOWN arrow to the proper digit.

2. Press (Enter) to lock in the setting.

3. Repeat for each digit location on the screen.

4. When completed press (Enter) then the LEFT arrow to exit the Time and Date screen.

Software VersionsOnce in the Program Menu press the UP or DOWN arrows to SW Versions (Figure 9) and press (Enter) allowing the software versions to display.

Figure 9. Software Versions Display (2-Drawer Display Shown)

NOTE: The software versions in Figure 9 are shown as examples only and are not the actual software versions.

24 Part Number 9291505 10/16

Controls Section 5


Part Number 9291505 10/16 25

Alarm Code Chart

Alarm Meaning Action Alternate ActionThaw Finished Thaw cycle is complete and unit

is now in refrigeration mode.Press corresponding drawer number to clear audio and

screen.Chiller Finished Chiller cycle has completed and

unit is now in refrigeration mode.Press corresponding drawer number to clear audio and

screen.Drawer Open Drawer's been open for greater

than set time.Close drawer.

Drawer temperature Out of Range

Drawer temperature's been 10 deg F above or below setpoint

for more than 15 minutes.

Press corresponding drawer number to clear audio and

screen.

Close drawer.

Loss of power Power to unit was interrupted. Press i button to stop audio alarm. Screen will change to

display time power failed, time power was restored. Present

time. Press i button once more to return to main screen.

Drawer temperature probe(s) out of range

Temperature probe to drawer box or evaporator is damage or

temperature is out of range.

Press i button to suspend audio alarm for 24 hours, screen will clear once temperature drops

into range or probe is repaired.Condenser temperature probe(s)

out of rangeTemperature probe to condenser is damaged or temperature is out

of range.

Press i button to suspend audio alarm for 24 hours, screen will clear once temperature drops

into range or probe is repaired.Compressor pressure

transducer(s) out of rangePressure transducer damaged or pressure is higher than 150 psi.

Press i button to suspend audio alarm for 24 hours. If

unit is started in high ambient temperature alarm will clear on pulldown. If diagnostics

shows "open" for transducer, component must be repaired.

Condenser fan(s) failure Condenser fan has fail to pull down condenser outlet by 1 degree over two minutes. Condenser fan may not be

operating or condenser coil is dirty.

Alarm displays "Call Service" in diagnostics. Alarm will remain on screen until service work is

performed.

The screen will clear if power to the unit is disconnected and

reconnected. If alarm keeps reoccurring after power has been

removed service is required.

Compressor(s) Failure Compressor has failed to decrease suction pressure.

Alarm displays "Call Service" in diagnostics. Alarm will remain on screen until service work is

performed.

The screen will clear if power to the unit is disconnected and

reconnected. If alarm keeps reoccurring after power has been

removed service is required.

Section 6Troubleshooting

26 Part Number 9291505 10/16

Troubleshooting Section 6

Sequence Of Operation

FREEZER1. Thermostat calls for cooling.

2. 120 VAC power is sent to the solenoid from the I/O board.

3. Pressure rises to 20 psig energizing either terminal J25 or J26 on I/O sending power to the compressor.

4. Condensing fan powers on at 101°F/powers off at 96°F.

5. When the cabinet probe senses temperature set point the solenoid powers down.

6. Compressor runs into a pump down cycle until 13 psi is reached.

7. Compressor powers down.

Refrigerator1. Thermostat calls for cooling.

2. 120 VAC power is sent to the solenoid from the I/O board.

3. Pressure rises to 64 psig energizing either terminal J25 or J26 sending power to the compressor.

4. Condensing fan powers on at 101°F/powers off at 96°F.

5. When the cabinet probe senses temperature set point the solenoid powers down.

6. Compressor runs into a pump down cycle until 13 psi is reached.

7. Compressor powers down.

CHILL1. Evaporator fans power on and off based on cabinet

temp.

2. 120 VAC power is sent to refrigeration solenoid from I/O board.

3. Default temp for convenience chiller is 23°F.

4. Refrigeration solenoid is powered when box temp falls 3°F below default.

5. The box will maintain default temp for a 90 minute time limit.

6. A defrost cycle will be initiated.

7. At the end of the defrost cycle the box will go into a refrigeration cycle.

8. An alarm sound and the screen will display that the chill cycle is complete.

Thaw1. Evaporator fans power on and off based on cabinet

temp.

2. If the box temp rises 3°F above 41°F the refrigeration solenoid will activate.

3. If the box temp falls 3°F below 41°F the hot gas solenoid will activate.

4. The drawer maintains temperature for a minimum of 4 hours or longer depending on box temp.

5. If the hot gas solenoid has not been activated for a 30 minute period after the initial thaw time of 4 hours. The unit automatically changes to refrigeration mode, sounds an alarm, and displays Thaw Complete message on the screen.

DEFROST1. Evaporator fans are disabled.

2. 120 VAC power is sent to simultaneously to hot gas solenoid and compressor from the I/O board.

3. The solenoid is disabled when the evaporator coil probe senses 70°F or an on time of 15minutes.

4. Compress runs into pump down.

5. When defrost is complete there is a drip time of 5 minutes.

The display will again show temp 15 minutes after drip time is complete.

Part Number 9291505 10/16 27

Section 6 Troubleshooting

Troubleshooting ChartThe troubleshooting chart below provides common symptoms, causes and remedies. The chart cannot cover every problem that may occur. However, the most common problems, as shown in the table, can be used to troubleshoot many symptoms. The chart used in conjunction with the diagnostics screen provides good troubleshooting information.

Diagnostics

The diagnostics screen as described on page 23 provides an ongoing display of drawer data. The diagnostics screen does not time out but remains available for observation by a service technician.

Symptom Cause/Remedy Additional Instructions:

Unit does not power on. Make sure the unit is plugged into a proper power source. Electrical Service on page 9Test the outlet for the correct voltage. Electrical Service on page 9Inspect the electrical cord for damage. -Check for a blown fuse or tripped breaker. -

Unit has power but does not run.

Check for power at the junction box inside the compressor compartment.

-

Check for power coming out of the control board (12VDC) at the terminal for the display board.

Terminal J23 (120VAC) to J1 (12VDC) on display board

If no power is coming out of the control board, replace the control board.

Electric Input/Output (I/O) Control Board on page 43

Condensing unit does not run. Check control settings and make sure the control is calling for the refrigeration.

Diagnostics on page 23

Check for voltage (120VAC) to solenoid while spade terminals are connected.

I/O diagrams starting on page 47

Check voltage from the control board. Terminal J25 to compressor(120VAC)Terminal J33 to condensing fan (120VAC)

Compressor not running but condenser fans work or running.

Check control settings and make sure the control is calling for the fans to run.

Diagnostics on page 23

Check voltage from the control board. Terminal J23 (120VAC)Make certain there is ample air flow for the evaporator and condenser coils.

-

Clean the condenser coils. Cleaning the Condenser Coil on page 19

Test the compressor relays for overload. -Test the compressor for open or shorted windings. -

Evaporator fans do not run. Check control settings and make sure the control is calling for the fans to run.

Evaporator Fan Motor on page 30

Check for obstructions to the fan blade. Evaporator Fans on page 35Check to see if the door switch is open or is shorted out. Drawer Switch on page 30

Drawer Switch on page 36Check for voltage (12VDC) at the fan motors. Evaporator Fan Motor on page 30

Evaporator Fans on page 35Condenser fans do not run. Check control settings and make sure the control is calling for

the fans to run.Condenser Fan Motor on page 30

Check for obstructions to the fan blade. Condenser Fan Motor on page 39Check for voltage (12VDC) at the fan motors. Condenser Fan Motor on page 30

Condenser Fan Motor on page 39Check the temperature sensor at the condenser coil inlet/outlet to see if it is open or shorted.

Probes Defrost on page 32

28 Part Number 9291505 10/16



Unit is not reaching desired temperature.

Check to see that the unit is in the correct mode of operation. Defaults and Ranges on page 32Diagnostics on page 23

Check to see that the unit is set at the desired set point. Defaults and Ranges on page 32Set Points on page 22

Check the drawers and gaskets to ensure they seal properly. -Check amp draw to determine if the compressor is cycling or if the unit is continuously running.

Compressor on page 40

Check evaporator air flow. Evaporator Coil Assembly on page 37

Check for ice buildup on the evaporator coils. -Check to see if the box temperature sensor is open or shorted. Probe Cabinet on page 32

Unit is getting too cold. Check to see that the unit is in the correct mode of operation. Defaults and Ranges on page 32Diagnostics on page 23

Check to determine that the unit is set at the desired set point. Defaults and Ranges on page 32Set Points on page 22

Listen/check amp draw to determine if the compressor is cycling or if the unit is continuously running.

Compressor on page 40

Check to determine if the box temperature sensor is open or shorted.

Probe Cabinet on page 32

Unit is noisy. Check for loose or missing screws on the compressor compartment louvers.

Louvered Access End Panel on page 33

Inspect the compressor mounts. Compressor on page 40Check for loose or broken fan blades. Evaporator Fans on page 35

Condenser Fan Blade on page 39Check for ice buildup on the evaporator coil. Evaporator Coil Assembly on page

37Unit runs continuously. Clean the condenser coils. Cleaning the Condenser Coil on page

19Check the drawer gaskets. Drawer Gasket on page 34Check the evaporator fans. Evaporator Fans on page 35Check to determine if the box temperature sensor is open or shorted.


Check refrigerant charge. Refrigeration on page 10 for charge weight

Check the compressor. Compressor on page 40Unit short cycles. Check the drawer gaskets. Drawer Gasket on page 34

Check condenser fans. Condenser Fan Motor on page 30Condenser Fan Motor on page 39

Check refrigerant charge. Refrigeration on page 10 for charge weight

Check the compressor. Compressor on page 40Check to determine if the box temperature sensor is open or shorted.


Check TXV for superheat. Expansion Valve on page 38

Part Number 9291505 10/16 29



Evaporator coils are freezing up.

Clean the condenser coils. Cleaning the Condenser Coil on page 19

Check the drawer gaskets. Drawer Gasket on page 34Check refrigerant charge. Refrigeration on page 10 for

charge weightCheck to determine if the box temperature sensor is open or shorted.


Check the evaporator fans and air flow. Evaporator Fan Motor on page 30Evaporator Fans on page 35

Check to assure that the hot gas loop is more than 1 inch away from either end of the evaporator drain pan.

-

Check the TXV for superheat. Expansion Valve on page 38Water on floor outside the unit. Make sure the condensate wicks are not missing. -

Check the condensate drain pan. -Check the evaporator drain pan and drain lines. -

Water inside the unit. Verify proper condensate pan installation. -Verify proper condensate removal. -Check the evaporator drain pan and drain lines. -

Unit is showing “Drawer Open” on the display.

Close drawer. -Check drawer switch. Drawer Switch on page 30

Drawer Switch on page 36Check control. I/O Board on page 31

Electric Input/Output (I/O) Control Board on page 43

Unit is showing “Out of Temperature Range” on the display.

Check to determine if any drawers are open. -Check to determine that the unit is in the correct mode of operation.

Changing Drawer Modes on page 21

Check to determine that the unit is set at the desired set point. Defaults and Ranges on page 32Check to determine if the box temperature sensor is open or shorted.


The unit has power but the display is not lit.

Check voltage at the display plug on the control. Versa Drawer 2-Drawer Wiring Diagram (1 of 2) on page 49Terminal J23 (8VDC)

If there is voltage at the display plug on the control board, replace the display board.

I/O Board on page 31Display Control Board - From the Front of the Unit on page 43

If there is not voltage at the display plug on the control board, replace the control board.

I/O Board on page 31Electric Input/Output (I/O) Control Board on page 43

Unit alarm is sounding after losing power.

Press the i (Enter) button on the display once to make the alarm quit. This will then show on the display the time that the unit last had power and the time that the unit had power restored. Press the i (Enter) button again to show the main display screen.

Controls on page 21

Unit alarm displays "Call Service" in diagnostics, compressor is failing.

Check the unit pressures.Check the suction line pressure transducer. Pressure Transducer on page 30

Pressure Transducer on page 42Check for up-to-date software. Software Versions on page 23

30 Part Number 9291505 10/16


Component TroubleshootingEvaporator Fan Motor

When properly working it should have constant continuity at 12VDC.

1. Disconnect the evaporator motor leads at the motor; the evaporator housing will have to be disassembled.

2. There are two evaporator motors; they will need to be separated.

A. Check for continuity at the leads entering the motor.

B. If your meter shows OL the windings have failed and the motor will need to be replaced.

3. If your meter shows continuity check for DC voltage on the incoming power leads.

A. If no voltage is present check for power at the I/O board terminal J22.

B. Reference wiring schematic and board pin out. Drawer switch operation can also be checked at the leads coming into the I/O board.

C. If no voltage is present replace I/O board.Condenser Fan Motor

Condensing fan powers on at 101°F/powers off at 96°F.

1. Disconnect the condenser motor leads at I/O board. See board pin out and schematic.

A. Check for continuity at the leads entering the motor.

B. If your meter shows OL the windings have failed and the motor will need to be replaced.

C. If your meter shows continuity check for AC voltage on the incoming power leads.

D. With no voltage present at the incoming leads. Check for voltage at the I/O board terminal (condenser fan lead J32 and neutral) (condenser fan lead J33 and neutral).

Drawer Switch

1. Disconnect incoming power leads.

A. With the switch in the closed position check for continuity.

B. If no continuity is present replace switch.Solenoid Valve

1. With a “C” on the display for the drawer in question check for voltage at the solenoid.

A. If 120 VAC is present check for magnetism on the solenoid coil.

B. If none is present check the coil for continuity. If no voltage is present check for power at the I/O board.

Display Board

• There are two harnesses going to the display board, one for power and one for communications. The display board receives its power from the I/O board (8 VDC J23 on I/O board). If display board is blank check voltage at J23. If no power at J23 I/O could be bad. If there is power at board, disconnect harness and verify harness is OK. If there’s power to J1 on display board and screen is blank display board may need to be replaced. If the board displays communication error then there is an issue with the communication signal. Most the time this is either a fault with the connection to either board or the cable has a defect. Continuity should be checked in the cable and the cable disconnected and reattached before assuming that either board is bad. It is very uncommon for the board to be the issue. If the cable does appear to be OK, try a new display board first.

Pressure Transducer

1. Remove the harness from which ever transducer is in question, J11 or J34.

2. Check for 5 VDC between pins 1 and 3.

A. If there is not 5 VDC, the I/O board is not putting out the correct voltage.

B. If there is 5 VDC, check the pressure transducer.3. To verify that the pressure transducer is OK there

should be a voltage of between 0.5 and 4.5 VDC across pins 2 and 3 on either J11 or J34 (transducer in question).

Part Number 9291505 10/16 31


I/O Board

1. Is the cabinet temperature above the set point for current mode?

• If not, the unit and I/O board are operating normally.

2. If the cabinet temperature is higher than it should be, is it in defrost mode? A H will be on the screen below the corresponding drawer.

• If yes, wait for defrost to complete and enter cooling mode. Return to Step 1.

3. If the cabinet temperature is higher than it should be and not in defrost mode, perform the following:

A. Press and hold the center button for approximately 5 seconds until the Program Menu screen is visible.

B. Press the down button until Diagnostics is highlighted. Press the center button to enter it. Compressor/Condenser #1 supplies drawer #1/#2. Compressor/Condenser #2 supplies drawer #3/#4.

4. Is the compressor on? A C will be on the screen below the corresponding drawer number.

• If the compressor is off, check the system pressures on the diagnostic screen against the compressor on pressures in the table below. If the system pressures are higher and no power is being sent to the solenoid replace the I/O board.

Mode Set Temp

Compressor On Pressure

Compressor Off Pressure

Refrigerator 37°F 64 PSI 13 PSI

Freezer -3°F 21 PSI 13 PSI

Thaw 41°F 70 PSI 13 PSI

5. If the compressor is on, determine if there is voltage at the solenoid corresponding to the drawer.

• If there is voltage at the solenoid corresponding to the drawer with the compressor on continue on to step 6.

• If there is no voltage at the solenoid corresponding to the drawer with the compressor on continue on to step 7.

6. If there is voltage at the solenoid corresponding to the drawer with the compressor, determine if the solenoid is activating by testing for magnetism.

• If magnetism is present at the solenoid and no refrigerant is flowing through the valve, replace the solenoid and valve.

• If magnetism is not present at the solenoid, replace the solenoid.

7. If there is no voltage at the solenoid corresponding to the drawer with the compressor, check for continuity on the wiring harness.

• If continuity at the wiring harness is present, replace the solenoid.

• If there is no continuity at the wiring harness present, replace the wiring harness.

32 Part Number 9291505 10/16


Probes Defrost

1. Disconnect probe from I/O board and check for continuity.

2. Reference the chart regarding continuity of probes at a given temp.

3. If the continuity does not coincide with the chart replace probe.

Probe Cabinet

1. Disconnect probe from I/O board and check for continuity.

2. Reference the chart regarding continuity of probes at a given temp.

3. If the continuity does not coincide with the chart replace probe, see page 37.

Continuity Of Probes At A Given Temperature

Resistance kΩ Temperature (° F)

329.5 -58

247.7 -49

188.5 -40

144.1 -31

111.3 -22

86.43 -13

67.77 -4

53.41 5

42.47 14

33.9 23

27.28 32

22.05 41

17.96 50

14.69 59

12.09 68

10 77

8.313 86

Defaults and Ranges

Default Units Range

Setpoints

Refrigerate 37 Deg F 32 to 41

Freeze -3 Deg F -5 to 10

Thaw 41 Deg F 32 to 45

Chill 23 Deg F 5 to 23

Mode

Refrigerate Hysteresis

3 Deg F 1 to 5

Freeze Hysteresis 3 Deg F 1 to 5

Thaw Hysteresis 5 Deg F 3 to 7

Chill Hysteresis 3 Deg F 1 to 5

Thaw time 240 Minutes 180 to 360

Thaw hot gas time 30 Minutes 15 to 45

Chill Time 90 Minutes 90 to 240

Defrost

Setpoint Termination 80 Deg F 50 to 90

Duration 15 Minutes 0 to 30

Drip Time 2 Minutes 5-Jan

Maximum Intervals 360 Minutes 180 to 480

Minimum Intervals 90 Minutes 30 to 180

Defrost start temp. -25 Deg F -35 to -15

Compressor

Minimum Off Time 1 Minutes 1 to 5

Cut -In 20 PSIG 15 - 30

Cut-Out 5 PSIG 2 to 10

Condenser

On Temperature 101 Deg F 85 to 115

Off Temperature 96 Deg F 80 to 110

System

Drawer Open Timeout

5 Minutes 5 to 15

Data Log Interval 5 Minutes 1 to 15

Run Frame Heaters Yes Yes/No

Number of Drawers 2 2 or 4

Metric No Yes/No

Part Number 9291505 10/16 33

Lo Profile and 2-Drawer refrigeration units use one compressor, one accumulator, one receiver and four solenoids. In addition, one evaporator is used for each drawer along with support components. The 4-Drawer refrigeration unit uses two complete 2-Drawer units. Component removal and replacement is similar for both types.

Perform the following procedures to remove and replace parts. To eliminate mistakes when ordering parts, always provide the following information:

• Model Number

• Serial Number

Front Louvered PanelRemove the front louvered panel to access the condensing coil. The process is similar for all models.

1. Lift up on louver from bottom and pull away from unit (Figure 10).

2. Reverse the above step to install the front louvered panel.

Front louvered panel

Figure 10. Front Louvered Panel

Louvered Access End PanelRemove the end louvered panel to access the condensing unit. The removal process is similar for all models.

1. While supporting the louvered access end panel, remove mounting screws.

2. Lift louvered access end panel out and up to remove.

3. Reverse the above steps to install the louvered access end panel.

Rear PanelRemove the rear panel to access the temperature/defrost probes and evaporator fan power wires. The removal process is similar for all models.

1. While supporting the rear panel, remove 11 screws.

2. Remove the rear panel from the unit.

3. Reverse the above steps to install the rear panel.

Section 7Component Removal And Replacement

34 Part Number 9291505 10/16

Component Removal And Replacement Section 7

Drawer AssemblyDrawer Removal

1. Empty the drawer.

2. Pull and lift the drawer to remove it from the unit (Figure 11).

Drawer

Figure 11. Drawer Removal

Drawer Gasket

The drawer gasket is installed on the inner side of the drawer front and fitted into a slot (Figure 12).

1. Remove the drawer gasket by carefully pulling the drawer gasket out of the groove.

2. Reverse the above step to install the drawer gasket.

Drawer Front Assembly

1. Remove the drawer from the refrigeration unit (Figure 12).

2. Place the drawer on a solid surface with the drawer front assembly down.

3. Remove six screws securing the drawer front assembly to the drawer.

4. Reverse the above steps to install the drawer front assembly.

Drawerfront

Drawergasket

Screw

Figure 12. Drawer Front Assembly

Part Number 9291505 10/16 35

Section 7 Component Removal And Replacement

Return Air Baffle1. Remove screws from return air baffle (Figure 13).

2. Remove blue wires from drawer switch while supporting air baffle.

3. Reverse the above steps to install the return air baffle.

Return airbaffle

6 Screws

Figure 13. Return Air Baffle

Evaporator Fans 1. Remove drawer assembly.

Drawer

2. Remove air baffle plate from top of cabinet.

Return airbaffle

6 Screws

3. Disconnect the drawer switch and remove the air baffle.

4. Remove four screws holding evaporator shroud to gain access to evaporator fan.

5. Remove and install evaporator fan.

36 Part Number 9291505 10/16


Drawer Switch1. Remove drawer assembly.

Drawer

2. Lower air baffle.

Return airbaffle

6 Screws

3. Disconnect leads from drawer switch.

4. Press tabs on each side of drawer switch and push through the baffle.

Evaporator Coil Assembly CoverEvaporator coil assembly cover removal is similar for all models.

1. The evaporator coil assembly cover is mounted behind the drawer (Figure 14).

2. Reach inside the box and remove four screws from the front of the evaporator coil assembly cover.

Evaporator coil assembly cover

Evaporator coil assembly

Figure 14. Evaporator Coil Assembly Cover

3. Tag and disconnect the fan electrical connectors.

4. Remove the evaporator coil assembly cover from the box.

5. Reverse the above steps to install the evaporator coil assembly cover.

Part Number 9291505 10/16 37


Evaporator Coil Assembly1. Disconnect power from the refrigeration unit.

2. Remove the drawer as described above.

3. Remove the rear panel as described in COVERS AND PANELS.

4. Remove the evaporator coil assembly cover as described previously.

5. Follow the guidelines and/or government regulations for RECOVERY, PURGING/TESTING AND RECHARGING REFRIGERATION UNIT to recover the refrigerant from the refrigeration system.

ScrewEvaporator coil assembly

Figure 15. Evaporator Coil Assembly Removal

6. From the rear of the refrigeration unit, unsolder the refrigeration lines from the evaporator coil assembly.

7. Carefully remove the expansion valve thermocouple from evaporator line.

8. Remove the evaporator coil assembly from the unit (Figure 15).

9. Reverse the above steps to install a replacement or repaired evaporator coil assembly. Recharge the system as described in the guidelines and/or government regulations for RECOVERY, PURGING/TESTING AND RECHARGING REFRIGERATION UNIT.

Probes Defrost1. Remove drawer assembly.

2. Remove air baffle and disconnect drawer switch.

3. Remove evaporator cover.

4. The probe is located on the suction line entering the evaporator.

5. Using a screwdriver remove silicone allowing access to the cabinet.

6. Remove and install probe.

38 Part Number 9291505 10/16


Probes Cabinet1. Remove drawer assembly.

2. Remove air baffle and disconnect drawer switch.

3. Remove evaporator cover.

4. The probe is located above the evaporator on back wall.

5. Using a screwdriver remove silicone allowing access to the cabinet.

6. Remove and install probe.

Expansion Valve1. Disconnect power from the refrigeration unit.

2. Remove the evaporator coil assembly cover as described in COVERS AND PANELS.

3. Remove the expansion valve thermocouple from the evaporator line.

Screw

Evaporator coilassembly Expansion

valve (TXV)

Thermocouple

Figure 16. Expansion Valve and Thermocouple

4. Reach inside the drawer box and unsolder the refrigeration lines. Remove the expansion valve and thermocouple from the evaporator housing (Figure 16).

5. Reverse the above steps to install a replacement expansion valve.

Part Number 9291505 10/16 39


Condenser Fan Blade1. Disconnect power from the refrigeration unit.

2. Remove the louvered access end panel as described in COVERS AND PANELS.

Condenserfan blade

Nut

Figure 17. Condenser Fan Blade

3. While holding the condenser fan blade (Figure 17), remove the lock nut from the center of the condenser fan blade.

4. Reverse the above steps to install the condenser fan blade.

Condenser Fan Motor

DANGERDisconnect electric power at the main power disconnect for all equipment being serviced.

1. Disconnect power from the refrigeration unit.


3. Tag and disconnect the wiring harness at the condenser fan motor.

4. Remove the condenser fan blade as described above.

Condenserfan bracket

Condenserfan motor

Screw

Figure 18. Condenser Fan Motor

5. While supporting the condenser fan motor, remove three screws securing the condenser fan motor to the condenser fan bracket (Figure 18).

6. Reverse the above steps to install a replacement condenser fan motor.

40 Part Number 9291505 10/16


Condenser Coil1. Disconnect power from the refrigeration unit.

2. Remove the front louvered panel as described in COVERS AND PANELS.

NOTE: The two-drawer system uses a condenser coil mounted behind the front louvered panel. The four-drawer unit uses two condenser coils stacked behind the front louvered panel. The removal procedure is similar for all models.

3. Refer to all guidelines and/or government regulations for RECOVERY, PURGING/TESTING AND RECHARGING REFRIGERATION UNIT to recover the refrigerant from the refrigeration system.


5. Tag and remove the temperature sensor from the condenser coil.

6. Remove six screws securing the condenser coil inside the machine compartment (Figure 19).

7. Tag and disconnect the condenser fan motor.

8. Unsolder the refrigeration lines from the condenser coil and remove the condenser coil from the unit.

9. Remove four screws securing the condenser coil to the condenser cover and condenser fan bracket.

10. Reverse the above steps to install a replacement or repaired condenser coil.

Screw

Condensercoil

Condenserfan bracket

Condensercover

Figure 19. Condenser Fan Blade and Bracket

Compressor• Front compressor – Drawer 1&2

• Rear Compressor – Drawer 3&4



3. Refer to the guidelines and/or government regulations for RECOVERY, PURGING/TESTING AND RECHARGING REFRIGERATION UNIT to recover the refrigerant from the refrigeration system.

Filterdryer

Accumulator Compressor

Rubber mounts

Receiver

Figure 20. Refrigeration Compartment

4. Unsolder the refrigeration lines at the compressor (Figure 20).

5. Tag and disconnect the wiring harness at the compressor.

6. Remove four screws securing the compressor to the refrigeration unit.

7. Remove compressor and four isolation rubber mounts.

8. Reverse the above steps to install a replacement or repaired compressor.

Part Number 9291505 10/16 41


Accumulator/Receiver1. Disconnect power from the refrigeration unit.



4. Remove the insulation jacket from the accumulator (Figure 20).

5. Unsolder the refrigeration lines at the accumulator.

6. Reach underneath refrigeration unit and remove one screw securing the accumulator to the refrigeration unit.

7. Remove the accumulator from the unit.

8. Reverse the above steps to install a replacement accumulator.

Filter Dryer1. Disconnect power from the refrigeration unit.



4. Unsolder the refrigerant line at the filter dryer (Figure 20).

5. Remove the filter dryer from the refrigeration unit.

6. Reverse the above steps to install a replacement filter dryer.

Solenoid ValvesAll solenoid valves are identical. Remove as follows:



Solenoidvalves

Pressuretransducer

Figure 21. Solenoid Valves and Pressure Transducer

3. Tag and disconnect the wiring harness at the solenoid valve (Figure 21).

4. To check or remove the solenoid coil, remove the nut securing the solenoid coil on the solenoid valve. Remove the solenoid coil and wiring harness.

5. Unsolder the refrigeration lines at the solenoid valve.

6. Remove the solenoid valve from the refrigeration unit.

7. Reverse the above steps to install a replacement solenoid coil or replacement solenoid valve.

42 Part Number 9291505 10/16


Pressure Transducer1. Disconnect power from the refrigeration unit.


3. Tag and disconnect the wiring harness from the pressure transducer (Figure 21).

4. While holding pressure transducer mount, use pliers to remove the pressure transducer from the Schrader access valve.

5. Reverse the above steps to install a replacement pressure transducer. Apply leak lock to the pressure transducer threads before installation.

Display Control Board - From the Rear of the Unit1. Disconnect power from the refrigeration unit.


3. Remove the front louvered panel as described in COVERS AND PANELS.

4. Inside the machine compartment, tag and disconnect the wiring harness from the display control board (Figure 22).

Displaycontrol board

Nut Lockwasher

Electric I/Ocontrol board

Screw

Figure 22. Control Boards

5. Remove four nuts and four lock washers from the display control board.

6. Carefully remove the display control board from the machine compartment.

7. Reverse the above steps to install a replacement display control board.

Part Number 9291505 10/16 43


Display Control Board - From the Front of the Unit1. Remove front louvered panel.

2. Remove mounting screws and lower panel.

3. Remove and install display.

Electric Input/Output (I/O) Control Board1. Remove front and side louvered panel.

2. Make a note of plug locations on I/O board.

3. Remove and install board.

44 Part Number 9291505 10/16



Part Number 9291505 10/16 45

Refrigeration Schematic

THIS REPRESENTS A 2-DRAWER SYSTEM.

4-DRAWER UNIT IS COMPRISED OF TWO (2)2-DRAWER SYSTEMS OPERATED BY ONE CONTROL.

COND.TEMP.SENSOR

COND. COIL

COND. OUTLETTEMP. SENSOR

ACCESSPORT

FILTER/DRYER

RECEIVER

REFG. SOL.S

HOT GAS SOL.S

REFG. SOL.S

HOT GAS SOL.S

TXV

(2) 12V DCAXIAL FANS

EVAP. COIL

REFG. BOX 2

BOXTEMP.SENSOR

DEFROSTTEMP.SENSOR

TXV

(2) 12V DCAXIAL FANS

EVAP. COIL

REFG. BOX 1

BOXTEMP.SENSOR

DEFROSTTEMP.SENSOR

ACCESSPORT

PRESSURETRANSDUCER

ACCUMULATORCOMPRESSOR

1/3HP

Section 8Diagrams

46 Part Number 9291505 10/16

Diagrams Section 8

Versa Drawer Electric Input/Output (I/O) Control Board Connector Map

I/O B

OAR

D

BOAR

D CO

NNEC

TOR

MAP

C

OM

MUN

ICAT

ION

CABL

E

TO

DIS

PLAY

BO

ARD

I/O TO

DIS

P. 1

TO 1

2 TO

23

TO 3

PREF

ER S

HIEL

DED

TWIS

TED

PAIR

.1

AND

2 TW

ISTE

D,3

SHIE

LD.

POW

ER TO

DISP

LAY

BOAR

D1

– +8

V2

– G

ROUN

DI/O

TO D

ISP.

1 TO

12 T

O 2

TEM

PERA

TURE

SEN

SORS SU

CTIO

NPR

ESSU

RETR

ANSD

UCER

1 –

+5V

2 –

SIGN

AL3

– CO

MM

ON

85–2

65 VA

C50

/60

HZCO

NTRO

L PO

WER

J25–

AC H

OTFO

R AL

L AC

LOAD

S

J28

1 –

D3

REF

G. S

OLEN

OID

2 –

D3

HOT

GAS

SOL

ENOI

D 3

– D

4 R

EFG.

SOL

ENOI

D 4

– D

4 H

OT G

AS S

OLEN

OID

J27

1 –

D1

REF

G. S

OLEN

OID

2 –

D1

HOT

GAS

SOL

ENOI

D 3

– D

2 R

EFG.

SOL

ENOI

D 4

– D

2 H

OT G

AS S

OLEN

OID

J29

1 –

D1

FRAM

E HE

ATER

2 –

NC

3 –

D2

FRAM

E HE

ATER

1 –

COM

MON

FOR

D1 A

ND

D2

DRW

SW

ITCH

ES2

– D1

SW

ITCH

3 –

D2 S

WIT

CH4

– CO

MM

ON FO

R D3

AND

D

4 DO

OR S

WIT

CHES

5 –

D3 S

WIT

CH6

– D4

SW

ITCH

1 –

+12V

FOR

D1 A

ND D

2 FA

NS2

– D1

FANS

RET

URN

3 –

D2 FA

NS R

ETUR

N4

– +1

2V FO

R D3

AND

D4

FANS

5 –

D3 FA

NS R

ETUR

N6

– D4

FANS

RET

URN

J30

1 –

D3

FRAM

E HE

ATER

2 –

NC

3 –

D4

FRAM

E HE

ATER

J18

J19

J11

1

J1

D1D2

BOX

J2 COIL

J3 BOX

J4 COIL

J34

SP2

1

J11

SP1

1

J26 AC

HOT

COM

P 2

J25

J24 CO

MP

1CO

ND FA

ND3

& D

4 VA

LVES

J32 2

J33 1

J28

J27

1D1

& D

2 VA

LVES1

J29

J31

J23

J22

1

11

14

J30

1

J9 COND

1CO

ND 2

BOX

J10

COIL

J36

BOX

J35

COIL

J5

D3D4

BOX

J6 COIL

J7 BOX

J8 COIL

Part Number 9291505 10/16 47

Section 8 Diagrams

Versa Drawer 4-Drawer Wiring Diagram (1 of 2)

GL1

DISP

LAY

BOAR

DPO

WER

TO I/

O BO

ARD

1–

+8V

2–

GROU

NDDI

SP.T

O I/O

1TO

12T

O 2

I/O B

OAR

DSE

E BO

ARD

CONN

ECTO

RFO

R PI

N CO

NNEC

TIO

N DE

TAIL

S

CO

MM

UNIC

ATIO

N CA

BLE

TO I/

O B

OAR

DDI

SP.T

O I/O

1TO

12T

O 2

3TO

3PR

EFER

SHI

ELDE

D TW

ISTE

DPA

IR. 1

AND

2 T

WIS

TED,

3 SH

IELD

.

CONT

ROL

POW

ER

N

J11

1

J2

J18

J19 BO

X

1

J11 J1

J3 BOX

COIL

J2

D1

COIL

J4

D2

36

1 J23

1

4

52 4

1

J22

CON

D 2

BOX

J5J7 BO

X

J6

D3

COIL

J8

D4

COIL

J10

CON

D 1

J9 OU

T

J36

OU

TIN

COM

P 1

J11

SP

1

J35 IN

J34

1S

P2

J26

COM

P 2

1

J24

AC H

OT 2426

J33

J25

J32

12 CO

ND

FAN

J28

D3

& D

4VAL

VE

S

1

3325

3214

1718

13

12V

DC

MTR

35

HEA

TER

SW

ITCH

12V

DC

DRA

WE

R L

IMIT

EVAP

.FA

NS

7

1 2

MTR

MTR

8

34D

RAW

ER

FRA

ME

PR

OB

E

PR

OB

E

EVAP

.TE

MP.

BOX

TEMP

.

1 3

MTR

DRA

WE

R L

IMIT

DRA

WE

R FR

AM

E

EVAP

.TE

MP.

EVAP

.FA

NS

12V

DC

SW

ITCH

7MTR

9

HEA

TER

PR

OB

E

PR

OB

EBO

XTE

MP.

4M

TR

109

1

87

1112

J31

134

J29

1

J30

3635 37

D1

& D

2VAL

VE

S

J27

1

1116

1215

DRA

WE

R L

IMIT

DRA

WE

R FR

AM

E

EVAP

.TE

MP.

12

EVAP

.FA

NS

SW

ITCH

DRA

WE

R L

IMIT

5

10 11

36

HEA

TER

DRA

WE

R FR

AM

E

EVAP

.TE

MP.

10

PR

OB

E

PR

OB

EBO

XTE

MP.

64

EVAP

.FA

NS

12V

DC

MTR

MTR

SW

ITCH

37

HEA

TER

BOX

TEMP

.P

RO

BE

PR

OB

E

BOX

3

BOX

4

BOX

2

BOX

1

48 Part Number 9291505 10/16

Diagrams Section 8


SP2

J34

SO

LEN

OID

SO

LEN

OID

HOT

GA

S

SO

LEN

OID

SO

LEN

OID

HOT

GA

S

12 16

HOT

GA

SS

OLE

NO

ID

SO

LEN

OID

RE

FG.

RE

FG.

14 18 33

HOT

GA

SS

OLE

NO

ID

SO

LEN

OID

RE

FG.

CO

ND.

FAN

1

MTR

RE

FG.

11 15

BOX

13 17COND 2

COIL

COND 1

BOX COIL

J9

COIL

COIL

D3

BOX

J5

D1

J6

BOX

1

J1

J11

J2

BOX

J10

D4

J36

COIL

BOX

J7

D2

J8

COIL

J35

J3 J4

32M

TR

25

FOR

CO

MP

1

COM

PR

ES

SO

R 1

MTR

TRA

NS

DU

CE

RP

RE

SS

UR

EN

SK CO

ND.

OU

T 1

TEM

P. P

RO

BE

CO

ND. I

N 1

CO

ND.F

AN

2

TEM

P. P

RO

BE

26

WH

ITE

(VO

UT)

BLA

CK

(CO

M)

RE

D(V

DC

IN)

WH

ITE

(VO

UT)

BLA

CK

(CO

M)

RE

D(V

DC

IN)

MTR

CO

MP

RE

SS

OR

2

FORC

OM

P. 2

PR

ES

SU

RE

TRA

NS

DU

CE

R

NS

K TEMP

. PR

OB

E

TEMP

. PR

OB

E

CON

D. O

UT

2

CON

D. IN

2

D3 & D4VALVESAC HOT1

SP11 COMP 2 COMP 1

CONDFAN12

J24J11 J26 J32J25 J33

D1 & D2VALVES

1 1

J30

J28 J27

1

J19

J181

J23

J29

J22

4

1

1

J31

1

DRAW

ER 2

DRAW

ER 1

DRAW

ER 4

DRAW

ER 3

I/O BOARD

BOARD CONNECTOR MAP

COMMUNICATION CABLETO DISPLAY BOARD

I/O TO DISP.1 TO 12 TO 23 TO 3PREFER SHIELDEDTWISTED PAIR.1 AND 2 TWISTED,3 SHIELD.

POWER TODISPLAY BOARD1 – +8V2 – GROUNDI/O TO DISP.1 TO 12 TO 2

TEMPERATURE SENSORS

SUCTIONPRESSURETRANSDUCER1 – +5V2 – SIGNAL3 – COMMON

85–265 VAC50/60 HZ

CONTROL POWER

J25–AC HOTFOR ALL AC LOADS

J28 1 – D3 REFG. SOLENOID 2 – D3 HOT GAS SOLENOID 3 – D4 REFG. SOLENOID 4 – D4 HOT GAS SOLENOID

J27 1 – D1 REFG. SOLENOID 2 – D1 HOT GAS SOLENOID 3 – D2 REFG. SOLENOID 4 – D2 HOT GAS SOLENOID

J29 1 – D1 FRAME HEATER 2 – NC 3 – D2 FRAME HEATER

1 – COMMON FOR D1 AND D2 DRW SWITCHES2 – D1 SWITCH3 – D2 SWITCH4 – COMMON FOR D3 AND D4 DOOR SWITCHES5 – D3 SWITCH6 – D4 SWITCH

1 – +12V FOR D1 AND D2 FANS2 – D1 FANS RETURN3 – D2 FANS RETURN4 – +12V FOR D3 AND D4 FANS5 – D3 FANS RETURN6 – D4 FANS RETURN

J30 1 – D3 FRAME HEATER 2 – NC 3 – D4 FRAME HEATER

Part Number 9291505 10/16 49

Section 8 Diagrams


DISP

LAY

BOAR

DPO

WER

TO I/

O B

OAR

D1

– +

8V2

– G

ROUN

DDI

SP.T

O I/

O1

TO 1

2TO

2

I/O B

OAR

DSE

E BO

ARD

CONN

ECTO

RFO

R PI

N CO

NNEC

TIO

N DE

TAIL

S

COM

MUN

ICAT

ION

CABL

ETO

I/O

BO

ARD

DISP

.TO

I/O

1TO

12

TO 2

3TO

3PR

EFER

SHI

ELDE

D TW

ISTE

DPA

IR. 1

AND

2 T

WIS

TED,

3 SH

IELD

.

CONT

ROL

POW

ER

L1 G N

BOX

2

BOX

1

50 Part Number 9291505 10/16

Diagrams Section 8


DRAW

ER 2

DRAW

ER 1

I/O B

OAR

D

BOAR

D CO

NNEC

TOR

MAP

COM

MUN

ICAT

ION

CABL

ETO

DIS

PLAY

BO

ARD

I/OTO

DIS

P.1

TO 1

2TO

23

TO 3

PREF

ER S

HIEL

DED

TWIS

TED

PAIR

.1

AND

2 TW

ISTE

D,3

SHIE

LD.

POW

ER T

ODI

SPLA

Y BO

ARD

1 –

+8V

2 –

GRO

UND

I/O T

O DI

SP.

1 TO

12

TO 2

TEM

PERA

TURE

SEN

SORS

SUCT

ION

PRES

SURE

TRAN

SDUC

ER1

– +5

V2

– SI

GNAL

3 –

COM

MON

85–2

65VA

C50

/60

HZCO

NTRO

L PO

WER

J25–

AC H

OTFO

R AL

L AC

LOA

DS

J28

1 –

D3

REF

G. S

OLEN

OID

2 –

D3

HOT

GAS

SOL

ENOI

D 3

– D

4 R

EFG.

SOL

ENOI

D 4

– D

4 H

OT G

AS S

OLEN

OID

J27

1 –

D1

REF

G. S

OLEN

OID

2 –

D1

HOT

GAS

SOL

ENOI

D 3

– D

2 R

EFG.

SOL

ENOI

D 4

– D

2 H

OT G

AS S

OLEN

OID

J29

1 –

D1

FRA

ME

HEAT

ER 2

– N

C 3

– D

2 FR

AME

HEAT

ER

1 – C

OMMO

N FO

R D1

AND

D2 D

RW S

WIT

CHES

2 – D

1 SW

ITCH

3 – D

2 SW

ITCH

4 – C

OMMO

N FO

R D3

AND

D4 D

OOR

SWIT

CHES

5 – D

3 SW

ITCH

6 – D

4 SW

ITCH

1 –

+12V

FOR

D1

AND

D2 F

ANS

2 –

D1 F

ANS

RETU

RN3

– D2

FAN

S RE

TURN

4 –

+12V

FOR

D3

AND

D4 F

ANS

5 –

D3 F

ANS

RETU

RN6

– D4

FAN

S RE

TURN

J30

1 –

D3

FRA

ME

HEAT

ER 2

– N

C 3

– D

4 FR

AME

HEAT

ER

DELFIELD 980 SOUTH ISABELLA ROAD, MOUNT PLEASANT, MI 48858

800-733-8821 WWW.DELFIELD.COM

To learn how Manitowoc Foodservice and its leading brands can equip you, visit our global web site at www.manitowocfoodservice.com, then discover the regional or local resources available to you.

©2014 Manitowoc Foodservice except where explicitly stated otherwise. All rights reserved. Continuing product improvement may necessitate change of specifications without notice.

Part Number 9291505 10/16

Every new piece of Manitowoc Foodservice equipment comes with KitchenCare™ and you choose the level of service that meets your operational needs from one restaurant to multiple locations.

StarCare – Warranty & lifetime service, certified OEM parts, global parts inventory, performance auditedExtraCare — CareCode, 24/7 Support, online/mobile product informationLifeCare – Install & equipment orientation, planned maintenance, KitchenConnect™, MenuConnectTalk with KitchenCare™ • 1-844-724-CARE • www.mtwkitchencare.com

Documents

Refrigeration Units - Delfield