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TABLE OF CONTENTS

The serial tag is a permanently affixed sticker on
which is recorded vital electrical and refrigeration data
about your Traulsen product, as well as the model
and serial number. This tag is located on the left
side of the interior compartment of all compact
undercounter refrigerator, freezer and prep table
models.

I. THE SERIAL TAG

-1-

READING THE SERIAL TAG

•

Serial = The permanent ID# of your Traulsen

•

Model = The model # of your Traulsen

•

Volts = Voltage

•

Hz = Cycle

•

PH = Phase

•

Total Current = Maximum amp draw

•

Minimum Circuit = Minimum circuit required

•

Lights = Light wattage

•

Heaters = Heater amperage

•

Refrigerant = Refrigerant type used

•

Design Pressure = High & low side operating

pressures and refrigerant charge

•

Agency Labels = Designates agency listings

I. THE SERIAL TAG

II. GENERAL INFORMATION

a-Introduction

b-Model Designations

c-Wiring Diagrams

d-Installation - See Owner

’

s Manual

e-Cleaning

f-Tools

III. SPECIFICATIONS

IV. OPERATING DATA

3-4

V. REMOVAL & REPLACEMENT OF PARTS

a-Evaporator Covers

b-Condensing Unit Cover

c-Thermostat

d-Door Gasket

e-Door

f-Door Hinge Mechanism

7-8

g-Defrost Timer

h-Heaters

i-Door Frame Heater

j-Condensing Unit Components

k-Evaporator Fan Motor

l-Condenser Coil

m-Compressor

n-Condenser Fan Assembly

o-Evaporator Coil

VI. SERVICE PROCEDURES & ADJUSTMENTS

a-System Access

b-Bolt On Piercing Valves

c-Seat On Piercing Valves

d-Refrigerant Leak Check

e-Evacuating System

16-17

f-Charging System

g-System Clean-Up

17-18

h-Door Adjustment

i-Rehinging Door

18-19

j-Defrost Timer Settings

k-Door Perimeter Heater Test

l-Defrost Heater Test

m-Drain Pan Heater Test

VII. ELECTRICAL OPERATION

a-Component Function

b-Sequence of Operation

c-Component Location

VIII. WIRING DIAGRAMS - 27

”

MODELS

IX. WIRING DIAGRAMS - 48

”

& 60

”

MODELS

X. TROUBLESHOOTING

Back Cover

-22-

VIII. WIRING DIAGRAMS - 48” & 60” MODELS

Electrical Diagram - Refrigerator Cabinets

Models: UHT48, UHT60, UPT488, UPT4812, UPT4818, UPT6012, UPT6018 & UPT6024, 120VAC/60HZ/1PH

Electrical Diagram - Freezer Cabinets

Model: ULT48 & ULT60, 120VAC/60HZ/1PH

FORT WORTH, TX.

MADE IN U.S.A.

COMMERCIAL REFRIGERATOR AND/OR FREEZER

286L PLATE NO. 432680-5

DATA NO. 432679-

MODEL

VOLTS

MAXIMUM FUSE SIZE OR

MINIMUM CIRUIT

HACR TYPE CIRCUIT BREAKER

AMPACITY

AMPS

TOTAL
AMPS

MAX. OPERATING AMBIENT

SN NO.

REFRIGERANT

OUNCES

TYPE

MAXIMUM

LIGHT AMPS

EVAPORATOR FAN MOTORS QTY.

FULL LOAD
AMPS EACH

DESIGN
PRESSURE
PSIG

H.S

L.S

ANTICONDENSATE HEATER AMPS

DEFROST HEATER AMPS

COMPRESSOR RATED LOAD AMPS

LRA

AMPS

CONDENSER FAN MOTORS QTY

FULL LOAD AMPS EACH

Содержание ULT27

Страница 1: ...epared for the use of trained Authorized Traulsen Service Agents and should not be used by those not properly qualified nor should the equipment for which it is prepared be adjusted or repaired by anyone except properly qualified personnel This manual is not intended to be all encompassing but is written to supplement the formal training on the job experience and other product knowledge acquired b...

Страница 2: ...inge Mechanism 7 8 g Defrost Timer 9 h Heaters 9 i Door Frame Heater 10 j Condensing Unit Components 11 k Evaporator Fan Motor 11 l Condenser Coil 12 m Compressor 13 n Condenser Fan Assembly 14 o Evaporator Coil 15 VI SERVICE PROCEDURES ADJUSTMENTS a System Access 16 b Bolt On Piercing Valves 16 c Seat On Piercing Valves 16 d Refrigerant Leak Check 16 e Evacuating System 16 17 f Charging System 17...

Страница 3: ...acity II c WIRING DIAGRAM Refer to the wiring diagrams on pages 21 and 22 for any service work performed on the unit Should you require another copy please contact Traulsen Ser vice at 800 825 8220 and provide the model and serial number of the unit involved II d INSTALLATION Generally compact undercounter refrigeration prod ucts are installed by the dealer or others contracted by the dealer or ow...

Страница 4: ... UPT4812 1 4 R 134a 12 oz 6 1 120 60 1 7 0 UPT4818 1 4 R 134a 12 oz 6 1 120 60 1 7 0 UPT6012 1 4 R 134a 12 oz 6 1 120 60 1 7 0 UPT6018 1 4 R 134a 12 oz 6 1 120 60 1 7 0 UPT6024 1 4 R 134a 12 oz 6 1 120 60 1 7 0 IV OPERATING DATA Refrigerator Model UHT27 Refrigerant R 134a R 134a Ambient Temperature 70 F 100 F Suction Presure Start of Cycle 43 lb 43 lb End of Cycle 15 lb 15 lb Discharge Pressure St...

Страница 5: ...UHT48 Refrigerant R 134a R 134a Ambient Temperature 70 F 100 F Suction Presure Start of Cycle 37 psig 36 psig End of Cycle 12 psig 15 psig Discharge Pressure Start of Cycle 58 psig 130 psig End of Cycle 102 psig 171 psig Freezer Model ULT48 Refrigerant R 404A R 404A Ambient Temperature 70 F 100 F Suction Presure Start of Cycle 37 psig 41 psig End of Cycle 14 psig 20 psig Discharge Pressure Start o...

Страница 6: ...everse the procedure to install WARNING UNPLUG UNIT BEFORE SERVICING 5 27 Models 48 60 Models Begin by removing the shelves from inside the cabi net In addition on prep tables it will also be neces sary to remove the pans and duct work Next remove the screw and lock washer and the canoe clips from the cover see figure 1 NOTE Lock washer must be installed Reverse the procedure to install Begin by a...

Страница 7: ...VAL REPLACEMENT OF PARTS cont d WARNING UNPLUG UNIT BEFORE SERVICING 27 Models 48 60 Models V c THERMOSTAT NOTE The thermostat bulb for the refrigerator is above the evaporator coil front area location access from the left side of the evaporator coil behind the door mullion Begin by removing the evaporator cover as outlined in section V a Next remove the screws that secure the thermostat and then ...

Страница 8: ...t to the maxi mum position placing support under the non hinged end of the door so minimum movement occurs when bolts from the lower hinge are removed see figure 11 Remove the bolts from the lower hinge plate and pro ceed to remove the door from the top hinge bracket The hinge plate pin and plastic bushing will remain in the top hinge plate To install position the lower hinge plate into the posi t...

Страница 9: ...ritical and must be installed Install the door as outlined in section V e V REMOVAL REPLACEMENT OF PARTS cont d WARNING UNPLUG UNIT BEFORE SERVICING 8 ILLUS NO NAME OF PART 1 Mach Screw 10 32 x 3 8 Truss Hd 2 Hinge Plate Lower RH Upper LH 3 Self Tapping Screw 1 4 20 x 5 8 Hex Washer Hd Type TT 4 Pin Upper Hinge Pivot 5 Hinge Spacer 6 Bushing Door Stop Short 7 Door Handle Does Not Include Tape 8 Do...

Страница 10: ...ined in DEFROST TIMER SETTINGS in the Service Procedures Adjustments section 9 V h HEATERS Begin by removing the evaporator and condensing unit covers as outlined in section V a b Next discon nect the lead wires to the defrost heater There is a ground wire attached from the heater shield to the side panel of the evaporator housing see figure 16 Disconnect the drain tube from the drain pan at the b...

Страница 11: ...cement heater and insert the new heater into the door frame channel NOTE Do not kink heater wire at the corners of the frame NOTE Check position of the heater cover in the top corners of the door frame Install the horizontal heater covers first then the ver tical ones using the following method a Hook the inside edge of the heater cover over the lip of the door frame b Use your fingers to push the...

Страница 12: ...ondensing unit components Don t damage any connected refrigeration or electrical lines and wires Begin by removing the evaporator cover as outlined in section V a Next pull the blade from the motor shaft see figure 22 NOTE To replace the fan blade only reverse the pro cedure to install Next remove the bolts that secure the evaporator fan motor mounting bracket Then disconnect the lead wires to the...

Страница 13: ... system and put unit back into operation V REMOVAL REPLACEMENT OF PARTS cont d WARNING UNPLUG UNIT BEFORE SERVICING 27 Models 48 60 Models WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN Begin by recovering refrigerant from the system NOTE The use of reclaiming...

Страница 14: ...PLACEMENT OF PARTS cont d WARNING UNPLUG UNIT BEFORE SERVICING 27 Models 48 60 Models WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN Begin by recovering refrigerant from the system NOTE The use of reclaiming equipment is mandatory Next disconnect the lead wire...

Страница 15: ...EMENT OF PARTS cont d WARNING UNPLUG UNIT BEFORE SERVICING 27 Models 48 60 Models V n CONDENSER FAN ASSEMBLY Begin by removing the screws that secure the fan mounting bracket and remove it from the condensing unit shroud see figure 28 Pull the blade from the motor shaft NOTE To replace the fan blade only reverse the pro cedure to install Next disconnect the lead wires from the motor and remove the...

Страница 16: ...when this part is replaced To finish charge the system and put unit back into operation V REMOVAL REPLACEMENT OF PARTS cont d WARNING UNPLUG UNIT BEFORE SERVICING 27 Models 48 60 Models V o EVAPORATOR COIL WARNING THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN Begin b...

Страница 17: ...REQUIRES THE USE OF REFRIG ERANTS BE CERTAIN THE WORK AREA IS WELL VENTILATED SAFETY GOGGLES AND GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE BURNS TO THE SKIN NOTE The use of R 22 in small quantities is recom mended as a trace gas for leak detection VI d REFRIGERANT LEAK CHECK cont d 1 Access the refrigeration system note see section VI a SYSTEM ACCESS 2 Attach gauge manifold set to the syst...

Страница 18: ...ifold set to the system low side to process tube on the compressor and the high side to the process tube on the drier NOTE See SYSTEM ACCESS VI f CHARGING SYSTEM cont d 3 Be sure system is properly leak checked and evacu ated before charging as outlined under LEAK CHECK and EVACUATING SYSTEM 4 Make certain both valves are closed on the gauge manifold Open the valve on the bottle Bleed charg ing ho...

Страница 19: ...t the door as outlined under DOOR ADJUST MENT VI SERVICE PROCEDURES ADJUSTMENTS cont d WARNING CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE EXERCISE EXTREME CAUTION AT ALL TIMES IF TEST POINTS ARE NOT EASILYACCESSIBLE DISCONNECT POWER ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST 18 VI g SYSTEM CLEAN UP INTRODUCTION cont d MASSI...

Страница 20: ... de frost cycle 3 Verify 120 volt supply to the heater 4 The reading should be 1 04 amp 5 If you want to perform a continuity check a Unplug the unit b Disconnect the lead wires to the heater c Use an ohmmeter to check for 110 0 ohms VII ELECTRICAL OPERATION VII a COMPONENT FUNCTION Compressor Pumps refrigerant through refrigeration lines and components Condenser Fan Draws air across condenser coi...

Страница 21: ...a Thermostat contact close powering compressor 3 Set Temperature Is Met a Unit returns to conditions in step 1 VII c COMPONENT LOCATION VII b SEQUENCE OF OPERATION cont d DEFROST MODE freezer 1 Unit Operating In Refrigeration Mode 2 Defrost Intiated By Defrost Timer a Defrost timer contacts 1 4 open 1 Power removed from evaporator fan 2 Power removed from thermostat contacts b Defrost timer contac...

Страница 22: ...AMS 27 MODELS Electrical Diagram Refrigerator Cabinet With Digital Thermometer Option Models UHT27 UPT276 UPT276 120VAC 60HZ 1PH Electrical Diagram Freezer Cabinet With Digital Thermometer Option Model ULT27 120VAC 60HZ 1PH ...

Страница 23: ...G DIAGRAMS 48 60 MODELS Electrical Diagram Refrigerator Cabinets Models UHT48 UHT60 UPT488 UPT4812 UPT4818 UPT6012 UPT6018 UPT6024 120VAC 60HZ 1PH Electrical Diagram Freezer Cabinets Model ULT48 ULT60 120VAC 60HZ 1PH ...

Страница 24: ...er malfunction Compressor short cycles on overload 1 Low voltage 2 Improper air flow over condenser 3 Low refrigerant charge 4 Compressor electrical component malfunction 5 High head pressure Compressor short cycles on thermostat 1 Improper air flow over evaporator coil 2 Low ambient conditions 3 Thermostat bulb improperly located 4 Thermostat malfunction Continuous unit operation 1 Loss of refrig...

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