Manuals / Hoshizaki / Kitchen Appliance / Refrigerator

Hoshizaki 73183 service manual

Models: 73183

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•Make sure the power switch is in the "OFF" position before plugging in or unplugging the unit to reduce the risk of electric shock.

•Do not use a unit with a damaged power cord. The power cord should not be altered, jerked, bundled, weighed down, pinched, or tangled. Such actions could result in electric shock or fire. To unplug the unit, be sure to pull the plug, not the cord, and do not jerk the cord. Before unplugging a 4-prong plug, rotate the plug counter-clockwise to unlock it.

•To reduce the risk of electric shock, do not touch the plug or power switch with damp hands.

•Do not make any alterations to the unit. Alterations could result in electric shock, injury, fire, or damage to the unit.

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Contents

Commercial Series Refrigerated Kitchen Equipment Models Reach-In B-SeriesHoshizakiHoshizaki America, Inc Attn Hoshizaki Technical Support Department Complete and detailed explanation of the problemHOSHIZAKI AMERICA, INC 618 Highway 74 South Peachtree City, GA Phone 1-800-233-1940 Technical Support 770 487-2331 FaxCONTENTS A. Service for Refrigerant Lines D. Diagnostic ChartV. Replacement of Components 1. Refrigerant Recoveryserious injury Important Safety InformationIndicates a hazardous situation which could result in death or Indicates a situation which could result in damage to the unitPage I. Specifications A. Nameplate Ratings B. Dimensions1. Refrigerated Volume and Shelf Space 2. One Section/Two Section/Three Section Unit mm inII. General Information A. Construction 1. One Section2. Two Section 3. Three Section Model Shown CR3B-FS Modelsa Refrigerator B. Sequence of Operation1. Sequence Cycles and Shutdown 1. Startup/Cool Down2. Cool Down Achieved b Freezer1. Startup/Cool Down 3. Cool Down Restarta Refrigerator Refrigerator Sequence Flow ChartCharts 2. Sequence Flow1. Startup/Cool Down Freezer Sequence Flow Chartb Freezer 2. Cool Down AchievedC. Display Module 1. Display Module Layout Display Moduleb Temperature Setpoint 2. Controls and Adjustmentsa Default Settings c Changing the Temperature Display Scale F or CFreezer Control Module D. Control ModuleRefrigerator Control Module 1. Control Module LayoutAlarm Code 2. Alarm SafetiesAlarm Signals ProblemG. Thermistors 3. High-Pressure SwitchF. Mullion/Perimeter Heater 1. Compressor External or Internal OverloadIII. Technical Data A. Refrigeration Circuit B. Wiring Diagrams High-Pressure Switch1. CR1B-FS/HS, CR3B-FS/HS High-Pressure Switch 2. CR2B-FS/HS, CR3B-FS/HSHigh-Pressure Switch 3. CF1B-FS/HS, CF3B-FS/HSDefrost Thermostat High-Pressure Switch 4. CF2B-FS/HS, CF3B-FS/HSDefrost Thermostat Note Only the top receptacles have power 5. CR3B-FS/HS Receptacle Box Connection6. CF3B-FS/HS Receptacle Box Connection Note Only the top receptacles have powerIV. Service Diagnosis A. Diagnostic Procedure1. Refrigerator 9 Defrost Defrost Diagnosis2. Freezer 9 Defrost Defrost DiagnosisPage B. Control Module Check Startup/Cool DownDefrost C. Thermistor Check D. Diagnostic Chart 1. Unit Not CoolingUnit Not Cooling - Possible Cause 2. Evaporator is Frozen Up3. Defrost Fails to Terminate Evaporator is Frozen Up - Possible CauseV. Replacement of Components A. Service for Refrigerant Lines1. Refrigerant Recovery 2. Brazing 3. Evacuation and Recharge4 Close the low-side valve and high-side valve on the gauge manifold components ground wire B. Important Notes for Component ReplacementC. Door Re-Hinging Component2. Power Supply Connection A. CleaningB. Maintenance 1. ExteriorC. Shutdown and Long Storage