Related Manuals for Hoshizaki EUR27A
Summary of Contents for Hoshizaki EUR27A
- Page 1 FREEZER Service Manual EUR27A EUR48A EUF27A EUF48A Issued: 07-26-2019 Revised: 05-22-2023...
- Page 2 WARNING Only qualified service technicians should install and service the appliance. To obtain the name and phone number of your local Certified Service Representative, visit www.economyseries.com. No service should be undertaken until the technician has thoroughly read this Service Manual. Failure to service and maintain the appliance in accordance with this manual will adversely affect safety, performance, component life, and warranty coverage.
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Page 3: Table Of Contents
IMPORTANT This manual should be read carefully before the appliance is serviced. Read the warnings and guidelines contained in this booklet carefully as they provide essential information for the continued safe use, service, and maintenance of the appliance. Retain this booklet for any further reference that may be necessary. Contents Important Safety Information .................... -
Page 4: Important Safety Information
Important Safety Information Throughout this manual, notices appear to bring your attention to situations which could result in death, serious injury, damage to the appliance, or damage to property. Indicates a hazardous situation that, if not avoided, will result in DANGER death or serious injury. - Page 5 WARNING This appliance should be destined only to the use for which it has been expressly conceived. Any other use should be considered improper and therefore dangerous. The manufacturer cannot be held responsible for injury or damage resulting from improper, incorrect, and unreasonable use. Failure to install, operate, and maintain the appliance in accordance with this manual will adversely affect safety, performance, component life, and warranty coverage.
- Page 6 WARNING, continued • The 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 or instruction concerning use of the appliance by a person responsible for their safety. •...
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Page 7: General Information
I. General Information A. Construction Forced-air evaporator for quick Electronic thermostat temperature pull down Heavy duty hinges with automatic return NSF compliant interior cabinet Stainless steel front and cabinet Strong body with 2” thick walls, injected with polyurethane foam Heavy duty flat shelves using cyclopentane as the blowing agent earth friendly Solid door for improved... -
Page 8: Refrigeration Circuit
B. Refrigeration Circuit... -
Page 9: Sequence Of Operation And Service Diagnosis
II. Sequence of Operation and Service Diagnosis A. Sequence Flow Chart 1. Refrigerator... -
Page 10: Freezer
2. Freezer... -
Page 11: Service Diagnosis
B. Service Diagnosis Risque De Feu Ou D'Explosion DANGER Le Frigorigène Est Inflammable Risk of Fire or Explosion • Suivre attentivement les instructions Flammable Refrigerant Used de manipulation conformément à la • Follow handling instructions carefully réglementation gouvernementale. in compliance with U.S. government •... - Page 12 115VAC is used as a reference voltage when checking voltage to components. Voltage may vary depending on power supply. Factory Default Temperature Setpoint: • For EUR27A and EUR48A is 31°F (-0.5°C) • For EUF27A and EUF48A is -8°F (-22°C) Temperature Display Scale: °F (-°C)
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Page 13: Troubleshooting
1. Troubleshooting Check for correct appliance installation per the instruction manual and proper voltage per appliance nameplate. a) Not Cooling Not Cooling - Possible Cause 1. Power Supply a) Unplugged, off, blown fuse, tripped or defective circuit breaker. On three-section receptacle box, only top receptacles have power. - Page 14 b) Too Much Cooling Too much cooling - Possible Cause 1. Cabinet Thermistor a) Defective. c) Extreme Condensation Extreme condensation - Possible Cause 1. Cabinet Thermistor a) Loose. b) Installed improperly. 2. Door a) Do not shut completly (Defective gasket or hinges not adjusted).
- Page 15 g) Alarm Safeties LEDS Mains Voltage Compressor Description Off.Voltage bad (too high or too low). Wait period. (Intelligent Time Delay). Allows neutralisation of refrigerant pressure. On. Voltage good. No wait time. Cooling demand. Defrost Period. Starts after 6 hours of accumulated compressor run time for 25 minutes.
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Page 16: Control Module Check
C. Control Module Check 1. Control Module Display. Before replacing CM that does not show a visible defect and that you suspect is bad, conduct the following check procedure. This procedure will help you verify your diagnosis. Always choose a neutral (W) to establish a good neutral connection when checking high voltages. -
Page 17: Thermistor Check
D. Thermistor Check The cabinet thermistor is used for cabinet temperature control. Thermistor resistance varies depending on temperature. The control module monitors the thermistors to control system operation. No adjustment is required. Defrost initiation occurs every 6 hrs. of cumulative compressor run time with a maximum duration of 25-min. -
Page 18: Temperature Setting Dial (Eur)
E. Temperature Setting Dial (EUR) Marking 1 Cut-In/Cut-out: 41.0 33.1 Marking 2 Cut-In/Cut-out: 40.5 32.5 Marking 3 Cut-In/Cut-out: 39.9 32.0 Marking 4 Cut-In/Cut-out: 39.6 31.5 Marking 5 Cut-In/Cut-out: 39.0 30.9 Marking 6 Cut-In/Cut-out: 38.5 30.6 Marking 7 Cut-In/Cut-out: 37.9 30.0 Marking 8 Cut-In/Cut-out: 37.6 29.5... -
Page 19: Refrigeration Circuit And Component Service Information
III. Refrigeration Circuit and Component Service Information DANGER Risk of Fire or Explosion Flammable Refrigerant Used • Follow handling instructions carefully in compliance with U.S. government regulations. • Do not use mechanical devices to defrost. • Do not puncture refrigerant tubing. Risk of fire or explosion due to puncture of refrigerant tubing;... - Page 20 WARNING • Wear appropriate personal protective equipment (PPE) when servicing the appliance. • Technician must utilize a combustible gas leak detector at all times. • Notify everyone in the immediate area that you are working with flammable refrigerant. • Do not work on appliance in a confined space. Confirm area is well ventilated. •...
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Page 21: Service For Refrigerant Lines
A. Service for Refrigerant Lines WARNING • Repairs requiring the refrigeration circuit to be opened must be performed by properly trained and EPA-certified service personnel. • Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of refrigerant to the system (if using an electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG). - Page 22 2. Brazing DANGER Risk of Fire or Explosion Flammable Refrigerant Used • Servicing shall be done by factory authorized service personnel to minimize the risk of possible ignition due to incorrect parts or improper service. Risque De Feu Ou D'Explosion Le Frigorigène Est Inflammable •...
- Page 23 3. Evacuation 1) Attach a vacuum pump to the system. Be sure to connect the charging hoses to both high and low-side refrigerant piercing valves. IMPORTANT The vacuum level and vacuum pump may be the same as those for current refrigerants.
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Page 24: Maintenance
B. Maintenance WARNING • Unplug the appliance before performing maintenance to prevent electric shock or injury by moving parts. • Before performing maintenance, move all foods into another clean refrigerator or freezer. 1. Condenser Check the condenser once a year and use a brush or vacuum cleaner to clean the condenser as required. -
Page 25: Preparing The Appliance For Periods Of Non-Use
IV. Preparing the Appliance for Periods of Non-Use WARNING • When preparing the appliance for long storage, prevent the doors from closing to reduce the risk of children getting trapped. • To reduce the risk of electric shock, do not touch the attachment plug with damp hands. -
Page 26: Disposal
V. Disposal DANGER Risk of Fire or Explosion Flammable Refrigerant Used • Follow handling instructions carefully in compliance with U.S. government regulations. • Do not puncture refrigerant tubing. Risk of fire or explosion due to puncture of refrigerant tubing; follow handling instructions carefully. •... -
Page 27: Technical Information
A. Electrical and Refrigerant Data See the nameplate for electrical and refrigerant data. The nameplate is located inside the cabinet. Electrical and Refrigerant Data Design Pressure (PSIG) Refrigerant (oz.) Model AC Supply Voltage Amperes HIGH R-290 EUR27A 115/60/1 EUF27A 115/60/1 EUR48A 115/60/1 EUF48A 115/60/1... -
Page 28: Wiring Diagram
B. Wiring Diagram Model Run Capacitor Starting Capacitor EUR27A 12 μF 180 V it does not use... - Page 29 Model Run Capacitor Starting Capacitor EUF27A 12 μF 180 V it does not use...
- Page 30 Model Run Capacitor Starting Capacitor EUR48A 12 μF 180 V it does not use...
- Page 31 Model Run Capacitor Starting Capacitor EUF48A 20 μF 180 V it does not use...
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