Related Manuals for Hoshizaki HRE-70A(-UK)
Summary of Contents for Hoshizaki HRE-70A(-UK)
- Page 1 E4CA-672 ISSUED: NOV. 14, 2005 REVISED: APR. 4, 2006 HOSHIZAKI COMMERCIAL REFRIGERATOR/FREEZER HRE-70A(-UK) MODEL HRE-140A(-UK) HFE-70A(-UK) HFE-140A(-UK) SERVICE MANUAL...
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Page 2: Table Of Contents
CONTENTS PAGE I. GENERAL INFORMATION --------------------------------------------------------------------------- 1 1. SAFETY INSTRUCTIONS ------------------------------------------------------------------------- 1 2. CONSTRUCTION ----------------------------------------------------------------------------------- 3 3. MODEL NAME --------------------------------------------------------------------------------------- 4 4. SPECIFICATIONS ---------------------------------------------------------------------------------- 5 [a] HRE-70A(-UK) ----------------------------------------------------------------------------------- 5 [b] HRE-140A(-UK) --------------------------------------------------------------------------------- 6 [c] HFE-70A(-UK) ----------------------------------------------------------------------------------- 7 [d] HFE-140A(-UK) --------------------------------------------------------------------------------- 8 5. - Page 3 2. CONTROLLER BOARD -------------------------------------------------------------------------- 37 [a] SERVICING CONTROLLER BOARD ----------------------------------------------------- 37 [b] CHECKING THERMISTOR ------------------------------------------------------------------ 38 [c] CONTROLLER BOARD DIAGNOSIS ----------------------------------------------------- 39 IV. REMOVAL AND REPLACEMENT OF COMPONENTS ----------------------------------- 41 1. ENCLOSURE --------------------------------------------------------------------------------------- 41 [a] FRONT PANEL --------------------------------------------------------------------------------- 41 [b] TOP COVER ------------------------------------------------------------------------------------ 41 [c] SIDE PANEL ------------------------------------------------------------------------------------ 41 [d] GRIP ---------------------------------------------------------------------------------------------- 41 [e] DOOR--------------------------------------------------------------------------------------------- 41...
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Page 4: General Information
I. GENERAL INFORMATION 1. SAFETY INSTRUCTIONS The following instructions contain important safety precautions and should be strictly observed. The terms used here are defined as follows: WARNING: There is a possibility of death or serious injury to the service person and a third party or the user due to improper service operations or defects in serviced products. - Page 5 (7) Before servicing, check the surface temperature of the refrigeration circuit to prevent a burn. 5. Keep the following in mind when making electrical connections: (1) Check for proper grounding connections, and repair if necessary to prevent electric shocks. (2) Always use service parts intended for the applicable model for replacement of defective parts.
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Page 6: Construction
2. CONSTRUCTION HRE-140A Refrigeration Unit Switching Power Supply Top Cover Control Box Rear Cover Door Hinge Front Panel (R, Up) Interior Light Lift Hinge Door Switch Lock Trayslide Magnet Door (L) Door (R) Lift Hinge Door Hinge Lock (R, Lo) Trayslide Support Screw... -
Page 7: Model Name
“-UK”, power supply cord and attachment plug. Model Change Code Alphabetical order Width etc. Approximate value in cm 70: 700mm 140: 1400mm Destination E: Europe and other overseas countries Product Category Refrigerator Freezer Hoshizaki... -
Page 8: Specifications
4. SPECIFICATIONS [a] HRE-70A(-UK) AC SUPPLY VOLTAGE * 1 Phase 230V 50Hz POWER SUPPLY CAPACITY * 0.82kVA (3.57A) AMPERAGE * 2.31A STARTING AMPERAGE * 8.2A ELECTRIC CONSUMPTION (RATED) * 421W (Except Drain Pan Heater 250W) Heater: 497W Defrost: 497W POWER FACTOR * HEAT REJECTION 535W PULLDOWN TIME (10°C to 0°C) -
Page 9: [B] Hre-140A(-Uk)
[b] HRE-140A(-UK) AC SUPPLY VOLTAGE * 1 Phase 230V 50Hz POWER SUPPLY CAPACITY * 1.12 kVA (4.86A) AMPERAGE * 3.89A STARTING AMPERAGE * 12.6A ELECTRIC CONSUMPTION (RATED) * 678W (Except Drain Pan Heater 250W) Heater: 523W Defrost: 523W POWER FACTOR * 1105W HEAT REJECTION PULLDOWN TIME (10°C to 0°C) -
Page 10: [C] Hfe-70A(-Uk)
[c] HFE-70A(-UK) AC SUPPLY VOLTAGE * 1 Phase 230V 50Hz POWER SUPPLY CAPACITY * 1.16kVA (5.02A) AMPERAGE * 3.87A STARTING AMPERAGE * 14.8A ELECTRIC CONSUMPTION (RATED) * 675W (Except Drain Pan Heater 250W) Heater: 550W Defrost: 550W POWER FACTOR * 735W HEAT REJECTION PULLDOWN TIME (10°C to 0°C) -
Page 11: [D] Hfe-140A(-Uk)
[d] HFE-140A(-UK) AC SUPPLY VOLTAGE * 1 Phase 230V 50Hz POWER SUPPLY CAPACITY * 1.27kVA (5.86A) AMPERAGE * 4.45A STARTING AMPERAGE * 20.0A ELECTRIC CONSUMPTION (RATED) * 948W (Except Drain Pan Heater 250W) Heater: 767W Defrost: 767W POWER FACTOR * 1330W HEAT REJECTION PULLDOWN TIME (10°C to 0°C) -
Page 12: Dimensions
5. DIMENSIONS [a] HRE-70A(-UK) -
Page 13: [B] Hre-140A(-Uk)
[b] HRE-140A(-UK) -
Page 14: [C] Hfe-70A(-Uk)
[c] HFE-70A(-UK) -
Page 15: [D] Hfe-140A(-Uk)
[d] HFE-140A(-UK) -
Page 16: Technical Information
II. TECHNICAL INFORMATION 1. WIRING DIAGRAM [a] HRE-70A(-UK) [Auxiliary Code: Before F-1]... -
Page 17: [B] Hre-70A(-Uk) [Auxiliary Code: From F-1]
[b] HRE-70A(-UK) [Auxiliary Code: From F-1]... -
Page 18: [C] Hre-140A(-Uk) [Auxiliary Code: Before F-1]
[c] HRE-140A(-UK) [Auxiliary Code: Before F-1]... -
Page 19: [D] Hre-140A(-Uk) [Auxiliary Code: From F-1]
[d] HRE-140A(-UK) [Auxiliary Code: From F-1]... -
Page 20: [E] Hfe-70A(-Uk) [Auxiliary Code: Before F-1]
[e] HFE-70A(-UK) [Auxiliary Code: Before F-1]... -
Page 21: [F] Hfe-70A(-Uk) [Auxiliary Code: From F-1]
[f] HFE-70A(-UK) [Auxiliary Code: From F-1]... -
Page 22: [G] Hfe-140A(-Uk) [Auxiliary Code: Before F-1]
[g] HFE-140A(-UK) [Auxiliary Code: Before F-1]... -
Page 23: [H] Hfe-140A(-Uk) [Auxiliary Code: From F-1]
[h] HFE-140A(-UK) [Auxiliary Code: From F-1]... -
Page 24: Refrigeration Circuit
2. REFRIGERATION CIRCUIT Compressor Drier Evaporator Interior Fan Motor Refrigerant: HFC-134a (HRE-70A) HFC-404A (HRE-140A, HFE-70A, HFE-140A) -
Page 25: Sequence
3. SEQUENCE When the power supply is turned on, the anti-condensation heater is energized immediately, the interior fan motor and condenser fan motor start, and the temperature display window indicates the cabinet temperature. The compressor starts after 3 minutes (soft start). A defrost cycle starts 6 hours after the power supply is turned on. - Page 26 When the defrost cycle starts, the drain pan heater turns on to evaporate defrost water. The heater remains energized until the thermostat trips. [a] If the thermostat trips while the defrost heater is energized, the thermostat turns on and off the drain pan heater, and turns it off when the defrost heater is de-energized.
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Page 27: Electronic Controls
4. ELECTRONIC CONTROLS [a] SET POINT TEMPERATURE (mean temperature between compressor ON and OFF temperatures) Set Point Temperature HRE series: -6 to +12°C HFE series: -25 to -7°C Time Compressor [b] CABINET TEMPERATURE DIFFERENTIAL 3.5 K Note: On the Controller Board only. Actual differential may be 4 - 6 K. [c] DEFROST CYCLE Every 6 hours Note: During a defrost cycle, the Temperature Display Window indicates “dF”. -
Page 28: [G] Compressor Soft Start
[g] COMPRESSOR SOFT START 1) Startup Power ON 3 min Compressor Condenser Fan Motor Interior Fan Motor Cabinet Temp. Display When the power supply is turned on, the Interior Fan Motor and Condenser Fan Motor start up and the Temperature Display Window shows the cabinet temperature, but the Compressor starts up with a 3 minute delay. -
Page 29: [I] Cabinet Temperature And Temperature Display
Some models are provided with a High Pressure Switch. If the high-side pressure rises to operate the Pressure Switch, the Compressor will not restart for at least 5 minutes to protect itself. Refrigerant Setting Part Code Type (bar [gauge]) Model R134a Cut in 24.5 456384-01... -
Page 30: [L] Manual Defrost
[l] MANUAL DEFROST When the Manual Defrost Button is pressed, the refrigerator/freezer will start a manual defrost cycle. The refrigerator/freezer will start repeating automatic defrost cycles 6 hours after the Manual Defrost Button is pressed. To cancel the manual defrost cycle, turn off the power supply. -
Page 31: Error Codes
5. ERROR CODES In case of trouble, the Temperature Display Window will alternately flash every second between one of the following error codes and the cabinet temperature. The error codes are displayed in the following order of priority: Priority Code Error EEPROM Write Error EEPROM Verify Error... - Page 32 drops to 2K below the set point. This function is available even during a defrost cycle. The “E1” display will automatically reset when the cabinet temperature drops to 2K below the set point. The cause may be: 1) The Doors are opened too frequently or left open; 2) The Compressor is defective or gas is leaking;...
- Page 33 The cause may be: 1) The ambient temperature is too low; or 2) The Interior Thermistor (black) is defective. Differential Power ON 4 K (deg) “E2” error resets (Set Point + 2K) Set Point Temp. (Set Point - 2K) Alert Temp. (Set Point - 5K) Alert Timer...
- Page 34 minutes. At the first detection, the Pressure Alert Timer will start counting down from 60 minutes. The Compressor will restart after the 5 minute interruption, if the Pressure Switch is off and the Clog Thermistor senses a temperature below 50°C. The Compressor will not restart until the above conditions are satisfied.
- Page 35 Timer starts 2 min High “E7” error resets Clog Detection (58°C) Cabinet Temp. Temp. Display Flashing “E7” Window [h] Defrost Thermistor Defective (E8) When the Defrost Thermistor senses a temperature below -55°C (open circuit) or above 50°C for 10 minutes (short circuit), “E8” will be displayed. A short circuit will not be detected for 1 hour after the power supply is turned on.
- Page 36 [i] Clog Thermistor Defective (E9) When the Clog Thermistor senses a temperature below -22°C (open circuit) or above 86°C for 10 minutes (short circuit), “E9” will be displayed. A short circuit will not be detected for 1 hour after the power supply is turned on. When the power supply is turned on with the Set Point Button pressed, a short circuit will be detectable immediately after startup.
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Page 37: Heater Layout
6. HEATER LAYOUT Anti-condensation Mullion Heater Antifreeze Pipe Heater Anti-condensation Frame Heater Anti-condensation Anti-condensation Antifreeze Model Frame Heater Mullion Heater Pipe Heater Wattage (Part #) Wattage (Part #) Wattage (Part #) HRE-70A 24W (364284-09) 3W (469070-01) HRE-140A 30W (364284-07) 20W (469564-01) 3W (469070-01) HFE-70A 42W (364285-03) -
Page 38: Service Diagnosis
III. SERVICE DIAGNOSIS 1. COMPONENTS COMPONENT CHECK REMEDY Controller Board (See “2. CONTROLLER BOARD”) Interior Thermistor Defrost Thermistor Clog Thermistor Air Filter Clogged Clean or replace. Condenser Dirty fins Clean. No difference between inlet and outlet Clean or wash. temperatures Condenser Fan Motor Smell of burn Replace. - Page 39 COMPONENT CHECK REMEDY Compressor Resistance between terminals Replace. Compressor Winding Resistance (Ω) Primary Secondary FR8.5G 12.0 SC10CL 11.8 SC12CL 13.7 SC18CL 14.1 Starter Continuity between terminals Replace. Start Capacitor Deformed or damaged Replace. Run Capacitor Leaking impregnant Loose terminal connection Correct.
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Page 40: Controller Board
2. CONTROLLER BOARD [a] SERVICING CONTROLLER BOARD 1) If receiving a service call, ask the user to turn off the power supply and turn it on again, while watching the refrigerator/freezer. This will reset the controller, and in some cases normal operation will resume. -
Page 41: [B] Checking Thermistor
[b] CHECKING THERMISTOR 1) Remove the Thermistor’s intermediate connector from the Controller Board. 2) Put ice and water in a glass or other container to make 0°C water. Immerse the Thermistor bulb in the water for 5 minutes (at the center of the container). 3) Use the Ω... -
Page 42: [C] Controller Board Diagnosis
[c] CONTROLLER BOARD DIAGNOSIS PROBLEM CHECK REMDEDY No temperature Transformer’s secondary circuit Replace Controller Board. indication. voltage is 12V AC. Replace Transformer. Compressor will Output to Relay X1 is 12V DC. Check Relay. not start. Replace Controller Board. Resistance of Interior Thermistor Replace if resistance is not correct. - Page 43 Relay Controller Board Ground Fault Interrupter Transformer Transformer...
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Page 44: Removal And Replacement Of Components
IV. REMOVAL AND REPLACEMENT OF COMPONENTS WARNING Always unplug the refrigerator/freezer before replacing components. 1. ENCLOSURE [a] FRONT PANEL Remove the knurled screws on the bottom, and lift off the Front Panel. [b] TOP COVER Remove the screws on the top, and pull off the Top Cover toward you. [c] SIDE PANEL Remove the screws on the front, hold the Side Panel with both hands, and pull it off diagonally forward. -
Page 45: [G] Door Gasket
[g] DOOR GASKET 1) Open the Door. 2) Detach the Door Gasket from the Door Pack. 3) Spray water on the Door Pack Channel with a sprayer. 4) Fit the four corners of the Door Gasket into those of the Door Pack Channel. 5) Push in each part of the Door Gasket from both sides. -
Page 46: Control Box
5) Hold the Handles and lift off the Refrigeration Unit Base. Note: The removed refrigeration unit is exposed and unprotected. Be careful not to damage the Evaporator. 3. CONTROL BOX 1) Remove all the connectors from the Control Box (Thermistors, interior parts, refrigeration unit parts, Power Supply Cord). -
Page 47: Refrigeration Circuit
5. REFRIGERATION CIRCUIT Pressure Switch Compressor Interior Thermistor Condenser Drier Fan Motor Evaporator Defrost Thermal Thermistor Fuse Air Filter Condenser Clog Thermistor Defrost Heater [a] REFRIGERANT The HRE-70A(-UK) is charged with refrigerant R134a, and the other models with R404A. [b] COMPRESSOR 1) Unplug the refrigerator/freezer. -
Page 48: [C] Evaporator And Defrost Heater
[c] EVAPORATOR AND DEFROST HEATER 1) Unplug the refrigerator/freezer. 2) Remove the Front Panel and Top Cover. 3) Recover the refrigerant from the Access Valve, and store it in a proper container, if required by an applicable law. 4) Disconnect the Defrost Heater and Thermal Fuse wiring. 5) Remove the Air Duct. -
Page 49: Interior Fan Motor
7) Remove the Condenser and Drier from the Refrigeration Unit Base, and disconnect them using brazing equipment. 8) To replace the removed parts, reverse the above removal procedure. Note: 1. After replacing the refrigeration circuit components, thoroughly remove flux and oxide films on the welded parts, and treat them against corrosion. -
Page 50: Drain Pan (Thermostat, Fuse)
7. DRAIN PAN (THERMOSTAT, FUSE) 1) Unplug the refrigerator/freezer. 2) Remove the Drain Cover (D). 3) Disconnect the connectors between the cabinet and Drain Pan. Fix the cabinet side connector with the wire retainer inside the cabinet to keep the connector and wiring above the cabinet bottom. -
Page 51: Interior Light
8. INTERIOR LIGHT 1) Unplug the refrigerator/freezer. 2) Unscrew the Light Shield. 3) Replace the Interior Light (100/110V AC, 40W). 4) To replace the removed parts, reverse the above removal procedure. 9. DOOR HINGE 1) Unplug the refrigerator/freezer. 2) Use a flat blade screwdriver to remove the Stopper (plastic plug) from the cabinet. 3) Remove the Door Hinge and Door. -
Page 52: Tip-Resistant Kit
10. TIP-RESISTANT KIT Protect the unit from tipping over by fixing the four Legs with the following tip-resistant kit (optional): [Tip-Resistant Kit] Shakeproof Leg (454440-01, optional) Shakeproof Fitting (454441-01, optional) Anchor Bolt M10 (not provided) [Installation Example] 1) Replace the adjustable ends of the Legs with the Shakeproof Legs. 2) Fix the two rear Shakeproof Fittings to the floor. - Page 53 HOSHIZAKI EUROPE LTD. UNIT A, STAFFORD PARK 18, TELFORD, SHROPSHIRE TF3 3DJ ENGLAND PHONE: 01952-291777 HOSHIZAKI ELECTRIC CO., LTD. 3-16 MINAMIYAKATA, SAKAE, TOYOAKE, AICHI 470-1194 JAPAN PHONE: 0562-97-2111...
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