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Table of Contents
Related Manuals for Hoshizaki RNC-120A-LA
Summary of Contents for Hoshizaki RNC-120A-LA
- Page 1 MODEL SERVICE MANUAL 74MA-527 ISSUED: FEB. 29, 2000 REVISED:...
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Page 2: Table Of Contents
2. SPECIFICATIONS ---------------------------------------------------------------------------------- 2 3. DIMENSIONS ---------------------------------------------------------------------------------------- 3 [a] RNC-90A-RA, RNC-120A-RA ---------------------------------------------------------------- 3 [b] RNC-150A-RA, RNC-180A-RA, RNC-210A-RA ----------------------------------------- 4 [c] RNC-90A-LA, RNC-120A-LA ---------------------------------------------------------------- 5 [d] RNC-150A-LA, RNC-180A-LA, RNC-210A-LA ------------------------------------------ 6 4. PERFORMANCE DATA --------------------------------------------------------------------------- 7 5. REFRIGERATION CIRCUIT ----------------------------------------------------------------------- 8 6. -
Page 3: For Safety And Best Operating Results
1. FOR SAFETY AND BEST OPERATING RESULTS Hoshizaki Counter Showcase is intended for temporary food display. Constructed with much glass, this showcase gives relatively insufficient heat insulation and poor cooling performance compared with refrigerators in general. For safe and efficient operation, be sure to follow the instructions below. -
Page 4: Specifications
2. SPECIFICATIONS MODEL AC SUPPLY VOLTAGE AMPERAGE STARTING AMPERAGE ELECTRIC CONSUMPTION POWER FACTOR PULL DOWN TIME (10°C) SATURATION TEMPERATURE NET CAPACITY EXTERIOR DIMENSIONS INTERIOR DIMENSIONS EXTERIOR INTERIOR INSULATION REFRIGERATION SYSTEM DEFROST SYSTEM COMPRESSOR OUTPUT CONDENSER EVAPORATOR REFRIGERANT CONTROL REFRIGERANT REFRIGERANT CHARGE ELECTRIC CIRCUIT PROTECTION COMPRESSOR PROTECTION SLIDING DOOR... -
Page 5: Dimensions
3. DIMENSIONS [a] RNC-90A-RA, RNC-120A-RA 74MA5270002 Width Model RNC-90A-RA 20-1/16” RNC-120A-RA 31-7/8” 35-7/16” 20-7/8” 47-1/4” 32-11/16” Unit: inch... -
Page 6: [B] Rnc-150A-Ra, Rnc-180A-Ra, Rnc-210A-Ra
[b] RNC-150A-RA, RNC-180A-RA, RNC-210A-RA Model RNC-150A-RA RNC-180A-RA RNC-210A-RA Width 21-7/16” 59-1/16” 27-3/8” 70-7/8” 33-1/4” 82-11/16” Unit: inch 44-1/2” 56-5/16” 68-1/8” 74MA5270002... -
Page 7: [C] Rnc-90A-La, Rnc-120A-La
[c] RNC-90A-LA, RNC-120A-LA Unit: inch Width Model RNC-90A-LA 20-1/16” 35-7/16” 20-7/8” RNC-120A-LA 31-7/8” 47-1/4” 32-11/16” 74MA5270002... -
Page 8: [D] Rnc-150A-La, Rnc-180A-La, Rnc-210A-La
[d] RNC-150A-LA, RNC-180A-LA, RNC-210A-LA Model RNC-150A-LA RNC-180A-LA RNC-210A-LA Width 21-7/16” 59-1/16” 27-3/8” 70-7/8” 33-1/4” 82-11/16” Unit: inch 44-1/2” 56-5/16” 68-1/8” 74MA5270002... -
Page 9: Performance Data
4. PERFORMANCE DATA The following is a reference data showing the relationship between the ambient and interior temperatures measured at the center of the interior, 60mm above the board. Conditions: Ambient temperature 30°C (86°F), 50/60Hz, relative humidity 50%, AC100V Test units: RNC-210A and KN-210G domestic models (+ RNC-120A for reference) (50) (46.4) -
Page 10: Refrigeration Circuit
5. REFRIGERATION CIRCUIT Refrigerant 134a Compressor Condenser Drier Expansion Valve Evaporator Evaporator (Upper) (Lower) * The Expansion Valve controls the refrigerant flow rate to stabilize the pressure at the Evaporator inlet. 74MA5270002... -
Page 11: Wiring Diagram
6. WIRING DIAGRAM 74MA5270002 Compressor Start Capacitor Fan Motor Circuit Breaker PTC Thermistor Overload Relay... -
Page 12: Construction
7. CONSTRUCTION Sliding Glass Door Board Side Glass Packing (Side) Side Cover Side Frame Louver Breaker Cover Evaporator Pipe Top Cover Front Cover Separator Separator Cover Front Glass Packing (Front) Center Frame 74MA5270002... -
Page 13: Removal And Replacement
8. REMOVAL AND REPLACEMENT 1. Be sure to unplug the showcase before removing or replacing the parts. 2. Handle the glass parts with care. [a] FRONT GLASS AND TOP COVER In some cases, the Top Cover is tightly locked on the Top Frame and will not come off easily. -
Page 14: [B] Top Frame
[b] TOP FRAME * The Top Frame (Aluminum) on the machine compartment can be removed by unfastening two screws on the top and two screws on the side. * The Top Frame on the refrigerated compartment can be removed by unfastening four screws on the top and two screws on the bottom (for the Center Frame) and by removing the Evaporator Pipes from the Pipe Holder. -
Page 15: [E] Pipe Holder
[e] PIPE HOLDER Note: The Evaporator Pipes are tightly snapped in the Pipe Holder and should be removed and refitted carefully one by one. 1) Remove the Evaporator Pipes from the Pipe Holder. 2) Twist the Pipe Holder and remove it from the Top Frame. - Page 16 (2) After Auxiliary Code H-2 The Waterproof Cover is secured with a vinyl tape as shown below. After replacing the Cover, wind a new vinyl tape and refit the removed parts in the reverse order of the removal procedure. The users are instructed to ask service personnel for replacement of the Waterproof Cover as required.
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Page 17: Refrigerant Service Information
9. REFRIGERANT SERVICE INFORMATION 1) Allowable Compressor Opening Time and Prevention of Lubricant Mixture [R134a] The compressor must not be opened more than 30 minutes in replacement or service. Do not mix lubricants of different compressors even if both are charged with R134a, except when they uses the same lubricant. - Page 18 7) Evacuation, Vacuum Pump and Refrigerant Charge [R134a] Never allow the oil in the vacuum pump to flow backward. The vacuum level and vacuum pump may be the same as those for the current refrigerants. However, the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for R134a.
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Page 19: Constant Pressure Expansion Valve And Refrigerant Charge
10. CONSTANT PRESSURE EXPANSION VALVE AND REFRIGERANT CHARGE [a] SPECIFICATIONS Model: Manufacturer: Part Number: Refrigerant: Adjustment Range: Pressure Increase per Turn of Adjustment Screw: [b] FUNCTION Opens when the low side pressure drops, and lets in the refrigerant to keep a constant pressure. [c] CONSTRUCTION Close DOWN... -
Page 20: [D] Replacement
[d] REPLACEMENT Always protect the valve body by using a damp cloth to prevent the valve from overheating. Do not braze with the valve body exceeding 230°F. Always install a new Drier every time the sealed refrigeration system is opened. Do not replace the Drier until after all other repairs or replacement have been made. -
Page 21: Service Diagnosis
11. SERVICE DIAGNOSIS PROBLEM [1] Showcase will not start. [2] Poor cooling performance. [3] Foods dry up. [4] Exterior or interior sweating. 74MA5270002 POSSIBLE CAUSE 1. Circuit Breaker in OFF position. 2. Unplugged. 3. Power supply voltage too low. 4. No power supply to the wall outlet. (Breaker or fuse blown out.) 5. - Page 22 HOSHIZAKI ELECTRIC CO., LTD. 3-16 MINAMIYAKATA, SAKAE, TOYOAKE, AICHI 470-11 JAPAN PHONE: 0562-97-2111...