Related Manuals for Hoshizaki Reach-In B-Series
Summary of Contents for Hoshizaki Reach-In B-Series
- Page 1 Hoshizaki Hoshizaki America, Inc. Commercial Series Refrigerated Kitchen Equipment Models Reach-In B-Series SERVICE MANUAL “A Superior Degree of Reliability” www.hoshizaki.com Number: 73183 Issued: 3-23-2011 Revised: 12-12-2012...
- Page 2 Should the reader have any questions or concerns which have not been satisfactorily addressed, please call, send an e-mail message, or write to the Hoshizaki Technical Support Department for assistance. Phone: 1-800-233-1940; (770) 487-2331 Fax: 1-800-843-1056;...
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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 manual carefully as they provide essential information for the continued safe use, service, and maintenance of the appliance. Retain this manual for any further reference that may be necessary. CONTENTS Important Safety Information .................... - Page 4 D. Alarm Safeties ......................38 1. Control Module with Remote Display Module............38 2. Control Module with Integrated Display ..............39 E. Safety Devices ......................40 F. Mullion/Perimeter Heater ..................... 40 IV. Replacement of Components ..................41 A. Service for Refrigerant Lines ..................41 1.
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Page 5: Important Safety Information
Important Safety Information Throughout this manual, notices appear to bring your attention to situations which could result in death, serious injury, or damage to the appliance or damage to property. WARNING Indicates a hazardous situation which could result in death or serious injury. - Page 6 WARNING, continued For 208-230VAC Models • THE APPLIANCE MUST BE GROUNDED: The appliance is equipped with a NEMA L14-20 four-prong locking, grounding plug to reduce the risk of potential shock hazards. It must be plugged into a properly grounded, independent 4-prong wall outlet.
- Page 7 WARNING, continued • Do not place anything on top of the appliance. Foreign objects or moisture could enter the appliance and result in electric shock or fire. • The appliance is designed only for temporary storage of food. Employ sanitary methods.
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Page 8: General Information
I. General Information A. Construction Thermostatic Expansion Valve Power Switch Condensate Pump Condenser Fan Motor Compressor Condenser Control Box Control Module Front Panel with Remote Display Module Door Lock Display Module/ Control Module with Integrated Power Cord Display Reservoir and Door Light Switch Condensate Pump... -
Page 9: Refrigeration Flow Chart
B. Refrigeration Flow Chart Condenser Condenser Fan High-Pressure Switch High-Side Drier Thermostatic Access Valve Expansion Valve Condensate Pump Condensate Pan Low-Side Compressor Access Valve Defrost Evaporator Fans Thermistor (2 or 3 depending on model) Evaporator Cabinet Thermistor Defrost Heater and Defrost Thermostat (freezer only) Reservoir... -
Page 10: Sequence Of Operation And Service Diagnosis
II. Sequence of Operation and Service Diagnosis A. Sequence of Operation Flow Charts 1. Refrigerator... -
Page 11: Freezer
2. Freezer... -
Page 12: Service Diagnosis
B. Service Diagnosis WARNING • The appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fire. • Risk of electric shock. Use extreme caution and exercise safe electrical practices. •... - Page 13 1. Factory Default Settings: a) Temperature Settings: Refrigerator: 36°F (2°C); Freezer: -4°F (-20°C). b) Temperature Display Scale: °F. For further details, see "II.C. Control Module Check" or "III. Controls and Adjustments." Note • When exposed to high temperatures, a high-temperature alarm "Hi" may occur at startup.
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Page 14: 1A. Refrigerator-Control Module With Remote Display Module
1a. Refrigerator-Control Module with Remote Display Module 7) Startup/Cool Down–EvapFM and MH energize. There is a slight delay, then Comp and ConFM energize. Cabinet temperature appears on DM. a) EvapFM Diagnosis: Confirm EvapFM energizes. If not, confirm doors are closed and DS engaged. - Page 15 8) Cool Down Achieved–CTh cools to 3°F (1.7°C) below setpoint. EvapFM and MH continue. Comp and ConFM de-energize. Diagnosis: Confirm Comp and ConFM de-energize. If not, and Comp and ConFM were energized longer than 2 min., check CTh status. See "II.D. Thermistor Check." If CTh ohm reading is in range and Comp and ConFM continue longer than 2 min., check for 115VAC at CM C1 (R) to neutral (W).
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Page 16: 1B. Refrigerator-Control Module With Integrated Display
1b. Refrigerator-Control Module with Integrated Display 7) Startup/Cool Down–There is a slight delay, cabinet temperature appears on display. Comp, ConFM, EvapFM, and MH energize. a) EvapFM Diagnosis: Confirm EvapFM energizes. If not, confirm doors are closed and DS engaged. Next, check for 115VAC at DSR #8 (LBU) to #7 neutral (W). If 115VAC is not present, check DS continuity. - Page 17 8) Cool Down Achieved–CTh cools to 3°F (1.7°C) below setpoint. EvapFM and MH continue. Comp and ConFM de-energize. Diagnosis: Confirm Comp and ConFM de-energize. If not, and Comp and ConFM were energized longer than 2 min., check CTh status. See "II.D. Thermistor Check." If CTh ohm reading is in range and Comp and ConFM continue longer than 2 min., check for 115VAC at CM C1 (R) to neutral (W).
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Page 18: 2A. Freezer-Control Module With Remote Display Module
2a. Freezer-Control Module with Remote Display Module 7) Startup/Cool Down–MH and PH energize. There is a slight delay, then Comp, ConFM, and EvapFM energize. Cabinet temperature appears on DM. Once DTh cools to 32°F (0°C), 4-hr. Comp cumulative run timer starts. a) MH and PH Diagnosis: Confirm MH and PH energize. Check for 115VAC at MH and PH. - Page 19 8) Cool Down Achieved–CTh cools to 3°F (1.7°C) below setpoint. EvapFM, MH, and PH continue. Comp and ConFM de-energize. Diagnosis: Confirm Comp and ConFM de-energize. If not, and Comp and ConFM were energized longer than 2 min., check CTh status. See "II.D. Thermistor Check." If CTh ohm reading is in range and Comp and ConFM continue longer than 2 min., check for 115VAC at CM C1 (R) to neutral (W).
- Page 20 Defrost Diagnosis: 1a) Temperature/Time-Initiated: Has DTh cooled to 32°F (0°C) or lower? Before proceeding, confirm DTh status. See "II.D. Thermistor Check." Has 4-hr. Comp cumulative run timer satisfied? (1) DM Diagnosis: Confirm "dEF" appears on DM. If not, replace CM and DM with HS kit.
- Page 21 (2) 8-min. EvapFM delay timer terminates: 5 min. after Comp and ConFM energize, confirm EvapFM energizes. If not, confirm doors are closed and DS engaged. Next, check for 115VAC at CM F6 (BK) to neutral (W). If 115VAC is not present, replace CM and DM with HS kit. If 115VAC is present, check for 115VAC at DSR #4 (DBU) to neutral (W).
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Page 22: 2B. Freezer-Control Module With Integrated Display
2b. Freezer-Control Module with Integrated Display 7) Startup/Cool Down– MH and PH energize. There is a slight delay, then Comp, ConFM, and EvapFM energize. Cabinet temperature appears on display. Once DTh cools to 32°F (0°C), 4-hr. Comp cumulative run timer starts. a) MH and PH Diagnosis: Confirm MH and PH energize. - Page 23 8) Cool Down Achieved–CTh cools to 3°F (1.7°C) below setpoint. EvapFM, MH, and PH continue. Comp and ConFM de-energize. Diagnosis: Confirm Comp and ConFM de-energize. If not, and Comp and ConFM were energized longer than 2 min., check CTh status. See "II.D. Thermistor Check." If CTh ohm reading is in proper range and Comp and ConFM continue longer than 2 min., check for 115VAC at CM C1 (R) to neutral (W).
- Page 24 Defrost Diagnosis: 1a) Temperature/Time-Initiation: Has DTh cooled to 32°F (0°C) or lower? Before proceeding, confirm DTh status. See "II.D. Thermistor Check." Has 4-hr. Comp cumulative run timer satisfied? (1) CM Diagnosis: Confirm defrost icon turns on, "dEF" is displayed, and Comp and EvapFM icons turn off.
- Page 25 (2) 7-min. EvapFM delay timer terminates: (note that the 7-min. EvapFM delay time is a maximum; if the defrost thermistor cools to 25°F (-3.9°C) before the 7-min. EvapFM delay timer terminates, EvapFM icon turns on and EvapFM energizes): 4 min. after Comp and ConFM energize, confirm EvapFM icon turns on and EvapFM energizes.
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Page 26: Control Module Check
C. Control Module Check 1. Control Module with Remote Display Module 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 27: Control Module With Integrated Display
10) Check that the components restart after defrost termination. Refrigerator: DTh reaches 40°F (4.4°C), Comp and ConFM (CM C1 (R)) energize. If not, check DTh status. See "II.D.Thermistor Check." If DTh ohm reading is in proper range, and Comp and ConFM do not energize, replace DM and CM with HS kit. Freezer: DTh reaches 59°F (15°C). -
Page 28: Thermistor Check
10) Check that the components restart after defrost termination. Refrigerator: DTh reaches 40°F (4.4°C), Comp and ConFM (CM C1 (R)) energize. If not, check DTh status. See "II.D.Thermistor Check." If DTh ohm reading is in proper range, and Comp and ConFM do not energize, replace CM. Freezer: DTh reaches 59°F (15°C). -
Page 29: Diagnostic Tables
E. Diagnostic Tables Check for correct appliance installation per the instruction manual and proper voltage per appliance nameplate. 1. 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 30: Evaporator Frozen Up
2. Evaporator Frozen Up Evaporator Frozen Up - Possible Cause 1. Evaporator a) Dirty. 2. Evaporator Fan Motor a) Fan blades binding. b) Defective. 3. Defrost Thermistor a) Out of position or defective. 4. Control Module a) Defective. 5. Compressor Relay a) Defective. -
Page 31: 3B. Defrost: Control Module With Integrated Display
3b. Defrost: Control Module with Integrated Display Refrigerator Defrost Fails to Initiate - Possible Cause 1. Defrost Thermistor (Confirm a) Defrost initiation temperature 8.6°F (-13°C) not achieved. See "1. Not DTh status. See "II.D. Thermistor Cooling." Check.") b) Out of position or defective. 2. -
Page 32: Controls And Adjustments
III. Controls and Adjustments A. Control and Display Modules When the power switch is moved to the "ON" position there is a slight delay, then the current cabinet temperature is displayed. From the display module, the cabinet setpoint and temperature display scale can be changed. Note: When exposed to high temperatures, a high-temperature alarm "Hi"... -
Page 33: B) Control Module With Remote Display Module Connections
b) Control Module with Remote Display Module Connections All models are pretested and factory set NOTICE • The control module is fragile, handle very carefully. • Do not change wiring and connections. Never misconnect terminals. • Do not short out power supply to test for voltage. Freezer Control Module Refrigerator Control Module To Display Module... -
Page 34: Control Module With Integrated Display
2. Control Module with Integrated Display All models are pretested and factory set NOTICE • The control module is fragile, handle very carefully. • Do not change wiring and connections. Never misconnect terminals. • Do not short out power supply to test for voltage. a) Display Icons Control Module Icons Icon... -
Page 35: C) Control Module With Integrated Display Connections
c) Control Module with Integrated Display Connections Cabinet Thermistor Defrost Thermistor Cabinet Thermistor Defrost Thermistor C1 Compressor (R) F5 Evaporator Fan Motor (Y) (Freezer) L2 Power Supply (BK) H4 Defrost Heater (O) N3 Neutral (W) (Freezer) -
Page 36: Temperature
B. Temperature The temperature default scale is °F, but it can be changed to read °C. To change, see "III.B.3. Changing the Temperature Display Scale (°F or °C)" below. 1. Default Settings a) Temperature Setting: Refrigerator: 36°F (2°C). Freezer: -4°F (-20°C). b) Temperature Display Scale: °F. -
Page 37: B) Control Module With Integrated Display
b) Control Module with Integrated Display To change the temperature display scale, follow the steps below. 1) Press and hold both the up and down buttons for 5 sec. "PAS" appears briefly in the display, then "000" appears. 2) Press the up button to change the display to "001". 3) Press the SC button. -
Page 38: Alarm Safeties
D. Alarm Safeties Alarm signals are designed to protect the appliance and food product. These alarms give information or warnings in the event the appliance is operating out of acceptable parameters. Should one of the alarms occur, follow the instructions in the table below to address the alarm. -
Page 39: Control Module With Integrated Display
2. Control Module with Integrated Display Alarm Signals Alarm Code Problem Corrective Action/Reset Details Cabinet Thermistor Malfunction Alarm Beeps for 10 sec., then silent for 50 sec.. To silence the alarm, press and release the up button. Cabinet thermistor has failed. Appliance cycles 5 min. -
Page 40: Safety Devices
Note: Time may vary with compressor protector or high-pressure switch activation. 3. High-Pressure Switch If pressure on the high-side of the appliance exceeds Hoshizaki specifications, the high-pressure switch activates and interrupts the compressor circuit, de-energizing the compressor until the pressure returns to an acceptable level. -
Page 41: Replacement Of Components
IV. Replacement of Components WARNING • The appliance should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fire. • Move the power switch to the "OFF" position, then unplug the appliance from the electrical outlet before servicing. -
Page 42: Brazing
2. Brazing WARNING • R-134a and R-404A themselves are not flammable at atmospheric pressure and temperatures up to 176°F (80°C). • R-134a and R-404A themselves are not explosive or poisonous. However, when exposed to high temperatures (open flames), R-134a and R-404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous. - Page 43 5) Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder. Remember to loosen the connection and purge the air from the hose. See the nameplate for the required refrigerant charge. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 (latest edition) be used.
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Page 44: Important Notes For Component Replacement
To change the door swing, an HS kit from your local Hoshizaki distributor is required. See the table below. NOTICE! Improper installation of the HS kit may result in the doors not closing completely and/or the gaskets not sealing correctly. -
Page 45: Maintenance
V. Maintenance WARNING • Move the power switch to the "OFF" position and unplug the appliance before performing maintenance to prevent electric shock or injury by moving parts. To reduce the risk of electric shock, do not touch the power switch or plug with damp hands. -
Page 46: Preparing The Appliance For Periods Of Non-Use
VI. 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 or power switch with damp hands. -
Page 47: Disposal
VII. Disposal WARNING When preparing the appliance for disposal, remove the door to reduce the risk of children getting trapped. Leave the shelves in place so that children may not easily climb inside. The appliance contains refrigerant and must be disposed of in accordance with applicable national, state, and local codes and regulations. -
Page 48: Technical Information
VIII. Technical Information A. Electrical and Refrigerant Data Design Pressure (PSIG) Refrigerant (oz.) AC Supply Model Voltage Amperes HIGH 134a 404A CR1B-FG/FS/HS CF1B-FG/FS/HS 115/60/1 CR2B-FG/FS/HS CF2B-FG/FS/HS 1-Section CR3B-FS/HS 115/60/1 2-Section 1-Section CF3B-FS/HS 208-230/115/60/1 2-Section See the nameplate for electrical and refrigerant data. The nameplate is located inside the cabinet. -
Page 49: Wiring Diagrams
B. Wiring Diagrams 1a. CR1B-FG Auxiliary Code A-5 to B-5(A) Control Module with Remote Display Module * High-Pressure Switch Cut-out 270±10 PSIG Cut-in 190±20 PSIG... - Page 50 1b. CR1B-FG Auxiliary Code B-5(B) and Later Control Module with Integrated Display * High-Pressure Switch Cut-out 300±10 PSIG Cut-in 190±20 PSIG...
- Page 51 2a. CR1B-FS/HS, CR3B-FS/HS Auxiliary Code V-5 to B-5(A) Control Module with Remote Display Module * High-Pressure Switch Cut-out 270±10 PSIG Cut-in 190±20 PSIG...
- Page 52 2b. CR1B-FS/HS, CR3B-FS/HS Auxiliary Code B-5(B) and Later Control Module with Integrated Display * High-Pressure Switch Cut-out 300±10 PSIG Cut-in 190±20 PSIG...
- Page 53 3a. CR2B-FG Auxiliary Code A-5 Control Module with Remote Display Module * High-Pressure Switch Cut-out 270±10 PSIG Cut-in 190±20 PSIG...
- Page 54 3b. CR2B-FG Auxiliary Code B-6 and Later Control Module with Integrated Display * High-Pressure Switch Cut-out 300±10 PSIG Cut-in 190±20 PSIG...
- Page 55 4a. CR2B-FS and CR3B-FS Auxiliary Code V-5 to B-5(B) CR2B-HS Auxiliary Code A-5 to B-5(A), CR3B-HS Auxiliary Code A-5 to B-5(C) Control Module with Remote Display Module * High-Pressure Switch Cut-out 270±10 PSIG Cut-in 190±20 PSIG...
- Page 56 4b. CR2B-FS and CR3B-FS Auxiliary Code B-5(C) and Later, CR2B-HS Auxiliary Code A-5 to B-5(B) and Later, CR3B-HS Auxiliary Code B-5(D) and Later Control Module with Integrated Display * High-Pressure Switch Cut-out 300±10 PSIG Cut-in 190±20 PSIG...
- Page 57 5a. CF1B-FG Auxiliary Code B-5(C) and Earlier Control Module with Remote Display Module ** Defrost Thermostat * High-Pressure Switch ° ° ° ° Cut-out F±5 F (49 C±3 Cut-out 490±10 PSIG ° ° ° ° Cut-in F±5 F (21 C±3 Cut-in 370±20 PSIG...
- Page 58 5b. CF1B-FG Auxiliary Code B-5(D) and Later Control Module with Integrated Display ** Defrost Thermostat * High-Pressure Switch ° ° ° ° Cut-out F±5 F (49 C±3 Cut-out 490±10 PSIG ° ° ° ° Cut-in F±5 F (21 C±3 Cut-in 370±20 PSIG...
- Page 59 6a. CF1B-FS and CF3B-FS (one section side) Auxiliary Code A-5 to B-5(B), CF1B-HS Auxiliary Code A-5 to B-5(A), CF3B-HS (one section side) Auxiliary Code B-6 and Later Control Module with Remote Display Module A-5 (G) and later ** Defrost Thermostat * High-Pressure Switch °...
- Page 60 6b. CF1B-FS and CF3B-FS (one section side) Auxiliary Code A-5 to B-5(B), CF1B-HS Auxiliary Code A-5 to B-5(A), CF3B-HS (one section side) Auxiliary Code B-6 and Later Control Module with Integrated Display ** Defrost Thermostat * High-Pressure Switch ° ° °...
- Page 61 7a. CF2B-FS and CF3B-FS (two section side) Auxiliary Code A-5 to B-5(A), CF2B-HS Auxiliary Code A-5 to B-5 Control Module with Remote Display Module A-5 (G) and later ** Defrost Thermostat * High-Pressure Switch ° ° ° ° Cut-out F±5 F (49 C±3 Cut-out...
- Page 62 7b. CF2B-FS and CF3B-FS (two section side) Auxiliary Code B-5(B) and Later, CF2B-HS and CF3B-HS (two section side) Auxiliary Code B-6 and Later Control Module with Integrated Display ** Defrost Thermostat * High-Pressure Switch ° ° ° ° Cut-out F±5 F (49 C±3 Cut-out...
- Page 63 8. CR3B-FS/HS Receptacle Box Connection Note: Only the top receptacles have power. 9. CF3B-FS/HS Receptacle Box Connection Note: Only the top receptacles have power.