Related Manuals for Hoshizaki Reach-In S-Series
Summary of Contents for Hoshizaki Reach-In S-Series
- Page 1 Hoshizaki Hoshizaki America, Inc. Commercial Series Refrigerated Kitchen Equipment Models Reach-In S-Series SERVICE MANUAL “A Superior Degree of Reliability” www.hoshizaki.com Number: 73207 Issued: 8-3-2015 Revised: 11-20-2015...
- 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: 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 5 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 6 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 7: General Information
I. General Information A. Construction Thermostatic Expansion Valve Power Switch Condenser Fan Motor Compressor Condenser Control Box Front Panel Door Lock Control Module Power Cord Light Switch Door (glass door models only) Light Door Switch Door Gasket • Evaporator • Cabinet Thermistor •... -
Page 8: Refrigeration Flow Chart
B. Refrigeration Flow Chart Condenser Condenser Fan High-Pressure Switch Drier Thermostatic Expansion Valve Compressor Defrost Evaporator Fans Thermistor (quantity depends on model) Evaporator Cabinet Thermistor Defrost Heater and Defrost Thermostat (freezer only) Condensate Pan... -
Page 9: Sequence Of Operation And Service Diagnosis
II. Sequence of Operation and Service Diagnosis A. Sequence of Operation Flow Charts 1. Refrigerator... -
Page 10: Freezer
2. Freezer... -
Page 11: 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 12: Refrigerator
3) Remove the control box cover. 4) Plug the appliance back into the electrical outlet. 5) Move the power switch to the "ON" position. 6) Confirm 115VAC at the power switch. On 3-section models, also confirm proper supply voltage at the receptacle box (115VAC for refrigerator/208-230VAC for freezer). 1. - Page 13 is energized but Comp is not, give time for Comp internal protector to cool and reset. Next, check Comp start capacitor, start relay, and Comp motor windings. If Comp does not start, replace Comp. If ConFM is not energized, check ConFM fan blades for binding and motor winding continuity.
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Page 14: Freezer
2. Freezer 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. Check for 115VAC at MH and PH. - Page 15 e) Comp and ConFM Diagnosis: Confirm Comp and ConFM energize. If not, check for 115VAC at CM C1 (R or V) to neutral (W). If 115VAC is not present, check CTh status. See "II.D.Thermistor Check." If CTh ohm reading is in proper range, replace CM.
- Page 16 2a) Temperature/Time Initiated Defrost-Termination: (1) DTh warms to 59°F (15°C). Defrost icon, "dEF," MH, and PH continue. DH and DrH de-energize. 3-min. Comp delay timer starts, 7-min. EvapFM delay timer starts, and 18-min. temperature display delay timer starts. (2) 3-min. Comp delay timer terminates. "dEF," MH, and PH continue. Defrost icon turns off and Comp icon turns on and Comp and ConFM energize.
- Page 17 (3) Comp and ConFM Diagnosis: Confirm Comp and ConFM de-energize. If not, check for 115VAC at CM C1 (R or V) to neutral (W). If 115VAC is present, replace CM. If 115VAC is not present and Comp and ConFM continue, check CR #6 (R) to neutral (W).
- Page 18 2b) Manually Initiated Defrost-Termination: Has DTh warmed to 59°F (15°C)? If not yet confirmed, confirm DTh status. See "II.D. Thermistor Check." If DTh is in proper range, DH de-energizes and 2 delay timers start. If DTh has not warmed to 59°F (15°C), check DT and DH continuity.
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Page 19: 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 20: Thermistor Check
D. Thermistor Check The cabinet thermistor is used for cabinet temperature control and the defrost thermistor is used for defrost cycle initiation and termination. Thermistor resistance varies depending on temperature. The control module monitors the thermistors to control system operation. No adjustment is required. In the event the cabinet thermistor reading is out of range (E1 alarm), the compressor operates on a fixed time basis of 5-min. -
Page 21: 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 22: 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 23: Controls And Adjustments
III. Controls and Adjustments A. Control Module All models are pretested and factory set 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 24: Control Module Connections
3. Control Module Connections Cabinet Thermistor Defrost Thermistor Auxiliary Code XX and Later Auxiliary Code XX and Earlier Cabinet Defrost Cabinet Defrost Thermistor Thermistor Thermistor Thermistor C1 Compressor (R) C1 Compressor (V) L2 Power Supply (BK) L2 Power Supply (BK) N3 Neutral (W) N3 Neutral (W) H4 Defrost Heater (O) -
Page 25: 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 26: Defrost
C. Defrost To initiate a manual defrost, press the manual defrost button briefly. The defrost icon and "dEF" appear in the display. 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. -
Page 27: 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 28: 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 29 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 30 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 31: 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 32: 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 33: 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 34: 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 35: Technical Information
VIII. Technical Information A. Electrical and Refrigerant Data Design Pressure (PSIG) Refrigerant (oz.) AC Supply Model Voltage Amperes HIGH 134a 404A CR1S-FGY(-FS)(-FSL)(-HS)(-HSL) CF1S-FGY(-FS)(-FSL)(-HS)(-HSL) CR2S-FS(-HS) 115/60/1 CR2S-FGY CF2S-FS(-HS) CF2S-FGY 1-Section CR3S-FS(-HS) 115/60/1 2-Section 1-Section CF3S-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 36: Wiring Diagrams
B. Wiring Diagrams 1. CR1S-FS(-FSL)(-HS)(-HSL) Auxiliary Code E-5 and Earlier CR1S-FS(-FSL) 115/60/1 (BK) POWER SWITCH DEFROST CABINET THERM THERM (BR) (BR) (BU) (BU) CONTROL DOOR SWITCH MODULE (DOOR OPEN) CABINET LIGHT EVAPORATOR DOOR SWITCH RELAY (BK) (BK) EVAPORATOR (BK) (BK) START CAP. - Page 37 2. CR2S-FS(-HS) Auxiliary Code E-5 and Earlier CR2S-FS(-HS) 115/60/1 POWER SWITCH CABINET DEFROST THERM THERM (BR) (BR) (BU) (BU) DOOR SWITCH DOOR SWITCH (DOOR OPEN) (DOOR OPEN) CONTROL MODULE CABINET LIGHT EVAPORATOR DOOR SWITCH CABINET RELAY LIGHT (BK) (BK) EVAPORATOR (BK) (BK) EVAPORATOR...
- Page 38 3. CR1S-FGY(-FS)(-FSL)(-HS)(-HSL), CR2S-FGY(-FS)(-HS), and CR3S-FS(-HS) Auxiliary Code E-6 and Later CR1S-FGY CR1S-FS CR1S-HS CR2S-FGY CR2S-FS CR2S-HS CR_S-FGY CR2S-FGY CR2S-FGY(-FS)(-HS) CR_S-FS(-HS) CR2S-FS(-HS) CR2S-FGY(-FS)(-HS) INTERNAL PROTECTOR * High-Pressure Switch Cut-out 300±10 PSIG Cut-in 190±20 PSIG...
- Page 39 4. CF1S-FS(-FSL)(-HS)(-HSL) Auxiliary Code E-5 and Earlier ** 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 40 5. CF1S-FS(-FSL)(-HS)(-HSL) Auxiliary Code E-6 and Later CF1S-HS CF1S-FGY CF1S-FS(-HS) INTERNAL PROTECTOR ** 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 41 6. CF2S-FS(-HS) Auxiliary Code E-5 and Earlier ** 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 42 7. CF2S-FS(-FSL)(-HS)(-HSL) Auxiliary Code E-6 and Later CF2S-HS CF2S-FGY CF2S-FS(-HS) EXTERNAL PROTECTOR ** 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 43 8. CR3S-FS/HS Receptacle Box Connection Power Cord Receptacle Box Top Receptacle Top Receptacle To 1-Section System To 2-Section System Note: Only the top receptacles have power. Power Cord Receptacle Box Top Receptacle Top Receptacle To 2-Section System To 1-Section System Note: Only the top receptacles have power.