Hoshizaki KM-1601SAH/3 Service Manual
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Hoshizaki KM-1601SAH/3 Service Manual

Hoshizaki KM-1601SAH/3 Service Manual

Stackable crescent cuber
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Hoshizaki
Hoshizaki America, Inc.
"A Superior Degree
of Reliability"
www.hoshizaki.com
Stackable Crescent Cuber
Models
KM-1601SAH/3
KM-1601SWH/3
KM-1601SRH/3
SERVICE MANUAL
™
Number: 73145
Issued: 10-31-2006
Revised: 6-24-2011

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Summary of Contents for Hoshizaki KM-1601SAH/3

  • Page 1 Hoshizaki America, Inc. “A Superior Degree of Reliability” www.hoshizaki.com Stackable Crescent Cuber Models KM-1601SAH/3 KM-1601SWH/3 KM-1601SRH/3 SERVICE MANUAL ™ Number: 73145 Issued: 10-31-2006 Revised: 6-24-2011...
  • Page 2 Hoshizaki provides this manual primarily to assist qualified service technicians in the service and maintenance of the icemaker. Should the reader have any questions or concerns which have not been satisfactorily addressed, please call, write, or send an e-mail message to the Hoshizaki Technical Support Department for assistance. HOSHIZAKI AMERICA, INC.

  • Page 3: Table Of Contents

    Freeze Timer (S4 dip switch 9 & 10) ... 35 h) Float Switch Selector (S5 dip switch 1), KM-1601SAH/3 "G" Control Board ... 35 i) Refill Counter (S5 dip switch 2 through 5), KM-1601SAH/3 "G" Control Board . 35 D. Control Switch ... 36 III.
  • Page 4 B. Wiring Diagrams ... 40 1. KM-1601SAH (air-cooled)... 40 2. KM-1601SAH3 (air-cooled) ... 41 3. KM-1601SWH (water-cooled), KM-1601SRH (remote air-cooled) ... 42 4. KM-1601SWH3 (water-cooled), KM-1601SRH3 (remote air-cooled) ... 43 C. Performance Data ... 44 IV. Service Diagnosis ... 54 A.

  • 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 unit. WARNING Indicates a hazardous situation which could result in death or serious injury. CAUTION Indicates a situation which could result in damage to the unit.

  • Page 6: Specifications

    I. Specifications A. Icemaker 1. KM-1601SAH (air-cooled) AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC &...
  • Page 7 2. KM-1601SAH3 (air-cooled) AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) WATER gal./24HR (gal./100 lbs.)
  • Page 8 3. KM-1601SWH (water-cooled) AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) WATER gal./24HR (gal./100 lbs.)
  • Page 9 4. KM-1601SWH3 (water-cooled) AC SUPPLY VOLTAGE AMPERAGE MINIMUM CIRCUIT AMPACITY MAXIMUM FUSE SIZE APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day ( kg/day ) Reference without *marks SHAPE OF ICE ICE PRODUCTION PER CYCLE APPROXIMATE STORAGE CAPACITY ELECTRIC & WATER CONSUMPTION ELECTRIC W (kWH/100 lbs.) WATER gal./24HR (gal./100 lbs.)
  • Page 10 5. KM-1601SRH with URC-21F (remote air-cooled) (auxiliary codes: R-0; R-1; some S-1) This data applies to units with an 8 l/min water valve. The 8 l/min water valve is part number 3U0111-02 and has J248-032 stamped on the side of the valve facing the rear of the unit.
  • Page 11 6. KM-1601SRH with URC-21F (remote air-cooled) (auxiliary codes: some S-1; S-2 and later) This data applies to units with a 15 l/min or 11 l/min water valve. The 15 l/min water valve is part number 3U0111-01 and has J248-030 stamped on the side of the valve facing the rear of the unit.
  • Page 12 7. KM-1601SRH with URC-22F (remote air-cooled) (auxiliary codes: S-2 and later) This data applies to units with an 11 l/min water valve. The 11 l/min water valve is either part number 4A1176-04 or 4A5251-04 and has the part number stamped on the side of the valve facing the front of the unit.
  • Page 13 8. KM-1601SRH3 with URC-21F (remote air-cooled) (auxiliary codes: R-0; R-1; some S-1) This data applies to units with an 8 l/min water valve. The 8 l/min water valve is part number 3U0111-02 and has J248-032 stamped on the side of the valve facing the rear of the unit.
  • Page 14 9. KM-1601SRH3 with URC-21F (remote air-cooled) (auxiliary codes: some S-1; S-2 and later) This data applies to units with a 15 l/min or 11 l/min water valve. The 15 l/min water valve is part number 3U0111-01 and has J248-030 stamped on the side of the valve facing the rear of the unit.
  • Page 15 10. KM-1601SRH3 with URC-22F (remote air-cooled) (auxiliary codes: S-2 and later) This data applies to units with an 11 l/min water valve. The 11 l/min water valve is either part number 4A1176-04 or 4A5251-04 and has the part number stamped on the side of the valve facing the front of the unit.

  • Page 16: Condenser Unit

    B. Condenser Unit 1. URC-21F AC SUPPLY VOLTAGE FAN MOTOR EXTERIOR DIMENSIONS (WxDxH) DIMENSIONS INCLUDING LEGS (WxDxH) EXTERIOR FINISH WEIGHT CONNECTIONS - ELECTRIC - REFRIGERANT CONDENSER FAN MOTOR PROTECTION REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE OPERATING CONDITIONS ACCESSORIES -SUPPLIED Note: We reserve the right to make changes in specifications and design without prior notice.
  • Page 17 2. URC-22F AC SUPPLY VOLTAGE FAN MOTOR EXTERIOR DIMENSIONS (WxDxH) DIMENSIONS INCLUDING LEGS (WxDxH) EXTERIOR FINISH WEIGHT CONNECTIONS - ELECTRIC - REFRIGERANT CONDENSER FAN MOTOR PROTECTION REFRIGERANT CONTROL REFRIGERANT CHARGE DESIGN PRESSURE OPERATING CONDITIONS ACCESSORIES -SUPPLIED Note: We reserve the right to make changes in specifications and design without prior notice.

  • Page 18: General Information

    II. General Information A. Construction 1. KM-1601SAH/3 (air-cooled) Inlet Water Valve (WV) Evaporator Assembly Cube Guides Pump-Out Check Valve Water Pump (PM) Float Switch (F/S) Cleaning Valve Compressor (Comp) Extension Bracket Separators Low-Side Service Valve Spray Tubes High-Side Service Valve...
  • Page 19 2. KM-1601SWH/3 (water-cooled) Inlet Water Valve (WV) Evaporator Assembly Cube Guides Pump-Out Check Valve Water Pump (PM) Float Switch (F/S) Cleaning Valve Compressor (Comp) Extension Bracket Spray Tubes Low-Side Service Valve Separators High-Side Service Valve Control Switch Bin Control Thermostat (TBC) Thermostatic Expansion Valves (TXV)
  • Page 20 3. KM-1601SRH/3 (remote air-cooled) Inlet Water Valve (WV) Evaporator Assembly Cleaning Valve Pump-Out Check Valve Water Pump (PM) Float Switch (F/S) Compressor (Comp) Extension Bracket Bin Control Thermostat (TBC) Spray Tubes Low-Side Service Valve Separators High-Side Liquid Service Valve High-Side Vapor Service Valve Control Switch Capacitor Box (KM-1601SRH)

  • Page 21: Sequence Of Operation

    1. Sequence Cycles and Shutdown a) KM-1601SAH/3 "G" Control Board KM-1601SAH/3 utilize a "G" control board and TBC. For KM-1601SAH/3 operation, the K4 jumper (4A4883G01) must be in place on the control board RED K4 connector or the unit will not operate.
  • Page 22 continues until F/S opens and terminates the cycle. There is a 15 second delay before CB acknowledges an open F/S. (4) Pump-Out Cycle LEDs 1, 3, and 2 are on. LED 4 is on when S4 dip switch 3 & 4 are set to 3 off and 4 on. For details, see "II.C.3.c) Pump-Out Timer (S4 dip switch 3 &...

  • Page 23: B) Km-1601Swh/3 And Km-1601Srh/3 "E" Control Board

    b) KM-1601SWH/3 and KM-1601SRH/3 "E" Control Board KM-1601SWH/3 and KM-1601SRH/3 utilize an "E" control board and TBC. The steps in the sequence are as outlined below. When power is supplied, CB red "POWER OK" LED turns on. There is a 5-second delay before startup. Note that the order of the component LEDs from the outer edge of CB is 1, 4, 3, 2.
  • Page 24 (5) Harvest Cycle Same as the initial harvest cycle. See "II.B.1.b)(2) Initial Harvest Cycle." Note: Unit continues to cycle until TBC is satisfied or power is turned off. The unit always restarts at the 1-minute fill cycle. (6) Shutdown When ice contacts TBC bulb (TBC switch open), TBC shuts down the unit within 10 seconds.

  • Page 25: Sequence Flow Chart

    2. Sequence Flow Chart a) KM-1601SAH/3 "G" Control Board...

  • Page 26: B) Km-1601Swh/3 And Km-1601Srh/3 "E" Control Board

    b) KM-1601SWH/3 and KM-1601SRH/3 "E" Control Board...

  • Page 27: Control Board

    C. Control Board • A Hoshizaki exclusive control board is employed in Hoshizaki Stackable Crescent Cubers. • All models are pretested and factory set. • For a control board check procedure, see "IV.B. Control Board Check." 1. The control board is fragile; handle very carefully.

  • Page 28: Control Board Layout

    1. Control Board Layout a) KM-1601SAH/3 "G" Control Board • Bin Control Switch • "ALARM RESET" Button Closed LED (green) (on continuously in thermostatic bin control application) • Bin Control Switch Open LED (yellow) (mechanical bin control application only) • Part Number •...

  • Page 29: B) Km-1601Swh/3 And Km-1601Srh/3 "E" Control Board

    b) KM-1601SWH/3 and KM-1601SRH/3 "E" Control Board • "ALARM RESET" Button • Harvest Timer LED (orange) • Freeze Timer LED (yellow) • Part Number • Alarm Buzzer • Power LED (red) (lights when 10.5VAC is supplied to K2 connector) • Relay LEDs (green) (indicate which relays and K1 connector pins are...

  • Page 30: Led Lights And Audible Alarm Safeties

    2. LED Lights and Audible Alarm Safeties a) KM-1601SAH/3 "G" Control Board At startup, a 5-second delay occurs while the control board conducts an internal timer check. A beep occurs when the control switch is moved to the "ICE" position.

  • Page 31: B) Km-1601Swh/3 And Km-1601Srh/3 "E" Control Board

    b) KM-1601SWH/3 and KM-1601SRH/3 "E" Control Board At startup, a 5-second delay occurs while the control board conducts an internal timer check. A beep occurs when power is turned off. The red LED indicates proper control voltage and remains on unless a control voltage problem occurs. The green LEDs 1 through 4 energize and sequence from initial startup as listed in the table below.

  • Page 32: Controls And Adjustments

    S4 Dip Switch All Models Freeze Timer (9 & 10) Factory Use (8) Harvest Pump Timer (7) KM-1601SAH/3 "G" Control Board Bin Control Selector (7) KM-1601SWH/3 & KM-1601SRH/3 Pump-Out Frequency Control (5 & 6) Pump-Out Timer (3 & 4) Harvest Timer (1 & 2)

  • Page 33: B) Harvest Timer (S4 Dip Switch 1 & 2)

    3 & 4)." c) Pump-Out Timer (S4 dip switch 3 & 4) Do not adjust S4 dip switch 3 off and S4 dip switch 4 on for KM-1601SAH/3. Otherwise, pump motor does not rotate in the pump-out direction. When a pump-out is called for, the pump motor stops after the preceding freeze cycle.

  • Page 34: D) Pump-Out Frequency Control (S4 Dip Switch 5 & 6)

    2, 5, or 10 cycles. Timing of the first pump-out is dependent on the control board. For KM-1601SAH/3 ("G" control board), first pump-out is dependent on S4 dip switch 5 & 6. See the table below.

  • Page 35: F) Factory Use (S4 Dip Switch 8)

    Factory set. Do not adjust. This must be left in the factory default position or the unit will not operate correctly. S5 dip switch 1 allows for single or double float switch applications. The KM-1601SAH/3 use a single float switch.

  • Page 36: Control Switch

    D. Control Switch The control switch has three positions: "OFF" for power off, "ICE" for icemaking, and "WASH" to activate the water pump when cleaning and sanitizing.

  • Page 37: Technical Information

    III. Technical Information A. Water Circuit and Refrigeration Circuit 1. KM-1601SAH/3 (air-cooled)

  • Page 38: Km-1601Swh/3 (Water-Cooled)

    2. KM-1601SWH/3 (water-cooled)

  • Page 39: Km-1601Srh/3 (Remote Air-Cooled)

    3. KM-1601SRH/3 (remote air-cooled)

  • Page 40: Wiring Diagrams

    B. Wiring Diagrams 1. KM-1601SAH (air-cooled)

  • Page 41: Km-1601Sah3 (Air-Cooled)

    2. KM-1601SAH3 (air-cooled)

  • Page 42: Km-1601Swh (Water-Cooled), Km-1601Srh (Remote Air-Cooled)

    3. KM-1601SWH (water-cooled), KM-1601SRH (remote air-cooled)

  • Page 43: Km-1601Swh3 (Water-Cooled), Km-1601Srh3 (Remote Air-Cooled)

    4. KM-1601SWH3 (water-cooled), KM-1601SRH3 (remote air-cooled)

  • Page 44: Performance Data

    C. Performance Data 1. KM-1601SAH (air-cooled) APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day kg./day APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal./day /day FREEZING CYCLE TIME min. HARVEST CYCLE TIME min. HEAD PRESSURE PSIG kg/cm SUCTION PRESSURE PSIG kg/cm TOTAL HEAT OF REJECTION FROM CONDENSER...
  • Page 45 2. KM-1601SAH3 (air-cooled) APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day kg./day APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal./day /day FREEZING CYCLE TIME min. HARVEST CYCLE TIME min. HEAD PRESSURE PSIG kg/cm SUCTION PRESSURE PSIG kg/cm TOTAL HEAT OF REJECTION FROM CONDENSER Note: 1.
  • Page 46 3. KM-1601SWH (water-cooled) APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day kg./day APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal./day /day FREEZING CYCLE TIME min. HARVEST CYCLE TIME min. HEAD PRESSURE PSIG kg/cm SUCTION PRESSURE PSIG kg/cm TOTAL HEAT OF REJECTION FROM CONDENSER TOTAL HEAT OF REJECTION FROM COMPRESSOR WATER FLOW FOR CONDENSER PRESSURE DROP OF COOLING WATER LINE...
  • Page 47 4. KM-1601SWH3 (water-cooled) APPROXIMATE ICE PRODUCTION PER 24 HR. lbs./day kg./day APPROXIMATE ELECTRIC CONSUMPTION watts APPROXIMATE WATER CONSUMPTION PER 24 HR. gal./day /day FREEZING CYCLE TIME min. HARVEST CYCLE TIME min. HEAD PRESSURE PSIG kg/cm SUCTION PRESSURE PSIG kg/cm TOTAL HEAT OF REJECTION FROM CONDENSER TOTAL HEAT OF REJECTION FROM COMPRESSOR WATER FLOW FOR CONDENSER PRESSURE DROP OF COOLING WATER LINE...
  • Page 48 5. KM-1601SRH with URC-21F (remote air-cooled) (auxiliary codes: R-0; R-1; some S-1) This data applies to units with an 8 l/min water valve. The 8 l/min water valve is part number 3U0111-02 and has J248-032 stamped on the side of the valve facing the rear of the unit.
  • Page 49 6. KM-1601SRH with URC-21F (remote air-cooled) (auxiliary codes: some S-1; S-2 and later) This data applies to units with a 15 l/min or 11 l/min water valve. The 15 l/min water valve is part number 3U0111-01 and has J248-030 stamped on the side of the valve facing the rear of the unit.
  • Page 50 7. KM-1601SRH with URC-22F (remote air-cooled) (auxiliary codes: S-2 and later) This data applies to units with an 11 l/min water valve. The 11 l/min water valve is either part number 4A1176-04 or 4A5251-04 and has the part number stamped on the side of the valve facing the front of the unit.
  • Page 51 8. KM-1601SRH3 with URC-21F (remote air-cooled) (auxiliary codes: R-0; R-1; some S-1) This data applies to units with an 8 l/min water valve. The 8 l/min water valve is part number 3U0111-02 and has J248-032 stamped on the side of the valve facing the rear of the unit.
  • Page 52 9. KM-1601SRH3 with URC-21F (remote air-cooled) (auxiliary codes: some S-1; S-2 and later) This data applies to units with a 15 l/min or 11 l/min water valve. The 15 l/min water valve is part number 3U0111-01 and has J248-030 stamped on the side of the valve facing the rear of the unit.
  • Page 53 10. KM-1601SRH3 with URC-22F (remote air-cooled) (auxiliary codes: S-2 and later) This data applies to units with an 11 l/min water valve. The 11 l/min water valve is either part number 4A1176-04 or 4A5251-04 and has the part number stamped on the side of the valve facing the front of the unit.

  • Page 54: Service Diagnosis

    Check CB using the steps in "IV.B. Control Board Check." Check the dip switch settings to assure that S4 dip switch 3, 4, 7, 8, 9, 10 and S5 (KM-1601SAH/3 "G" CB) dip switch 1 through 5 are in the factory default position. S4 dip switch 1, 2, 5, 6 are cleaning adjustments and the settings are flexible.
  • Page 55 4) Initial Harvest Cycle – LEDs 1, 4, and 2 are on. WV and X11 relay (KM-1601SAH/3) remain energized, Comp, FM/FMR, HGV, and X10 relay (KM-1601SAH/3) energize. CB monitors the warming of the evaporator via the thermistor located on the suction line.
  • Page 56 6) Pump-Out Cycle – (10/20 second pump-out) – LEDs 1, 3, and 2 are on. LED 4 is on when S4 dip switch 3 & 4 are set to 3 off and 4 on. CAUTION! for KM-1601SAH/3: Do not adjust S4 dip switch 3 & 4 to 3 off and 4 on. Adjustment to this position on this model prevents the pump motor from rotating in the pump-out direction.
  • Page 57 Diagnosis: KM-1601SAH/3 "G" CB: If PM does not reverse, check to see if S4 and S5 dip switch settings are in the factory default position. If S4 dip switch 3 and 4 are adjusted to 3 off and 4 on, WV and harvest pump timer relays energize. Once these relays energize, PM rotates in the freeze cycle rotation.

  • Page 58: Control Board Check

    1) Check the dip switch settings to assure that S4 dip switch 3, 4, 7, 8, 9, 10 and S5 (KM-1601SAH/3 "G" CB) dip switch 1 through 5 are in the factory default position. S4 dip switch 1, 2, 5, 6 are cleaning adjustments and the settings are flexible. For factory default settings, see "II.C.3.a) Default Dip Switch Settings."...

  • Page 59: Bin Control Check

    C. Bin Control Check To check TBC, follow the steps below. When the ambient temperature is below 45°F (7°C), TBC switch opens and shuts down the icemaker even if the ice storage bin is empty. When TBC is set in the prohibited range, the icemaker operates continuously even if the ice storage bin is filled with ice.

  • Page 60: Float Switch Check And Cleaning

    D. Float Switch Check and Cleaning F/S is used to determine that there is sufficient water in the water tank after the 1-minute fill cycle and after each harvest cycle. F/S is also used to determine that the appropriate volume of water has been converted into ice before switching out of the freeze cycle. No adjustment is required.

  • Page 61: Float Switch Cleaning

    7) Wipe down F/S assembly's housing, shaft, float, and retainer rod with a mixture of 1 part Hoshizaki "Scale Away" and 25 parts warm water. Clean the inside of the rubber boot and hose with cleaning solution. Rinse the parts thoroughly with clean water.

  • Page 62: Thermistor Check

    E. Thermistor Check To check thermistor resistance, follow the steps below. 1) Turn off the power supply. 2) Remove the front panel, then move the control switch to the "OFF" position. 3) Remove the control box cover. 4) Remove the thermistor. 5) Immerse the thermistor sensor portion in a glass containing ice and water for 2 or 3 minutes.

  • Page 63: Diagnostic Charts

    "IV.B. Control Board Check." Check the dip switch settings to assure that S4 dip switch 3, 4, 7, 8, 9, 10 and S5 (KM-1601SAH/3 "G" CB) dip switch 1 through 5 are in the factory default position. S4 dip switch 1, 2, 5, 6 are cleaning adjustments and the settings are flexible. For factory default settings, see "II.C.3.a) Default Dip Switch Settings."...
  • Page 64 No Ice Production - Possible Cause 13. Inlet Water Valve 14. Float Switch See "IV.D. Float Switch Check and Cleaning." 15. Compressor 16. Pump Motor 17. Pump-Out Check Valve 18. Water System 19. Fan Motor 20. Liquid Line Valve (if applicable) 21.

  • Page 65: Freeze Up

    2. Freeze Up Defrost and clean the unit prior to diagnosing freeze up. See "VI.A. Cleaning and Sanitizing Instructions." Freeze Up - Possible Cause 1. Evaporator 2. Separators 3. Cube Guide 4. Inlet Water Valve 5. Spray Tubes and/or Spray Guides 6.

  • Page 66: Low Ice Production

    Freeze Up - Possible Cause 7. Inlet Water Valve 8. Float Switch See "IV.D. Float Switch Check and Cleaning." 9. Pump Motor 10. Thermostatic Expansion Valve (TXV) 11. Headmaster (C.P.R.) (remote condenser unit) 12. Water Regulating Valve (water-cooled model) See "IV.F. Adjustment of Water Regulating Valve."...
  • Page 67 Low Ice Production - Possible Cause 6. Control Board See "IV.B. Control Board Check." 7. Hot Gas Valve 8. Inlet Water Valve 9. Float Switch See "IV.D. Float Switch Check and Cleaning." 10. Compressor 11. Pump Motor 12. Liquid Line Valve (if applicable) 13.

  • Page 68: Replacement Of Components

    V. Replacement of Components 1. This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death, electric shock, serious injury, or fire. 2. Move the control switch to the "OFF" position and turn off the power supply before servicing.

  • Page 69: Brazing

    2. Brazing 1. R-404A itself is not flammable at atmospheric pressure and temperatures up to 176°F (80°C). 2. R-404A itself is not explosive or poisonous. However, when exposed to high temperatures (open flames), R-404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous. 3.
  • Page 70 For air-cooled and water-cooled models, see the nameplate for the required refrigerant charge. For remote air-cooled model, see the rating label inside the icemaker. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 (latest edition) be used.

  • Page 71: Important Notes For Component Replacement

    Install a new capacitor. Thermistor • Attach the new thermistor to the suction line in the same location as the previous thermistor. • The thermistor should be at the 12 o'clock position on the tube. • Smoothly fill the recessed area of the thermistor holder with high thermal conductive type sealant. Hoshizaki America part number 4A0683-01 (Silicone Heat Sink Compound 10-8108 manufactured by GC Electronics), KE-4560 RTV (manufactured by ShinEtsu Silicones), or equivalent are recommended. • Secure the thermistor with the holder, then insulate it. • Be very careful to prevent damage to the leads. Foam Insulation CAUTION...

  • Page 72: Cleaning And Maintenance

    3. The storage bin is for ice use only. Do not store anything else in the storage bin. A. Cleaning and Sanitizing Instructions Hoshizaki recommends cleaning and sanitizing this unit at least once a year. More frequent cleaning and sanitizing, however, may be required in some existing water conditions.

  • Page 73: Cleaning Procedure

    1. Cleaning Procedure 1) Dilute 27 fl. oz. (800 ml) of Hoshizaki "Scale Away" with 5 gal. (19 l) of warm water. 2) Remove all ice from the evaporator and the storage bin. Note: To remove cubes on the evaporator, turn off the power supply and turn it back on after 3 minutes.

  • Page 74: Sanitizing Procedure - Following Cleaning Procedure

    21) Remove the front panel and fully open the cleaning valve. 22) Move the control switch to the "WASH" position. 23) Replace the front panel in its correct position. 24) Turn on the power supply to rinse off the cleaning solution. 25) Turn off the power supply after 5 minutes.

  • Page 75: Maintenance

    B. Maintenance This icemaker must be maintained individually, referring to the instruction manual and labels provided with the icemaker. 1. Only qualified service technicians should service this icemaker. 2. Move the control switch to the "OFF" position and turn off the power supply before servicing.
  • Page 76 4) Allow the line to drain by gravity. 5) Attach a compressed air or carbon dioxide supply to the icemaker water supply line drain valve. 6) Move the control switch to the "ICE" position. 7) Replace the front panel in its correct position, then turn on the power supply. 8) Blow the icemaker water supply line out using the compressed air or carbon dioxide supply.

This manual is also suitable for:

Km-1601srh3Km-1601swh3Km-1601sahKm-1601swhKm-1601srh

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