Manuali utente per Hoshizaki KM-901MAH

Sommario

• Important Safety Information

  6
• I. Specifications

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  • A. Icemaker

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    • 1a. KM-901MAH (air-cooled) Auxiliary Code T-0, U-0

      7
    • 1b. KM-901MAH (air-cooled) Auxiliary Code U-1 and Later

      8
    • 2a. KM-901MWH (water-cooled) Auxiliary Code T-0, U-0

      9
    • 2b. KM-901MWH (water-cooled) Auxiliary Code U-1 and Later

      10
    • 3a. KM-901MRH (remote air-cooled) Auxiliary Code T-0, U-0

      11
    • 3b. KM-901MRH (remote air-cooled) Auxiliary Code U-1 and Later

      12
    • 4a. KM-901MRH3 (remote air-cooled) Auxiliary Code T-0, U-0

      13
    • 4b. KM-901MRH (remote air-cooled) Auxiliary Code U-1 and Later

      14
  • B. Condenser Unit

    15
    • 1. URC-9F

      15
• II. General Information

  17
  • A. Construction

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    • 1. KM-901MAH (air-cooled)

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    • 2. KM-901MWH (water-cooled)

      18
    • 3. KM-901MRH/3 (remote air-cooled)

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  • B. Sequence of Operation

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    • 1. Sequence Cycles and Shutdown

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      • a) "E" Control Board: Auxiliary Code T-0, U-0

        20
      • b) "G" Control Board: Auxiliary Code U-1 and Later

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    • 2. Sequence Flow Chart

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      • a) "E" Control Board: Auxiliary Code T-0, U-0

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      • b) "G" Control Board: Auxiliary Code U-1 and Later

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  • C. Control Board

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    • 1. Control Board Layout

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    • 2. Features

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      • a) Maximum Water Supply Period - 6 minutes

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      • b) Harvest Backup Timer and Freeze Timer

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      • c) High Temperature Safety

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      • d) Low Water Safety

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      • e) High Voltage and Low Voltage Cut-outs

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      • f) LED Lights and Audible Alarm Safeties

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    • 3. Controls and Adjustments

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      • a) Default Dip Switch Settings

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      • b) Harvest Timer (S4 dip switch 1 & 2)

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      • c) Pump-Out Timer (S4 dip switch 3 & 4)

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      • d) Pump-Out Frequency Control (S4 dip switch 5 & 6)

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      • e) Bin Control Selector/Harvest Pump Timer (S4 dip switch 7)

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      • f) Factory Use (S4 dip switch 8)

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      • g) Freeze Timer (S4 dip switch 9 & 10)

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      • h) Float Switch Control (S5 dip switch 1): "G" Control Board

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      • i) Refill Counter (S5 dip switch 2 through 5): "G" Control Board

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  • D. Bin Control

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    • 1. Thermostatic Bin Control: Auxiliary Code T-0, U-0

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    • 2. Mechanical Bin Control: Auxiliary Code U-1 and Later

      36
  • E. Float Switch

    36
  • F. Thermistor

    36
  • G. Control Switch

    36
• III. Technical Information

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  • A. Water Circuit and Refrigeration Circuit

    37
    • 1. KM-901MAH (air-cooled)

      37
    • 2. KM-901MWH (water-cooled)

      38
    • 3. KM-901MRH/3 (remote air-cooled)

      39
  • B. Wiring Diagrams

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    • 1. Thermostatic Bin Control: Auxiliary Code T-0, U-0

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      • a) KM-901MAH (air-cooled) and KM-901MWH (water-cooled)

        40
      • b) KM-901MRH (remote air-cooled)

        41
      • c) KM-901MRH3 (remote air-cooled)

        42
    • 2. Mechanical Bin Control: Auxiliary Code U-1 and Later

      43
      • a) KM-901MAH (air-cooled) and KM-901MWH (water-cooled)

        43
      • b) KM-901MRH (remote air-cooled)

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      • c) KM-901MRH3 (remote air-cooled)

        45
  • C. Performance Data

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    • 1. KM-901MAH (air-cooled)

      46
    • 2. KM-901MWH (water-cooled)

      47
    • 3. KM-901MRH (remote air-cooled)

      48
    • 4. KM-901MRH3 (remote air-cooled)

      49
• IV. Service Diagnosis

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  • A. Diagnostic Procedure

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  • B. Control Board Check

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  • C. Bin Control Check

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    • 1. Thermostatic Bin Control Check: Auxiliary Code T-0, U-0

      54
    • 2. Mechanical Bin Control Check and Cleaning: Auxiliary Code U-1 and Later

      55
      • a) Mechanical Bin Control Check

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      • b) Mechanical Bin Control Cleaning

        56
  • D. Float Switch Check and Cleaning

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    • 1. Float Switch Check

      57
    • 2. Float Switch Cleaning

      58
  • E. Thermistor Check

    59
  • F. Diagnostic Charts

    60
• V. Removal and Replacement of Components

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  • A. Service for Refrigerant Lines

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    • 1. Refrigerant Recovery

      68
    • 2. Brazing

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    • 3. Evacuation and Recharge (R-404A)

      69
  • B. Removal and Replacement of Compressor

    70
  • C. Removal and Replacement of Expansion Valve

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  • D. Removal and Replacement of Hot Gas Valve or Liquid Line Valve

    72
  • E. Removal and Replacement of Evaporator

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  • F. Removal and Replacement of Air-Cooled Condenser

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  • G. Removal and Replacement of Water-Cooled Condenser

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  • H. Removal and Replacement of Remote Air-Cooled Condenser

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  • I. Removal and Replacement of Water Regulating Valve (water-cooled model)

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  • J. Adjustment of Water Regulating Valve (water-cooled model)

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  • K. Removal and Replacement of Headmaster (Condensing Pressure Regulator - C.P.R.) (remote air-cooled model)

    78
  • L. Removal and Replacement of Thermistor

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  • M. Removal and Replacement of Fan Motor (air-cooled and remote air‑cooled models)

    80
  • N. Removal and Replacement of Inlet Water Valve

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  • O. Removal and Replacement of Pump Motor

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  • P. Removal and Replacement of Control Board

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• VI. Cleaning and Maintenance

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  • A. Cleaning and Sanitizing Instructions

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    • 1. Cleaning Procedure

      84
    • 2. Sanitizing Procedure - Following Cleaning Procedure

      85
  • B. Maintenance

    86
  • C. Preparing the Icemaker for Long Storage

    86