Hoshizaki KM-1601MRH/3 User Manuals

Table of Contents

• Important Safety Information

  5
• I. Specifications

  6
  • A. Icemaker

    6
    • 1. KM-1601MRH with URC-21F

      6
    • 2. KM-1601MRH with URC-22F

      7
    • 3. KM-1601MRH3 with URC-21F

      8
    • 4. KM-1601MRH3 with URC-22F

      9
  • B. Condenser Unit

    10
• II. General Information

  11
  • A. Construction

    11
    • 1. KM-1601MRH, KM-1601MRH3

      11
    • 2. URC-21F, URC-22F

      12
  • B. Sequence of Operation

    13
    • 1. Sequence Cycles and Shutdown

      13
      • a) One Minute Fill Cycle

        13
      • b) Initial Harvest Cycle

        13
      • c) Freeze Cycle

        13
      • d) Pump-Out Cycle

        13
      • e) Normal Harvest Cycle

        14
    • 2. Sequence Flow Chart

      15
  • C. Control Board

    16
    • 1. Control Board Layout

      17
    • 2. LED Lights and Audible Alarm Safeties

      18
    • 3. Controls and Adjustments

      19
      • a) Default Dip Switch Settings

        19
      • b) Harvest Timer (dip switch 1 & 2)

        19
      • c) Pump-Out Timer (dip switch 3 & 4)

        20
      • d) Pump-Out Frequency Control (dip switch 5 & 6)

        20
      • e) Factory Use (S4 dip switch 7 & 8)

        20
      • f) Freeze Timer (dip switch 9 & 10)

        21
  • D. Control Switch

    21
• III. Technical Information

  22
  • A. Water Circuit and Refrigeration Circuit

    22
  • B. Wiring Diagrams

    23
    • 1. KM-1601MRH

      23
    • 2. KM-1601MRH3

      24
  • C. Performance Data

    25
    • 1. KM-1601MRH with URC-21F

      25
    • 2. KM-1601MRH with URC-22F

      26
    • 3. KM-1601MRH3 with URC-21F

      27
    • 4. KM-1601MRH3 with URC-22F

      28
• IV. Service Diagnosis

  29
  • A. Diagnostic Procedure

    29
  • B. Control Board Check

    31
  • C. Bin Control Check

    32
  • D. Float Switch Check and Cleaning

    33
    • 1. Float Switch Check

      33
    • 2. Float Switch Cleaning

      34
  • E. Thermistor Check

    35
  • F. Diagnostic Charts

    36
    • 1. No Ice Production

      36
    • 2. Evaporator is Frozen Up

      39
    • 3. Low Ice Production

      40
    • 4. Abnormal Ice

      41
    • 5. Other

      41
• V. Replacement of Components

  42
  • A. Service for Refrigerant Lines

    42
    • 1. Refrigerant Recovery

      42
    • 2. Brazing

      43
    • 3. Evacuation and Recharge (R-404A)

      43
  • B. Important Notes for Component Replacement

    45
• VI. Cleaning and Maintenance Instructions

  46
  • A. Cleaning and Sanitizing Procedures

    46
    • 1. Cleaning Procedure

      47
    • 2. Sanitizing Procedure - Following Cleaning Procedure

      48
  • B. Maintenance

    49
  • C. Preparing the Icemaker for Long Storage

    49