Hoshizaki 73183 User Manuals

Table of Contents

• Important Safety Information

  5
• I. Specifications

  7
  • A. Nameplate Ratings

    7
  • B. Dimensions

    7
    • 1. Refrigerated Volume and Shelf Space

      7
    • 2. One Section/Two Section/Three Section

      8
• II. General Information

  9
  • A. Construction

    9
    • 1. One Section

      9
    • 2. Two Section

      10
    • 3. Three Section

      11
  • B. Sequence of Operation

    12
    • 1. Sequence Cycles and Shutdown

      12
      • a) Refrigerator

        12
      • b) Freezer

        13
    • 2. Sequence Flow Charts

      14
      • a) Refrigerator

        14
      • b) Freezer

        15
  • C. Display Module

    16
    • 1. Display Module Layout

      16
    • 2. Controls and Adjustments

      17
  • D. Control Module

    18
    • 1. Control Module Layout

      18
    • 2. Alarm Safeties

      19
  • E. Compressor Overload, Short Cycle Protection, and High-Pressure Switch

    20
    • 1. Compressor External or Internal Overload

      20
    • 2. Short-Cycle Protection

      20
    • 3. High-Pressure Switch

      20
  • F. Mullion/Perimeter Heater

    20
  • G. Thermistors

    20
• III. Technical Data

  21
  • A. Refrigeration Circuit

    21
  • B. Wiring Diagrams

    22
• IV. Service Diagnosis

  27
  • A. Diagnostic Procedure

    27
    • 1. Refrigerator

      28
    • 2. Freezer

      30
  • B. Control Module Check

    33
  • C. Thermistor Check

    34
  • D. Diagnostic Chart

    35
    • 1. Unit Not Cooling

      35
    • 2. Evaporator is Frozen Up

      36
    • 3. Defrost Fails to Terminate

      36
• V. Replacement of Components

  37
  • A. Service for Refrigerant Lines

    37
    • 1. Refrigerant Recovery

      37
    • 2. Brazing

      38
    • 3. Evacuation and Recharge

      38
  • B. Important Notes for Component Replacement

    40
  • C. Door Re-Hinging

    40
• VI. Cleaning and Maintenance Instructions

  41
  • A. Cleaning

    41
    • 1. Exterior

      41
    • 2. Cabinet Interior

      41
    • 3. Door Gaskets

      41
    • 4. Shelves

      41
  • B. Maintenance

    41
    • 1. Condenser

      41
    • 2. Power Supply Connection

      41
  • C. Shutdown and Long Storage

    42