Service Manual
Table Of Contents
- Safety Notices
- Definitions
- General Information
- Installation
- Stacking Two Ice Machines on a Single Storage Bin
- Location of Ice Machine
- Clearance Requirements
- Dual Evaporator Model Installation on a Manitowoc Bin
- Ice Machine on a Dispenser Installation
- Water Supply and Drains
- Lineset Applications
- QuietQube® Remote Condensing Unit
- Additional Refrigerant Charge For 51' to 100' Line Sets
- Maintenance
- Operation
- Menu Navigation
- Component Check Procedures
- Control Board, Display And Touchscreen
- Operating an ice machine without a Touchscreen
- Control Board Relay Test
- Programming A Replacement Control Board
- USB Flash Drive Specifications and Formatting
- Exporting Data to a Flash Drive
- Upgrading Firmware with a Flash Drive
- Main Fuse
- Bin Switch
- Water Level Control Circuitry
- Ice Thickness Probe (Initiates Harvest)
- Bin Level Probe
- Thermistors
- High Pressure Cutout (HPCO) Control
- Low Pressure Cutout (LPCO) Control
- Compressor Time Delay
- Fan Cycle Control
- Harvest Assist Air Pump
- Compressor Electrical Diagnostics
- Diagnosing Start Components
- Refrigeration Components
- Recovery/Evacuation/Charging Procedures QuietQube® Models
- System Contamination Clean-Up
- Total System Refrigerant Charge QuietQube® CVD Models
- Control Board, Display And Touchscreen
- Charts
- Diagrams
120 Part Number: 000015431 Rev 02 6/20
FAILURE TYPE AND SYMPTOMS:
Refrigerant overcharge page 162
Measured in the freeze cycle
a. Head pressure is above or on the high end of the
published numbers
b. Sub cooling will be greater than 25°F.
Head Pressure Control Valve failure in the freeze cycle
page 163
Measured in the freeze cycle
a. Head pressure is floating up and down
b. Liquid line temperature floats up and down
Fan cycle control turns condenser fan motor
on/off - This symptom will not be observed at
temperatures above 70°F.
Head Pressure Control Valve failure in harvest page 163
Measured in the harvest cycle
a. Liquid line temperature is low
b. 30 seconds into harvest there will be a
temperature difference that can be detected by
touch between the discharge port and receiver
port on the Head Pressure Control Valve.