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
168 Part Number: 000015431 Rev 02 6/20
SUCTION ACCUMULATOR OPERATION
Liquid refrigerant collects in the suction accumulator
during the harvest cycle and is removed during the freeze
cycle. The liquid refrigerant is returned to the compressor
through a screen and orifice in the suction accumulator
J tube. Passing the liquid through the orifice causes a
pressure drop; the liquid flashes to a vapor and creates
a refrigeration affect. It is normal to see frost on the
accumulator, suction line and compressor suction port
in the freeze cycle. The suction accumulator empties
within the first 5 minutes of the freeze cycle. When the
refrigeration affect ends (liquid refrigerant has been
removed), the suction line between the accumulator and
compressor will increase in temperature. The suction line
temperature increases 20 plus degrees within 2 minutes
after the liquid has been removed.
1
Minute
2
Minutes
3
Minutes
4
Minutes
5
Minutes
6
Minutes
7
Minutes
8
Minutes
Temperature Increases
20+ºF (11+ºC)
The time needed to remove the liquid refrigerant will
vary with the ambient temperature and the length of the
harvest cycle. Higher ambient temperatures = shorter
harvest cycles, faster removal of liquid refrigerant from
the accumulator and greater suction line temperature
increases.