May 2008
Page 22
CU1526, CU2026, CU3030
Service Manual
Refrigeration & Water Systems
Refrigerant:
R-404A
Compressor:
Copeland or Tecumseh hermetic by model
Expansion valve:
Non adjustable, internally equalized
Hot gas valve
: Pilot operated, line voltage coil.
Condensers
: Forced draft air, counterflow water. All air cooled models have left side air inlet. All air
cooled models exhaust air out the right front.
Air filters
: Mounted in left front grill and under the base on the CU3030.
Fan pressure control.
All AC. Controls fan motor operation in the freeze cycle.
High pressure cut out
. All models.
Evaporator:
Unified cell plate. Nickel plated copper.
•
Small cube: 7/8" high x 7/8" deep x 3/8" wide
•
Medium cube: 7/8" high x 7/8" deep x 7/8" wide
Water System
Float fed type
. Water reservoir contains partial water charge, which is replenished during each ice
making cycle.
Water valve
: Float valve. Water level to be about 1 inch deep at the left end of the reservoir.
Pump
: Unsealed pedestal type, twist-release mounting
Water purge valv
e: Solenoid type. Opens to purge water during harvest cycle.
Water Sensor
: Three probe conductivity.
Distributor
: ABS plastic. Evenly distributes water over the evaporator surface. Slides off the evaporator
top. Removable cover for ease of cleaning.
