Service manual

Technical Characteristics
Typical Cycle Time
••16 minutes @ 90
o
F. air and 70
o
F. water; 13 minutes @ 70
o
F. air and 50
o
F. water
Typical Harvest Ice Weight
••3.6 pounds .
Typical Low Side Pressure
•• 18-20 PSIG just before harvest
Typical Freeze Cycle Discharge Pressure
••190 - 240 PSIG @ 70
o
F. air and 50
o
F. water
••250 - 290 PSIG @ 90
o
F. air and 70
o
F. water
••250 for water cooled
Refrigerant Charge:
••
Air cooled = 20 ounces R-502; Water cooled = 19 ounces R-502
Harvest Time
•• Normally 1
1
⁄
2
to 2 minutes. Depends upon time required to warm suction line to 55
o
F.
Typical Suction Pressure, In Harvest:
•• 105 -120 PSIG (@ 75
o
F., may be lower in cooler ambients)
Typical Discharge Pressure, In Harvest:
•• 120 - 150 PSIG
Water Cooled High Pressure Cut Out
••Cuts out at 380 PSIG, resets at 315 PSIG
Typical Compressor Amp Draw:
•• 7-8 during freeze cycle; 10-11 during harvest cycle
Compressor:
•• Copeland: RSN2-0075-PAA
Thermostatic Expansion Valve
••Superheat is 3
o
- 6
o
F.
Bin Thermostat
••Cut out at 35
o
F., cut in at 39
o
F.. Adjustable warmer.
Ice Size Thermostat:
•• Switches to harvest cycle with temperature fall to 38oF.. Resets at 43
o
F.
Ice Size Heater
••
Adds heat to ice size thermostat to prevent premature harvest. 6,000 ohms resistance.
Harvest Termination Thermostat
•• Opens to switch to freeze cycle with temperature rise to 55
o
F. Resets at 40
o
F.
SLC400
January 1993
Page 18