Service Manual

Part Number 8014793 6/18 187
S420A
All Self-Contained Air-cooled Models After Serial Number
110667970
Characteristics may vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
24 HOUR ICE PRODUCTION
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
Freeze Time
Harvest
Time
1
1 Times in minutes
Water Temperature °F/°C
50/10 70/21 90/32
70/21 11.9-12.7 13.1-14.0 14.6-15.5
1-2.5
80/27 13.1-14.0 14.3-15.2 16.0-17.0
90/32 14.6-15.5 16.3-17.4 17.3-18.4
100/38 16.3-17.4 17.3-18.4 18.9-20.1
110/43 18.1-19.2 19.8-21.0 21.3-22.6
Air Temp. Entering
Condenser °F/°C
Water Temperature °F/°C
1
1 Based on average ice slab weight of 3.4 - 3.6 lb.
50/10 70/21 90/32
70/21 365 335 305
80/27 335 310 280
90/32 305 275 260
100/38 275 260 240
110/43 250 230 215
Air Temp
Entering
Condenser
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
1
1 Suction pressure drops gradually throughout the freeze cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10
195-255 50-30 125-185 70-90
70/21 195-270 60-30 135-190 80-115
80/27 220-285 62-32 135-195 80-115
90/32 250-320 70-34 175-195 85-115
100/38 290-390 75-35 190-215 115-140
110/43 320-400 80-37 225-250 130-170