Service manual

Section 7 Refrigeration System
Part No. 80-1206-3 7-33
SU1000C/CVD1075/CVD1285 SERIES
REMOTE AIR COOLED
NOTE: These 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
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
-20 to 70/
-29 to 21.1
9.9-10.6 10.8-11.6 11.8-12.6
.75-2.5
80/26.7 10.1-10.9 10.9-11.7 12.1-13.0
90/32.2 10.6-11.4 11.5-12.3 12.8-13.7
100/37.8 11.6-12.5 12.6-13.5 14.0-15.0
Times in minutes
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
-20 to 70/
-29 to 21.1
970 870 790
80/26.7 950 860 780
90/32.2 910 820 740
100/37.8 820 740 670
Based on average ice slab weight of 7.75 - 8.25 lb
Regular cube derate is 7%
Air Temp.
Entering
Condenser
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
-20 to50/
-29 to10.0
260-215 40-22 140-185 80-95
70/21.1 270-220 42-22 150-190 85-95
80/26.7 275-230 48-22 155-195 85-95
90/32.2 290-260 52-22 165-195 85-100
100/37.8 325-270 55-24 180-205 85-112
110/43.3 360-300 60-27 195-225 95-118
Suction pressure drops gradually throughout the freeze cycle
It is normal for the head pressure control valve to fluctuate up and
down (refer to headmaster diagnostics). Depending on ambient
temperature, low event during hunting may be below published
discharge pressures.