Service manual

Section 7 Refrigeration System
Part No. 80-1206-3 7-31
Q0800C/CVD0875 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
IB0800C/CVD0875 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
9.4-10.8 10.5-12.1 11.4-13.1
.75-2.5
80/26.7 9.5-11.0 10.7-12.3 11.4-13.1
90/32.2 10.3-11.9 11.2-12.9 12.1-13.8
100/37.8 11.2-12.9 12.3-14.1 13.3-15.2
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
760 690 640
80/26.7 750 680 640
90/32.2 700 650 610
100/37.8 650 600 560
Based on average ice slab weight of 5.75 - 6.50 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 75-95
70/21.1 270-220 40-23 150-190 80-95
80/26.7 285-225 47-24 155-195 80-95
90/32.2 295-235 52-25 165-200 85-100
100/37.8 340-260 56-26 180-210 85-112
110/43.3 385-300 60-28 195-230 90-115
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.
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
9.4-10.8 10.5-12.1 11.4-13.1
.75-2.5
80/26.7 9.5-11.0 10.7-12.3 11.4-13.1
90/32.2 10.3-11.9 11.2-12.9 12.1-13.8
100/37.8 11.2-12.9 12.3-14.1 13.3-15.2
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
760 690 640
80/26.7 750 680 640
90/32.2 700 650 610
100/37.8 650 600 560
Based on average ice slab weight of 5.75 - 6.50 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 75-95
70/21.1 270-220 40-23 150-190 80-95
80/26.7 285-225 47-24 155-195 80-95
90/32.2 295-235 52-25 165-200 85-100
100/37.8 340-260 56-26 180-210 85-112
110/43.3 385-300 60-28 195-230 90-115
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.