Service manual

Refrigeration System Section 7
7-32
Part No. 80-1206-3
Q1000C/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
IB1000C/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
980 910 840
80/26.7 960 900 820
90/32.2 920 860 780
100/37.8 850 790 720
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 42-24 150-190 85-95
80/26.7 285-225 48-24 155-195 85-95
90/32.2 295-235 52-25 165-195 85-100
100/37.8 340-260 55-25 180-205 85-112
110/43.3 385-300 60-27 195-225 90-118
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.
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
980 910 840
80/26.7 960 900 820
90/32.2 920 860 780
100/37.8 850 790 720
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 42-24 150-190 85-95
80/26.7 285-225 48-24 155-195 85-95
90/32.2 295-235 52-25 165-195 85-100
100/37.8 340-260 55-25 180-205 85-112
110/43.3 385-300 60-27 195-225 90-118
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.