Service manual

Refrigeration System Section 7
7-34
Part No. 80-1206-3
Q1400C/CVD1475 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
Q1400C/CVD1476 SERIES
REMOTE WATER COOLED
NOTE: These characteristics may vary depending on
operating conditions.
Cycle Times
Freeze Time + Harvest Time = Total Cycle Time
24 Hour Ice Production
Condenser Water Consumption
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/
-28.9 to 21.1
11.1-12.6
12.6-14.4 14.4-16.4
.75-2.5
90/32.2 11.3-12.9 12.9-14.7 14.8-16.8
100/37.8 12.2-13.9 14.1-16.0 16.1-18.3
110/43.3 13.5-15.4 15.8-17.9 16.3-18.5
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/
-28.9 to 21.1
1375 1225 1085
90/32.2 1350 1200 1060
100/37.8 1260 1110 980
110/43.3 1150 1000 970
Based on average ice weight of one harvest cycle 12.00-13.5 lb
(6.00-6.75 lb. per evaporator)
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 42-22 140-185 75-95
70/21.1 275-220 42-24 150-190 75-95
80/26.7 285-225 43-25 155-195 85-95
90/32.2 290-235 44-26 160-195 85-100
100/37.8 335-260 46-28 170-200 85-115
110/43.3 385-310 50-30 180-210 95-125
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
35 to 70/
1.6 to 21.1
10.7-12.7 12.4-14.7 14.6-17.3
.75-2.5
80/26.7 10.8-12.9 12.5-14.9 14.7-17.4
90/32.2 10.9-13.0 12.6-15.0 14.8-17.5
100/37.8 10.9-13.0 12.7-15.0 14.9-17.6
Times in minutes
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
35 to 70/
1.6 to 21.1
1420 1245 1070
90/32.2 1400 1230 1065
100/37.8 1395 1225 1060
110/43.3 1390 1220 1055
Based on average ice weight of one harvest cycle 12.00-14.0 lb
(6.00-7.00 lb. per evaporator)
Condenser
Water
Consumption
90/32.2 Air Temperature Around Ice Machine
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
Gal/24 hours 1200 2100 4000
Water regulating valve set to maintain 240 psig discharge
pressure
Air Temp.
Entering
Condenser
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
35 to 70/
1.6 to 21.1
265-235 48-28 150-170 70-90
80/26.7 265-235 48-28 150-170 70-90
90/32.2 265-235 48-28 150-170 70-90
100/37.8 270-235 49-29 160-180 70-90
110/43.3 275-235 50-30 160-180 75-95
Suction pressure drops gradually throughout the freeze cycle