Q1300 Series Self-Contained Air-Cooled - Manitowoc Q450 Service Technician's Handbook

Q1300 Series - Self-Contained Air-Cooled
Characteristics may vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Condenser
°F/°C
70/21.1
80/26.7
90/32.2
100/37.8
Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Entering
Condenser
°F/°C
70/21.1
80/26.7
90/32.2
100/37.8
Based on average ice slab weight of 10.0 - 11.0 lb.
Regular cube derate is 7%
OPERATING PRESSURES
Air Temp.
Entering
Condenser
°F/°C
50/10.0
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
Suction pressure drops gradually throughout the freeze cycle
Freeze Time
Water Temperature °F/°C
50/10.0
9.4-10.5
9.9-11.1
11.0-12.3
12.3-13.7
50/10.0
1320
1260
1150
1040
Freeze Cycle
Discharge Suction
Pressure Pressure
PSIG
220-280
220-280
220-280
245-300
275-330
280-360
70/21.1
9.9-11.1 10.9-12.2
10.6-11.8 11.6-12.9
11.5-12.8 12.8-14.2
13.2-14.7 14.7-16.3
Water Temperature °F/°C
70/21.1
1260
1190
1110
980
Discharge
Pressure
PSIG PSIG
40-20 140-170
40-20 145-170
42-22 150-185
48-26 160-190
50-26 160-210
52-28 165-225
–140–
Harvest
Time
90/32.2
1-2.5
90/32.2
1160
1100
1010
890
Harvest Cycle
Suction
Pressure
PSIG
65-80
70-80
70-80
70-85
70-90
75-100