Manitowoc Marine Q 1000, Service Technician'S Handbook

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Q1800 Series - Self-Contained Air-Cooled
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
Times in minutes
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 8.5-9.3 9.4-10.3 9.9-10.9
1-2.5
80/26.7 9.0-9.9 9.8-10.8 10.5-11.5
90/32.2 9.6-10.5 10.4-11.5 11.1-12.2
100/37.8 10.6-11.6 11.5-12.6 12.4-13.6
Air Temp. Entering
Condenser
°F/°C
Water Temperature °F/°C
Based on average ice slab weight of 13.0 - 14.12 lb.
Regular cube derate is 7%
50/10.0 70/21.1 90/32.2
70/21.1 1880 1720 1640
80/26.7 1780 1650 1560
90/32.2 1690 1570 1480
100/37.8 1550 1440 1350
Air Temp.
Entering
Condenser
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
Suction pressure drops gradually throughout the freeze cycle
50/10.0 220-280 40-20 155-190 60-80
70/21.1 220-280 40-20 160-190 65-80
80/26.7 230-290 42-20 160-190 65-80
90/32.2 260-320 44-22 185-205 70-90
100/37.8 300-360 46-24 210-225 75-100
110/43.3 320-400 48-26 215-240 80-100