Manitowoc Q450 - Self-Contained Water-Cooled

–135–
Q800 Series - Self-Contained Water-Cooled
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.
Around Ice
Machine
°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 8.7-10.1 9.5-11.0 10.9-12.5
1-2.5
80/26.7 8.9-10.2 9.7-11.1 11.0-12.7
90/32.2 9.0-10.3 9.8-11.3 11.2-12.9
100/37.8 9.1-10.5 10.0-11.5 11.4-13.1
Air Temp. Around Ice
Machine °F/°C
Water Temperature °F/°C
Based on average ice slab weight of 5.75 - 6.50 lb.
Regular cube derate is 7%
50/10.0 70/21.1 90/32.2
70/21.1 810 750 670
80/26.7 800 740 660
90/32.2 790 730 650
100/37.8 780 720 640
Air Temp. Around Ice
Machine 90°F/32.2°C
Water Temperature °F/°C
Water regulating valve set to maintain 230 PSIG discharge pressure
50/10.0 70/21.1 90/32.2
Gal/24 hours 640 1420 6000
Air Temp.
Around
Ice
Machine
°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
225-235 33-20 160-185 65-85
70/21.1 225-235 34-20 165-185 70-85
80/26.7 225-235 34-20 165-185 70-85
90/32.2 225-235 36-22 165-185 70-85
100/37.8 225-235 36-22 165-185 70-85
110/43.3 225-240 38-24 170-190 75-90