Self-Contained Water-Cooled - Manitowoc Q450 Service Technician's Handbook

Q200 Series - Self-Contained Water-Cooled
Characteristics may vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine
°F/°C
70/21.1
80/26.7
90/32.2
100/37.8
Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
70/21.1
80/26.7
90/32.2
100/37.8
Based on average ice slab weight of 2.44 - 2.81 lb.
Regular cube derate is 7%
CONDENSER WATER CONSUMPTION
Air Temp. Around Ice
Machine 90°F/32.2°C
Gal/24 hours
Water regulating valve set to maintain 230 PSIG discharge pressure
OPERATING PRESSURES
Air Temp.
Around Ice
Machine
°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
11.5-13.5
12.0-14.1
12.6-14.7
13.1-15.4
50/10.0
270
260
250
240
50/10.0
240
Freeze Cycle
Discharge
Pressure Pressure
PSIG
225-235
225-235
225-240
225-245
225-250
225-260
–121–
70/21.1 90/32.2
12.8-15.0 14.5-16.9
13.5-15.7 15.2-17.8
14.1-16.5 16.1-18.7
14.8-17.3 17.0-19.8
Water Temperature °F/°C
70/21.1
245
235
225
215
Water Temperature °F/°C
70/21.1
480
Suction Discharge
Pressure
PSIG
60-28 170-200
60-28 170-200
60-28 175-205
65-30 175-205
70-32 180-210
75-34 185-215
Harvest
Time
1-2.5
90/32.2
220
210
200
190
90/32.2
2100
Harvest Cycle
Suction
Pressure
PSIG PSIG
90-110
90-110
90-110
90-115
90-115
90-120