Manitowoc QM20

Part Number 80-01111-9 7/10 215
Q270 SELF-CONTAINED AIR-COOLED
NOTE: These characteristics may vary depending on
operating conditions.
Cycle Times
Freeze Time + Harvest Time = Total Cycle Time
Times in minutes
24 Hour Ice Production
Based on average ice slab weight of 2.44 - 2.75 lb (1107 – 1247 g).
Regular cube derate is 7%
Operating Pressures
Suction pressure drops gradually throughout the freeze cycle
Air Temp.
Entering
Condenser
°F/°C
Freeze Time
Harvest
Time
Water Temperature °F/°C
50/10 70/21 90/32
70/21 11.0-12.6 12.8-14.7 14.5-16.5
1.0-2.5
80/27 11.3-12.9 13.1-15.0 14.8-16.9
90/32 12.6-14.3 14.8-16.9 17.0-19.3
100/38 14.1-16.1 17.0-19.3 19.8-22.5
Air Temp. Entering
Condenser °F/°C
Water Temperature °F/°C
50/10 70/21 90/32
70/21 280 245 220
80/27 275 240 215
90/32 250 215 190
100/38 225 190 165
Air Temp.
Entering
Condenser
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10 200-255 60-22 165-200 70-95
70/21 200-255 60-22 170-205 70-100
80/27 200-295 61-23 175-210 75-100
90/32 240-330 65-26 205-240 80-100
100/38 265-375 66-30 220-260 85-115