Manitowoc QD0802A User Manual

Refrigeration System Section 7
7-34 Part No. 80-1100-3
Q280 SERIES
Self-Contained Air-Cooled
NOTE: These characteristics may vary depending on
operating conditions.
Cycle Times
Freeze Time + Harvest Time = Total Cycle Time
24 Hour Ice Production
Operating Pressures
Q280 SERIES
Self-Contained Water-Cooled
NOTE: These 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
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 10.6-12.5 11.8-13.8 12.6-14.7
1.0-2.5
80/26.7 11.5-13.5 12.8-15.0 13.8-16.1
90/32.2 12.6-14.7 14.1-16.5 15.2-17.8
100/37.8 14.5-16.9 16.5-19.3 18.0-21.0
Times in minutes
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 290 265 250
80/26.7 270 245 230
90/32.2 250 225 210
100/37.8 220 195 180
Based on average ice slab weight of 2.44 - 2.81 lb
Regular cube derate is 7%
Air Temp.
Entering
Condenser
°F/°C
Freeze Cycle Harvest Cycle
Discharg
e
Pressure
PSIG
Suction
Pressure
PSIG
Discharg
e
Pressure
PSIG
Suction
Pressure
PSIG
50/10.0 195-250 60-20 150-190 70-90
70/21.1 195-250 60-20 150-190 70-90
80/26.7 220-280 60-26 180-220 70-90
90/32.2 250-310 66-30 190-220 80-100
100/37.8 280-350 70-32 220-250 80-110
110/43.3 310-390 85-40 250-270 80-120
Suction pressure drops gradually throughout the freeze cycle
Air Temp.
Around Ice
Machine
°F/°C
Freeze Time
Harvest
Time
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 10.6-12.5 12.0-14.1 12.3-14.4
1-2.5
80/26.7 10.8-12.7 12.3-14.4 13.8-16.1
90/32.2 11.0-13.0 12.6-14.7 14.1-16.5
100/37.8 11.3-13.2 12.8-15.0 14.5-16.9
Times in minutes
Air Temp.
Around Ice
Machine
°F/°C
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 290 260 255
80/26.7 285 255 230
90/32.2 280 250 225
100/37.8 275 245 220
Based on average ice slab weight of 2.44 - 2.81 lb
Regular cube derate is 7%
Condenser
Water
Consumption
90/32.2 Air Temperature
Around Ice Machine
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
Gal/24 hours 250 490 3400
Water regulating valve set to maintain 230 PSIG discharge pressure
Air Temp.
Around
Ice
Machine
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10.0
225-235 60-28 190-200 75-90
70/21.1 225-235 60-28 190-200 80-90
80/26.7 225-240 60-28 190-200 80-90
90/32.2 225-245 62-28 190-200 80-90
100/37.8 225-250 62-30 190-200 80-90
110/43.3 225-260 64-32 195-205 80-95
Suction pressure drops gradually throughout the freeze cycle

Manitowoc QD0802A Specifications

General

Brand	Manitowoc
Model	QD0802A
Category	Ice Maker
Language	English