Section 7
Refrigeration System
Part No. 80-1100-3
7-35
Q320 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
Q320 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
12.2-13.9
13.1-14.9
14.2-16.2
1-2.5
80/26.7
13.6-15.5
14.8-16.8-
16.1-18.4
90/32.2
16.1-18.4
17.7-20.2
19.7-22.3
100/37.8
19.7-22.3
22.0-25.0
25.0-28.3
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
310
290
270
80/26.7
280
260
240
90/32.2
240
220
200
100/37.8
200
180
160
Based on average ice slab weight of 2.94 - 3.31lb
Regular cube derate is 7%
Air Temp.
Entering
Condenser
°F/°C
Freeze Cycle
Harvest Cycle
Discharg
e
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10.0
200-250
50-36
150-180
75-90
70/21.1
200-250
50-36
160-190
80-100
80/26.7
220-280
50-36
170-200
90-110
90/32.2
230-320
54-38
180-220
90-120
100/37.8
270-360
56-40
200-250
95-140
110/43.3
280-380
58-42
210-260
95-150
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
12.6-14.4
13.6-15.5
15.4-17.6
1-2.5
80/26.7
13.1-14.9
14.2-16.2
16.1-18.4
90/32.2
13.6-15.5
14.8-16.8
16.9-19.2
100/37.8
14.2-16.2
15.4-17.6
17.7-20.2
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
300
280
250
80/26.7
290
270
240
90/32.2
280
260
230
100/37.8
270
250
220
Based on average ice slab weight of 2.94 - 3.31 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
270
560
3200
Water regulating valve set to maintain 230 PSIG discharge pressure
Air Temp.
Around Ice
Machine
°F/°C
Freeze Cycle
Harvest Cycle
Discharg
e
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10.0
225-235
50-36
160-180
80-110
70/21.1
225-235
50-36
170-190
85-115
80/26.7
225-240
50-36
170-200
85-115
90/32.2
225-250
50-36
170-210
90-120
100/37.8
225-260
52-36
170-210
90-120
110/43.3
225-265
54-36
175-215
95-125
Suction pressure drops gradually throughout the freeze cycle
Summary of Contents for QD0202A
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