User Manual - Page 218

For IRT1900N263E.

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218 Part Number: 000015430 Rev 02 5/20
IT0620W
Self-Contained Water-Cooled Model
Characteristics vary depending on operating conditions.
CYCLE TIMES
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine °F/°C
Freeze Time
Harvest
Time ¹
Water Temperature °F/°C
50/10 70/21 90/32
70/21 7.6-8.9 8.7-10.2 9.6-11.3
1-2.5
80/27 7.7-9.0 9.0-10.6 10.0-11.7
90/32 7.7-9.1 9.4-11.0 10.4-12.2
100/38 7.9-9.3 9.6-11.3 10.7-12.5
110/43 8.1-9.5 9.9-11.6 11.1-12.9
1 Times in minutes
24 HOUR ICE PRODUCTION
Air Temp. Around Ice
Machine °F/°C
Water Temperature °F/°C ¹
50/10 70/21 90/32
70/21 540 480 440
80/27 535 465 425
90/32 530 450 410
100/38 520 440 400
110/43 510 430 390
1 Based on average ice slab weight of 3.4 - 3.9 lb.
OPERATING PRESSURES
Air Temp
Around Ice
Machine
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG ²
Suction
Pressure
PSIG ¹
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10 330-335 60-32 155-180 115-140
70/21 330-335 60-34 160-200 125-145
80/27 330-340 60-34 160-200 125-145
90/32 330-340 65-35 170-200 125-150
100/38 330-345 75-41 170-200 125-150
110/43 330-355 80-42 170-200 125-150
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 330 PSIG
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