User Manual - Page 207

For IRT1900N263E.

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Part Number: 000015430 Rev 02 5/20 207
IT0420W
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 9.3-10.8 10.2-11.9 11.6-13.5
1-2.5
80/27 9.5-11.1 10.4-12.2 11.7-13.7
90/32 9.8-11.4 10.7-12.5 11.9-13.9
100/38 10.0-11.7 11.1-12.9 12.5-14.5
110/43 10.3-12.0 11.4-13.3 12.3-14.3
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
70/21 455 420 375
80/27 445 410 370
90/32 435 400 365
100/38 425 390 350
110/43 415 380 355
1 Based on average ice slab weight of 3.40 - 3.90 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 70-38 155-180 120-145
70/21 330-340 70-39 175-195 130-150
80/27 330-345 70-40 175-200 130-150
90/32 330-345 75-40 175-200 130-150
100/38 330-350 75-44 175-200 130-150
110/43 330-350 75-45 175-200 135-150
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 330 psig
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