User Manual - Page 222

For IRT1900N263E.

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222 Part Number: 000015430 Rev 02 5/20
IF0900W
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 9.1-10.8 10.3-12.2 10.9-12.9
1-2.5
80/27 10.2-12.1 10.4-12.3 11.1-13.1
90/32 10.4-12.3 11.3-13.3 11.4-13.5
100/38 11.6-12.5 11.6-13.7 11.9-14.1
110/43 11.3-13.3 12.2-14.5 13.0-15.4
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
70/21 840 755 720
80/27 765 750 710
90/32 750 700 690
100/38 740 680 665
110/43 700 650 615
1 Based on average ice slab weight of 6.2 - 7.2 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
50/10 225-235 45-28 130-160 75-90
70/21 225-235 45-30 130-160 75-90
80/27 230-245 50-30 130-160 75-90
90/32 225-235 55-31 130-160 75-90
100/38 235-250 55-32 135-160 75-95
110/43 235-265 60-32 140-160 75-95
1 Suction pressure drops gradually throughout the freeze cycle
2 Water regulating valve set to maintain 230 psig
3 Condenser Water Usage = 141 gal/100 lb ice @ 90°/70°F
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