Manitowoc J250 User Manual

Section 7 Refrigeration System
7-33
J320 SERIES
SELF-CONTAINED AIR-COOLED
NOTE: These characteristics may vary depending on
operating conditions.
Cycle Times
Freeze Time + Harvest Time = Cycle Time
Air Temp. Freeze Time Harvest
Entering
Condenser
Water Temperature °
°°
°F/°
°°
°C
Time
°
°°
°F/°
°°
°C 50/10.0 70/21.1 90/32.2
70/21.1
11.7-13.4 13.1-14.9 14.7-16.8
80/26.7
13.6-15.5 15.1-17.2 17.7-20.2
1-2.5
90/32.2
16.1-18.4 18.6-21.2 21.9-25.0
100/37.8
19.6-22.3 23.3-26.5 26.6-30.3
1
Times in minutes
24 Hour Ice Production
Air Temp.
Entering
Water Temperature °
°°
°F/°
°°
°C
Condenser
°
°°
°F/°
°°
°C
50/10.0 70/21.1 90/32.2
70/21.1
320 290 260
80/26.7
280 250 220
90/32.2
240 210 180
100/37.8
200 170 150
1
Based on average ice slab weight of 2.93 - 3.31 lb.
2
Regular cube derate is 7%
Operating Pressures
Air Temp. Freeze Cycle Harvest Cycle
Entering
Condenser
°
°°
°F/°
°°
°C
Discharge
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 52-38 180-220 90-120
100/37.8
270-360 54-40 200-250 95-140
110/43.3
280-380 56-42 210-260 95-150
1
Suction pressure drops gradually throughout the freeze cycle
J320 SERIES WATER-COOLED
NOTE: These characteristics may vary depending on
operating conditions.
Cycle Times
Freeze Time + Harvest Time = Cycle Time
Air Temp. Freeze Time Harvest
Around Ice
Machine
Water Temperature °
°°
°F/°
°°
°C
Time
°
°°
°F/°
°°
°C 50/10.0 70/21.1 90/32.2
70/21.1
11.9-13.6 13.8-15.8 16.1-18.4
80/26.7
12.1-13.9 14.4-16.5 16.5-18.8
1-2.5
90/32.2
12.6-14.4 15.0-17.1 17.3-19.7
100/37.8
13.1-14.9 15.1-17.2 17.7-20.2
1
Times in minutes
24 Hour Ice Production
Air Temp.
Around Ice
Water Temperature °
°°
°F/°
°°
°C
Machine
°
°°
°F/°
°°
°C
50/10.0 70/21.1 90/32.2
70/21.1
315 275 240
80/26.7
310 265 235
90/32.2
300 255 225
100/37.8
290 250 220
1
Based on average ice slab weight of 2.93 - 3.31 lb.
2
Regular cube derate is 7%
Condenser 90/32.2 Air Temperature Around Ice Machine
Water Water Temperature °
°°
°F/°
°°
°C
Consumption 50/10.0 70/21.1 90/32.2
Gal/24 hours
280 460 2300
1
Water regulating valve set to maintain 230 PSIG discharge
pressure
Operating Pressures
Air Temp. Freeze Cycle Harvest Cycle
Around Ice
Machine
°
°°
°F/°
°°
°C
Discharge
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 50-36 170-210 90-120
110/43.3
225-265 50-36 175-215 95-125
1
Suction pressure drops gradually throughout the freeze cycle

Manitowoc J250 Specifications

General

Brand	Manitowoc
Model	J250
Category	Ice Maker
Language	English