Manitowoc J250 User Manual

Section 7 Refrigeration System
7-39
J1000 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
8.8-9.5 10.1-10.9 11.3-12.2
80/26.7
8.9-9.6 10.2-11.0 11.5-12.3
1-2.5
90/32.2
8.9-9.6 10.2-11.0 11.5-12.3
100/37.8
9.0-9.7 10.4-11.1 11.6-12.5
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
1080 960 870
80/26.7
1070 950 860
90/32.2
1070 950 860
100/37.8
1060 940 850
1
Based on average ice slab weight of 7.75 - 8.25 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
840 1650 6600
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 36-18 160-185 65-85
70/21.1
225-235 38-18 165-185 70-85
80/26.7
225-235 40-18 165-185 70-85
90/32.2
225-235 40-20 165-185 70-85
100/37.8
225-235 40-20 165-185 70-85
110/43.3
225-240 40-20 170-190 75-90
1
Suction pressure drops gradually throughout the freeze cycle
J1000 SERIES REMOTE
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
-20/-28.9 to
70/21.1
9.1-9.8 10.6-11.4 11.8-12.6
80/26.7
9.3-10.0 10.4-11.6 12.0-12.8
1-2.5
90/32.2
9.4-10.2 10.8-11.7 12.1-13.0
100/37.8
10.0-10.8 11.6-12.5 13.0-13.9
110/43.3
10.8-11.6 12.6-13.5 14.2-15.2
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
-20/-28.9 to
70/21.1
1050 920 840
80/26.7
1035 910 830
90/32.2
1020 900 820
100/37.8
970 850 770
110/43.3
910 790 710
1
Based on average ice slab weight of 7.75 - 8.25 lb.
2
Regular cube derate is 7%
3
Ratings with JC1095 condenser, dice or half-dice cubes
Operating Pressures
Air Temp. Freeze Cycle Harvest Cycle
Entering
Condenser
°
°°
°F/°
°°
°C
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
-20/-28.9 to
50/10.0
220-250 40-22 180-200 65-90
70/21.1
230-250 40-22 190-200 70-90
80/26.7
240-260 42-22 190-205 70-90
90/32.2
255-265 44-22 195-205 70-90
100/37.8
275-295 44-24 200-210 70-90
110/43.3
280-320 46-26 200-225 75-100
1
Suction pressure drops gradually throughout the freeze cycle

Manitowoc J250 Specifications

General

Brand	Manitowoc
Model	J250
Category	Ice Maker
Language	English