S320 Series - Manitowoc S Service Manual

Refrigeration System

S320 SERIES

Self-Contained Air-Cooled
NOTE: These characteristics may vary depending on
operating conditions.
Cycle Times
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Entering
Water Temperature °F/°C
Condenser
50/10.0
°F/°C
70/21.1 12.3-14.0
80/26.7 13.1-14.9
90/32.2 15.2-17.3
100/37.8 18.0-20.4
Times in minutes
24 Hour Ice Production
Air Temp. Water Temperature °F/°C
Entering
Condenser
50/10.0
°F/°C
70/21.1 340
80/26.7 320
90/32.2 280
100/37.8 240
Based on average ice slab weight of 3.25 - 3.65 lb
Operating Pressures
Freeze Cycle
Air Temp.
Entering
Discharge
Condenser
Pressure
°F/°C
PSIG
50/10.0 195-260
70/21.1 195-260
80/26.7 215-295
90/32.2 240-320
100/37.8 290-365
110/43.3 325-415
Suction pressure drops gradually throughout the freeze cycle
7-32
Freeze Time
70/21.1 90/32.2
13.1-14.9 14.1-16.0
14.6-16.6 15.8-18.0
17.2-19.5 18.0-20.4
19.8-22.4 20.8-23.5
70/21.1 90/32.2
320
290
250
220
Harvest Cycle
Suction Discharge
Pressure Pressure Pressure
PSIG PSIG
60-34 130-160
70-36 130-165
75-36 140-165
80-38 155-180
90-40 175-215
95-42 200-230
S320 SERIES
Self-Contained Water-Cooled
NOTE: These characteristics may vary depending on
operating conditions.
Cycle Times
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Harvest Around Ice
Time Machine
°F/°C
70/21.1
80/26.7
1-2.5
90/32.2
100/37.8
Times in minutes
24 Hour Ice Production
Air Temp.
Around Ice
Machine
°F/°C
70/21.1
300
80/26.7
270
90/32.2
240
100/37.8
210
Based on average ice slab weight of 3.25 - 3.65 lb
Condenser
Water
Consumption
Suction
Gal / per
100 lbs of ice
PSIG
Water regulating valve set to maintain 230 PSIG discharge pressure
80-115
90-120
Operating Pressures
110-125
120-135
Air Temp.
14-165
Around Ice
160-185 Machine
°F/°C
50/10.0
70/21.1
80/26.7
90/32.2
100/37.8
110/43.3
Suction pressure drops gradually throughout the freeze cycle
Freeze Time
Water Temperature °F/°C
50/10.0 70/21.1
12.7-14.4 13.6-15.5 15.2-17.3
13.1-14.9 14.1-16.0 15.2-17.3
13.6-15.5 14.6-16.6 15.8-18.0
14.1-16.0 15.2-17.3 16.5-18.7
Water Temperature °F/°C
50/10.0 70/21.1
330 310
320 300
310 290
300 280
90/32.2 Air Temperature
Around Ice Machine
Water Temperature °F/°C
59/15.0 70/21.1
90 160
Freeze Cycle
Discharge Suction Discharge
Pressure Pressure Pressure
PSIG PSIG
225-245 60-38
225-245 68-38
225-250 78-39
225-255 80-40
225-260 82-41
225-265 85-42
Part Number 80-1480-3
Section 7
Harvest
Time
90/32.2
1-2.5
90/32.2
280
280
270
260
90/32.2
1010
Harvest Cycle
Suction
Pressure
PSIG PSIG
150-185 85-105
150-190 100-120
155-195 110-145
155-200 115-145
155-205 120-150
155-210 120-150