S450 Series - Manitowoc S Service Manual

Refrigeration System

S450 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 9.4-10.0
80/26.7 9.9-10.6
90/32.2 10.4-11.1
Times in minutes
24 Hour Ice Production
Air Temp. Water Temperature °F/°C
Entering
Condenser
50/10.0
°F/°C
70/21.1 450
80/26.7 430
90/32.2 410
Based on average ice slab weight of 3.40 - 3.60 lb
Operating Pressures
Freeze Cycle
Air Temp.
Entering
Discharge
Condenser
Pressure
°F/°C
PSIG
50/10.0 195-255
70/21.1 195-270
80/26.7 220-285
90/32.2 250-320
100/37.8 290-390
110/43.3 320-400
Suction pressure drops gradually throughout the freeze cycle
7-34
Freeze Time
70/21.1 90/32.2
10.2-10.8 11.1-11.8
10.7-11.5 11.7-12.5
11.4-12.1 12.5-13.3
70/21.1 90/32.2
420
400
380
Harvest Cycle
Suction Discharge
Pressure Pressure Pressure
PSIG PSIG
50-30 125-150
60-30 135-190
62-32 135-195
70-34 175-195
75-35 190-215
80-37 225-250
S450 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
1-2.5 80/26.7
90/32.2
Times in minutes
24 Hour Ice Production
Air Temp.
Around Ice
Machine
°F/°C
70/21.1
390
80/26.7
370
90/32.2
350
Based on average ice slab weight of 3.40 - 3.60 lb
Condenser
Water
Consumption
Suction
Gal / per
100 lbs of ice
PSIG
Water regulating valve set to maintain 240 PSIG discharge pressure
70-90
80-115
Operating Pressures
80-115
85-115
Air Temp.
115-140
Around Ice
130-170 Machine
°F/°C
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
8.9-9.5 9.6-10.3
9.1-9.8 9.9-10.6
9.4-10.0 10.2-10.8
Water Temperature °F/°C
50/10.0 70/21.1
470 440
460 430
450 420
90/32.2 Air Temperature
Around Ice Machine
Water Temperature °F/°C
59/15.0 70/21.1
NA 200
Freeze Cycle
Discharge Suction Discharge
Pressure Pressure Pressure
PSIG PSIG
225-265 52-30
230-265 56-30
230-270 62-31
235-275 65-31
240-280 65-32
Part Number 80-1480-3
Section 7
Harvest
Time
90/32.2
10.7-11.5
11.1-11.8 1-2.5
11.4-12.1
90/32.2
400
390
380
90/32.2
NA
Harvest Cycle
Suction
Pressure
PSIG PSIG
160-190 85-100
170-190 90-110
170-195 95-115
170-200 100-120
170-205 100-120