Manitowoc S - S850 Series

Refrigeration System Section 7
7-38
Part Number 80-1480-3
S850 SERIES
Self-Contained Air-Cooled
NOTE: These characteristics may vary depending on
operating conditions.
Cycle Times
Freeze Time + Harvest Time = Total Cycle Time
24 Hour Ice Production
Operating Pressures
S850 SERIES
Self-Contained Water-Cooled
NOTE: These characteristics may vary depending on
operating conditions.
Cycle Times
Freeze Time + Harvest Time = Total Cycle Time
24 Hour Ice Production
Operating Pressures
Air Temp.
Entering
Condenser
°F/°C
Freeze Time
Harvest
Time
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 8.0-9.3 8.9-10.2 9.3-10.7
1-2.5
80/26.7 8.5-9.8 9.4-10.8 9.8-11.3
90/32.2 9.7-11.1 10.9-12.5 11.4-13.1
100/37.8 10.7-12.3 12.1-13.8 12.8-14.6
Times in minutes
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 870 800 770
80/26.7 830 760 730
90/32.2 740 670 640
100/37.8 680 610 580
Based on average ice slab weight of 5.75 - 6.50lb
Regular cube derate is 7%
Air Temp.
Entering
Condenser
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10.0
200-250 40-28 130-145 70-85
70/21.1 200-250 40-28 130-145 70-85
80/26.7 230-275 50-28 150-165 70-90
90/32.2 260-310 54-32 165-185 85-105
100/37.8 300-355 65-32 180-210 105-125
110/43.3 325-405 70-38 215-235 120-150
Suction pressure drops gradually throughout the freeze cycle
Air Temp.
Around Ice
Machine
°F/°C
Freeze Time
Harvest
Time
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 7.9-9.1 8.7-10.1 9.8-11.3
1-2.5
80/26.7 8.0-9.3 8.9-10.2 10.0-11.5
90/32.2 8.1-9.4 9.0-10.3 10.2-11.7
100/37.8 8.2-9.5 9.1-10.5 10.3-11.9
Times in minutes
Air Temp.
Around Ice
Machine
°F/°C
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 880 810 730
80/26.7 870 800 720
90/32.2 860 790 710
100/37.8 850 780 700
Based on average ice slab weight of 5.75- 6.50lb
Regular cube derate is 7%
Condenser
Water
Consumption
90/32.2 Air Temperature
Around Ice Machine
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
Gal/24 hours 690 1420 5200
Water regulating valve set to maintain 240 PSIG discharge pressure
Air Temp.
Around Ice
Machine
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10.0
225-235 46-28 150-160 75-90
70/21.1 225-235 46-28 150-160 75-90
80/26.7 225-240 50-30 155-175 80-95
90/32.2 230-270 60-30 155-185 85-105
100/37.8 240-275 60-30 165-185 90-110
110/43.3 245-280 60-30 175-190 95-115
Suction pressure drops gradually throughout the freeze cycle