U0310 Self-Contained Water-Cooled - Manitowoc STH042 7/15 Technician's Handbook

U0310 SELF-CONTAINED WATER-COOLED

NOTE: These characteristics may vary depending on
operating conditions.
Data on this page is preliminary and subject to
change.
Cycle Times
Freeze Time + Harvest Time = Total Cycle Time
Air Temp.
Around Ice
Machine
°F/°C
70/21
80/27
90/32
100/38
110/43
Times in minutes
24 Hour Ice Production
Air Temp.
Around Ice
Machine °F/°C
70/21
80/27
90/32
100/38
110/43
Based on average ice slab weight of 2.44 - 2.75 lb (1107 – 1247 g).
Regular cube derate is 7%
Water regulating valve set to maintain 235 PSIG discharge pressure
Condenser water usage = 149 gallons per 100 lbs of ice a 90°F/70°F
Operating Pressures
Air Temp.
Around Ice
Machine
°F/°C
50/10
70/21
80/27
90/32
100/38
110/43
Suction pressure drops gradually throughout the freeze cycle
130
Freeze Time
Water Temperature °F/°C
50/10
11.5-13.2
10.0-11.5
10.2-11.7
10.4-11.9
10.6-12.2
50/10
270
305
300
295
290
Freeze Cycle
Discharge
Pressure
PSIG
230-240
230-240
235-240
235-240
235-250
235-255
70/21
11.3-12.9 12.0-13.7
11.5-13.2 12.3-14.0
12.6-14.3 13.1-15.0
12.6-14.3 13.5-15.4
12.8-14.7 13.8-15.7
Water Temperature °F/°C
70/21
275
270
250
250
245
Suction Discharge
Pressure Pressure
PSIG
50-24
50-25
50-26
55-27
60-27
60-28
Part Number STH042 7/15
Harvest
90/32
90/32
Harvest Cycle
Suction
Pressure
PSIG
150-175
150-175
155-175
165-180
165-180
165-180
Time
1.0-2.5
260
255
240
235
230
PSIG
75-90
75-90
75-95
80-100
80-100
80-100