Manitowoc QD0892N User Manual

Section 7 Refrigeration System
Part No. 80-1100-3 7-33
Cycle Time/24 Hour Ice Production/
Refrigerant Pressure Charts
Q200 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
Q200 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 11.5-13.5 13.8-16.1 15.2-17.8
1.0-2.5
80/26.7 13.8-16.1 15.6-18.2 17.0-19.8
90/32.2 16.1-18.7 18.6-21.6 20.5-23.8
100/37.8 19.8-23.0 23.6-27.4 25.5-29.6
Times in minutes
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 270 230 210
80/26.7 230 205 190
90/32.2 200 175 160
100/37.8 165 140 130
Based on average ice slab weight of 2.44 - 2.81 lb
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
195-260 60-28 120-190 85-110
70/21.1 195-260 60-28 120-190 85-110
80/26.7 210-270 65-28 160-190 90-110
90/32.2 240-290 70-30 190-210 100-120
100/37.8 270-330 70-35 220-240 120-140
110/43.3 310-390 85-40 250-270 120-150
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 11.5-13.5 12.8-15.0 14.5-16.9
1-2.5
80/26.7 12.0-14.1 13.5-15.7 15.2-17.8
90/32.2 12.6-14.7 14.1-16.5 16.1-18.7
100/37.8 13.1-15.4 14.8-17.3 17.0-19.8
Times in minutes
Air Temp.
Around Ice
Machine
°F/°C
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 270 245 220
80/26.7 260 235 210
90/32.2 250 225 200
100/37.8 240 215 190
Based on average ice slab weight of 2.44 - 2.81 lb
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 240 480 2100
Water regulating valve set to maintain 230 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 60-28 170-200 90-110
70/21.1 225-235 60-28 170-200 90-110
80/26.7 225-240 60-28 175-205 90-110
90/32.2 225-245 65-30 175-205 90-115
100/37.8 225-250 70-32 180-210 90-115
110/43.3 225-260 75-34 185-215 90-120
Suction pressure drops gradually throughout the freeze cycle

Manitowoc QD0892N Specifications

General

Brand	Manitowoc
Model	QD0892N
Category	Ice Maker
Language	English