Manitowoc QD0202A, Руководство по обслуживанию

Страница: 149 / 175

Section 7 Refrigeration System
Part No. 80-1100-3
7-37
Q420/450 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
Q420/450 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 9.7-11.4 10.9-12.8 12.0-14.0
1-2.5
80/26.7 10.9-12.8 12.3-14.4 13.3-15.6
90/32.2 12.3-14.4 14.1-16.5 15.5-18.0
100/37.8 14.5-17.0 16.5-19.2 18.3-21.3
Times in minutes
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 530 480 440
80/26.7 480 430 400
90/32.2 430 380 350
100/37.8 370 330 300
Based on average ice slab weight of 4.12 - 4.75lb
Regular cube derate is 7%
Air Temp.
Entering
Condenser
°F/°C
Freeze Cycle Harvest Cycle
Discharg
e
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10.0 195-260 45-30 150-170 75-90
70/21.1 200-260 47-33 165-180 80-100
80/26.7 230-265 50-35 165-185 80-100
90/32.2 260-290 55-36 190-210 90-110
100/37.8 290-340 60-38 215-235 105-125
110/43.3 195-260 45-30 235-255 125-140
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 9.9-11.7 11.4-13.4 12.6-14.8
1-2.5
80/26.7 10.1-11.9 11.7-13.7 13.0-15.2
90/32.2 10.4-12.2 12.0-14.0 13.3-15.6
100/37.8 10.6-12.5 12.3-14.4 13.7-16.0
Times in minutes
Air Temp.
Around Ice
Machine
°F/°C
Water Temperature °F/°C
50/10.0 70/21.1 90/32.2
70/21.1 520 460 420
80/26.7 510 450 410
90/32.2 500 440 400
100/37.8 490 430 390
Based on average ice slab weight of 4.12 - 4.75 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 400 740 2400
Water regulating valve set to maintain 230 PSIG discharge pressure
Air Temp.
Around Ice
Machine
°F/°C
Freeze Cycle Harvest Cycle
Discharg
e
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10.0 235-245 50-35 165-180 85-100
70/21.1 235-245 50-35 165-180 85-100
80/26.7 235-245 50-35 165-180 85-100
90/32.2 235-245 52-35 165-180 85-100
100/37.8 235-245 52-35 165-185 85-100
110/43.3 240-250 55-36 165-185 85-100
Suction pressure drops gradually throughout the freeze cycle