Welbilt Koolaire KD0270A, Technician'S Handbook, Page: 126 / 136

126 Part Number STH047 Rev01 10/18
KF0250 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
Condenser
°F/°C
Freeze Time Harvest
Time
Water Temperature °F/°C
50/10 70/21 90/32
70/21
12.3-14.0 14.5-16.5 16.5-18.8
1.0-2.5
80/27
13.1-15.5 15.2-17.4 17.5-19.9
90/32
14.1-16.1 18.0-20.5 20.5-23.3
100/38
15.2-17.4 21.2-24.0 24.5-27.8
110/43
16.5-18.8 25.5-29.0 30.4-34.5
Times in minutes
24 Hour Ice Production
Air Temp.
Entering
Condenser
°F/°C
Water Temperature °F/°C
50/10 70/21 90/32
70/21 255 220 195
80/27 240 210 185
90/32 225 180 160
100/38 210 155 135
110/43 195 130 110
Based on average ice slab weight of 2.44 – 2.75 lb (1107 – 1247 g).
Operating Pressures
Air Temp.
Entering
Condenser
°F/°C
Freeze Cycle Harvest Cycle
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
Discharge
Pressure
PSIG
Suction
Pressure
PSIG
50/10 200-255 60-22 165-200 70-95
70/21 200-255 60-23 170-205 70-100
80/27 200-290 60-24 175-210 75-100
90/32 235-320 65-25 200-240 80-105
100/38 260-370 70-31 215-255 85-120
110/43 310-365 80-42 230-270 110-130
Suction pressure drops gradually throughout the freeze cycle