Analyzing Discharge Pressure - Welbilt Manitowoc NEO UDE0065A Technician's Handbook

ANALYZING DISCHARGE PRESSURE

1. Determine the ice machine operating conditions:
Air temperature entering condenser
Air temperature around ice machine
Water temperature entering sump trough
2. Refer to "Installation/Visual Inspection Checklist" on
page 100 for ice machine being checked.
Use the operating conditions determined in step 1 to find
the published normal discharge pressures.
Freeze Cycle
Harvest Cycle
3. Perform an actual discharge pressure check.
Beginning of
Cycle
Middle of
Cycle
End of
Cycle
4. Compare the actual discharge pressure (Step 3) with
the published discharge pressure (Step 2).
The discharge pressure is normal when the actual
pressure falls within the published pressure range for the
ice machine's operating conditions. It is normal for the
discharge pressure to be higher at the beginning of the
freeze cycle (when load is greatest), then drops throughout
the freeze cycle.
Part Number 000014797 Rev02 05/19
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Freeze Cycle
PSIG
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Harvest Cycle
PSIG
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