Discharge Line Temperature Analysis - Welbilt Manitowoc NEO UDE0065A Technician's Handbook

DISCHARGE LINE TEMPERATURE ANALYSIS

GENERAL
Knowing if the discharge line temperature is increasing,
decreasing or remaining constant can be an important
diagnostic tool. Maximum compressor discharge line
temperature on a normally operating ice machine steadily
increases throughout the freeze cycle. Comparing the
temperatures over several cycles will result in a consistent
maximum discharge line temperature.
• Ambient air temperatures affect the maximum
discharge line temperature.
• Higher ambient air temperatures at the condenser
equal higher discharge line temperatures at the
compressor.
• Lower ambient air temperatures at the condenser
equal lower discharge line temperatures at the
compressor.
NOTE: Regardless of ambient temperature, the freeze cycle
discharge line temperature will be higher than 150°F (66°C)
on a normally operating ice machine.
PROCEDURE
Connect a temperature probe on the compressor discharge
line within 6" (15.2 cm) of the compressor. Observe the
discharge line temperature for the last three minutes of
the freeze cycle and record the maximum discharge line
temperature.
176 Part Number 000014797 Rev02 05/19