icetro IM Series, Technician'S Handbook

Page: 146 / 166

Cycle Times/24-Hour Ice Production/
Refrigerant Pressure Charts
These charts are used as guidelines to verify correct
ice machine operation.
Accurate collection of data is essential to obtain the
correct diagnosis.
•
Production and cycle times are for dice cube - Half
dice cube cycle times can be 2 - 3 minutes faster,
depending on model and ambient temperature.
•
Ice production checks that are within 10% of the
chart are considered normal. This is due to
variances in water and air temperature. Actual
temperatures will seldom match the chart exactly.
•
Zero out manifold gauge set before obtaining
pressure readings to avoid misdiagnosis.
•
Discharge and suction pressure are highest at the
beginning of the cycle. Suction pressure will drop
throughout the cycle. Verify the pressures are
within the range indicated.
•
Record beginning of freeze cycle suction pressure
one minute after water pump energizes.
Charts
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