Manitowoc NEO, Руководство техника

Страница: 121 / 136

Part Number STH042 3/14 121
Charts
Cycle Times, 24 Hr. Ice Production and
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 1-2 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.
• Regular cube production derate is 7%.
• Refer to “Operational Analysis Chart” for the list of
data that must be collected for refrigeration
diagnostics.
• Zero out manifold gauge set before obtaining
pressure readings to avoid mis-diagnosis.
• 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 the water pump energizes.
• 50Hz dice and half dice production derate is 12%.
• 50HZ regular cube production derate is 14%.