Manitowoc Ice CM MODEL STH003 User Manual
Page 64
64
COMPRESSOR DRAWING LOCKED ROTOR
The two likely causes of this are:
•
Defective starting component
•
Mechanically seized compressor
To determine which you have:
•
Install high and low side gauges.
•
Try to start the compressor.
•
Watch the pressures closely.
If the pressures do not move, the compressor is
seized. Replace the compressor.
If the pressures move, the compressor is turning slowly
and is not seized. Check the capacitors and relay.
COMPRESSOR DRAWING HIGH AMPS
The continuous amperage draw on start-up should not
be near the maximum fuse size indicated on the serial
tag.
The wiring must be correctly sized to minimize voltage
drop at compressor start-up. The voltage when the
compressor is trying to start must be within
±10% of
the nameplate voltage.
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