Manitowoc Ice STH003 manual Compressor Drawing Locked Rotor, Compressor Drawing High Amps

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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