Manitowoc I0320 Especificaciones descargar pdf (Pagina 191)

Part Number STH025 2/14 191

CHECK MOTOR WINDINGS TO GROUND

Check continuity between all three terminals and the

compressor shell or copper refrigeration line. Scrape

metal surface to get good contact. If continuity is

present, the compressor windings are grounded and

the compressor should be replaced.

COMPRESSOR DRAWING LOCKED ROTOR

To determine if the compressor is seized, check the

amp draw while the compressor is trying to start.

The two likely causes of this are a defective starting

component or a mechanically seized compressor.

To determine which you have:

1. Install high and low side gauges.

2. Try to start the compressor.

3. Watch the pressures closely.

A. If the pressures do not move, the compressor

is seized. Replace the compressor.

B. 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.

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Manitowoc I0320 Especificaciones Pagina 191