Manitowoc MII 302 Spécifications télécharger pdf (Page 165)

Part Number STH038 5/12 163

Relay

The relay has a set of contacts that connect and

disconnect the start capacitor from the compressor

start winding. The contacts on the relay are normally

closed (start capacitor in series with the start winding).

The relay senses the voltage generated by the start

winding and opens the contacts as the compressor

motor starts. The contacts remain open until the

compressor is de-energized.

RELAY OPERATION CHECK

1. Disconnect wires from relay terminals.

2. Verify the contacts are closed.

Measure the resistance between terminals 1 and

2. No continuity indicates open contacts. Replace

the relay.

3. Check the relay coil.

Measure the resistance between terminals 2 and

5. No resistance indicates an open coil. Replace

the relay.

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Manitowoc MII 302 Spécifications Page 165