Manitowoc QD0422A Spécifications télécharger pdf (Page 98)

90 Part Number STH044 10/13

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.

4. Move toggle switch to the ICE position.

5. The compressor start winding should energize for

less than 1 second. Continued high amperage

draw could indicate:

• Low incoming power supply.

(Check voltage at compressor start-up when load

is greatest.)

• Defective relay.

• Defective capacitor.

• Defective compressor.

6. Verify voltage and replace all start components.

7. If all of the previous tests are satisfactory and the

compressor will not operate or continue to

operate, replace the compressor.

Warning

Disconnect electrical power to the ice machine

before proceeding.

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Manitowoc QD0422A Spécifications Page 98