Victory Reach-In Manuale di Servizio Scaricare il pdf (Pagina 80)

Section 7Diagnostics

7-12

Compressor Windings

NOTE: The compressor must be at room

temperature.

1. Disconnect the wires from the compressor

terminals.

2. Check the resistance between terminals C

and R:

Results of Check Action

Resistance See step 5 below

No resistance 1. Verify external

overload is closed.

2. Run winding is open;

replace compressor.

3. Check the resistance between terminals C

and S:

Results of Check Action

Resistance See step 5 below

No resistance Start winding is open;

replace compressor

4. Check the resistance between terminal C

and the compressor shell:

Results of Check Action

Resistance compressor is grounded;

replace compressor

No resistance compressor is not

grounded - OK

5. Check the resistance of the windings. The

resistance reading between terminals S

and R should equal the readings between

terminals C and R, and terminals C and S

added together:

S to R = C to R + C to S

Capacitor Check

Capacitors may show visual evidence of

failure, such as a bulged terminal end or a

ruptured membrane. However, do not assume

a capacitor is good just because there are no

visual signs of failure.

An effective test is to disconnect the leads

from the capacitor and connect them to a

known good capacitor.

Use a capacitor analyzer when checking a

suspect capacitor. Follow the instructions

supplied with the analyzer.

If these capacitor tests prove satisfactory but

the compressor still fails to start, replace the

start relay. The new start relay will eliminate

any faulty electrical characteristics, such as

improper pick-up or drop-out, which cannot

be determined by the tests.

If the new start relay fails to correct the

problem, consider the compressor inoperative

due to internal defects. Replace the

compressor.

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