Macdon 9250 SP User Manual download pdf (Page 121)

Form # 46584 Issue 11/06 Web Rev_01

119

TROUBLE SHOOTING

SYMPTOM

PROBLEM

SOLUTION

REF.

Air conditioning not

producing sufficient

cooling (continued).

Clogged expansion

valve.

Recover system

refrigerant and replace

valve. Then, evacuate

and charge system.

*

Clogged receiver-drier.

Recover system

refrigerant and replace

receiver-drier. Then

evacuate and charge

system.

*

Excessive moisture in

system.

Recover system

refrigerant and replace

receiver-drier. Then

evacuate and charge

system.

*

Air in system.

Recover refrigerant,

evacuate and charge

system.

*

Thermostat defective or

improperly adjusted.

Replace thermostat.

*

Blower motor sluggish

in operation.

Remove motor for

service/replacement.

*

Air conditioning system

too noisy.

Defective winding or

improper connection in

compressor clutch coil

or relay.

Repair or replace as

necessary.

*

Loose or excessively

worn drive belt.

Tighten or replace as

required.

66

Noisy clutch.

Remove clutch for serv-

ice or replacement as

required.

*

Noisy compressor.

Check mountings and

repair. Remove

compressor for service

or replacement.

*

Compressor oil level

low.

Add SP-20 PAG refrig-

erant oil.

*

Blower fan noisy due to

excessive wear.

Remove blower motor

for service or replace-

ment as necessary.

*

Excessive charge in

system.

Discharge excess

refrigerant until pressure

drops within specs.

(Always recover

discharged refrigerant.)

*

Low charge in system.

Check system for leaks,

charge system.

* See your Windrower dealer.

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