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SYMPTOM
Air Conditioning Not Cooling.
(Continued)
Air Conditioning Not Producing
Sufficient Cooling.
(Sufficient Cooling Defined As
When Air Temperature In Cab,
Measured At Louvered Vent, Can
Be Maintained At 25°F (14°C)
Below Ambient Air Temperature.)
Air Conditioning System Too
Noisy.
*
See your MacDon dealer
** Refer to Windrower Technical Manual
Form # 169017
TROUBLESHOOTING
PROBLEM
Compressor shaft seal leaking.
Clogged screen in receiver-drier;
plugged hose or coil.
Compressor clutch slipping.
Clogged air filters.
Heater circuit is open.
Too little air circulation over
condenser coil; fins clogged with dirt
or insects.
Evaporator fins clogged.
Too little refrigerant in system.
Clogged expansion valve.
Clogged receiver-drier.
Excessive moisture in system.
Air in system.
Thermostat defective or improperly
adjusted.
Blower motor sluggish in operation.
Defective winding or improper
connection in compressor clutch coil
or relay.
Loose or excessively worn drive
belt.
Noisy clutch.
Noisy compressor.
Compressor oil level low.
Blower fan noisy due to excessive
wear.
Excessive charge in system.
Low charge in system.
Excessive moisture in system.
208
SOLUTION
Contact MacDon dealer.
Remove clutch assembly for
service or replacement.
Remove air filters and clean or
replace as necessary.
Close heater valves (1 in cab, 1
at engine).
Clean condenser.
Clean evaporator fins (under cab
floor).
Contact MacDon dealer.
Replace thermostat.
Contact MacDon dealer.
Contact MacDon dealer.
Tighten or replace as required.
Remove clutch for service or
replacement as required.
Check mountings and repair.
Remove compressor for service
or replacement.
Add SP-15 PAG refrigerant oil.
Remove blower motor for service
or replacement as necessary.
Contact MacDon dealer.
Contact MacDon dealer.
(continued next page)
Issue – June 2008
SECTION
*
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7.8.6.1 &
7.8.6.2
5.10.1.1
6.6.3.3
7.8.6.4
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**
*
*
7.9.10.2
**
**
**
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