MacDon 9000 - Trouble Shooting; Cab Air System

TROUBLE SHOOTING
PROBLEM
CAUSE
REMEDY
REF.
Cab Air System
Blower fan will not run.
Burned out motor.
Replace motor.
*
Burned out switch.
Replace switch.
*
Motor shaft tight or Repair motor.
*
bearings worn.
Faulty wiring - loose
or Repair or replace
*
broken. wiring.
Blower fan operating
Dirty fresh air filter. Clean filter.
108
but no air coming into
cab.
Air flow passage Remove blockage.
blocked.
Heater not heating.
Defective thermostat in
Replace thermostat.
*
engine water outlet
manifold.
Heater temperature
Replace control.
*
control defective.
No thermostat in engine Install thermostat.
*
water outlet manifold.
Odour from air louvres. Plugged drainage hose. Blow out hose with
compressed air.
Dirty filters.
Clean filters.
108,109
Air conditioning not
Low refrigerant level.
Add refrigerant
109
cooling.
Electrical switch con-
Replace thermostat.
*
tacts in thermostat
burned excessively,
or
sensing element defec-
tive.
Clutch coil
or relay
Check current flow
to
*
burned out or discon-
clutch
or relay. Replace
nected.
if inoperative.
Condenser fins
Clean condenser.
77
plugged.
Blower
motor discon-
Check current flow
to
*
nected or burned out.
blower motor. Repair
or
replace if inoperative.
Loose
or broken drive
belt.
Replace drive belt
and/
or tighten to specs.
53,65
* See your Windrower Dealer.
114