Buhler 535 - Manual (Page 208)

435/485/535
5-3
Problem
Dust enters the cab
Pressurizer air flow low
Cab windows fog up
Heating system does not
heat
Air-conditioner does not
cool
Correction
Check seal condition.
Clean or replace filter.
Replace filter.
Seal air leak(s).
Clean or replace filter.
Contact Buhler Versatile dealer.
Position air vents toward windows.
Use air-conditioner system and
recirculation control along with the
heating system to dehumidify cab air.
Check air-conditioner drain hoses for
restriction.
Contact Buhler Versatile dealer.
Contact Buhler Versatile dealer.
Turn on heater valve at engine and
adjust temperature control knob to
the heat position.
Contact Buhler Versatile dealer.
Clean radiator, oil cooler, and
condenser.
Check sight glass for bubbles.
Contact your Buhler Versatile dealer.
Check belt tension and belt condition
Turn temperature control knob fully
counterclockwise for maximum
cooling. Shut off heater hose valve
at engine.
Replace fuse or relay.
Possible Cause
Improper seal around filter element.
Plugged filter.
Defective filter.
Excessive air leak(s) in cab floor,
windows, or door.
Plugged filter.
Heater core or evaporator core
plugged.
Excessive moisture in cab air system.
Defective engine thermostats.
Heater core plugged.
Heater valve shut off at engine.
Cab heater valve not functioning.
Condenser plugged.
Low refrigerant.
Compressor belt slipping or damaged.
Heater control turned on.
Fuse or relay defective.
Section 5 - Troubleshooting
Cab
Cab