Peterbilt Medium Duty Truck Owner's Manual - Peterbilt Motors
Peterbilt Medium Duty Truck Owner's Manual - Peterbilt Motors
Peterbilt Medium Duty Truck Owner's Manual - Peterbilt Motors
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Heater and Air Conditioner<br />
HEATER AND AIR CONDITIONER<br />
Introduction<br />
The combination heater-air conditioner provides comfort for<br />
those in the cab through accurate control of the cab environment<br />
in all weather conditions. Regular attention to the items<br />
below will help you keep the heater-air conditioner unit running<br />
well.<br />
Heater<br />
Preventive Maintenance<br />
• Do not permit any open flame in the area.<br />
Even a match or a cigarette lighter may generate<br />
a hazardous quantity of poisonous<br />
gas.<br />
• Do not smoke in the area. Inhaling gaseous<br />
refrigerant through a cigarette may cause<br />
violent illness.<br />
WARNING! Excessive heat may cause the pressurized<br />
components of the air conditioning system<br />
to explode possibly causing death or<br />
personal injury. Never weld, solder, steam clean,<br />
or use a blow torch near any part of the air conditioning<br />
system.<br />
• If a refrigerant leak develops in the presence<br />
of excessive heat or an open flame, hazardous<br />
gases may be generated. These gases<br />
may cause unconsciousness or death. If you<br />
become aware of a refrigerant leak on your<br />
vehicle have your system service immediately<br />
and observe the following precautions:<br />
• Stay away from the hot engine until the<br />
exhaust manifold has cooled.<br />
• Check all heater controls for full-range operation.<br />
• Check hoses, connections, and heater core for condition<br />
and leaks.<br />
• Check the drain pan of the fresh air vent for trapped<br />
water before assuming that there is a leak in the heating<br />
system. If the heater core is leaking, a reliable radiator<br />
shop should be able to repair it.<br />
• Check the heater core for debris blocking the air flow. If<br />
the blower and air controls are functioning properly, yet<br />
the heater is not operating properly, the heater core or<br />
the hot water valves may be clogged or closed. Clean<br />
the heater core if necessary. If the condition persists,<br />
take the vehicle to a <strong>Peterbilt</strong> Dealer for proper heater<br />
service or repair.<br />
– 216 – Y53-6027 <strong>Medium</strong> <strong>Duty</strong> (R05/09)