MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company

Operating Instructions
HEATING AND AIR CONDITIONING
Heating and Air Conditioning
A B C
Introduction
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WARNING! Do not drive with your visibility
reduced by fog, condensation, or frost on the
windshield. Your view may be obscured, which
could result in an injury accident. For clear visibility
and safe driving it is extremely important
for you to follow the instructions on the use of
the ventilation/heating and defogging/defrosting
system. If in doubt, consult your dealer. Maximum
heating output and fast defrosting can be
obtained only after the engine has reached operating
temperature.
Internal air circulation control is provided by three sets of
outlets:
• Front outlets on the dashboard panel, with directional
louvers
• Floor outlets under the dashboard
• Window defrost vents on the dashboard
E
0
AC
OFF
ON
4
FRESH
RECIRC
02593
Heater and Air Conditioner Controls
WARNING! Excessive heat may cause the pressurized
components of the air conditioning system
to explode. Never weld, solder, steam clean,
or use a blow torch near any part of the air conditioning
system.
• If a refrigerant leak develops in the presence of
excessive heat or an open flame, hazardous gases
may be generated. These gases may cause unconsciousness
or death. If you become aware of a refrig-
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Model 330 PB1318 3/01 – 37 –