OPERATOR'S MANUAL

Operating Instructions Heating and Air Conditioning
Model 330 PB1318 3/01 – 39 –
Heating
To heat the cab: select the desired air direction and circulat-
ing mode (B and D) and set the temperature knob (C) to hot
(red position on the control). Adjust the fan speed (A) as
desired.
CAUTION: During extreme cold weather, do not
blow hot air onto cold windshields. This could
crack the glass. Turn the air direction lever to
Defrost and adjust the fan speed accordingly
while the engine warms. If the engine is already
warm, move the temperature selector to Cool,
then gradually increase the temperature when
you see that the windshield is starting to warm
up.
Defogging
NOTE: The air conditioning system is active when
the Defrost mode is selected.
To defog the windshield: select air direction mode 4
or 5 and turn the fan speed switch (A) to high. Set the tem-
perature knob (C) to hot (red position on the control). The air
conditioner (if equipped) is automatically activated to remove
moisture from the cab. After the windshield is clear, adjust
the controls as desired.
Cooling
To cool the cab: turn on the air conditioner (if equipped)
(switch E), set the temperature knob (C) to cool (blue side),
and the fan (A) to high until the cab becomes cool—adjust as
desired.
HEATING A/C CONTROL
CONTROLS
HEATING COOLING DEFOGGING
MAX NML MAX NML MAX NML
Fan Speed (A) High (4) Adjust High (4) Adjust High (4) Adjust
Air Direction
Mode (B) Panel
(1)
Panel
or Bi-
Level
(2)
Adjust Adjust
Defrost
(5)
Defrost
or Bi-
Level (4)
Temperature (C) Warm Adjust Cool Adjust Warm Adjust
Air Circulation
Mode (D)
Recirc Fresh Record Fresh Recirc Fresh
Air Conditioner -
AC (E)
OFF OFF ON ON ——