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SECTION 2 - - CONTROLS, INSTRUMENTS AND OPERATION
AIR CONDITIONING SYSTEM - - INSTRUCTIONS FOR USE
The air conditioning system provides dehumidified
cool air or dehumidified hot air.
It is operated as follows:
CAUTION
When the engine is not running the air conditioner will
not work because the compressor is driven by the
engine.
STARTING
With the engine running and the electric fan on, turn
the control knob (2) fig 62 to start the air conditioning
system.
CAUTION
Always switch the electric fan on before the air
conditioning.
The air conditioning cannot work when the electric
fan is off.
CAUTION
If the air conditioner has been out of use for more
than 30 days, run the engine at idle speed for at least
3 minutes after switching on the air conditioner.
After for a few minutes, the inspection glass on the
top of the dryer filter should be clear and not contain
any bubbles. If this is not the case, stop the system
and contact your dealer.
CAUTION
Before starting the engine, check that the air
conditioning is off.
ADJUSTMENT
NOTE: When working in a very dusty environment,
the cab pressure may have to be increased, by
increasing fan speed to prevent dust from entering
the cab. Doors and windows should be kept closed.
Under certain conditions, it may be desirable to
operate both the air conditioner and heater together,
e.g. to demist the windscreen and side windows on
a cold morning. (The air conditioner, as well as
cooling, also removes humidity from the cab air).
Run the engine to normal operating temperature,
turn the heater control (3) fig. 62 and fan control (1)
to the maximum settings (fully clockwise). Adjust the
swivelling air vents to direct the airflows, as required.
To restore the temperature in the cab after a
prolonged halt in the sun, start the tractor, switch on
the air conditioning and after about a minute open the
rear window to let the hot air escape.
STOPPING
Before stopping the engine, always switch off the air
conditioning system by turning the knob (2) fig. 62
and moving fan control (1) to the off position.
2--29
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