OWNER 爷 S MANUAL JAC HEAVY DUTY TRUCK DE-HUMIDIFIED HEATING 荫 On steep grades, turn the air conditioning off to avoid the possibility of the engine overheating. For de-humidified heating: 荫 During winter months or in periods when the air conditioning is not used regularly, run the air conditioning once every 荫 Turn on the fan control switch. month for a few minutes. 荫 Tum on the air conditioner switch. The air conditioner indicator light should come on at the same time. 荫 This will help circulate the lubricants and keep your system in peak operating condition. Turning off air conditioner 荫 Set the air intake control to "Fresh".
When air conditioner is not used, place the fan switch to OFF position. When the vehicle is parked, set the button to 荫 Set the air flow control to "Face". 荫 Adjust the fan control to the desired speed. 'Recirculation mode" to prevent dust from entering the vehicle. Others 荫 For more rapid action, set the fan at one of the higher speeds. Use of air conditioner for long hours with the button placed at 'Recirculation mode' will contaminate the air inside the 荫 Adjust the temperature control to provide the desired amount of warmth. vehicle. Place the button at "Fresh mode" once in a while. Operation Tips Excessive cooling is not good for health.
The cooling temperature best suit to your health is normally 5 to 6 degrees low 鄄 er than the outside air temperature. (You will feel slightly cool when you enter the vehicle cooled at this temperature.) 荫 If the interior of the caris hot when you first get in, open the windows for a few minutes to expel the hot air. 荫 When you are using the air conditioning system, keep all windows closed to keep hot air out. 荫 When moving slowly, as in heavy traffic, shift to a lower gear. This increases engine speed, which in turn increases the speed of the air conditioning com 鄄 pressor. 58 59