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荫 On steep grades, turn the air conditioning off to avoid the possibility of the engine overheating. 荫 During winter months or in periods when the air conditioning is not used regularly, run the air conditioning once every month for a few minutes. 荫 This will help circulate the lubricants and keep your system in peak operating condition. Turning off air conditioner 59 58 DE-HUMIDIFIED HEATING 荫 Turn on the fan control switch. 荫 Tum on the air conditioner switch. The air conditioner indicator light should come on at the same time. 荫 Set the air intake control to "Fresh". 荫 Set the air flow control to "Face". 荫 Adjust the fan control to the desired speed. 荫 For more rapid action, set the fan at one of the higher speeds. 荫 Adjust the temperature control to provide the desired amount of warmth. Operation Tips 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 OWNER爷S MANUAL JAC HEAVY DUTY TRUCK |