OWNER 爷 S MANUAL JAC HEAVY DUTY TRUCK FAN SPEED CONTROL(BLOWER CONTROL) AIR CONDITIONING (If installed) This is used to turn the blower fan on and off and to select the fan speed. Air Conditioning Switch The blower fan speed, and the volume of air delivered from the system, may be controlled manually by setting the blow 鄄 er control between the "1" and "4' position. The air conditioning is turned on by pushing the button. Heating controls 1. For normal heating operation, set the air intake control to the "Fresh" position and the air flow control to 'Floor". 2. For faster heating, the air intake control should be in the 'Recirculation" position. 3.
If the windows fog up, set the air flow control to the 'Def" (defroster) position and the air intake control to "Fresh". AIR CONDITIONING OPERATION 4. For maximum heat, move the temperature control to "Warm". Cooling BI-LEVEL HEATING Your JAC is equipped with bi-level heating controls. This makes it possible to have cooler air from the dashboard vents To use the air conditioning to cool interior: and warmer air from the floor outlets at the same time. To use this feature: 荫 Turn on the fan control switch. 荫 Turn on the air conditioning switch by pushing in on the switch. The air con 鄄 1. Set the air flow control at the "Bi-Level" position. 2.
Set the temperature control between "Cool" and "Warm". ditioning indicator light should come on at the same time. 3. Adjust the fan speed control to the desired speed. 荫 Set the air intake control to "Recirculation". VENTILATION 荫 Set the temperature control to "Cool". ("Cool" provides maximum cooling. The temperature may be moderated by moving the control toward "Warm".) To operate the ventilation system: 1. To direct all intake air to the dashboard vents, set the airflow control to "Face". 荫 Adjust the fan control to the desired speed. 2. Set the temperature control between "Cool' and "Warm".
For greater cooling, turn the fan control to one of the higher speeds or tem 鄄 porarily select the "Recirc' position on the air intake control. 3. Adjust the fan speed control to the desired speed. 56 57