https://www.truck-manuals.net/mack/ 74 INSTRUMENTS AND CONTROLS CAB CLIMATE CONTROL
C0029694
1. Blower Control Knob
4. Fresh/Recirculation Button
2. Mode Knob
5. A/C ON/OFF Button
3. Temperature Control Knob 1. Blower Control Knob — Controls the amount of air delivered through the vents. Move lever for desired fan speed from OFF (far left) to HIGH (far right). 2. Mode Selection Knob — Allows the operator to choose the air direction. The FOOT position delivers air to the floor outlets, while the DEF position directs air to the windshield for defogging and/or defrosting. The FACE position delivers air to the vents on the dash panel for the upper body. 3. Temperature Control Knob — Controls the temperature of air from COOL (far left) to HOT (far right). 4. Fresh/Recirculation Button — This button lets the operator choose between fresh air (from the outside) and recirculated air (within the cab). 5. Air Conditioner On/Off Button — Activates the air conditioning system.
CAUTION If your vehicle is equipped with air conditioning, the air conditioner unit should be run for FIVE MINUTES at least ONCE A WEEK throughout the year to keep the moving parts well lubricated.
