JLG 4017 Operator Manual - Manual (Page 50)

Section 2 - Pre-Operation and Controls
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Heater and Air Conditioner (optional) Controls
1. Fan Speed: 3-position rotary switch for heater and air conditioner.
2. Temperature Control: Adjustable rotary switch.
3. Air Conditioner (optional): On/Off switch.
4. Recirculate (optional): On/Off switch used for optimum air conditioner
performance. In this mode no outside air is drawn into the cab.
5. Round Vent
6. Air Louver
Heater
Turn the temperature control to the desired temperature and set the fan speed.
Adjust the air flow through the air louvers and round vents.
Air Conditioner (optional)
Turn on the air conditioner and set the fan speed. Activate the recirculation control to
cool the cab more quickly. Adjust the air flow through the air louvers and round
vents.
Note: When the windows are misted over, run the air conditioner and heater at the
same time.
Defrosting
Direct the flow of air through the louvers and the left front round vent toward the
windshield. Close the other two round vents.