Operation - Section 3 OM3037 Page 3-16 Operating Instructions HEATER / AIR CONDITIONER COMPARTMENT AND HEATER/AIR CONDITIONER VENTS CONTROLS These heater/air conditioner vents (6, Figure 3-4) may The heater/air conditioner compartment contains the be rotated 360°. Air flow through the vents is controlled heater/air conditioner controls (6, Figure 3-1) and the by manually opening/closing or turning the louvers. heater/air conditioner components, such as the blower motor assembly and heater coils. Optimum cab air cli- mate can be selected by using the following controls in various combinations.
DEFROSTER VENT CONTROL SWITCH The defroster control switch (1, Figure 3-4) directs heated air for windshield defrosting. “Down” position of the toggle switch is OFF. “Up” position of the toggle switch is On. HEAT VENT CONTROL SWITCH The heater control (2, Figure 3-4) directs heated air to the cab floor for heating of the cab. “Down” position of the toggle switch is OFF. “Up” position of the toggle switch is On. TEMPERATURE CONTROL KNOB The temperature control knob (3, Figure 3-4) adjusts the outlet air temperature of the heater/air conditioner. Rotating the knob counterclockwise (blue arrow) will select cooler temperatures. Full counterclockwise posi- tion is the coldest air setting.
Rotating the knob clockwise (red arrow) will select warmer temperatures. Full clockwise position is the warmest heater setting. FAN CONTROL KNOB The fan control knob (4, Figure 3-4) controls the 3-speed heater/air conditioner internal fan unit. Full counterclockwise is the “Off” position. Rotating the knob clockwise selects increasingly higher fan speeds. HEATER/AIR CONDITIONER SELECTOR SWITCH The selector switch (5, Figure 3-4) allows the operator to turn the heater and air conditioner off or select heat or air conditioner as required. “Center” position of the FIGURE 3-4. A/C & HEATER CONTROLS switch turns the heat and A/C systems ON. Move the switch to the “left” to select air conditioner.
Move the switch to the “right” to select heater.