11. EXPLANATION OF COMPONENTS 6. Defroster selector lever This lever is used to remove condensation on the front window during winter or rainy season. Selector lever forward: defrost Selector lever backwards: warms operator’s feet Defroster is available when air outlet slider is in the position shown by decal: A Defroster B Feet 11.11.2 PRECAUTION WHEN USING AIR CONDITIONER During cooling, ventilate the air from time to time. If operator is smoking during cooling, eyes may occasionally smart. In this case, temporarily change the switch to ventilation/cooling to ex- haust the smoke. When cooling for a long time period, select ventilation/cooling once an hour. Avoiding excessive cooling.
If the operator feels somewhat cool when entering a cooled cab, the temperature (temperature difference between external temperature is 5 o to 6 o C(9 o F to 11 o F)) is at the optimum level from a health viewpoint. Adjust the cooling temperature carefully. PC450-ENG 2-32