GUARDS, CAB AND DRIVER’S SEAT 103 The ventilation and heating of the cab serve to reduce the oper- ator’s stress either in the summer and in the winter; these func- tions also serve to eliminate the condensate from the front window, thus ensuring visibility during both work and travel. Ventilation and air change are achieved by means of a 3-speed fan assembled on the outside of the machine, under the cab. The air suction is protected by a filter positioned on the right side of the cab, while the distribution is obtained through a series of adjustable openings with variable delivery (1), either for the side flows and for the flows that serve to defrost and defog the front window.
A radiator having the function to heat the air conveyed into the cab is installed beside the fan; this is used in the cold season and receives the hot water necessary for the heat exchange di- rectly from the engine cooling circuit. The water supply flow is divided or excluded by means of a tap operated by the handwheel (2) positioned on the side dashboard The flow intensity is adjusted by rotating the handwheel clock- wise. The ventilation and heating system can also provide for the recir- culation of the air inside the cab, which is obtained by opening the outlet (3).
This function ensures quicker heating and is very useful when working in areas where air pollution is considerable (tunnels, dusty places, small or badly ventilated rooms, etc.). If the operator deems it necessary, the machine can be equipped with air conditioning system in addition to the ventila- tion and heating system. This is particularly useful in the hot season, when the temperatures are rather high. For further infor- mation on the use of the air conditioning system, see “6.12 AIR CONDITIONER”.
1 1 RWA02900 1 RWA02910 2 0 1 123 3 RWA34860 1 1 RWA02900 2 0 1 123 3 RWA34860 CAUTION • Do not use the air recirculation function for long periods in rainy or cold days, since this would increase the fog- ging of the inside of the windows.