89
GUARDS AND DRIVER’S SEAT
3.5.4 VENTILATION AND HEATING
The ventilation and heating of the cab serve to reduce the opera-
tor’s stress either in summer and in winter; these functions also
serve to eliminate the condensate from the front window, thus en-
suring visibility during both work and travel.
Ventilation and air change are achieved by means of a three-
speed fan positioned inside the cab, under the seat support. The
ventilation intensity is adjusted through the switch (2) positioned
on the left console.
The ventilation and heating system requires air suction from both
inside and outside the cab.
Air suction from the outside is protected by a filter positioned on
the right side of the cab.
Air distribution is achieved by means of a series of orientable out-
lets (1) with adjustable capacity for the inner flow and for the flows
that have the function to defrost and defog the front and rear win-
dows.
A radiator having the function to heat the air conveyed into the
cab is installed beside the fan; it is used in the cold season and
receives the hot water necessary for the heat exchange directly
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 left console. The
intensity of the flow is adjusted by turning the handwheel clock-
wise.
The ventilation and heating system includes also the inside air re-
circulation function. This function ensures more rapid heating and
is very useful when the machine is operated in conditions of ex-
treme pollution (tunnels, very dusty places, small or closed plac-
es, etc.). The recirculation of air is obtained by turning the
handwheel (4) positioned on the rear right side of the cab console
completely clockwise.
• Do not use the air recirculation function continuously in
rainy or cold days, since this would increase the fogging
up of windows on the inside.
RWA19000
1
RYA14170
1
1
RYA14180
1
RYA14190
2
3
RYA14200
4
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