Hitachi ZAXIS 120-3 class, Operator'S Manual

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OPERATOR'S STATION
1-66
• Blower Switch (9)
The blower speed is controlled from Lo to Hi in 4 steps.
When the
button is pressed first, the blower starts
running in the HI mode. Then, each time the but-
ton is pressed, the blower speed is reduced by one step.
The blower speed indicator corresponding to the blower
speed is lit. When the
button is pressed first, the
blower starts running in the LO mode. Then, each time the
button is pressed, the blower speed is increased by
one step. Press blower OFF switch (10) to stop the blower
operation.
• Fresh Air Vent Switch (7)
Changes the air circulation mode. When fresh air vent
switch (7) is pressed, the indicator comes ON and the
fresh air circulation mode is selected, allowing fresh air to
flow in. When fresh air vent switch (7) is pressed again, the
indicator goes OFF and the circulation mode is selected.
CAB HEATER OPERATION
When any mode switches (6) are pressed ( , , ),
warm air will flow out from the corresponding vent. However,
the foot vent mode
is commonly used for cab heating.
Press foot mode switch (6). Set temperature control switch
(8) to the right end position.
Press blower switch (9) to blow warm air out of the foot vent.
Adjust the air temperature in the cab by operating tempera-
ture control switch (8) and blower switch (9). When required
to quickly increase air temperature in the cab, select the air
recirculation mode. However, if air recirculation mode is used
for a long time, the windowpanes will become clouded due to
a difference in temperature between outside and inside the
cab. Occasionally ventilate the cab. (When the fresh air circu-
lation mode is selected, the windowpanes will be prevented
from becoming clouded.)
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