Cab Heater Operation; Cooling Operation - Hitachi ZAXIS 120-3 class Operator's Manual

Hydraulic
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CAB HEATER OPERATION

1. Operate AUTO switch (9).
According to signals sent from various sensors, the air
conditioner amplifier automatically selects the air flow-in
vents, air suction ports, and air flow-in temperature at the
vent, and controls the blower speed.
2. Operate Temperature Control Switch (11).
Set temperature control switch (11) so that "25.0" is
indicated on LCD (7). Control air temperature inside cab
using this switch as necessary.
3. As Necessary:
• Operate Mode switch (14) to manually select the air vent.
• Operate blower switch (6) to manually control the blower
speed.
• Operate fresh air mode switch (13) to maintain the air
vent in the fresh air circulation mode.
• Operate circulation mode switch (12) to maintain the air
suction port in the circulation mode.
When the A/C indicator is ON, the air conditioner functions as
a dehumidifier. Press A/C switch (8) to turn OFF the dehumidi-
fier function.

COOLING OPERATION

1. Press AUTO Switch (9)
The AUTO and the A/C indicators come ON. Then, the air
temperature at the vent, blower speed, vent locations,
and air suction ports are automatically controlled by the
air conditioner amplifier according to signals sent from
various sensors.
2. Operate Temperature Control Switch (11).
Set temperature control switch (11) so that "25.0" is indi-
cated on LCD (7). Control air temperature inside the cab
using this switch (11) as necessary.
3. As Necessary:
• Operate Mode switch (14) to manually select the air vent.
• Operate blower switch (6) to manually control the blower
speed.
• Operate fresh air mode switch (13) to maintain the air
vent in the fresh air circulation mode.
• Operate circulation mode switch (12) to maintain the air
suction port in the circulation mode.
In case the front window (lower) becomes clouded, manually
close defroster vent (3).
OPERATOR'S STATION
1-62
7
6
14
13
12
7
14
13
12
6
3
8
9
M178-01-079
11
8
9
M178-01-075
11
M1U1-01-025

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