Tips For Optimal Air Conditioner Usage - Hitachi ZAXIS 450LC-3 Operator's Manual

TIPS FOR OPTIMAL AIR CONDITIONER USAGE

For Rapid Cooling
Temperature in the cab may rise over 80°C (176°F) when the
machine is exposed to sun light in the summer. For rapid
cooling, ventilate air in the cab first.
After starting the engine, set the temperature control to
maximum cooling (18°C, 65°F) using temperature control
switch (9). Then turn circulation mode switch (14) ON (the
indicator lights).
Select the front/rear/defroster
mode switch (10). Set the blower speed to the maximum
flow rate (6 segments lit) by operating blower switch (7).
Then, turn air conditioner switch (12) ON (the indicator
lights).
After running the engine at a little over 1000 min -1 for a
few minutes, press AUTO switch (11) and close the windows.
When Windows Become Clouded
If the insides of the windows become clouded during rainy
weather or on humid days, operate the air conditioner to
aid in keeping the windows clear. When the atmosphere is
very damp, and if the air conditioner has run excessively,
the outside of the windows may become clouded. If
this happens, turn off the air conditioner to adjust the
temperature in the cab.
Off-Season Air Conditioner Maintenance
To protect each part of the compressor from a lack of
lubricant, operate the air conditioner at least once a month
for several minutes with the engine running at a slow speed
during off-season. When the cab temperature is lower than
15°C (59°F), the air conditioner may not operate. If this
happens, warm the cab using the heater first.
IMPORTANT: • Do not suddenly increase the engine
speed.
• Keep any flames away from the control
panel.
• Refer to the item "Check Air Conditioner
Filter" in the Maintenance Section for
maintenance of the air conditioner filters.
• Always clean the auto air conditioner
sensor for effective air conditioner
performance. Avoid placing any
obstructions around the sensor.
OPERATOR'S STATION
vent mode by operating
1-72
7 8
14
Air Conditioner Sensor
9 10 11
12
M178-01-017
M1J1-01-028