System Functions
Safety, Operation and Maintenance Manual - Aug 2012
3-72
SY115C9/135C/155H Crawler Hydraulic Excavator
3.15.3 A/C operation precautions
Remark:
●
When running the air conditioning system,
always start with the engine running at a
low speed. Avoid starting the air condi-
tioner when the engine is running at a high
speed, or possible damage to the air con-
ditioner may result .
●
If water should get on control panel or sun-
light sensor, an unexpected failure may
result. Always keep these components
clear and free from water. In addition, keep
these components away from naked
fl
ame.
●
For the auto function of the air conditioner
to work properly, always keep the sunlight
sensor clean and free from debris, or it will
in
fl
uence the function of sunlight sensor.
Ventilation
●
When the air conditioner has been operat-
ing for hours, the “fresh air/recirculation
mode” shall be switched to “fresh air mode”
every hour for ventilation.
●
If you smoke when air conditioner is run-
ning, the smoke may hurt your eyes. In
this case, the “fresh air/recirculation mode”
shall be switched to “fresh air mode” in
order to eliminate the smoke through con-
tinuous cooling.
Temperature control
When the compressor is working, set the
temperature (5 or 6
℃
(9 or 10.8
℉
) above
outdoor temperature) that just makes you feel
cool after entering the cab. This temperature
difference is considered as the most healthy
temperature. Therefore, the temperature shall
be adjusted properly.
Inspection and maintenance of air condi-
tioned machine
●
When checking and maintaining the air