5-9
January 24, 2017
Testing and Adjustment
CLG835H
Air conditioning system test
Testing and Adjustment
Air conditioning system test
Step 1
Park the complete machine on a flat ground, and
check to make sure parking brake is applied.
Start engine, and let a companion to depress the
accelerator so that the engine operates at high
idle speed.
Step 2
Turn on the A/C switch, adjust the air conditioner
to the cooling mode, and control the air supply
speed at high speed by adjusting the air speed
switch. Select the minimum temperature.
Step 3
Keep the air conditioning system operating sta-
bly for 2 min. Observe the end face of A/C com-
pressor belt pulley. In normal circumstances, the
clutch shall be engaged, and the end face of belt
pulley shall rotate along with belt. If the end face
of the pulley is still, then the compressor is out of
work. Confirm the working state of the compres-
sor, then perform the following steps.
Step 4
Check whether the refrigeration function is
normal according to the following steps
●
Check whether outlet air temperature of cab
vent is obviously lower than outside air tem-
perature. If not, the air conditioner system
works abnormally.
●
Observe sight glass beside reservoir. In nor-
mal circumstances, no air bubbles or only
few air bubbles shall be seen through sight
glass. If a large number of air bubbles can be
seen, or refrigerant appears like foam, it
means air conditioning system is out of order.
●
Respectively touch the air inlet part near
upper part of condenser and air outlet part
near lower part by hand, as shown in the fig-
ure below. In normal circumstances, the air
inlet part shall be hot to some extent, and the
air outlet part shall be close to air tempera-
ture. The temperature near air inlet is not
high, which means the refrigerant is insuffi-
cient, or compressor doesn’t work normally; If
the temperature in normal temperature zone
is not obviously different from high tempera-
ture zone, it means condenser has poor cool-
ing. Please clean up the dirt on condenser
surface.
It is suggested to check air conditioning sys-
tem at air temperature above 28°C, since air
conditioning system may not be started nor-
mally at too low air temperature.
The above steps are used for simply judging
whether air conditioning system works
normally and is in good conditions. Where
appropriate, it is more accurate to connect
the pressure gauge for judging. If air
conditioning system works obviously
abnormally, refer to Fault Diagnosis and
Judgment of the instructions for treatment
method
P18A00004
Areas of high-
temperature
Areas of
proximal room
temperature
Summary of Contents for CLG835H
Page 2: ......
Page 4: ...Contents January 24 2017 CLG835H...
Page 6: ...1 2 General Information January 24 2017 CLG835H...
Page 38: ...1 34 Machine Inspection Table January 24 2017 CLG835H...
Page 156: ...3 2 Power Train System January 24 2017 CLG835H...
Page 214: ...3 2 Power Train System January 24 2017 CLG835H...
Page 272: ...3 60 Testing and adjustment January 24 2017 Power Train Test CLG835H...
Page 276: ...4 4 Hydraulic System January 24 2017 CLG835H...
Page 552: ...6 2 Driver s Cab System January 24 2017 CLG835H...
Page 608: ...7 2 Structure January 24 2017 CLG835H...
Page 662: ...8 4 Electrical System January 24 2017 CLG835H...
Page 677: ...8 19 January 24 2017 Structure Function Principle CLG835H Power System P18E00014...
