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MAINTENANCE
Check Air Conditioner
--- every 250 hours
Check pipe connections for refrigerant gas leakage
If oil seepage is found around pipe connections, it indicates
possible gas leakage.
Check Refrigerant
Start the engine and run it at approximately 1500 min
−1
(rpm). Turn the air conditioner switch to ON. Set the fan
switch to HI and set the temperature control switch to the
coolest position (18 °C on the monitor screen). Operate the
air conditioner 2 to 3 minutes. Check if cool air comes out
from the vent in the cab.
Type and amount of refrigerant when shipping the
machine
Model Type Amount
ZX120-6 class
HFC134a
0.85±0.05 kg
ZX160-6, 200-6, 240-6,
300-6 class
0.85±0.05 kg
ZX330-6 class 0.90±0.05 kg
Check the condenser
If the condenser fins become clogged with dirt or insects,
the cooling effect will be decreased.
Be sure to keep it clean at all times. (Refer to "Clean
Radiator/Oil Cooler/Inter Cooler Core" in Maintenance
Chapter.)
Check compressor
After operating the air conditioner for 5 to 10 minutes,
touch both the high pressure pipe and the low pressure
pipe.
If normal, the high pressure side pipe will be hot, and the
low pressure side cold.
Check mounting bolts for looseness
Confirm that the compressor mounting bolts and other
mounting/fastening bolts are securely tightened.
Oil Seepage
Detail
M157-07-041
M1CD-07-038
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