MAINTENANCE
7-87
Check Air Conditioner (Cab equipped machine)
--- daily
ZX33U-5A Serial No. 030001-031466
ZX38U-5A Serial No. 050001-050476
ZX48U-5A Serial No. 030001-031086
ZX55U-5A Serial No. 050001-050782
ZX65USB-5A Serial No. 020001 and up
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 at approximately 1500 min
-1
(rpm).
Turn the air conditioner switch to ON. Set the blower switch
to HI and set the temperature control switch to the coolest
position (18 °C on the monitor screen). Operate the air
conditioner for 2 to 3 minutes. Check if cool air comes out
from the vent in the cab.
Kind of refrigerant and amount when shipping the
machine
Model
Type
Amount
ZX33U-5A, 38U-5A,
48U-5A, 55U-5A
HFC134a
0.65±0.05 kg
ZX65USB-5A
0.85±0.05 kg
IMPORTANT: Do not dispose FREON gas into the
atmosphere to prevent depletion of the ozone layer
and global warming.
Check the condenser
If the condenser fins become clogged with dirt or insects,
the cooling effect will be decreased.
Be sure to keep them clean at all times. (Refer to "Clean
Radiator/Oil Cooler Core" in Maintenance Section.)
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.
M107-01-050
No Refrigerant
Empty
Insufficient
Quantity
Almost clear. A few
bubbles may appear
when the engine
speed is raised or
lowered.
Sufficient
Quantity
2
1
MADB-07-038
Summary of Contents for Zaxis 33U-5A
Page 4: ......
Page 66: ...SAFETY SIGNS S 54 MEMO ...
Page 104: ...OPERATOR S STATION 1 38 Radio Cab equipped machine Optional 1 Radio Clock 1 MADB 01 005 ...
Page 114: ...BREAK IN 2 2 MEMO ...
Page 160: ...OPERATING THE MACHINE 5 28 MEMO ...
Page 270: ...MAINTENANCE 7 102 MEMO ...
Page 272: ...MAINTENANCE UNDER SPECIAL ENVIRONMENTAL CONDITIONS 9 2 MEMO ...
Page 274: ...STORAGE 10 2 MEMO ...