SANY LATIN AMERICA
4-148
SY195/205/215/225C9 Crawler Hydraulic Excavator
Structure and Function
Shop Manual - June 2013
ZX215-1002161
H I
1300~1500rpm
ON
Hi-press. valve (OFF)
Manifold pressure
gauge
Start the engine
ZX215-1002162
Lo
Hi
Lo
Hi
Valve
Fluorine cylinder
(never placed upside down)
Compressor
running
Hi-press. valve (OFF)
(Never open it)
Lo-press.
valve (ON)
Fluorine cylinder
valve (ON)
Lo-press. gauge
(1.5~2.5kgf/cm
2
)
When no foam
is observed
Hi-press. gauge
(13~17kgf/cm
2
)
ON OFF
OFF OFF
Charge at the lo-pressure side (refi ll)
1. Check that the hi-pressure valve of the
manifold pressure gauge is closed.
2. Start the engine.
3. Turn on the A/C unit. Adjust Temperature
control switch to minimum.
4. Adjust engine speed to 1300 – 1500 rpm.
5. Open the Lo-pressure valve of the mani-
fold pressure gauge and the cylinder valve.
Add refrigerant until no foam is observed
through the sight glass.
Remark:
Manifold pressure gauge reading (for refer-
ence):
HIGH pressure:
13~17kgf/cm² (when ambient temperature
is 30°C)
LOW pressure:
1.5~2kgf/cm² (when ambient temperature
is 30°C).
CAUTION
●
Do not operate the compressor when
refrigerant charging is in progress.
Otherwise, refrigerant will counterflow
and cause the cylinder and hoses to ex-
plode.
●
Operating the compressor with no re-
frigerant in the system will cause dam-
age to the compressor.
●
Do not open the lo-pressure valve of the
manifold pressure gauge; otherwise,
the compressor will be damaged.
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