SANY LATIN AMERICA
4-153
SY195/205/215/225C9 Crawler Hydraulic Excavator
Structure and Function
Shop Manual - June 2013
●
Insuf
fi
cient refrigeration
Symptom: Insuf
fi
cient refrigeration
Symptom
Cause
Analysis
Remedy
●
Pressure at both Hi- and
Ho-pressure ends very
low
●
Foam is continuously ob-
served via the sight glass
●
Insuf
fi
cient refrigeration.
●
Air leaks
somewhere
in the refrig-
erating sys-
tem
●
Insuf
fi
cient
refrigerant in the
system
●
Leak of refriger-
ant
●
Check for air leakage with a leak
detector. Make necessary re-
pairs.
●
Add proper amount of refriger-
ant.
●
When connected with the gauge,
if the reading is near zero, set
the system under vacuum state
after inspection and repair.
ZX215-1002169
0
0
01
02
03
04
05
05
0
0
35
MPa
MPa
{cmHg kgf/cm
2
}
{cmHg kgf/cm
2
}
5
3
30
25
25
20
10
1
15
2
15
35
-01
-01
-76
-76
-50
06
07
08
085
8.5
8
7
5
6
4
3
2
1
15
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