SEN00094-05
00 Index and foreword
6
PC200, 220-8
8.
Precautions for disconnecting and con-
necting hoses and tubes in air conditioner
circuit
1)
Disconnection
k
For the environment, the air condi-
tioner of this machine uses the
refrigerant (air conditioner gas:
R134a) which has fewer factors of
the depletion of the ozone layer.
However, it does not mean that you
may discharge the refrigerant into
the atmosphere as it is. Be sure to
recover the refrigerant when dis-
connecting the refrigerant gas cir-
cuit and then reuse it.
a
Ask professional traders for collecting
and filling operation of refrigerant
(R134a).
a
Never release the refrigerant (R134a)
to the atmosphere.
k
If the refrigerant gas gets in your
eyes or contacts your skin, you
may lose your sight and your skin
may be frozen. Accordingly, put
on safety glasses, safety gloves
and safety clothes when recover-
ing or adding the refrigerant.
Refrigerant gas must be recovered
and added by a qualified person.
2)
Connection
1]
When installing the air conditioner cir-
cuit hoses and tubes, take care that
dirt, dust, water, etc. will not enter
them.
2]
When connecting the air conditioner
hoses and tubes, check that O-rings
(1) are fitted to their joints.
3]
Check that each O-ring is not dam-
aged or deteriorated.
4]
When connecting the refrigerant pip-
ing, apply compressor oil for refriger-
ant (R134a)
(DENSO: ND-OIL8,
VA L E O T H E R M A L S Y S T E M S :
ZXL100PG (equivalent to PAG46))
to its O-rings.
a
Example of O-ring (Fitted to every joint of
hoses and tubes)
a
For tightening torque, see the precautions for
installation in each section of "Disassembly
and assembly".
