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FOREWORD
AIR CONDITIONER CIRCUITS
Precautions for Handling Hoses and Tubes
Observe these precautions when connecting and disconnecting hoses and tubes in the air conditioner circuit.
WARNING! The air conditioner of this machine uses a refrigerant (air conditioner gas:
R134a) which has fewer factors to cause the depletion of the ozone layer.
However, it does not mean that you may discharge the refrigerant into the
atmosphere. Be sure to recover the refrigerant when disconnecting the
refrigerant gas circuit and then reuse it.
Disconnecting Hoses and Tubes
★ Ask professional tradesmen to perform the collecting and filling operation of the refrigerant (R134a).
★ Never release the refrigerant (R134a) to the atmosphere.
WARNING! If the refrigerant gas gets in your eyes, you may lose your sight. If the
refrigerant gas contacts your skin, your skin may be frozen. Wear safety
glasses, safety gloves, and safety clothes when recovering or adding the
refrigerant. Refrigerant gas must be recovered and added by a qualified
person.
Connecting Hoses and Tubes
1.
When installing the air conditioner circuit hoses and tubes, be
careful that dirt, dust, water, etc. does not get into 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 damaged or deteriorated.
4.
When connecting the refrigerant piping, apply compressor oil for
refrigerant (R134a) (DENSO: ND-OIL8, VALEO THERMAL
SYSTEMS: ZXL100PG (equivalent to PAG46)) to its O-rings.
★ See example of O-ring in the graphic. O-rings are fitted to
every joint of the hoses and tubes.
★ For the tightening torque, see the precautions for installation in the appropriate Disassembly and Assembly sections.
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AIR CONDITIONER CIRCUITS
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WA500-6
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