FOREWORD AIR CONDITIONER CIRCUITS
WA320-6 00-11
AIR CONDITIONER CIRCUITS 00
Precautions for Handling Hoses and Tubes 00
Observe these precautions when connecting and disconnecting hoses and tubes in the air conditioner circuit.
Disconnecting Hoses and Tubes 00
★ Ask professional tradesmen to perform the collecting and filling operation of the refrigerant (R134a).
★ Never release the refrigerant (R134a) to the atmosphere.
Connecting Hoses and Tubes 00
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.
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.
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.
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