Precautions for disconnecting air conditioner piping
NOTICE
When replacing the air conditioner unit, air conditioner compressor, condenser or receiver drier, etc.,
collect the refrigerant (air conditioner gas: R134a) from the air conditioner circuit before disconnecting
the air conditioner hoses.
REMARK
• Ask a qualified person for collecting, adding and filling operations of the refrigerant (air conditioner gas:
R134a).
• Never release the refrigerant (air conditioner gas: R134a) to the atmosphere.
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Put on the protective eyeglasses, gloves and working clothes with long sleeves while you are col-
lecting or filling the refrigerant. Otherwise, when refrigerant gas (R134a) gets in your eyes, you may
lose your sight, and when it touches your skin, you may suffer from frostbite.
• When loosening the nuts fixing air conditioner hoses and tubes, be sure to use 2 wrenches; use one
wrench to fix and use the other one to loosen the nut.
Precautions for air conditioner piping
• When installing the air conditioner piping, be careful so that dirt, dusts and water do not enter the hose.
• Check that the O-rings are fitted to the joints when connecting the air conditioner piping.
• Do not reuse an O-ring because it is deformed and deteriorated if it is used once.
• When removing the O-rings, use a soft tool so that the piping is not damaged.
• Check that the O-ring is not damaged or deteriorated.
• Apply compressor oil for refrigerant (R134a) to O-ring.
REMARK
Do not apply oil to the threaded portion of a bolt, nut or union.
Manufacturer
Part name
DENSO
ND-OIL8
VALEO THERMAL SYSTEMS
ZXL100PG (PAG46 or equivalent)
SANDEN
SP-10
When tightening nuts of the air conditioner hoses and tubes, be sure to use 2 wrenches. Use one wrench to fix
and tighten the nut with the other wrench to the specified torque (Use a torque wrench for tightening).
SAFETY NOTICE FOR OPERATION
00 INDEX AND FOREWORD
00-32
PC290LL-11
