– 5 –
• Tighten the
fl
are nut with a torque wrench in the speci
fi
ed
manner. Excessive tighten of the
fl
are nut may cause a crack in
the
fl
are nut after a long period, which may result in refrigerant
leakage.
• After the installation work, con
fi
rm that refrigerant gas does
not leak. If refrigerant gas leaks into the room and
fl
ows near
a
fi
re source, such as a cooking range, noxious gas may be
generated.
• When the air conditioner has been installed or relocated,
follow the instructions in the Installation Manual and purge
the air completely so that no gases other than the refrigerant
will be mixed in the refrigerating cycle. Failure to purge the air
completely may cause the air conditioner to malfunction.
• Nitrogen gas must be used for the airtight test.
• The charge hose must be connected in such a way that it is not
slack.
Electrical wiring
• Only a quali
fi
ed installer(*1) or quali
fi
ed service person(*1) is
allowed to carry out the electrical work of the air conditioner.
Under no circumstances must this work be done by an
unquali
fi
ed individual since failure to carry out the work
properly may result in electric shocks and/or electrical leaks.
• To connect the electrical wires, repair the electrical parts
or undertake other electrical jobs, wear gloves to provide
protection for electricians and from heat, insulating shoes and
clothing to provide protection from electric shocks.
Failure to wear this protective gear may result in electric
shocks.
• Use wiring that meets the speci
fi
cations in the Installation
Manual and the stipulations in the local regulations and laws.
Use of wiring which does not meet the speci
fi
cations may give
rise to electric shocks, electrical leakage, smoking and/or a
fi
re.
• Connect earth wire. (Grounding work)
Incomplete grounding causes an electric shock.
• Do not connect earth wires to gas pipes, water pipes, and
lightning conductor or telephone earth wires.
• After completing the repair or relocation work, check that the
earth wires are connected properly.
• Install a circuit breaker that meets the speci
fi
cations in the
installation manual and the stipulations in the local regulations
and laws.
• Install the circuit breaker where it can be easily accessed by the
agent.
• When installing the circuit breaker outdoors, install one which is
designed to be used outdoors.
• Under no circumstances the power wire must not be extended.
Connection trouble in the places where the wire is extended
may give rise to smoking and/or a
fi
re.
• Electrical wiring work shall be conducted according to law and
regulation in the community and installation manual.
Failure to do so may result in electrocution or short circuit.
Test run
• Before operating the air conditioner after having completed the
work, check that the electrical control box cover of the indoor
unit and service panel of the outdoor unit are closed, and set
the circuit breaker to the ON position. You may receive an
electric shock if the power is turned on without
fi
rst conducting
these checks.
• If there is any kind of trouble (such as an error display
has appeared, smell of burning, abnormal sounds, the air
conditioner fails to cool or heat or water is leaking) has occurred
in the air conditioner, do not touch the air conditioner yourself
but set the circuit breaker to the OFF position, and contact a
quali
fi
ed service person. Take steps to ensure that the power
will not be turned on (by marking “out of service” near the circuit
breaker, for instance) until quali
fi
ed service person arrives.
Continuing to use the air conditioner in the trouble status may
cause mechanical problems to escalate or result in electric
shocks or other trouble.
• After the work has
fi
nished, use an insulation tester set
(500V Megger) to check the resistance is 1M
Ω
or more between
the charge section and the non-charge metal section
(Earth section). If the resistance value is low, a disaster such
as a leak or electric shock is caused at user’s side.
9-EN
10-EN
