Panasonic U-4LZ2E5 Manual Del Usuario página 5

A halide torch (or any other detector using a naked flame) shall not be used.
Electronic leak detectors may be used to detect refrigerant leaks but, the sensitivity
may not be adequate, or may need re-calibration. (Detection equipment shall be
calibrated in a refrigerant-free area.)
Ensure that the detector is not a potential source of ignition and is suitable for the
refrigerant used.
Leak detection equipment shall be set at a percentage of the lower flammable limit
(LFL) of the refrigerant and shall be calibrated to the refrigerant employed and the
appropriate percentage of gas (25% maximum) is confirmed.
Leak detection fluids are suitable for use with most refrigerants but the use of
detergents containing chlorine shall be avoided as the chlorine may react with the
refrigerant and corrode the copper pipe-work.
If a leak is suspected, all naked flames shall be removed/extinguished.
If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall
be recovered from the system, or isolated (by means of shut off valves) in a part of
the system remote from the leak. Oxygen free nitrogen (OFN) shall then be purged
through the system both before and during the brazing process.
If refrigerant R32 is used and R32 refrigerant leakage detection sensor is connected
to the indoor unit, do not turn off the ELCB of the indoor unit except when there is a
symptom of abnormality or failure, or when performing short-term maintenance. (When
the ELCB is turned off, R32 refrigerant leakage detection sensor cannot detect the
refrigerant leakage when the refrigerant leaks, and it may lead to cause the generation
of toxic gas and fire.)
When Servicing
Contact the sales dealer or service dealer for a repair.
Ventilate the room by opening windows before servicing if there is a possibility of a
refrigerant leakage.
Be sure to turn off the power before servicing.
Turn the power OFF at the main power box (mains), wait at least 5 minutes until it
is discharged, then open the unit to check or repair electrical parts and wiring.
Keep your fingers and clothing away from any moving parts.
Clean up the site after you finish, remembering to check that no metal scraps or bits of
wiring have been left inside the unit.
WARNING
This product must not be modified or disassembled under any circumstances.
Modified or disassembled unit may cause fire, electric shock or injury.
Do not clean inside the indoor and outdoor units by users. Engage authorized
dealer or specialist for cleaning.
In case of malfunction of this appliance, do not repair by yourself. Contact the
sales dealer or service dealer for a repair and disposal.
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