7
…In laundry rooms
Do not install in laundry rooms. Indoor unit is not drip proof.
When Connecting Refrigerant Tubing
Pay particular attention to refrigerant leakages.
WARNING
When performing piping work, do not mix air except for specified refrigerant in refrigeration cycle. It causes
capacity down, and risk of explosion and injury due to high tension inside the refrigerant cycle.
If the refrigerant comes in contact with a flame, it produces a toxic gas.
Do not add or replace refrigerant other than specified type. It may cause product damage, burst and injury,
etc.
Ventilate the room immediately in the event of a refrigerant gas leakage during installation. Be careful not to allow
contact of the refrigerant gas with a flame as this will cause the generation of toxic gas.
Keep all tubing runs as short as possible.
Use the flare method for connecting tubing.
Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then
tighten the nut with a torque wrench for a leak-free connection.
Check carefully for leaks before starting the test run.
Do not leak refrigerant while piping work for an installation or re-installation, and while repairing refrigeration parts.
Handle liquid refrigerant carefully as it may cause frostbite.
Under no circumstances shall potential sources of ignition be used in the searching or detection of refrigerant
leaks.
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.
When Servicing
Contact the sales dealer or service dealer for a repair.
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.
CAUTION
Ventilate any enclosed areas when installing or testing the refrigeration system.
Leaked refrigerant gas, on contact with fire or heat, can produce dangerously toxic gas.
Confirm after installation that no refrigerant gas is leaking. If the gas comes in contact with a burning stove,
gas water heater, electric room heater or other heat source, it can cause the generation of toxic gas.
