Assembly /
Wiring
After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as before.
Perform the work so that the cabinet or panel does not catch the inner wires.
If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is caused
at user’s side.
Insulator
check
Ventilation
After the work has finished, be sure to use an insulation tester set (500VM
:
) to check the resistance is
1
M
:
or more between the charge section and the non-charge metal section (Earth position).
If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.
When the refrigerant gas leaks during work, execute ventilation.
If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the refrigerant
and the closed room full with gas is dangerous because a shortage of oxygen occurs. Be sure to
execute ventilation.
If refrigerant gas has leaked during the installation work, ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, noxious gas may generate.
After installation work, check the refrigerant gas does not leak. If the refrigerant gas leaks in the room,
poisonous gas generates when gas touches to fire such as fan heater, stove or cooking stove though
the refrigerant gas itself is innocuous.
Compulsion
When the refrigerant gas leaks, find out the leaked position and repair it surely.
If the leaked position cannot be found out and the repair work is interrupted, reclaim and tighten the service
valve, otherwise the refrigerant gas may leak into the room.
The poisonous gas generates when gas touches to fire such as fan heater, stove or cooking stove though
the refrigerant gas itself is innocuous.
When installing equipment which includes a large amount of charged refrigerant in a sub-room, it is
necessary that the concentration does not the limit even if the refrigerant leaks.
If the refrigerant leaks and exceeds the limit concentration, an accident of shortage of oxygen is caused.
Tighten the flare nut with a torque wrench in the specified manner.
Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may
result in refrigerant leakage.
Nitrogen gas must be used for the airtight test.
The charge hose must be connected in such a way that it is not slack.
For the installation / moving / reinstallation work, follow to the Installation Manual.
If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric shock or fire is caused.
Check after
repair
Once the repair work has been completed, check for refrigerant leaks, and check the insulation
resistance and water drainage.
Then perform a trial run to check that the air conditioner is running properly.
After repair work has finished, check there is no trouble. If check is not executed, a fire, electric shock
or injury may be caused. For a check, turn off the power breaker.
After repair work (installation of front panel and cabinet) has finished, execute a test run to check there
is no generation of smoke or abnormal sound.
If check is not executed, a fire or an electric shock is caused. Before test run, install the front panel and cabinet.
Be sure to fix the screws back which have been removed for installation or other purposes.
Do not
operate the
unit with the
valve closed.
Check the following matters before a test run after repairing piping.
• Connect the pipes surely and there is no leak of refrigerant.
• The valve is opened.
Running the compressor under condition that the valve closes causes an abnormal high pressure
resulted in damage of the parts of the compressor and etc. and moreover if there is leak of refrigerant
at connecting section of pipes, the air is sucked and causes further abnormal high pressure resulted in
burst or injury.
Only a qualified installer (*1) or qualified service person (*1) is allowed to relocate the air conditioner. It
is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric
shocks, injury, water leakage, noise and / or vibration may result.
Check the following items after reinstallation.
1) The earth wire is correctly connected.
2) The power cord is not caught in the product.
3) There is no inclination or unsteadiness and the installation is stable.
If check is not executed, a fire, an electric shock or an injury is caused.
When carrying out the reclaim work shut down the compressor before disconnecting the refrigerant pipe.
Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating
will cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally
high level, and possibly resulting in rupture, injury, etc.
Check after
reinstallation
(*1) Refer to the “Definition of Qualified Installer or Qualified Service Person”
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