Si041144
Removal of Indoor Heat Exchanger
Removal Procedure
27
6. Removal of Indoor Heat Exchanger
Procedure
Warning
Be sure to wait for 10 minutes or more after turning off all power
supplies before disassembling work.
Step
Procedure
Points
1. Disconnect the refrigerant
piping.
Preparation
Remove the electrical box
according to the “Removal of
Electrical Box”.
Caution
If the refrigerant leaks, repair
the leakage, then collect all
refrigerant from the unit. After
conducting vacuum drying,
recharge a proper amount of
refrigerant.
Caution
From the viewpoint of global
environment protection, be
sure to use a vacuum pump
for air purging.
Caution
In pump-down work, be sure
to stop the compressor
before disconnecting the
refrigerant piping. If the
refrigerant piping is
disconnected with the
compressor operating and
the stop valve open, air may
be sucked in to generate an
over-pressure in refrigeration
cycle, thus resulting in pipe
rupture or accidental injury.
Place a plastic sheet under
the drain pan to prevent from
wetting the floor with the
remaining drain water.
If the drain hose is
embedded in the wall,
disconnect the drain hose
beforehand.
Carry out the removal work
with 2 wrenches.
When the pipings are
disconnected, protect both
the openings of pipe and unit
from entering moisture.
1
Hold the indoor unit up
with a piece of wood
etc.
2
Pull out the drain hose.
3
Unscrew the flare nuts
for gas piping and liquid
piping.
(R16521)
(R16522)
Drain hose
(R16523)
Liquid piping
Gas piping
