Indoor Heat Exchanger - Daikin ATC25QRV16 Service Manual

Indoor Heat Exchanger

8. Indoor Heat Exchanger
Warning
Caution
Step
1 Remove the 2 screws
which fix the indoor unit
to the installation plate.
2 Disconnect the liquid
and gas pipes.
3 Remove the indoor unit
from the installation
plate.
4 Unfasten the hook of
the piping fixture at the
back of the indoor unit
and pull out the piping.
14
Be sure to wait for 10 minutes or more after turning off all power supplies before
disassembling work.
In pump-down work, be sure to stop the compressor before disconnecting the
refrigerant pipe. If the refrigerant pipe is disconnected with the compressor operating
and the stop valve open, air may be sucked in and may generate an over-pressure in
refrigeration cycle, thus resulting in pipe rupture or accidental injury.
When removing or reinstalling the indoor heat exchanger, be sure to wear gloves or
wrap the indoor heat exchanger with cloths. (You may be injured by the fins.)
Be sure to conduct pump down operation before disassembling the refrigerant pipe.
If the refrigerant leaks, repair the spot of leaking, then collect all refrigerant from the
unit. After conducting vacuum drying, recharge proper amount of refrigerant.
From the viewpoint of global environmental protection, make sure to use a vacuum
pump for air purging.
Procedure
Piping fixture
Points
Insertion of a wooden base
may facilitate the removing
work.
Place a plastic sheet around
the drain pan to prevent
wetting the floor with
remaining drain.
If the drain hose is
embedded in the wall,
(R20088)
disconnect beforehand.
Carry out the removal work
with 2 wrenches.
When the pipings are
disconnected, protect the
openings of both the pipe
and the unit from moisture
intrusion.
(R20089)
(R20090)
Removal Procedure
Si041402EC