Indoor Heat Exchanger - Daikin CTKM28PV2S Service Manual

Si041351ED

7. Indoor Heat Exchanger

Warning
Caution
Step
1 Pull out the drain hose.
2 Unscrew the flare nuts
for gas piping and liquid
piping.
3 Detach the indoor unit
from the installation
plate.
4 Push the bottom frame.
5 Release the piping
fixture and remove it.
Removal Procedure
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
Liquid piping
Gas piping
Drain hose
(R18889)
Bottom frame
(R9572)
Piping fixture
(R18723)
Indoor Heat Exchanger
Points
Hold the indoor unit up with a
piece of wood.
Place a plastic sheet under
the drain pan to prevent from
wetting the floor with
remaining drain.
If the drain hose is
embedded in the wall,
disconnect the drain hose
beforehand.
Carry out the removal works
with 2 wrenches.
When the pipings are
disconnected, protect both
the openings of pipe and unit
from entering of moisture.
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