Indoor Heat Exchanger - Daikin FTK18NMVJU Service Manual

Si041553EB

7. Indoor Heat Exchanger

Warning
Caution
Step
1. Disconnect the refrigerant
piping.
1 Remove the 2 screws.
2 Pull out and disconnect
the drain hose.
3 Wrap the open ends of
the drain hose with
plastic sheets to
prevent water dripping.
4 Disconnect the flare nut
for gas piping.
5 Disconnect the flare nut
for liquid piping.
6 Protect the open ends
of both the pipes and
the unit from moisture
intrusion.
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
Extension drain
Connecting wires
Place a plastic sheet around
the drain pan to prevent
wetting the floor with
remaining drain.
(R21525)
Hold the indoor unit up with a
piece of wood.
If embedded in the wall, the
drain hose can be
disconnected from the back
of the unit.
Drain hose
(R17300)
Carry out the removal work
with 2 wrenches.
(R17301)
Indoor Heat Exchanger
Points
Fixing screw
Drain hose
(R24394)
13