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 TM5-4120-384-14
5-20. EVAPORATOR COIL. -Continued
a.
Removal.
Disconnect input power from the air conditioner
before performing maintenance on any part of the
electrical system.
The voltages used can be lethal.
(1)
Disconnect
power
at
power
source.
(2) (Models F18H-3S and F18H-lS) Remove top front cover
(Models F18H-3SA and F18H-3SB) Remove top cover (para
(3)
Remove
supply
air
louver
(4)
Remove
mist
eliminator
by
lifting
out
of
unit.
(5) Discharge
and
purge
the
refrigerant
system
per
and 5-12.
(6)
Unwrap
insulation
on
joints
to
be
debrazed.
(7) Debraze tube connections at tee and expansion valve
(para
Take care that expansion valve is not damaged during
5-13).
debrazing operations.
(8) Remove top two pan head screws, lock washers, and flat
Remove four each screws, lock
washers that attach coil to housing.
washers, and flat washers that attach the mist eliminator holder
and coil to the housing.
When handling coils wear gloves
to
avoid
cuts
and
reduce fin damage on the coil.
(9) Slip
coil
and
mist
eliminator
holder
up
and
out
of unit.
Replace.
If
coil
is
defective
replace
it.
b.
c.
Installation.
When handling coils wear gloves
to
avoid
cuts
and
reduce fin damage on the coil.
(1)
Carefully
position
coil
and
mist
eliminator
holder.
Change 2
5-44
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