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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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