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 TM5-4120-384-14
4-36.
COIL
(CLEANING).-Continued
c. Cleaning.
Clean coil with a soft bristled brush, vacuum
cleaner
brush
attachment,
or
use
compressed
air
at
30
psi
(2.1
2
k g / c m ) or less from the inside of the coil to blow the dirt out.
When using compressed air wear
Take care to avoid fin damage.
Dirt can be blown into your eyes.
safety glasses or goggles.
Should a leak or major damage be evident refer to direct support
maintenance.
Assemble.
d.
TOP mark must be up and air
(1) Install the mist eliminator.
flow
arrows should point away from coil.
(2)
Install
supply
air
louver
(3) (Models F18H-3S and F18H-1S) Install top front cover
(para 4-11). (Models F18H-3SA and F18H-3SB) Install top cover (para
(4)
Connect
power
at
power
source.
SOLENOID VALVE (COIL REMOVAL).
4-37.
valves are located in
the
rear
The L1 and L2 Solenoid
(See fig. 4-33.)
compressor compartment.
Disconnect input power from the air conditioner
before performing maintenance on any part of the
electrical system.
The voltages used can be lethal.
The following basic
instructions apply to both the
by-pass solenoid L1
and the pressure equalizer
solenoid L2.
Test.
a.
(1)
Disconnect
power
at
power
source.
(2) (Models F18H-3S and F18H-1S) Remove fabric cover and top
(Models F18H-3SA and F18H-3SB) Remove
rear cover
fabric cover and top cover (para 4-11).
(3) Disconnect the solenoid
valve
connector
plug.
P8
for
L1
solenoid and P9 for L2 solenoid.
4-108
Change 2
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