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 TM5-4120-384-14
5-24 SOLENOID VALVES.
See
for
testing
and
coil
replacement.
a.
Removal.
(See
(1)
Disconnect
power
at
power
source.
(2) (Models F18H-3S and F18H-1S) Remove all three top covers
(Models F18H-3SA and F18H-3SB) Remove top c o v e r ( p a r a
4-11).
If only the coil is bad, it can be replaced without
breaking into the refrigeration system.
(See para
(3) Discharge
and
purge
refrigeration
system
per
and 5-12.
(4)
Disconnect
connector
plug.
(5) Remove top nut that attaches coil to valve
body
and
remove data plate, coil, and connector assembly.
(6)
Cut plastic tie
down
straps
as
necessary
to
remove
valve cable.
(7)
If
connector
plug
is
to
be
reused
unsolder
it
from
leads.
(8) If
grommet
is
to
be
reused
remove
it
from
old
coil
assembly.
(9)
Be
sure
that
refrigerant
has
been
discharged.
(10) Remove two screws that attach tube and plunger assembly
to valve body.
Remove tube and plunger assembly, and then all
other removable internal components from valve body.
(11)
Remove
hardware
that
attaches
valve
body
to
the
housing.
(12) Debraze joints
of
refrigerant
tubing
from
valve
body
and
remove valve body.
Replace.
If
valve
is
suspected
bad
replace
it.
b.
c.
Installation.
(1)
Disassemble
all
removable
components
from
new
valve.
(2) Install flush bushings in valve body. Be sure dry
nitrogen is flowing through system, then position valve body and
braze joints of refrigerant tubing to valve body.
Change 2
5-53
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