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 TM5-4120-384-14
5 - 3 1 . DEHYDRATOR (FILTER/DRIER).
The dehydrator (filter-drier) is located in the rear
(compressor/condenser) compartment. Replace the dehydrator
whenever the refrigerant system is opened for any reason.
a.
Removal.
(See
(1)
Disconnect
power
at
power
source.
(2) (Models F18H-3S and F18H-1S) Remove top rear cover (para
(3) Discharge
and
purge
refrigeration
system
per
5-11 and 5-12.
(4)
Remove
four
screws
and
two
mounting
clamps.
(5)
Disconnect
two
flare
nuts
and
remove
dehydrator
from
unit.
I n s p e c t dehydrator for damage and replace if damaged.
b.
Inspect/Replace.
Always replace dehydrator if refrigeration system is opened for any reason.
c.
Installation.
Replacement dehydrators are packaged with sealing
caps on the flare fittings to prevent moisture
contamination of the desiccant filtering media.
Remove these caps immediately prior to installation.
Never install a dehydrator from which caps have been
removed for an extended or unknown period of time.
(1)
Connect
flare
fittings
to
each
end
of
dehydrator.
(2)
Install
mounting
clamps
and
secure
with
four
screws.
(3) Leak
test
newly
connected
joints
and
all connections
in
the
area.
top rear cover (para
(4) (Models F18H-3S and F18H-1S)
Install
top cover (para
4-11). (Models F18H-3SA and F18H-3SB)
Install
4-11).
(5) Evacuate and charge the refrigeration
system
in
accordance with paragraphs 5-15 and 5-16.
Change 2
5-69
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