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 TM5-4120-384-14
5-33. COMPRESSOR.-Continued
(4)
Braze
tube
connections
in
accordance
with
(Not necessary
if
replaced
after
(5) Replace dehydrator.
refrigerant system cleaning and purging.)
(6)
Connect
P10
connector.
(7) Leak
test
newly
connected
joints
and
all
connections
in
the
area.
(8) (Models F18H-3S and F18H-1S)
Install
top
rear cover (para
4-11). (Models F18H-3SA and F18H-3SB)
Install
top
cover (para
(9) Evacuate and charge the refrigeration
system
in
accordance with paragraphs 5-15 and 5-16.
5-34. TUBING AND FITTINGS.
The refrigeration system contains a number of pieces of copper
tubing in a variety of material grades, sizes, lengths, and shapes,
and a number of elbows, tees and adapters in several sizes.
Observe the following when replacing any piece of tubing or fitting
in the system:
Be sure the refrigeration system is fully discharged
and purged, and that dry nitrogen is flowing through
the system at a rate of 1-2 cfm (0.028 - 0.057
m 3 /minute)
Death or
before
brazing
or
debrazing.
injury could occur from exposure to refrigerant gases
under pressure.
Test/Replace.
a.
Replace tubing and fittings only with
equal
material,
grade,
size,
length, and shape as the item removed.
Leak test the entire refrigeration system in accordance with
b.
paragraph 5-14 after any replacement action that required brazing.
c.
Replace the dehydrator and leak test the dehydrator flare
fittings as the final step in any maintenance action that required
the refrigeration pressure system to be opened.
d.
Evacuate
and charge the refrigeration system in accordance
with paragraphs
5-15 and 5-16 after all other maintenance actions
are completed.
5-84
Change 2
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