TM 9-4120-378-14
REFRIGERATION SYSTEM SERVICING - (BRAZING/DEBRAZING).- Continued
5.6
Location/Item
Action
Remarks
f. Brazing. Braze joints within the air conditioner as
follows:
(1) Position the component to be installed.
(2) To prepare a joint on a valve for brazing, disas-
semble the valve to the extent possible. Then
wrap all but the joint with a wet rag to act as a
heat sink.
(3) Protect insulation, wiring harnesses, and sur-
rounding components with appropriate
shields.
(4) Be sure the work area is well ventilated and
that dry nitrogen is flowing through the refrig-
eration system at a rate of less than 1-2 cfm
(0.028-0.057m 3/minute).
(5) Apply sufficient heat uniformly around the joint
to quickly raise it to a temperature that will melt
the filler alloy. Remove heat as soon as braz-
ing is completed.
5-17
