|
| |
TM 9-4120-389-14
5-29. 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.
Preliminary procedure: Remove covers and panels as necessary to have access to repair area.
a. Removal
WARNING
All refrigerant -22 must be discharged from system before any tubing or fitting
removal.
(1)
Discharge the refrigeration system in accordance with para. 5-3.
(2)
Purge the system with nitrogen per para. 5-4.
(3)
Debraze the tube connections per para. 5-5.
(4)
Remove the part.
b. Installation
(1)
Replace the replacement part on the tube ends.
(2)
Purge the system per para. 5-4.
(3)
Braze the tube connections per para. 5-5.
(4)
Replace the dehydrator (See para. 5-10).
(5)
Leak test all newly connected joints and those in the repair area (See para. 5-6).
(6)
Evacuate the refrigerant system (See para. 5-7).
(7)
Charge the system per para. 5-8.
5-82
|
