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TM 9-4120-389-14
c.
Removal
WARNING
All refrigerant -22 must be discharged from system before attempting removal of
low pressure service valve.
(1)
Discharge the refrigeration system per para. 5-3.
(2)
Purge the system with nitrogen (See para. 5-4).
(3)
Debraze the valve (See para. 5-5).
(4)
Remove valve from tube connection.
d.
Installation
(1)
Remove valve stem from replacement valve.
(2)
Place replacement valve on tube connection.
(3)
Braze valve to tube connection. (See para. 5-5).
(4)
Install stem in valve body.
(5)
Install cap on valve.
(6)
Replace dehydrator (See para. 5-10).
(7)
Leak test newly connected joint and the repair area (See para. 5-6).
(8)
Evacuate the system (See para. 5-7).
(9)
Charge the system (See para. 5-8).
Follow-on procedure: Install top cover (See para. 4-14).
5-62
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