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4. Brazing steps:
a. Wrap a wet rag around the valve body to
avoid heat damage and continue the dry
nitrogen purge.
b. Braze the refrigerant lines to the service
valves (Fig. 16 and Fig. 17).
IMPORTANT
!
WHEN BRAZING LINE SET TO SERVICE
VALVES POINT FLAME AWAY FROM
SERVICE VALVE.
CAUTION
!
AVOID BREATHING VAPORS OR FUMES FROM
BRAZING OPERATIONS.
PERFORM OPERATIONS ONLY IN WELL−
VENTILATED AREAS.
WEAR GLOVES AND PROTECTIVE GOGGLES
OR FACE SHIELD TO PROTECT AGAINST
BURNS.
WASH HANDS WITH SOAP AND WATER AFTER
HANDLING BRAZING ALLOYS AND FLUX.
5. Continue to purge until whole brazing process is
complete (Fig. 17).
IMPORTANT
!
ONCE THE BRAZING IS COMPLETE,
REMOVE THE WET RAG BEFORE
STOPPING THE DRY NITROGEN PURGE.
6. Reinstall the valve cores to service ports
(Fig. 18).
16
!
Wet Rag
!
17
Dry Nitrogen
IN
!
18
Dry Nitrogen
IN
1
Braze 1
Wet Rag
Nitrogen
OUT
2
Braze 2
W415-2973 / B / 07.18.22
11
IOM
Nitrogen
OUT
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