53
13. Weld the pipes with oxygen welding.
Note: You need to protect the plastic cabinet from the
fire of welding with a protector as shown in the below
pictures.
14. Seal the welding point with bitumen (after they cooled
down) and tie with cable tie.
After welding process mount the fan motor box and
make its connections with U-CONNECTOR as told in
Fan Motor replacement
section.
15. Re-connect all the connections and re-seal the housing
with putty. Tie the cables with cable tie and close the air-
flow cover. (as told in previous sections)
Warning: This process needs gas defla-
tion, gas re-charging and welding pro-
cesses so its need to be done by trained
professionals.
Instructions of gas deflation, gas re-charg-
ing and welding processes will be given at
appendix as a separate presentation.
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