3
Heating Cable Repair
nVent.com
|
29
Hot/cold joint:
Ensure that the braze has formed
a
cone
from the large to small diameter conductor
(see Figure 29). If not, the braze is still cold and you must
apply more heat.
Note: If insufficient heat is applied to the
conductors, the brazed junction may be surrounded
by the ball of braze but not actually bonded and an
open circuit failure will occur.
Figure 29: Completed hot/cold junction
Hot/hot and Hot/cold joint:
Remove all trace of flux
from the conductors with the emery cloth (Figure 30).
Straighten the conductors with needle nose pliers such
that the conductors will be as far from the inside wall of
the joint body as possible. This must be done delicately.
Avoid bending the conductors with the emery cloth.
Emery
cloth
Figure 30: Gently remove flux with emery cloth