Fronius MTG 250d Manual De Instrucciones página 47

Fitting the inner liners
Checking the
clamping nipple
* Check the clamping nipple before commissioning and whenever the inner liner
is changed. To do so, carry out a visual inspection:
-
-
NOTE!
Incorrect or defective clamping nipple in push applications
Causes gas loss and poor weld properties
▶
▶
NOTE!
Incorrect clamping nipple in push-pull applications
Tangled wire and increased abrasion in the inner liner when using a clamping
nipple with seal ring
▶
Fitting the steel
1
inner liner
Push
with sealing
Left: brass clamping nipple with seal ring. You cannot see through the seal
ring.
Right: silver clamping nipple with see-through bushing
use brass clamping nipples to minimise gas loss
check that the seal ring is intact
use silver clamping nipple to facilitate wirefeeding
Push-Pull
without sealing
2
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