Establishing a
ground (earth)
connection
1
Plug the grounding (earthing) cable
into the (-) current socket and twist to
fasten it
2
Use the other end of the grounding
(earthing) cable to establish a connec-
tion to the workpiece
Connecting the
welding torch
Welding torch and torch control connections on the
VR 4000
1
Check that the torch is correctly and
completely tooled up. Insert it - infeed
tube first - into the torch connection on
the wire-feed unit
2
Tighten the union nut by hand to fix
the torch in place
3
Plug the control plug of the welding
torch into the torch control connection
and latch it in place
NOTE!
When altering the length and/or cross-
section of the welding torch hosepack,
measure the welding circuit resistance
r and the welding circuit inductivity L
(see "Further settings").
Other tasks Carry out the following steps in accordance with the wire-feed unit operating instructions:
1
Insert the feed rollers in the wire-feed unit
2
Insert the wirespool or basket-type spool with adapter in the wire-feed unit
3
Feed in the wire electrode
4
Set the contact pressure
5
Adjust the brake
92
Toowoomba Welding Supplies : tweld.com.au : Ph +61 7 4659 0044
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