JESS WELDING ProTIG 350AC/DC, Operating Manual

Page: 42 / 52

ProTIG 350 AC/DC
Operating manual Page 38
Electrode welding:

Connect electrode holder
Connect electrode holder as shown in the picture to the positive terminal.
Here, however, always follow the manufacturer's specification of the electrodes.

Connection of work piece cable
When clamping the work piece into its holder, choose appropriate spot without paint or rust for good
conductivity.

Start welding
Switch the machine to the electrode mode, adjust welding current for the welding task and start welding by
connecting the electrode to the work piece.

Hotstart:
With the parameter ‘Hot start’ it is possible to set the current, with which the electrodes ignites.
This value can be adjusted from 0% (no increased ignition) to 150% of the actual welding current I1.
Arcforce:
With the ‚Arc Force‘ parameter a sticking of the electrode during welding can be prevented.
For this purpose, the welding current is temporarily increased.
This value can be adjusted from 100% (no increased current) to 255% of the actual welding current I1.
Overview over the welding electrodes:
Electrode Ø mm Current (A) Material thickness (mm)
1,6 30 – 60 < 1,5
2,0 40 – 75 1,5 – 3,0
2,5 60 – 110 3,0 – 5,0
3,2 95 – 140 5,0 – 12,0
4,0 140 – 190 > 12,0
A fairly approximate indication of the average current to use in the welding of electrodes for ordinary steel is
given by the following formula:
I = 50 x (Øe - 1 )
where: I = intensity of the welding current
Øe = electrode diameter
Example: for electrode diameter 4 mm
I = 50 x (4 -1 ) = 50 x 3 = 150A
NOTE: It's always the details of the electrode manufacturer must be observed!
Massebuchse
Workpiece socket
+ Buchse Elektrode / WIG
+ socket MMA / TIG
Vorne / front