16 | P a g e
PATON
®
PSI PRO 315 A 400 V DC MIG/MAG TIG/MMA
ATTENTION!
Do not sharpen the electrode tip to a needle-like shape, as
such a shape can cause deviation of a welding arc from side to side. The
properly sharpened electrode tip should have a slightly blunted end with a
diameter corresponding to the specified welding current. In welding with a
large welding current, the high-sharpened electrode easily melts due to
insufficient heat dissipation. The sharpening marks should be arranged along
the electrode centerline.
ATTENTION!
Use a gated welding torch with a
Ф
13mm
bayonet connector.
Select the maximum current of the welding torch according to the
specifications.
4.2. OPERATIONAL CYCLE OF THE WELDING PROCESS TIG – LIFT
The procedure for changing the values of the operational parameters of the welding unit is described in
Section 6.1.
4.2.1. TIG-LIFT CONTACT ARC-STARTING FUNCTION
This function of the control button on the welding torch is set by default and is designed for welding
torches with contact arc starting, without using oscillators and other like devices. In contrast to
conventional methods of arc starting, the contact arc starting prevents the formation of current surge at
the instant of the arc starting. As a result, disintegration of the no consumable tungsten electrode and
ingress of the electrode particles into the weld can be prevented.
ATTENTION
! Requires cleaning of the welded material at the site of the arc.
When this function has been activated, contact the electrode with the workpiece. It is allowed to hold
the electrode in this position for an unlimited length of time. When the operator is ready to welding
(for example, when the operator has lowered the protective shield and purged the weld area with gas),
it is necessary to lift the electrode tip slowly from the workpiece. The welding unit will sense this
action as a signal to start welding, and the welding current will be linearly increased to the set value.
To prevent surface melting of the electrode tip, the rate of lifting the electrode should correspond to the
set welding current value. The period
[TIME UP ARC]
of linear current rise is discussed
in
Section 4.5
.
t (s)
I (A)