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HotStart
function (F25)
To obtain the best possible welding result, the HotStart function will sometimes need to
be adjusted.
Advantages
- Improved ignition properties, even when using electrodes with poor ignition properties
- Better fusion of the parent material during the start-up phase, meaning fewer coldshut
defects
- Slag inclusions largely avoided
Function
F25 Hot-current time,
0 - 2 s,
Factory setting 0.5 s
F26 HotStart current,
100 - 200%,
Factory setting 150%
Function
During the specified hot-start time (F25),
the welding current is increased to a certain
value. This value (F26) is higher than
the selected welding current.
The Hot Start feature ensures that sufficient heating occurs on the base metal, which is still cold, while
starting the welding process. In this way, the electrode is easily ignited and it is prevented from sticking
to the workpiece
Anti-Stick
function (F28)
As the arc becomes shorter, the welding voltage may also fall so that the rod electrode is
more likely to stick to the workpiece. This may also cause the rod electrode to burn out.
Electrode burn-out is prevented by activating the anti-stick function. If the rod electrode
begins to stick, the power source immediately switches the welding current off. The welding
process can be resumed without problems once the rod electrode has been
detached from the workpiece.
The anti-stick (Ast) function can be activated and deactivated in the Setup menu for the
setup parameters for MMA welding.
Thanks to its anti-stick feature, the annealing of the electrode and the burning of alloy components are
prevented blocking damage to the electrode in case of unwanted material contact. In contact with the
electrode and the workpiece, the welding current is turned off for a short time.
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