Standard Mig Features - Kemppi A3 MIG Operating Manual

4.3 Standard MIG features

The standard A3 MIG Welder delivery includes three MIG
features that facilitate welding and improve weld quality.
These features are creep start, hot start and crater fill.
To use a MIG feature, press the feature selector button 8.
Press the selector button repeatedly to use one or sev-
eral features. Only the features allowed for the welding
method you have chosen will be available.
Creep start (CrE)
The purpose of the creep start feature is to make con-
trolled weld start easier and smoothen the initial stage of
welding, for example when welding with high wire feed
speeds. At the beginning, the machine will use a slow
wire feed speed until the wire touches the work piece and
the current starts flowing.
Creep start is available for both the regular MIG welding
and the synergic 1-MIG welding.
Hot start (Hot)
The purpose of hot start is to reduce start faults, for ex-
ample when welding aluminium or other materials with
particularly good thermal conductivity. In this scenario,
there is a fixed pre-gas time at the beginning of the weld-
ing, after which the welding power briefly rises above the
specified power level. The power and time parameters for
hot start can be specified in the SETUP settings.
Hot start is available for synergic 1-MIG welding.
Crater fill (CrL)
Welding Level
Figure 4.2 Crater fill
The purpose of crater fill is to facilitate controlled finish-
ing of welding and to reduce the welding faults caused
by the final crater. When you press the welding gun trig-
ger completely down at the end of welding, the welding
power is reduced to a pre-set crater fill level. To end the
crater fill stage, release the gun trigger. The crater fill pa-
rameters can be specified in the SETUP settings.
Crater fill is available for synergic 1-MIG welding.
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Crater Fill Start Level
Crater Fill End Level
Crater Fill Time
A3 MIG Welder 1826