Operation Manual
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A3 MIG Welder© Kemppi Oy 2018 1826
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 ll.
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 owing.
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 xed pre-gas time at the beginning of the weld-
ing, after which the welding power briey rises above the
specied power level. The power and time parameters for
hot start can be specied in the SETUP settings.
Hot start is available for synergic 1-MIG welding.
Crater ll (CrL)
Welding Level
Crater Fill Start Level
Crater Fill Time
Crater Fill End Level
Figure 4.2 Crater ll
The purpose of crater ll is to facilitate controlled nish-
ing of welding and to reduce the welding faults caused
by the nal 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 ll level. To end the
crater ll stage, release the gun trigger. The crater ll pa-
rameters can be specied in the SETUP settings.
Crater ll is available for synergic 1-MIG welding.