Parkside PMSG 200 A1 Montage-, Bedienungs- Und Sicherheitshinweise Originalbetriebsanleitung Seite 79

Using the device
Please proceed as follows once
you have electrically connected
the welding device:
Connect the earth cable to
„
workpiece that is to be welded using
the earth terminal. Please ensure
good electrical conductivity.
The area to be welded on the work-
„
piece must be free of rust and paint.
Choose the desired welding current
„
depending on the welding wire
diameter, material thickness and
desired penetration depth.
Guide the torch nozzle
„
the welding mask
face.
Press the torch button
„
to feed the welding wire. Once the
electric arc is burning, the device
feeds welding wire into the weld
pool.
You can work out the ideal settings
„
for the welding current by carrying
out trial welds on a test piece.
A properly set electric arc has a
mild, uniform buzzing sound.
In case of a rough or hard rattle,
„
switch to a higher power level
(increase welding current).
If the welding lens is big enough, the
„
torch is slowly guided along the
8
desired edge. The distance between
the torch nozzle and workpiece
should be as small as possible (it
must not be greater than 10 mm).
If necessary, oscillate a little to
„
increase the size of the weld pool.
For inexperienced welders, it is often
difficult initially to create a decent
electric arc. To do so, the welding
current must be set correctly.
The penetration depth (corresponds
„
to the depth of the welding seam
in the material) should be as deep
as possible without allowing the
welding pool to fall through the
workpiece.
78
GB/MT
the
4
and hold
7
in front of the
22
, in order
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If the welding current too low, the
„
welding wire will not melt properly.
Consequently, the welding wire
repeatedly dips in the welding pool
as far as the workpiece.
The slag can only be removed from
„
the seam once it has cooled down.
To continue welding an interrupted
seam:
First remove the slag at the starting
„
point.
The electric arc is ignited in the weld
„
groove, guided to the connection
point, melted properly and finally the
weld seam is continued.
Setting appropriate parameters
for current and voltage for weld-
ing aluminium with aluminium
wire.
For welding aluminium we recommend
using lower voltages than you would
use for welding iron/steel. To set the
appropriate voltage range, you can
proceed as follows: prepare the device
as described under "Adaptation of
device to solid welding wire with inert
gas". To weld aluminium wire select the
setting "1.0/Al(5356)" by pressing the
welding wire selector key
the voltage reducer selector key
until the LED next to "U" flashes. Now
set a current of approx. 0.5 A. Press the
voltage reducer selector key
LEDs next to the "U" and "A/VRD" are
no longer illuminated. The voltage when
MIG welding can now be adjusted in
a lower voltage range which is more
suited for aluminium welding. If the
rotary switch for adjusting the welding
current is simultaneously pressed and
6
rotated, then the welding current can
be altered in 10 A steps. As guideline
values, to weld 2 mm aluminium sheet
you can set 14.5 Volt and a current of
91 Amps. The optimum welding settings
. Now press
36
,
37
, until the
37