Operation; Setting The Welding Current - EINHELL BT-GW 170 Mode D'emploi D'origine

Anleitung_BT_GW_170_SPK1:_
GB
Description of the wire guide unit (Fig. 26-27)
A Spool lock
B Spool holder
C Cam pin
D Adjusting screw for roller brake
E Screws for feed roller holder
F Fee roller holder
G Feed roller
H Hose package mounting
I Pressure roller
J Pressure roller holder
K Pressure roller spring
L Adjusting screw for counter-pressure
M Guide tube
N Wire spool
O Cam opening in wire spool
Inserting the wire spool (Fig. 26, 27)
Place the wire spool (N) on the spool holder (B).
Ensure that the end of the welding wire is unwound
on the side of the wire guide, see arrow.
Ensure that the spool lock (A) is pushed in and the
cam pin (C) is engaged in the cam opening in the
wire spool (O). The spool lock (A) must engage
again over the wire spool (N). (Fig. 27)
Inserting the welding wire and adjusting the wire
guide (Fig. 28-34)
Push the pressure roller spring (K) upwards and
swing it forwards (Fig. 28).
Pull the pressure roller holder (J) with the
pressure roller (I) and pressure roller spring (K)
downwards (Fig. 29).
Undo the screws for the feed roller holder (E)
and pull off the feed roller holder (F) upwards
(Fig. 30).
Check the feed roller (G). The appropriate wire
thickness must be specified on the top of the
feed roller (G). The feed roller (G) is fitted with
two guide grooves. Turn the feed roller (G) over
if necessary or replace it. (Fig. 31)
Position the feed roller holder (F) again and
secure it.
Remove the gas nozzle (Fig. 5/12) from the
burner (Fig. 5/13) by turning it clockwise,
unscrew the contact tube (Fig. 6/26). (Fig. 5 – 6).
Place the hose package (Fig. 1/11) on the floor
as straight as possible pointing away from the
welding set.
Cut off the first 10 cm of the welding wire to
produce a straight cut with no shoulders, warping
or dirt. Deburr the end of the welding wire.
18
21.12.2010 9:53 Uhr Seite 18
Push the welding wire through the guide tube (M)
between the pressure and feed rollers (G/I) into
the hose package mounting (H). (Fig. 32)
Carefully push the welding wire by hand into the
hose package until it projects out of the hose
package by approx. 1 cm at the burner (Fig.
5/13).
Undo the adjusting screw for counter-pressure
(L) a few turns. (Fig. 34)
Push the pressure roller holder (J) with pressure
roller (I) and pressure roller spring (K) upwards
again and attach the pressure roller spring (K) to
the adjusting screw for counter-pressure (L)
again (Fig. 33).
Now set the adjusting screw for counter-pressure
(L) so that the welding wire is positioned firmly
between the pressure roller (I) and feed roller (G)
without being crushed. (Fig. 34)
Screw the appropriate contact tube (Fig. 6/26) for
the welding wire diameter on to the burner (Fig.
5/13) and fit the gas nozzle, turning it clockwise
(Fig. 5/12).
Set the adjusting screw for the roller brake (D) so
that the wire can still be moved and the roller
stops automatically after the wire guide has been
braked.

6. Operation

6.1 Setting
Since the welding set must be set to suit the specific
application, we recommend that the settings be
made on the basis of a test weld.

6.1.1 Setting the welding current

The welding current can be set to 6 different levels
using the ON/OFF/Welding current switch (Fig. 1/7).
The required welding current depends on the
material thickness, the required penetration depth
and the welding wire diameter.
6.1.2 Setting the wire feed speed
The wire feed speed is automatically adjusted to the
current setting. The final wire feed speed setting can
be made on the welding wire speed controller (Fig.
1/14). We recommend that you start the setting work
at level 5 which is the middle value, and then adjust it
from there. The required quantity of wire depends on
the material thickness, the penetration depth, the
welding wire diameter and also of the size of the gap
to be bridged between the workpieces you wish to
weld.