Scheppach 5906604903, Перевод оригинального руководства пользователя, Страница: 25 / 124

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9. Starting up
Connecting to the mains power supply
Before you connect the power cable to the mains
power supply, make sure that the data on the rating
plate is the same as that for your mains supply.
Connect the machine to a properly installed protec-
tive contact socket, with at least 16A circuit breaker.
Danger! The mains plug may only be replaced by a
qualified electrician.
Welding preparations
Connect the earth terminal (5) direct to the part to be
welded or to the support on which the part is resting.
Ensure that the earth terminal is in direct contact with
the part to be welded. You should therefore avoid
coated surfaces and/or insulated materials.
The electrode holder cable has a special clamp at
one end, which is used to secure the electrode.
The welding safety shield must be used at all times
for welding. It protects your eyes from the radiation
emitted by the arc and nevertheless enables you to
watch the welding process.
Welding
• Put on appropriate clothing for welding, see „Pro-
tective clothing“ point.
• Switch the device on.
• Select the desired welding current and the wire
feed rate to suit the welding wire diameter, the ma-
terial thickness and the desired penetration depth.
• Hold the welding mask in front of your face and
guide the burner nozzle to the point on the work-
piece that you wish to weld and actuate the burner
switch to create the electric arc.
• Once the arc is lit, the device feeds wire into the
weld pool. If the spot is large enough, guide the
burner slowly along the desired edge. The distance
between the burner nozzle and the workpiece
should be kept as short as possible (never larger
than 10 mm). If necessary, swing the burner nozzle
slightly in order to enlarge the weld pool a little.
• For those with little experience, the initial difficulty
lies in creating a stable electric arc. This means the
correct setting of welding current and wire feed rate.
• The optimum setting of the welding current and
wire feed rate can be determined by trial and error
on a test piece.
• A well adjusted electric arc creates a soft, even
buzzing sound. The penetration depth should be
as deep as possible but the weld pool should not
drop through the workpiece.
• If there is a rough or hard crackling sound, reduce
the wire feed rate or switch to a higher power level
(increase welding current). If the wire feed rate is
too high and/or the welding current is too low, the
welding wire cannot melt properly and repeatedly
dips into the weld pool on the workpiece.
• A quiet, muffled sound with a flickering elec-
tric arc indicates that the wire feed rate
is too low. Increase the wire feed rate or
switch to the lower welding current setting.
If the size stipulated there does not match with the
actual wire thickness, turn the feed roller or replace
it if necessary.
• Now take the wire end off the edge of the reel and
trim it with side cutters or wire shears. Ensure that
the wire does not become loose or unroll.
• Now feed the wire through the wire guide (7c) along
the feed roller and into the hose assembly fitting.
• Tension the pressing roller (7a) again.
• Remove the burner nozzle (1) by simply pulling it
off. Unscrew the contact tip (11) too.
• Route the hose assembly (4) as straight as possible
as it runs away from the welding machine.
• Switch the welding machine on by setting the on/off
switch (13) to the “ON” position.
• Now press the burner button (2) to activate the wire
feed. Press the button until the wire emerges from
the front of the burner. When doing so, pay atten-
tion to the feed roller. If this is slipping, re-tension
the pressing roller (7a) with the adjusting screw
(7b).
• Do not touch the welding wiring during this proce-
dure as there is a risk of injury with this!
• As soon as the wire projects ca. 5 cm from the
front, release the burner button again. Then switch
the machine off again and pull out the mains plug!
• Now, screw the contact tip (11) on again and ensure
that the contact tip matches with the diameter of the
welding wire used.
• Finally, re-attach the burner nozzle (1).
8. Function
On / Off switch
Switch the device on by setting the on/off switch (13)
to “ON”. The switch (13) illuminates. Switch the de-
vice off by setting the on/off switch (13) to “OFF”. The
switch (13) is no longer illuminated.
Welding current
The desired welding current can be selected with the
switch (12). If the switch is set to the top position, the
welding current is 90A and the duty cycle is 10%. If
switched to the bottom position, the welding current is
45A with a duty cycle of 60%.
Wire feed
In order to achieve constant welding, the adjustment
wheel (15) can be used for the fine adjustment of the
wire feed. It is recommended to start with a medium
setting and then reduce or increase the feed rate if
required.
Overload protection
The welding machine is equipped with a thermal pro-
tective device, which interrupts the welding current
supply automatically as soon as a higher temperature
is reached. In this case, the indicator lamp (14) illumi-
nates. If the overload protection device is triggered,
allow to device to cool down for ca. 15 min. Once the
indicator lamp has extinguished, the device is ready
for use again.