Preparing For Operation; Placing The Machine; Other Connectors; Operation - Metabo WIG 170 AC/DC Manual De Uso

29
30
31
29 Master switch
Switches unit ON or OFF
30 Gas supply connector
31 Power supply cable
LED = Light-Emitting Diode, used as
indicator light.

4. Preparing for Operation

4.1

Placing the machine

A
Caution!
Always stand machine on its
feet only.
The machine draws in air at its front
and bottom, which is given off
through the ventilating slots at the
rear. Ensure an unhindered airflow.
The distance of the machine to walls
or other equipment must be at least
20 cm/8".
4.2

Other connectors

A
Caution!
When connecting the welding
cables observe the required polarity
for the desired welding process and
electrodes to be used.
Stick electrode welding
Prior to initial start-up:
1. Connect welding return cable to -
pole.
2. Connect welding cable to + pole.
Gas-shielded arc welding
Prior to initial start-up:
1. Connect reinforced pressure hose to
pressure regulator.
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2. Connect welding return cable to +
pole.
3. Connect TIG torch welding current
cable to - pole.
4. Connect TIG torch pilot lead.
5. Connect TIG torch gas line.

5. Operation

All machine functions are controlled by
the front panel's switches and controls.
After turning ON all LEDs will illuminate
briefly. The LED display shows:
− for approx. 2 seconds the software
version (flashing), then
− for approx. 1 second the set configu-
ration, and finally
− the currently set welding current.
Condition:
The selftest is completed error-free
(both the equipment-on indicator
light and the S-Test LED are illumi-
nated).
5.1

Operating modes

Select one of the available operating
modes with the operating mode selector:
2T
Operating mode for TIG welding in 2-
step mode:
1. Touch workpiece with the tungsten
electrode.
2. press the Start/Stop button of the
TIG torch.
− The I1 welding current LED illu-
minates.
− The welding process starts with
the fixed starting current.
− After ignition the welding current
slopes up to the set working cur-
rent.
3. Release the Start/Stop button.
− The welding process stops.
− The set gas postflow time is run-
ning.
4T
Operating mode for TIG welding in 4
cycle mode:
1. Touch workpiece with the tungsten
electrode.
2. Press the Start/Stop button of the
TIG torch.
− The I1 welding current LED illu-
minates.
− The welding process starts.
− As long as the Start/Stop button
is held down the arc is burning at
the fixed starting current.
− When releasing the button the
welding current slopes up to the
set working current.
3. If required, press the secondary cur-
rent button of the TIG torch. While
ENGLISH
the secondary current button is held
down:
− the arc burns at the set second-
ary current I2.
− the secondary current LED I2 is
illuminated.
4. Press the Start/Stop button again.
The welding current slopes down
within the preset downslope time to
the minimum current.
− While the button is pressed the
arc continues to burn at the mini-
mum current (end crater filling).
− Releasing the button ends the
welding process.
2T + HF
Operating mode for TIG welding in 2-
step mode, but with HF-ignition. The arc
is started without the tungsten electrode
making contact with the workpiece.
4T + HF
Operating mode for TIG welding in 4-
step mode, but with HF-ignition. The arc
is started without the tungsten electrode
making contact with the workpiece.
ELECTRODE
Operating mode for stick electrode weld-
ing. The I1 welding current LED illumi-
nates.
3
Note:
For stick electrode welding the
machines always uses the following
functions:
Hot-start
− When contacting the weld metal
with the electrode, the set welding
current is increased for a short
period to ensure the arc will start.
The short-term welding
increase is limited to the maximum
electrode current.
Arc-force
− During the welding process the
machine keeps the energy (heat)
brought into the weld metal at a con-
stant level, even if the distance
between electrode and weld pool
varies.
Anti-stick
− If the machine detects a short-circuit
in the welding process, it will switch
after 0.5 seconds to minimum cur-
rent to prevent electrode burn-out.
With the current type selector you deter-
mine the kind of welding current to be
used.
DC
The machine supplies direct current
AC
The machine supplies alternating current
current
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