Parameters; Starting Up; Shutting Down; Maintenance - Metabo ELEKTRA BECKUM WIG 170 AC/DC Mode D'emploi

ENGLISH
3
Note:
A successfully completed test
means that no fault was detected in the
safety device.
If the test is not successfully completed it
means that the machine's control has
detected a fault in the safety device.
If that is the case, stop using the
machine and contact your Elektra
service!
5.2

Parameters

The following parameters are adjustable:
Welding current I1
Maximum current for the actual welding
process.
Setting range, in 1 A increments,
− for TIG welding: 3 A...170 A
− for stick
electrode
10 A...140 A.
3
Note:
During the welding process the
current nominal welding current value is
displayed.
If a slopedown time greater than zero is
set, the displayed value changes contin-
uously until the final value is reached.
The welding current can be changed
anytime during the welding process.
3
Note:
If a foot-operated remote control
unit is connected, the machine will
always switch into 2-step mode.
When a hand-operated remote control
unit is connected, the working current
can only changed by this control.
Current setting range
remote control unit: minimum current to
set working current.
Current setting range hand-operated
remote control unit: minimum current to
maximum current.
Secondary current I2
A current that can be switched to in 4-
step mode during the welding process.
To display the currently set value:
1. Select one of the 4-step modes.
2. Press and hold the secondary cur-
rent button of the TIG torch.
− The welding current LED I2 is illu-
minated and the currently set
value of I2 is shown in the dis-
play. The value can now be
changed with the secondary cur-
rent control.
3. Release the secondary current but-
ton.
− The I2 welding current LED extin-
guishes, the value of the welding
current I1 is on display again.
− The value set for I2 is stored.
12
Minimum current
Current level to which the welding cur-
rent slopes down for crater filling at the
end of the welding process.
Slopedown time
Period in which the current slopes down
to minimum current.
Setting range: Min....Max., correspond-
ing to 5 ms...10 sec.
Gas postflow time t.
Duration of shielding gas postflow after
the welding process has ended.
Setting range 5...35 sec.
FREQUENCY
Pulse frequency
With
frequency [Hz] = duration [sec] the dura-
tion of the pulse can be calculated.
welding:
Setting range: 30 Hz...200 Hz.
BALANCE
(WIG AC..mode only)
Ratio of positive to negative voltage time
for AC welding. A value of for instance
30 % means that for 30 % of the dura-
tion (t ) of a period (T) the welding volt-
1
age at the electrode will be positive and
for the remaining 70 % (t
ative.
+U
foot-operated
-U
Increasing this value leads to a better
cleaning effect (aluminium welding), but
at the same time subjects the electrode
to a higher thermal stress.
Setting range:
5.3

Starting up

Gas-shielded arc welding
A
Caution!
Check
work:
− Correct shielding gas connected?
− Correct gas shroud fitted?
− Electrode tip still pointed?
Regrind if necessary.
the formula 1 ÷ set
) it will be neg-
2
t t
1 2
T
25 % ... 75 %.
before starting any
3
Note:
Grind electrodes for DC welding
in lengthwise direction only.
1. Attach welding return cable at a suit-
able location to the workpiece.
2. Open cylinder valve and set desired
gas flow rate.
Change gas shroud, if necessary.
3. Turn main switch ON.
4. Select desired welding process.
5. Set desired welding current.
The welding machine is now opera-
tional.
Stick electrode welding
1. Attach welding return cable at a suit-
able location to the workpiece.
2. Turn main switch ON.
3. Select welding process "Electrode".
4. Set desired welding current.
The welding machine is now opera-
tional.
5.4

Shutting down

1. Close gas cylinder valve.
2. Set master switch to "0".
3. Disconnect welding return cable
from workpiece.
4. Unplug power cable.

6. Maintenance

This welding machine contains no user-
serviceable parts.
t
Depending on dust accumulation the
dust should be blown out from the
machine with dry and oil-free com-
pressed air every 4 - 6 months.
To open the welding machine remove
housing retaining screws and slide
upper housing backwards.
Periodically perform a check for visible
damage.
Contact a qualified electrician if any of
the cables are damaged.

7. Available Accessories

For machines of the WIG 170 AC/DC
series we recommend the following
accessories. These accessories have
been tested with the machine and
ensure unproblematic operation.
A TIG torch Mistral,
1) 4 m torch leads
2) 8 m torch leads
B Dual clock pressure regulator
1) without stop valve
2) with stop valve
C Foot-operated remote control unit
for stepless welding current regula-
tion.