Telwin TIG - Welding Procedures; TIG Welding with Direct Current; Welding Parameters; Coated Electrode Welding

ø Electrode (mm) Welding current (A)
TROUBLESHOOTING
Min. Max.
IN CASE OF UNSATISFACTORY FUNCTIONING,
1.6 25 - 50
BEFORE SERVICING MACHINE OR REQUESTING
2 40 - 80
ASSISTANCE, CARRY OUT THE FOLLOWING CHECK:
2.5 60 - 110
- Check that the welding current, which is regulated by the
3.2 80 - 160
potentiometer with a graduated amp scale, is correct for
4 120 - 200
the diamter and electrode type in use.
5 150 - 220
- Check that when general switch is ON the relative lamp
is ON. If this is not the case then the problem is located
- The user must consider that, according to the electrode
on the mains (cables, plugs, outlets, fuses, etc.)
diameter, higher current values must be used for flat
- Check that the yellow led (ie. thermal protection
welding, whereas for vertical or overhead welds lower
interruption- either over or undervoltage or short circuit)
current values are necessary.
is not lit.
- The mechanical character of the weld will be determined
- Check that the nominal intermittance ratio is correct. In
not only by the current intensity used, but also by other
case there is a thermal protection interruption, wait for
parameters such as the diameter and quality of the
the machine to cool down, check that the fan is working
electrode, the arc length , the speed and position of the
properly.
user. It will also depend on the state of the electrodes in
- Check mains voltage. If it is either over 460V ac or under
use, which should be protected from damp by their
330V ac the machine does not function. When voltage is
packaging.
within these values the re-startis automatic.
WARNING: MAINS VOLTAGE OVER 460V A.C. CAN
WELDING PROCEDURE
DAM AGE THE MACHINE.
- Holding the mask IN FRONT OF THE FACE, strike the
- Check that there is no short-circuit at the output of the
electrode tip on the workpiece as if you were striking a
machine: if this is the case eliminate the incovenience.
match. This is the correct strike-up method.
- Check that all connections of the welding circuit are
WARNING: do not hit the electrode on the workpiece,
correct, particularly that the work clamp is well attached
this could damage the electrode and make strike-up
to the workpiece, with no interferring material or
difficult.
surface-coverings (ie. Paint).
- As soon as arc is ignited, try to maintain a distance from
- Protective gas must be of appropriate type (Argon
the workpiece equal to the diameter of the electrode in
99,5%) and quantity.
use. Keep this distance as much constant as possible
for the duration of the weld. Remember that the angle of
the electrode as it advances should be of 20-30 grades.
- At the end of the weld bead, bring the end of the
electrode backward, in order to fill the weld crater,
quickly lift the electrode from the weld pool to extinguish
______________(D)_______________
the arc.
CHARACTERISTICS OF THE WELD BEAD
Fig. I
BEDIENUNGSANLEITUNG
MAINTENANCE
WARNING!
NEVER REMOVE PANELS OR OPERATE WITHIN THE
UNIT WITHOUT DISCONNECTING THE MAINS POWER
SUPPLY. CHECKING OPERATIONS WHEN THE UNIT IS
ACHTUNG:
UNDER VOLTAGE MAY CAUSE SERIOUS ELECTRIC
VOR GEBRAUCH DER MASCHINE LESEN SIE
SHOCK BECAUSE OF POSSIBLE DIRECT CONTACT
SORGFÄLTIG DIE BETRIEBSANLEITUNG
WITH LIVE PARTS.
- Regularly inspect machine according to frequency of
use and dustiness of work area. Remove dust inside the
SICHERHEITSNORMEN
machine with a low pressure air flow.
- When check operaton is over reassemble panels
tightening all fixing screws well.
- Under no circumstances carry out welding operations
while the machine is still open.
- Vermeiden Sie direkten kontakten mit dem
Schweißstromkreis. Die Leerspannung des Generators
TORCH
kann unter Umständen gefährlich sein.
Avoid leaning the torch and its cable on hot parts; this would
- Bevor Sie Installationen oder Reparatur-und
cause melting of insulating materials and the torch would
Prümassnahmen ausführen, schalten Sie unbedingt
immediately be out of use.
das Gerät von der Stromquelle ab.
Periodically check the seal of all tubing and gas
- Führen Sie die Elektroinstallation gemäß der Normen
connections;
und Gesetze zur Vermeidung von Arbeitsunfällen durch.
Accurately match collet and collet body with the selected
Vergewissern Sie sich, dass die Steckdose korrekt
electrode electrode diameter in order to avoid overheating,
geerdet ist.
bad gas diffusion and poor performance.
- Verwenden Sie nie das Gerät in feuchter oder nasser
Umgebung oder bei Regen.
- Verwenden Sie keine Leitungen mit schlechten
Isolierung oder verstärkten Verbindungen.
14