TBi Industries PP-TX, Руководство по эксплуатации

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Operating instructions TBi PP-TX welding torch TBi Industries GmbH
Page 56 / 63 Subject to change without notice.
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2020 TBi Industries GmbH
4.4 Adjusting the pressing force
The pressing force of the counter-pressure roll can be adjusted to accommodate different welding wire
materials. This is performed using the adjusting screw on the tension spring holder. The pressing force must be
adjusted in such as way that a soft welding wire is not deformed and to prevent slippage of the welding wire.
The welding wire must be fed smoothly without stopping in order to ensure optimal welding results.
Please note the following:

Always set the contact pressure as weak as possible. The optimum
setting depends on the welding wire used. A hard wire will tolerate even
a strong contact pressure without problems.

Particularly for aluminum wire, the contact pressure must be adjusted
carefully to achieve good feeding properties. Let the wire run out of the
torch a little and check whether the surface is damaged and/or whether
any parts of the wire have been flattened. If yes, reduce the contact
pressure by unscrewing the adjusting screw (14a).

If the wire cannot be fed smoothly, the contact pressure should
probably be increased. It is easiest to check for correct setting during
welding. If the arc has a tendency to burn back too strong or the length
does not remain stable, increase the pressing force by tightening the
adjusting screw (14a).
Steps for correcting the pressing force:
Symptoms Possible causes Measures
Welding wire is
deformed by the drive,
leading to wire feeding
problems
Pressing force of the counter-pressure roll is
too high Gradually loosen the adjusting screw (14a)
of the tension spring holder, check the wire
for deformation until the wire is fed smoothly.
The welding wire is fed
in pulses The contact pressure of the counter-pressure
roll is too low, the welding wire can only be
fed irregularly. Gradually tighten the adjusting screw (14a)
of the tension spring holder, until an smooth
wire feed is achieved.
4.5 Adjusting the motor characteristic
If the Push-Pull torch is not connected via the TBi control board, the motor characteristics of the Push-Pull motor
and main feed unit must be calibrated. For this, please follow the instructions of the power supply manufacturer
(for connection via Push-Pull interface) or for the TBi Syntronic.