Symbols And Their Meanings; Electrode Welding - REHM BOOSTER 140 Instrucciones De Servicio

3.1.2

Symbols and their meanings

The symbols on the control panel have the following meanings:
No-load voltage is applied to the torch or the electrode holder.
Temperature indicator.
The yellow LED lights up when the maximum permitted temperature of the unit
is exceeded. As long as this LED is on, the output current is switched off. After
the unit has cooled down, the LED goes out and welding can be restarted
automatically.
If this symbol flashes, the internal monitoring system has tripped. Switch the
mains switch off and back on to reset the unit. Please contact the REHM
Customer Service Department.
3.2

Electrode welding

The unit is suitable for use with all the usual types of electrode, the maximum current being
140 A. This current can be used to weld the usual types of electrode up to a diameter of 3.25
mm.
For the polarity and current settings for individual electrodes, please refer to the electrode
manufacturer's instructions. The electrode holder is plugged in at the welding current socket
which has the polarity specified for the electrode (see chapters 3.4 and 3.5).
You only need to select the appropriate welding current for your welding application and for
the electrode selected for this purpose, and to select the right polarity. The rest is handled for
you by the Booster 140. The following functions automatically ensure good welding results:
3.2.1 Hot Start
When the welding work begins, the Booster 140 supplies for a short time a higher current
than the welding current selected (max. 140A). This ensures good ignition and a steady arc
very quickly.
3.2.2 Arc Force
During the welding work, the Booster 140 monitors the welding current and the welding
voltage. If the Booster 140 detects that a droplet transfer takes place in a short-circuit, it
supplies for a short time a higher current than the welding current selected (max. 140A) in
order to quickly eliminate this short-circuit. As a result, the Booster 140 prevents failure or
sticking of the electrode during welding.
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