Front Panel; Working Place - ESAB LHI 425 Manual De Instrucciones

5.1) Front Panel

1) ON/OFF switch - allows the power source to be energized.
2) PILOT LAMP - if its on indicates that the power source is working.
3) CURRENT POTENTIOMETER - to adjust the welding current value, in two ranges.
4) ARC FORCE potentiometer - its adjustment alters the short circuit current, the arc power penetration.
The adjustment of ARC FORCE potentiometer is in the low part of the scale provides smaller values
of the short circuit current and more stable arc. The adjustment on the upper part of the scale
increases the short circuit value and the penetration.
5) High-temperature Pilot Lamp - in the case an internal over heating this lamp goes on and welding
circuit are turned off, that is, the source does not provide welding current and the fan keeps on. When
the internal temperature of the source goes back to its normal value the lamp turns off and the
welding operation can be restarted.
6) LOCAL/REMOT - to select the command using the panel potentiometer or the remote control.
7) OUTLET - to connect the remote control.
8) DIGITAL VOLT/AMP. - its indicate voltage and current. Allows the reading of voltage and current after
open arc welding.
9) OUTPUT NEGATIVE TERMINAL - for welding cable connection.
10) OUTPUT POSITIVE TERMINAL - for connect the electrode holder cable.
6) INSTALLING
6.1) Receiving
When you receive a LHI 425 Pipeweld, remove all packaging which involves the equipment and check for
possible damage which could have happened by handling. Any complaints as to damage in shipping must
be directed to the carrier company.
Carefully remove any obstacle to the cooling air.
Note: In case a LHI 425 Pipeweld is not installed immediately, keep it in the
original packaging or stock it in a dry and ventilated place.

6.2)Working place

To have a safe and efficient operation many factors must be considered to determine where the welding
machine should be installed. Proper ventilation and cleanliness are necessary to cool the equipment and for
the operator's safety.
It is necessary to leave some room around the LHI 425 Pipeweld with at least 700 mm width for ventilation,
operation as well as preventive or corrective maintenance.
Installation of any device to filter ambient air reduces the air volume available for machine refrigeration and
can cause internal components overheating. Installation of any filtering device non authorised by the
supplier cancels equipment warranty.
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LHI 425 Pipeweld