ESAB LHF 405 PIPEWELD, Service Manual

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Edition 071024
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OPERATION
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Select suitable earth and return cables and connect them to the terminals
and -- on the front of the rectifier. Connect the return cable to the work
piece.
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Set switch (1) to position ”I”. The display (4) will light and the fan will start.
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Select the welding method using the switch (6).
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Adjust the welding current:
a. if the switch (7) is set to “INT” (local current setting), the current should be
set with knob (10),
b. if the switch (7) is set to “EXT1” (remote wired current setting), the current
should be set with knob on remote control unit, that should be connected to
terminal (11),
c. if the switch (7) is set to “EXT2” (remote wireless current setting), the current
should be set with use of remote control unit N02 in following way:
1 set the welding current with knob on N02,
2 put the unit on workpiece, make sure that metal bottom of the unit has good
contact with workpiece,
3 touch with electrode the round metal terminal on the top of remote control unit
and wait untill the red control light on the unit turns OFF.
The current is set.
During current setting its value can be observed on display (4), provided that
switch (3) is set towards “A”.
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The rectifier is now ready for welding.
Controls and connections