Air Liquide OERLIKON DV 4004 CTL Instrucciones De Seguridad, Instalación Y Mantenimiento página 6

GB
TYPE OF BREAKDOWN
No functions operate.
Irregular wire feed.
Irregular wire feed.
Reduced welding power.
Porous or spongy welds.
Porous or spongy welds.
Gas supply does not switch off.
Presslng torch trigger
produces no result.
GENERAL MAINTENANCE
POSSIBLE CAUSES
Faulty power cord (one or more
phases disconnected).
Blown fuse.
Insufficient spring pressure.
Wire-guide sheath blocked.
Wrong race - unsuitable for wire,
or excessively worn.
Braking on coil excessive.
Oxidized, poorly wound,
poor quality wire, with
tangled or overlapping coils, etc.
Earth cable not connected.
Detached or loose connection on
switches
Faulty contactor
Faulty rectifier.
No gas.
Draughts in welding area.
Ciogged holes in diffuser.
Gas leakage due to rupture
in supply hoses.
Solenoid valve blocked.
Faulty pressure regulator.
Poor quality gas or wire.
Worn or dirty solenoid valve.
Faulty torch trigger, disconnected
or broken control cables.
Blown fuse.
Faulty power switch.
Faulty electronic circuit.
(GB) 5
CHECKS AND REMEDIES
Check and remedy.
Renew.
Try tightening regulating knob.
Renew.
Turn roller over or change it.
Loosen brake using adjusting screw.
Remedy by removing defective coils. If problem persists,
change the wire reel.
Check that the power cord is in good condition and make
sure that the ground clamps are flrmly fixed to the works
piece, which must be free of rust, grease and paint.
Check, tighten or renew, as necessary.
Check the state of the contacts and the mechanical effi-
ciency of the contactor
Visually check for signs of burn-out; if present, renew recti-
fler.
Check presence of gas and gas supply pressure.
Use a suitable screen. Increase gas delivery pressure if
necessary.
Clear clogged holes using compressed air.
Check and renew faulty component.
Check solenoid operation an electrical connection.
Check operation by removing the hose connecting the
pressure regulator to the power source.
Gas must be extra-dry; change the cylinder or use a differ-
ent type wire.
Dismantle solenoid; clean hole and obturator.
Remove the torch connection plug and short-circuit the
poles; if the machine operates properly, check the cables
and the torch trigger.
Renew using a fuse of the same rating.
Clean with compressed air. Ensure that wires are tightly
secured; renew switch if necessary.
Renew circuit.
GB