Meandering Welding Currents; Emc Measures - Fronius LaserHybrid Bedienungsanleitung

The electrode (rod electrode, tungsten electrode, welding wire, etc.) must
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Double the open circuit voltage of a power source can occur between the welding elec-
trodes of two power sources. Touching the potentials of both electrodes at the same time
may be fatal under certain circumstances.
Arrange for the mains cable to be checked regularly by a qualified electrician to ensure the
ground conductor is functioning properly.
The device must only be operated on a mains supply with a ground conductor and a socket
with a ground conductor contact.
Operating the device on a grid without a ground conductor and in a socket without a ground
conductor contact will be deemed gross negligence. The manufacturer shall not be held
liable for any damage arising from such usage.
If necessary, provide an adequate earth connection for the workpiece.
Switch off unused devices.
Wear a safety harness if working at height.
Before working on the device, switch it off and pull out the mains plug.
Attach a clearly legible and easy-to-understand warning sign to the device to prevent any-
one from plugging the mains plug back in and switching it on again.
After opening the device:
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If work on live parts is required, appoint a second person to switch off the main switch at
the right moment.
Meandering weld- If the following instructions are ignored, meandering welding currents can develop with the
ing currents following consequences:
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Ensure that the workpiece is held securely by the workpiece clamp.
Attach the workpiece clamp as close as possible to the area that is to be welded.
If the floor is electrically conductive, the device must be set up with sufficient insulating ma-
terial to insulate it from the floor.
If distribution boards, twin-head mounts, etc., are being used, note the following: The elec-
trode of the welding torch / electrode holder that is not used is also live. Make sure that the
welding torch / electrode holder that is not used is kept sufficiently insulated.
In the case of automated MIG/MAG applications, ensure that only an insulated wire elec-
trode is routed from the welding wire drum, large wirefeeder spool or wirespool to the wire-
feed unit.

EMC measures

Warning, electromagnetic field. Electromagnetic fields may cause as yet unknown dam-
age to health.
It is the operator's responsibility to ensure that no electromagnetic interference occurs in
electrical and electronic devices.
If electromagnetic interference is found to be occurring, the owner/operator is obliged to
take all necessary measures to prevent this interference.
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never be immersed in liquid for cooling
Never touch the electrode when the power source is switched on.
Discharge all live components
Ensure that all components in the device are de-energised
Fire hazard
Overheating of parts connected to the workpiece
Irreparable damage to ground conductors
Damage to device and other electrical equipment