Lampert Werktechnik GmbH
Lampert Werktechnik GmbH
OPERATING MANUAL PUK D5
EN
4.6 Danger due to mains and welding current
Electric shock poses a fundamental risk of death and may be fatal. Do not touch live
parts inside and outside the device. Ensure a sufficiently insulating and dry substrate
or cover to ensure suitable personal and personnel protection with regards to earth or ground potential.
The substrate or cover must completely cover the entire area between the body and earth or ground potential.
All cables and lines must be sound, undamaged, insulated and sufficiently dimensioned. Loose connections,
charred, damaged or inadequately dimensioned cables and lines must be replaced immediately. Manually
check the current connections for firm seating before each use. Never wind cables or lines around the body or
body parts.
Double the no-load voltage of a welding device can arise between the electrodes of two welding devices for
example. If the potentials of both electrodes are touched simultaneously, there may be a risk of death under
certain circumstances. Have mains and device supply lines checked regularly by an electrician to ensure
the functionality of the protective conductor. Only operate the device on a network with protective conductor
and a socket with protective conductor contact. If the device is operated on a network without a protective
conductor and a socket without a protective conductor contact, this constitutes gross negligence.
The manufacturer is not liable for damages resulting from this. Switch off devices when not in use. Switch off
the device and unplug the mains plug before working on the device. Display a clear and comprehensible
warning sign to prevent the device being plugged in again at the mains plug and being switched on again.
4.7 Stray welding currents
If the following information is not observed, stray welding currents may arise. These could cause the following:
♦
Risk of fire
♦
Overheating of components that are connected with the workpiece
♦
Destruction of protective conductors
♦
Damage to the device and other electrical equipment
Ensure secure connection of the workpiece clamp with the workpiece. Fasten the workpiece clamp as close
to the welding area as possible. In case of an electrically conductive floor, ensure device installation with
sufficient insulation against the floor.
4.8 EMC device classifications
Devices of emissions class A:
♦
are only designed for use in industrial environments
♦
can cause grid-bound and radiated interference.
Devices of emissions class B:
♦
satisfy the emissions requirements for residential and industrial areas. This also applies in particular
to residential areas, in which the energy supply comes from the mains low voltage grid.
EMC device classification in accordance with the rating plate or technical data. EMC measures: In special
cases, it is possible that influences can arise for the intended application area despite compliance with the
standardised emissions limit values (e.g. if sensitive devices are at the installation site or if the installation
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