Hazards From Mains And Welding Current; Hazards When The Machine Housing Is Open; Vagrant Welding Currents - Fronius Transpocket 1500 Erdstrom Serviceanleitung, Ersatzteilliste

Hazards from
mains and
welding current
Hazards when
Whenever testing is being performed while the machine is still plugged into the mains or
the machine
after opening the housing, observe the following points:
housing is open
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Vagrant welding
currents
An electric shock can be fatal. Every electric shock is hazardous to life.
All welding cables must be firmly attached, undamaged and properly
insulated. Replace any loose connections and scorched cables immediately.
Have the mains and the appliance supply leads checked regularly by a
qualified electrician to ensure that the PE conductor is functioning correctly.
Only run the power source on a mains network with a PE conductor and
plugged into a power outlet socket with a protective-conductor contact.
If the power source is run on a mains network without a PE conductor and
plugged into a power outlet socket without a protective-conductor contact,
this counts as gross negligence and the manufacturer shall not be liable for
any resulting damage.
Unplug the power source from the mains. After opening up the welding
machine, make absolutely sure that this is "dead". Discharge any
components that may store an electrical charge.
If work needs to be performed on any live parts, there must be a second
person on hand to switch off the machine at the main switch in an
emergency.
Do not touch the power source, or any of its components
Remember that bare, electrically live parts such as exposed connections on the
mains switch, or soldering points on the LCA51 board, present a particular hazard
Owing to the high open-circuit voltage (92 V), there is also a risk on the secondary
side (around the secondary diode and the welding sockets)
Components that store an electrical charge continue to be dangerous even after the
machine has been unplugged from the mains
Wherever possible, discharge components such as these after unplugging the
machine from the mains
If the following instructions are not observed, vagrant welding currents may
occur. These can destroy earthed conductor terminals, the power source
and other electrical equipment
Ensure that the workpiece clamp is connected tightly to the workpiece
If the floor is electrically conductive, set up the welding machine on an
insulated base
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