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General
Safety
Danger due to incorrect operation and incorrectly performed work.
This can result in serious injury and damage to property.
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An electric shock can be fatal.
This can result in serious injury and damage to property.
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Danger from an inadequate ground conductor connection.
This can result in serious injury and damage to property.
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Risk of scalding from hot system components.
This can result in severe scalds.
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WARNING!
All the work and functions described in this document must only be carried out by
trained and qualified personnel.
Read and understand this document.
Read and understand all the Operating Instructions for the system components,
especially the safety rules.
WARNING!
Before starting work:
Turn the power source mains switch to the "O" position
Disconnect the power source from the mains
Ensure that the power source remains disconnected from the mains until all work
has been completed
After opening the device, use a suitable measuring instrument to check that electri-
cally charged components (e.g. capacitors) have been discharged.
WARNING!
The housing screws provide a suitable ground conductor connection for earthing the
housing.
The housing screws must NOT be replaced by any other screws that do not provide
a reliable ground conductor connection.
CAUTION!
Before starting work, allow all hot system components to cool down to room tempe-
rature (+25 °C, +77 °F). For example:
coolant, water-cooled system components, wirefeeder drive motor
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