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Operational safety
Electric shocks can be caused when touching the point of the
torch (wire) when the open circuit voltage is more than 48 V
and simultaneous skin contact with metal parts at the mass
potential of the welding machine. Protective measures by a
suitable insulation are absolutely necessary. The open circuit
voltage is indicated on the type plate of the welding machine.
3.4.3. Protective conductor
Danger of severe personal injury because of improper mains
connection
In the case of improper mains connection of the machine
severe shock currents may arise.
In connection with the welding power source the protective
conductor may be destroyed by faulty mass connections with
earthed welding systems.
• Make sure that the protective conductor connection is
correct and tight! (VDE rules).
• The functioning of the protective conductors, the supply
network and machine cables must be checked before
commissioning and in regular intervals by a skilled
electrician.
It is regarded as gross negligent to operate a power source
on a supply network without protective conductor. The
manufacturer is not liable for damages occurred hereof.
Before working on the power source, switch off the machine
and disconnect the mains plug. Please use a warning sign as
protection against unintended restart.
A second person should be present for safety reasons if
working on voltage-carrying parts is required.
The side panels and covers of the QINEO series are earthed
by means of screws and toothed conical spring washers.
The conical spring washers guarantee an electro-conductive
connection between the side panel/cover and the housing.
Please make sure that the conical spring washers are correctly
re-installed after a removal and reinstallation of the side
panels and cover.
WARNING!
DANGER!
ATTENTION!
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