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Frequency converters can cause fault currents that are not
detected by means of a standard earth leakage circuit breaker.
So the machine may be operated with an AC/DC sensitive
RCCB (residual-current circuit-breaker) only.
Frequency converters have built-in capacitors that discharge
after switching off the machine. The machine’s connecting plug
may be pulled out of the outlet not before approx. 1 to 2
minutes after switching off the main circuit breaker.
5. Demands on operating personnel
The machine may only be operated by personnel
who have been trained for such, shown what is
involved and are authorised to do so. These
individuals have to know and act in accordance with
the Operating Instructions. The respective
authorisations for the operation personnel must be
clearly prescribed.
In addition to this, special qualifications are required
for the following activities:
Operation personnel being trained may at first only
work with the machine under the supervision of an
experienced individual. It should be confirmed in
writing that the training has been successfully
completed.
Only trained personnel may ever operate any of the
control and safety equipment.
All individuals that carry out any activities with the
machine have to read the Operating Instructions
and confirm by their signature that they have
understood the Operating Instructions.
