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General prerequisites for operating the devices
General requirements for safe operation of the devices:
•
National regulations for operating electrical systems and equipment must be observed in commercial
facilities.
•
The laboratory or classroom must be overseen by a supervisor.
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A supervisor is a qualified electrician or a person who has been trained in electrical engineering,
knows the respective safety requirements and safety regulations and whose training has been
documented accordingly.
The laboratory or the classroom must be equipped with the following devices:
•
An emergency-off device must be provided.
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At least one emergency-off device must be located within, and one outside of the laboratory or the
classroom.
•
The laboratory or classroom must be secured so that operating voltage and compressed air supply
cannot be activated by any unauthorized persons, for example with:
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A key switch
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Lockable on-off valves
•
The laboratory or classroom must be protected by residual current devices (RCDs).
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Electrical devices (e.g. power supply units, compressors and hydraulic power units) may only be
operated in training rooms which are equipped with residual current devices.
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Type B residual current circuit breakers with a residual current of ≤ 30 mA must be used.
•
The laboratory or classroom must be protected by overcurrent protection devices.
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Fuses or circuit breakers
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No damaged or defective devices may be used.
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Damaged devices must be banned from further use and removed from the laboratory or classroom.
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Damaged connecting cables, pneumatic tubing and hydraulic hoses represent a safety risk and
must be removed from the laboratory or classroom.
© Festo Didactic 8068243
Hydraulic power packs with load sensing variable displacement pump and constant displacement pump
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