BECKHOFF EL1904 - Manual (Page 6)

Foreword
4 EL1904
1.2 Safety instructions
1.2.1 Delivery state
All the components are supplied in particular hardware and software configurations appropriate for the
application. Modifications to hardware or software configurations other than those described in the
documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH & Co. KG.
1.2.2 Operator's obligation to exercise diligence
The operator must ensure that
 the TwinSAFE products are only used as intended (see section Product description);
 the TwinSAFE products are only operated in sound condition and in working order (see chapter
Cleaning ).
 the TwinSAFE products are operated only by suitably qualified and authorized personnel.
 the personnel is instructed regularly about relevant occupational safety and environmental
protection aspects, and is familiar with the operating instructions and in particular the safety
instructions contained herein.
 the operating instructions are in good condition and complete, and always available for reference
at the location where the TwinSAFE products are used.
 none of the safety and warning notes attached to the TwinSAFE products are removed, and all
notes remain legible.