Stahl 8549/1, Operating Instructions Manual, Page: 46 / 52

Putting into Service
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168779 / 854960300010
2011-09-23·BA00·III·en·02
Load and Motor Switch, Load-Break
Switch 8549/1
8.4 Back-Up Fuse
 Provide suitable back-up fuses, see chapter 5 "Technical Data".
9 Putting into Service
Before commissioning

Check if cables and lines are clamped properly.

Check the torques.

Ensure that the connection has been correctly made.

Ensure that all screws and nuts are fully tightened.
10 Maintenance
10.1 Regular maintenance work

Consult the relevant regulations (e.g. IEC/EN 60079-17) to determine the type and

extent of inspections.

Plan the intervals so that any defects in the equipment which may be anticipated are
promptly detected.

Separate plugs and sockets at regular intervals to prevent contact corrosion
To check as part of the maintenance schedule:
X
Check if the cables are clamped properly.
X
Check that cable entries are tight
X
Check the state of the cable entries
X
Check the seals for damage.
X
Inspect the device for signs of visible damage.
X
Compliance with the permitted temperatures in accordance with IEC/EN 60079-0.
X
Make sure that the device is used according to its designated use
WARNING
Risk due to unauthorised work being performed on the device!
 Risk of injury and damage to equipment.
 Assembly, installation, commissioning and servicing work must only be performed by
personnel who are both authorised and suitably trained for this purpose.
WARNING
Danger from energised parts!
 Risk of severe injuries.
 All connections and wiring must be disconnected from the power supply.
 Secure the connections against unauthorised activation.
WARNING
Short-circuit in the main circuit
 Contacts may be damaged.
 Replace the switch after each short circuit in the main circuit (the element
is hermetically sealed and the state of the switching contacts cannot be
checked).