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M-LB-(Ex-)2000-System – Surge Protection Barriers
Dismounting, Maintenance, and Repair
5
Dismounting, Maintenance, and Repair
Danger!
Danger to life from using damaged or repaired devices.
Using a defective or repaired device can compromise its function and its electrical safety.
•
Do not use a damaged or polluted device.
•
The device must not be repaired, changed or manipulated.
•
If there is a defect, always replace the device with an original device from Pepperl+Fuchs.
Caution!
Property damage from use of inappropriate tool
Using an inappropriate tool may damage the housing.
•
Use a slot-head screwdriver with a size of 3.0 x 0.5.
5.1
Signal Loops Disconnection for Checking
During maintenance and repair, you can disconnect the signal loops for the following checks.
•
Insulation check of the cable on the unprotected side
•
Check of the signal loops
Note!
See chapter 3.3 for further information.
5.2
Disconnection of the Circuits
Danger!
Explosion hazard from live wiring of non-intrinsically safe circuits
If you connect or disconnect energized circuits in a potentially explosive atmosphere,
sparks can ignite the surrounding atmosphere.
Only connect or disconnect energized non-intrinsically safe circuits in the absence
of a potentially explosive atmosphere.
Disconnecting Circuits
1. Disconnect the protected signal lines.
2. Disconnect the unprotected signal lines.
3. Disconnect the grounding or the shielding.
The terminals are screw terminals or spring terminals. See figures.
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