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88
MPB-311
Electrical connection
9.3
Opening and closing the cover or service door
IMPORTANT!
For safe operation, the support beam, the cover and the service door
must be earthed. The service door and the cover are earthed via
protective conductors, an earthing point on the cover and an earthing
point on the support beam.
9.3.1
Opening and closing the cover
Opening the cover
1. Open the service door with the supplied key.
2. Disconnect the protective earth conductor for the cover at the earthing point of
the support beam.
1
Mag01308a
2
1
3
Fig. 59:
Loosen earthing cover
1 Service door
2 Protective earth conductor for cover, earthed via earthing point support beam
3
Support beam earthing point
3. Close the service door.