Flux FBM 4000 Ex, Original Attachment, Page: 13 / 28

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Attachment Brushless motor FBM 4000 Ex 13 / 28
ENGLI
SH
Risk of injury!

Only start the motor when the pump is in the liquid.
4.1 Equipotential bonding
If the motors are operated together with the pump, comprehensive, clear equipotential
bonding is essential (earthing, Fig. 1)
Fig. 1: Earthing in hazardous locations
> Connect the equipotential bonding conductor (earth wire) (1) to the designated
screw on the explosion-proof motor and pump.
> If the connection between the motor and pump already provides a conductive path
(for pumps for flammable liquids), one of the equipotential bonding conductors may
be dispensed with.
> Mains connection (2) is to be established via an explosion-proof connector, an
explosion-proof terminal box or outside of the hazardous area.
> Only use hose lines (3) with conductive hose unions (see TRbF 50 Annex B.
(R < 10
6 Ω).
> Remove paint and dirt from all connection points of equipotential bonding conduc-
tors and transition points of the containers to the electrically conductive base ground
to ensure good conductivity.
The electrically conductive base ground (4) must be an integral part of the equipotential
bonding system.
If a conductive base ground is not available, equipotential bonding conductors must be
connected to all barrels and containers.
Note!
Explosion protection at the connection point is not necessary if
the power socket or the terminal box is clearly located outside
the hazardous area.
2
3
1
4
Ω
Ω
Ω