Equipotential Bonding - FLUX F 550 Notice D'instructions Originale

internal part of the pump will always be filled by the liquid).

3.2 Equipotential bonding

If the motors are operated together with the pump, comprehensive, clear equipotential
bonding is essential (earthing, Fig.1)
Pump / motor connection
bearing flange or
planetary gear
Pump
suction end
of the pump
Category 1 (Zone 0)
Category 2 (Zone 1): ambiance close to category 1
Fig. 2: Earthing in hazardous locations
> Connect the earth continuity conductor (earth wire) (1) to the designated screw on
the explosion-proof motor.
> Connect the earth continuity conductor (earth wire) (2) to the designated screw on
the pump. If the connection between the motor and pump already provides a conduc-
tive path (for pumps for flammable liquids), one of the equipotential bonding conduc-
tors may be dispensed with.
> The containers should be grounded separately (3), if they are not already grounded
by the mode of installation.
> Only use hose lines (4) with conductive hose unions (see TRbF 50 Annex B.
6 Ω
(R < 10 ). This will provide a conductive path for the pump, hoses and fittings.
> Only use an explosion-proof plug or an explosion-proof terminal box when making
connections to the mains (5).
> Remove paint and dirt from all connection points of equipotential bonding conductors
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.
30 / 84
5
2
3
Original Manual High Viscosity Liquid Pumps Type F 550
and Sanitary Pumps Type F 560
drive motor
1
pump outlet
4
conductive hose
6
Ω
R < 10
3