LUTZ B70H Manual De Instrucciones página 9

en
• Before starting up, the pump must be integrated into the equipotential bonding, i.e. equipotential
bonding of the pump tube with the tank, equipotential bonding of the motor with the tank or with
the pump tube if pump tube and drive motor are not conductively connected with each other.
BONDING is the electrical interconnection between containers. Bonding must be completed before
pumping begins. For better conductivity, paint and dirt shall be removed from the contact points.
GROUNDING is the electrical connection between a container and a "constant ground". A "constant
ground" would be a metal pipe (water pipe) or rod in contact with the earth. An underground tank
and piping connected to it would be inherently grounded by nature of the installation.
Both BONDING and GROUNDING of containers of flammable liquids are required under U.S.
Government OSHA regulations and National Fire Protection Association Code 77, static electricity.
The container must be grounded separately if not already given by the type of installation. Establish
equipotential bonding between container to be emptied and filled, e.g. with earthing lead or
by conductive ground which is conductively connected with both containers. If necessary, other
accessories must also be integrated to the equipotential bonding (→ Fig. 1).
Fig. 1
Legend:
(1)
Equipotential bonding wire
substrate, (5) conductive connection from hose to hose connector, (6) pump tube for zone 1,
(7) explosion-proof motor for zone 1, (8) earth potential, (9) suitable container for using flammable
liquids
, (2) explosion-proof connector, (3) conductive hose, (4) conductive
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