Special Conditions; Equipotential Bonding And Earthing; Conductive Hoses / Hose Connections - lutz PP 41-R-DL Originalbetriebsanleitung

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10.3 Special conditions

► Ensure that additional fitted components (e.g.
coupling, gear, drive motor) are located outside of
the mobile container.
► The requirements of unit group II (sub-class II B),
category 2, temperature class T4 have to be met.
► Ensure that the drive motor (electrical or with
compressed air) may not exceed an output of 0.88
kW and a speed of 17,000 1/min.
► Do not use the drum pump for stationary operation.
► The operation of the pump has to be monitored
during the pumping process in order to avoid dry
running and empty running phases.
10.4 Equipotential bonding and
earthing
► Before starting up, an equipotential bonding must
be established between the pump, the container
to be emptied and the container to be filled.
► Clamp the equipotential bonding cable (order
no. 0204-994) to create an equipotential bond
between the pump and the container to be
emptied. Paint and dirt should be removed from
the connecting points in order to improve the
conductivity.
► Equipotential bond between the containers to
be emptied and to be filled via a conductive
substrate (e.g. a conductive grating).
► Ensure that a conductive transition between
container and earthing potential is available.
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1 Equipotential bonding cable
2 Conductive substrate or connection of an
equipotential bonding cable to each of the two
drums,
3 Galvanic connection (low contact resistance
towards earth),
4 Conductive connection between hose and hose
connector
5 Zone 0 pump tube
6 Motor with inaccessible metal parts
7 Nozzle
8 Conductive hose
9 ATEX-Identification motor
10.5 Conductive hoses / hose
connections
► Use an electrically conductive hose.
► Ensure that the ohmic resistance between the
fittings does not exceed the limited value depending
on the respective hose type. (→ DGUV Information
213-053).
► Ensure that the nozzle is conductive.
► Ensure that the hose connection provides a highly
conductive transition between hose and pump tube
as well as the nozzle.
► With poorly conductive transitions: Earthing all
conductive parts.
► Identify and examinate hose lines and armatures
according to DIN EN 12115.
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