WARNING!
ATEX pumps in areas at risk from explosion
– Carry out a general check to ensure that the
system is working properly, particularly the
power end and bearings, by regularly moni‐
toring it (for leaks, noises, temperatures, smell,
etc.).
– Do not allow the pump to run hot due to a lack
of oil.
With lubricated metering pumps, regularly
check for the presence of lubricant, for
example by checking the liquid level, visual
leak control, etc. If oil is leaking, examine the
leakage point immediately and eliminate the
cause.
– Check the correct operation of the relief valve
downstream of the pump. In premises at risk
from explosion, the relief valve should prevent
the gear from becoming overloaded and
becoming hot.
– Observe the enclosed operating instructions for
the Ex motor.
– When cleaning plastic components, ensure
that no electrostatic charges are generated by
excessive friction.
– Prevent serious deposits of dust on the motor.
– Consider potential equalisation before you
approach any pump equipment that could be at
a different electrical potential (such as pipes or
tools).
– Replace wear parts, such as bearings, when
there is an identifiable incidence of unaccept‐
able wear.
– Appropriate diagnostic equipment for bearing
damage is recommended for the premature
detection of bearing damage.
– Check whether the potential equalisation lines
are all sitting correctly with clean contacts. Use
the equipotential bonding drawings as an aid –
see Appendix.
– Check whether the earth lines are all sitting
correctly with clean contacts. Use the equipo‐
tential bonding drawings as an aid – see
Appendix.
– Only use genuine spare parts as replacements.
The entire installation supplied is provided ex works with the nec‐
essary potential equalisation lines.
Electrically connect an additional potential equalisation cable from
the potential equalisation cables from this system cleanly and per‐
manently to an electrically clean potential equalisation point, e.g.,
to a potential equalisation bar on site.
Measure the surface temperature at maximum load. Additional
information – refer to the operating instructions for the spur gears.
Check the pump installation for:
Potential equalisation line (required in
the area at risk from explosion)
Check the temperature of the spur
gears
Inspection, daily
Safety chapter
20
