Maintenance - ProMinent Hydro/4 HP4a Operating Instructions Manual

9

Maintenance

Safety information
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 monitoring 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
escaping, investigate the leak immediately and elim‐
inate the cause.
– Check the correct operation of the relief valve down‐
stream of the pump. In premises at risk from explo‐
sion, the relief valve should prevent the gear from
becoming overloaded and becoming hot.
– Observe the enclosed operating instructions for the
Ex motor.
– Only with pumps with a motor flange: Check /
replace worn gear ring etc. of the clutch.
– Only with add-on power end: Check / replace worn
gear ring/DZ element of the clutch.
– Check the seals of the pressure switch for leak-tight‐
ness.
– When cleaning plastic components, ensure that no
electrostatic charges are generated by excessive
friction.
– Always earth the discharge line and the suction line
against the pump to prevent electrostatic charge
before working on the pump.
– Have wear parts, such as bearings, replaced by
ProMinent Service when there is an identifiable inci‐
dence of unacceptable wear.
– Check whether the potential equalisation lines are
all sitting correctly with clean contacts.
– Check whether the earth lines are all sitting correctly
with clean contacts. Use the earthing drawings as
an aid – see Appendix.
– Only use genuine spare parts as replacements.
– Appropriate diagnostic equipment for bearing
damage is recommended for the premature detec‐
tion of bearing damage.
– Carry out inspections and repair in in compliance
with DIN EN IEC 60079-17 and ensure that they are
only performed by "experienced personnel with the
requisite knowledge".
– These measures are deemed to be minimum protec‐
tion measures by ProMinent. It is the duty of the
operator to take appropriate measures to eliminate
any further hazards known to him.
WARNING!
ATEX pumps in areas at risk from explosion
Static electricity can cause ignition sparks.
– Consider potential equalisation before you approach
any pump equipment that could be at a different
electrical potential (such as pipes or tools)
Maintenance
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