ProMinent Sigma / 2 Basic S2Ba, Руководство по эксплуатации

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11 Maintenance
11.1 Safety information
ATEX pumps in areas at risk from explosion
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Carry out a general check to ensure that the system is working prop‐
erly, particularly the power end and bearings, by regular monitoring
(for leaks, noises, temperatures, smell ...).
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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 elimi‐
nate the cause.
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Check the correct operation of the relief valve downstream of the
pump. In premises at risk from explosion, the relief valve should pre‐
vent the gear from becoming overloaded and becoming hot.
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Observe the enclosed operating instructions for the Ex motor.
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Check / replace the worn gear ring etc. of the clutch.
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When cleaning plastic components, ensure that no electrostatic
charge is generated by the use of too dry a cloth.
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Prevent serious deposits of dust on the motor.
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Consider potential equalisation before you approach any pump equip‐
ment that could be at a different electrical potential (such as pipes or
tools).
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Only with stroke control motor: Wait 3 minutes after switching off
before opening the housing.
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Replace wear parts, such as bearings, when there is an identifiable
incidence of unacceptable wear.
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Appropriate diagnostic equipment for bearing damage is recom‐
mended for the premature detection of bearing damage.
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Check whether the potential equalisation lines are all sitting correctly
with clean contacts. Use the equipotential bonding drawings as an aid
– see Appendix.
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Check whether the earth lines are all sitting correctly with clean con‐
tacts. Use the equipotential bonding drawings as an aid – see
Appendix.
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Only use genuine spare parts as replacements.
ATEX pumps in areas at risk from explosion
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Static electricity can cause ignition sparks
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Always earth the pressure line and suction line first before working on
the pump.
WARNING!
Danger from hazardous substances!
Possible consequence: Fatal or very serious injuries.
Please ensure when handling hazardous substances
that you have read the latest safety data sheets provided
by the manufacture of the hazardous substance. The
actions required are described in the safety data sheet.
Check the safety data sheet regularly and replace, if
necessary, as the hazard potential of a substance can
be re-evaluated at any time based on new findings.
The system operator is responsible for ensuring that
these safety data sheets are available and that they are
kept up to date, as well as for producing an associated
hazard assessment for the workstations affected.
1. Disconnect the pump from the power supply.
2. Depressurise the pump.
3. Use a suitable flushing medium to flush the pump, referring to the
material safety data sheet for the feed chemical.
Before commencing all work
Maintenance
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