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Other important considerations for dosing pumps in ex-zones
9.8
Troubleshooting
WARNING
•
You should make regular checks (on leakages, noise, temperatures, odours, etc.) to
ensure general regular operation, particularly with regard to the actuator and bearing.
•
Do not allow the pump to overheat due to a lack of oil!
For lubricated dosing pumps, you should make regular checks to ensure sufficient
lubricant is present, e.g. by checking the level of lubricant, visual check for leakages,
etc. If oil is leaking, you must locate the point of leakage immediately and eliminate
the cause of the leak.
•
When cleaning plastic components, you should ensure that no electrostatic charge is
created through excessive friction. - see warning sign
•
The following applies to all dosing pumps when metering combustible media: Start up
and drain only under the supervision of an appropriately qualified person.
•
Expendable parts, such as bearings, must be replaced when there are visible signs of
unacceptable wear. (It is not possible to calculate the nominal service life for lubricated
bearings.)
•
Original spare parts must be used as replacements.
•
Inspection and repair must be carried out in compliance with DIN EN IEC 60079-17 and
should only be done by "experienced personnel with the necessary expertise" (section
4.2).
9.9
Repair
WARNING
•
The following applies to all dosing pumps when metering combustible media: Start up
and drain only under the supervision of an appropriately qualified person.
•
You should make regular checks (on leakages, noise, temperatures, odours, etc.) to
ensure general regular operation, particularly with regard to the actuator and bearing.
9.10
Decommissioning
WARNING
•
The following applies to all dosing pumps when metering combustible media: Start up
and drain only under the supervision of an appropriately qualified person.
Page 23
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Table of Contents
Troubleshooting
