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ProMinent
®
Dulcodes UV-Desinfektionsanlage
Notes on safety of ProMinent
®
metering pumps
• Installations in potentially explosive atmospheres must be inspected by an “accredited
qualified” person. This applies in particular also for intrinsically safe electrical circuits.
• Drive motors must be secured by an appropriate motor protection switch. A motor
protection approved for this application must be used for Ex“e”-motors. (Protection
against heating due to overload)
• Observe all relevant standards e.g. DIN EN 60079, DIN EN 50020, DIN VDE 0165 and/or
DIN VDE 0118 “Installing electrical equipment in explosion-threatened areas”!
• When installing the metering pump, observe the directives for the installation of devices
in explosion-threatened areas, e.g. for Europe the European operator’s guideline 99/92/EC
(ATEX137)*, (in Germany implemented via the new operating safety ordinance (Official
Federal Gazette for 2002, Part 1, No. 70, issued in Bonn 2.10.2002))!
* previously ElexV
• Observe documents supplied with individual electric components!
• On principle, metering pumps in potentially explosive atmospheres must be equipped
with a safety overflow valve at the outlet side of the pump (serves as protection against
overheating due to overload and against sparks produced by shock due to overload
which has led to the breakage drive parts.)
• When using with flammable media:
- Diaphragm pumps with mechanically actuated diaphragm: no additional measures
necessary, however, version with diaphragm rupture indicator, version Ex“i”*, must be
used on principle.
- For all metering pumps for metering inflammable media applies: starting up and
emptying only supervised by a competent person.
- Inflammable media may only be lifted with stainless steel liquid ends. - For exceptional
cases, where this is not possible, also PTFE with carbon may be used, our versions TT_
are made of conductive plastics. In this case, special attention must be paid by the
user due to the lower mechanical stability.
• If using the metering pump for Europe e.g. the European operator’s guideline 99/92/EC*
(ATEX 137**), (in Germany implemented via the new operating safety ordinance (Official
Federal Gazette for 2002, Part 1, No. 70, issued in Bonn 2.10.2002) and the German
dangerous chemicals ordinance))!
* previously Ex Vo, Vb F
** previously ATEX118A
• Observe also all relevant standards e.g. DIN EN 60079-10/14 and DIN EN 50020 for
installations in explosion-threatened areas!
• Note all national directives which apply to the installation!
•Wear parts (diaphragms, bearings etc.) of metering pumps used in potentially explosive
atmospheres must be replaced after having completed 90% of their nominal product life.
• The lubricant supply must be regularly checked for lubricated pumps, for instance by
checking the fill level, visual inspection for leakages etc.
• The proper general function, in particular of the drive, must be safeguarded by regular
inspections (leakages, noises, temperatures, possible discoloration due to excess
temperatures....).
• Use original spare parts should exchange become necessary!
• Check that the pressure relief valve downstream from the pump is functioning correctly!
The pressure relief valve must prevent the gearbox from being overloaded and over-
heating in explosion-threatened workplaces!
• When cleaning plastic parts, attention must be paid to not generating any electrostatic
charge by rubbing excessively. - see danger sign.
• These measures are the minimum protection measures specified by ProMinent. Should
the user know about any further risks, it is his duty to eliminate them by taking
corresponding measures.