ATEX conversion of a HEINE three-column top-emptying centrifuge


At the customer's request, we modernized the hydraulically driven centrifuge from 1968 to the current state of the art.

For this purpose, the centrifuge was re-evaluated according to Machinery Directive 2006/42/EC and treated as a new machine. This includes a risk analysis and ignition source assessment of the centrifuge. The insights gained from this were implemented accordingly.

The conversion included the following items:

  • Replacement of the hydraulic drive with an electric drive
  • Installation of temperature monitoring for bearings
  • Installation of N2 inertization for bearings
  • Installation of a housing interlock
  • Installation of vibration monitoring
  • Installation of speed monitoring
  • Replacement of all other electrical components
  • New N2 inertization unit with redundant monitoring
  • New control unit for Ex ZONE 1
  • New safety-oriented plant control system
  • New painting of the machine body
  • UVV according to BGR500
  • Revision and material testing of all product-contact parts
  • Replacement of vibration dampers
  • Revision of process connections for inertization, filling, and washing
  • Remanufacture of the filling line and washing nozzles in HC22
  • New plant documentation including original operating instructions
  • New test book for centrifuges

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