Maintenance and Service

Maintenance and Service

We at Rico-Werk are known by our customers for our fast and effective service. Our customer service department takes care of your equipment optimally. Systems from other manufacturers are also professionally and carefully maintained and repaired by us. We have all common spare parts in stock.


Around your electrostatic precipitator we offer you the following service:

  • Filter inspections
  • Dust analyses
  • Stream measurements
  • Testing and replacement of supporting and rotary insulators
  • Verification of all important functions on site
  • Inspection and repair of HV cables incl. terminations
  • Inspection and repair of bare wiring between HS unit and support insulator (also in stainless steel version)


Among other things, we offer the following on-site services for all HV makes:

  • Carrying out the oil change
  • Analyzing the insulating oil
  • Sealing of an existing transformer rectifier unit
  • Renewal of high voltage bushings
  • Renewal of low voltage bushings
  • Replacing old seals
  • Verification of all important functions
  • Renewal all connections
  • Removal of corrosion damage
  • Overhaul of power hoods
  • Retrofitting of automatic and manually operated disconnect earthing switches
  • Retrofitting of oil pans with certificate
  • Retrofitting of sunshades
  • Inspection of fixed installations according to BGV A3


Transformer rectifier units of older design (e.g. with expansion tank) are also repaired at Rico-Werk.

About Rico

Rico-Werk Eiserlo & Emmrich GmbH evolved since 1969 into one of the largest manufacturers of high-voltage DC systems for electrostatic precipitator in Europe. So far, we have built over 12,000 installations, which are in use worldwide. Our products include the top technology in the supply of high voltage electrical filters.

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