During production shutdowns over the summer, our teams are available to carry out preventive maintenance of your variable speed drives, either on site or in the workshop.

Value of preventive measures

We recommend regular preventive maintenance of variable speed drives throughout their life cycle as part of your maintenance schedule. The aim is to ensure maximum efficiency and minimum costs for unforeseen repairs. Our corrective preventive measures consist of reconditioning the product, in-depth cleaning, and the individual analysis of each component, including, if necessary, their replacement. As for all of our procedures, the reconditioned variable speed drive undergoes full testing.

Sectional preventative measures

To secure the site's critical machine, Clairefontaine entrusts us with preventative measures for the sectional design of the paper making machine composed of 18 Masterdrives (8 of 250 KW and 5 of 75 KW). Our intervention aims to avoid any unplanned production stoppages that would be costly for the site, given that the machine’s production speed can reach 1,000 metres per minute (i.e., 60 kilometres and 15 tonnes of paper per hour).

Procedure

  • Clean-up
  • Upgrade
  • Thermal and endurance testing
  • Change of critical components
  • Ventilation
  • Capacity of the intermediate bus
  • Overhaul according to SIEMENS manufacturer specifications and procedures
DV GROUP: Authorised repairer

DV GROUP is the only accredited “Powerblock” repairer in Europe We are currently the only accredited “Powerblock” repairer in Europe. This certification means that we are authorized by Siemens to repair the powerblocks for the G150, G130, G180 and Micromaster 440 variable speed drives. Being a Siemens partner requires regular training on their product range. Our experts have therefore undergone training within Siemens in Germany to obtain this accreditation.

Training in England

GMC G120 and S120 Quality is the watchword of a “Solution Partner”. Our experts have therefore been trained in the repair of the GMC G120 and S120 ranges in the United Kingdom. This accreditation also enables us to increase our responsiveness via access to all spare parts and components in this range.