Inspection and overhauling, conversion and retrofitting, repair work and maintenance -- as complete or partial service

Hermann Träxler GmbH performs all work around the draft tube mixer as complete service from one single source or as partial services: scheduling of measures, on-site diagnosis, technical designs and calculations, uninstallation, auto-crane and industrial diving work, all of the subsequent work on the uninstalled components including logistics, re-installation, commissioning, testing, instructions, etc. We offer our services nationwide and in entire Europe. In addition, we are happy to advise you on measures concerning aggregates made by other manufacturers such as Halberg, MAN, SIHI, Sterling and vonRoll.

Our general services include:

• For digester towers
  Development and construction, adaptation and installation of new gas hoods
• For draft tube mixers
  Conversions and overhauls of the impeller, mixer shaft and drive
• For existing gas hoods
  Integration of over- and under pressure safety relief valve and additional measuring and control devices
• For draft tube pipes
  Testing, repairs and reinforcement of the lateral guying and anchoring, adaptation to new mixers

Scheduled inspections and overhauls

Certified draft tube mixer systems are operated in ex-zones. According to the high technical demands, our operating and maintenance requirements recommend scheduling a general inspection of the system after 60,000 to 80,000 operating hours. These overhaul measures ensure the system works over the next maintenance interval.

Just ask us about the particulars.

Conversions and retrofits acc. to ATEX

We retrofit existing systems, so they are conforming to ATEX. The mixer will be equipped with the required monitoring systems of the latest state of the art and then, it is re-commissioned according to the effective ATEX (2014/34/EU).

TMA draft tube mixers from Träxler are ATEX-approved: Model Ex II 1G c/II 2G c T3, Certification No. TÜV 05 ATEX 7157 X. They are conforming to Directive 2014/34/EU for mechanical Ex-protection and they are type examined up to ATEX zone 0. This zone contains continuously or frequently an explosive atmosphere and requires increased safety. All measures for production, repair and installations are audited and certified annually by the TÜV.

Our construction department checks the design specifications and it calculates the natural frequency of the existing shaft in order to ensure specifically that the system runs smoothly.

Repairs and Maintenance

Just like any other technical system, it is possible that the operation of the draft tube mixer malfunctions. Hermann Träxler is equipped for such events and it also helps in this case. Don't hesitate to talk to us.