Transformer Oil Air Coolers

Service for Transformer Cooling Systems

Cleaning and upgrading fans on the transformer oil air cooler improves performance and efficiency, enabling the transformer to operate at maximum power with maximum cooling capacity, reliably and effectively for longer. While the fans are built for heavy duty, they can degrade due to continuous use and through accumulation of dirt and other pollutants. The Kelvion Service includes cleaning, maintenance, spare parts, as well as complete overhaul and upgrades to meet existing or new operational demands.

Our Service Portfolio

Start-Up & Onsite Services

  • Assistance to assembly and disassembly, shipping and transport
  • Supervision of installation by Kelvion experts

Spare Parts & Spare Part Solutions

  • Fans, accessories
  • Initial spare parts
  • Spare part packages
  • Delivery and assembly of spare parts

Repairs, Overhauls & Maintenance

  • Complete overhaul or repair
  • Professional repair in workshop
  • Renewal of the external coating/ re-coating
  • Assistance to assembly and disassembly, shipping and transport
  • Cleaning of inner and outer side
  • Extensive damage assessment and elimination
  • Flow measurement on site
  • Optimization of air side to reduce noises
  • Adaptation of air and oil side to new operational demands
  • Overhaul of fan motors e.g. replacement of bearings and sealings, speed measurement

Upgrades & Replacements

  • Adaptation of air and oil side to new operational demands
  • Complete cooler as a replacement of Kelvion and non-Kelvion products
  • Optimization of air side to reduce noises

Monitoring, Consulting & Training

  • Training on cleaning of the air side
  • Pressure, temperature and volume flow systems can be added at the cooler
  • Electrotechnical inspection of fans, electrical connections and electrical values
  • Lifetime evaluation of zinc layer of finned tube field regarding remaining lifetime

Upgrading the fans for better transformer performance

Over time the fans on a transformer oil air cooler will degrade, through extensive use and contamination. Should the fans fail, the transformer loses the maximum required cooling capacity, which means that the transformer cannot perform properly and loses maximum power. In some cases the equipment may need adapting on the air or oil side to meet new operational demands. Kelvion can modify fans from AC to EC, and upgrade fans to reduce noise. The Kelvion service also includes upgrading to hinged doors for easier access and cleaning.


Service Locations Transformer Oil Air Cooler

With our network of locations worldwide, we can offer our customers maximum and reliable service availability wherever they are and at any time.


Kelvion S.r.l. (Service)Italy
Via Lodovico Borsari, 35/A
43126 Parma

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