We have recently upgraded our repair workshop burn-off oven to a new Rotary Engineering unit. Rotary Engineering is a market leader in Burn-Off ovens, with this unit designed and manufactured specifically for the electric motor repair industry. This new oven has an internal volume of 10m3 will allow JJ Loughran to more than double our rewinding capability. One of the first motors was a 250Kw Siemens special High Output frame, shown in the attached pictures.
A burn-off oven cleans motors and their parts through a process known as Pyrolysis. Pyrolysis is where parts are heated in a controlled manner to burn off the insulation, resins, paint and other contaminants but leaves the motor stator undamaged.
Our high temperature burn-off oven operate up to 400˚C to safely burn-off old insulations prior to a full motor rewind. A correctly controlled burn-off process eliminates damage to the stator during the repair. A water injection system regulates oven temperature if ‘runaway’ conditions occur, with a 450˚C ultimate safety cut out.
To meet regulatory and JJ Loughran environmental standards our burn-off oven includes an afterburner chamber, which operates in excess of 850˚C which converts the output from the main chamber into carbon dioxide and water vapour.
Our burnout oven fully complies with the latest recommendations in BS EN IEC 60034-23:2019 which is the standard for the repair, overhaul and reclamation or rotating electrical machines. Full timing and temperature control is available through PLC controls with data output via USB. The oven’s control system maintains and records the temperature throughout the burn off process to ensure temperature limits are not exceeded and in turn ensuring the motor efficiency is not diminished.