Transformer Oil Leak RepairBack to
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Transformers often develop leaks in a variety of areas such as radiator fins, flanges, circuit breakers, valves, and fastener assemblies. The leak on this radiator fin is so severe that oil coolant levels would drop, resulting in a catastrophic failure of this transformer. Previous method of repair was to drain coolant oil and replace complete radiator assembly.
One Minute Epoxy is compressed onto the leak area by hand using a polypropylene sheet. (Inserting a machine screw to slow the leak prior to applying One Minute Epoxy is advised.) Once the leak has stopped, the complete repair area was roughened to aSSPC-SP5 white metal finish using a wire bush. Repair area was then chemically cleaned using Cleaner Blend 300. Fasmetal was applied to a thickness of 1/8? over the One Minute Epoxy extending 5mm beyond the One Minute Epoxy. Following a partial cure of Fasmetal, (1 hour), FL10 and FL20 Primers were applied and each allowed to cure or dry for 15 minutes. Using both primers will improve adhesion of Flexane 80 Putty from 25 pli to 50 pli. Flexane 80 Putty was applied to a thickness of 1/2? ,extending beyond the Fasmetal by 2 inches. Flexane 80 Putty provided a long lasting, flexible, (350% elongation), final seal that is resistant to vibration and thermal cycling. Following full cure, (24 hours), Flexane 80 putty was then painted.