Flooding does not always mean engine death. Let's tell a case of how Elektromotors engineers in Tashkent restored an engine after a flood without expensive rewinding.
Situation
After a pipe burst in the workshop, a pit with several engines was flooded. Water got inside the machines, the insulation resistance dropped to almost zero - the engines were “electric” and would not start. The customer was preparing for an expensive rewinding of all machines.
Diagnostics
Primary diagnostics showed something important: the winding insulation itself is not destroyed, the problem is only in moisture. This meant that the engines could be saved by drying.
Restoration
- Disassembling the engines, washing them from contaminants.
- Professional drying of the windings in a temperature-controlled oven.
- Periodically measuring the insulation resistance until the norm is restored.
- Impregnation with moisture-resistant varnish for protection.
- Replacement of bearings where it got in water.
Result
| Indicator | Result |
|---|---|
| Insulation | Restored by drying |
| Rewinding | Not required |
| Savings | Significant |
Most of the engines were saved without rewinding - only by drying, impregnation and replacing bearings. It's many times cheaper. The key was quick diagnosis: the sooner you dry a wet engine, the higher the chance of avoiding rewinding.
Did the engines flood at your facility in Tashkent? Don’t rush to write them off - Elektromotors engineers will evaluate them and, if possible, restore them by drying them - contact us.