The correct first start after repair is no less important than the repair itself. A mistake at this stage can ruin all your work. Let's look at how to safely start the engine after repair.
Checks before starting
- Measure the insulation resistance with a megger - it should be normal.
- Check the free rotation of the shaft manually.
- Make sure the connection is correct (star/delta circuit according to the passport).
- Check reliability grounding.
- Inspect the terminal box and the tightness of the contacts.
First start
The first start is carried out idling, without load:
- Apply power briefly and check the direction of rotation.
- Listen - there should be no extraneous noise or knocking.
- Let it run for a few minutes, controlling heating and vibration.
Run-in and control
After successful idling, the engine is run-in, gradually increasing the load. Control:
| Parameter | Normal |
|---|---|
| Phase current | Uniform, not higher than nominal |
| Case heating | Within class insulation |
| Vibration | Minimal |
| Noise | Smooth, without knocking |
High-quality repairs always end with acceptance tests in the service - then the engine arrives to you already verified. If after rewind any deviations are noticed, do not operate the machine and contact a specialist.
Do you need a repair that is fully tested and guaranteed to start correctly? Elektromotors engineers in Tashkent hand over the engine to a proven one - contact us.