Each fan produced by the cooling fan manufacturer is inspected by each process to ensure that each fan is qualified before shipment. Here is to introduce the inspection specification of cooling fan motor.

Winding

1. Confirmation of the model of winding head

2. Confirmation of enameled wire model

3. Confirmation of winding pole starting

4. There should be no scratch during winding

5. Confirmation of resistance value of enameled wire

6. The finished wire shall not have full thread, hanging line, loose / scattered line, etc

Confirmation method for scratch of paint coating

1. Check whether there is paint coating scraped off on the winding die head;

2. 20 times microscope to observe whether there are scraps at the wire inlet of silicon steel sheet, and confirm whether there are scratches on the surface of the enameled wire;

3. Use the turn to turn insulation tester to confirm the inter layer insulation condition of the coil, and implement the thick wire diameter of the large machine.

4. Take 6 meters of enameled wire on the wire package for pinhole test, and the bubbles shall not be more than 20.

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