 When the distance between the stator and cover is very small, capillary phenomenon occurs easily, allowing flux to possibly penetrate inside.
 The cover includes a protrusion which provides a certain distance between the stator and cover. This prevents the flux from penetrating inside due to the capillary phenomenon. |
When solder-containing flux is used, the flux separates from the solder when it melts.
The cover is designed so that as the flux separates from the solder it is retained in the flux receptacle and prevented from penetrating inside. |
