220V Cooling Fan core component damage

Motor is the most central parts whole "220V Cooling Fan", directly determines the fan performance and service life. If the store, you can determine the appearance of materials and design consumer purchase intentions, and want to open the motor cover comparison almost impossible. So if there are duplicitous fan motor housing to internal movement complete package, not easy to see inside the coil material. We can see wiring "220V Cooling Fan" outside the more structured, part of the formal product. It is worth mentioning that, when I open the back cover of the motor when the capacitor screws found next to the position of the motor has been broken up, and should not affect the use. Because of the back cover to protect, excluding transit bump and dismantling the possibility of damage, which is not at fault damage caused during the dismantling, the speculation may be "220V Cooling Fan" in the assembly tighten the screws too tight cause breakage.