DONGGUAN XINGDONG ELECTRONICS CO., LTD.
Add: NO.2, Dagao Hengfeng 2nd Road, Changping Town, Dongguan, Guangdong, China
Tel:+86-769-83660708
Fax:+86-769-83660718
Email:info@d-fan.com.cn
URL:http://gzznb.cn/eng/
1, making the blades issued a "buzzing" sound when rotating, "Micro Cooling Fan" motor bearings loose.
2, causing the fan blades are stuck or grazing, the fan motor bearings nipple axial deviation occurs, issued a "chug" sound.
3, due to the gasket wear, "Micro Cooling Fan" axial movement of the motor, the axial gap increases, issued a "chug" sound after power.
4, "Micro Cooling Fan" easily into the fan bearings with dust condensation together when the ambient temperature is low, the fan motor bearings are used in low-grade oil, increasing the resistance to rotation of the motor, the motor issued a "buzzing" sound.