With the continuous increase of equipment in factories, more and more mechanical equipment is being purchased. However, in order to extend the use of mechanical equipment, it is necessary to dissipate heat. As the application situation and environmental temperature change, DC cooling fans with different speeds are sometimes needed to meet the cooling needs of the equipment. DC cooling fans are a type of cooling device that uses DC voltage and electromagnetic induction to convert electrical energy into machinery and drive the rotation of the fan blades. Simply put, it relies on coils and ICs to continuously switch, and the induction magnetic ring drives the fan blades to rotate. Therefore, it has good heat dissipation effect and is widely used. So everyone knows how to handle Are there common faults with DC cooling fans? [Sensitive word] Shenzhen Yingtian Electromechanical Equipment Co., Ltd. will provide guidance for everyone.

　Common troubleshooting methods for DC cooling fans:
　　
1、 Abnormal noise occurs:
　　
Reason: When the abnormal sound rotates, a "dada" collision sound can be heard, but sometimes there is no sound. The chassis is densely packed with messy data and power cables, and sometimes the cable ends touch the DC cooling fan blades. As a result, an abnormal sound was emitted when the fan was rotating.
　　
Solution: You can use rubber bands, adhesive tape, etc. to tie up the scattered data and power cables inside the chassis, avoiding passing over the DC cooling fan.
　　
　2、 Poor rotation:
　　
Reason: The speed of the DC cooling fan is relatively slow and noisy when it is first turned on, but it returns to normal after a period of time. After replacing the same fan and using it for a period of time, the above phenomenon still occurs. The indoor temperature where the DC cooling fan is located is too low, causing the lubricating oil on the rotating bearings to fail.
　　
Solution: Inject antifreeze lubricating oil into the DC cooling fan and pay attention to the temperature of the operating environment.
　　
3、 Position offset:
　　
Reason: The DC cooling fan automatically moved to a fixed position. The buckle fixing the radiator failed due to resonance caused by the rotation of the fan, resulting in fan displacement.
　　
Solution: Replace the DC cooling fan with a new buckle.
　　
　4、 Noisy noise appears:
　　
Suddenly making a special noise during use, even louder than the sound emitted by the chassis power supply, after inspection. Originally, due to long-term maintenance, too much dust had accumulated on the surface of the DC cooling fan and the gaps in the radiator. The lubricating oil of the fan motor has completely dried up, causing a motor like roar.
　　
Solution: Separate the DC cooling fan from the radiator, and clean the radiator directly with tap water. You can wipe it with soft paper first, and use a medical cotton swab to wipe the gaps. Open the plastic sticker on the back of the fan and use ordinary sewing machine oil to drip 1-2 drops into the movement. You can also use cream like lubricating grease for toy four-wheel drive cars, but the amount should not be too much.