The general cooling fan manufacturers, in the specification book have stated the working temperature of the cooling fan, storage temperature, and dry humidity, etc., Jing Yangda technology for each customer ordered cooling fan, the relevant working temperature, the usual standard is -10 ~ 70 ℃, some special environmental temperature is lower, then there is no way?

 

For the environment where the humidity is not high, special ball bearings are used, and the low temperature can reach -40℃, if the humidity degree, causing water to freeze, then there is no way for the cooling fan to turn up

 

When the cooling fan is abnormal, such as not turning, noisy, we want to find out, but how to open it, first of all, the rotor and stator to separate, oil bearing and double ball bearing cooling fan, as long as the card ring removed, the leaves can be taken out, and hydraulic bearings are more difficult to remove, most of them can not be removed, if you still have not found the problem, you need to further disassemble the analysis of the cooling fan PCB board, as long as the bearings out of the stator can be pulled out

(1. Temperature rise: ambient temperature, the motor’s own temperature, the general operation of the motor temperature rise does not exceed 110 degrees)

 

2. Current: the need to fully consider the chip’s ability to withstand the design, the actual current will be lower than the chip’s nominal current

 

3. Voltage: the voltage stability of the customer’s product, and the ability to withstand the voltage of the cooling fan, some products are not stable voltage, will be on the high side

 

4. Anti-interference: some products, the environment where the cooling fan is installed has a strong static electricity, the need to add protection to the cooling fan treatment

 

5. Waterproof: Some products deal with humid environment, or work in water, we need to consider the waterproof level of the cooling fan

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