What problems need to be tested after the cooling fan is produced?
The cooling fan needs to be tested after the production is completed through a series of processes. After the test, the fan with no problem will go to the next step of labeling. The fan tester with the problem will select the problem and classify the problem for reprocessing, then the main test What are the problems? The following cooling fan manufacturer Tongchi will tell you:
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u003cbru003e Problems in the production test of cooling fans:
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u003cbru003e 1. Abnormal current
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u003cbru003e 2. Abnormal sound
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u003cbru003e 3. Super Constant
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u003cbru003e 4. Jitter
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u003cbru003e 5. Reverse
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u003cbru003e Cooling fan protection test:
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u003cbru003e 1 Swivel lock protection
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u003cbru003e 1.1 Several fan blades are connected together and fixed to restrict their rotation. If the fan and electronic components are not damaged, the fan can automatically restart the rotation if the components that restrict the rotation are loosened.
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u003cbru003e 1.2 For low-current or self-starting fans, the fan blades will be locked in the power-on rotation state. After 72 hours, the locked fan blades will be released and the fan will automatically restart immediately to prove that the fan is normal.
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u003cbru003e 1.3 Fans with high current or without self-start function cannot be locked for a long time, otherwise the fan will be overheated and damaged.
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u003cbru003e 2 Polarity protection
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u003cbru003e Under normal voltage conditions, if the fan is powered on for 15 minutes by reversely connecting the power supply, and then reconnecting with the normal two poles after the power is off, all functions will be normal
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u003cbru003e 3. Free fall
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u003cbru003e The single body is dropped from a height of 600mm onto a 30mm thick wooden board. Any one and one corner of the 6 surfaces of the fan can withstand the drop test, and it is confirmed that there is no damage.
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u003cbru003e 4. Insulation resistance
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u003cbru003e Under the condition of 500V direct current, the resistance between the outer frame and the positive pole of the wire is not less than 10MΩ.
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u003cbru003e 5. Insulation strength
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u003cbru003e Under the condition of 5mA leakage current and AC500V for 60 seconds, there is no abnormality between the fan frame and the wire, which proves that the insulation is good.
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u003cbru003e The cooling fans produced by our Tongchi Automobile will undergo rigorous testing after the production is completed. Only the cooling fans with no problems will be sent to the customers, and the quality is guaranteed. Tongchi Automobile is a cooling fan manufacturer integrating production and sales, focusing on Ru0026D and production of cooling fans, axial fans, centrifugal fans, blowers, DC cooling fans, and AC cooling fans; and has its own brand of fans, jentech fans can provide you Professional cooling system solutions, welcome your understanding and consultation.
