Many industries need to use DC fans, a company's incoming inspection standard do you know what? To standardize the inspection standard and method of DC fan can make the inspector clear the items to be inspected, the basic knowledge of Fan, do a good job in the control of incoming materials, prevent the use of non-conforming products on-line, and improve the quality of incoming materials. Our internal standards are the specifications issued by the project, the finished product inspection specifications, as well as the original sealed sample 1, the appearance of the mark: The outer packaging is not broken place, to see whether the surface is scratched, there is no dirt, whether flat, the mark is clear and correct. 2, Size: whether consistent with the drawings 3, DC FAN POLARITY: power line color is correct, connecting terminal positive and negative polarity can not be installed in reverse. 4. Performance: smooth running, no obvious vibration, stagnation, and abnormal noise. 5, HIGH AND LOW VOLTAGE OPERATION: Power 0.85 times the rated voltage, click to normal operation, motor operation without vibration. 6. Speed: Speed and speed meet the requirements of the drawing. Power: Requirements for power service drawings. 8. Life Test: rated voltage, 300 hours of normal operation with standard load. 9. Heating up: After stable operation, heating up ≤75K10. Salt Spray Test: There can not be indelible corrosion after 24h salt spray test of metal shell.

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