Cooling Fan after the composition of the finished product is to be tested, then what are the methods of testing? The following small series to explain: 1, the frame: Visual deformation defects, serious shrinkage, burrs and surface oil, etc. . 2, Frame Aperture / Line: Use Caliper to confirm whether the frame aperture is consistent, use steel ruler to confirm whether the frame line length is up to the standard 3, Dial Pole: Cooling Fan Blade concave stop at a pole, electrify can start again along dial fan blade to next pole electrify retest also can start. 4, current: After power on, the vertical cooling fan to confirm whether the current is in the specification 5, after power on, the vertical cooling fan to confirm whether the speed is exceeded, feel the air flow is normal and the direction of the air flow conforms to the specification 6, waveform: After the computer determines PASS, visual confirmation current wave and signal frequency band and cycle are normal 7. ABNORMAL SOUND: Fan Blade downward at a steady speed upward rotation to the frame, FAN BLADE UPWARD, ear hearing judge abnormal sound ear test distance: 5 cm below 8 ~ 12 cm; 5 CM) above 12 ~ 20 cm 8, feel test: Middle Finger and thumb guide holding frame, gently turning fan or horizontal vertical 45, feel vibration degree judgement: Vibration judge according to vibration sample; Test Fan feel: Fan Blade operation can not have beat feeling 9, other functions: according to the specification confirmation function: Lock Machine Power off protection, FG / RD, PWM speed regulation, soft start, waterproof grade, etc.

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