1. Frame: Visual Axial Fan can not have deformation defects, serious shrinkage, burrs and surface oil, etc. .

2. WIRING: Visual Axial Fan can not be damaged, terminal off, line length, line skin serious burns.

3. Other: No obvious visual appearance and visual raw material specifications and models are correct. 

4. Frame Aperture / line length: Use Caliper to confirm whether the frame aperture is consistent, use steel ruler to confirm whether the frame line length is up to standard. 

5. PULL GAP: hand-pulled Fan Blade will not fall off and gap is normal, fan blade toward the top of the lower hand can completely absorb no floating gap. 

6. Dial Pole: Fan Blade concave point stop at a pole, power-on can start, then dial the fan blade to the next pole power-on retest can also start. 

7. Current: After electrifying, put axial fan to confirm whether the current is in the specification. 

8. Speed: After electrification, put axial fan to confirm whether the speed is over the standard, feel the normal air volume and the direction of the air meet the specifications. 9.WAVEFORM: Computer Pass, visual confirmation current and signal wave frequency band and cycle normal 

10. Super-frame: left-hand frame, in the glass side from bottom to bottom curettage, and then rotate 90 degrees retest again, test speed waveform is good, Fan Blade hit the glass or stop moving fan blade out of the box, that is bad 

11. Abnormal sound: the Fan Blade is turned down at a steady speed until the frame is upright and the fan blade is turned up. The distance of hearing test is 8 ~ 12 cm below 5 cm 5 CM) above 12 ~ 20 cm 

12. Feel Test: Middle Finger and thumb guide holding frame, light rotation axial fan or horizontal vertical 45, feel vibration degree judgment: Vibration Judgment According to vibration sample; Test Axial Fan feel: Axial Fan operation can not have beat feeling 

13. Lock power off: Power on, hand pressure Fan, make it stop at a pole, a few seconds after the current value on the display screen should be zero, a few seconds after the automatic power on, and can read the current value, otherwise judged as defective. 

14. VOLTAGE WITHSTAND TEST: REFER TO VOLTAGE WITHSTAND TESTER SIP for testing. (Note: This test item is limited to 48 V or above aluminum frame axial Fan)

15. Other functions: according to the Axial Fan finished specification confirmation function: Lock Machine Power off protection, FG / RD, PWM speed regulation, soft start, waterproof grade, etc.

http://www.dxymotors.com