Fans have a good condition

Look after the operation and speed performance is energized to rotate toggle switch back and forth a few times, check whether the failure or tight fitting, in this process, the fan mechanical transmission parts should not have abnormal noise. industrial electric fans in high, medium and low speed, the motor and blades should be smooth, low vibration, low noise. oscillating stand fan shook his head, shut down should be agile, non-stop, arrest and jitter, the speed difference of each block should be obvious, air angle bigger the better. When the fan stops, the shaft axial clearance is not more than 0.5 cm, the gap is too big, it will cause axial movement and there is a crash during the operation.

After watching for leaks fan powered hand touch if there is a strong hemp inductance, with test pencil test, test pencil will light emitting display, can determine the shell leakage, can not choose.