FFU Precautions and Maintenance

Precautions and maintenance:
　　For fans with abnormal indicator lights and external contact, you can check the cause of the abnormality, there is a green LED light showing the current motor operating gear. The abnormal indicator light (Alarm) is extinguished during normal operation, under a normal power supply, the fan does not run when the abnormal indicator light is. The following conditions may occur in the event of an abnormality: motor overload tripped off; motor coil burned out; internal wiring disconnected.
　　Replacement of pre-filter and main filter The pre-filter accumulates large dust particles and needs to be cleaned every 7-10 days. Please remove the frame and wash it with water before putting it back into use. When more dust accumulates in the main filter, the wind speed and airflow will be reduced. If the pressure loss of the filter screen increases to twice its original size, or if it does not reach the clean level, it needs to be replaced.
　　To make the fan filter unit give the best effect, please check each part in detail when installing, and do regular inspections at least 1-2 times a year.