Learn about the instructions for the use of the negative pressure fan, so that you can make better use of this equipment. 

1. After installation, you need to test the machine. To observe the forward reversal, reversal, and whether it is working properly, whether there is any noise that should not be made. 

2. turn on the fan in the trial run or in use, if the fan can not start, the switch should be separated quickly, usually the lack of phase of the power supply caused by the circuit and power supply, if the switch is not separated, the motor will be burnt out of phase. Try the machine again after the circuit has been repaired. 

3.check whether the blinds are opened and closed smoothly. Keep the blinds clean, clean the blinds regularly, and stop the operation of the fan when cleaning to ensure safety. The ventilation effect of the shutters that have not been cleaned for a long time is affected by the excessive adhesion of dust. 

4.in use, it is necessary to clean up the sundries around the negative pressure fan in time, such as hair and waste plastic bags, etc., if not cleaned in time, these things will directly damage the negative pressure fan after being rolled into the equipment.