Cautions:
1.Use  the unit at the rated voltage and frequency indicated on the nameplate.
2.Please  cleaning the fitter regularly, to avoid dust clogging reduce the air  speed.
3.Disconnect  power source before unit servicing.
4.Routine maintenance must be done every year.
5.Never use petrol, benzene, thinners or any other such chemical for  cleaning the unit.
6.Don’t allow water or any liquid to enter the motor.
7.When power supply comes from a socket, the plug must be in accordance  with IEC335-1.When the power cord is connected directly ,all polarity  switches that the contract gap is 3mm at least must installed in the  charging line.
8.In order to avoid injure, must changed the line of air curtain by  professional worker or factory when the line happened trouble.

FM-1509SA1 0.9m 110V Air Curtain with UL Certification