Shake the bottle. 

Fit the supplied pipe to the nozzle. 

By holding the bottle vertically, direct the pipe at the place from where the dust is to be removed and press the nozzle. The gas from the bottle removes the dust settled on the surface.

Do not use to clean devices under operation or in the vicinity of ignition sources.
If the material is sprayed into a closed device, aerate it for 5-10 minutes before switching on.
Do not tilt the bottle more than 60°, as the filler material may be released in liquid form.