Why does my fire extinguisher hose or nozzle look blocked?

If the hose or nozzle looks blocked, do not try to poke, dismantle or force it clear. These extinguishers are supplied for fire use only, and the manuals say not to change anything on the unit or remove parts. fileciteturn0file3turn0file4

1. Check the outside of the nozzle or hose for dust, packing residue or visible dents. Expected result: the outlet should look clean and open.
2. Make sure the extinguisher is not partly discharged or leaking powder around the outlet. Expected result: there should be no obvious residue near the nozzle.
3. Confirm that the hose, if fitted, is attached properly and not kinked. Expected result: it should lie naturally without sharp bends.
4. Stop using the extinguisher if the outlet remains obstructed, if the hose is damaged, or if you cannot confirm it would spray correctly in an emergency. Do not insert tools or attempt an internal repair. fileciteturn0file3turn0file4
5. Contact the retailer or store where you bought it and explain that the outlet appears blocked.

Keeping the extinguisher clean and on its bracket helps reduce dust build-up, but any suspected blockage should be treated as a safety concern rather than a cleaning problem.