Release level to stop
Since the picture is too far away and blurry, you’ll have to take my word for it that these are the steps for using this Downtown Line fire extinguisher:
- [pull out the pin, presumably]
- AIM AT BASE OF FIRE
- SQUEEZE LEVEL TO DISCHARGE
- RELEASE LEVEL TO STOP
(I’m pretty sure they meant “lever”.)
Hang on, I’ve got a slightly better photo:
Here’s the extinguisher in my lift lobby (which says “lever”):