More BROADMOOR ESCAPE SIRENS, both with faults! {{Beware: LOUD VIDEO!}}

Both sirens in this video have faults - one shutter is jammed open on the first siren, whilst the other siren has one that's jammed shut (or the solenoid isn't working to open it).

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https://www.youtube.com/playlist?list=PLaq77KzM3KRRw74FGg5HRlZhWOLl4SgLQ
(this video is SIREN E and SIREN M)
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ABOUT THE SIRENS:

Here are two sirens from a system containing 13. They are located in the neighbouring towns surrounding a secure hospital in the UK.
Me and Chay went out to find them all, which I may upload soon. It was a very interesting bank holiday Monday lol! Chay was a bit apprehensive while waiting for the first siren to sound, but loved it afterwards :)
He liked it enough to stay with me whilst tracked them all down.
It was a good day as we did other things like play football in the parks, McDonalds and see the sirens of course!

It was a mixed bag - some viewable from the street, some hidden so much that you'd never know they were there (unless it went off!), some in council depots, compounds, parks and believe it or not - in the middle of housing estates metres from houses! (would scare the living daylights out of residents if they went off at 3am!)
Some are in secure places with no access at all.

The sirens are tested at 10am each Monday.

I have recorded 6 of them in action (6x Monday@10am!) - in this video there are two of them (probably the best ones, as both shutters were working perfectly).

BY THE WAY - In reality all 13 sirens are tested together, but so that you can see each stage (start-up, running, running-down) of each siren, I have offset the sirens by two minutes (see the times in the bottom left and right in the video).
HOW THEY WORK:
The Klaxon CS8 siren.

A 415volt 3 phase motor spins two rotors on either side. One rotor is for the high tone and the other for the low tone (the one with most holes is the HIGH tone).
During the escape siren, the airflow is cut alternately to each rotor by a shutter on each end producing the distinctive high-low tones. I believe these are known as CODED SHUTTERS - hence the model name Klaxon "CS"8.

Both shutters are opened together for the all clear tone. You can just make out the high and low frequencies being produced together if you listen.

ENDING - Not sure what happened at the end of this video, but the "running down" ended about 10 seconds later.

MORE SIREN VIDEOS TO COME SOON...!

Видео More BROADMOOR ESCAPE SIRENS, both with faults! {{Beware: LOUD VIDEO!}} канала mrmattandmrchay