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Zone36's avatar

What are they doing when they check my fire alarm?

Asked by Zone36 (408 points ) February 2nd, 2010

So a few months ago the maintenance guy at my apartment came to check what I believe is what fire detector.

He had a long pole with something like a bowl that fit over what detector. What is it exactly and what is it doing?

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1 Answer

grumpyfish's avatar

I would guess he had something like this: http://www.hoyles.com/acatalog/solo-detector-testers.html (about ¼ the way down the page)

The detector was probably a CO-type detector, so he had to actually saturate the detector with CO (sprayed inside the bowl) rather than just mist the detector. Ones that detect particulates can just be sprayed with an aerosol to test, but if it’s detecting a gas concentration you need a little more.

It’s a bit higher-quality test than just pushing the test button.

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