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Discussion of Outdoor Warning Systems
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PostPosted: Tue Jul 31, 2018 9:27 pm 
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Real Name: Alexis Trinquet
Location: Gouvieux (department of Oise), Hauts-de-France (formerly Picardie)
Perhaps this unit had it's motor replaced or possibly a early revision.

Eithier way if this is an model AX, it is indeed a older one.

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PostPosted: Mon Oct 08, 2018 2:29 pm 
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so the X represents explosion proof? makes sense. how did they do that without removing the brushes?
so an explosion proof model L would be an LX?

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PostPosted: Tue Oct 09, 2018 10:29 pm 
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As far as other versions of the 'X' subseries, the only one that hits my head is the RX, which was basically an old-style Model L with a cover over the intake. I'm not sure if the motor was different, and I couldn't find any pictures that weren't dead-end links or unknown, but that's what I remember.

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PostPosted: Wed Oct 10, 2018 6:31 pm 
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Must've been because of debris that would get inside the rotor, scraping against and possibly creating sparks.. Just a shot in the dark as I have no idea if the Model RX (rumor has it, the RX was a coded L not a explosion-proof one) was just a coded L or not.

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PostPosted: Sat Oct 13, 2018 6:19 am 
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well, even a clean brushed motor will spark slightly as the brushes are always being worn down. thats why vacuums have hepa filters. in addition to filtering out the fine dust, it has to filter out the carbon particles.
on a side note, 3 phase motors are all explosion proof.
(Brushless) (BLDC/BLAC)

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PostPosted: Sat Oct 13, 2018 1:56 pm 
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Why was this siren in a mansion?


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PostPosted: Sat Oct 13, 2018 3:06 pm 
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Real Name: Alexis Trinquet
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Model L wrote: *
well, even a clean brushed motor will spark slightly as the brushes are always being worn down. thats why vacuums have hepa filters. in addition to filtering out the fine dust, it has to filter out the carbon particles.
on a side note, 3 phase motors are all explosion proof.
(Brushless) (BLDC/BLAC)
Brushless motors do exist, but...

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PostPosted: Sun Oct 14, 2018 10:39 pm 
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was the motor in this siren brushless?

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PostPosted: Mon Oct 15, 2018 3:19 pm 
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Darley Champion wrote: *
Must've been because of debris that would get inside the rotor, scraping against and possibly creating sparks.. Just a shot in the dark as I have no idea if the Model RX (rumor has it, the RX was a coded L not a explosion-proof one) was just a coded L or not.
IIRC Noie owns an RX, so he should bring up if that's true, but Federal made the Model PL/PD that had an elongated intake to fit a flapper mechanism used on the Pulsator series. There was also the JC that was (supposedly) a Model A/J inside a large conical housing with an extra electric input for a damper; there was a short video of one on YouTube, but it must have been taken down

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