Sterling M and sick Allertor

[ver tum]

Sterling M:
http://youtube.com/watch?v=78riahOk2ig

Short video of a sick Allertor in Manitowoc County, WI:
http://youtube.com/watch?v=eMqtDjtZJk8

Here's an older, and longer video of that same sick Allertor.
http://youtube.com/watch?v=lIgNQxTUvtc

[murrfarms]

I still can't believe it's been over a year ago since that other video was made of the sick Allertor, and yet nothing has been done about it. It's just so sad whenever cities neglect their sirens so bad, to the point where they barely run any longer. And then they wonder why people are claiming they can't hear the siren...

[ver tum]

Manitowoc County has yet another sick Allertor, and I doubt that this one has been fixed either. This one is not as bad as the first one, but it's still sickly.
http://youtube.com/watch?v=FF410bQhJ8s

[murrfarms]

Ah, I thought there was another. Like I said, I just hate to see these sirens neglected like this, because what will happen when they really need to use them? Nobody will be able to hear them like they should. I think all they really need is a new set of brushes and a thorough cleaning of the communicator.

[ver tum]

I'd almost bet that that first Allertor isn't even as loud as a 2T22. It's pitch is seven semitones lower than it should be, which would make it's spead less than 2400 RPM's, which is only about two thirds of the spead that the rotor should be turning. It almost sounds like it's not getting enough power.

The second sick Allertor is sluggish at startup, and since it was sounding in Attack, I don't know if it would have ever reached full spead.

[murrfarms]

Yeah I know it, it's probably putting out around 110dB at most as slow as it's spinning. And I think you have a good point about it possibly not getting enough voltage. I wonder if it could have something to do with the collector ring underneath the motor? Could be bad slip rings or brushes in there too. On my irrigation systems, which also have a collector ring on top, that seems to happen a lot to them too as they get older.

[Spraynard]

I know this is kind of a late reply but I just registered. I actually took this siren apart at a motor shop I work at and what actually happened is it just burned up like hell. The copper bars within the rotor actually melted. The rings on the ends of the rotor that are actually supposed to be attached to each of those bars fell off and were just flying around nicking up the windings. It had to have gotten around 2,000 degrees or so in that motor to melt all that copper. The good news is that the siren has since been replaced with a T-128. Manitowoc is just slow at doing things but eventually, they get around to it.

[ver tum]

I thought that that low pitched Allertor was still up. That short video was just filmed recently. When did the T-128 go up in it's place?

[Spraynard]

The guy that filmed it last probably shot one if it's last weekly tests. We got in the shop around the end of April. We actually just got another one in about a week ago with the same problem, so they'll probably be replacing that one soon too.

[ver tum]

The guy that filmed it last probably shot one if it's last weekly tests. We got in the shop around the end of April. We actually just got another one in about a week ago with the same problem, so they'll probably be replacing that one soon too.

I'm glad that the problem has been taken care of. I don't see how that Allertor even ran if it was burnt up that bad. I thought that Manitowoc County wasn't going to replace it though, because of what the guy said in the comments for the video.