atcomsystems.ca/forum Forums General General Telephone & Systems Information Troubleshooting a Siren

I'm with ya Skip, I'm guessing that is a relay that trips on the ring voltage and then the siren sounds.

1. Siren could be bad and should be a way to short the power to it to test.
2. Usually those sirens/buzzers are powered so is it getting power?
3. is the relay working on the wheelock? if that is what he is using.

Hey All; I'm going to try to better explain. There are two analog ports that run thru two relays, thru an emergency alert device; then thru an old Mitel Dialer then to paging system. When the customer dials ICM 335, it's supposed to activate the evacuation whoop on the emergency evac. device which in turn sends whoop to paging amp and telephone system so the evac. whoop is heard on both the phones and external paging. Keep in mind, the installer of this is long ago retired. I don't know if this helps or hinders.

How old is the siren? Is it a clarkson?

Ok, lets take this a step at a time. There are two "paths" here. First, as I said above:

1) Coil of relay #1 is on extension 335.

2) When 335 rings relay # 1 pulls in, dry contacts trigger Wheelock tone generator programmed to produce a whoop tone.

3) The audio output of the tone generator is connected to the PA system amp input.

Forgeting the other relay (#2), the dialer and the phones for the moment:

1) Is the wheelock getting power? Usually 24VAC.

2) Are you getting an output on the Wheelock tone generator? (Yes, because I believe you said you checked it with your buttset.)You can jump or short the trigger input while cliping your buttset to the output to see if the generator works.

Now you are going to have to trace the wiring from the output of the tone generator to see how it is connected.

1) Does the dialer get triggered be relay #2 which also has it's coil on extension 335? When 335 rings it triggers the dialer which dials an "all page" group which has all extensions in it.

2) Somehow the audio output of the tone generator is split between the paging amp and the dialer T&R.


Another possible scenerio is that the "all page" group includes overhead page through the phone system page port. In that case the audio output of the tone generator would only need to go to the dialer T&R. The paging system input is fed from the page port.

So:

1) Check the tone generator.

2) Check the dialer.

3) Check the paging system.

-Hal

My money's on the overhead paging system.

Take a 105A ring generator for test if you have one.

First and last. We need to adress the analog port of the switch or ata device.

Everyone jumps to a problem solver and often to fast to fix it. Beware

I have no indication of the PBX size or manufacture.

Somehow the audio output of the tone generator is split between the paging amp and the dialer T&R.


Is it valcom 24 or traditional 70v.

Mix is ok

Somehow the audio output of the tone generator is split between the paging amp and the dialer T&R.


It sounds like you have a Valcom

I can help.

Thanks To All; you guys are great help!! FYI....It ended up being the dialer. The dialer was the last step in the chain. The dialer was programmed to dial *10(all-page) to telephone system, which in turn broadcast the whoop across all telephones and paging speakers. I had to find an old Mitel manual and program another dialer to dial the appropriate digits. I'd like to update the equipment at some point and eliminate the dialer because programming those dialers is a pain in the you-know-what. A Viking DNA-510 comes to mind, but don't think it would do the all-pge dialing for me. Again Thany you all very much!!