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Old 03-12-2009 - Old Technology Systems - Fire Alarm Systems - Voltage Talk forum
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Info Old Technology Systems

A lot of newer technicians (some of mine, too) do not know that late 60's and early 70's fire alarm panels that use dry-cell batteries do not function the same way as newer panels. One of my techs wanted to replace an old panel which hadn't been serviced or inspected in several years because he said the trouble buzzer and light did not work anymore. I just sent him back and told him to replace the batteries.

On a lot of these older panels the dry-cell batteries are there ONLY to power the trouble buzzer and light. Dry-cell batteries do not provide enough current to power the notification circuits.

If you happen to run across one of these older systems, the very first thing you should do is replace the dry-cells before performing any other tests. Also, these batteries need to be replaced EVERY YEAR if not sooner.
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Old 03-12-2009 - Old Technology Systems - Fire Alarm Systems - Voltage Talk forum
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I would condemn it. Your advice is sound though.

Proceed to inform the customer of the unreliability of the system.
If this system is in a place occupied by the general public....Or a residence.
Stress it more!
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Old 03-13-2009 - Old Technology Systems - Fire Alarm Systems - Voltage Talk forum
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A lot of times it isn't as simple as just replacing the panel. These older panels used eol diode supervision instead of resistors on the notification circuits. A unit by unit buzzer search in a large apartment building in order to replace diodes and resistors runs up the labor cost quite a bit. If the customer wants to pay for a modern panel, I'll be glad to sell him one. That usually isn't the case however.
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Old 03-13-2009 - Old Technology Systems - Fire Alarm Systems - Voltage Talk forum
leland leland is offline
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I hear ya Sparky! Those old Pyro panels,got a bunch around here still.


Resister diode-resistor,either way it has to be found. If you repair it today and tomorrow it fails..... That's why paper work is soooooo very important. CYA.

Explain that to a young kid who just wants his/her 8.
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Old 03-16-2009 - Old Technology Systems - Fire Alarm Systems - Voltage Talk forum
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Was this a System 3? Those panels were great for when they were made.

and those "aluminum coffee mug" ion smoke... with the incandescent alarm indicators.
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Old 03-16-2009 - Old Technology Systems - Fire Alarm Systems - Voltage Talk forum
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Ames FireLock. Old-style relay logic system.
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Old 03-16-2009 - Old Technology Systems - Fire Alarm Systems - Voltage Talk forum
leland leland is offline
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Yes Will- the system 3 very sturdy panel.
And the old 'Fire-Tek' ancient crap. But great at the time.
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Old 03-17-2009 - Old Technology Systems - Fire Alarm Systems - Voltage Talk forum
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Cool Burglar and Fire Alarm History

Speaking of older systems... Check out these great pictures at www.waynealarm.com. Mr. Ralph W. Sevinor the President of Wayne Alarm Systems, Inc. in Lynn, Massachusetts has amassed a large collection of museum quality older Burglar and Fire alarm components and pictures. Really a great display showing the industry's history.

Mr. Sevinor sent to me an incredible power point presentation. I'll contract him and see if he will allow me to provide it to the viewers of this forum. It's really cool

Check out a few of the pictures on his web site: http://waynealarm.com/web/index.php?...=56&Itemid=185
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Old 03-17-2009 - Old Technology Systems - Fire Alarm Systems - Voltage Talk forum
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relay logic is the best...

Ive built an entire class A supervised fire system with 2 zones and 2 signal circuits... out of nothing but relays, resistors, and LEDs. I might be able to take a vid or maybe a circuit diagram of the project...
I did also build a short-lived Class B one.... it apparently accepted a 2K EOL (lucky first guess!) and worked fine. It even accepted some 2 wire smokes.
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