kalexv12

Does anyone have experience with mircom addressable fire alarm panel series FX-350 they seem to get alarms at all times of the day, but nothing was touched. They get pull station alarms, heat detector alarms, and flow switch alarms. The wiring all checks out with no problems.

kalexv12

It the first time installing this series. We installed them in four buildings, and never have we had so many call backs it's getting annoying.

Rick567

I had a problem with a faraday panel one time where it would go into trouble then reset it self but not without the costumer getting a call, this was happening at all hours no set pattern. Also we had nothing wrong in the circuits. What it ended up being was a problem in the control panel, the circuit could not handle any load at all, as soon as we put one smoke on the panel there would be trouble, not right off but later that night. Faraday ended up changing a card out to fix it.

Lone Crapshooter

What type of alarms on the circuits ? Water flow more than likely not enough differential across the alarm check . With that condition disturbances in the fire main exterior to the building will cause nuisance alarms.

If the alarms are on smoke detector circuits and the building is not that clean look for bugs in the detectors.

How long has the system been in service ? When I worked for the alarm company we would wait at least a week for burn in time on a large system.

Just 2 things to look for . Really need more information to be of any more help.

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kalexv12

It seems to be anything that's on them addressable modules like flow, tamper,low air, and heat detectors we had to put in in heated areas. We finished them buildings in the winter and people moved in to them in the spring.

Lone Crapshooter

I must swallow my pride and tell you that have very little experience with addressable systems. But what I was referring to was common problems that could happen with any system . I did work 5 years for a Pyrotronics (now Siemens) / Notifier distributor in the mid 70's to early 80's.
I still am perty good field wiring troubleshooting of conventional systems.

LC

__________________
Electrician licensing without continuing education is just another form of TAXATION

NacBooster29

I install a few mircom adressable panels a yr. usually pretty large systems too. Never really any issues. If you have a gnd fault that is lingering in the slc loop you will have the exact issues you describe. use a good multi meter to confirm this, not just a continuity meter.Another issue we have had is pvc coated, low -e type cable used with metal boxes , usually have some kind of trouble with the box scraping the insulation back. Personaly I'd triple check your slc loop or loops for a gnd fault. Also check your ohms through your loops if i remember correctly the maximum allowable per loop is in the neighberhood of 38 ohms resistance start to finish.

kalexv12

I read the resistor consistently through the entire loop back to the panel. Also this panel will read ground faults in the panel if there is any.

FIRETECH

We have several FX-350's installed. We've had problems with the MIX-100X (SLC Isolator) not working correctly right out of the box. All the devices you've listed here are "contact type". You haven't detailed whether they're conventional heats and pulls or the MIX-3300 and MIX-401ID (addressable heat and pull respectively). If they're all conventional devices, check to make sure you have the correct end-of-line installed. Also make sure the #8 dip switch on the input module is set correctly ("A" or "B") for how you've wired it.

Frank