Search found 831 matches

by Retired STR-SG
Mon Sep 16, 2019 8:01 pm
Forum: Fire Alarm Help
Topic: ADDRESSABLE FACP
Replies: 1
Views: 29

Re: ADDRESSABLE FACP

I had to research the specification terms you are asking about. 2ooN logic seems to be the equal of cross zoning of multiple detectors. I cannot speak about any/all addressable fire alarm systems, only the Simplex systems I worked on for many years. In the case of Simplex systems using programmable ...
by Retired STR-SG
Mon Sep 02, 2019 5:08 pm
Forum: Fire Alarm General Discussion
Topic: Do elevator cars ever have smoke detectors or sprinklers inside them?
Replies: 6
Views: 134

Re: Do elevator cars ever have smoke detectors or sprinklers inside them?

In 40 years of working in the fire alarm industry I have never installed a smoke detector in an elevator cab. In low rise buildings using horns and strobes I never installed those in elevator cabs. In high rise applications requiring a voice communication fire alarm system speakers and fire fighter ...
by Retired STR-SG
Tue Aug 20, 2019 5:26 pm
Forum: Fire Alarm General Discussion
Topic: Elevators at stores in a local mall don't have smoke detectors by them.
Replies: 5
Views: 152

Re: Elevators at stores in a local mall don't have smoke detectors by them.

The 25 ft travel criterion was dropped from ASME A17.1b, 1992 supplement, so the Firefighters’ Service Recall then applied to all automatic non-designated attendant elevators regardless of the travel distance. What is the elevator travel distance in the J C Penny? The document I am getting this info...
by Retired STR-SG
Tue Aug 20, 2019 10:47 am
Forum: Fire Alarm General Discussion
Topic: Elevators at stores in a local mall don't have smoke detectors by them.
Replies: 5
Views: 152

Re: Elevators at stores in a local mall don't have smoke detectors by them.

I found documentation that traces the evolution of elevator and fire alarm interfacing. The American Society of Mechanical Engineers added elevator recall to the mechanical code in 1973. At that time recall only was required for elevators with a travel distance of 25 feet above or below the designat...
by Retired STR-SG
Thu Aug 15, 2019 7:14 pm
Forum: Fire Alarm General Discussion
Topic: What rare devices do you have?
Replies: 14
Views: 443

Re: What rare devices do you have?

IBM also made fire alarms??? Fire alarm systems were part of the Time Recording Division of International Business Machines. In 1958 Simplex Time Recorder Co. purchased the time recording division from IBM to increase STR's share of the time clock market. The fire alarm systems were included in tha...
by Retired STR-SG
Fri Aug 09, 2019 12:58 pm
Forum: The Suggestion Box
Topic: Not Getting Emails From TFP
Replies: 1
Views: 327

Re: Not Getting Emails From TFP

I am not receiving email notification of PMs. I checked my preferences and that is turned on with the correct address.
by Retired STR-SG
Mon Aug 05, 2019 1:15 pm
Forum: Fire Alarm General Discussion
Topic: NYC stripe on pull stations?
Replies: 6
Views: 169

Re: NYC stripe on pull stations?

This got me curious so i did some research. I found two items on line that say the white stripe denotes pull stations that activate an automatic notification to the fire department. The second article indicates the white stripe requirement was dropped in recent years. - - - - LOCAL LAWS OF THE CITY ...
by Retired STR-SG
Sat Jul 20, 2019 2:45 pm
Forum: Fire Alarm General Discussion
Topic: Fire, Lockdown, Severe Weather, Tornado, Shelter-in-Place, and other Emergency Drills for the 2019-2020 Academic Year
Replies: 37
Views: 1167

Re: Fire, Lockdown, Severe Weather, Tornado, Shelter-in-Place, and other Emergency Drills for the 2019-2020 Academic Yea

fierlarmz_09 wrote:
Sat Jul 20, 2019 3:21 am
And what does the "+'" the "-" mean?
I can't find a "+" in any of the previous posts, including mine.
My post references K - 12 which is part of the URL for the county school system, Kindergarten through 12th grade.
by Retired STR-SG
Wed Jul 10, 2019 8:09 am
Forum: Fire Alarm General Discussion
Topic: Fire Alarm Related tech question
Replies: 1
Views: 117

Re: Fire Alarm Related tech question

That door chime has a manual push button input which could be operated by a relay in the fire alarm system. Not sure why that would be desirable though. If the chime is connected to a people counter those use infrared sensors. Many years ago I saw the fire alarm strobe in a restroom turn the water o...
by Retired STR-SG
Sat Jul 06, 2019 5:27 pm
Forum: Fire Alarm Help
Topic: Simplex 4008 IDNet Issues
Replies: 7
Views: 248

Re: Simplex 4008 IDNet Issues

The IDNet communication to the devices normally operates from the B+ and B- terminals. The A+ and A- connection monitors the voltage on the return side of the loop. The voltage on the A terminals is compared with the circuit source voltage. If the voltage across the A+ and A- terminals falls to a ce...
by Retired STR-SG
Fri Jul 05, 2019 5:42 pm
Forum: Fire Alarm Help
Topic: Simplex 4008 IDNet Issues
Replies: 7
Views: 248

Re: Simplex 4008 IDNet Issues

You should start splitting off wiring runs to see if there is one that resolves the problem. Then troubleshoot that run. I would start with the run going outside. If the system runs normally then that is where the problem is. If it comes down to any connected run still brings up the failure then the...
by Retired STR-SG
Fri Jul 05, 2019 5:22 pm
Forum: Fire Alarm Help
Topic: Simplex 4008 IDNet Issues
Replies: 7
Views: 248

Re: Simplex 4008 IDNet Issues

That outside wiring brings up another question. Did this issue start sometime after thunderstorm activity nearby? Is there suppression installed on the wiring going outside? Is the shield on the outside wiring connected to a good earth ground where the wiring leaves the end closest to the panel? Wha...
by Retired STR-SG
Fri Jul 05, 2019 5:16 pm
Forum: General Discussion
Topic: Going on a vacation
Replies: 7
Views: 268

Re: Going on a vacation

I flew many many times in the 10 years I was in tech support and never had a close call. Don't worry, be happy.

However:
by Retired STR-SG
Fri Jul 05, 2019 4:59 pm
Forum: Fire Alarm Help
Topic: Simplex 4008 IDNet Issues
Replies: 7
Views: 248

Re: Simplex 4008 IDNet Issues

The only similar situation I saw similar to this was on an original style 4010. Turned out replacing a smoke sensor that had gotten wet from a leak AND the cable going to it fixed the issue. Remember that an ohmmeter only places 0.4 volts across the circuit and the panel puts 28 volts across the IDN...