Testing smoke alarm circuit

[p11jor]

Hi all, does anyone test there smoke alarm circuit, just first fixed a full rewire so have put the interlinked smokes in....just having another confused moment about this!

 

[1shortcircuit]

Of course but don't IR test with the smokes connected obviously. Treat it as any other circuit

 

[Sintra]

Do you mean a functional or an electrical test.

 

[p11jor]

Could I ir them at 250 and just hold for 1min on tester?

 

[p11jor]

Just in general....shedule of results.....getting abit confused with using the 3core

 

[topquark]

Just in general....shedule of results.....getting abit confused with using the 3core

Coz there's no test as such for the signal cable?

 

[topquark]

It's still a conductor at the end of the day so do a continuity test.

 

[Jabbajaws]

Surely for a functional test, activating one of the alarms by using let's say lighting a match underneath and blowing it out will activate the detector. Then it's a case of making sure that all the alarms are audible at the same time...

 

[p11jor]

Yer I would be doing a continuity test, the ir tho would just shoot the 500 down the line and neutral so the three core one conductor would miss out......would I go to the first smoke disconnect the three core and start another from there between all three and the cpc? I am well confused,

 

[topquark]

Yer I would be doing a continuity test, the ir tho would just shoot the 500 down the line and neutral so the three core one conductor would miss out......would I go to the first smoke disconnect the three core and start another from there between all three and the cpc? I am well confused,

Smokes are sensitive, you sure you wanna make them swallow 500V ????

 

[p11jor]

Ignore me I am being thick here......!

 

[p11jor]

No no I would do the 250 trick

 

[topquark]

End to end continuity for each of the conductors (including the extra signal cable). Then you have some options to test for IR. You can do LN->E and LS->E for example.

 

[1shortcircuit]

Remove smokes and replace with connector blocks so that the entire circuit is complete and stick the 500 V's up it .

IR all conductors Live Neutral, Live CPC, Live Switched Live (signal) Etc etc etc

As for functional testing, use the test button and there is such a thing that you can purchase from the wholesalers called "A can of smoke" I thought I was having my leg pulled when it was first mentioned but it is true

 

[topquark]

Remove smokes and replace with connector blocks so that the entire circuit is complete and stick the 500 V's up it .

IR all conductors Live Neutral, Live CPC, Live Switched Live (signal) Etc etc etc

As for functional testing, use the test button and there is such a thing that you can purchase from the wholesalers called "A can of smoke" I thought I was having my leg pulled when it was first mentioned but it is true

Much better option to use the connector blocks!