Friedland door bell and transformer

[AP77]

My friedland door bell, powered by a transformer in my consumer unit has stopped working. The transformer used to hum but now no sound. I'm waiting for an electrician to test.

The door bell unit has space for batteries. Can I use batteries and leave the transformer out of the loop?

I have tried connecting one of the twin wires to connection points 0 and 1 but no joy. Also tried the same with the other twin wire.

I am assuming that if I want to use batteries only, then the wiring would need to come directly from the bell push and not go via the transformer. Is that correct?

Thanks.

 

[jj4091]

Find your model and associated wiring instructions here

Untitled

 

[AP77]

Thanks. The link just seems to take me to an advert.

I guess my question is can I use batteries if the wiring comes via a transformer?

 

[ericmark]

Yes, can use batteries, but you need to work out which wires are which. You have two cables, one from the bell-push, the other from the transformer, both look the same. So one pair of wires will no longer be used, and the other pair go to 0 and 1. The 2 and 3 terminals have no external wires to them when using batteries.

@jj4091 your link is to a selection page for electrical supplies, and is not helpful.

 

[ericmark]

I guess my question is can I use batteries if the wiring comes via a transformer?

The question is can you work out which pair goes to the door push.

 

[ericmark]

The 0 terminal is at the moment used to link the door push to the transformer, and either 2 or 3 goes to the door push and the other goes to transformer, and it does not matter which way around, so nothing to identify which pair is which.

 

[jj4091]

deleted

 

[jj4091]

Yes, can use batteries, but you need to work out which wires are which. You have two cables, one from the bell-push, the other from the transformer, both look the same. So one pair of wires will no longer be used, and the other pair go to 0 and 1. The 2 and 3 terminals have no external wires to them when using batteries.

@jj4091 your link is to a selection page for electrical supplies, and is not helpful.

Did you click on follow the link for TLC

 

[jj4091]

@jj4091 your link is to a selection page for electrical supplies, and is not helpful.

The TLC one should be helpful

 

[AP77]

That is really helpful, thanks very much.

I have just tried connecting one pair to 0 and 1 (left the other pair unconnected) and then tried the other pair to 0 and 1. I guess the second pair must be from the bell pusher because the bell chimed a few times when I was wiring up.

Unfortunately though the bell pusher on the front door still does not make the bell ring.

Very confused!

Here is the second pair (from the door bell wire I guess).

Any help greatly appreciated.

 

[Harry Bloomfield]

Thanks. The link just seems to take me to an advert.

And on that page, it lists the various models. Click the one (though are all fairly similar), which matches the model of bell/sounder you have.

That particular chime, supports two bell pushes, each giving a different chime. Ding, and ding-dong, so you know which has been pressed.

 

[AP77]

Oh my goodness!!! I have just tried to connect the pair that I thought was from the transformer to 0 and 1 again and the bell now works!!!

We have been quite a while without a bell!

Amazing, so grateful to the replies and help. THANKS!

 

[ericmark]

That particular chime, supports two bell pushes, each giving a different chime. Ding, and ding-dong, so you know which has been pressed.

Since when? Pushing the button give ding releasing it gives dong. Spanner, a pair of snips, etc, between 0 and 1 should work it even with no wires. Once connected often springs need stretching or compressing, so the striker does not remain on either chime. But you should see plunger move when button pressed even if it does not chime, showing it is connected.

 

[ericmark]

Oh my goodness!!! I have just tried to connect the pair that I thought was from the transformer to 0 and 1 again and the bell now works!!!

Well there were only two options, glad it works.

 

[Harry Bloomfield]

Since when? Pushing the button give ding releasing it gives dong.

Since always. Drawn one way, by the DC polarity, there is no spring, so it doesn't fly back, so you just get a ding. Drawn the other way, by the opposit polarity, it is drawn against a spring, which fires it back when the button is released, and so you get the dual ding-dong.