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Junior Member
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Jul 26, 2009, 05:14 AM
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Nutone Door Chime
Hi,
I was given an old Nutone 4 Chime that has stopped working - just a low hum and slight movement of the coils.
There is NO model number on the chime, only the Nutone name.
Does anyone have any information on this chime? Looking for a wiring diagram and or parts list.
This model has a motor that rotates a pin that makes the contacts that go to the coil chimes.
I have cleaned the coils and contacts and have gotten a little movement from the coils.
Yes, I have written to Nutone but...
Here's a couple of pictures.
Thanks
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Uber Member
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Jul 26, 2009, 07:03 AM
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What does it say in top corner(Model#?).
I would see what the voltage on motor is. Maybe 120 volts? Then the coils would likely be 120 volts as well, looks like it plays 8 0r 9 notes or there is a pause, can't see under the arm. I see 4 terminals, 2 are likely power and 2 are likely doorbell button, maybe a pull switch on side for on/off.
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Junior Member
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Jul 26, 2009, 07:35 AM
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Hello,
The label you ask about only says "Nutone - Cin. Ohio", NO model number. This is a 16 volt chime, at least that's what I measured from the transformer in the house it came out of.
I suppose the 16 volts could possibly be a 24 Volt transformer with a problem but I doubt it.
As seen in the picture, there is a small lamp in the front of the chime housing controlled by a switch on the side.
I realize that two of the terminals are for the 16 V xformer and would expect the others to be the Front and Rear bell pushbutton.
I did hook up the 16V and tried it and got the light to light and the coils to move slightly
Thanks
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Junior Member
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Jul 26, 2009, 08:09 AM
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Hi,
Yes, there are 4 brass tubes with this chime. One is shown in my picture.
Thanks for the links.
I am thinking that the small motor is the heart of the problem.
Thank you
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Uber Member
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Jul 26, 2009, 08:18 AM
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Good Luck, a phone call to one of these links may provide parts and info.
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Junior Member
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Jul 26, 2009, 08:24 AM
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Hi,
I'll need it..
Thanks again
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Uber Member
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Aug 6, 2009, 04:20 AM
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Did you get it going?
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Junior Member
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Aug 6, 2009, 04:32 AM
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Hi,
Yes, I did. After reading the links you sent me I took the solenoids out of the coils and
Buffed them clean.
I also cleaned the inside of the coils when the solenoids were out.
I needed to clean all the contacts etc.
I'll have to build a small housing to hold the "Works" as the previous owner broke the
Case and threw it away.
By the way, I sent the pictures to Nutone ant they tried to help but couldn't identify the unit. They did send me an address of a repair shop near me.
I just got it going yesterday.
Thanks again
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Uber Member
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Aug 6, 2009, 05:03 AM
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Good deal, Does it play 8 notes with a pause in the middle?
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Junior Member
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Aug 6, 2009, 05:18 AM
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Hi,
Yes it does. I did learn NOT to tighten the small set screw too tight that holds the contact
Pointer on the motor arm that turns for the chimes.
When I did tighten the small flat screw driver slot too much, one side broke off!
Luckily, I found a 6/32 hex in "Ace" hardware yesterday that worked. I first thought
I would have to re-tap the small pointer to get one to fit and I didn't like that idea.
Thanks
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Uber Member
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Aug 6, 2009, 05:21 AM
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Good deal.
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Junior Member
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Aug 6, 2009, 05:28 AM
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Hi,
By the way, one other problem I had was it didn't want to play all 8 notes, it would
Skip two of them at times. However, if I shorted the contacts with a jumper wire
All notes played fine, thus I knew it wasn't the coils or solenoids.
I removed the pointer contact arm (center of front picture) and cleaned it again.
I noticed that the contact part has a small bump on it that contacts the circular stationary
Contacts as it is rotated.
This "Bump" had a worn spot on it that I think didn't make a good contact.
I cleaned the bump, again and dropped a small amount of solder on the bump and now it
Plays fine.
This all happened yesterday!
Thanks
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Uber Member
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Aug 6, 2009, 05:29 AM
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What tune does it play?
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Junior Member
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Aug 6, 2009, 05:31 AM
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Good question? I'll have to LISTEN!!
Going to the Doctor, back later
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Uber Member
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Aug 6, 2009, 05:32 AM
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Good Luck. Take Care
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New Member
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Feb 6, 2011, 11:43 AM
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There's a couple of other sources:
This guy is mostly into clocks, but many Nutone and other old chimes used the same Telechron motors and coils:
http://www.atmos-man.com/rotor.html
Here's another guy that repairs Telechron motors:
http://www.allgoodtime.com/rotor.html
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