Re: UK Wall dimmer reliability

["Mike Dalgleish" <md@xxxxxxx>]

Hey guys, time to go home!

Mike

> -----Original Message-----
> From: Keith Doxey [mailto:keith.doxey@xxxxxxx]
> Sent: 19 July 1999 16:30
> To: 'ukha_d@xxxxxxx'
> Subject: [ukha_d] Re: UK Wall dimmer reliability
>
>
> Hi Tim,
>
> When did you install them.
> Dont forget we it is now summer and ambient temperatures have risen.
>
> They could have been on the verge of failing when the weather was
cooler
> and the few degrees rise has tipped them over the edge.....in which
case
> expect the 4th one to fail during August !!!
>
> Keith
>
> Keith Doxey
> http://www.btinternet.com/~krazy.keith
> Krazy Keith's World of DIY Home Automation
>
> -----Original Message-----
> From:	Timothy Morris [SMTP:timmorris@xxxxxxx]
> Sent:	Monday, July 19, 1999 3:12 PM
> To:	ukha_d@xxxxxxx
> Subject:	[ukha_d] Re: UK Wall dimmer reliability
>
> The interesting thing is, that for the first week of operation all of
them
> worked fine. I have one controlling 200W that has failed, but another
> which is controlling 300W which is (at the moment) working fine. I
wonder
> whether the heat is affecting the soldering on the board. Although I'm
> happy working on the low-voltage side of things, I dont trust myself
to
> work on the mains side, so I haven't opened them up. The suggestion of
a
> Din rail dimmer seems to be the solution, does anyone have one that is
> accessible so the can provide accurate measurements?
>
> I also have a particularly un reliable universal module - seems like
> manufacturing tolerance is not what it could be.
>
> Tim.
>
> -----Original Message-----
> From: Keith Doxey [mailto:keith.doxey@xxxxxxx]
> Sent: 19 July 1999 12:20
> To: 'ukha_d@xxxxxxx'
> Subject: [ukha_d] Re: UK Wall dimmer reliability
>
>
> Hi Tim,
>
> I would imagine that the poor little X10 chip inside the switch is
getting
> cooked so much by the heat coming from the triac that it just stops
> responding. Once cooled it will work OK until the next time.
>
> I personally dont like running ANYTHING at 100% load. Its much better
to
> have a good safety margin.
> If I want 500W of lighting I use a 1kW dimmer.
> If I want 50 watts of audio playing I use a 200W amp with speakers
rated
> at
> 3-400W
>
>
>
>
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