datadiffusion Posted August 25, 2015 Share Posted August 25, 2015 I don't think they make them any more (it was their only MC product) so I guess I wasn't the only one. So, I've decided to take my work back underground.... to stop it falling into the wrong hands Link to comment https://www.thesecurityinstaller.co.uk/community/topic/38987-double-balanced-door-contacts/page/2/#findComment-428222 Share on other sites More sharing options...
MrHappy Posted August 25, 2015 Share Posted August 25, 2015 I assume the reeds are all bought in & quite probably from a common source. Mr Veritas God Link to comment https://www.thesecurityinstaller.co.uk/community/topic/38987-double-balanced-door-contacts/page/2/#findComment-428223 Share on other sites More sharing options...
datadiffusion Posted August 25, 2015 Share Posted August 25, 2015 Well, I've heard that Knight use only EU or US made ones, I assume Elmdene buy 'locally' in China as they manufacture over there, and Ventcroft I can only guess must have bought a really sh1tty batch from god knows where. I have never had a door contact fail like that before, an RSD yes, although that wasn't welded shut that was random opening. So, I've decided to take my work back underground.... to stop it falling into the wrong hands Link to comment https://www.thesecurityinstaller.co.uk/community/topic/38987-double-balanced-door-contacts/page/2/#findComment-428224 Share on other sites More sharing options...
MrHappy Posted August 25, 2015 Share Posted August 25, 2015 IIRC Ademco was once a large supplier of glass reeds? I have experienced both Knight & CQR to fail, open, closed or spaz out.... I think graded contacts with pcb's are worse than resistors fitted into BS contacts for failing back in the golden age of DP when Arf was getting on the waiting list for a bus pass... You could measure the circuit during servicing & find failing contacts which going hi Ω, an extra 50Ω ain't never going show up on EOL Mr Veritas God Link to comment https://www.thesecurityinstaller.co.uk/community/topic/38987-double-balanced-door-contacts/page/2/#findComment-428226 Share on other sites More sharing options...
charlie6 Posted August 25, 2015 Share Posted August 25, 2015 Mr Happy, Arf is my nickname on this site and I've got a bus pass..never use it though..can't find any buses in my part of the world..horse and cart maybe, but very few buses.. I agree with you, at least there was a chance of finding the high value resistor. Is there anything in the regs that says we can't use a straight forward contact with our own (the panel) resistors ? Link to comment https://www.thesecurityinstaller.co.uk/community/topic/38987-double-balanced-door-contacts/page/2/#findComment-428229 Share on other sites More sharing options...
MrHappy Posted August 25, 2015 Share Posted August 25, 2015 Mr Happy, Arf is my nickname on this site No Arf is Arf, http://www.thesecurityinstaller.co.uk/community/user/7025-arfur-mo/ aka the "wonder of wickford" or something beginning with "w" I forget which... Your "Arf Lite" & it might not be a complement Mr Veritas God Link to comment https://www.thesecurityinstaller.co.uk/community/topic/38987-double-balanced-door-contacts/page/2/#findComment-428237 Share on other sites More sharing options...
charlie6 Posted August 25, 2015 Share Posted August 25, 2015 OK then, you can call me Arf Lite, or anything else for that matter. There shouldn't be anything in 'the regs' regarding eol's since resistors are still provided with panels (not all of them of course !!). Link to comment https://www.thesecurityinstaller.co.uk/community/topic/38987-double-balanced-door-contacts/page/2/#findComment-428241 Share on other sites More sharing options...
abbz Posted August 25, 2015 Share Posted August 25, 2015 I miss Arf ! Was always a good time killer when taking a dump ! Link to comment https://www.thesecurityinstaller.co.uk/community/topic/38987-double-balanced-door-contacts/page/2/#findComment-428243 Share on other sites More sharing options...
charlie6 Posted August 26, 2015 Share Posted August 26, 2015 Where is he now ? Link to comment https://www.thesecurityinstaller.co.uk/community/topic/38987-double-balanced-door-contacts/page/2/#findComment-428385 Share on other sites More sharing options...
datadiffusion Posted August 26, 2015 Share Posted August 26, 2015 Some say he took retirement, dissolusioned with the forum, it's posters, and the industry he once loved. There are others, who say he never left... So, I've decided to take my work back underground.... to stop it falling into the wrong hands Link to comment https://www.thesecurityinstaller.co.uk/community/topic/38987-double-balanced-door-contacts/page/2/#findComment-428431 Share on other sites More sharing options...
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