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Mooncat
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Posted: Mon May 18, 2009 9:26 pm |
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Joined: Sun Dec 23, 2007 4:11 pm Posts: 9930 Location: Wales Has thanked: 33 times Been thanked: 42 times
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I was given one of these old hand-cranked instruments, but it doesn't work. After seeking advice I opened it up, found a wire adrift, but reconnecting it gives no change. It appears to have been repaired before. Is it worth persevering with, or should I scrap it and get a new one?
_________________ I started out with nothing, I still have most of it. Directmail scam information site: http://astrocat.proboards.com/index.cgi?
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ultimatehandyman
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Posted: Mon May 18, 2009 9:36 pm |
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Joined: Sat Jul 16, 2005 8:06 pm Posts: 20642 Location: Darwen, Lancashire Has thanked: 127 times Been thanked: 392 times
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Well, I have never seen a hand cranked one, but the one I use at work is an old one and is in a old leather case. They are not cheap to buy brand new!
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Sparky James
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Posted: Mon May 18, 2009 10:08 pm |
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Joined: Wed Dec 31, 2008 9:23 am Posts: 1152 Location: Down on the Farm Has thanked: 10 times Been thanked: 75 times
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The old hand cranks dont provide enough current to comply with the current regs for certification perposes but are a handy thin to have around for fault finding. Im shure as long as the windings are good the meter will be easy to fix.
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Mooncat
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Posted: Mon May 18, 2009 10:36 pm |
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Joined: Sun Dec 23, 2007 4:11 pm Posts: 9930 Location: Wales Has thanked: 33 times Been thanked: 42 times
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The circuit is different to the official diagrams I've seen, there is a 0.1uF 1500V capacitor and a 3K9 resistor which seem to be OK, plus two other unidentifiable components. The generator is healthy, so are the meter coils. It seems to have been repaired a few times judging by the soldering, and as it was left in a sorry state, it may have defeated the last person.
Just looked at some new models that comply with latest regs, prices between £90 and a couple of grand!. I've now arranged for a washing machine engineer I know to call by on Wednesday, to test the UFH element before I cover it with tiles.
_________________ I started out with nothing, I still have most of it. Directmail scam information site: http://astrocat.proboards.com/index.cgi?
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[ 4 posts ] |
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