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The Southern California Linux Expo (SCALE) is an annual Linux, open source and free software conference held in Los Angeles, California, since 2002. Despite having Linux in its name, SCALE covers all open source operating systems and software. It is a volunteer-run event.
The event features an expo floor with both commercial and non-profit exhibitors, as well as 4 days of seminars on the topic of Linux and Open Source software. Sessions and presentations cover a broad spectrum of topics and technical levels.
SCALE grew out of a series of LUGFests put on by the Simi Conejo Linux Users Group in the late 90s. There were four of them, held every 6 months at the Nortel development facility in Simi Valley, California. They ended when Nortel closed that facility in 2001. Subsequently, members from SCLUG, USCLUG and UCLALUG organized to create a more regional event, which they named the Southern California Linux Expo.
Companies, organizations and projects represented at SCALE include Linux-based projects such as Debian, Gentoo Linux, the Fedora Project, KDE and GNOME, other open-source operating systems including NetBSD and FreeBSD, software projects such as Django, open-source database systems such as MySQL and PostgreSQL, other open-source applications such as Drupal, Inkscape, MythTV and The Document Foundation, activist organizations such as Software Freedom Law Center and the Electronic Frontier Foundation, major technology companies such as IBM, HP and Sharp, web companies including Google, Facebook and eHarmony, and internet projects including OpenStreetMap.

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  1. J

    Fernox scale preventer quantomat

    Got about ten of these if anyone is interested £25 each
  2. T

    Electronic scale inhibitor

    Installing an electronic scale inhibitor, done plenty of in-line ones but the question I have is with the electronic ones can I wrap the wires around the hot cylinder outlet or can it only go on cold feeds? Thanks in advance.
  3. M

    FGA readings off the scale!

    Hi doing a Landlord check yesterday, Potterton condensing boiler. FGA readings were off the scale, analyser actually came up with sensor overload & shut down. To cut a long story short, someone in the past had changed the gas valve, and hadn't set it up. Now done & working ok. Question is...
  4. E

    Green scale masters

    Any one had problems with these inline lime filters, I got called out at 1am last night from a old lady I fitted a boiler for 18 months ago, Her scale master broke in half , sending water every where , 1st floor flat , Thats my 4th one to gone down .2 x spilts on cases & 1 pin hole on...
  5. A

    Gritty bits of scale from triton electric shower.

    Hi. I'm new to this forum so please bare with me. I was called to a job 2 days ago, bloke had alternating pressure/temperature on his tritton electic shower I took the head off and shook loads of sharp sand like bits of scale out. I ran the shower on/off slow/fast hot/cold for about ten mins...
  6. G

    Brita Filters and water filtered taps.

    The mother has requested a Brita filter jug from Santa. Her reason being that she's heard that it reduces the scale build up in the kettle. Brita's website states a reduction in lime scale, so she could be right. Anyone with one who could share their experiences? I was thinking of installing a...
  7. plumb_know

    cylinder blockage???

    just looking to pick all your brains again on a job i recently attended for the insurance company i work for. Job background: customer wanted to replace downstairs basin taps and did this him self to save money (which has not happened), he isolated water via turning off mains internal stopcock...
  8. A

    ravenheat

    hi all called out ole lady hot water problem ravenheat csi 85 condensing GC 47 581- 20 the central heating side fine hw side , went through the mi,s test, according to Mi,s alls well. tried unsuccesfuly to get technical. flow good pressure good diverter good , i yr old plate...
  9. P

    best scale inhibitors

    from exeperiance what is the best magnetic scale inhibitor, gotta put one before an electric shower as hard water is killing the internals Thanks
  10. P

    Advice on scale removal in hot water tank

    I am having some problems with my hot water tank, immersion heater is on for hours but we run out of hot water after the bath is 3/4 full. I have changed the immersion heater and put a new one in with no improvements so i am thinking that there is scale build up in the bottom of the tank...
  11. W

    Limescale inside copper cold water feed pipe.

    I have a Triton T80xr electric shower (approx 5 years old). 4 months ago I successfully replaced the stabiliser valve and solenoid assembly after it stopped working BUT the heater has now stopped working again. It's obviously not worth replacing the same part again so I am looking at replacing...
  12. W

    Can you fit an inline filter on supply pipe to CWSC

    To help prevent all the bits that accumulate in the CWSC or is it a) mainly scale that's dissolved in the water and will get through anyway b) too much of a hassle because the filter will get clogged too quickly
  13. M

    whats the best to use for cleaing scale out of an electric shower?

    the title says it all....
  14. L

    Lime scale

    Hi, can anybody recommend a good lime scale preventer. Many thanks in advance Len .
  15. O

    Best light commercial scale prevention?

    I’ve had a query from a small sports facility in London. They have half a dozen or so showers in pretty frequent use and suffer from lime scale problems. At present they just keep on replacing the blocked shower heads. What kind of prevention system works in a small commercial setup like...
  16. J

    Wolf CGB 50 reliability issues

    Hi gents......be gentle on a first time poster eh? My company have installed a number of Wolf CGB boilers, either the CGB35 or the CGB50................which as the model number suggests are around 35kw and 50kw output. Now I recall other threads on this forum suggesting that back up was...
  17. D

    Alpha cd32c hot water for 10 secs

    Hi all i had a problem with the bolier indicating 2 fault lights A flashing B continuosly, stripped down the diverter valve and removed some hard limescale, cleaned out, refitted valve and now heating is sound only problem remains is when i turn on hot tap boiler ignites but after 20 secs the...
  18. B

    ferrolis quality's a sliding scale

    been to fix 2 ferrolis today the first a optima 701 with a knackered ev and prv,had to fit a external ev as could not get the flue out but it went straightforward the 701 is generally well built,then on to its tat younger relative a domicompact 24b,no power from pcb to pump ntc checks out...
  19. P

    PowerFlush and Salamander SESI scale inhibitor

    Hi, I have a Potterton Combi 80 boiler which has been working perfectly until few weeks ago. It started to lock itself out which meant that I had to reset the boiler. Since I have the boiler cover from British Gas, I called them to investigate the issue. What the guy suggested was that it is...
  20. D

    Your views

    I have put in a boiler, bog standard Valiant condensing boiler, I have put in quite a few, all with no problem, but a customer asked me about fitting a scale inhibitor/reducer, I dont have a problem fitting them, if they ask me BUT I have never bother fitting them before (even when I was...
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