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Thread: Giotto Premium (hybrid) pressure guage broken again!

  1. #1
    Senior Member
    Join Date
    Dec 2006
    Perth WA

    Giotto Premium (hybrid) pressure guage broken again!

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Well I am about to replace the second pressure guage. ( The half circle version) Both faulty gauges show little pressure.* I have taken the guage off the machine and looked for scale that might be blocking the pipe. The pipe is quite clear as far as I could reach with a pin. The hole into the boiler was clear of any obstruction. I am not sure if others have repaired the guage or got one working.* This guage has lasted about 18 months.
    If any one has any information it would be helpful before I fit the new guage.

    It was at zero pressure before I took it off.* I sucked a bit of water out of the pipe and today I got about 3bars pressure. Do they fill up with water?

  2. #2
    Senior Member
    Join Date
    Mar 2011

    Re: Giotto Premium (hybrid) pressure guage broken again!

    I recently cleared an old ECM giotto gauge that iaindb gave me for free cause it was full of scale. Becuase the pipe is thin, its really hard to find out where the scale is.
    The way I cleared mine was to screw the fitting on the end and use it as a bit of a funnel for putting some undiluted descaler down it. I then got a a lighter and ran the flame up and down the pipe to heat it, the scale and the descaler until it started bubbling, at which point I took the flame off, got my unwound paper clip (about 7cm long) to poke the scale, then repeated. You can tell where the scale is by how far down the pipe you have to apply the flame to get the descaler to bubble. When its at the bottom the scale is gone!
    Hope that helps if its a scale problem.

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