Author Topic: Gaggia Classic - Tripping RCD (Safety Switch, GFC)  (Read 8583 times)

Offline teds01

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Gaggia Classic - Tripping RCD (Safety Switch, GFC)
« on: October 24, 2013, 02:47:28 AM »
Hi,
I'm in Australia and I recently acquired a second hand Gaggia Classic. After a dozen or so shots water stopped coming through the group head. I pulled the boiler out, dismantled OPV and solenoid valve plus group head. Soaked in descaler over night. I gave everything a good clean. I reassembled the machine and it now trips the safety switch. It's been about a week since I assembled it.

I have a feeling it could be moisture in or around the elements. How do I test if the elements are shorting? How can I troubleshoot this? I'm thinking I may have to dry the boiler/element in the oven or something? Any advice greatly appreciated!

Offline JojoS

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Re: Gaggia Classic - Tripping RCD (Safety Switch, GFC)
« Reply #1 on: October 24, 2013, 05:47:50 AM »
You soaked the top part of the boiler? That will surely trip the circuit breakers. I've read from an old post of Tex is to let the top of the boiler completely dry in a warm oven for several hours. You have to dig up that post from the yahoo group.

Offline teds01

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Re: Gaggia Classic - Tripping RCD (Safety Switch, GFC)
« Reply #2 on: October 24, 2013, 06:36:41 AM »
Hi,
Sorry, not soaked the top part of the boiler. For that I turned it upside down and filled it with a descaling solution. Soaked the inside of the boiler.
I plan to try the oven thing this weekend unless someone can suggest some alternatives or a way of confirming the element and moisture is the issue.
Thanks

Offline JojoS

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Re: Gaggia Classic - Tripping RCD (Safety Switch, GFC)
« Reply #3 on: October 24, 2013, 07:11:53 AM »
Do you have a multimeter? That should confirm shorting. You can also just disconnect the wires to the elements and see if it will still trip the breakers.

Offline SusanJoM

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Re: Gaggia Classic - Tripping RCD (Safety Switch, GFC)
« Reply #4 on: October 24, 2013, 10:55:27 AM »
Don't worry about it.  Put it in the oven overnight just as Joseph suggested.
It will dry out and be fine.

“Not everything that can be counted counts, and not everything that counts can be counted.”
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Offline teds01

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Re: Gaggia Classic - Tripping RCD (Safety Switch, GFC)
« Reply #5 on: October 25, 2013, 01:59:14 AM »
Hi,
Disconnected the elements, and the RCD did not trip. So I'm assuming that could easily be moisture in the elements. I'll pull the boiler out this evening and sit it in the oven. I recall 300F, I think in Australia that's about 150C. I'll search for that info from Tex, but if anyone can confirm that would be good. Thanks again for the replies! I'll let you all know how it goes.

Offline D4F

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Re: Gaggia Classic - Tripping RCD (Safety Switch, GFC)
« Reply #6 on: October 25, 2013, 11:35:31 AM »
You are drying it, not cooking, so the temperature is not real exacting  :).  Above boiling, below melting and do not hurry.  You are trying to get moisture out from crevices and spaces, not just evaporation.  Since the boiler is at about 300F for steam, that seems a good temperature.

Offline GatesofDawn67

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Re: Gaggia Classic - Tripping RCD (Safety Switch, GFC)
« Reply #7 on: October 25, 2013, 05:31:20 PM »
After cleaning the solenoid valve, it should be lubricated with food-grade grease.
-Steve

"One test result is worth one thousand expert opinions." Wernher von Braun

Offline teds01

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Re: Gaggia Classic - Tripping RCD (Safety Switch, GFC)
« Reply #8 on: October 25, 2013, 07:22:43 PM »
Hi all,

Thanks for the replies. I put the boiler in the oven at about 150C (300F) for about one hour. Thanks to Tex's info from the yahoo group.

Reassembled it and it is all good, no longer tripping the safety switch.

Thanks for that, I have an initial problem with machine that I'll start a new thread on.

Thanks!

 

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