Replacement nucleus for Rancilio Lucifer 2-way valve?

Equipment doesn't work? Troubleshooting? If you're handy, members can help.
bradm3

#1: Post by bradm3 »

HI,
I'm starting a journey to rebuild a Rancilio Epoca 2Gr that I picked up. One of the first things wrong is that the 2-way fill solenoid partially leaks. It originally was plugged/wouldn't open, so I pulled it apart and cleaned it up/descaled. But now, after the first fill actuation, it doesn't fully close. I can hear a small leaking from the unit and the boiler will slowly overfill.

Looking online the official Rancilio part number Rancilio 10060466 . CHARGE+CHECK ELECTROV.24V . On the solenoid itself, it says it's a Lucifer 481865C2F DZ02C2 24V /= 9W . .

I'm not able to find a replacement nucleus and the whole valve is quite pricey for what it is. Any ideas on where to source the nucleus, how to repair, or if there is a cheaper alternative 2-way solenoid 24v that people use as a replacement?

Thanks
Brad

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HB
Admin

#2: Post by HB »

bradm3 wrote:One of the first things wrong is that the 2-way fill solenoid partially leaks.
What's the line pressure? Maybe it's too high and that's why it's leaking. The fill pressure doesn't need to be high at all, around 2-3 bar is more than enough to fill a steam boiler.
Dan Kehn

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ira
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#3: Post by ira »

A picture would help, but there's a good chance that Parker makes a valve that would work. The relevant parker catalog is here:

https://ph.parker.com/us/en/parker-3-wa ... oid-valves
or maybe here:

https://ph.parker.com/us/en/solenoid-va ... List:true&

Ira

bradm3 (original poster)

#4: Post by bradm3 (original poster) »

I'll check the supply line but last time I checked a couple of years ago it was within city norms. iirc around 65psi.

bradm3 (original poster)

#5: Post by bradm3 (original poster) »

Will post the valve tomorrow. Thanks, will check the catalog.

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HB
Admin

#6: Post by HB »

bradm3 wrote:iirc around 65psi.
That's on the high side. I'd add a pressure regulator set to 2 bar.
Dan Kehn

bradm3 (original poster)

#7: Post by bradm3 (original poster) »

Update - I've put this issue aside for a bit. As I've looked at things this machine is in very poor state of maintenance. I've decided to disassemble & descale/clean everything. That said, some responses to the above posters.

My line pressure is 70psi.

Here are some photos of the valve:



https://photos.app.goo.gl/TQdWHCQ4gZU4gP92A
https://photos.app.goo.gl/jRB1CrsVaKT1Jj669

Photos as I go of the rebuild
https://photos.app.goo.gl/8nVyhKQEscnXb3Tr6