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Rancilio Silvia experts - help diagnosing problem please
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willdoward
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Joined: 16 Mar 2014
Posts: 2
Location: London, UK
Expertise: I love coffee

Posted Sun Mar 16, 2014, 1:38pm
Subject: Rancilio Silvia experts - help diagnosing problem please
 

Hi,

I would be grateful for any advice on diagnosing why my Rancilio has stopped working please.

I have a V2 Rancilio Silvia where I recently upgraded to a V3 steam wand and have just begun back flushing with Cafiza.

Last week, I pulled an initial successful espresso shot. However the group head then stopped working suddenly when I tried to pull a second shot just afterwards yet steam and water come out of the new wand.

I have taken the shower screen off, cleaned it and also disassembled the solenoid spring/valve and not found anything particularly unusual. I have also reset the thermostat.

The boiler is working and so is the pump. When I turn the coffee brew button on (the first time I turn the machine on) I get a little trickle of water coming out of the group head for the first few seconds but then the water stops.

When I turn the coffee brew button off I do get some water coming through the 3 way valve into the drip tray.

Really not sure if this is being caused by a blockage in the boiler (? secondary to my Cafiza back flushing) or that it is the solenoid valve or something else.

Appreciate any advice on this.

Thanks
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JGG
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JGG
Joined: 31 Mar 2006
Posts: 1,385
Location: Kentucky, US
Expertise: I like coffee

Espresso: PID Silvia; PID Alexia
Grinder: Mazzer SJ
Roaster: Hottop D w/HTC+TC4C
Posted Mon Mar 17, 2014, 4:05am
Subject: Re: Rancilio Silvia experts - help diagnosing problem please
 

The usual suspects would be blockage of the channels in the brass body of the 3-way valve, or a burnt-out solenoid.

Jim
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Dayglow
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Dayglow
Joined: 5 Oct 2007
Posts: 74
Location: Greenville, NC
Expertise: I live coffee

Posted Mon Mar 17, 2014, 4:50am
Subject: Re: Rancilio Silvia experts - help diagnosing problem please
 

Agreed. The recent overhaul and descale could have loosened something that has now lodged itself someplace not fun. May have to take the entire output flow path apart and blow through the parts until you feel resistance. When you find them just give a good long descale soak and you should be in business.
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willdoward
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Joined: 16 Mar 2014
Posts: 2
Location: London, UK
Expertise: I love coffee

Posted Tue Mar 18, 2014, 7:33am
Subject: Re: Rancilio Silvia experts - help diagnosing problem please
 

Thanks both for the advice.
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