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Help! Rancilio Sylvia experts: Leak back into OPV after adjust and losing prime.
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jpc
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Joined: 4 Jul 2008
Posts: 22
Location: madison, ct
Expertise: I love coffee

Espresso: rancilio sylvia
Grinder: la cimbali, adapted by chris
Vac Pot: cona
Roaster: alpenroast
Posted Sun May 5, 2013, 4:49pm
Subject: Help! Rancilio Sylvia experts: Leak back into OPV after adjust and losing prime.
 

i am hoping someone out there can help.

about a month ago i re-adjusted the opv to slightly reduce group pressure. that has improved my shots. but ever since i've had to prime the group for about 15 seconds before water will come out!

i keep the machine on and ready to go 24 hours/day. there is no apparent leak to the outside and i've noticed bubbling of steam back through the opv and overflow hose. also, i've noticed that the level of water in the reservoir rises when the machine is left idle. so, i suspect that the opv is now leaking slowly back from the boiler to the water reservoir. i don't want to overheat the element if the boiler is out of water.

i'm hoping someone may know if i have to replace the opv or can guide me through a repair.

thanks in advance.

jpc
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frcn
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frcn
Joined: 23 Dec 2001
Posts: 3,354
Location: Northern California
Expertise: Professional

Espresso: Vibiemme Domobar Double
Grinder: Mazzer Kony, Baratza...
Vac Pot: Hario, 2 Cory pots, 1 Cory...
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Posted Sun May 5, 2013, 7:37pm
Subject: Re: Help! Rancilio Sylvia leak backs into OPV after adjust and losing prime.
 

Sounds l;like the OPV needs to be removed and the parts inspected. Possibly some crud or scale =got in it.  Did you check the adjustment with a reliable gauge?

 
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