Vetrano continuous hissing - vacuum breaker valve issue?

by **steveschoon** on Sat Jan 09, 2010 3:48 pm

In the last few weeks, my Vetrano has started hissing continuously. I took the top and side covers off, and I can see a bit of steam coming from the pin/valve on top of the boiler. Jiggled it a bit with pliers, but it just does not seem to completely close.

Do these vacuum breaker valves go bad after a few years (I've had the machine 4-5 years) or need to be cleaned every now and then?

by **Beezer** on Sat Jan 09, 2010 3:58 pm

Sounds like the vacuum breaker needs cleaning or replacing. They tend to get covered in scale after a few years, and then they won't seal properly. You can unscrew the top of the valve and soak it in vinegar to clean it. That may be enough to get it to close. If that doesn't work, you can get a replacement from Chris' Coffee.

by **RegulatorJohnson** on Sat Jan 09, 2010 5:09 pm

i think you can replace the o-ring that's in there with one from home depot or lowes. take it apart and find the o-ring then get the same one.

by **steveschoon** on Sat Jan 09, 2010 9:56 pm

Thanks Beezer and RegulatorJohnson - I was able to take the valve off and clean it in a weak citric acid solution. That cleaned off a little bit of scale. I also had to replace the O-ring as it had really deteriorated. After those two changes - good as new.

Thanks so much for the advice!

-Steve


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