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Thread: Steam coming from grouphead / Silvia

  1. #1
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    Steam coming from grouphead / Silvia

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hey everyone,

    I recently joined the forum after finding a lot of valuable information. So thank you for all the contributions you all put to this forum, its great!

    Okay, so I have owned my Rancilio Silvia for just under 2 years or so. It has been working flawlessly until a few months ago I noticed that the grouphead was purging steam as well as hot water. I will go spell out my process to help a diagnosis;

    - machine goes on, some temperature surfing to re trigger the boiler to get everything up to heat
    - once the machine is up to heat, flick on the steam switch - steam milk once light flicks off
    - then turn off steam and turn on the water switch to purge the rest of the steam out of the machine (purge until water runs and boiler turns back on)
    - so now the Silvia is up to temp to extract the shot, I do a short purge of the group head before locking in the portafilter. This is when I find the grouphead purging out quite a bit of steam as well as water... Is this normal? I never noticed it in the beginning. I feel like this steam would burn the grinds before it even starts to extract which in turn would never allow me to create a perfect cup... Endlessly frustrating

    I have attached a video of the steam coming out.



    Thanks in advance guys!

  2. #2
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    My Saeco Via Venezia always does this. I just figured it was because it is a thermostat driven machine so the temperature can spike up to boiling temperature sometimes, so this creates steam and it has to go somewhere, whether it forces water back down the inlet piping and the steam occupies a tiny space in the boiler which then purges initially when the group is opened.
    Maybe it's not meant to do this and something's wrong. By this logic, perhaps your thermostat isn't switching off soon enough and is causing some steam to be created in the boiler when it shouldn't be? I'm not sure, still quite new to small boiler machines.

  3. #3
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    I have the same thing on my v3, I'm guessing the boiler just gets too hot and starts producing steam ? I also get steam coming out from around the group head when the portafilter is not locked in

  4. #4
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    Thanks for the replies. I did wonder if it was just a temperature thing. I usually try to purge out as much of the steam as I can without dropping the temp too low...

    I have an auber PID arriving this week, so I hope that resolves the issue..?

  5. #5
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    There would be a bit of pressure in the boiler, so when its released outside of the grouphead to a lower pressure (assuming the temp stays quite constant) then the volume will increase a.k.a to steam.

    My silvia does the same thing and I haven't seen it to be a problem. I believe there was a bit less steam after install the auber pid simply because it doesnt get as hot as the thermostat allows it to initially.

  6. #6
    Coffee Newbie okitoki's Avatar
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    I had the same issue with my Pre-PID Silvia too. My temp surfing involves a slight purge once the boiler light goes off on the top range before I lock and pull my shot.

    With the PID installed.... No more temp surfing and purging needed

  7. #7
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    Quote Originally Posted by okitoki View Post
    I had the same issue with my Pre-PID Silvia too. My temp surfing involves a slight purge once the boiler light goes off on the top range before I lock and pull my shot.

    With the PID installed.... No more temp surfing and purging needed
    Yeah, I was hoping the PID would resolve this. Really looking forward to the PID being fitted

  8. #8
    Coffee Newbie okitoki's Avatar
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    Did u get the one with the steam control too? I find the steaming power seems to last longer and more powerful than before installing it.

    After using my isomac tea for awhile, I had the misconception that the Silvia's steam was low, so when I demo it to the new owner, It blew a fair bit of milk on to me on the first blast

    Well, the new owner was very happy to see that it was strong. And darn easy to make nice silky steamed milk.

  9. #9
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    Yeah, I ordered the steam control version. I decided the pre infusion version wasn't worth the extra pennies cause it's not a real pre infusion anyway...

  10. #10
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    Behmor Brazen - $249 - Free Freight
    I can gladly report that after fitting the Auber Steam Control PID last night, the issue with the steam coming from the grouphead is a thing of the past! Now I just have to get into a routine with less purging haha, not required so much anymore
    okitoki likes this.



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