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Saeco Vienna brewing problem. Pump ?
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aljawo
Senior Member


Joined: 18 Sep 2009
Posts: 91
Location: Montreal
Expertise: I love coffee

Espresso: Rancilio Silvia
Grinder: Baratza Virtuoso
Vac Pot: Bialetti Brikka
Posted Mon Apr 7, 2014, 8:01am
Subject: Saeco Vienna brewing problem. Pump ?
 

Hello all,
  I just bought a used Saeco Vienna Superautomatica and I am having trouble with what I think may be the pump.
The symptom is that when the machine is on for a while, although I can manage to pump water through the steam wand for priming, when I try to brew an espresso, all starts normally until the moment of pushing the water through the grounds, the pump starts humming, no water goes out, and of course it times out and the red light goes on.

I put the machine in test mode and I tried the pump with no grounds through the coffee path and water comes out normally.

Is it possible that if the general temperature of the machine goes high (few hours on) the pump starts misbehaving? The problem was very deceitful because every time I tried it after being off, it warmed up normally, I could prime it, and then it brewed the coffees perfectly. Not only until I left it on all the night, I tried in the morning and the problem was there..

Video:

http://youtu.be/xgkzn_DHw3E
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jannus
Senior Member


Joined: 19 Mar 2013
Posts: 66
Location: South Africa, Cape Town
Expertise: I like coffee

Espresso: NS ElliMatic & OLD Via...
Grinder: mazzer sj
Vac Pot: nope
Drip: yup
Roaster: nope
Posted Wed Apr 16, 2014, 6:38pm
Subject: Re: Saeco Vienna brewing problem. Pump ?
 

Hi Aljawo,

Couple of ideas:

1: in test mode (especially after the machine has been on for long), check if the flow meter functions?  Should be OK from other details you give, but worth checking.
2: check the opv located after the pump.  If lots of water end up in your drip tray that might be an issue -  it might be opening too soon or stuck open.
3: a good descale / clean might be in order?
4: just in case you're not familiar with superautomatics, remember the grind is not as fine as a manual espresso machine. If you set it too fine it will choke and give you the same symptoms as you described.

Let us know what you find?
Jan
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aljawo
Senior Member


Joined: 18 Sep 2009
Posts: 91
Location: Montreal
Expertise: I love coffee

Espresso: Rancilio Silvia
Grinder: Baratza Virtuoso
Vac Pot: Bialetti Brikka
Posted Thu Apr 17, 2014, 7:51am
Subject: Re: Saeco Vienna brewing problem. Pump ?
 

Thanks Jannus for the suggestions... Couple of days ago I took the chance of ordering a new pump and I changed it.
I know that there was a risk of being the electronics given the 'temparture' factor..  So thanks to internet, I managed to change the pump myself and for now it seems to work fine..

I am trying to repeat the test scenarios and so far (fingers crossed knocking on wood) it looks ok...

I appreciate your answer.. they are always useful for the future (hope never needed again hahah)

Cheers,

Alex.-
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