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la pavoni bar v2 pumps runs too long need help
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Discussions > Espresso > Machines > la pavoni bar v2...  
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jmays
Senior Member
jmays
Joined: 25 May 2004
Posts: 26
Location: shreveport louisiana
Expertise: I live coffee

Espresso: la pavoni bar v2
Grinder: faema mpn
Posted Mon Feb 3, 2014, 3:42pm
Subject: la pavoni bar v2 pumps runs too long need help
 

I have a pavoni bar v2 and have had it since 2004 in my home with out major problems, but now I have an issue with the pump running for a long time when it clicks on The water level looks good thru the sight glass. Where should I start?
Thanks
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JY
Senior Member
JY
Joined: 2 Jun 2011
Posts: 27
Location: Washington DC
Expertise: I live coffee

Espresso: Grimac Mini, Pavoni P/Tre,
Grinder: Preciso, Cunill Brasil,...
Vac Pot: Yama, Cory, Rasotherm
Drip: V-60, Clever, Brazen
Roaster: Behmor
Posted Tue Feb 4, 2014, 12:07pm
Subject: Re: la pavoni bar v2 pumps runs too long need help
 

Have you checked for scale on the level probe? There could also be scale blocking the inlet to the sight glass keeping the level looking normal, when in fact it's over filling.

Has the steam become progressively more 'wet'?


-Jim
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fnacer
Senior Member


Joined: 25 Feb 2007
Posts: 464
Location: Denver
Expertise: I love coffee

Espresso: Salvatore E61, Vivaldi Mini...
Grinder: Mazzer Mini, Gaggia MDF,...
Roaster: Behmor 1600
Posted Wed Feb 5, 2014, 12:40am
Subject: Re: la pavoni bar v2 pumps runs too long need help
 

Continuing on the theme of scale, it could also be that the hose to the boiler is so full of scale that it takes a longer time for the pump to deliver the right amount of water to the boiler.

So start by descaling.
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jmays
Senior Member
jmays
Joined: 25 May 2004
Posts: 26
Location: shreveport louisiana
Expertise: I live coffee

Espresso: la pavoni bar v2
Grinder: faema mpn
Posted Wed Feb 5, 2014, 6:38am
Subject: Re: la pavoni bar v2 pumps runs too long need help
 

thanks everyone for the quick reply, yesterday I woke and went to pull some shots and the fill cycle came on and would not stop so I shut it down, but not until I pulled two shots lol.

This whole process took me about 2 hours to fix this issue with the pavoni, there was indeed scale in the inlet of the parker valve hindering it from filling like it should, I removed the whole parker valve assembly and copper tubing that connected it to the tee under the tray and the tube to the boiler,

I took the valve assembly to the garage and put it in the vise and broke it down and it had scale deposits almost completely closing off the inlet the it, I cleaned it all out and the tubing and soaked it all in citric acid solution and threaded it all back together and used some medium duty thread lock I had sitting around, put it all back together and WOW!!!!   You can really here it filling with some power now

what I have done to this machine in the past few months  has been rebuilt pump and new pump motor bearings and now the scale removed from the parker valve, and this machine really moves the water and is very quiet and the pumps runs for just 2 or 3 seconds to do what it should.

I am very happy this is fixed just makes me wonder about the scale in other areas of the machine!?!?!?!?!?!?
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jmays
Senior Member
jmays
Joined: 25 May 2004
Posts: 26
Location: shreveport louisiana
Expertise: I live coffee

Espresso: la pavoni bar v2
Grinder: faema mpn
Posted Wed Feb 5, 2014, 7:08am
Subject: Re: la pavoni bar v2 pumps runs too long need help
 

JY Said:

Have you checked for scale on the level probe? There could also be scale blocking the inlet to the sight glass keeping the level looking normal, when in fact it's over filling.

Has the steam become progressively more 'wet'?


-Jim

Posted February 4, 2014 link

the steam seems to be just fine, I fixed the issue with the pump running and running and next I will get into the sight glass issue, If I shut the machine down and let it cool the sight glass water level  will come back to middle area and when I have it on for about three days it will slowly rise in the tube.

I will have to remove the sight glass and all tubing to it and descale it,  there was scale in the inlet to my parker valve assembly keeping the pump running for long periods so I suspect the same issue with the glass now.

thanks Jim
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