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Discussions > Coffee > Machines > Bunn A10 trouble...  
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eggs
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eggs
Joined: 21 Jan 2010
Posts: 4
Location: Mid Life
Expertise: I like coffee

Posted Thu Jan 21, 2010, 4:57am
Subject: Bunn A10 trouble I hope to resolve
 

Brand new signed up in hopes of receiving an answer to my issue with my Bunn A10.  I bought it new about 8 years ago. Great machine not the automatic one but the pour over unit. I use it pretty much once a day before I leave for work.  I've replaced the warmer plate and other than that it's been bullet proof. So that's that background.

The trouble is when I go to dump the grounds I've started noticing that only half of them are wet. Normally the left side as  you face the machine.

What I've tried to correct this so far is
Remove the spray head to be sure the five holes are clear, they are.
Run a plastic zip tie up the siphon tube to be sure it was not clogged.


None of this worked to resolve the issue.  Anyone have any ideas. I looked over at Bunn's web site for troubleshoot tips and this was not one of the many listed with a solution. Seems more peopel have issues with this thing overflowing than under flowing.

Thanks
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gime2much
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Joined: 10 Dec 2004
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Espresso: La Pavoni, Astoria comm, 2...
Grinder: La Pavoni Zip, Bunn...
Drip: Bunn comm
Roaster: Popcorn popper (air),co/ufo
Posted Thu Jan 21, 2010, 11:10am
Subject: Re: Bunn A10 trouble I hope to resolve
 

More info please.  Do this carefully as dealing with 200f water can cause pain.

Leave the grind basket out and run some water thru the machine while holding a container to catch it. Observe the spray pattern as it exits the head.

Try that then tell us more.

 
Dan Brewer
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eggs
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eggs
Joined: 21 Jan 2010
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Posted Thu Jan 21, 2010, 1:31pm
Subject: Re: Bunn A10 trouble I hope to resolve
 

I also email support at Bunn. Never have I contacted them before. Was very surprised to get a call back within a hour or so. Nice company.

They suggested that it's the hole that the water drains into the tank In the PDF it's called a Fitting SLTD - Tank Inlet . He said the water pressure draining into the tank via this inlet is what forces the water out of the tank. If it is blocked with calcium then the water pressure would be low do to this the restriction in the inlet.  I need to take the top off when I get home and look at that.

He suggested running some vinegar through the machine also but I'm a bit worried that will leave an after taste.
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gime2much
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Joined: 10 Dec 2004
Posts: 1,965
Location: Sunny S Fl
Expertise: I love coffee

Espresso: La Pavoni, Astoria comm, 2...
Grinder: La Pavoni Zip, Bunn...
Drip: Bunn comm
Roaster: Popcorn popper (air),co/ufo
Posted Thu Jan 21, 2010, 1:55pm
Subject: Re: Bunn A10 trouble I hope to resolve
 

Nah..just a hellava lot of rinsing. Citric acid (sour salt) is the preferred descaler and very cheap. 2 tablespoons to a quart of hot water, let it sit overnight, rinse a couple of times and all will be well.

 
Dan Brewer
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eggs
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eggs
Joined: 21 Jan 2010
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Posted Fri Jan 22, 2010, 4:42am
Subject: Re: Bunn A10 trouble I hope to resolve
 

I took the cover off and looked at the inlet. It is a big hole I'd surprised if it could get plugged. Mine was clean as a whistle, by the way.

Ran a pot though with the basket off and a bowl  under the spray head to catch the water. It was pretty weak and rarely did it spray. Most of the time it just dribbled out and made a stream off the center of the spray head.

Where do you get Citric Acid. Is that in the baking section of a grocery store????
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ljguitar
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ljguitar
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Espresso: Expobar Pulsar
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Roaster: Behmor•Variacs
Posted Fri Jan 22, 2010, 10:55pm
Subject: Re: Bunn A10 trouble I hope to resolve
 

eggs Said:

I took the cover off and looked at the inlet. It is a big hole I'd surprised if it could get plugged. Mine was clean as a whistle, by the way.

Posted January 22, 2010 link

HI eggs...
Yeah most grocers would have it.

The top of the tube is not the issue, but minerals build up down inside. I've run the same spring-thing through the top opening as I run backwards up through the head. And I run them all the way as far as I can...and work them in a bit when they meet resistance.

Our is going on 12 years old and still working fine - the 20 year old version is in the RV serving us well there. Periodic cleanings serve them well.



`

 
L  a  r  r  Y          J

<°)))><
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eggs
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eggs
Joined: 21 Jan 2010
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Location: Mid Life
Expertise: I like coffee

Posted Mon Jan 25, 2010, 5:06am
Subject: Re: Bunn A10 trouble I hope to resolve
 

Well I couldn't find Citric Acid so went the vinegar route. Holy man what a difference. I guess I need to do this a little more often then once every 8 years :) I'll add this task to my semi annual smoke detector battery change list.

Thanks for the inputs
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