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Cannot prime plumbed Bezzera TP B/3000NT machine!
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saborcafe
Senior Member


Joined: 12 Jun 2011
Posts: 32
Location: MI
Expertise: I live coffee

Posted Sat Nov 2, 2013, 7:56pm
Subject: Cannot prime plumbed Bezzera TP B/3000NT machine!
 

Hello guys,

I recently got a new heating element for the machine so I went ahead and also descaled the boiler. When I put everything back together I left the boiler empty. Tried multiple times but the machine would not fill up. Checked the inlet for obstructions and it seems fine. I took the top fitting for the water spout and filled the boiler manually to the top!. Machine still will not pump water out of the brew head. Finally, I took a fitting off that is located at the pump head and tried priming there and water does come out of the brew head when I do this but after capping it again it will not pump water(Picture attached)! The cap gives access to some kind of water filter.
Does anybody have any idea of what is going on? Is there an inlet solenoid that needs to open for water to rush in? What keeps the water pressure from forcing water into the machine if I open all the wands? How come when I remove the cap from the pump head, water does not shoot out? This should help me understand my problem. Please help, I am without my morning brew lol!

saborcafe: machine.JPG
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saborcafe
Senior Member


Joined: 12 Jun 2011
Posts: 32
Location: MI
Expertise: I live coffee

Posted Sun Nov 3, 2013, 4:08pm
Subject: Re: Cannot prime plumbed Bezzera TP B/3000NT machine!
 

I figured it out. I started to look at some videos that show the inner parts of a rotary pump and it made no sense that after removing the filter water did not rush out. So I removed the inlet line and there was no water so I knew the line was plugged. Well, I cracked a fitting when removing the heater earlier and I had to solder a new fitting and it must have sucked enough solder that it plugged the inlet line shut! lol
So I removed the solder and used a screwdriver to prevent plugging when soldering again. Works perfect now!
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