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Slow extraction – Faema E61 Jublie
Our Faema E61 Jubile suddenly extracts shots very slowly (it used to work perfectly). It was bought used, and before installation a few months ago, it was completely dismantled (down to every bolt), most parts was descaled and everything was cleaned. After that it worked flawlessly for a few months. Boiler pressure is 1.2bar, brew pressure is at 11 bar when extracting. Line pressure is about 4 bar. It takes about 50-55 sec. We have a Cimbali M39 next to it and pulling shots with both machines with the same grind from the same grinder results in two completely different shots. The Cimbali pulls in 22-23sec but the Faema takes 50-55sec. Since the Cimbali produces shots in the optimal time with the same coffee, I think the grinder and its settings are ruled out. I dispensed with an open group and it supplied about the correct amount within the time frame (i don’t quite remember the numbers, but I read in a forum). Could this simply be a worn out pump head? But since it supplies the correct flow rate (ml/s), and the brew pressure it 11 bar, i didn’t suspect this.
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6 Replies
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Adjust the pump relief valve to the proper setting. Or the pump is defective. Have you got a portafilter gauge? Extraction pressure is normally about 8 to 9 bar
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Should I adjust it with open group or blind filter?
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with filter gauge. But if the brew gauge is 11 bar, it should be good. You only get 11 bar if blind.
You’ll notice that when you pull a shot, the gauge will start at 0 and rise as the water pressure increases.
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It could also be the portafilter basket. Use a light to check the holes. And if the E61 head has a worn cam for the valves, it may not be opening fully. Valve stem length too.
You say the pump is showing 11 bar, that’s good. The grind is very difficult to make for 2 different machines unless they have the same basket. But always check the pressure with a basket gauge that is accurate. Sometimes the machine ones are off.
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Remember that each brand of basket may have a different volume, perforation diameter, number of perforations, and shape. There fore amount of grounds and compaction will change between them.
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They have used 2 different pumping systems on this machine. One the built in gauge is direct off the pump discharge. The other is off the solenoid valve regulator. This one will read the head pressure. The other one may not.And therefore Can leak pressure to the boiler. That’s why a asked if you have a filter gauge.
Remove the basket holder and lift the handle. You should see several fine streams. If not streams, but a flow you need to clean the head orifices. A shot should never take more than 25 to 30 seconds to pull. 20 seconds for a resricto
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