Adding preinfusion to commercial espresso machine
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- Posts: 85
- Joined: 7 years ago
Any suggestions on how to modify single group portion control commercial machine to do pre infusion.
Thank you.
Thank you.
- cannonfodder
- Team HB
- Posts: 10497
- Joined: 19 years ago
Single group just add an adjustable delay on make relay inline with the pump. It will pre infuse under mains pressure then the relay will kick on the pump. Did it on a couple machines. My 2 group ran on 220 so finding a relay was a bit more difficult. My Elektra is 110v so relay were easy to get. Think I picked that one up at Grainger.
Dave Stephens
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- Posts: 85
- Joined: 7 years ago
- AssafL
- Posts: 2588
- Joined: 14 years ago
Yes - it looks like it should work. And you get a fancy LED display.
Scraping away (slowly) at the tyranny of biases and dogma.
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- Posts: 85
- Joined: 7 years ago
Got the relay,but can't get it going.Turns on for half second then goes into pause (programmable), then turns on continuously.Hara be leben.