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Classic Pressure?

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  • Re: Classic Pressure?

    Finally some good shots -- that Sparky bloke is brilliant.  Thank you so much! 

    Originally posted by 3B2F20252D214C0 link=1143118905/115#115 date=1298859799
    Ive adjusted the opv so that Im getting 100ml in 30 seconds, down from about 130ml out of the factory. Perhaps Ive completely misunderstood the above posts, but I found tightening (turning the opv clockwise) reduced the flow, and loosening (counter-clockwise) increased it.
    So I had the same experience (with a one month old Gaggia Classic).  Didnt have a blind filter, so just did the 270 degree turn blindly.  Now that I have one, I found I had to rotate it clockwise to get to 100ml in 30 seconds.  Im not sure how much, because I kept rotating it counter clockwise and I kept getting more and more water (up to 200ml/30 sec).  Once I went the other way, everything turned out well.  Maybe down under things are reverse, just like with the water going down the drain. 

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    • Re: Classic Pressure?

      just thought id post the documentation for anyone with an invensys pump, had to trawl some other forums to get the info seeing as noone has posted it on this forum.

      spanglefish.com/avicennassolution/documents/Parts%20List/CP03A-120V.pdf

      consensus of other posts around the net is that flow rate is 125ml/30sec for 9 BAR for the invensys cp3a pump (but its actually 240cc/60sec if you look closely at the graph above), and 100ml/30 sec for the ulka.

      hope this saves some people some time!

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