Gaggia_guy87 Senior Member Joined: 15 Dec 2013 Posts: 2 Location: Montreal Expertise: I love coffee
Posted Sun Dec 15, 2013, 3:05pm Subject: Pump questions???
i bought few weeks ago a used Gaggia Evolution from some women on kijiji. She said that she got it 3 years ago as a gift and rarely used it. When i arrived at home i've plugged it in and find out that the group was completely jammed with calcium and coffee. So i opened up the whole thing and clean it. Right now, the boiler and the group are completely clean and functional but I still cannot get a good shot from the machine. However, i've noticed that the pump, even though it seems to work well, is quite noisy comparing to my friend's machine. My pump makes a quite loud and seems to knock on something while it vibrates but i've checked it and tried to replace it on it mount, i even grabbed it with my fingers while it was running to be sure it wasn't knocking on something and still, didn't change the sound.
So, i've checked in my friend's machine to see his pump (he has a Gaggia Evolution as well), and saw that he has the Orange Pump (CP3A 52W 120V/60Hz). His machine makes a certain noise but it's not annoying , it's a nice smooth rattle. I have the Ulka EAX5 52W 120V/60Hz. And by searching on the web i've found out that the Evolution come with the Ulka EP5.
So... my questions are... Does someone knows the difference between those pumps? Which one is better? Is the EAX5 is supposed to be louder than the CP3A?
P.S. I Saw on my pump that it is 6 years old... it was made in 07. Is it old?
D4F Senior Member Joined: 15 Mar 2012 Posts: 1,870 Location: USA Expertise: I like coffee
Espresso: Gaggia Classic PID Grinder: Preciso
Posted Tue Dec 17, 2013, 5:34pm Subject: Re: Pump questions???
My post may have been unclear. Usually if the steam wand is open some water may still come out the group. I was asking for total water out of both together in 15 seconds. If you meant it that way, that is 265 ml out in 15 seconds. Still if those are individual runs, the volume is not bad. Total out for a pump should be about 150 - 160 ml/15sec. 600ml/min plus.
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