Posted Sun Dec 1, 2013, 9:03am Subject: Saeco Classico will not prime
This saeco classico has been sitting unused for a couple years. I tried to prime it but no water flowed. I took off the the top plate and tried to force water into the pump with the pump running and the water would not go in the pump. The pump is humming when switched on. Is the pump shot? Is there a way to descale the pump if I cannot get solution to go in? I can still get a little steam, but nothing flows through the brewhead.
D4F Senior Member Joined: 15 Mar 2012 Posts: 1,811 Location: USA Expertise: I like coffee
Espresso: Gaggia Classic PID Grinder: Preciso
Posted Sun Dec 1, 2013, 2:08pm Subject: Re: Saeco Classico will not prime
Open the steam wand wide and run the pump. That eliminates the group from the equation. I can't tell from the description whether the pump is not working or if the group is plugged and will not allow water or air in.
Posted Sun Dec 1, 2013, 3:36pm Subject: Re: Saeco Classico will not prime
I opened the steam wand and ran the pump. The pump sounds like it is running but no water flow. I tried to force water into the pump using a baster inserted into the pump feeder tube. Then I removed the baster bulb and blew with my mouth, still no results. It seems to be completely plugged somewhere. IM ready to start disassembling, any suggestions?
Posted Mon Dec 2, 2013, 2:41pm Subject: Re: Saeco Classico will not prime
The website was great info...gave me some confidence for a pump teardown. After a descaler bath and a few adjustments I was able to get water flow for the steamer but not enough pressure to make espresso. I guess I will have to be happy with chai chocolate lattes until I can gather the funds for a new pump. Thanks for your help.
Posted Tue Dec 3, 2013, 11:18am Subject: Re: Saeco Classico will not prime
After some online searches, I read that if there is good flow through the wand then my problem is not the pump. I was reluctant to tear down the boiler because of all the wiring and connections but it was a slow night and I had a fix it or trash it attitude. I used the ulkapumprepair.blogspot.com as a guide. After poking around with a wire in the disassembled boiler I found that the valve spring at the base of the boiler tube was frozen shut. I couldnt remove the retainer and i didnt want to break it so I just soaked the bottom boiler piece in diluted vinegar (this probably is not recommended). After about 30 minutes the valve came loose. I had some reassembly problems which required backtracking, including a leaking steam wand connector at the boiler, fixed by doubling up the o-ring. I have a new appreciation for the inner workings and a better understanding of the importance of regular descaling. Anyhow all is well now, I got my machine working again and all it cost me was about 8 hours of reading and labor (and backtracking) and a couple o-rings. Makes me want to look around for some expensive castoff machines which the owners are afraid to take apart.
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