ฝัง
- เผยแพร่เมื่อ 31 ก.ค. 2019
- Solenoid testing was done on an isolated bench power supply along with a fused Cliff QuickTest adapter. Extreme care should be taken with this process if you're not experienced with or equipped for this sort of testing:
Isolated bench power supply: • Tenma 72-1098 Isolated...
Cliff QuickTest: • Cliff Quicktest Review...
Be sure to document the way your valves are installed prior to taking them out of the bracket. Mine had a "1" stamped on the 3-port valve facing away from the bracket. Yours may be different, so take a picture or two before tearing things apart. These valves were removed from my Barista Express machine in an earlier video. Similar valves are used in many espresso machines, these valves are the Olab brand.
There seem to be multiple descriptions of these valves, some say 1-way and 2-way, some say 2-port and 3-port. Basically there's one valve with 2 openings or ports and those 2 ports are normally closed with power off and open when power is applied. The other valve has 3 openings or ports and the right to top path is open with power off and the right-left path is open when power is applied. I switch between the port and way nomenclature in the video, but for clarity:
2-way = 3-port
1-way = 2-port
While it seems possible to clean these valves to restore normal operation, I feel the new SP0020446 solenoid valve assembly and the Ceme solenoid valves are much better than the Olab parts. Seems the Olab valves are prone to this sort of issue, some details below:
/ what_could_be_wrong_wi...
coffeegeek.com/forums/espresso...
It seems that a very thorough cleaning is enough to get these valves operating like new. The 3 port valve had a heavy orange/red deposit in it that was causing the metal slug from moving freely. That seems to be related to the buzzing sound as well, as the slug would vibrate on the partially compressed spring. The 2 port valve seemed to have some granular deposits in it that were easily removed in the citric acid cleaner.
For the cleaning solution, I used my homemade Dezcal-like powder mixed about 3-4 times normal concentration, or about 100mL powder per liter of water. To that I added a shot of dish washing liquid detergent for better cleaning and wetting properties. I would soak the parts for a few hours at a time. Remove and rinse the parts and if needed repeat the soaking cycle.
An ultrasonic cleaner would also be useful for this task. I don't own one or I would have used it. The technique shown should be accessible to anyone as all you need is some of the descaling product you normally use in the machine and a small container to hold the solenoid valve part for cleaning.
Not sure what the root cause of this problem is, whether it's the brand or design of the solenoids or something else. I noticed the noise on and off from when the machine was new. It seems Breville has changed suppliers from Olab to Ceme as the Olab based valve assembly is listed as NLA:
spares.bigwarehouse.com.au/pr...
I found a parts manual on-line and it lists:
Part # Description Usage
SP0013665 SOLENOID VALVE - OLAB 9200H - US Pre PDC1630
SP0020446 SOLENOID VALVE - CEME V397VN1.0P(3/2) VERSION A - US/CA From PDC1630
This page mentions PDC1630 as of July 2017, so that may be the date they changed:
dokumen.tips/documents/the-ba...
All the new photos from on-line vendors show the Ceme valves. That at least points in the direction of a design issue related to the Olab parts. The Olab solenoids look like they are well designed but maybe they've been mis-applied in the Breville espresso machine designs.
You're probably looking at US$250 or more to have this repair done at a shop and that may involve shipping the machine there and back. Breville has a ~$250 flat rate repair charge for parts like this.
So it's well worth the time and effort to do this repair yourself.
Solenoid Block:
www.ereplacementparts.com/sol...
Olab 6000-9000 Magnetic Valve 110/120v Breville Bes870xl Barista Express:
www.ebay.com/i/254196181727
The 240V Ceme part number: SP0020440
Check out the next video where I add indicator lights to show how the solenoids are operated:
• Breville 870XL Solenoi...
Subscribe for more content like this
Comment, rate, share & click the bell icon
And as always, thanks for watching
#breville #bes870 #bes860 #solenoids
My Breville BES870XL will not shut off the water when making the expresso in either the 1 or 2 cups. I tried resetting to the factory settings then when that didn't work I did a manual set. Neither worked. Would my problem be the solenoid?
Breville is not doing enough to make parts available. They have a third party distributorand as far as getting a new solenoid no one is accountable for getting parts made available - and no one is accountable. You, sir, are the only hope to get my Barista express working properly. Your video has given me the info I wanted to to attempt this repair. THANK YOU
You sir are a steely eyed missile man! =) I was unable to pull a shot today, no pressure, and stalled out before any water ran through the head. Steam and hot water worked fine though. the solenoid pack is back ordered and the solenoids individually are expensive and would come from Germany. Neither was/is going to help with my morning espresso! The solenoids appeared to be working fine. So with nothing to lose I pulled the solenoids apart. I found the small orifice in the 3-way valve had an obstruction. I cleared it and soaked the parts in citric acid for a few hours. I cleaned the parts reassembled and fired it up. All appears to be working as good as new now. Thank You - for the instruction!
Hey, just wanted to say i appreciate the video and detail you went into, was a super easy process that looked a bit difficult from the start. Ended up being a piece of cake thanks to you, gave it a good clean and now i have a happy wife again 😊
Thanks for the video. I got the solenoid stuck on my Barista Express (well, in my country, it's branded Catler 8010; it's from 2013). I simplified the procedure a lot. I filled the water tank with water and citric acid (ensuring the citric acid crystals were perfectly dissolved), ran one cup of water through the machine, and let it stand for 12 hours. During these 12 hours, I turned the machine on several times and ran half a cup of water through. The citric acid got to the solenoid valve and dissolved the deposits. Running half a cup of water through the machine replenishes the citric acid where it has to act. The valve got unstuck in about 4 hours, the machine stopped making weird noises, and it has worked fine ever since. BTW, the machine still works perfectly after eleven years - it's unbelievable.
thank you for the level of detail and insight…and for answering questions of random strangers
I had this same noise & found out that I needed to "Decalcify" my machine with Dezcal Packets because vinegar wasn't strong enough to decalcify units now! So Breville recommended I do that procedure twice since the "buzzing sound" was heard by them and I had ZERO Pressure showing up on my gauge but the steamer wand and hot water were working fine. They also recommend that I do the "Clean Me" Tablets twice as well. Before you go and take apart your unit, TRY THIS FIRST! I was SO relieved to find this worked!!
Great series man! Was able to revive my solenoid/valves for the time being until the spares arrive. Don’t have a power supply but was able to knock the sealed valve around enough to dislodge it. The 3 way was very clean on mine. No orange color. Replaced the 3 way backwards causing the hot water and steam to not work. My fault for not documenting. Anyway thanks for taking the plunge for the rest of us.
Thank you Mr. Brown!!!! I have done this cleaning with the valve, after the buzzing noise and that just did the trick. You saved me $200 repair bill. Thanks again.
Hi R Brown,
Great video, very helpful details! I just ordered the solenoid assembly direct from Breville, customer service needed the SP0020444 part number as they couldn't look it up directly. $44.99 with shipping to a U.S. address.
Excellent demonstration, thank you
Thank you, since I couldn't find the part I tried kind of what you just did with your old solenoids. I put 4 cleaning tablets along with pure descaling solution in the water tank (about 1/4 full) and I made it circulate through the machine. Guess what?, all of a sudden the buzzing noise stopped and now both buttons are working like a charm!. They were dirty just like you said and the solution was able to free the debris I guess.
You are really a genius, very knowledgeable !
Another great video, thanks. In the UK the same machine is badged under the brand 'Sage' but still called a Barista Express, Model BES870UK. These run at 240V. I have stripped out the solenoid block and found my solenoids are, like yours, Olab units. The 3 way is labelled Serie 9000, the 2 Way is a Serie 6000. I noticed there is a date stamp on mine below the other codes - 24.04.14 (EU date format ddmmyy, 24th April, 2014) . I cant find the Ceme units rated at 240V to replace these, but Im going to have a go cleaning these valves first. Thanks again for posting this up, its been a great help.
In my case, the pump was making more of a muffled sound. Was still able to froth milk, though. Anyway, I wen through the cleaning cycle using capsules twice, then again with vinegar. That time, it started making THE buzzing sound. I cleaned one last time with a capsule. And that's the end of the story. I am writing this enjoying a perfect latte. Thank you!
I will take your advice and try the pump first (cheapest part I think). thanks for answering my question, it is much appreciated. Thanks again
Thank you for the excellent documentattion of your Breville espresso machine operation and disassembly. All this information is always very useful in the absence of a schematic diagram. You shouldn't need to remove nor disassemble the solenoids to clean their orifice as a periodic cleaning with 50% distilled white vinegar cycled through the lines as part of maintenace should have done the job. Alternately you can use their cleaning "pill" which probably also contains some decalcifier. I had the same problem of solenoid buzzing loudly and watched a video showing the cleaning with vinegar solution, and it solved the problem. Sometimes if I pack the grind too much, I get the buzzing and low pressure at the gauge. So I assume that there must be a flowmeter that keeps sensing the flow. Since the flow is restricted by the dirty line, or blocked orifice, or jammed coffee grind, the controller shuts the solenoid valve off and tries to turn it on again, then senses the flows again and repeats the precess, resulting in a pulsating solenoid, hence the buzzing...?
Help mine issue is that there's no water coming out only out in the to the drip tray.. The sound of the solenoid seems normal.. Same issue when i press for steam , i get steam but also when i close it then again water spills out in the drip tray any suggestions ???
Great video. Am in the process of cleaning my valves now. But I might just order new ones