Скачать с ютуб Cleaning Solenoid Valves from a Breville/Sage Barista Express в хорошем качестве

Cleaning Solenoid Valves from a Breville/Sage Barista Express

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 Variable AC Po...   Cliff QuickTest:    • Cliff Quicktest Review and Test   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_with_this_solenoid   http://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: https://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: https://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: https://www.ereplacementparts.com/sol... Olab 6000-9000 Magnetic Valve 110/120v Breville Bes870xl Barista Express: https://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 Solenoid Indicator Lig...   Subscribe for more content like this Comment, rate, share & click the bell icon And as always, thanks for watching #breville #bes870 #bes860 #solenoids