zazz Senior Member Joined: 5 Jul 2012 Posts: 20 Location: GA Expertise: I love coffee
Posted Mon Jul 9, 2012, 5:36am Subject: Re: Gaggia OWC - (Very Old) Old White Coffee - new mods
thanks for the info. what size tap did you use to relocate the water inlet fitting? For plugging the existing hole did you use a brass plug?
I am still cleaning up the boiler, the brown coating has still not come off fully. still a small amount of scaling. I will be putting it back together today to see how it runs.
zazz Senior Member Joined: 5 Jul 2012 Posts: 20 Location: GA Expertise: I love coffee
Posted Mon Jul 9, 2012, 9:36am Subject: Re: Gaggia OWC - (Very Old) Old White Coffee - new mods
Thanks again. I put it back together and made a dispersion plate out of aluminum and the shower screen works much better, but does not trickle like yours, I will to drill out the hole once I get a chance. Tested it just to see and no channeling, just comes out faster
Remember I also have a dimmer on the pump. That pump in the OWC is a brutal beast and puts out much higher flow than a lot of newer pumps. I leave it running on about 1/3 to 1/2 power --- so that is another reason why my shower screen dispersion looks so nice in the video. It also saves on your ears - that OWC pump is LOUD. Much easier to listen to when running on the dimmer at half.
zazz Senior Member Joined: 5 Jul 2012 Posts: 20 Location: GA Expertise: I love coffee
Posted Thu Jul 12, 2012, 8:08am Subject: Re: Gaggia OWC - (Very Old) Old White Coffee - new mods
so far i've done the dispersion disk, drilled out the exit hole, and added a dimmer.
I tried it before with the dimmer and the pump goes really slow, it seems that the water comes out of the shower screen for a bit then is either sucked back in or just stops. It will start up eventually but sometimes will gurgle (this is at the dimmer about half way). I cannot get a steady flow every time if the pump is less than full power. I have not tried it after drilling out the hole, will try that today. Any ideas?
ribozymer Senior Member Joined: 2 Jan 2011 Posts: 15 Location: San Francisco, CA Expertise: Just starting
Grinder: Rocky Rancilio (working on...
Posted Thu Mar 7, 2013, 12:50pm Subject: Re: Gaggia OWC - (Very Old) Old White Coffee - new mods
I was looking at options of putting in a permanent temp and pressure gauge on the same machine. Any clue on what the hex nut on the bottom of the 3 way solenoid is for? Part #10 in the diagram? I have a suspicion I might be able to thread in a dual temp and pressure gauge after backing out that nut.
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