Need help Olympia Cremina hydraulics redesign
-
- Posts: 56
- Joined: 3 years ago
-
- Team HB
- Posts: 3735
- Joined: 5 years ago
That will dribble on your countertop. Remember, once the anti-vac closes, all the air is out of the machine, the gas in there is water vapour. When it cools back down, the anti-vac will open and draw air back in that will rise through the heavier water vapour, the water vapour in that tube will condense back to water liquid and run downhill... Probably just barely enough to over-flow the copper cup.
Is there a way to put in a taller anti-vac with a barbed fitting on it so you can still have it high up but aim the spitting away from all electrical stuff with a silicone tube?
Is there a way to put in a taller anti-vac with a barbed fitting on it so you can still have it high up but aim the spitting away from all electrical stuff with a silicone tube?
-
- Posts: 181
- Joined: 3 years ago
The new Cremina's have the vacuum breaker in the boiler cap, you can buy just the cap and it is a direct fit on older machines. https://www.cerinicoffee.com/products/o ... tic-100450
I'd think that where you intend to install it, the tube leading to the vacuum breaker will fill with steam which will condense to water and be trapped in the bottom of the U, waiting to be blown out next time. It will work but also fill the case with steam and water, the frames of those machines are prone to rusting.
I'd think that where you intend to install it, the tube leading to the vacuum breaker will fill with steam which will condense to water and be trapped in the bottom of the U, waiting to be blown out next time. It will work but also fill the case with steam and water, the frames of those machines are prone to rusting.
LMWDP #718
- civ
- Posts: 1148
- Joined: 17 years ago
Hello:
It allows air to flow in (to avoid a vacuum) and as the boiler heats up, the steam pressure (which is always above the water line) seals it.
See: https://coffeetechniciansguild.org/blog ... um-breaker
Best,
CIV
An anti-vacuum valve has to be above the boiler's maximum water level.giboja wrote: ... trying to fit anti vacuum valve ...
It allows air to flow in (to avoid a vacuum) and as the boiler heats up, the steam pressure (which is always above the water line) seals it.
See: https://coffeetechniciansguild.org/blog ... um-breaker
Best,
CIV
-
- Posts: 56
- Joined: 3 years ago
New cap from Olympia is waaaay too expensive.NicoNYC wrote:The new Cremina's have the vacuum breaker in the boiler cap, you can buy just the cap and it is a direct fit on older machines. https://www.cerinicoffee.com/products/o ... tic-100450
I'd think that where you intend to install it, the tube leading to the vacuum breaker will fill with steam which will condense to water and be trapped in the bottom of the U, waiting to be blown out next time. It will work but also fill the case with steam and water, the frames of those machines are prone to rusting.
Originally, on that same position is pressurestat.
If that condensation occurs while cooling down, that tube and below will be filled with water?
Still would be functional but I find it unlikely.
-
- Posts: 56
- Joined: 3 years ago
Can't find barbed fitting vacuum breaker in this size locally but that will be best solution as NO water will come close to wires.JRising wrote:That will dribble on your countertop. Remember, once the anti-vac closes, all the air is out of the machine, the gas in there is water vapour. When it cools back down, the anti-vac will open and draw air back in that will rise through the heavier water vapour, the water vapour in that tube will condense back to water liquid and run downhill... Probably just barely enough to over-flow the copper cup.
Is there a way to put in a taller anti-vac with a barbed fitting on it so you can still have it high up but aim the spitting away from all electrical stuff with a silicone tube?
I find this solution on image below simpliest but not sure if valve will operate correctly rotated?
If I go with smaller cup socket will not fit inside for tightening..
- Jeff
- Team HB
- Posts: 6941
- Joined: 19 years ago
It really needs to be vertical. It's a gravity-operated valve. At an angle it may work when new, but get sticky as it gets dirty with use or deposits start to form.
I'd get one with a hose barb. Even with a cup, they spit and spatter all over. With a pressurestat right there, that's even worse.
I'd get one with a hose barb. Even with a cup, they spit and spatter all over. With a pressurestat right there, that's even worse.
-
- Team HB
- Posts: 3735
- Joined: 5 years ago
Would a second small hole through the top of the machine horrify you? You could have the anti-vac on a short extension vertical above that T-fitting if there were a hole in the top for it to breathe through,
-
- Posts: 56
- Joined: 3 years ago
Actually, I was thinking about making new top cover with opening for pressure gauge but as one have to open machine to adjust the pressure anyway pressure gauge can be inside indeed.
I think the boiler can be drilled and tapped to put fitting as well..... maybe?
I think the boiler can be drilled and tapped to put fitting as well..... maybe?