Faema C85 Pump Pressure
David6FL
adjusting the OPV with no change in pressure. I turned the regulating
screw both in and out with the pressure staying at 13 BAR. I
understand there is a secondary pressure adjustment on the water
distribution valve. Has anyone tried adjusting this valve. If so
what were the results?
frank
not working.
There are 2 different configurations for the OPV and water
distribution valves. I have restored machines with each of the
setups, so I can probably help. Basically, I would not suggest trying
to alter brew pressure with the adjustments on the water distribution
valves. One adjusts the flow rate into the machine and the other is a
safety valve that should be set to approx 12 bar. I had to replace my
OPV because it was broken. Yours might be missing the spring, which
would explain why its not adjusting the pressure. Have you tried
taking it apart and cleaning it? It's also possible that some scale
is keeping it from closing.
David C. Hallam
and found the SS shuttle stuck. A couple of raps with a small brass
hammer got it out. I polished it with some fine steel wool and gently
removed the small amount of corrosion in the brass valve body. I
lubricated the O ring with some waterproof silicone grease and
reassembled the valve.
I am now able to set the pump pressure to 9 BAR without any problem.
--
There are four boxes to use in defense of Liberty:
SOAP, BALLOT, JURY AND AMMO. Please use in that order.
VOTE for REAL CHANGE in 2010, 2012 and 2014.
frank
your machine. I think I have it set so that everyone can post
pictures.
Darren Tidwell
On the OPV, do you have an picture of the disassembled OPV to make sure I have it assembled correctly? I.e, what goes where? I thought I had it correct, but never could get a high enough pressure.
I temporarily removed the faema opv before the pump and installed a fluid-o-tech opv on the outlet of the pump, with a silicone tubing tied to the 3-way tube. I was able to set it to 9 bar, but since there is always positive pressure, there was water flowing in the silicone tube all the time.
If I could get a replacement or fix my opv, I'd be in business.
I have a pump pressure gauge that I hope to hook up, but , need an adapter from bpst 1/4 flare to 1/4 non flare as my extra capillary tube in non-flare. Wish home-depot had this kind of part!
Darren
frank
http://i106.photobucket.com/albums/m248/joetrisman/P9161152.jpg
It's a very intuitive design. If you find that you need to replace
it, there are many options, depending on how you want to hook it up.
I used this one to replace mine: http://www.cafeparts.com/productDetail1.asp?ItemID=50921.
It works very well and is very adjustable, but you wont be able to put
it in the same position as the old one without several adapters.
How much positive pressure are you getting at the pump outlet when the
pump is not engaged? I don't think you should get enough to open the
OPV.
Also, you probably found this already, but this guy has a great
restoration log:
http://www.homeroasters.org/php/forum/viewthread.php?thread_id=341&pid=2463#post_2463
David C. Hallam
The shuttle or plunger is not undercut as is the one in the picture and
there is a plastic spool that goes into the OPV valve before you put the
part with the plunger on. I didn't take any pictures when I reassembled
but would estimate it is about 1' long.
--
frank
that they made these machines. The first Compact that I restored had
a completely different OPV than yours. I'll see if I can find the
pictures from the most recent one, which had one similar to yours.
Have you unhooked the outlet to yours to see when it opens?
On Dec 8, 4:30 pm, "David C. Hallam" <dhal...@knology.net> wrote:
> The OPV valve in mine is a little different than one in the picture.
> The shuttle or plunger is not undercut as is the one in the picture and
> there is a plastic spool that goes into the OPV valve before you put the
> part with the plunger on. I didn't take any pictures when I reassembled
> but would estimate it is about 1' long.
>
> On 12/8/2010 4:45 PM, frank wrote:
>
>
>
> > Here is a picture of one of the styles of OPV.
> >http://i106.photobucket.com/albums/m248/joetrisman/P9161152.jpg
> > It's a very intuitive design. If you find that you need to replace
> > it, there are many options, depending on how you want to hook it up.
> > I used this one to replace mine:http://www.cafeparts.com/productDetail1.asp?ItemID=50921.
> > It works very well and is very adjustable, but you wont be able to put
> > it in the same position as the old one without several adapters.
>
> > How much positive pressure are you getting at the pump outlet when the
> > pump is not engaged? I don't think you should get enough to open the
> > OPV.
>
> > Also, you probably found this already, but this guy has a great
> > restoration log:
David C. Hallam
pressure valve in the water distribution valve is not opening when I
pull a shot. Before, there was a steady stream of water in the drain.
I have attached a picture of my machine.
David C. Hallam
She likes the flavored coffees, particularly chocolate raspberry. We
have to keep two coffee bean grinders in addition to the espresso
grinder. We also have two regular coffee pots, one for regular and one
for flavored. None of our friends like espresso either, even the
Italian ones. If they do drink espresso, they make it with a stove top pot.
One good thing about having Italian friends is that they make their own
grappa. The only way to get started in the morning is a double espresso
and shot of grappa. I got hooked on that while living in Italy.
I have thought about making my own grappa but making wine just to
make grappa is just too much trouble. Getting good wine grapes in FL is
not the easiest job in the world.
On 12/8/2010 5:42 PM, frank wrote:
frank
of my family and friends will drink sugery lattes.
+1 on the grappa.
David: The valve on the water distribution valve should not open
during a shot unless you get to >12 bar. It's a good thing that it
doesn't open since you adjusted the pressure down to ~9 bar. It's
basically a safety valve that keeps the machine from being damages
during warm up, when very high pressures can build up in the pipes due
to the expansion of water. Great job on the restoration. I posted a
couple pictures of my machine with the pressure gauge (on the top) and
the pressure adjustment knob (to the left of the machine).
David C. Hallam
they are not up to the job and keep breaking. They seem to last about a
year before they break. I had a friend of mine who lives in Milano get
a couple of them for me, but they have now both broken. I hate to ask
him again. I found that the Faema distributor in CT has them but has a
$25 minimum purchase.
On 12/9/2010 11:51 AM, frank wrote:
> I'm also the only one that likes espresso in my house. However, some
> of my family and friends will drink sugery lattes.
>
> +1 on the grappa.
>
> David: The valve on the water distribution valve should not open
> during a shot unless you get to>12 bar. It's a good thing that it
> doesn't open since you adjusted the pressure down to ~9 bar. It's
> basically a safety valve that keeps the machine from being damages
> during warm up, when very high pressures can build up in the pipes due
> to the expansion of water. Great job on the restoration. I posted a
> couple pictures of my machine with the pressure gauge (on the top) and
> the pressure adjustment knob (to the left of the machine).
David C. Hallam
KNOB, not the valve itself. Sorry about that.
Darren Tidwell
I am about to place another parts order and can get them for about $6.50 each and can add that to my order. Shipping in a padded envelope shouldn't be but $1 or so.
I am the only repair guy in my town, so I see some interesting stuff from time to time. The Compact S has been on my bench for a while and will be my espresso cart machine. Glad I have a wholesale acct with some places!
Let me know if you need any other parts, i can get most items for this machine. I have a new switch and other doo-dads on order, including portafilter.
Oh, if you are interested in a swapping your cappucinatore to a steam wand, I removed mine and added an Astoria steam assembly with an articulating steam wand for about $60-$65 with two hole and a 4 hole tips.. It tucks nicely and isn't too long. I can put the steam wand in 20-32oz jug and set it on the tray, no prob.
Darren
Lake Jackson, TX
frank
(cafeparts.com and espressoparts.com both have them). However, it
appears that sreweb.com may have them. Are you in the US or abroad?