germantownrob Senior Member Joined: 2 Dec 2007 Posts: 2,043 Location: Philadelphia Expertise: I love coffee
Espresso: Duetto 3, A Dead Oscar Grinder: Vario-W, Preciso w/Esatto,... Drip: Brazen Roaster: Diedrich IR-1, HT B
Posted Thu Mar 29, 2012, 5:05am Subject: Re: Nuova Simonelli Oscar - Brewhead Problem
Coffeenoobie Said:
I let it cool down and adjusted it down a full turn. Now the flushes are back to normal and I will find out tomorrow if my resent channeling problem goes away. What are the signs of the pstat going out?
I leave Oscar on 24/7 so my adjustments are for the machine when it is fully stabilized.. When left on for a long time everything on the machine is much hotter then when letting it warm up for an hour or two, for example the reservoir water temp is around 122f. When I first started playing with adjusting the pstat it took days to find a setting that I liked.
The Sirai has 3 electrical connections you can use. The terminals begin to get a build up of carbon and I had two different types of failures, 1st my connection stayed closed and the boiler kept heating until the pressure valve opened, 2nd connection failed by staying open and the boiler would not heat ( a bang on the side of the machine would get it working but eventually I moved to the third connection and ordered a new pstat). Talking with Jason, a tech at Chris', really felt mt Sirai was defective and it has been awhile since replacing with no problems like before.
Coffeenoobie Senior Member Joined: 11 Dec 2011 Posts: 2,372 Location: PNW Expertise: I like coffee
Espresso: N S Oscar Grinder: Vario W
Posted Thu Mar 29, 2012, 11:13am Subject: Re: Nuova Simonelli Oscar - Brewhead Problem
I have left it on all weekend before and this has not happened. So, I can try another electrical connection inside the pstat and see if it is more stable?
Coffeenoobie
Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder. My coffee treasure map... Click Here (maps.google.com)
germantownrob Senior Member Joined: 2 Dec 2007 Posts: 2,043 Location: Philadelphia Expertise: I love coffee
Espresso: Duetto 3, A Dead Oscar Grinder: Vario-W, Preciso w/Esatto,... Drip: Brazen Roaster: Diedrich IR-1, HT B
Posted Thu Mar 29, 2012, 7:59pm Subject: Re: Nuova Simonelli Oscar - Brewhead Problem
Coffeenoobie Said:
I have left it on all weekend before and this has not happened. So, I can try another electrical connection inside the pstat and see if it is more stable?
You could move the wires to the next connection, you could also try and clean up the carbon deposits with some fine grit emery cloth. A new connection can't hurt. Jason at Chris' actually thought my Sirai was faulty, it is a commercial Pstat and should have lasted much longer then mine did.
Coffeenoobie Said:
For the cost of a Pstat should I just replace it with a pid?
You could. If you will keep Oscar for a long time and can do the work you would not ever have to deal with a pstat or the snap sound it makes opening and closing. Adjustments between personal use and party use are just a matter of raising the temp on the pid. I don't know much about pids but I believe the dead band of on and off is much tighter using one so less temp swing in the boiler.
Coffeenoobie Senior Member Joined: 11 Dec 2011 Posts: 2,372 Location: PNW Expertise: I like coffee
Espresso: N S Oscar Grinder: Vario W
Posted Thu Mar 29, 2012, 11:23pm Subject: Re: Nuova Simonelli Oscar - Brewhead Problem
It seems like it starts acting hot at about 8 hours, at 4 hours it seemed fine. I feel sure I left it on a full weekend but it may have been so early on that I did not notice how hot it was. I will open the pstat and take a look at it.
Coffeenoobie
Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder. My coffee treasure map... Click Here (maps.google.com)
Coffeenoobie Senior Member Joined: 11 Dec 2011 Posts: 2,372 Location: PNW Expertise: I like coffee
Espresso: N S Oscar Grinder: Vario W
Posted Fri Mar 30, 2012, 12:41pm Subject: Re: Nuova Simonelli Oscar - Brewhead Problem
I don't see my self changing machines until or unless I can't fix this one anymore or I hit the mega millions for half a billion this weekend. I will just tinker with this one till I hit the lotto. Then I will build a house with a real espresso bar....
Coffeenoobie
Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder. My coffee treasure map... Click Here (maps.google.com)
germantownrob Senior Member Joined: 2 Dec 2007 Posts: 2,043 Location: Philadelphia Expertise: I love coffee
Espresso: Duetto 3, A Dead Oscar Grinder: Vario-W, Preciso w/Esatto,... Drip: Brazen Roaster: Diedrich IR-1, HT B
Posted Fri Mar 30, 2012, 2:54pm Subject: Re: Nuova Simonelli Oscar - Brewhead Problem
Coffeenoobie Said:
It seems like it starts acting hot at about 8 hours, at 4 hours it seemed fine. I feel sure I left it on a full weekend but it may have been so early on that I did not notice how hot it was. I will open the pstat and take a look at it.
Now that you mention it I will occasionally have to do a long flush after a long sit, not always but sometimes.
Coffeenoobie Said:
I don't see my self changing machines until or unless I can't fix this one anymore or I hit the mega millions for half a billion this weekend. I will just tinker with this one till I hit the lotto. Then I will build a house with a real espresso bar....
LOL. I pretty much know what machine I want next but feel no pressure to upgrade. Oscar has kept me in good espresso and the upgrade I make will be to a commercial HX, if it came along used at the right price I will jump on it but new might just have to wait until I remodel the kitchen when the kids get a bit older.
The speedster to me is the most beautiful machine and if I had this machine I would design my kitchen around it, lol. That machine should be in a spot where it can be viewed 360 degrees.
Coffeenoobie Senior Member Joined: 11 Dec 2011 Posts: 2,372 Location: PNW Expertise: I like coffee
Espresso: N S Oscar Grinder: Vario W
Posted Fri Mar 30, 2012, 7:55pm Subject: Re: Nuova Simonelli Oscar - Brewhead Problem
yes the speedster is cute but really too much money for me, and I am not good enough to taste the difference between a 2-3k machine and 6k machine.
The Jr is nice. It looks good. Happily, I am still happy with what I have. Of course I have not been to the show yet, the shinys might blind me with their beauty.
Coffeenoobie
Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder. My coffee treasure map... Click Here (maps.google.com)
Symbols: = New Posts since your last visit = No New Posts since last visit = Newest post
Forum Rules: No profanity, illegal acts or personal attacks will be tolerated in these discussion boards. No commercial posting of any nature will be tolerated; only private sales by private individuals, in the "Buy and Sell" forum. No cross posting allowed - do not post your topic to more than one forum, nor repost a topic to the same forum. Who Can Read The Forum? Anyone can read posts in these discussion boards. Who Can Post New Topics? Any registered CoffeeGeek member can post new topics. Who Can Post Replies? Any registered CoffeeGeek member can post replies. Can Photos be posted? Anyone can post photos in their new topics or replies. Who can change or delete posts? Any CoffeeGeek member can edit their own posts. Only moderators can delete posts. Probationary Period: If you are a new signup for CoffeeGeek, you cannot promote, endorse, criticise or otherwise post an unsolicited endorsement for any company, product or service in your first five postings.
= No New Posts since last visit 