Posted Sun Jul 8, 2012, 5:31am Subject: Oscar pressure valve problem
Good day Geekers
I seem to have developed a problem with my old oscar. It has suddenly started releasing a lot of steam from the pressure relief valve just below the pressure stat. My question is thus: Is this indicative of a faulty pressure relief valve or is it that the pressure stat or thermostat are faulty and building up too much steam? How does one determine which is causing the problem?
calblacksmith Moderator Joined: 25 Nov 2007 Posts: 7,774 Location: Riverside, Ca, U.S.A. Expertise: I live coffee
Espresso: ECM Vene. A1, La Cimbali M32 Grinder: Azkoyen Capriccio, Major Vac Pot: 40s era Silex Drip: Msl. Com. brewers Roaster: gave it a try, decided no
Posted Thu Jul 12, 2012, 1:12pm Subject: Re: Oscar pressure valve problem
Without more info, sounds like the Pstat. Pstat has moving parts that wear, the safety valve, just sits there unless you get too high of a pressure which indicates that the heater is not turning off which leads you back to the Pstat.
Is the brew water over temp too? Have you checked with a thermometer? If the water is hot, too hot, the Pstat is the first place to look.
In real life, my name is Wayne P. Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!
Feed the newbs, starve the trolls and above all enjoy what you drink!
Posted Sat Jul 14, 2012, 12:43pm Subject: Re: Oscar pressure valve problem
While I have been in there I decided to strip the machine and discovered the mild steel painted frame is also quite rusted. So I am in the process of repairing this as well.
Anyway thanks for you advice and it appears that you were right. I have decided to replace the safety valve as well as the p-stat while Im at it. I realised after a while that the water was too hot and followed up from there.
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 SEO style postings will be tolerated. SEO related posts will result in immediate ban from CoffeeGeek. 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.