Posted Mon Aug 9, 2004, 12:07am Subject: Re: Need help adjusting the brew pressure on Livia 90 Auto
I have Bezzera 99 which has the same inners as Livia 90. So I assume they have the same valves for over pressure. The valve in the machine is unfortunately one of the unadjustable ones. There are two ways however: - cut the spring inside so that it has a lesser tension - risky to do it . There is no return back and if you do not cut it very evenly it will make terrible vibration noise. - add some washers into the body.
I have adjusted mine by adding some washers. At the beginning It was set to about 12 bars. If you are pulling doubles it is no problem but pulling double ristrettos is just not possible at these initial settings. Anyway I have mine set to 8,5-9 bar now. It was really difficult to make it water tight with additional washers but it works quite well now. Pulling double ristrettos is so easy. I get that dark colour for 20 secs at least. The taste is much smoother - still not perfect but I am getting to it. With doubles the difference , tastewise , is not that high. However it is just easier to pull doubles now. If you are pulling doubles only , I would say the mod is not that important.
Akin P.S: I do not think it makes a big difference but Bezzeras are having fluid-o-tech pumps. Mine is 70W version.
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.