RobMunro Senior Member Joined: 28 May 2014 Posts: 1 Location: Somerset West, South Africa Expertise: Professional
Posted Wed May 28, 2014, 4:56am Subject: Linea SinglePhase Issues
Hi there I have a Linea 2 group head single phase machine and use it on my mobile unit. It is a great machine but as of late it is failing to keep up with steam as the pressure is dropping. It is extrememly well maintained and I am wondering if there are any ideas out there as to what may be causing the loss of steam.
The loss occurs when we are busy and the pressure drops quickly to between .5 and .85 bar and doesn't recover back to 1.5 unless we wait. This is obviously an issue when busy.
skydragondave Senior Member Joined: 18 Feb 2013 Posts: 167 Location: Ontario, Canada Expertise: Professional
Espresso: Commercial Only Grinder: Commercial Only Roaster: Has Garanti HG5
Posted Wed May 28, 2014, 9:01am Subject: Re: Linea SinglePhase Issues
Are you using softened water? Water usually has an amount of dissolved solids like calcium that if left untreated can build up inside the steam boiler in the form of scale. This scale acts as an insulator to reduce the efficiency of the water heating system. It also eventually plugs passages, valves and pipes to the point that flow of water and steam becomes blocked. This damage is very expensive to correct. So have your water quality checked for carbonate hardness and have a technician evaluate the level of scale in the boiler. There are other possible causes but this is the most common one. Good luck
Posted Wed May 28, 2014, 7:13pm Subject: Re: Linea SinglePhase Issues
Assuming "extremely well maintained" means that the machine is regularly descaled, the issue could be any number of things:
1) Slow heating due low electric voltage 2) Slow heating due to defective heater element 3) Delayed activation or premature deactivation of the heater due to failing pressurestat 4) Too little steam in the steam boiler due to water level being too high 5) Too little steam in the steam boiler due to steam escaping through a leak somewhere 6) Too little steam in the steam boiler due to air not getting released
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.