Our Valued Sponsor
OpinionsConsumer ReviewsGuides and How TosCoffeeGeek ReviewsResourcesForums
Espresso: Questions and Answers
Pressure release problems with my Cellini
Green Unroasted Coffee
Free shipping. Save 15% on variety pack, use 'variety' at checkout
www.madbeanscoffee
 
Not Logged in: Log In to Postlog in
New Topics updated topics   New Posts new posts   Unanswered Posts new unanswered  
Search Discussion Board search   Discussion Board FAQ faq   Signup sign up  
Discussions > Espresso > Q and A > Pressure release...  
view previous topic | view next topic | view all topics
Author Messages
Continuities
Senior Member


Joined: 31 Aug 2011
Posts: 15
Location: Ottawa, Canada
Expertise: I love coffee

Espresso: Rocket Cellini Professionale
Grinder: Compak K-10 Pro Barista
Posted Wed Aug 29, 2012, 3:25pm
Subject: Pressure release problems with my Cellini
 

Hey folks!

A few days ago, my Rocket Cellini Professionale started making strange "moaning" noises when pulling a shot.
I also noticed that the brew pressure wasn't dropping past about 5 bar afterwards. After a few backflushes, the weird sound has stopped, but the pressure is still not completely clearing. Now, I'm a fairly technical person, but I've never so much as looked inside my Cellini. I'd rather solve this issue myself than send the machine off for repairs, and I'm hoping that someone on here might have a clue as to what the problem may be. I'm guessing that my solenoid may be clogged or something, but that's about as far as I've gotten on my own.

Anyone have any ideas?

Thanks so much!

- Michael
back to top
 View Profile Link to this post
CoffeeMills
Senior Member
CoffeeMills
Joined: 21 Feb 2012
Posts: 32
Location: USA, Canada
Expertise: Professional

Espresso: la Pavoni Professional
Grinder: Mazzer Mini
Drip: Gravity Cone
Roaster: 49TH  //
Posted Wed Aug 29, 2012, 3:45pm
Subject: Re: Pressure release problems with my Cellini
 

Hi.
Sound like a dying water pump.  They moan and lower shot pressure dramatically upon dying.
These are easy to replace.  However, consider the pressure adjustments needed after installing.
That's when I'd take a Rocket to a professional espresso technician.  It could be a clogged valve, so continue to back flush until it clears.  A fading pump indicates other problems to come.  A professional can fix all problems quickly vs. trying to solve a single issue for days.  If desperate, I'd be happy to walk though the inside functions of your machine.

Hope this helps,

lacoffeemills@gmail.com

 
Coffee Mills
back to top
 View Profile Link to this post
Continuities
Senior Member


Joined: 31 Aug 2011
Posts: 15
Location: Ottawa, Canada
Expertise: I love coffee

Espresso: Rocket Cellini Professionale
Grinder: Compak K-10 Pro Barista
Posted Wed Aug 29, 2012, 4:12pm
Subject: Re: Pressure release problems with my Cellini
 

Thanks for the reply!

Shot pressure seems alright (unless the gauge is wrong), it's just not clearing completely after I finish the shot. Usually around 4 or 5 bar is still showing on the gauge. I really hope the pump isn't going, as the machine is only a little over 6 months old.

Thanks again,

- Michael

EDIT: While we're at it, do you know the proper technique for emptying the machine of water? There's nothing in the manual about it, and I'd rather not carry around a full boiler if I have to take it in for maintainence.
back to top
 View Profile Link to this post
frcn
Senior Member
frcn
Joined: 23 Dec 2001
Posts: 3,427
Location: Northern California
Expertise: Professional

Espresso: Vibiemme Domobar Double
Grinder: Mazzer Kony, Baratza...
Vac Pot: Hario, 2 Cory pots, 1 Cory...
Drip: Behmor Brazen, Bunn A10 mod...
Roaster: computer controlled Hottop,...
Posted Wed Aug 29, 2012, 7:35pm
Subject: Re: Pressure release problems with my Cellini
 

To drain boiler:
- Open hot water wand
- remove tip of steam wand
- place vessel under hot water spigot
- apply compressed air to steam wand. use just enough pressure to close anti-vacuum valve.
the pressure will blow the water out of teh boiler and through the hot water spigot.

 
Visit My Website
www.EspressoMyEspresso.com
back to top
 View Profile Visit website Link to this post
frcn
Senior Member
frcn
Joined: 23 Dec 2001
Posts: 3,427
Location: Northern California
Expertise: Professional

Espresso: Vibiemme Domobar Double
Grinder: Mazzer Kony, Baratza...
Vac Pot: Hario, 2 Cory pots, 1 Cory...
Drip: Behmor Brazen, Bunn A10 mod...
Roaster: computer controlled Hottop,...
Posted Wed Aug 29, 2012, 9:40pm
Subject: Re: Pressure release problems with my Cellini
 

You might want to open teh group and check it out. Crud, broken springs, worn inner seals and the like can cause problems. see my illustrated how-to article:
Overhauling and Lubricating the E-61 Group

 
Visit My Website
www.EspressoMyEspresso.com
back to top
 View Profile Visit website Link to this post
calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,864
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 Aug 30, 2012, 5:47am
Subject: Re: Pressure release problems with my Cellini
 

I really don't think it is a pump going bad, you might have a dirty 3 way valve or there may be issues with the BG. For the most part, when you still have pressure on the basket after the end of a shot, you are not bleeding the pressure off and out of the BG, and thus, my first look is in the 3 way and associated plumbing. These are not vastly complicated machines but some people are not comfortable digging around inside the machine either.

 
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!
back to top
 View Profile Visit website Link to this post
Continuities
Senior Member


Joined: 31 Aug 2011
Posts: 15
Location: Ottawa, Canada
Expertise: I love coffee

Espresso: Rocket Cellini Professionale
Grinder: Compak K-10 Pro Barista
Posted Thu Aug 30, 2012, 11:35am
Subject: Re: Pressure release problems with my Cellini
 

Thanks for the input, everyone!

Guess I'll bite the bullet and get my hands into the machine this weekend.
Does anyone know of a good labeled diagram for HX internals? I'm sure I'll be able to figure it out, but having a reference would be good for the confidence.
I'm a little surprised that this stuff isn't in the owner's manual.
back to top
 View Profile Link to this post
SStones
Senior Member
SStones
Joined: 24 Nov 2012
Posts: 477
Location: Canada
Expertise: Professional

Espresso: Giga 5, ECM Giotto, Rocket...
Grinder: Anfim Milano-Best
Vac Pot: No  :(
Drip: Some $30 thing from Walmart
Roaster: I buy pre-roasted.
Posted Sat Nov 24, 2012, 11:14pm
Subject: Re: Pressure release problems with my Cellini
 

Well crap, I'm three months late but maybe someone will see this in the future with their own Cellini problem...
If your brew pressure gauge isn't returning to zero with the pump stopped and the control lever down, then there's pressure at the pump outlet.
Either your pump is running on after the control handle has allowed the brew inlet valve to close (The upper valve in the brew head), and you need to adjust the pump-switch behind the handle a little further away from the cam...  Or your machine is plumbed in and your line pressure is overcoming the pump and pressurising the brew circuit.
Or..
It is possible the gauge is wrong.
back to top
 View Profile Link to this post
view previous topic | view next topic | view all topics
Discussions > Espresso > Q and A > Pressure release...  
New Topics updated topics   New Posts new posts   Unanswered Posts new unanswered     Search Discussion Board search   Discussion Board FAQ faq   Signup sign up  
Not Logged in: Log In to Postlog in
Discussions Quick Jump:
Symbols: New Posts= New Posts since your last visit      No New Posts= No New Posts since last visit     Go to most recent post= 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.
Donate to Coffee Kids
Coffee Kids works with farming communities around the world, improving lives. Donate today.
www.coffeekids.org
Home | Opinions | Consumer Reviews | Guides & How Tos | CoffeeGeek Reviews | Resources | Forums | Contact Us
CoffeeGeek.com, CoffeeGeek, and Coffee Geek, along with all associated content & images are copyright ©2000-2014 by Mark Prince, all rights reserved, unless otherwise indicated. Content, code, and images may not be reused without permission. Usage of this website signifies agreement with our Terms and Conditions. (0.25875711441)
Privacy Policy | Copyright Info | Terms and Conditions | CoffeeGeek Advertisers | RSS | Find us on Google+