Our Valued Sponsor
OpinionsConsumer ReviewsGuides and How TosCoffeeGeek ReviewsResourcesForums
Espresso: Espresso Machines
Pump damage with too much pressure?
Learn @seattlecoffeegear
Learn all about coffee, watch videos, read how-to articles.
www.seattlecoffeegear.com
 
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 > Machines > Pump damage with...  
view previous topic | view next topic | view all topics
Author Messages
romanhands
Senior Member


Joined: 3 Nov 2013
Posts: 13
Location: south dakot
Expertise: Just starting

Espresso: proteo grande
Grinder: antique wooden hand grinder
Posted Wed Nov 20, 2013, 1:01pm
Subject: Pump damage with too much pressure?
 

i have a proteo grande- likely mid 90's.  like new.
i'm new to the home brew world and am learning how to pull a good shot.
question:  if i overpack the filter and/or ground is TOO fine, will this cause damage to the pump in the machine?

the reason i ask... as i was experimenting this morning, i could tell immediately that i had either tamped it too much and/or grinds were too fine.
i let it go anyway and it was just drip-drip-drip-drip for about 45 seconds.  the pump was clearly overworked.
but i just wanted to finish the pull and see what effect this had on flavor, crema, etc (i'm a scientist by education, couldn't help myself).
then it occurred to me that maybe this was bad for the machine.
so... is it bad for the machine, or is there some kind of internal pressure release valve in the case that it's overloaded?
worse yet, might i have ruined the pump???

thanks for your help... i need it.
back to top
 View Profile Link to this post
fnacer
Senior Member


Joined: 25 Feb 2007
Posts: 465
Location: Denver
Expertise: I love coffee

Espresso: Salvatore E61, Vivaldi Mini...
Grinder: Mazzer Mini, Gaggia MDF,...
Roaster: Behmor 1600
Posted Wed Nov 20, 2013, 10:33pm
Subject: Re: Pump damage with too much pressure?
 

You do pretty much the same thing every time you backflush (you do backflush, don't you?). So don't worry about it. No damage done.
back to top
 View Profile Link to this post
SStones
Senior Member
SStones
Joined: 24 Nov 2012
Posts: 476
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 Thu Nov 28, 2013, 8:01pm
Subject: Re: Pump damage with too much pressure?
 

So long as the pump is pumping and the water is flowing somewhere (Over the relief if nowhere else), then the pump is fine.  Letting a pump continue to run when stalled (Just humming, not moving any water) can cause overheating if you keep it up for too long. 20 seconds shouldn't hurt anything.  
Even the cheapest of vibe pumps, like the 41 watt Ulkas claim a 1:1.5 duty cycle. Nothing wrong with running them against max pressure for a minute so long as they're moving the water.
back to top
 View Profile Link to this post
view previous topic | view next topic | view all topics
Discussions > Espresso > Machines > Pump damage with...  
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.
Cafe Espresso Machines
Video reviews, nationwide installation, leasing options... Nuova Simonelli, Rancilio, La Marzocco.
www.seattlecoffeegear.com
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. (0.288592815399)
Privacy Policy | Copyright Info | Terms and Conditions | CoffeeGeek Advertisers | RSS | Find us on Google+