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rezz
Senior Member
rezz
Joined: 17 Aug 2011
Posts: 90
Location: Dallas
Expertise: I live coffee

Espresso: La Cimbali Junior, Expobar...
Grinder: Mazzer Major, Kitchenaid...
Vac Pot: Why?
Drip: Really?
Roaster: Hot Top, Gene Cafe
Posted Sun Jul 1, 2012, 6:11pm
Subject: Help With La Cimbali Pump
 

Hey all,

I just got a second hand La Cimbali M21 Junior.. and the pump sounds like it is about to go out. I'm going to order a replacement pump before it does damage to the motor, but can't seem to get info on the type of pump in the machine (I have dismantled it, and couldn't make out any manufacturer info or model numbers). Does anyone know what kind of pump I should order as a replacement?
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MikeReilly
Senior Member


Joined: 28 Oct 2007
Posts: 304
Location: Vancouver Island
Expertise: I love coffee

Espresso: Cimbali Junior Gaggia...
Grinder: Pharos CC45 Mazzer Mini
Drip: Cuisinart
Roaster: Behmor, I-Roast 2, Popper
Posted Mon Jul 2, 2012, 8:46am
Subject: Re: Help With La Cimbali Pump
 

First of all congratulations on picking up a Junior!  Great machine, although you run it a fair bit differently from the Brewtus IV I see in your profile.  Read the review on HB for info on how to get best results.

Secondly, as to the pump.  This really depends on a number of things.  The Junior has been made with both vibe and rotary volumetric pumps.  I'd just take the sides off and look to see what's in there (edit - re-read your -post and you've done that).  Also, what do you mean the pump "sounds like it is about to go out"?  Vibe pumps are pretty noisy and if any of the screws holding the hefty sheet metal bits are loose you get a very loud rattle.  Is it pumping appropriate quantities of water (I believe there's a certain volume per minute they should pump through the group with no back pressure)?  Can you make good espresso with it?  If the answer is yes to both these questions, I'd just check to make sure all the stainless bits are attached properly to reduce noise.  Check Click Here (cafeparts.com) for pictures of a lot of different pumps along with specs.
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rezz
Senior Member
rezz
Joined: 17 Aug 2011
Posts: 90
Location: Dallas
Expertise: I live coffee

Espresso: La Cimbali Junior, Expobar...
Grinder: Mazzer Major, Kitchenaid...
Vac Pot: Why?
Drip: Really?
Roaster: Hot Top, Gene Cafe
Posted Mon Jul 2, 2012, 9:09am
Subject: Re: Help With La Cimbali Pump
 

Hello Mike, and thank you for replying! Yes, I need to change over my profile now that I have a new machine : ).

It is definitely a rotary pump, and I feel that it is going out for two reasons: 1) the motor warms more than it should when the pump is engaged, but works appropriately. 2) there is a rough (almost grinding like) noise coming from the pump when it is engaged. I know it is coming from the pump and nothing else because I took all the panels off of the machine and observed it in action. It takes approximately 2 minutes to refill 14 ounces of water in the boiler(I relieved it using the hot water wand)- which seems very slow to me.

It does make good coffee, but I would rather change a $60 pump now rather than the pump and the >$200 motor later if it continues to put strain on it.
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