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Date: 03 Jun 2007 07:38:24
From: jknotzke
Subject: Leaky Steam wand Cimbali JR


Hi,

As the subject states, I have a leaky steam wand. It drips.. I have
to crank the valve down super tight to get it to stop.. but it still
leaks..

I'll use a Coffee Parts diagram to indicate what I have done thus
far:

http://www.coffeeparts.com/cim/cim2.html

I've replaced 700269 (but the O-Ring was fine). I have never
replaced 700222 (the machine is 10-15yrs old).

When you click on 700269, in the popup there is reference to:

Part no.: 700713
Part name: steam valve gasket alina

I don't see that anywhere on my machine.. What is this ?

So the question is, what else should I do to fix this &$&#@ leaky
wand ?

Thanks

J





 
Date: 04 Jun 2007 15:43:53
From: jknotzke
Subject: Re: Leaky Steam wand Cimbali JR
On Jun 4, 11:46 am, "Ken Fox" <morceaudemerdeSnipT...@hotmail.com >
wrote:
> I don't know what "700713" is and can't find it in any of coffeeparts.com's
> Cimbali diagrams.

http://www.coffeeparts.com/cim/cim2.html

Click on 700269 and you'll get a popup:


Part no.: 700713
Part name: steam valve gasket alina
Price (AUD): $ 2.10

>
> As to the valve lubrication and seals, one of the techs at Bravo
> demonstrated the replacement technique to me on a visit and it was very
> simple, requiring little knowledge about working on valves or complex repair
> work. It basically involves using one of those strange pliars (?ring
> pliers?) with straight points to release the ring holding the assembly in
> place. The valve then screws out. After cleaning it and wiping off excess
> food safe high-temp silicone grease, one lubes the valve, replaces the 2
> soft rubber parts, and reinstalls the valve followed by the ring. I believe
> the price for replacement parts, 2 sets for the two valves in the machine,
> would be in the range of $2 or $3. The valves are designed to be lubricated
> and if you put them in without lubrication and they do not seal, that could
> certainly be the problem.

Right, I think we have found the problem. I haven't replaced the
gasket at the end of the piston and I did not grease the valve.

Thanks Ken,

J






 
Date: 04 Jun 2007 04:41:16
From: jknotzke
Subject: Re: Leaky Steam wand Cimbali JR


Oh ya, and what is 700713 ?

Thanks

J



  
Date: 04 Jun 2007 17:41:07
From: Danny
Subject: Re: Leaky Steam wand Cimbali JR
jknotzke wrote:
>
> Oh ya, and what is 700713 ?
>
> Thanks
>
> J
>

I give in, no such part that I can see?

--
Regards, Danny

http://www.gaggia-espresso.com (a purely hobby site)
(apparently bad grammar but I like it that way...)



  
Date: 04 Jun 2007 09:46:10
From: Ken Fox
Subject: Re: Leaky Steam wand Cimbali JR
I don't know what "700713" is and can't find it in any of coffeeparts.com's
Cimbali diagrams.

I'm no expert on this stuff, however it is my impression that the parts
numbering that coffeeparts.com uses bears no relationship to the parts
numbering system that Cimbali uses; it may be the numbering system that
their suppliers, including I think Nuova Ricambi, uses. If my memory is
correct, Cimbali itself has changed their own parts numbers with a different
system beginning a few years ago, and in some cases has replaced old parts
with newer, compatible, parts whose part numbers are completely different
than the old numbers. So I don't think that quoting those parts numbers you
see on CP's webpages to a Cimbali dealer will get you very far.

As to the valve lubrication and seals, one of the techs at Bravo
demonstrated the replacement technique to me on a visit and it was very
simple, requiring little knowledge about working on valves or complex repair
work. It basically involves using one of those strange pliars (?ring
pliers?) with straight points to release the ring holding the assembly in
place. The valve then screws out. After cleaning it and wiping off excess
food safe high-temp silicone grease, one lubes the valve, replaces the 2
soft rubber parts, and reinstalls the valve followed by the ring. I believe
the price for replacement parts, 2 sets for the two valves in the machine,
would be in the range of $2 or $3. The valves are designed to be lubricated
and if you put them in without lubrication and they do not seal, that could
certainly be the problem.

If swapping the valves has solved the problem then this suggests to me that
one of the valves has possibly been somewhat damaged and that will need to
be very careful with these valves in the future, replacing the rubber parts
often and operating the valves gently, or you are likely to need to replace
a valve at some point and that is going to be costly. The last time I
checked, those brass valves are not available as knockoff, off-brand,
replacements.

ken



"jknotzke" <jknotzke@shampoo.ca > wrote in message
news:1180957276.763044.88730@n4g2000hsb.googlegroups.com...
>
>
> Oh ya, and what is 700713 ?
>
> Thanks
>
> J
>




 
Date: 04 Jun 2007 04:38:15
From: jknotzke
Subject: Re: Leaky Steam wand Cimbali JR
On Jun 4, 3:21 am, "Ken Fox" <morceaudemerdeSnipT...@hotmail.com >
wrote:

> Danny is also right that cranking down the valves is a recipe for disaster.
> I have been told this previously by the Cimbali dealer in Vancouver, Bravo
> Coffee, and that these parts need to be replaced regularly (my guess would
> be every 2-3 years in home usage, vs. at least once a year in a commercial
> setting). You will need some high temperature silicone grease, in addition
> to the two soft parts (700269 and 700222). The valve stem needs generous
> lubrication when you replace these parts. If you continue to crank down
> hard the valves themselves will need replacement and they cost more than
> $100 each.

Thanks Ken,

I had replaced the 700222 but not the 700269.. I had purchased
about 5 of those O Rings and normally when I replace them, the leaking
stopped. However, this time, it did not.. thus my posting.

What I did this time was simply swap the valve for the water with
the valve for the steam. That has fixed everything for now.

I will order 700269 and some more 700222 and get some proper
grease for the next time it happens.

Thanks

J



 
Date: 03 Jun 2007 16:00:47
From: Danny
Subject: Re: Leaky Steam wand Cimbali JR
jknotzke wrote:
>
> Hi,
>
> As the subject states, I have a leaky steam wand. It drips.. I have
> to crank the valve down super tight to get it to stop.. but it still
> leaks..
>
> I'll use a Coffee Parts diagram to indicate what I have done thus
> far:
>
> http://www.coffeeparts.com/cim/cim2.html
>
> I've replaced 700269 (but the O-Ring was fine). I have never
> replaced 700222 (the machine is 10-15yrs old).
>
> When you click on 700269, in the popup there is reference to:
>
> Part no.: 700713
> Part name: steam valve gasket alina
>
> I don't see that anywhere on my machine.. What is this ?
>
> So the question is, what else should I do to fix this &$&#@ leaky
> wand ?
>
> Thanks
>
> J
>

70222 is always the culprit on my machines (Gaggia, but similar valve
construction). The "o" rings are to stop the shaft leaking. If your
gasket is leaking (pad seals, as the similar items are known on
Gaggia's) are that old they will have hardened, so change them.
Constant screwing the valve harder down to stop the leak will damage
the valve terminally.

--
Regards, Danny

http://www.gaggia-espresso.com (a purely hobby site)
(apparently bad grammar but I like it that way...)



  
Date: 04 Jun 2007 01:21:23
From: Ken Fox
Subject: Re: Leaky Steam wand Cimbali JR
As Danny says, it is almost certainly the 700222 as illustrated in the
coffeeparts.com diagram. I have never had a leak in a steam wand, but my
machines were bought new and have never been abused; home use is much easier
on such a machine compared to commercial usage and such parts need not be
replaced as frequently in home use.

Danny is also right that cranking down the valves is a recipe for disaster.
I have been told this previously by the Cimbali dealer in Vancouver, Bravo
Coffee, and that these parts need to be replaced regularly (my guess would
be every 2-3 years in home usage, vs. at least once a year in a commercial
setting). You will need some high temperature silicone grease, in addition
to the two soft parts (700269 and 700222). The valve stem needs generous
lubrication when you replace these parts. If you continue to crank down
hard the valves themselves will need replacement and they cost more than
$100 each.

I would not bother trying to chase down this stuff from a knockoff supplier
such as coffeeparts. These rubber parts are dirt cheap in OEM form. Search
out your nearest local Cimbali dealer, if all else fails contact Bravo in
Vancouver, and replace them. I'm sure a Bravo tech would explain to you how
to replace these parts and how to lube them up properly.

ken





"Danny" <danny@nospam.gaggia-espresso.com > wrote in message
news:5cg3dcF30t168U1@mid.individual.net...
> jknotzke wrote:
>>
>> Hi,
>>
>> As the subject states, I have a leaky steam wand. It drips.. I have
>> to crank the valve down super tight to get it to stop.. but it still
>> leaks..
>>
>> I'll use a Coffee Parts diagram to indicate what I have done thus
>> far:
>>
>> http://www.coffeeparts.com/cim/cim2.html
>>
>> I've replaced 700269 (but the O-Ring was fine). I have never
>> replaced 700222 (the machine is 10-15yrs old).
>>
>> When you click on 700269, in the popup there is reference to:
>>
>> Part no.: 700713
>> Part name: steam valve gasket alina
>>
>> I don't see that anywhere on my machine.. What is this ?
>>
>> So the question is, what else should I do to fix this &$&#@ leaky
>> wand ?
>>
>> Thanks
>>
>> J
>>
>
> 70222 is always the culprit on my machines (Gaggia, but similar valve
> construction). The "o" rings are to stop the shaft leaking. If your
> gasket is leaking (pad seals, as the similar items are known on Gaggia's)
> are that old they will have hardened, so change them. Constant screwing
> the valve harder down to stop the leak will damage the valve terminally.
>
> --
> Regards, Danny
>
> http://www.gaggia-espresso.com (a purely hobby site)
> (apparently bad grammar but I like it that way...)
>