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Date: 21 Aug 2006 23:16:47
From: Gary B
Subject: Levetta on E61 flips to middle position by itself?
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Hello,
I have a La Valentina with the levetta or lever (like the one at
http://www.1st-cup.com/machines/home_mod/1stline/la_valentina_levetta_espresso_machine.htm),
and the levetta will flip from the downward position into the middle
position of its own accord. It only does it when the machine has been
warmed up and usually after I've been flushing or pulling shots. It'll do
it a few times in a row and then stop.
It tends not to do it for a few days after backflushing - since I presume
cleaning out the old oils effectively increases friction around the seals.
What can I pull apart, check, and clean or replace that may stop this from
occurring?
Has anyone else experienced this and successfully fixed it?
Regards, Gary
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Date: 22 Aug 2006 08:14:52
From: Dan Bollinger
Subject: Re: Levetta on E61 flips to middle position by itself?
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> What can I pull apart, check, and clean or replace that may stop this from
> occurring?
What's the problem with that? I keep my lever (levetta) in the center position
all the time. It is the center off position, neither drain, nor pull. Dan
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Date: 23 Aug 2006 06:48:18
From: Gary B
Subject: Re: Levetta on E61 flips to middle position by itself?
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On Tue, 22 Aug 2006 08:14:52 -0400, Dan Bollinger wrote:
>> What can I pull apart, check, and clean or replace that may stop this from
>> occurring?
>
> What's the problem with that? I keep my lever (levetta) in the center position
> all the time. It is the center off position, neither drain, nor pull. Dan
Hi Dan,
There are a couple of problems with it. Firstly, whilst it may be good to
be able to exercise the choice to have the lever in the middle position, I
don't have that choice if the lever flips to the middle of its own accord.
Secondly, and more importantly the lever has, on occasions, flipped far
enough to engage the pump.
Regards, Gary
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Date: 22 Aug 2006 17:51:08
From: Dan Bollinger
Subject: Re: Levetta on E61 flips to middle position by itself?
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> Hi Dan,
>
> There are a couple of problems with it. Firstly, whilst it may be good to
> be able to exercise the choice to have the lever in the middle position, I
> don't have that choice if the lever flips to the middle of its own accord.
> Secondly, and more importantly the lever has, on occasions, flipped far
> enough to engage the pump.
Gary, You might have a leaking seal causing backpressure to act upon one of the
pistons, thereby moving the cam, and then the lever. Or, there is nothing wrong
at all except that you need to adjust the timing on you pump switch (activated
by the cam on the back of the lever). If so, loosen the switch's front panel nut
a turn or two and tighten the one inside. This will move the switch backwards,
delaying its engagement. Of course, unplug the machine first. Dan
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Date: 23 Aug 2006 21:28:13
From: Gary B
Subject: Re: Levetta on E61 flips to middle position by itself?
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On Tue, 22 Aug 2006 17:51:08 -0400, Dan Bollinger wrote:
>> Hi Dan,
>>
>> There are a couple of problems with it. Firstly, whilst it may be good to
>> be able to exercise the choice to have the lever in the middle position, I
>> don't have that choice if the lever flips to the middle of its own accord.
>> Secondly, and more importantly the lever has, on occasions, flipped far
>> enough to engage the pump.
>
> Gary, You might have a leaking seal causing backpressure to act upon one of the
> pistons, thereby moving the cam, and then the lever. Or, there is nothing wrong
> at all except that you need to adjust the timing on you pump switch (activated
> by the cam on the back of the lever). If so, loosen the switch's front panel nut
> a turn or two and tighten the one inside. This will move the switch backwards,
> delaying its engagement. Of course, unplug the machine first. Dan
Thanks Dan. I'll see what I can pull apart and clean.
Regards, Gary
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