file Gaggia Coffee Deluxe

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7 years 9 months ago #4625 by jimacd
Gaggia Coffee Deluxe was created by jimacd
Hello, I am getting water flow through only one of the four holes in the shower holding plate (no.56 on the attached)
C:\fakepath\gaggia coffee deluxe diagram.pdf
on my Coffee Deluxe; do you have any hints on getting that part off so I can clean it? I have taken the shower disc and the two allen screws out but didn't want to start forcing it too much to begin with.
I have also had the machine apart and it all seems to work okay otherwise although I haven't ever checked temps and pressure.
I should say that the trouble began after I did a vinegar descale plus those three other holes may not have all been working before I started.

Happy New Year by the way...
Jeff

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7 years 9 months ago #4627 by colin
Replied by colin on topic Gaggia Coffee Deluxe
Couple of issues.

Never use vinegar in any coffee or espresso machines.
It is way too acidic.

What has happened is that there was a LOT of scale buildup
in your machine and the descaling has broken it all loose.

Once the Allan head bolts are off the "Brew block" should pop
off. Feel free to get reasonably aggressive with it -- but not
too much (hard to describe what you can get away with...)

You might need professional help - or you might need some more
descaling to break up all that scale.

Get some Melitta Carafe care descaler - or PurCafe or one
of many commercial products OR use 1 tablespoon of Citric acid POWDER
from your druggist or health food store to 1-2 liter of water.

I will check back shortly -- also e-mail me if you have more questions.

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7 years 7 months ago #4636 by jimacd
Replied by jimacd on topic Gaggia Coffee Deluxe
This is a bit delayed so apologies; the machine is fixed though! i took your advice and pried a bit and the block just dropped off no problem.
The machine worked like new but very soon looses that "ram" from the steam maker. Hot water flow through the coffee is fine though so I just have to do something more regular to clear out the scale from the steam making element.
I will try the citric acid, I have used dilute spirit vinegar up until now but don't want to damage it.
Is citric friendlier to the metal internal parts?
Many Thanks

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7 years 7 months ago #4637 by colin
Replied by colin on topic Gaggia Coffee Deluxe
Vinegar is way too harsh for any coffee machine.

Citric acid or an approved product like Melitta Carafe
cleaner, PurCaf etc is the way to go.

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7 years 3 months ago #4683 by pavlov
Replied by pavlov on topic Gaggia Coffee Deluxe
I also have a question regarding gaggia coffee deluxe and you seem to understand this machine judging by your previous post. Since there is a general opinion that good espresso can be achieved (only) by adding OVP and PID (assuming that the coffee grind is correct)I decided to do one mod at the time. To start, I will add the OVP and here is the question: all of the writeups on this mod insist on replacing the steam valve w/bypass with steam valve w/o bypass. Now, that is 50 dollars extra! Why can't I just find an appropriate plug and screw the plug into the outlet!? Is there an issue that I'm overlooking? I would appreciate your take regarding this issue.
Mike

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7 years 3 months ago #4684 by colin
Replied by colin on topic Gaggia Coffee Deluxe

pavlov wrote: I also have a question regarding gaggia coffee deluxe and you seem to understand this machine judging by your previous post. Since there is a general opinion that good espresso can be achieved (only) by adding OVP and PID (assuming that the coffee grind is correct)I decided to do one mod at the time. To start, I will add the OVP and here is the question: all of the write ups on this mod insist on replacing the steam valve w/bypass with steam valve w/o bypass. Now, that is 50 dollars extra! Why can't I just find an appropriate plug and screw the plug into the outlet!? Is there an issue that I'm overlooking? I would appreciate your take regarding this issue.
Mike

I must have lost touch with home espresso because I have never heard of an OVP.
For me, adding a PID to a Gaggia is an investment in time and money that does not deliver - I could be wrong. I have seen Silvia's (Rancilio) with PID's and I suppose they make a difference - after all T-Stats are such ancient technology... kind of the weak link in any espresso machine.

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