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Nuova Simonelli Oscar issue
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Discussions > Espresso > Machines > Nuova Simonelli...  
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ianpirro
Senior Member
ianpirro
Joined: 24 Mar 2013
Posts: 12
Location: Boston
Expertise: I like coffee

Espresso: Nuova Simonelli Oscar
Grinder: Macap M4
Posted Sun Mar 24, 2013, 5:51pm
Subject: Nuova Simonelli Oscar issue
 

Hello,
I recently purchased a used Nuova Simonelli Oscar machine, it is in very good condition and seems to have been well taken care of. The only thing I am noticing is when running water through the group head it does not seem to flow correctly and after it is stopped it will sometimes drip water out a few seconds later. I tried running without the dispersion screen and it seemed to flow regularly and not leak after stopping the water. If anyone has any suggestions on how I could fix this I would really appreciate it. I realize this is probably a bad explanation so I have put a video of it here Click Here (www.youtube.com)

Thanks,
--ian
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Coffeenoobie
Senior Member
Coffeenoobie
Joined: 11 Dec 2011
Posts: 3,030
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: K30 & Vario W
Posted Mon Mar 25, 2013, 10:07am
Subject: Re: Nuova Simonelli Oscar issue
 

Mine drips after I cut the pump off also.  Always has, but your stream seems thin and weak to me. Those vibe pumps need replacing after a few years, how old is the pump?

This is not a perfect pull but I have a lot more water coming out
http://www.youtube.com/watch?v=71JoPxbBtLA

 
Coffeenoobie

Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder.

My coffee treasure map...
Click Here (maps.google.com)

Oscar trick out: http://s156.photobucket.com/user/GandBteam/story/14231
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ianpirro
Senior Member
ianpirro
Joined: 24 Mar 2013
Posts: 12
Location: Boston
Expertise: I like coffee

Espresso: Nuova Simonelli Oscar
Grinder: Macap M4
Posted Mon Mar 25, 2013, 10:50am
Subject: Re: Nuova Simonelli Oscar issue
 

I realized right after this that the water level was low and the light came on, which may have contributed to the weak stream? Usually it is a much stronger stream but certainly not as strong as shown in your video. I recently bought this from an older lady who was using it in a small "cafe" (it was really just a countertop with some snacks, a drip coffee maker, and this machine) in a jewelry store in a small town. By the looks of the "cafe" I would be surprised if the machine was used more than 50 times in it's life so far. I assume the machine is a few years old, it is possible that it needs a decent cleaning as it seemed that she was just using pre-ground espresso and the plastic tamper that came with the machine. Overall the machine is basically in perfect condition, if I can't figure it out I'll probably have it looked at, as I got ( what I feel ) was a pretty good deal on the machine, and putting a few more bucks into it seems worth it for sure. The group head gasket does seem to not be perfectly seated, maybe that has something to do with this issue? As I stated with the dispersion screen and nut removed it seems to be functioning fine. Thanks for the response
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Coffeenoobie
Senior Member
Coffeenoobie
Joined: 11 Dec 2011
Posts: 3,030
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: K30 & Vario W
Posted Mon Mar 25, 2013, 11:12am
Subject: Re: Nuova Simonelli Oscar issue
 

Ok, right away replace the gasket, $7 and you do it every 6 months or so, more often if you leave it on 24x7. (I buy 2 at a time because it is cheap and the shipping adds to the price so might as well just get a years worth at a time)   Every time I get parts I tend to order one, I need to do that now in fact.  That has nothing to do with anything but the seating of the PF. The water flow is the pump or maybe the lines have to be descaled.  How hard is the water in the town it came from??

Then I would go a head and look at the date on the pump but I would probably buy a pump anyway they are $50 and often need replacing in 3-5 years and I think your pump is weak based on how it looked to me. (chriscoffee has both and free shipping at 50$. also Espressoparts has free parts shipping all the time and has both as well)  You can also get a new screen they are like 5$ and get you some good baskets, I hate the NS ones.  I also got a machine shop to chop off the bottom of one of my baskets to make it naked and I could work on my prep.  It shows you fast that you need work on your prep.  I always have a sprite or 2.  

I got VST baskets but at least get better ones.  Don't bother with the single it is a pain, just use the double basket.

 
Coffeenoobie

Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder.

My coffee treasure map...
Click Here (maps.google.com)

Oscar trick out: http://s156.photobucket.com/user/GandBteam/story/14231
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ianpirro
Senior Member
ianpirro
Joined: 24 Mar 2013
Posts: 12
Location: Boston
Expertise: I like coffee

Espresso: Nuova Simonelli Oscar
Grinder: Macap M4
Posted Mon Mar 25, 2013, 11:53am
Subject: Re: Nuova Simonelli Oscar issue
 

I actually ordered some gaskets right after purchasing the machine as I figured I might as well replace it, so I'll do that. I am not sure how the water is in the town I got it from. I suppose I'll just grab a new pump, as my machine is clearly far off from the the machine in your video, and see how that goes. Thanks again for the advice,
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Coffeenoobie
Senior Member
Coffeenoobie
Joined: 11 Dec 2011
Posts: 3,030
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: K30 & Vario W
Posted Mon Mar 25, 2013, 12:15pm
Subject: Re: Nuova Simonelli Oscar issue
 

When you remove the pump you might be able to see scale on the parts and if you do you know it needs cleaning.  You can also check your water probe to gauge how bad the boiler is.

 
Coffeenoobie

Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder.

My coffee treasure map...
Click Here (maps.google.com)

Oscar trick out: http://s156.photobucket.com/user/GandBteam/story/14231
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ianpirro
Senior Member
ianpirro
Joined: 24 Mar 2013
Posts: 12
Location: Boston
Expertise: I like coffee

Espresso: Nuova Simonelli Oscar
Grinder: Macap M4
Posted Thu Apr 4, 2013, 10:29am
Subject: Re: Nuova Simonelli Oscar issue
 

So it looked like it needed a decent cleaning, it now performs how I expected for the most part. Thanks again for all the advice.

One more question regarding the water after the pump is shut off.

Here it is with the shower screen on ( watch the whole thing to see what I am referring to )

http://www.youtube.com/watch?v=fvQwtarOjxk

What may cause this? Is this normal, and if not any suggestions? It doesn't bother me too much, only that it does this into the puck making it pretty messy.

Heres a video with the screen removed to show that it stops right away without that late drip.

http://www.youtube.com/watch?v=SG0CzhlZCjs

I attached a photo of the screen and nut, look to be in good condition?

ianpirro: photo (1).JPG
(Click for larger image)
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Coffeenoobie
Senior Member
Coffeenoobie
Joined: 11 Dec 2011
Posts: 3,030
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: K30 & Vario W
Posted Thu Apr 4, 2013, 10:43am
Subject: Re: Nuova Simonelli Oscar issue
 

Nut?  Could it be a pod machine?  Mine doesn't have a nut.  Mine looks like a brass disk, screw and screen.  My brass part has only 4 holes and I believe is larger than that pod one linked.

http://www.espressoparts.com/S_377?&search_id=2045121

 
Coffeenoobie

Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder.

My coffee treasure map...
Click Here (maps.google.com)

Oscar trick out: http://s156.photobucket.com/user/GandBteam/story/14231
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ianpirro
Senior Member
ianpirro
Joined: 24 Mar 2013
Posts: 12
Location: Boston
Expertise: I like coffee

Espresso: Nuova Simonelli Oscar
Grinder: Macap M4
Posted Thu Apr 4, 2013, 11:01am
Subject: Re: Nuova Simonelli Oscar issue
 

I'm not sure exactly why that is there but after a  quick look... I see the nut found here Click Here (www.espressoparts.com) which is for their commercial machines, maybe someone mistakenly put this on in?  After looking at the parts digram on the NS site, that definitely seems to be the wrong part in there. Any chance there is a place I can get just the brass diffusion disk? Otherwise I see one on chris coffee but it is a kit with some more baskets and stuff.
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Coffeenoobie
Senior Member
Coffeenoobie
Joined: 11 Dec 2011
Posts: 3,030
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: K30 & Vario W
Posted Thu Apr 4, 2013, 11:07am
Subject: Re: Nuova Simonelli Oscar issue
 

I have never seen it sold by itself but you can call NS.  Their shipping charges are high and you need a minimum purchase.  I would probably get it with the extra screen and nut.  Both can need replacing.  I did not realize that but after Plindy worked on my machine he replaced my screen and it is nice.  Not that my other screen was that bad.  It did have a scratch on it.  In fact he took my old one apart expecting to see it have tarred coffee cooked on under it and he said it was the cleanest screen he had ever taken apart.

 
Coffeenoobie

Buying advice: GRINDER GRINDER GRINDER. Don't cheap out on the grinder.

My coffee treasure map...
Click Here (maps.google.com)

Oscar trick out: http://s156.photobucket.com/user/GandBteam/story/14231
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 View Profile Visit website Link to this post
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