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NS Oscar: Loud Cycle and Marital Well-being
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Discussions > Espresso > Machines > NS Oscar: Loud...  
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Lyndon_s
Senior Member


Joined: 7 Oct 2013
Posts: 14
Location: DC
Expertise: I love coffee

Espresso: NS Oscar
Grinder: Baratza Preciso
Roaster: Nesco
Posted Sun Nov 10, 2013, 11:28am
Subject: NS Oscar: Loud Cycle and Marital Well-being
 

I have an older (how old, I'm not sure) Oscar. In recent weeks I have replaced the pump, solenoid 3-way value,  and the valve neplex.
My questions pertains to the sound the machine makes when first switched on (and if left on, the occasional cycle it performs). I assume that the pump needs to draw water into the systems associated with brewing, and that this action requires some work on the part of the pump. The thing is, that initial sound seems *really* loud compared to the rest of the operations. Is there anything I can do to quieten it down some?

My reason for asking has to do with the well being of my long-suffering wife who, when I get up early, is awoken by the 'beast' (as she calls the Oscar) waking from its own slumber in order to provide the blessing of espresso. It's a marriage thing, in other words.

Thanks in advance.

Lyndon
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Coffeenoobie
Senior Member
Coffeenoobie
Joined: 11 Dec 2011
Posts: 3,036
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: K30 & Vario W
Posted Sun Nov 10, 2013, 11:52am
Subject: Re: NS Oscar: Loud Cycle and Marital Well-being
 

When it fills the boiler is it loud.  But mine only lasts a few seconds.   I am not sure you can do anything about it.  I am guessing the boiler amplifies the sound.  Maybe you can add more insulation to the machine, I have seen them really insulated up.  I would think that would muffle the sound somewhat.  Short of a house remodel this is all I can suggest.

 
Coffeenoobie

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

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Oscar trick out: http://s156.photobucket.com/user/GandBteam/story/14231
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erik_hammarlund
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Joined: 20 Jul 2004
Posts: 175
Location: Martha's Vineyard, MA
Expertise: I love coffee

Espresso: X5
Grinder: Nuova MCI doserless
Drip: Braun / bodum press
Posted Sun Nov 10, 2013, 11:54am
Subject: Re: NS Oscar: Loud Cycle and Marital Well-being
 

You probably have a vibratory pump.  It, well.... vibrates.  That can be loud.

The pump itself will make some noise, of course.  It will make a lot MORE noise if there's anything else which is also loose/rattling/vibrating.  So the first thing you might do is to take off the cover and check for loose screws etc.  Then pull some water through it (so the pump turns on) and see if you can track down any other sources of noise.  You can try isolating things with rubber gaskets if need be; you can try a newer pump if yours seems unusually loud.  You can even theoretically look into replacing it with a plumbed in rotary pump unit, which would be quieter.
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Lyndon_s
Senior Member


Joined: 7 Oct 2013
Posts: 14
Location: DC
Expertise: I love coffee

Espresso: NS Oscar
Grinder: Baratza Preciso
Roaster: Nesco
Posted Sun Nov 10, 2013, 11:56am
Subject: Re: NS Oscar: Loud Cycle and Marital Well-being
 

Coffeenoobie Said:

When it fills the boiler is it loud.  But mine only lasts a few seconds.   I am not sure you can do anything about it.  I am guessing the boiler amplifies the sound.  Maybe you can add more insulation to the machine, I have seen them really insulated up.  I would think that would muffle the sound somewhat.  Short of a house remodel this is all I can suggest.

Posted November 10, 2013 link

Thanks. I will investigate insulation. Otherwise, I might be preparing coffee in the basement!
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Lyndon_s
Senior Member


Joined: 7 Oct 2013
Posts: 14
Location: DC
Expertise: I love coffee

Espresso: NS Oscar
Grinder: Baratza Preciso
Roaster: Nesco
Posted Sun Nov 10, 2013, 12:03pm
Subject: Re: NS Oscar: Loud Cycle and Marital Well-being
 

erik_hammarlund Said:

You probably have a vibratory pump.  It, well.... vibrates.  That can be loud.

The pump itself will make some noise, of course.  It will make a lot MORE noise if there's anything else which is also loose/rattling/vibrating.  So the first thing you might do is to take off the cover and check for loose screws etc.  Then pull some water through it (so the pump turns on) and see if you can track down any other sources of noise.  You can try isolating things with rubber gaskets if need be; you can try a newer pump if yours seems unusually loud.  You can even theoretically look into replacing it with a plumbed in rotary pump unit, which would be quieter.

Posted November 10, 2013 link

Right. The new Ulka pump is quieter than the old pump that came with this machine. I expected noise, just not so much noise. Your suggestion about tracking down other sources is a good idea. I'll start with the screws. Thanks.
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,842
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Sun Nov 10, 2013, 12:34pm
Subject: Re: NS Oscar: Loud Cycle and Marital Well-being
 

Vibe pumps are loud, there is no getting around that. But a rotary pump does not GUARANTEE a quiet machine. I love my ECM but the layout of the machine amplifies the sound of the rotary pump until it is nearly as loud as a vibe pump. There are things to do to help quite it down but from the factory, it is quite noisey, in its intended environment that isn't a big deal  (restaurant) but in a home it is quite noticeable.

My M32 is MUCH QUIETER. and is no problem in a home. Both are fairly expensive machines.

Is the bedroom next week to the coffee prep area or is it a little distance away?. If you close doors between does it help?

In a very quiet environment like a home early in the morning, the noise may SEEM to be much louder than it really is. You don't sayhow long you have had the machine, iI suspect that if it is new to the home she may become used to the noise after a while, much like after a while you don't even notice traffic noise after moving into a home next to a busy street or a baby becoming used to the noises in a home and learning to sleep through them, then again, that may not be the case.

I could offer things like a sound insulated box to put over to the machine but then you need to deal with the box the rest of the time.

Perhaps one of those sound generators may help, they make soft house such as waves etc to sooth the listener, one of those would mask the noise of the machine esp if the noise machine was in the bedroom and the door  was closed

I may be way off the mark here, just trying to help!

 
In real life, my name is
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Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

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Coffeenoobie
Senior Member
Coffeenoobie
Joined: 11 Dec 2011
Posts: 3,036
Location: PNW
Expertise: I like coffee

Espresso: N S Oscar
Grinder: K30 & Vario W
Posted Sun Nov 10, 2013, 12:34pm
Subject: Re: NS Oscar: Loud Cycle and Marital Well-being
 

If it is only when the boiler fills then the pump is probably working as intended.

 
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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Woody
Senior Member
Woody
Joined: 26 Jan 2004
Posts: 607
Location: Hood River, OR
Expertise: I love coffee

Espresso: La Spaziale Vivaldi I
Grinder: Mazzer Major
Vac Pot: Hoover
Drip: yuck
Roaster: Behmor
Posted Sun Nov 10, 2013, 4:24pm
Subject: Re: NS Oscar: Loud Cycle and Marital Well-being
 

You might also try to place the machine on a rubber mat to help absorb some of the sound.  But Lyndon, you are missing a GOLDEN opportunity to upgrade....  "Honey, I would really like to change to a machine with a rotary pump and dual boiler which will not disturb you nearly as much".  Work it man, work it!!

Jon
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qualin
Senior Member
qualin
Joined: 30 Jun 2012
Posts: 662
Location: Calgary, AB
Expertise: I love coffee

Espresso: Izzo Alex Duetto 3
Grinder: Mazzer Mini Elect. Type A
Vac Pot: Looking to buy
Drip: Manual
Roaster: Considering?
Posted Sat Nov 16, 2013, 12:43am
Subject: Re: NS Oscar: Loud Cycle and Marital Well-being
 

I agree.. Vibe pumps are loud, but the surface which the machine is on is also amplifying the vibration of the pump.

Get a pad of closed cell Neoprene foam and that will cushion the vibration of the machine and quiet it down a bit, but it still won't quiet the machine completely.

After about six months of my own wife hearing the vibe pump of my Silvia, she was much more accepting of my Duetto and couldn't believe how quiet it was.

Good luck man. :)

 
Garbage In, Garbage Out, for every step of the process. From Beans to grinder, grounds to machine, coffee to cup.
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