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Another DB Quickmill
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Discussions > Espresso > Machines > Another DB...  
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DavecUK
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Joined: 21 Sep 2005
Posts: 1,449
Location: UK
Expertise: I love coffee

Posted Wed Sep 4, 2013, 3:31pm
Subject: Re: Another DB Quickmill
 

DeanOK Said:

I am home from work now so I checked that plug. First, the plug was not in the hole when the machine arrived, it was just laying in the bag.  I put it in when I unboxed the machine, but it didn't seem to want to go in well. I now realize why because the black plastic plug was hitting the adjustment on the pump and that would not allow it to seat in the hole and snap it.

When I came home, I put the blind basket in and turned the machine on. I then pulled the black plastic plug out. I couldn't tell any difference in noise, but I put my finger on the pump and it does have a noticeable amount of vibration. However, pushing on the pump through the hold lightly didn't make much difference and if I pushed more firmly, it made the pump louder.

FWIW

Posted September 4, 2013 link

On some machines the pump adjuster just touches (mine), on some it doesn't, it's a matter of a millimetre or so and reflects the differences in hand made machines. I have suggested they might look at the acorn nut type of adjuster as it's about 5mm shallower and should simply be an alternative option within the same pump.

Other things that can affect noise are positioning of any internal components, side panels, water tank carrier, just shifting those fractionally can make all the difference. In addition sometimes a little piece of stick one side foam rubber in the lift of cup warmer tray area can help. To the person who said they could feel the pump vibrating, yes you will, it's on rubber mounts and you will feel it. I'm possibly lucky, mines very quiet..but the first machine I had was probably even quieter. I also took both mine apart and when I put them back together, I am a bit anal about getting it absolutely right.
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DeanOK
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DeanOK
Joined: 24 Sep 2012
Posts: 693
Location: OK
Expertise: I like coffee

Espresso: QM Vetrano 2B
Grinder: Vario W
Posted Wed Sep 4, 2013, 3:58pm
Subject: Re: Another DB Quickmill
 

DavecUK Said:

On some machines the pump adjuster just touches (mine), on some it doesn't, it's a matter of a millimetre or so and reflects the differences in hand made machines. I have suggested they might look at the acorn nut type of adjuster as it's about 5mm shallower and should simply be an alternative option within the same pump.

Other things that can affect noise are positioning of any internal components, side panels, water tank carrier, just shifting those fractionally can make all the difference. In addition sometimes a little piece of stick one side foam rubber in the lift of cup warmer tray area can help. To the person who said they could feel the pump vibrating, yes you will, it's on rubber mounts and you will feel it. I'm possibly lucky, mines very quiet..but the first machine I had was probably even quieter. I also took both mine apart and when I put them back together, I am a bit anal about getting it absolutely right.

Posted September 4, 2013 link

I took that tray off of the top and pushed around on the cabinet and don't really find much of anything that makes a lot of difference. I really don't consider mine to be noisy enough to be an issue for me. I realize you can hear it in the video, but when I am standing right next to it I don't find the noise objectionable. My old machine was a vibe pump I could hear all over the house so maybe I am desensitized.
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SylvainMtl
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Joined: 5 Apr 2006
Posts: 142
Location: Montreal
Expertise: I love coffee

Espresso: Elektra Sixties A3
Grinder: Mazzer Super Jolly with...
Posted Wed Sep 4, 2013, 4:06pm
Subject: Re: Another DB Quickmill
 

It's not objectionable.  It actually sounds like most other SS box type machines witt internal rotary pumps, this is to say, it doesn't sound especially quiet either.  The only thing that maybe abnormal (not sure) is the high pitch noise when you first engaged the pump in the video.
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cuznvin
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Joined: 6 Oct 2011
Posts: 656
Location: NY
Expertise: I love coffee

Espresso: La Spaziale Mini Vivaldi II
Grinder: MACAP M4 Stepless /Baratza...
Drip: YouBrew
Posted Wed Sep 4, 2013, 4:12pm
Subject: Re: Another DB Quickmill
 

SylvainMtl Said:

It's not objectionable.  It actually sounds like most other SS box type machines witt internal rotary pumps, this is to say, it doesn't sound especially quiet either.  The only thing that maybe abnormal (not sure) is the high pitch noise when you first engaged the pump in the video.

Posted September 4, 2013 link

do you mean the scale beep?? Dean, do you normally pull to 1.5 ounces? how much are you dosing?
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DeanOK
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DeanOK
Joined: 24 Sep 2012
Posts: 693
Location: OK
Expertise: I like coffee

Espresso: QM Vetrano 2B
Grinder: Vario W
Posted Wed Sep 4, 2013, 4:29pm
Subject: Re: Another DB Quickmill
 

cuznvin Said:

do you mean the scale beep?? Dean, do you normally pull to 1.5 ounces? how much are you dosing?

Posted September 4, 2013 link

I don't pay any attention to the ounces. I dose 18g and try to yield about 30-32g. Seems like that is always my sweet spot. I am looking for the correct time since I changed machines though. Its looking like 25-28 second from first drip on this machine.  I just now pulled a shot that went 34 grams in about 23 seconds and its not so great.

I notice that I don't get as much crema off of the shot when the beans have been frozen. If those had been fresh unfrozen beans I imagine the crema would have touched the 2oz mark.
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SylvainMtl
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Joined: 5 Apr 2006
Posts: 142
Location: Montreal
Expertise: I love coffee

Espresso: Elektra Sixties A3
Grinder: Mazzer Super Jolly with...
Posted Wed Sep 4, 2013, 4:43pm
Subject: Re: Another DB Quickmill
 

cuznvin Said:

do you mean the scale beep?? Dean, do you normally pull to 1.5 ounces? how much are you dosing?

Posted September 4, 2013 link

I hope you are kidding... I said when the pump is engaged, not 8 seconds after.  There is a screeching sound, don't know, might the be motor.
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cuznvin
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Joined: 6 Oct 2011
Posts: 656
Location: NY
Expertise: I love coffee

Espresso: La Spaziale Mini Vivaldi II
Grinder: MACAP M4 Stepless /Baratza...
Drip: YouBrew
Posted Wed Sep 4, 2013, 4:45pm
Subject: Re: Another DB Quickmill
 

SylvainMtl Said:

I hope you are kidding... I said when the pump is engaged.  There is a screeching sound, don't know, might the be motor.

Posted September 4, 2013 link

hey.. ive seen a lot worse here!
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DeanOK
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DeanOK
Joined: 24 Sep 2012
Posts: 693
Location: OK
Expertise: I like coffee

Espresso: QM Vetrano 2B
Grinder: Vario W
Posted Wed Sep 4, 2013, 4:57pm
Subject: Re: Another DB Quickmill
 

SylvainMtl Said:

I hope you are kidding... I said when the pump is engaged, not 8 seconds after.  There is a screeching sound, don't know, might the be motor.

Posted September 4, 2013 link

Dang, you have good hearing. I turned the audio all the way up and didn't hear it. I can tell you it sounds almost the same as the 3 group La Marzocco  that is in the coffee shop about 3 miles from my house. I am perfectly happy with the noise level and don't plan on worrying about it at this point.
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ECM
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ECM
Joined: 11 Oct 2003
Posts: 476
Location: Halifax, Nova Scotia Canada
Expertise: I like coffee

Espresso: Quick Mill Vetrano 2B
Grinder: Mazzer Robour E
Vac Pot: French Press
Drip: no
Roaster: Fresh Roast+8,  i-roast and...
Posted Wed Sep 4, 2013, 4:59pm
Subject: Re: Another DB Quickmill
 

Boy I guess I really opened a can of worms with the vibration loudness comments.  I do think it's probably just a case of the video camera favoring the frequencyf response from  the buzz of your pump.  

Concerning the higher pump readings then what CCS had originally set the machine for??

Thatís actually quite normal from what I understand.

When I took ownership of my GS3 CCS had naturally conducted the bench test and had it all set up for me.  However, when I got the machine set up in my home in Ontario I noticed that the pump pressure was hitting around 10.5 when pulling a shot.  I then lowered it back down manually and everything was fine again.  

I remember reading somewhere that your pump pressure can read differently based on altitude above sea level.  Iím not sure where the gentlemen who commented on his pump pressure being too high is from but Iím willing to bet itís not Albany New York.  In other wordsÖ. A correct pump pressure in New York is going to differ substantially if you take that same machine to Bolder Colorado.  Bolder is a lot higher in altitude and therefore, I thinkÖÖ it would require that the user reduce the pressure to accommodate the higher altitude?      

We should all probably double check our pump pressure upon first receiving an espresso machine to adjust it correctly for our own specific atmospheric conditions.  Just something to keep in mind.

Rob
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DeanOK
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DeanOK
Joined: 24 Sep 2012
Posts: 693
Location: OK
Expertise: I like coffee

Espresso: QM Vetrano 2B
Grinder: Vario W
Posted Wed Sep 4, 2013, 5:24pm
Subject: Re: Another DB Quickmill
 

ECM Said:

Boy I guess I really opened a can of worms with the vibration loudness comments.  I do think it's probably just a case of the video camera favoring the frequencyf response from  the buzz of your pump.  

Posted September 4, 2013 link

Here is a little test with an Android sound level meter... have no idea how accurate this is... but maybe it will help you

I turned off everything I could find in my house that made noise except the blower on my air conditioner which runs at a very low speed when the ac I not on ((I cant hear it). It was quiet but I could hear kids playing outside in the cul-de-sac.


Background noise in the kitchen with nothing running was showing    38db.
12" in front of V2V with pump running and blind basket installed        69db
12" in front of vibe machine with blind basket and pump running        82db

I then fanned the door on the refrigerator so the refrigerator would kick on. Standing in front of the refrigerator (doors closed) I measured 52 db with it running. Nothing else in the kitchen was on.
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