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Applied WD-40 to my Super Jolly - help with cleaning it out?
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dabac
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dabac
Joined: 7 May 2013
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Location: Genova, Italy
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Posted Wed Dec 18, 2013, 2:44am
Subject: Applied WD-40 to my Super Jolly - help with cleaning it out?
 

Hi all,

I did something quite stupid.. I recently got ahold of a heavily used Super Jolly, and, wanting to clean all of it and replace burrs (but unable to shift its adjustment collar by even a milimeter), I applied some WD-40 from the outside to help me unscrew the collar..

Anyway, once I managed to finally get it open I found out that some WD-40 got on the inside, and is now spread over the bottom of the lower burr carrier - this part:
Click Here (www.home-barista.com)
(the picture is not mine; mine looks more greasy and with coffee grounds)..

I've tried cleaning it out with small doses of etile alcohol, however it seems that I can't really make a thorough enough cleaning without taking the whole lower burr carrier out, and I don't know how to do that (I'm not able to unscrew the screw that holds it together, and even if I do I've read that people have been having troubles with taking the thing out)..

Anyway, does anyone have advice on how to get this carrier out and, even if I do that, what can I use to thoroughly get rid of the remainders of the WD-40 oil? Also, how concerned should I be about any health hazards that WD-40 may have?

Thank you!
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moosepucky
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moosepucky
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Posted Wed Dec 18, 2013, 9:51am
Subject: Re: Applied WD-40 to my Super Jolly - help with cleaning it out?
 

Doing a google site search brings back a lot of posts about how to remove the lower burr. I'm sure one of them will sort you out

Lower Burr removal posts on coffeegeek forum
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
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Location: Riverside, Ca, U.S.A.
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Espresso: ECM Vene. A1, La Cimbali M32
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Roaster: gave it a try, decided no
Posted Fri Dec 20, 2013, 7:25am
Subject: Re: Applied WD-40 to my Super Jolly - help with cleaning it out?
 

EEK!

Petro based oil is NEVER a good thing to use on food equipment but you know that and that ship has sailed.

It is VERY hard to remove once it has penetrated the metal, there are lots of places for it to seep into and to be VERY difficult to remove. For future reference to anyone reading this thread, a natural product such as the orange based Goo Gone (check label please!!!!) will cut right through the gunk while still being food safe.

I suppose that trace amounts likely will not hurt you but I am not a researcher in food safe science. Possibly a good cleaning with a non toxic degreaser such as above (again please check label) may get most of the residue out of the pores of the metal.

Good luck!

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

Feed the newbs, starve the trolls and above all enjoy what you drink!
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CoffeeRoastersClub
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Posted Fri Dec 20, 2013, 8:42am
Subject: Re: Applied WD-40 to my Super Jolly - help with cleaning it out?
 

WD-40 is not just an oil, its a penetrant.  I did a search and found a reference for removal:

http://www.bikeforums.net/archive/index.php/t-188742.html
"I got a response back from the folks at wd40.com. They say either mineral spirits or acetone will completely remove WD-40. Which proves, once again, that people here at bikeforums know what they're talking about."

Note that mineral spirits are petroleum based also, so cross that solution off the list.  That leaves acetone which leaves a residue also.

Len

 
"Coffee leads men to trifle away their time, scald their chops, and spend their money, all for a little base, black, thick, nasty, bitter, stinking nauseous puddle water." ~The Women's Petition Against Coffee, 1674

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dana_leighton
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Posted Fri Dec 20, 2013, 10:31am
Subject: Re: Applied WD-40 to my Super Jolly - help with cleaning it out?
 

Folks, remember that these parts are machined, and as such require petroleum based cutting oils to deal with heat and friction. They are cleaned after cutting. There are food-safe solvents that will remove these contaminants.

The OP references "etile" alcohol, which I don't know about, and an Internet search does not reveal anything. However, pure alcohol will act as a solvent. I used "Everclear" which you can get at a liquor store.

See this post and the thread it's in. Wayne is overly cautious in this regard, I think. To say it's NEVER a good thing to use a petroleum based product is an overstatement. There are situations where they need to be used, and the food industry has solutions for the problem, but I will agree with him that it should be avoided and a last resort.

I think when you can remove the bottom carrier and soak/rinse it in Everclear, and clean the rest of the food-contact machine as much as you safely can, you will likely have removed the majority of the contaminant.

 
Dana Leighton - Espresso hack and CoffeeGeek moderator
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emradguy
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Posted Fri Dec 20, 2013, 11:42am
Subject: Re: Applied WD-40 to my Super Jolly - help with cleaning it out?
 

Maybe wrongly so....but I took "etile" as a mispelling for ethyl alcohol (aka ethanol, branded for consumption purposes as Evereclear). Hopefully the OP will, clear this up.

 
.
Always remember the most important thing is what ends up in your cup!
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dabac
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dabac
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Location: Genova, Italy
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Posted Sat Dec 21, 2013, 11:20am
Subject: Re: Applied WD-40 to my Super Jolly - help with cleaning it out?
 

emradguy Said:

Maybe wrongly so....but I took "etile" as a mispelling for ethyl alcohol (aka ethanol, branded for consumption purposes as Evereclear). Hopefully the OP will, clear this up.

Posted December 20, 2013 link

Hi all, thanks for the answers!

Yes I meant ethyl; sorry about that..

I've spent a great deal of time cleaning it out with the alcohol (and a bit of dishwashing detergent), hopefully it should be okay... Now awaiting for the new burrs to arrive; so hope to re-assemble it in a few days and get it running..

Once done, I'll also run a few kg of some cheap coffee through - both to set in the burrs and to get rid of any immediate wd40 leftovers..

Fingers crossed I'm still alive in a few days ;))
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emradguy
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emradguy
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Posted Sat Dec 21, 2013, 1:02pm
Subject: Re: Applied WD-40 to my Super Jolly - help with cleaning it out?
 

Even if the WD-40 left some residue after your cleaning it out thoroughly, it's not going to kill you. The amount that might leach out into your espresso has got to be so minuscule that I would not expect a high tech scientific lab to even be able to detect it.  Consider it lesson learned and move on.

 
.
Always remember the most important thing is what ends up in your cup!
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
Posts: 7,864
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 Mon Dec 23, 2013, 9:01pm
Subject: Re: Applied WD-40 to my Super Jolly - help with cleaning it out?
 

Dana, well, you are close.

Not to be a trouble maker but when machining parts for food service, special food safe cutting oils are used, not the standard industry oils.
When servicing food contacting machines, the oils and grease are rated by NSF as food safe or light (incidental) contact and petro based non food safe fluids should not be used.

If a machine shop is changing from a general use coolant to a food safe one and the parts are intended to be used in food contact, then the whole machine needs special treatment to remove the residue built up over the years, it is a PAIN I T A!

As a side note, Everclear, while a wonderful product is not available in EVERY state :(  Here in the Peoples Republic of Kalifornia, it is strictly VERBOTEN!
Though if you can get your hands on it, it likely would do a pretty good job as a food safe solvent.

Metal does have poors, just like wood though smaller. It is these small places that retain the oils and solvents. I know I approach any used equipment that I even suspect may have been contaminated, with caution. Everclear or several washings with hot water and oil cutting detergent is in order (as Everclear is not an option here, HOT soapy water it is) before I even start to feel like I might be able to trust using the equipment.

OH, YMMV!!!!!!

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

Feed the newbs, starve the trolls and above all enjoy what you drink!
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dana_leighton
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dana_leighton
Joined: 11 Jan 2002
Posts: 1,962
Location: Fayetteville, AR
Expertise: I live coffee

Espresso: Isomac Relax; Caferina...
Grinder: Macap MXK; Baratza Vario-W;...
Vac Pot: Yama 5-cup
Drip: Technivorm; CCD; Melitta
Roaster: Poppery I w/PID controller
Posted Mon Dec 23, 2013, 11:19pm
Subject: Re: Applied WD-40 to my Super Jolly - help with cleaning it out?
 

I think you are correct on all accounts, Wayne.

 
Dana Leighton - Espresso hack and CoffeeGeek moderator
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