Cleaning off Liquid Wrench

I had a screw badly stuck in an espresso machine. One of the people
trying to fix it used Liquid Wrench on it, which did not help.
I finally managed to remove the screw with a screw extractor. But now
the machine has a petroleum smell to it that is hardly condusive to
making a good cup of coffee.
Does anyone have any ideas on what I could use to flush the LW out of
the machine? So far I have used hot water and non-toxic descaler to no
effect. My espresso manual instructs me not to use vinegar or any
other harsh acids... so I am little at a loss regarding what to try.
Any ideas?
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Washing soda? Baking soda? Both work for removing odours. Mabee use dishwashing detergent first? Either way, it's going to take more than one step. LW is nasty. *** Free account sponsored by *** *** Encrypt your Internet usage with a free VPN account from
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clare at
According to Stavrogin :
Isopropyl alcohol for the first pass or two, then water.
Good Luck, DoN.
Reply to
DoN. Nichols
Or Everclear.
Reply to
Jim Stewart
If the machine has any plastic parts, don't use strong solvents or you may have a really gummed up mess. Since the stuff is petroleum-based, use a strong detergent(Dawn works well on oil) and maybe some sodium bicarbonate solution to flush it. You'll want to get it as hot as you can. May take a bunch of work to get it flushed to where you don't smell it. If there're plastic parts in there, you may never get rid of it. If the unit could be disassembled, it's a whole lot easier soaking the stinky parts than trying to just keep flushing something through the assembled unit. Metal parts you could boil in soda water.
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If your manual says no strong acids (viniger and stronger) what about alkalines? I usually use dishwasher soap in boiling water to clean the coffee and tea stains out of coffee pots and Thermos (R) bottles. In the industrial scene this is referred to as a "high temperature alkaline wash cycle". Works well.
Stavrog> Hello.
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How to clean an espresso machine depends a lot on its construction. If it's a Gaggia machine it has an aluminum boiler, so you really don't want to use anything alkaline (since they dissolve aluminum readily). I'd start with putting 4 tablespoons of fresh lemon juice in the water reservoir and then filling it the rest of the way with clean water, and running that through completely, then flush with 2 more reservoirs full of clean water, then taste the last bit of the second flush. Or try vinegar and water, or citric acid and water, or get some espresso machine cleaner (basically some combination of what I've just described maybe with some sodium carbonate but for about ten times the $$) and run those through followed by copious flushing. Also it depends a lot on how hard your water is - if you have hard water you will need to descale your machine much more often.
Google on flushing espresso machines of your make. There may be some coffeeheads on this NG but not too many.
GWE just scored 80 pounds of green beans if you're into home roasting
Reply to
Grant Erwin
So Grant, did you and dp ever hook up, email or otherwise?
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Yup, he's coming over Sunday to watch me roast some beans .. thanks! - GWE
Reply to
Grant Erwin
Mmmm, I can almost smell that from here.
Hey, if he brings his lovely wife, Nancy, give her a hug from Snarl... you can thank me later. But if dp wants a smooch from me, tell him he's cut off.
No problem, Dennis and Nancy are some of our bestest friends, and you seem like good people too. Have fun!
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"Liquid Wrench" is just kerosene in a pretty can for the gullible.
It will evaporate in a few weeks if you just leave it alone. Or automatic dishwashing detergent or ZEP industrial spray cleaner (purple) from Home Depot are suitable alkali surfactants, if not incompatible with the machine (no aluminum).
Naphtha evaporates quickly and takes off kerosene residues. Find it by that name at a paint store, or as Zippo lighter fluid, Coleman fuel, Goo be Gone, to name a few overpriced packagings.
Reply to
Richard J Kinch

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