Cleaning an Espresso Machine Copper Tank with ACID

I was asked if I could clean up this tank to turn it into a display for a coffee shop that is near opening. I said I would be glad to do it.
I dipped it in the acid bath to do a quick job. I did scrub it down a little before hand to get some of the caked on espresso residue off. I didn't get it all but I got 99% of it.
For those of you concerned about safety I was wearing a full face shield and obviously a protective glove. I also had a 5 gallon bucket of water and a water hose that was constantly running so I could immediately clean any acid that may have spilled. I spilled none, BTW.
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[@careyrook4699]

That cleaned up real good.

[@user-dx6pt9oo6h]

Good job 👍

[@lj6278]

That's impressive ;)

[@ukeboy57]

The issue with any acid is that it eats away everywhere, even hidden areas. We had used it for a while but later found it caused failures in small parts (tubes) and smaller tanks with thin walls. We are talking about boilers! Even a 1/2 bar tank explosion will wreck everything on the store. It's banned in our repair shop. Don't soak over night. Keep checking parts. Brush off residue. Soak in fresh water. Wire brush to polish. Discard acid according to local regulations. Be safe. Aloha, Mark

[@paulusandronicus]

"1/2 bar tank explosion will wreck everything on the store" lol...bit of an exaggeration! its not a pipe bomb man.

[@ukeboy57]

Maybe not but you may lose your coffee waiting line. Seen "Blow outs Every month" Fortunately the safety valve blows. I also witnessed a low pressure blow with a vacuum valve removal (by rookie) too impatient to wait. the 'old man (me) just grins. @@paulusandronicus

[@hyedenny]

You took it out of the acid way too early! When it stops releasing carbon dioxide gas (the bubbling), is when all the scale (calcium carbonate, etc) is gone. Just because it's clean on the outside by no means indicates that the inside is clean and descaled -- it still obviously had considerable deposits inside.
The Barkeeper's Friend has oxalic acid and a pretty aggressive abrasive in it.

[@TwoHandsRestorations]

You are correct. I work at a coffee shop and I do repairs on espresso machines. This was being shined up for the sole purpose of dispaying in a coffee shop. Not conerned with the inside.

[@hagen-heinrichwaller3226]

What do you use to clean up the inside then?@@TwoHandsRestorations

[@Wides911]

thanks cool Video What kind of acid / descaler do you use for brass / copper boilers, if necessary. Nickel content ? What dosages ? How do you ensure a gentle descaling or promote it. How do you approach the topic of erosion after decalcification and neutralization of the components ? How of and how do you rinse ?Is amidosulfonic acid more suitable for copper or a mixture of citric acid/amidosulfonic acid ? Do you have any experience with Calcinet? What is in your opinion, copper / brass boiler is the most gentle descaling for reuse in the machine for the preparation of coffee ?

[@bobcervante3801]

Pair of rubber boots would be sensible.

[@gartv4141]

what is the powder that you use may i know?

[@citrus5984]

What acid is being used?

[@anvarboncafedileep553]

Hydraulic acid and water missing ratio?

[@estrobedaaxios2329]

Won't that completely destroy the nickel (I think) coating inside that makes the boiler food safe?

[@mohamedzakaria6060]

What is that powder which you used at the end please..? And waiting for the other video which you will show us how to make it more shiny thanks for sharing with us 🤗🤗🤗

[@TwoHandsRestorations]

The powder is called "Barkeepers Friend". It can be purchased at most hardware stores or on Amazon. I was just doing the initial clean-up for a friend of mine. I turned it over to him after I got the majority of grime off of it. There will be no more videos on this tank. Sorry. Thanks for watching

[@mohamedzakaria6060]

Thank you very much

[@wuddadid]

Read the label you moron

[@mohamedzakaria6060]

@@wuddadid didn't ask you asshole 😂

[@krzysztofbaran9342]

What a it it is

[@badriLaPech]

Hydrochloric acid, with 2% of water, only to use with copper

[@omdintegral104]

Acid type?

[@ashkaibi1]

Hydrochloric acid

[@LFOSyncToo]

muriatic acid as described in the video