Cleaning inside copper coil to remove lime??

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Old 02-02-12, 06:30 PM
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Cleaning inside copper coil to remove lime??

I've pulled the copper coil out of a HS Tarm Ot35 boiler which is plugged with lime after 20 some years and wondering if muraic acid would eat the obstruction out of the copper? I've tried vinegar that helped a little but didn't get it all. any ideas would be appreiciated thanks: Dave
 
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Old 02-02-12, 06:45 PM
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Not sure what acid they use... maybe phosphoric or oxalic ? You wnat something that won't eat the copper as well... I don't know if muriatic qualifies or not... I've never done it myself.

It appears that it's OK to use, if you can believe anything you read on the internet!

But why go to all the trouble of taking the coil out of the boiler? You could have just put some fittings on the pipes and saved a lot of trouble.
 
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Old 02-02-12, 06:54 PM
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I pulled the boiler out of the house,It's in my shop I'm in the process of re building it. The bottom rusted out 1/8" steel, I'm welding 1/4" in its place. It's just a winter project now
 
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Old 02-02-12, 08:11 PM
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Ohhh, that's different then!

I've read some stories that guys have used 1/6 HP submersible pumps from HD or Lowes... and claim that the acid solution don't hurt the pump at all... mix up a 5 gallon bucket of acid and water, hook the pump up to the coil and let it run...

BE CAREFUL! BE SAFE!
 
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