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Cook Chill Kettle-Black Film?


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#1 therecipe

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Posted 27 May 2015 - 07:59 PM

We are coming up with a black film on out cook chill kettles.  By appearance they look clean but when wiped down a black film show on the cloth. No sanitation process have changed and no new products have been introduced.  We are speculating oxidation of the stainless steel kettle? Has anyone had experience with this issue and have suggestions on how to resolve it?



#2 brianweber

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Posted 27 May 2015 - 09:00 PM

There is a lot of information here about stainless discoloration/corrosion:

 

http://www.mcnallyin...4-html/4-1.html

 

Hope it helps.


Brian


#3 Katerine

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Posted 03 June 2015 - 02:29 PM

Have you tried to check when was the last time you passivated? if you need to do it you can check the lick below for a procedure:

 

http://www.mmsonline.com/articles/how-to-passivate-stainless-steel-parts

 

I hope this information can help you.

 

Katerine






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