Hi,

I have to insert acid drier cores into a Danfoss Muti Core drier housing.

Should I only insert one acid drier, and three normal drier cores, or should I change all of the cores for acid driers?

I always thought that I should replace all with acid driers, but someone has mentioned that I would only need to change 1 for an acid type, and simply replace the remaining driers for standard.

For info; There is not a great deal of acid, but enough for me to warrant the replacement of the driers and oilo.
The system is R507, marine refrigeration plant for HT, MT and LT (two systems).
Acid analysis came back minimal, and the oil is being changed frequently.

Thanks

Si