On board our ship we have two MMPX404 purifiers.
After these purifiers have been dismantled/cleaned and assembled again they don't want to close the bowl when put in operation.
All o-rings have been changed using an alfa laval service kit.
After opening the bowl several times and removing/checking of the o-rings it will all of a sudden work fine again.
We are wondering if someone has any idea why this problem occurs?
I didn't find the right solution from the internet.
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