After you clean your system I would recommend using a self-cleaning water filter like the Forsta filters.
It will keep your system clean from particles in the future.
www.forstafilters.com
You might want to ask them to size the filter for you.
A self-cleaning water filter should be placed on the discharge of the pump.
I think Forsta filters makes one that can handle this flow
http://www.forstafilters.com/industries-industrial-petrochemical.html
Good luck
