Energy Recovery Oil Pump traits?

[Todd Gross]

Originally Posted by SSDiv6

Does it have a bypass?
The wrong microns and lack of bypass can create the issue.

That was a good suggestion and the owner could not come up with the micron spec. It does have a bypass, but again, don't know the rating.
I advised him to remove the cartridge and start it to see if there was a difference.
He just reported back, no change. I'll call Vern again tomorrow.