I´ve checked water valves, water and air pressure are ok, 3 way valve operate correctly, nozzles in bowl changed, elec motor is not frequency controlled, the strange thing is that when the pressure pt4 is not raising after discharge there is additional fill of displacement water and after that PT4 i...

Thank you guys for reply but the problem is still not solved, there´s no springs in this type of purifier. I suspected bowl speed but from standstill and during first two discharge cycles there´s no problem with leaking. There´s no rpm indicator but current seems to be the same as on the second puri...

Hello gentlemen, I have onboard alfa laval pu150 lub oil separator, and following problem with it. After start from standstill the separator is running without any problem, is not leaking, keeps the pressure, but after first discharge it starts to loosing oil into the sludge but discharge process lo...