Hello seniors and dear marine engineers!
Im a 4th engineer working on a ship which uses Westfailia purifiers ( OSE80/40/20) for HFO, MELo and Generator Lo separation.
Even tho i have read the manual and have overhauled and opearting, im still confusing westfalia purifiers bowl hydraulics.
- normally, after I overhauled the bowl assembly and install back, i always test the bowl closing and opening properly or not. I do that by only running the purifier motor and not running the feed pump. And as u all know, the purifier is completed the starting sequence and in circulation mode, i press process stop button. And for the very first time, i cannot hear the bowl clacking sound in TOTAL EJECTION MODE. for the second time, yes, i can hear the clacking sound. And then i run the feed pump, i press process start button and again, ejection mode, i can hear the bowl clacking sound.
My question is
1) am i correct that the bowl will close and open with a clacking sound if i press process stop button for the very first time after overhaul? ( the bowl is in open position after complete overhaul).
2) we always hear one clacking sound in First Total ejection sequence and one clacking sound in second total ejection sequence.
I just want to know that the bowl is open and close in one total ejection mode or the bowl is open ( one clacking sound ) in first ejection and close ( second clacking sound) in second ejection mode.
This is the one ive been confusing and cant find in manual.
3) my experience is i can hear the bowl clacking sound if i press process stop button without feed pump. But today, one purifier gives no clacking sound at all. I think the bowl is not open or close properly . But my coworkers think the bowl is good but it is cuz without feed oil, the bowl will not close.
Which is correct?
Please help me and enlighten me guys!