Originally Posted by Aiken Drum
When was the last time you serviced the filter? Changed the impeller, impeller cap, o ring etc?
Impeller was replaced I believe just once, many years ago.
I replaced o-rings on the filter lid a few years ago.
I replaced the intake/outake valve 0-rings a few years ago (I have a pack of several) and I just now replaced the outake o-ring (but it wasn't in too bad shape intact and pretty pliable). I can't find any filter log notes from years back.
A couple days ago I replaced the sectional outake tubing (with my own external intake sponge filter) with a solid hose and replaced the sponge: I did this to eliminate any question of air leakage on the intake sections. It made no difference. (Note: today after reconnecting the filter I replaced he sectional outake tubing.
The Filter lid seal I replaced a few years ago. No leakage from the filter heads and it vapor locks so I assume all is good on that seal. I believe the impeller's 'o-ring' was also done at this time. (these are not true 'rings', they are linear sections of rubber).
Last night I shut off the filter because - again - it started making a lot of loud rattling impeller noise.
Today I took the top off the filter Rena/Filstar XP3/XPL and found that the impeller cap was loose(!) and unlocked so the impeller was flopping around. Hum. This was the case a few days ago when the filter was also making a whole lot of noise and not pumping: I thought then I must have forgot to tighten it, a first. I was very careful tightening the cap and reassembling. Now it's obvious that somehow the cap is loosening all on its own: in fact the locking mechanism isn't securing the impeller cap very tightly ... it looks like the mating of the male impeller cap fingers and/or the female receiving slots are not holding very tightly so not a real positive confidant lock. I inspected the impeller and the small o-ring inside is broken and has gotten hard ... I put a few wraps of a rubber band on it temporarily. Anyway reassembling things the filter worked again, but the water pressure is reduced. I'm thinking this filter may be ready for replacement?
UPDATE: Checked back about 3 hrs. after reinserting the impeller and I see the filter's water level has dropped about 4"-5". I released the filter top and let the water level fill back up: turned it back on and now it';s making the loud raspy impeller sound, so I assume the impeller lid came off again. Gah! I have to run out the door so can't reset it now so am shutting it off. Having existential crisis with this filter.