Been takin care of everything in a client's home for years. They canned their pool professional a few months ago - letting the kids do the work. I get the calls when the kids can't figure things out. The Polaris 3900 waS installed years ago given the collection of replaced parts laying around (bag, float etc). Was called in to deal with sweep not moving well - and found the chain had jumped. Replaced tensioner and added chain guard - and sweep is moving again. However, the backup frequency is suspect so I investigated pressure etc and found the following.
- No restrictor disk
- RPM at about 20
- 2 minutes run time and the 30 seconds backup.
DE filter but not sure if the pressure is low or high - so will be doing a backwash to see if this increases pressure/RPM on the sweep.
However, if I get the RPM's up 30%, then I suspect the backup valve cycle time will also speed up 30% - running 80 seconds and then 20 second backup? Clearly - not something that will work. Ideas?
- No restrictor disk
- RPM at about 20
- 2 minutes run time and the 30 seconds backup.
DE filter but not sure if the pressure is low or high - so will be doing a backwash to see if this increases pressure/RPM on the sweep.
However, if I get the RPM's up 30%, then I suspect the backup valve cycle time will also speed up 30% - running 80 seconds and then 20 second backup? Clearly - not something that will work. Ideas?