I am still having trouble with the Polaris 380. I thought it was all fixed but since we replaced the back up valve with the one I found in the attic the darn thing has not been behaving properly. I think the back up valve runs too long. I'd like to know if that run time can be shortened.
The hose connection for the Polaris is well below the swim out shelf and when the back up valve runs now, it sends the Polaris up onto the shelf or it lands on top of the hose connection and gets stuck.
The last back up valve failed when it cracked. I believe it was stuck on the swim out shelf or the tail was stuck on a rock and the valve tore itself open. If the Polaris stayed on the floor and did not climb this would not have happened.
I do not have a good understanding of the fine tuning that occurs via the position of the float valve and the direction of the thrust jet. I've had float far forward or far backward, jet to 11, 2, center and in between. It still hits the surface a lot and that is when the tail scrubber can get caught on the rock coping.
So, the questions are three
1) can I shorten the back up valve run time?
2) how do I keep the Polaris on the floor more?
3) is there a recommended procedure for fine tuning?