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Mas985 Granted the air leak is the root cause - but I suspect the problem is in the construction of this particualar lid or assembly. The pump did this right from day 1. However, I disagree with the need to shut the pump off after only 3 seconds. If you do not have prime mode enabled, there...

Mass985 The prime sensitivity and maximum priming time are not the problem that shuts down the pum. If you refer to the manual that you provided the link to on page 17 you will see the following Maximum Priming Time: The Maximum Priming Time can be set from 1 minute to 30 minutes. The default...

None of this would be a problem if the darn thing would just allow the pump to prime for more than 3 seconds before shutting off on dry alarm

Maybe the body is warped - the seal looks good - but you can only turn the lid 1/4 turn between off and tight and I just dont think that there is enough O ring compression in the full tight position. After a full basket prime, if I drop to 1800 rpm I loose half the water in the basket in half...

Carlscan I have seen about 5 other pentair pump owners pools in my area - they all run with half baskets at low speed - every one of them

Fishunt Its true on all of these Pentair variable speed pumps that the pump on low speeds runs with only a half filled strainer. As was claimed by Site Admin in this post, it may be an accumulation of micro air bubble and the low turbularnce in the basket not pushing the air out of the system...

I cleaned and lubed the filters O ring at the start of this season a couple of weeks ago. I inspected the O ring and there are no nicks or bad spots on it. The pump O ring is another matter. Its my opinion that the cover and sealing system on this particular pump is the worst I have ever...

Mas985 So if there is an air leak, and check valves are present, and no water is visually leaking out of the system, are you saying that the air leak allows the water to siphon out of the system through the pump and the filter back to the pool? If this is the case, from my previous post, would...

Admin I understand your dissolved air disucssion. What I do not understand is why after the pump has been shut off (with basket full of water), and with check valves between the pool and the pump, the basket drains below the inlet port level, almost to the very bottom of the trap. This would...

To Admin Thank you for your response. In order for the pump to prime fully (as defined by evacuating all the air from the strainer) I find that I need a max speed setting of at least 2500 RPM. Once filled, I can drop the speed down to about 1750 without much air accumulating over a typical run...

Oh a few other details: I can uninstall the pump and put it right beside the pool with a pipe straight down into the water. Same thing - if its left overnight it faults out with dry prime alarm the next day. So much for my piping system and their lame excuse.

I have had a pool for over 10 years. Last season I purchased a brand new Pentair Intellflow Variable Speed Pump Part # 011018 which was just new on the market at that time. I installed it in my existing plumbing and almost immediately had a problem with sporatic priming alarms. I use the...