I’m trying to trouble shoot my Hayward Max-Flo 2 Pump. Simply, it will not self prime itself every time it is switched on. And, when it does prime, after a while it will loose it’s prime and will not prime itself again. When this happens it will run dry for a while, until i notice and shut it down. Do I need to replace the whole pump or maybe the impeller is melted/misshaped and needs replacement? Do you have any suggestions? If it needs replacement, could you suggest a 1 HP pump that would be right (as this pump is not in production anymore)?
Self-priming pump will not self-prime
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- Last Post 27 February 2018
I’m having the same problem. I ordered and installed a new pump from you guys. I have a Sta-Rite 1 1/2 hp motor. It ran great for a year but now it will not hold prime. I did not use RTV and do not really know where to exactly put this sealant on. I guess it could be several things but I’ll check to see if any air leaks are present. It does get so so close to priming and getting ready to take.. only to fail. I crossed my fingers two times, then gave up. It’s pretty cold here so I hope my skimmer lines don’t freeze, oh well. Nothing is easy it seems.
Steve - Check the same areas listed above and you should be able to find a possible air leak.
Ok, I’ll do that, but my leak seems to be at the bottom. I’m thinking the the seal plate and motor might be the reason. Thanks so much for the prompt forum reply!
You're welcome. If the pump is leaking near the seal plate and motor, I would recommend replacing the shaft seal and housing gasket/o-ring.
Ok, I replaced my shaft seal and then pump that I bought from you guys about a year ago just would hum briefy ( like 2 or 3 seconds) then stop humming. it wouldn’t start at all. So I called your help line and he (your tech supporting) guy said I needed a new start capicator, so I just installed it. Btw, I did put some RTV on the shaft seal. I think I put it on the right place, but not 100% sure,.... but this would not be the cause of motor not starting and running.
Well, it does the same thing happened again. I really to get my pump running again soon.
What do you think?
Hello Steve - If you replaced the capacitor and it's still not working, I would replace the motor. What is the model number of the pump?
My pump is a A .O. Smith 1 and 1/2 HP square flange full rate motor. (item SQ1152)
i bought it from you guys in the fall of 2016 and it ran good until now.
Guess I need to buy another one. i have nt replaced the "Run Capacitor" yet, just replaced the "Start Capacitor" only