Air in One Return Line

[gmlasher]

So I have a Hayward cartridge filter system. I cleaned it at start up, reassembled, lubed the gasket which is 1 year old, and tightened the central clamp.

I also have a Hayward in line chlorination system. I opened it, replaced the cover o ring, lubed it and resealed it. Also replaced one of the nipple connections with all new parts.

I also re- lubed the pump basket gasket.

problem is I lose prime every off cycle and there are massive jets of air coming from the return physically nearest the pump.

I have sprayed dish soap on every Union and seal and can see no leaks but I still have the issue. Any ideas

 

[Texas Splash]

Welcome to TFP! The dish soap might help if air was getting pushed outwards, but with a suction leak, it gets pulled IN, so you may not see much with the soap. Two things to keep in mind:
1 - Anytime the pump pot looses water when the system is OFF, you have an air leak somewhere - anywhere on that equipment pad. Leave nothing to chance. Every seal, fitting, union, gasket, etc. If you checked it once, check it again. It only takes a very tiny spot. When you shut the system off, listen carefully for any hints of a sound.
2 - Air bubbles at the return jet(s) is often times the sign of a suction side leak, basically from the pool skimmer to the pump. So check all of those areas as well. I'll post a link below to help you get started on that.

Let us know if you make any progress or need more help.

Suction Side Air Leaks

If you see air bubbles coming out of the return lines in your pool, you likely have a leak. Some signs that a suction side plumbing leak has occurred include: Read more

www.troublefreepool.com