Potential Suction side leak in Work

[aggiejet]

Moved from HERE

I think I may have same issue. I have air bubbles in my strainer pot and only have a skim line for circulation. (I paid a company to find the leak in the drain side, but they couldn’t find one.) I replaced my skimmer pot because it was cracked at the bottom and put a new lid o-ring on. It’s better, but still have the bubbles. Last night I was hearing that “tumbling rocks” sound and as of now have mitigated that sound. These steps also made a gigantic improvement in my vacuum suction and bubbles in the discharge line.

I have attached a picture of what I’m seeing now in the pot. Ideally, there should be zero air bubbles in the pot, is that correct?

 

[1poolman1]

Moved from HERE

I think I may have same issue. I have air bubbles in my strainer pot and only have a skim line for circulation. (I paid a company to find the leak in the drain side, but they couldn’t find one.) I replaced my skimmer pot because it was cracked at the bottom and put a new lid o-ring on. It’s better, but still have the bubbles. Last night I was hearing that “tumbling rocks” sound and as of now have mitigated that sound. These steps also made a gigantic improvement in my vacuum suction and bubbles in the discharge line.

I have attached a picture of what I’m seeing now in the pot. Ideally, there should be zero air bubbles in the pot, is that correct?

"Tumbling rocks" sound was, most likely, cavitation. The pump couldn't get enough water. Tiny bubbles like that aren't usually an issue.

 

[aggiejet]

"Tumbling rocks" sound was, most likely, cavitation. The pump couldn't get enough water. Tiny bubbles like that aren't usually an issue

What I don’t understand is that I really wasn’t having any problems per se, until sometime in the last couple of days I could hear the “tumbling rocks” sound. So this morning I took the pump pot off of the motor and ran just the motor to make sure the sound wasn’t a bearing or something in the motor. Motor, of course, was quiet. So I put everything back together and tumbling rock sound was gone. Kinda weird.