Bean animal main drain syphon

[roggy23]

Why does my main drain occasional have a burst of flow of air/bubbles?
It's quiet for a minute then slosh here it comes again.

 

[Lost in the Sauce]

Likely needs tuned. Do you have valves on the return and main drain?

 

[roggy23]

Likely needs tuned. Do you have valves on the return and main drain?

Just the main

 

[WVNed]

Sometimes the water coming over the weir generates bubbles and they get sucked into the drain.

The other possibility is a vortex is forming and letting air into the drain.

I have a 2 inch full syphon drain that sprays fine bubbles all the time. The joints down in the sump arent glued and it is sucking air in through one of them.

 

[roggy23]

Sometimes the water coming over the weir generates bubbles and they get sucked into the drain.

The other possibility is a vortex is forming and letting air into the drain.

I have a 2 inch full syphon drain that sprays fine bubbles all the time. The joints down in the sump arent glued and it is sucking air in through one of them.

My joints down in the sump are not glued either..really hard to even get to