Any ideas, better A/C drainage?

[SailingFree44]

This boats ac system is rigged in a “curious” way. The drainage is no good, pan overflows constantly. Any ideas how I could remedy this?

 

[Davidasailor26]

Looks like that might be a Venturi setup. There should be a check valve and a filter to help the Venturi suck the water from the pan without clogging or allowing back flow. I’d start by checking those two parts to make sure they’re not clogged with debris.

 

[SailingFree44]

Thank you, I will look for this.

 

[JamesG161]

Looks like that might be a Venturi setup.

Also note the pinch spot in the pan drain hose.
Jim...

 

[SailingFree44]

Can’t do much about that pinch unfortunately, not lots of work room there

 

[JamesG161]

Can’t do much about that pinch unfortunately, not lots of work room there

Change your hose and shorten the length a bit or your AC pan will overflow for more Damage.
Jim...

 

[capta]

I've had this problem quite a few times. Most often it is the lint from the coils dripping off with the condension and plugging up the drain. The only cure is regular maintenance.
I often run the drain line to a shower sump.