I've got a 1994 Cal Spa VIP series tub. It was given to me used and I have been working on getting it functional.
I'm not sure what to expect from the air control. there is a single lever that connects to a tube that runs into the tub, turning the lever does not appear to do anything. I do not get bubble from the jets and I do not feel any suction from the tube when I disconnect it from the lever control. I do get bubble from some small air injector caps at the bottom of the tub.
What should I expect to happen?