mrblah

Just inherited a hotsprings vanguard, 2008 model from a coworkier, I've fixed all but one remaining broken part on the tub. The air intake for the manifold is plugged somewhere, if I remove a valve all of the other valves function, but when the vavles are installed it's not able to draw air. Where is the air intake located? The manual is not too helpful and only has vague descriptions of the major parts, nothing about the air intake. also does anyone know how many mg/hr the ozone generator is? Ours is broken, PO plugged the output port and hooked the air line to the intake?!?!? lol