question about start up

[benalexe]

How come the few times I have drained my spa my thrid pump, the one that controls the 2 lounge seats get air locked.  It is a real pain in the neck because it means I have to unscrew and take off the panels in my tub which is a real pain. Then open the union and let the air our.

Any reason this always happens?

On a side not, are all spa a pain in the neck to take off the pannels?

[Gary]

The pump is higher then the suction or they have too much pipe between the suction and the pump and there is a high spot.  If that pump has a diverter valve on it there is an easier way to relieve the air, simply loosen the the top of the diverter valve and that should clear it.