![]() ![]() The right-hand switch and plastic tube controls the speed of the water circulating pump.Ībove we see these two plastic tubes at their connection to the electrical controls below the tub. You can see the pneumatic tub-rim blower on / off button at the white arrow on the right side our photo above.īelow at left in the photo taken from underneath the tub rim we see the plastic tube that connects the pneumatic switch on the tub side to the electrical control that in turn will switch on the blower motor. This feature, found on hot tubs and some other spas may be absent from a simpler whirlpool bath or jetted tub.
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