Chap Four: AIR BLOWER:
Few models have an air blower system besides the water flowed plumbing. It is
separate then from the normal forced water jets. The blower is turned on and the
air is forced into the spa as bubbles. Between the air blower and the method of
air disbursement is a looping system to stop water from flowing back to the air
blower. Typically either two loops of flex hose or 2 rigid pipe loops and a check
valve will stop any water from reaching the blower.
When building the spa one of two common methods was used: either one or
more channels are built into the bottom of the spa. Then holes are drilled along
these channels. When the air blower is turned on it pushes air into the channels.
The other common method is installing a separate piping system with small
nozzles along the bottom of the seating area and applying air into those nozzles.
Electronic spas typically have an automatic blowout at least a couple of times a
day. The spa will turn on several times a day and run for a couple minutes. This
will fill the channels with air. When the blower turns off the cleaner sanitized
water will flow back into the channels and help keep them clean.
Removal:
The blower is either 110v or 220v depending on the model. You must match
voltage. Most are 1hp blowers.
To remove is easy. There usually is one screw holding the blower to the
plumbing. There might also be a hose strap tighten around the area. IF so,
loosen.
Once both screw and strap are removed, loosen, the blower lifts out.
Replacement blowers might have a cord to splice in to the older cord or include a
cord you simply plug into the control box.
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