Replacement motor for Polaris QT Blower

[Illupo]

As you can see by my profile, I have an inground spa/pool, 1800 gallons which was installed by the original owners back in 1986 or so. The spa is equipped with a Polaris QT motor which activates bubbles through the floor or the seat. It still works, but out of the 34 (3/16ths) outlets in the floor, about a third of them do not work anymore. At first, I had thought the holes were plugged, but I checked and they are not. My theory now is that the motor is weak/failing and I would like to replace it.

Here is my problem. I have NO paperwork on this motor and the labeling on the motor itself has long been eaten away by the Arizona sun. Specifically, I don't know if it is a 120 or 240 volt motor. I am ASSUMING that it is a 120 volt as the switch that runs to it reads "120 Volts Only". Is that a reasonable assumption?

My next problem is that I don't know how many horsepower it is. I have found the many sites on how to calculate the appropriate size of a blower motor, but I do not have some of the information required. From waters surface to the floor outlets is 40 inches and there is approximately 12 feet of 2 inch pipe from the blower assembly to the water line, but I have no way of knowing how many elbows or check valves are underneath the concrete decking. There are at least two elbows changing the direction of flow from the vertical pipe upon which sits the motor to the floor. I can see water in the pipes when I remove the valves...does that mean that there are no check valves?

Anyone with any ideas on how to proceed?

 

[kimkats]

A picture might be helpful as some of the people on this board have SKILLS with things like this. We will go from there.

 

[ajw22]

Get a voltmeter and measure voltage at the switch or pump.

Type of CB and wiring at switch or pump differs with voltage. Post pics for help.

 

[igneous]

Take a pic of the label on the blower with your phone. It should be where the power comes in. This is what I had to do when I replaced mine because you can zoom the pic and get the voltage and HP. My advice is to get a Air Supply Silencer, which is what I replaced my old dead one with and it works great. You prolly have a 2 hp if you have that many jets in your spa, you may even have a 2.5. They are easy to install and come with a check valve for 2" pipe. Just cut your pipe off with pvc cutters or hack saw, then put check valve on and blower on top. I didn't use any pvc glue because the check valve went down far enough to keep it secure. Wire it up and you're ready for spa.