Just moved into a new house and I was inspecting the spa blower. It is a Polaris QT 400. The wire conduit
was wired into the a/c box but the wires were not connected. This led me to believe there might be an issue with the unit. I removed it from the wall an noticed a sound of rattling from it. So I disassembled it on the bench to find 2 rusty screws and a washer inside. The give the appearance of mounting / assembly screws not from the unit. Si I assume some workman somehow dropped them in there.
Anyway-- The motor looks clean and all connections are not indicative of electrical issues, with exception of the ground which seems to have been loose due to an undersized screw [possible what fell into the unit? ] so I will button it up and wire it in and prey all is good.
One thing that is very evident is that all the foam [air filter? Baffles?] are dry rotted and turn to dust at the slightest touch. I have removed and cleaned all of it. After looking online for replacements I gave up. None are sold. There not even on the schematics.
So what I would like to know is:
Is it needed?
Can I operate without them?
Can I use A/C Fiberglass insulation?
Or is there something else you recommend?