Is my sand filter sized right?

[PoolDoc]

DE will give you clearer water, and will reduce your pools tendency to get algae. BUT, if you do get algae, cleaning up is MUCH easier with a sand filter -- one algae episode can result in as much DE use as you'd otherwise use in a year. So, I don't recommend DE for folks who tend to neglect their pool every so often.

[TheGoose]

All great advice. I think I'm gonna leave my pump/tank alone and go with the 2-speed motor on my existing pump.

[TheGoose]

FYI I installed the 2-speed motor a few days ago. Now I'm circulating the pool, which turned into a swamp while the motor was out.

I added about 25 gallons of bleach and am backwashing almost daily. I haven't yet tried the low speed because I don't have a toggle switch yet.

The motor came with three connections : L1, L2, and A. The diagram was stated so that you could connect I believe L1 and A up it would be low speed, L1 and L2 would be full speed.

Am I correct in thinking that a jumper between L2 and A would allow me to switch the speeds? In other words, incoming power to L1 and A, with a jumper with toggle switch between A and L2 to switch between low/high.

[PoolDoc]

Please send the exact motor make and model, so we can look up the manual and diagram -- I don't want to answer, and I don't want anyone else to answer, without seeing that diagram. You could lose a new motor that way!

[TheGoose]

AO Smith

1 HP 230V B2982

http://www.aosmithmotors.com/product...69&terms=B2982

I am fairly competent when it comes to installing things like controls and motors so you don't have to think I'm gonna fry myself doing this.

I guess we can't easily post pictures but high is L1, then you have L2, and then you have A for low speed. I'm thinking that I should connect one incoming wire to A and one to L2. For full speed I install a switch between A and L1.

[PoolDoc]

Sorry, if I offended you . . . but I've worked with too many electricians who couldn't wire a DPDT switch for a 2 speed pump, for me to take anything for granted. Here's the connection drawing:



Based on that drawing, yes, can toggle between high & low, and switch speeds. Remember, that you need a 15A MOTOR or INDUCTION rated switch. And, if you place the switch external to the motor, you need to attach a warning label indicating that the switch does NOT disconnect power to the motor. Intermatic has a DPDT time clock you can use, that's not much more than an SPDT clock.

[TheGoose]

That's the picture I was going to post.

You didn't offend me, I was just trying to relay that you don't have to do the typical dummy comments like "shut off the breakers" and such. I work with pumps/motors everyday, some of which are thousands of horsepower.

Thanks for the warning about the 15 amp switch, it makes sense.