Which Replacement Pump Motor???

[mas985]

Usually, two dashes in the Service Factor mean that it is close to 1.0 which is indicative of an uprated motor. However, the amps suggest a full rated motor so that part is uncertain. I couldn't find a cross reference but did you ask the dealers if they cross referenced the part # with the motors or did they guess?

Also, 56y frame has a motor body 1/2" wider in diameter than the 48y but in most cases they are interchangable.

[vgg659]

As best I can tell, the old motor is presently known as a B848. The two speed equivalent is the B982. So, I placed it on order today.

I have a PoolPilot Digital, so I could run the two speed motor via the PoolPilot. But, the current motor is controlled via a timer and DPST switch. I like the simplicity of this approach, so I will likely replace the current switch with a DPDT variety, and leave the wiring as is.

I plan on running the pool in low speed, and only using the high speed for back washing, etc.

I'll update this post regarding my installation experience.

[vgg659]

I have replaced the motor on my Ultraflow pump. The replacement motor I selected is the AO Smith B2982 two speed high efficiency motor (1hp, 1.65 SF). This motor consumes ~1.4 amps in low speed.

I replaced the seal and o-rings, too.

AO Smith has some information on these high efficiency motors at http://www.aosmithmotors.com/Products/E-Plus/2949.pdf.

I ended up using a SPDT toggle switch mounted in a weather proof box attached to the motor housing. The toggle switch and boot was purchased from Grangier for ~$5, and the remaining electrical parts from Lowes for ~$10.

By my estimates, I will save enough in electricity cost to completely pay for this motor in one season.