Does anyone have any experience with the Nidec Neptune 1.65 variable speed motor

[drsipe]

I'm looking for a more cost effective way to convert to a variable speed pool pump.

I currently have a Hayward 1 HP Super Pump SP2607X10. My piping is 1 1/5", so I'm not sure I want to put in too large of a pump.

I have looked at the Century EVC165, and it appears to be what would would want, with the exception of an auxiliary contactor for my SWG, I know I can use a timer for the SWG, and rely on the flow switch as a failsafe, but I prefer to prevent the SWG from getting power without the pump at sufficient speed.

The real question here is the Nidec Neptune 1.65 variable speed motor, it is variable speed and has an auxiliary contact for the SWG. I have looked for reviews and found very few with the exception of the reviews on the sales and marketing sites, which I usually do not take into account due to the source bias.

I'm asking if anyone on this site has any real experience with the Nidec Neptune variable speed pumps especially the 1.65 HP model NPTQ135?

 

[1poolman1]

I'm looking for a more cost effective way to convert to a variable speed pool pump.

I currently have a Hayward 1 HP Super Pump SP2607X10. My piping is 1 1/5", so I'm not sure I want to put in too large of a pump.

I have looked at the Century EVC165, and it appears to be what would would want, with the exception of an auxiliary contactor for my SWG, I know I can use a timer for the SWG, and rely on the flow switch as a failsafe, but I prefer to prevent the SWG from getting power without the pump at sufficient speed.

The real question here is the Nidec Neptune 1.65 variable speed motor, it is variable speed and has an auxiliary contact for the SWG. I have looked for reviews and found very few with the exception of the reviews on the sales and marketing sites, which I usually do not take into account due to the source bias.

I'm asking if anyone on this site has any real experience with the Nidec Neptune variable speed pumps especially the 1.65 HP model NPTQ135?

That is a great motor. I've installed several of the 1.65 and 2.7 (which is a better alternative if you also get a 2hp impeller for that pump).
The problem with the auxiliary relay is that it only actuates at 2100 RPM, which is higher that you would want with a VSP and I have never found a way to change that speed. Haven't installed one in about six months, so something may have changed, but I've not heard that.
With a VSP, you want to use the lowest RPM (+/- 500) that will operate the SWG, for the longest time. Having to run it at 2000 RPM defeats the purpose.
It is always better to have the SWG on its own time clock, with its "ON" time set to sometime after the main pump starts and its "OFF" a bit before the main pump shuts off.
Your Super Pump would not use a NPTQ motor, but a NPTT one. There is no 135. There is a 125, but it does not have the auxiliary relay.
If you decide to use the 1.65 or 2.7,and the auxiliary relay, be aware that it only "breaks" one side of a 240V load so one wire at the device (SWG) will always be hot unless a breaker is turned off.
Also, using either of those motors on the small impeller you now have will mean that you will have to run the pump at a higher RPM to keep your water clean. Defeats the purpose of a VSP.

 

[laprjns]

I have looked at the Century EVC165, and it appears to be what would would want, with the exception of an auxiliary contactor for my SWG, I know I can use a timer for the SWG, and rely on the flow switch as a failsafe, but I prefer to prevent the SWG from getting power without the pump at sufficient speed.

You could use a Current Sensing Relay.

 

[drsipe]

That is a great motor. I've installed several of the 1.65 and 2.7 (which is a better alternative if you also get a 2hp impeller for that pump).
The problem with the auxiliary relay is that it only actuates at 2100 RPM, which is higher that you would want with a VSP and I have never found a way to change that speed. Haven't installed one in about six months, so something may have changed, but I've not heard that.
With a VSP, you want to use the lowest RPM (+/- 500) that will operate the SWG, for the longest time. Having to run it at 2000 RPM defeats the purpose.
It is always better to have the SWG on its own time clock, with its "ON" time set to sometime after the main pump starts and its "OFF" a bit before the main pump shuts off.
Your Super Pump would not use a NPTQ motor, but a NPTT one. There is no 135. There is a 125, but it does not have the auxiliary relay.
If you decide to use the 1.65 or 2.7,and the auxiliary relay, be aware that it only "breaks" one side of a 240V load so one wire at the device (SWG) will always be hot unless a breaker is turned off.
Also, using either of those motors on the small impeller you now have will mean that you will have to run the pump at a higher RPM to keep your water clean. Defeats the purpose of a VSP.

Thank you for the information. the only reason that I was more favorably on the Nidec motor was the auxiliary relay. Now knowing that the pump has to be above 2100 RPM and that the relay only breaks one side of the circuit, has made me rethink my options. INYO pools sells a kit which contains the century 1.65 VSP motor, seal kit and an impeller for the pump. This may be a better option for me. With this I would need to use my existing timer to control the run time on the SWG.