Posted: 8/9/2011 2:34:45 PM EDT
I have a 1 1/2 HP 220v pump hooked to my swimming pool. It is so fracking hot I am having to run it 24/7 to keep the water nice. Is there such a thing as a 220V speed controller for a pump? I was wondering if I could dial it down and save a few bucks  .
I wonder if running the pump slower than rated speed will screw it up. |
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Quoted:
I have a 1 1/2 HP 220v pump hooked to my swimming pool. It is so fracking hot I am having to run it 24/7 to keep the water nice. Is there such a thing as a 220V speed controller for a pump? I was wondering if I could dial it down and save a few bucks . I wonder if running the pump slower than rated speed will screw it up.short answer is "not easily". long answer is a VFD but buying and installing one for that size motor it will completely swamp your "savings". http://en.wikipedia.org/wiki/Variable-frequency_drive why don't you just run it half the day, and save half the money? ar-jedi |
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Quoted:
I have a 1 1/2 HP 220v pump hooked to my swimming pool. It is so fracking hot I am having to run it 24/7 to keep the water nice. Is there such a thing as a 220V speed controller for a pump? I was wondering if I could dial it down and save a few bucks .
I wonder if running the pump slower than rated speed will screw it up. Buy ice? |
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Motors run at a standard speed its when you want a slower speed the motor is wound differently to slow it down and it uses more power.
Pool motors are a sealed motor with no external fan. Can they make they heavy duty and last for 20 years? Sure but how they gonna sell you a motor every 2 years. |
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dirt? floating on water? how the fuck? you can reduce water tension by adding liquid soap. Put a very small amount into a bottle that you can make squirt [that's what she said], then fill the rest with water. Shake up your very diluted soapy mixture. Take the bottle with soapy mixture to the pool and walk the length of the pool while squirting the soap into the center of the pool... basically cutting the pool in half with the soapy stream. This will cause everything to float to the edges within a few minutes and you can use your skimmer to gather it up. |
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It might be a motor you can run at 120 volts. You would have to look at the wiring diagram. correct, it is possible the motor windings can be wired for 120Vac. but... an induction motor will consume the same power at 120Vac as it does at 240Vac. halve the voltage, and the current doubles. ergo, the power stays the same. ar-jedi |
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Motors run at a standard speed its when you want a slower speed the motor is wound differently to slow it down and it uses more power. induction motors run at an RPM which is the synchronous to the line frequency minus what is known as the "slip". a true 2 pole synchronous motor would run at 3600 RPM, but a 2 pole induction motor such as the type used for pool pumps runs at 3450 RPM. same for a 4 pole, synchronous runs at 1800 RPM but a 4 pole induction motor runs at 1750 RPM. ar-jedi |
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Is there such a thing as a 220V speed controller for a pump? I was wondering if I could dial it down and save a few bucks i found the product you are looking for: http://www.electricmotorwarehouse.com/V_green.htm 
ar-jedi |