What Does Service Factor Mean On Pool Pumps

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• #one

What exactly is "service cistron"?

I was looking around, and plant this page-

http://www.electricmotorwarehouse.com/pool_pumps.htm

Comparing the standard pumps to the loftier efficiency pumps, the high efficiency have higher service factors. But they seem to use more amps, which is confusing me, but my understanding of amps/volts etc left me long ago

I assume a college service gene is desireable?

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• #2

No, service factor (SF) in and of it's self doesn't matter.

At that place are several different definitions of HP. You multiply the listed HP by the SF to get the brake horsepower, which is what actually gets applied to the water. Information technology's all a morass of different standards and deciptive marketing. Run across WikiPedia for some background. Some manufacturers sell motors of various HP that are actually however motor, merely with different SF.

What you really want to compare is amps vs GPM at the dynamic head you look to exist running at.

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• #iii

Thanks.

What you actually desire to compare is amps vs GPM at the dynamic head yous expect to be running at.

And I assume the lower the amps for the same GPM at the same dynamic head, the less free energy used and more efficient the pump?

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• #v

'Service factor' is a number that pump manufacuters use to inflate the HP of a particular pump. The restriction HP is the of import number. For case I will utilize 2 Pentair Whisperflo pumps, a full rated 1 HP and an uprated 1.v HP. First, these are EXACTLY THE SAME PUMP WITH THE Same MOTER, IMPELLER, VOLUTE, etc. and pump EXACTLY THE Same AMOUNT OF Water! The only divergence is the nameplate and the toll! In the 1 HP full rated pump in that location is a service gene of 1.65. Y'all multiply the service factor by the rated HP to become the brake HP, in this case it's 1.65. At present the upratred 1.five HP pump. This one has a service cistron of ane.one so you multiply this service factor by the rated HP of 1.v and you lot get a restriction HP of 1.65!
I picked on Pentair simply all major pump manufacurers play this game. Some pump model lines are only uprated, btw (Pentair Pinnicle for example). When buying a pump yous want to look at the restriction HP and the pump performance bend to encounter what size pump you demand. Too, check prices. Sometimes the equivalent uprated pump is less expensive than the total rated lower HP model in the same product line fifty-fifty though they are exactly the aforementioned pump.

High efficiency pumps use a unlike motor and save about 10% in electricity costs over a standard pump of the aforementioned model and HP. They also come in uprated and full rated models in many production lines.

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What Does Service Factor Mean On Pool Pumps,

Source: https://www.troublefreepool.com/threads/understanding-pump-service-factor.1263/

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