Not impressed

Jump to latest Follow Reply
restoman

restoman

Well-known member
Dec 24, 2010
211
Murrieta, CA
For those that have been following my prior thread regarding my DEAD WFE-6 MOTOR, I purchased and installed a new EVQ165 motor but to be honest, so far I'm not impressed with its performance.

It works, but it's just not pushing the same amount of water the old single speed WFE-6 pump did. For example, the pressure on the filter housing shows just over 7PSI where the old WFE-6 used to show 15PSI. The water coming over the spa "spillway" is hardly any and the vacuum moves, but it's VERY slow and can't get up the sides like it used to.

The new pump is running at 3450RPM, the same as the WFE-6, so I'm not sure why it's not pushing the same amount of water unless:

1. I screwed something up when I installed the new Pentair 356198 gasket and shaft seal kit
2. I'm using the wrong impeller
3. The motor isn't very good

I don't believe I screwed up the gasket kit, so maybe it's the wrong impeller? I just used all the same stuff that was on the WFE-6 and transferred it over to the EVQ165. Was that wrong?

Ed
 
Last edited:
The WFE-6 uses the 073129 impeller, which requires 2.20 hp.

Assuming the same impeller and the same RPM, the performance should be the same.

Check the amps and volts to see how much power is being used.

This chart shows you what impeller each pump model number takes.

The below chart shows the total hp that each impeller takes.

Impeller......Total HP.

073126.........0.95
073127.........1.25
073128.........1.65
073129.........2.20
073130.........2.60
073131.........3.45

1717093395090.png
 
Yep, that's the impeller I PURCHASED so I'm at a loss here. I have a volt meter and the volts show 244 so that's correct. I don't have an amp meter so I can't check that, but I'm assuming it's correct since the volts are correct.

The WFE-6 (actually, the century pump itself, P/N 177451-03 that died was 1.5HP (see attached), so has that been an issue all along??? I was basing my new purchased on the 1.5HP rating

Ed
 

Attachments

  • Main pool pump Whisperflo Model WFE-6.jpg
    Main pool pump Whisperflo Model WFE-6.jpg
    45.5 KB · Views: 4
  • Century 177451-03 Motor.jpg
    Century 177451-03 Motor.jpg
    168.6 KB · Views: 4
restoman said:
The EVQ165 has a service factor of 1 so does this mean I bought the wrong pump?
Click to expand...
Yes.

Model EVQ225 would have been correct.

Maybe the motor control is limiting the power based on the amps.

Is the voltage 120 or 240?

Century (A.O. Smith) V-Green EVO 2.25 HP Up Rate VS Motor, Square Flange 48Y Frame, Variable Speed - Model EVQ225 - INYOPools.com

V-Green EVO 2.2 HP Square Flange 48Y Variable Speed Motor - EVQ225
www.inyopools.com www.inyopools.com

www.inyopools.com

Century VGreen Evo Variable Speed Motors: The New Standard

For homeowners looking to cut pool operating costs, your pool pump motor is the best place to start. By upgrading to a variable speed pool pump, you'll gain efficiency, durability, versatility, and monetarily. What is the VGreen EVO? The Century VGreen EVO variable speed motor is the...
www.inyopools.com www.inyopools.com
 
  • Like
Reactions: Darin
So let me understand this...

3450RPM is 3450RPM. It doesn't matter what pump it is, if it's 3450RPM it'll move X amount of water. So why doesn't my current EVQ165, running at 3450RPM move the same amount of water? I just don't understand.

UNLESS... it's not really running at 3450RPM because the 1.6HP can't handle the "weight" (not sure if that's the right word to use, but I think you get it) of the water where the 2.25HP pump CAN?

Ed
 
restoman said:
UNLESS... it's not really running at 3450RPM because the 1.6HP can't handle the "weight" (not sure if that's the right word to use, but I think you get it) of the water where the 2.25HP pump CAN?
Click to expand...
It might be limiting the speed to prevent excessive amperage.

Contact the manufacturer to see what they can tell you.

restoman said:
3450RPM is 3450RPM. It doesn't matter what pump it is, if it's 3450RPM it'll move X amount of water.
Click to expand...
Correct, if it is going the same speed, it should move the same amount of water.
 

Enjoying this content?

Support TFP with a donation.

Give Support
Well, either way I just bought the EVQ225 so hopefully in another few days it'll be back to where it was, 15PSI with water falling over the spillway and the vacuum moving at the right speed!
By the way, I called Century (now called Regal Rexnord), but they no longer offer phone support. You have to email them at [email protected] and hope for a reply. If they do I'll post their answer here.

Thanks for the help guys. I appreciate it.

Ed
 
Last edited:
Ever get in a boat with too much pitch on the prop? It just lugs along not achieving full rpm. How about too little. When you hit it the engine just spins out at really high rpm.

Your motor is undersized for the impeller, therefore it can't get to 3450 rpm full speed.

If you think about the boat motor and tie it together the sound the boat motor makes, it will make a bit more sense to you. Thus you need at least a 2.2THP or greater motor for the impeller in your pump.
 
Last edited:
the motor will achieve 3450 rpm and the impeller will move what is rated for. In other words it won't move as much as the larger impeller because, well its smaller. It will move as much as it was designed to at 3450.
 
  • Like
Reactions: JamesW

Enjoying this content?

Support TFP with a donation.

Give Support
You must log in or register to reply here.
Thread Status
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Top Bottom
Back
Jump to latest Follow Reply