The power usage is consistent with the 1.5 HP model.Pentair IntelliFlo3 VSF Pump 3.0HP.
What is the pump P/N part number from the barcode sticker?
What HP is on the motor label?
The power usage is consistent with the 1.5 HP model.Pentair IntelliFlo3 VSF Pump 3.0HP.
The power usage is consistent with the 1.5 HP model.
What is the pump P/N part number from the barcode sticker?
What HP is on the motor label?
I also have been suspicious of a suction side air leak….the pump basket often has 3 inches of air in it… it goes away at higher speeds.it uses more electricity if I run it at the same speed on bypass. Not sure why the difference. It pulls ~2kw on bypass at max.
2.8 times more restrictive? Could the check valve be a factor? That is the only difference besides a slightly longer loop and a few elbows.The first is H = 0.03375F^2.
The second is H = 0.0075F^2
That puts the heat pump at about H = 0.02625F^2.
The heater should be about H = 0.00924F^2.
The heater is about H = 0.017F^2 over what the book indicates.
The heater is about 2.84 times more restrictive than the book indicates.
View attachment 559524
View attachment 559525
View attachment 559526
The pressure reading on my filter was ~30 psi at 45gpm with heater. So that checks.Your system curve with the heater is really bad at about y = 0.03669 X^2.
The heater is about H = 0.00924F^2.
So, the system without the heater would be about H = 0.02745F^2.
At 45 GPM without the heater, the system pressure would be about 24 psi.
With the heater, the system pressure will go to about 33 psi.
Curve A: H = 0.0167 x F2 (Curve 2.0)
Curve B: H = 0.050 x F2 (Curve 1.5)
Curve C: H = 0.0082 x F2 (Curve 2.5)
Where: H is the total system head in feet of water.
F is the flow rate in gallons per minute (gpm)
How to Read Pump & System Curves
If you find yourself somewhat mystified by pump curves and performance charts, or if you need to train someone about hydraulic efficiency, here’s a brief primer to get you started.www.aquamagazine.com
View attachment 559492
View attachment 559499
View attachment 559500
y=0.03669X^2, y from 0 to 75 - Wolfram|Alpha
Wolfram|Alpha brings expert-level knowledge and capabilities to the broadest possible range of people—spanning all professions and education levels.www.wolframalpha.com
View attachment 559501
Seems to be excessively restrictive.2.8 times more restrictive? Could the check valve be a factor? That is the only difference besides a slightly longer loop and a few elbows.
What is the filter pressure at 45 gpm with the bypass open?The pressure reading on my filter was ~30 psi at 45gpm with heater. So that checks.
The head loss should be less than 1 psi.Check valve is Hayward Check Valve PSCV2S2 2 - 2.5 Inch.
The heater is creating about an extra 15 psi and it should be about 10 psi with the check valve.The filter pressure is 15psi with bypass open at 45gpm.
Cell was cleaned last week, filter backwashed 3 weeks ago. Pump basket is clean. But those are all common to the bypass and the heater. Check valve on suction? No idea i didn’t install the pump. Pool has bubble jets and regular jets on the return the others that are off are slide and deck jets.Check the cell to see if it is clean.
What does each return valve go to?
Why is there a check valve on the suction?
Check the pump basket to make sure that it is clean.
When was the last time you backwashed the filter?
View attachment 559556
Three weeks is a long time for that size filter.filter backwashed 3 weeks ago