Whisper Flo No pressure

[bfr57]

Have a 20yo Pentair whisperflo that has almost zero pressure. Changed strainer oring. No difference switching valves. Impeller looks good. Poored water on valves and connections. All no change. Any ideas?

 

[ajw22]

What type of filter do you have? When did you last clean your filter?

You sure you checked the impeller for clogs. See this thread…

Low pressure in pump filter

Hot tub is connected to the pool. Last few days, after using the hot tub, I noticed the waterfall from the hot tub to the pool that runs when pump is on high speed has looked weak. Cleaned baskets, cleaned filters, water level is good. Maybe a clog in a pipe from the skimmers to the pump? Also...

www.troublefreepool.com

 

[bfr57]

Yes, checked impeller for clogs. Cartridge filters. Filters just cleaned, but that always presents a high pressure condition when they’re dirty. Opening valve on top of filter housing is just a dribble of water.

 

[ajw22]

Remove the filter cartridge and run the system and see if there is any difference.

How did you check the impeller?

 

[bfr57]

Removed the motor/pump from housing and ran a thin screwdriver through all vanes of impeller

 

[bfr57]

I should have full pressure on top of filter housing since it’s before the filters right?

 

[ajw22]

Post pics of your equipment pad.

 

[bfr57]

 

[Jimrahbe]

57,

Do you have actual low flow, or is the problem just the pressure you see on the gauge???

Sounds to me like your filter is plugged at the top where the water enters the gauge and air vent valve

You can sometimes fix that problem.. With the pump off, and the air vent open, force water from a garden hose back through the vent valve and into the filter..

Thanks,

Jim R.

 

[bfr57]

Took this off and full pressure, actually too high now at 30psi. What does it do? Was a little dirty but have seen it worse over the years.

 

[Jimrahbe]

57,

Just to be clear, the filter pressure gauge measures how hard it is to push water through your filter..

High filter pressure does not mean your pump is putting out too much, it means your filter, or some part of the water's path back to the pool, is too restricted.. In a filters case, the lower the pressure, the better.. My filter pressure is about 1 lb. on a 30 lb. gauge, but then I have a VS pump running at a low RPM.

Thanks,

Jim R.

 

[bfr57]

Yup, exactly. Time for new filters. But what is the screen in between the filters? That’s what affected the system from no pressure to high. Nothing else was messed with

 

[Jimrahbe]

57,

I think it is a way to bleed air from the bottom of the tank, but don't know that for a fact..

Let's ask a guy who knows 'everything'... Calling @JamesW

Thanks,

Jim R.

 

[JamesW]

The screen is an air bleeder.

It makes zero difference in pressure.

 

[JamesW]

Maybe a bad gauge?

 

[JamesW]

Check the air relief to make sure that it is clean.

 

[JamesW]

 

[bfr57]

The air relief has no external leaks. This is only for manual operation correct? Nothing to do with normal ops? Gauge is good. Still puzzled that the only thing I did is remove that screen and pressure changes?