Zero pressure in my cartridge filter

jvec

New member
Jul 23, 2021
4
Fresno, CA
Nearly zero psi. Return flow looks normal. I just replaced pressure gauge and washed the cartridge filters today but didn’t solve the issue. My pump basket is clean. What else should I check? Please
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
43,976
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Welcome to the forum!
I assume it is not normal after cleaning the filters to have low pressure?
The filters may not be properly installed and allowing water to bypass going through them. Filling out your signature with your pool type, size, equipment, etc helps us help you.
I suggest you read ABC's of Pool Water Chemistry.
 

Texas Splash

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2014
33,381
Texas, San Antonio/Marion, South-Central Area
Pool Size
17888
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
CircuPool RJ-45 Plus
My pressure gauge sits near zero all the time when on low speed. On high is goes only to about 6-7 and finally about 10 or so when I need to clean it.

Welcome! :wave:

 

Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
22,800
Bedford, TX
J,

Tell us what pump you have and how big your filter is..

If you have good flow back to the pool, what are you worried about?

Thanks,

Jim R.
 

jvec

New member
Jul 23, 2021
4
Fresno, CA
Welcome to the forum!
I assume it is not normal after cleaning the filters to have low pressure?
The filters may not be properly installed and allowing water to bypass going through them. Filling out your signature with your pool type, size, equipment, etc helps us help you.
I suggest you read ABC's of Pool Water Chemistry.
Hi, Thanks for your respond. That was my first thread. I didn’t know how to reply back. Anyway, that filter and pump were installed over 3 years ago. The whole time was fine until 2-3 weeks ago. It happened suddenly. When I looked at the pressure 2-3 weeks ago and found zero psi. I thought faulty pressure gauge so I bought a new one and replaced it. I also washed the filters same time. I cleaned the pump basket. But still zero psi after all done. Thank you for your help!
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Jimrahbe

Mod Squad
TFP Expert
LifeTime Supporter
Jul 7, 2014
22,800
Bedford, TX
J,

If the flow back to the pool feels normal, then it has to be a gauge issue. Since the gauge itself is new, then I suspect that the small hole that goes between the gauge and the inside of the filter is clogged. Take the gauge out and run water through the line under the gauge forcing it back into the filter.

With a single speed pump, your gauge should never read zero when the pump is on.

Thanks,

Jim R.
 

jvec

New member
Jul 23, 2021
4
Fresno, CA
J,

If the flow back to the pool feels normal, then it has to be a gauge issue. Since the gauge itself is new, then I suspect that the small hole that goes between the gauge and the inside of the filter is clogged. Take the gauge out and run water through the line under the gauge forcing it back into the filter.

With a single speed pump, your gauge should never read zero when the pump is on.

Thanks,

Jim R.
Jim,
Pressure gauge and air bleeder are one piece. I replaced the whole set new including small hole.
 

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