Gauge pressure too high

Gouge

Well-known member
Jul 6, 2019
45
Jonesborough, TN
Pool Size
22000
Surface
Vinyl
Chlorine
Liquid Chlorine
I have a 22,000 gallon pool. Starting up this year. Filled and everything hooked up. When turning on pump pressure went to 40. Then turned off. Now it won’t go down below 40psi. And when I turn it on it goes to 60 psi. Help.
 
Your filter is clogged. Backwash it thoroughly.

Your filter is probably clogged because you have algae and your chemistry is off.

Can you post test results?

What does your water look like?

Your gauge is also bad if it went to 60. Order the gauge from TFTestkits.net.......it is noticeably superior.
 
New gauge installed. Now it won’t hold pressure. Help please.
My goodness. You're having a rough start this season. :hammer: So let's recap a few things:
- You replaced the filter gauge, but you're saying it won't show or hold a pressure?
- Are you sure (positive) you connected the hoses to your sand filter valve correctly? It's not uncommon to get the in & out lines attached backwards. Double-check that first.
- If you've made it this far with no improvement, check to ensure all valves are open as they should be.
- Is water moving through the pump basket okay? Pump basket full of water?

Let's stop there until we hear back from you.
 
My goodness. You're having a rough start this season. :hammer: So let's recap a few things:
- You replaced the filter gauge, but you're saying it won't show or hold a pressure?
- Are you sure (positive) you connected the hoses to your sand filter valve correctly? It's not uncommon to get the in & out lines attached backwards. Double-check that first.
- If you've made it this far with no improvement, check to ensure all valves are open as they should be.
- Is water moving through the pump basket okay? Pump basket full of water?

Let's stop there until we hear back from you.
Here are a couple pictures. Hose comes from the skimmer to the front of the pump. Hose from top of pump to top of filter and from lower top of filter to return. No valves
 

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All water moves freely as it should. Water in pump basket won’t stay filled. It goes down once I turn the pump on.
With your AGP set-up, that is key. Not too many areas to investigate. Normally when we hear the pump won't stay filled, we think of a few things like:
- Suction side air leak (from skimmer to pump); good connections on each end of the hose.
- Water level too low
- Skimmer weir door stuck; not operating freely restricting flow.

But water restrictions (i.e. a dirty filter) can also cause similar symptoms in the pump basket. Have you backwashed lately? If not, you may need to do so. Also, it would be good for us to see a full set of test results as Dave noted above. We learn a lot from those tests.

Going back to the gauge though. At first ti was going way too high, now not registering high enough? Did you get a gauge from the local pool store? Do the numbers show the same range (increments)? Is your pump a single speed to 2-speed? On low mine barely shows anything, but on high it goes up.
 
With your AGP set-up, that is key. Not too many areas to investigate. Normally when we hear the pump won't stay filled, we think of a few things like:
- Suction side air leak (from skimmer to pump); good connections on each end of the hose.
- Water level too low
- Skimmer weir door stuck; not operating freely restricting flow.

But water restrictions (i.e. a dirty filter) can also cause similar symptoms in the pump basket. Have you backwashed lately? If not, you may need to do so. Also, it would be good for us to see a full set of test results as Dave noted above. We learn a lot from those tests.

Going back to the gauge though. At first ti was going way too high, now not registering high enough? Did you get a gauge from the local pool store? Do the numbers show the same range (increments)? Is your pump a single speed to 2-speed? On low mine barely shows anything, but on high it goes up.
Gauge came from Lowe’s. Pool store closed until tomorrow it will go up. When pump is full then when pump empties it goes back down.
 
it will go up. When pump is full then when pump empties it goes back down.
So you have what appears to be some surging going on. I would exhaust all of those thing above. Water level, weir door, clean filter, everything you can check to ensure water is able to flow unrestricted. Since the pump is below the waterline, feeding the pump with water should not be an issue. So the filter may be the next culprit.
 
Gouge, if after checking all of that, things don't improve, I have some final options:
- Place the multiport valve (MPV) to recirculate so that you bypass the filter. Does the water flow seem to be better?
- Pay close attention to each setting in the MPV to ensure each position operates as it should to see if perhaps the spider gasket got pinched or something. Unlikely, but we're running low on options for your set-up.
- With power OFF, reach into the pump and try to feel the impeller. Ensure it spins freely and does not appear to have anything tangled around it.

Don't forget the water test results too. :)
 
So you have what appears to be some surging going on. I would exhaust all of those thing above. Water level, weir door, clean filter, everything you can check to ensure water is able to flow unrestricted. Since the pump is below the waterline, feeding the pump with water should not be an issue. So the filter may be the next culprit.
Not enough pressure to backwash
 
You've mentioned the pressure a few times, but I would like to confirm .... with the MPV on recirculate, does water flow at all? Water should flow easily from the skimmer that is higher than the pump (gravity-fed).

Did you close the pool last winter? Any chance something is stuck in the bottom of the skimmer or suction line?

If the skimmer or suction line are not plugged, and the water level in the pool is high enough, the pump should have plenty of water (full basket). On recirculate there is no filter to worry about, so the pressure gauge would be low at that point. But we need to ensure water is flowing well from skimmer > to pump > back to pool return jets.
 

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