Had to replace the top cap to my tr100 sand filter due to a leaky pressure release valve. I ended up changing out about 50% of the sand in the process. After getting her all buttoned back up I'm having a problem with pressure. When I shut the return valve I get pressure, as soon as I open the return valve back up pressure drops and I get air bubbles. What can I do to troubleshoot this further?
TR100 Sand Filter - low pressure troubleshooting
- Thread starter Jfair9
- Start date
Slide valves are horrible.
I would just replace the slide valve with a multiport.
Pentair 2" Threaded Multiport Valve for Sand and Quad D.E - 261055
www.inyopools.com
I would just replace the slide valve with a multiport.
Pentair 2" Threaded Multiport Valve for Sand and Quad D.E - 261055
Pentair OEM Slide Valve Piston Rod Assembly for Pentair Filters - 273241 - INYOPools.com
273241 - PISTON ROD ASSEMBLY (273241)
www.inyopools.com
Pentair 2" Threaded Multiport Valve for Sand and Quad D.E - 261055 - INYOPools.com
261055 - 2" Threaded Multiport Valve for Sand and D.E
www.inyopools.com
Is the thought that it could be letting air in?
When I close the valve that's on this line, I get pressure and no air bubbles. I assume it's the return line.
When I close the valve that's on this line, I get pressure and no air bubbles. I assume it's the return line.
Last edited:
Is the suction valve set correctly?
Maybe at high flow the pump is sucking in air.
Have someone look into the skimmer to see if it is staying full or draining out when the pump is on.
Maybe the skimmer weir is stuck in the up position blocking water flow into the skimmer?
Maybe at high flow the pump is sucking in air.
Have someone look into the skimmer to see if it is staying full or draining out when the pump is on.
Maybe the skimmer weir is stuck in the up position blocking water flow into the skimmer?
In this picture, suction line 1 is closed and suction line 2 is open.
One line should be skimmer and the other should be main drain.
Is the skimmer line 1 or line 2?
One line should be skimmer and the other should be main drain.
Is the skimmer line 1 or line 2?
Checking now.
I did notice that the basket at the pump isn't getting full of water like it used to. There's water, just a air gap in the see through plastic larger than normal.
Maybe the water level in the pool is too low?
Do you normally leave the main drain closed?
Does the backwash seem to work correctly?
Do you normally leave the main drain closed?
Does the backwash seem to work correctly?
I usually have the skimmer going but in attempting to troubleshoot I shut the valve to the skimmer. The position of that valve hasn't made a difference to the pressure.
Water levels are fine, the skimmer isn't sucking air.
Backwash worked fine right before I opened her up. I ca try to backwash again.
Would overfilling the sand cause this issue? Seems like somethings off on the suction side causing air to get in. Maybe main drain blockage?
Water levels are fine, the skimmer isn't sucking air.
Backwash worked fine right before I opened her up. I ca try to backwash again.
Would overfilling the sand cause this issue? Seems like somethings off on the suction side causing air to get in. Maybe main drain blockage?
Maybe a problem on the suction side or the return.
Does it seem like the pump is getting a bunch or air?
What position was the suction valve in before the work?
Was everything working before you did the work?
Maybe take the slide valve apart to check it.
Does it seem like the pump is getting a bunch or air?
What position was the suction valve in before the work?
Was everything working before you did the work?
Maybe take the slide valve apart to check it.
Good call on focusing on the pump and basket area. Had a bunch of debris outside of the basket that got lodged into the inlet side of the pump. Cleared it all our, fired her up, and back in business. Thx
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