PSI at 15 when pump off?

[danandmanda]

Just had the pool opened yesterday, and for the first time in 3 seasons of ownership a pressure gauge is reading above 0 when the pump is off. After backwashing twice, the PSI was running at nearly 40 with the pump running (usually ran clean at 20 in the past) and it currently reads 15 PSI when the system is off. Is this more likely indicative of a faulty pressure gauge reading or something else? Thanks in advance...

 

[homegameroom]

It's probably a bad pressure gauge. Give it a little flick with your finger when it is off - it will probably return to zero.

 

[setsailsoon]

Sometimes this is caused by a bit of debris in the gauge. I find it's a good indicator that it's time to start looking for a replacement. There's a pretty wide range of price. Online is usually better. Glycerine filled seem to last a lot longer, naturally they're more expensive

 

[Texas Splash]

There are very good gauges here: Flow Meters and PSI Gauges .

 

[Teald024]

Yes, +1 for the gauges at TFTESTKITS.com. I bought, installed one and it worked great.

 

[homegameroom]

This thread reminded me that my pressure gauge is bad, so I just ordered the glycerin-filled one. There are not many other options out there (besides that one) that have a usable pressure range. We don't (shouldn't!) need a gauge that goes to 60 PSI..

 

[danandmanda]

Is replacing the gauge as simple as turning off the power and unscrewing the old and inserting the new? I can't seem to find any pressure relief valve/switch on my sand filter.

 

[Texas Splash]

Is replacing the gauge as simple as turning off the power and unscrewing the old and inserting the new?

Basically - yes. Plus perhaps adding 2-3 wraps of teflon tape around the threads. Some sand filtes don't have an external relief valve.

 

[Teald024]

And remember that tight is tight, too tight is broke.

 

[danandmanda]

Thanks for the insight. I put my big boy pants on and swapped out the broken gauge for a new one. PSI readings are all normal again.