So I backwashed for the first time this season and noticed the pressure isn't going down. When the pool was first put in, the pressure was 12 psi in 2008. I would wait until the pressure would build up to about 16, then backwash (and rinse). and it would go down to around 13. This year, the pressure started out around 18 psi, and when I backwashed (and rinsed), the pressure stayed the same. The instruction manual says that if you backwash and the pressure doesn't go down 4-6 psi, then you should replace sand. It also says that you should backwash when the pressure gets up to 10 psi more than the starting pressure, which it hasn't yet. What should I do?
Sand filter question
- Thread starter hyperchord24
- Start date
Does your pressure gauge go to zero when you stop the pump?
Those gauges are cheap and prone to failure. I'd just replace it first just to be sure you're really seeing those pressures.
Those gauges are cheap and prone to failure. I'd just replace it first just to be sure you're really seeing those pressures.
The gauge goes to zero when I turn the filter off. Does that mean the gauge isn't broken?
It's a good indicator that the gauge is ok but it could be bad.
How did the water look coming out of the waste line when you backwashed?
How long did it take the backwash to clear up?
Have you replaced the eyeball?
Is there a valve partially closed in the return line?
How did the water look coming out of the waste line when you backwashed?
How long did it take the backwash to clear up?
Have you replaced the eyeball?
Is there a valve partially closed in the return line?
Questions answered in order:Bama Rambler said:
I never looked at the water that comes out.
Don't know
what's an eyeball?
No.
Are all gauges for sand filters universal, or should I get the gauge that pentair sells?
As far as I know all filter gauges sold at pool stores are universal. I just replaced mine. Got the new one at the pool store - cost $6.15