The popular belief is that pool filters need to be replaced once they stop performing to expectations. The point is pool filters are often costly especially when associated with fitting costs and accessories. Often a simple backwash can restore the performance back to you pool filter. So why not back wash the pool filter and breathe life back into it? This will save you a couple of hundred bucks for sure.
The following steps should guide you to backwash a sand pool filter with a side valve.
How to Backwash sand filter with slide valve:
1. If you have a backwash hose roll it out and shut down the motor.
2. Pull the plunger T-handle upwards 2-3 inches so that it is unlocked.
3. After opening the air bleeder assembly you then turn the pool pump on.
4. Check the pressure on the pressure gauge, to verify the hose has no kinks. This should be +40 PSI.
5. When water is running clear through the hose you can shut off motor.
6. Return the T-handle to the locked position by pushing down.
7. Turn the pump back on and roll up the backwash hose and you are finished.
Your filter should run for 4 weeks at least before you need to backwash it. There is a problem with the filter size or sand in the filter if you need to backwash in less time.