Correct backwashing a sand filter is essential to prevent debris from returning to the pool. Have you ever wondered what the rinse option was for on your multi-port valve? Here Lynda explains all.
Your filter should be backwashed when the pressure gauge is approximately 50 kPa above the baseline pressure reading or if it is in the ‘red zone’ on the pressure gauge. Do not get in the habit of backwashing at a set interval regardless of whether the filter needs it or not. The debris in the filter actually aids the filtration process and should only be backwashed as needed.
A common mistake is not rinsing the filter after backwashing the filter. The rinse cycle helps settle the sand back down and prevents sand from ‘blowing back’ into the pool when you resume normal filtration.
We have also created a Step-by-Step Free Guide – download here.
As always, if you have any questions at all, please get in touch. We have highly trained pool service technicians who can help you.