how do i backwash my hayward pool filter


Author: Poolking - Swimming Pool Equipment Manufacturer

How Do I Backwash My Hayward Pool Filter?

If you own a pool, it's essential to keep the water clean and clear for a healthy swimming experience. One of the most important parts of pool maintenance is the filtration system. Your Hayward pool filter requires regular backwashing to ensure that it's functioning correctly. Backwashing is the process of reversing the flow of water through the filter to eliminate debris and contaminants from the sand or cartridge. In this article, we'll guide you through the steps of backwashing your Hayward pool filter.

Why Backwash Your Hayward Pool Filter?

Over time, the Hayward pool filter will accumulate dirt, debris, and other particles that get trapped in the sand or cartridge. Backwashing removes all the trapped debris in the filter, preventing it from clogging and lowering the efficiency of your filtration system. Backwashing your Hayward pool filter is an essential step in maintaining the swimming pool's cleanliness and hygiene.

When to Backwash Your Hayward Pool Filter?

It is best to backwash your Hayward pool filter when the water pressure reaches 8 to 10 psi above its normal level. The normal pressure setting can be different for each pool, so you need to know your pool's recommended pressure value to determine when backwashing is required. Another sign to backwash your filter is when you notice cloudy water or reduced water flow in the pool.

Steps to Backwash Your Hayward Pool Filter

Step 1: Turn off the pump

Before starting the backwashing process, turn off the pool pump to prevent any damage to the system.

Step 2: Prepare for Backwash

Locate the backwash valve on your Hayward pool filter, usually labeled backwash, and turn it to the backwashing position. If your filter has a multiport valve, turn it to the backwash setting.

Step 3: Release the Locking Clamp

Remove the locking clamp and open the filter's lid to access the sand or the cartridge.

Step 4: Remove the Dirt

Remove any loose debris or dirt from the filter with a hose.

Step 5: Backwash the Filter

Turn on the pump and let water flow through the backwash valve. Keep an eye on the sight glass, which is a transparent cylinder on the filter, and wait until the water runs clear. The process of backwashing can take up to a few minutes.

Step 6: Rinse the Filter

Once the water runs clear, shut off the pump and switch the backwash valve to the rinse setting. Turn the pump back on and let it rinse the filter for a few seconds until the water runs clear again.

Step 7: Reset the Filter

Turn off the pump again and put the filter lid back on. Replace the locking clamp and turn the pump back on.


Backwashing your Hayward pool filter is an easy process, and it's essential to keep your pool clean and healthy. Remember to check your pool's recommended pressure value and backwash your filter when it's required. Follow our simple guide, and you'll be able to backwash your Hayward pool filter in no time, ensuring you have sparkling clear water for a refreshing swim.


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