The easiest way to drain a pool with a diatomaceous earth (DE) filter is usually by using the filter system itself to pump the water out via the waste port. Here's how:
Steps to Drain Your Pool with a DE Filter:
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Turn off the Pool Pump: Safety first! Always turn off the pump before manipulating any valves.
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Locate the Multiport Valve: This valve is usually located on the side of your DE filter. It controls the flow of water. If you have a push-pull valve (also known as a slide valve), the process will be slightly different (see alternative method below).
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Set the Multiport Valve to "Waste": Rotate the handle on the multiport valve to the "Waste" setting. This will bypass the filter and send the water directly out the backwash hose. Important: Make sure you know where the water will drain to and that it's a safe and appropriate location. Avoid draining into areas that could cause flooding or violate local regulations.
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Attach the Backwash Hose: Connect your backwash hose to the backwash port on the filter. Ensure the hose is securely attached to prevent leaks.
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Position the Backwash Hose: Run the backwash hose to the designated drainage area.
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Turn on the Pool Pump: Turn the pump back on. The water will now be pumped out of the pool, bypassing the DE filter, and exiting through the backwash hose.
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Monitor the Water Level: Keep an eye on the water level to prevent the pump from running dry, which can damage it. Turn off the pump when you've reached the desired water level.
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Turn off the Pool Pump and Reset the Valve: Once the water level is at the desired point, turn off the pump and return the multiport valve to the "Filter" position. Disconnect the backwash hose and store it.
Alternative Method for Pools with a Slide Valve (Push-Pull Valve):
If your DE filter has a push-pull valve (slide valve) instead of a multiport valve, follow these steps:
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Turn off the Pool Pump: Always turn off the pump before manipulating any valves.
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Backwash the Filter: Engage the backwash function on your slide valve. This usually involves pulling the handle up (or pushing it down, depending on the valve's orientation). Refer to your filter's manual for the correct operation.
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Turn on the Pool Pump: Turn the pump back on. The water will now be pumped out of the pool through the backwash hose.
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Monitor the Water Level and Pump: Similar to the multiport valve method, monitor the water level closely to avoid the pump running dry. Turn off the pump when you've reached the desired water level. You may need to occasionally backwash the filter to maintain the water flow.
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Turn off the Pool Pump and Reset the Valve: Turn off the pump, push the handle back into its original position (or pull it up, depending on the valve's orientation), and disconnect and store the backwash hose.
Important Considerations:
- Water Chemistry: Consider the chemical balance of the water you're draining, especially if you're discharging it into a municipal storm drain. Highly chlorinated water can be harmful to the environment.
- Local Regulations: Check your local regulations regarding pool draining. Some areas have restrictions on where you can discharge pool water.
- Pump Safety: Never let the pump run dry. This can cause severe damage.
- DE Disposal: Be aware of where the DE waste will go as the water is drained.
By using the waste or backwash function on your DE filter, you can efficiently and relatively quickly drain your pool to the desired level. Remember to prioritize safety and be mindful of environmental considerations.
