Genuine Maytronics part · Filters
Fine Debris Filter Panels (4 Pack)
Part number 9991407-R4 · UPC 810071221224 · 1 year part warranty
Genuine Maytronics fine debris filter panels for Dolphin W20, supplied as a four-panel replacement pack.
$84.99 MSRP
Not stocked by Poolbots. Sold on Amazon as a genuine Maytronics part.
Ships from Amazon.com. As an Amazon Associate, Poolbots earns from qualifying purchases.
About this part
What it does and when to replace it.
These genuine Maytronics filter panels capture fine debris as pool water passes through the robot's filter.
The compatibility listing confirms Dolphin W20 for part 9991407-R4. The pack includes four panels to replace the robot's fine debris filter panels. Poolbots does not currently stock this part. Contact Poolbots' pool experts by live chat or phone for help identifying it and checking fit.
- Check each panel for tears, cracks or warping when you clean the filter.
- Use part number 9991407-R4 when asking Poolbots' pool experts for identification help.
- Other model names appear on the spec sheet, but Dolphin W20 is the only confirmed fit provided. Ask for a fit check before choosing another model.
Compatibility
Fits these Dolphin robots.
Confirmed by Maytronics' compatibility checker and each robot's own spare-parts list.
Also listed by Maytronics for: Dolphin W20, POOL IN, POOL UP, Dolphin POOL UP, Dolphin Swift, Dolphin X FORCE 10, Dolphin Cosmos 30, Dolphin DX5, W20.
Do it yourself
How to replace it at home.
Switch off and unplug the power supply.
Remove the robot from the pool. Follow the Dolphin W20 owner's manual to access the filter panels.
Remove the old panels, noting their position and orientation.
Install the replacement panels in the same positions and check that they sit securely.
Close the filter access as directed in the owner's manual before reconnecting power.
Maytronics' video for this part
Step-by-step answers for this kind of part
How do I replace the filter panels on my Dolphin robot?Video15 min
Find your model below, then follow its video and instructions. The panel removal and installation steps vary by filter design.
S50 (Cayman, T15, T25, Active 10, Escape, Encore, E20, E25) & S100 (Advantage, Proteus DX3, Saturn, Echo, Nautilus CC, Active 15, Escape, Liberty 200/300/400)
Step 1Remove the old filter panels
- Lift the filter cover open.
- Take the filter basket out of the robot.
- Press the plastic release at the top of the filter's wide side, then lift out the released panel. The narrow side panels come out easily. The front and back panels are secured with screws, so use a Phillips-head screwdriver to release them.
- Follow the same process for the opposite side panel.
Step 2Install the replacement panels
- Slide a replacement panel into the basket.
- Push the panel against the frame until it clicks into place.
- Fit the other side panel the same way.
- With both panels in position, clip the filter's bottom section back into place.
S200 (E30, Advantage Ultra, Active 20, Quantum, T30, Proteus DX4, Triton PS) / S300 (E35/E35i, Proteus DX5i, Active 30, T35/T45, Premium 40, Explorer E30, E40i, Active 30i, T55i) / S400 (E50i, Active 50, Explorer E50) / Liberty 600
Step 1Remove the old filter panels
- Lift the filter cover open.
- Take the filter basket out of the robot.
- Press the plastic release at the top of the filter's side, then lift out the panel that releases.
- Work through the remaining narrow and wide panels using the same method.
Step 2Install the replacement panels
- Set the bottom edge of a replacement panel into the filter's lower rail.
- Push the panel into the frame so it clips into the filter.
- Press it against the frame until you hear it click.
- Fit each remaining narrow and wide panel the same way.
Premier/Dx4 (Bag filter)
Filter bag setup for Dolphin Premier
- Turn the robot upside down so you can reach the filter area.
- Release the clips underneath the filter assembly.
- Lift the assembly out of the robot.
- If the white filter screen is not already fitted, secure it with the two screws.
- Check that the filter bag sits securely on the assembly's guard rails.
- Put the filter bag assembly back in, following the guide and video.
Filter cartridge assembly setup for Dolphin Premier
- Turn the robot upside down so you can reach the filter area.
- Release the clips underneath the filter assembly.
- Lift the assembly out of the robot.
- Make sure the white filter screen is not installed for this setup.
- Follow the guide and video to reinstall the assembly.
- Fasten the clips underneath the assembly to secure it.
M250 (Dx3, Nautilus CC Plus)
Step 1Prepare the filter cartridges
- Lift the filter covers and take the cartridges out of the robot.
- Release the clips at the top of each cartridge.
- Inspect the non-return flap for debris.
- Check that the frame is clean before fitting replacement panels.
Step 2Fit the replacement panels
- Seat the locating tabs along the bottom of each panel in the matching grooves on the base frame.
M400/M500 (Sigma, Nautilus CC Supreme, Aquarius XL, Oasis)
Step 1Prepare the filter cartridges
- Lift the filter covers and take the cartridges out of the robot.
- Release the clips at the top of each cartridge.
- Inspect the non-return flap for debris.
- Check that the frame is clean before fitting replacement panels.
Step 2Fit the replacement panels
- Seat the locating tabs along the bottom of each panel in the matching grooves on the base frame.
M600/M700 (Active 60, E60i, Premium 60, Explorer E70)
Step 1Remove the old filter panels
- Lift the filter cover open.
- Take the filter basket out of the robot.
- Press the plastic release at the top of the filter's side, then lift out the panel that releases.
- Work through the remaining narrow and wide panels using the same method.
Step 2Install the replacement panels
- Set the bottom edge of a replacement panel into the filter's lower rail.
- Push the panel into the frame so it clips into the filter.
- Press it against the frame until you hear it click.
- Fit each remaining narrow and wide panel the same way.
Replacement panels and filter care
You can purchase replacement filter panels from Poolbots. Before ordering, confirm that the panel part number matches your robot. For help choosing the correct panels, contact Poolbots' pool experts by live chat or phone.
Additional references:
Specifications
Size & Dimension
- Package Dimensions
- 17.0x2.4x9.9 inch
- Gross Weight
- 0.507 lb
General Info
- Warranty (years)
- 1
- UPC
- 810071221224
Questions
Fine Debris Filter Panels (4 Pack), answered.
Will these panels fit my Dolphin W20?
Yes. Dolphin W20 is the confirmed compatible model for part 9991407-R4. For any other model, ask Poolbots' pool experts by live chat or phone to check fit.
How many filter panels are included?
The pack contains four replacement fine debris filter panels.
What warranty is listed for this part?
The listed warranty for part 9991407-R4 is one year.
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