HEPA Filter

This guide covers replacing the HEPA filter on the 22 IDEX V4. The HEPA filter is located inside the enclosure on the right side (when facing the front of the printer) and removes particles and fumes from the chamber air during printing. Replace the filter when airflow drops noticeably or the filter media looks visibly clogged or discolored.

Safety and Warnings

Warning: WARNING: If the printer was recently in use, internal surfaces and the chamber heater (located on the opposite side) may still be hot. Let everything cool to room temperature before reaching inside the enclosure.

Tools and Materials

• 2 mm Hex screwdriver (hex wrench)
• 2.5 mm Hex screwdriver (hex wrench)
• Replacement HEPA filter
• Threadlocker (we recommend Loctite 243)

Preparation

1. Raise the print bed as high as possible to create working space inside the enclosure. You can do this from the DWC interface or by using the jog controls before powering off.

2. Turn off the printer and unplug it from the power outlet.

3. Wait at least 60 seconds for the capacitors to discharge.

Removing the Stainless Steel Housing

4. Look inside the enclosure. On the left and right sides you will see two rectangular protrusions. The left one is the chamber heater with the chamber fan. The right one is the HEPA filter assembly � that is what we are working with.

5. Locate the four M3�6 screws holding the stainless steel HEPA filter housing. Remove all four screws using a 2 mm hex screwdriver.

6. Remove the stainless steel housing and set it aside.

Removing the HEPA Filter Bracket

7. With the housing off, you can see the HEPA filter holder. This bracket holds the HEPA filter and the HEPA Filter Fan - Rev 2 behind it. It attaches with hook-shaped tabs on the back side (closer to the rear wall) and two M3�6 socket head cap screws on the front side.

8. Unscrew the two M3�6 socket head cap screws on the front side of the bracket using a 2.5 mm hex screwdriver.

9. Lift the bracket slightly to unhook the tabs from the rear mounting points, then pull the entire bracket out together with the HEPA filter.

Replacing the HEPA Filter

10. Remove the old HEPA filter from the bracket.

11. Behind the filter there is a gasket. Remove it carefully and set it aside � you will reuse it with the new filter.

Warning: IMPORTANT: Do not discard the gasket. It seals the filter against the bracket and prevents unfiltered air from bypassing the filter.

12. Note the orientation of the old filter before discarding it. The HEPA filter has two distinct sides:

    • White pleated fabric � the intake side (faces the chamber).
    • Carbon honeycomb with a thin mesh � the outlet side (faces the fan).

13. Place the gasket onto the new filter on the carbon honeycomb (outlet) side.

14. Insert the new filter into the bracket in the same orientation as the old one � white pleated side facing outward (toward the chamber), carbon honeycomb side with the gasket facing the fan.

Reassembly

15. Position the bracket back inside the enclosure. Hook the tabs on the back side onto the rear mounting points first, then pivot the front side into place.

16. Apply a small amount of threadlocker (Loctite 243) to the threads of the two M3�6 socket head cap screws. Install and tighten them with the 2.5 mm hex screwdriver.

17. Place the stainless steel housing back over the bracket.

18. Apply a small amount of threadlocker (Loctite 243) to the threads of the four M3�6 housing screws. Install and tighten all four with the 2 mm hex screwdriver.

19. Clean the work area and remove any debris from inside the enclosure before powering the printer back on.

Support

Vision Miner Support

• Email: support@visionminer.com
• Phone: +1 (949) 522-4422