Printers
...
M3/M3 Max Printer
Maintenance

Every 18 Months

6min

Perform these maintenance actions every 18 months:



As of printer software v1.40, the 18 month oxygen subsystem maintenance is longer required.

If you are running v1.39 or earlier, as in the case of Version Lock customers, the 18 month maintenance is required.

Put on CLEAN GLOVES before proceeding.



Oxygen Concentrator Filter

The oxygen concentrator filter removes nitrogen and captures oxygen from the air for printer operation.

1

Locate the Oxygen Concentrator Filter

The filter is located on the left-hand printer frame, near the bottom of the printer cavity.

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2

Remove Screws

Remove the two screws securing the filter with a 2.5 mm allen wrench.

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3

Remove Filter

  • Use the 2.5 mm allen wrench as a lever to pull the filter out of its opening
  • Dispose of the old filter as standard waste
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4

Prepare Replacement

Remove and discard caps from the o-ring fittings on a new filter

  • The filter assembly is pressurized, so you will hear a little pop and hiss when you remove the caps
    • If debris does get on the fittings, clean with an IPA-damped blue shop towel
  • Take care to avoid getting dust and debris on the o-rings and fittings

Proceed to the next step immediately.

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5

Insert New Filter

Insert the new filter into the printer where the old one was removed.

  • You may need to press firmly to get the fittings fully engaged.
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6

Re-Insert Screws

Screw in the new filter, 1/4 turn past finger tight.

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Particulate Filters

The particulate filters ensure the oxygen sub-systems are clean.

1

Locate the Particulate Filters

The filters are located on the left-hand printer frame, just above the oxygen concentrator filter.

The two filter assemblies are attached with orange Velcro for easy identification.

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2

Disconnect Orange Velcro Strap

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3

Remove and Replace Filter Assembly


  1. Pull filter assembly out of retaining clip
  2. Detach tubes on both ends
    • Depress ring to release tube
    • Pull out tube
  3. Align filter direction
    • Locate arrow on new filter assembly
    • Align with arrow on printer panel
  4. Re-insert tubes into both ends
    • Start with the rear tube for easiest access
    • Ensure the pink tube is behind this clear tube
    • Press in tube firmly
      • Don't hold down ring
    • Tug assembly to check fit
  5. Press back into retaining clip
  6. Repeat with second assembly



4

Replace Orange Velcro Strap

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Check Printer Operation

Run an air print per Carbon instructions to confirm correct replacement of the oxygen concentrator and particulate filters.

Oxygen-Related Abort If the air print aborts, repeat steps to check all connections and ensure there are no air leaks. Repeat air print and contact Carbon Support if problem persists.

Updated 04 Mar 2025
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