Ninja OS401 how to remove the pressure lid
After the pressure has been released and the float valve has dropped.
Steps
DO NOT attempt to open the lid during or after pressure cooking until all internal pressure has been released through the pressure release valve and the unit has cooled slightly. Remove lid promptly to avoid re-pressurization of the inner pot.
Marked WARNING by the manufacturer Source: Important Safeguards: item 39, p. 4
If the lid will not turn to unlock, this indicates the appliance is still under pressure. DO NOT intentionally press down on float valve. Any pressure remaining can be hazardous. Let unit naturally release pressure or turn the Pressure Release Valve slowly to the VENT position to release steam. Take care to avoid contact with the releasing steam to avoid burns or injury. When steam is completely released the float valve will be in the lower position allowing the lid to be removed. If steam does not release when the pressure release valve is moved to vent, unplug the unit from the wall and let the unit naturally release pressure.
Marked WARNING by the manufacturer Source: Important Safeguards: item 42, p. 4
- Check that the red float valve has dropped.
- Turn the lid counterclockwise to unlock it.
When removing the lid, DO NOT lift the lid straight up as this may not release the seal between the lid and pot, increasing the risk of food splashing.
Marked WARNING by the manufacturer Source: Important Safeguards: item 45, p. 4
ALWAYS tilt the lid so that it is between your body and the inner pot so that you can be shielded from steam and hot liquids.
Marked WARNING by the manufacturer Source: Important Safeguards: item 46, p. 4
- Lift the lid at an angle, tilted away from you so no condensation drips into the cooker base. Do not lift it straight up.
Some steam remains in the unit after the pressure is released and escapes when the lid is opened.
Source: Installing & Removing the Pressure Lid; Natural Pressure Release vs. Quick Pressure Release Source: Installing & Removing the Pressure Lid; Natural Pressure Release vs. Quick Pressure Release, pp. 14, 15, 22
Used for
Other OS401 procedures
- How to release pressure with the quick releaseOnly when the recipe calls for it, after pressure cooking is complete and the KEEP WARM light is on.
- How to release pressure naturallyWhen pressure cooking is complete and the recipe does not call for a quick release.
- How to install the pressure lidBefore using the Pressure Cook, Steam, Sous Vide, Slow Cook or Yogurt function.
- How to pressure cookWhen a recipe uses the Pressure Cook function.
- How to run a first Pressure Cook test with waterBefore first use. The guide recommends an initial run to get familiar with pressure cooking.
- How to remove and reinstall the silicone ringTo wash the ring after use or to replace it.
- How to remove and clean the anti-clog capAfter every use, and when checking the valves before cooking.
- How to install and remove the condensation collectorBefore first use, and to hand-wash the collector after each use.
- How to clean the unit after useAfter every use.
Sources
- OS401 Owner's Guide: Foodi 10-in-1 8-QT XL Pressure Cooker. SharkNinja Operating LLC. Document OS401_IB, revision MP_REV_Mv12, 25 pages, en. ninjakitchen.com. Listed on the manufacturer's support page. Retrieved 13 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.