Ninja OS401 how to remove and clean the anti-clog cap
After every use, and when checking the valves before cooking.
Steps
Before use, ALWAYS check pressure release valve and float valve for clogging or obstruction and clean them if necessary. Check to make sure the float valve on the pressure lid moves freely. Foods such as apple sauce, cranberries, pearl barley, oatmeal or other cereals, split peas, noodles, macaroni, rhubarb, or spaghetti can foam, froth, and splutter when pressure cooked, clogging the pressure release valve. These and similar expanding foods (such as dried vegetables, beans, grains, and rice) should not be cooked in a pressure cooker, except when following a Ninja Foodi recipe.
Marked WARNING by the manufacturer Source: Important Safeguards: item 14, p. 2
- Hold the anti-clog cap between your thumb and bent index finger.
- Turn your wrist clockwise to remove the cap.
- Clean the cap with a cleaning brush.
- Check the pressure release valve and the float valve for clogging or obstruction, and clean them if necessary. The float valve on the pressure lid must move freely.
- Before the next use, make sure the anti-clog cap is mounted properly on the pressure release valve.
Source: Before First Use: Removing & Reinstalling the Anti-Clog Cap Source: Before First Use: Removing & Reinstalling the Anti-Clog Cap, pp. 2, 9
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 remove the pressure lidAfter the pressure has been released and the float valve has dropped.
- 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 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.