You're not just concerned with the replacement steps, but also with how to safely and cost-effectively maintain your family's health with every meal. This dedication is commendable. The four practical steps for replacing the sealing ring of a hard oxygen pressure cooker are: removing the old ring → cleaning the groove → installing the new ring → pressure testing. The entire process is simple and safe, and mastering it can save you over 60 yuan in service fees each time.
1. Removing the Old Sealing Ring
Ensure the pot is completely cooled and the power is off to avoid burns or accidental activation.
Use your fingers or a plastic pry bar to gently lift the edge of the sealing ring from one side of the inner pot lid, peeling it off gradually along the circumference. Do not use metal tools to avoid scratching the sealing groove of the pot lid.
2. Cleaning the Sealing Ring Groove
After removing the old ring, check the inner groove of the pot lid for any residual silicone or oil.
3. Installing the New Sealing Ring:
Apply a small amount of edible white vinegar or neutral detergent to a cotton swab and carefully wipe every part of the groove. Then wipe dry with a clean cloth to ensure no impurities remain, as this could affect the sealing effect of the new ring.
4. Installing the New Sealing Ring:
Align the new sealing ring with the positioning protrusions or grooves on the inner ring of the lid. Starting from a fixed point, press the ring into the groove gradually in a clockwise direction.
Ensure the sealing ring is fully embedded, without any warping or twisting, and that the joint closes naturally with a smooth, wrinkle-free surface.
5. Pressure Test to Verify the Sealing:
Add approximately 800mL of water to the inner pot (to the "5cm" mark). Close the lid and tighten it until the indicator arrow aligns.
Connect the power supply and select the "Porridge" or "Soup" mode.
Wait 90–120 seconds and observe whether the float valve is smoothly lifted and remains suspended. Simultaneously, listen for any hissing or leaking sounds from the pot. If no abnormalities are detected, the seal is successful.