1. Turn off the oven heating system first, and then turn off the chain drive switch when the oven temperature drops below 80 degrees Celsius.

2. Remove the screw of the controller housing with a screwdriver, open the controller and remove the motor chain of the conveyor belt.

3. Wear insulating gloves, remove the front and rear extension plates and leak-proof plates of the chain rack, and then pull out the chain rack of the oven from the front end of the oven.

4. Remove the chain hook with needle-nosed pliers. Pull out the chain from the chain rack, roll up the chain smoothly and put it in the prepared plastic bucket.

5. Put on the heat insulating gloves, then remove the heat insulating plates and wind shields at the front and back of the oven, put the wind shields in the plastic bucket, then pull out the air guide box in the oven, and remove the wind shields and put them in the plastic bucket.

6. Evenly spray a proper amount of kitchen cleaner on the chain and windshield, and let it penetrate 1-5 minutes. Slowly pour proper amount of hot water on the chain and wind deflector until the water level does not exceed the chain.