1. Chemical Oxygen Self Rescuer is attached to the belt and carried around.
2. pull off the protective tape.
3. Use your thumb to pull up the red wrench and pull off the seal.
4. Uncover the upper casing.
5. Grab the headband, remove the breather and throw away the lower casing.
6. Remove the miner's lamp cap and wear the headband.
7. Unplug the mouthpiece and unplug the oxygen candle.
8. Put the mouthpiece between the lips and teeth to bite the pad.
9.Close your lips and breathe in to the Chemical Oxygen Self Rescuer.
10.Pull the nose clip spring, use the nose clip to clip the main nose, and breathe with the mouth.
11 Put on the miner's lamp and evacuate the disaster area.
