How to use air respirator correctly

Put the cylinder valve on the back of the cylinder, and adjust the up and down position and tightness of the cylinder by pulling the free end on the shoulder strap until it feels comfortable.

Step 2 fasten your belt

Insert the male buckle of the seat belt into the female buckle, and then tighten the left and right telescopic straps backward to ensure the buckle is fastened. .

Step 3 put on a mask

Loosen the five straps on the top of the mask, put the mask on the user's face, then pull down the headband from the front of the head and put the mask on the head from top to bottom. Adjust the position of the mask so that the chin enters the concave shape under the mask. First, tighten the two neck straps at the lower end, and then tighten the two headbands and top straps at the upper end. If you feel uncomfortable, adjust the tightness of the headband.

4. Mask seal

Hold the mouthpiece of the mask by hand and inhale to check whether the mask is well sealed. Take a deep breath. At this time, both sides of the mask should move towards the face. If the human body feels difficult to breathe, it means that the mask is airtight. Otherwise, tighten the headband or put on the mask again.

5. Install the air supply valve

Align the interface on the air supply valve with the socket of the mask and push it up hard. When you hear a click, the installation is complete.

6, check the instrument performance

Fully open the cylinder valve. At this time, you should be able to hear the short alarm of the alarm whistle. Otherwise, the alarm whistle fails or there is no gas in the cylinder. Observe the pressure gauge reading at the same time. The pressure of the gas cylinder shall be no less than 28 MPa. Take a few deep breaths and check the performance of the gas supply valve. Exhale and inhale comfortably, without discomfort.