Air respirator's eight-step formula

What is the formula used in air respirator and the steps used in air respirator? The formula used by air respirator is as follows: two for standby, three for inspection, one for air opening, and the back cover does not leak; If the gas supply is reliable, it will be rescued again, and if there is pressure, it will report to leave quickly; The screen of the safety cover is upward, and the waist is lightly drained to eliminate the net; Sulfur, hydrogen and invisible people are poisoned, so remember to wear clothes in the air.

How to use air respirator and its steps.

1. Take the respirator out of the box.

Check the pressure of the gas cylinder, and check whether there are cracks, scratches and other defects on the surface of the high-pressure air passage. If there is no defect, close the air supply valve, slowly turn the handwheel of the air cylinder valve counterclockwise until it is fully opened, and observe the pressure gauge after 10 second, and its count shall be ≥28Mpa.

2. Check the air tightness of the system

Slowly turn the cylinder valve handwheel clockwise until the cylinder valve is completely closed (note: do not use too much force to avoid damaging the cylinder valve), and then observe the pressure gauge. If the reading of the pressure gauge drops ≤2Mpa within 1 min, it means that the respirator has good air tightness.

3. Check the newspaper

Open the cylinder valve, then close it, slowly press the center of the air supply valve cover to exhaust the air supply valve, and observe the reading of the pressure gauge. When the pressure gauge value is 5.5±0.5 MPa, the alarm should start to alarm.

4. Check whether the bottle belt is tightened.

Move the bottle belt up and down along the cylinder axis by hand. The bottle belt should not be easily moved on the cylinder, indicating that the belt has been tightened. If it is not tightened, please adjust the length of the bottle belt again to tighten it.

5. Back respirator

Turn the bottom of the cylinder to yourself, then unfold the shoulder straps and put them on both sides of the cylinder. Hold one side of the back frame with both hands at the same time and lift the respirator over your head. At the same time, the elbows are retracted close to the body, and the body leans forward slightly, so that the air breathing respirator naturally falls on the back, and at the same time, the shoulder strap ring is ensured to slide down the shoulder along the arm. Then, stand up and pull down the shoulder strap, and adjust air respirator to a comfortable position, so that the hips can bear the load.

Step 6 tighten your belt

Fasten the belt buckle on the belt, and then pull the protruding ends of the left and right sides of the belt to the back side at the same time to tighten the belt.

Step 7 put on a mask

Turn the strap on the mask out of the window, put the mask on your face with one hand and put the hood on your head with the other. The strap should be smooth and without distortion.

8. Check the tightness of the mask.

Insert the interface of the air supply valve into the opposite interface on the mask with a click. At this time, the air supply valve has been connected, plug the plug hole with your finger, inhale deeply and hold your breath for 5 seconds. You should feel the face window sticking to your face all the time (that is, negative pressure is generated and maintained in the mask), indicating that the mask is well sealed with your face, otherwise you need to fasten the headband again or wear the mask again.

9, open the cylinder valve

Close the air supply valve and turn the cylinder valve handwheel counterclockwise for at least 2 turns.

10, check the breathing performance of the respirator.

After the air source is installed, take a deep breath and open the air source valve. With this process, air will be automatically supplied, and inhalation and exhalation should be comfortable without any discomfort. You can take a few deep breaths to check the performance of the air supply valve.