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Describe the procedures for testing and maintenance of positive pressure breathing apparatus. Positive pressure breathing apparatus is a kind of widely used and powerful respiratory protection equipment. Positive pressure can ensure that external gas can not enter the inside of the mask during use, and protect the user's breathing safety. Positive pressure breathing apparatus need to be checked and maintained before and after use, Xiaobian sorted out the relevant steps and attention, you can understand.

I. Quick check before use of positive pressure breathing apparatus:

1. Visually check whether there is mechanical damage;

2. Open the cylinder valve two to three times to check whether the compressed air in the cylinder reaches the required pressure (more than 200 bar);

3. Close the bottle valve, open the air supply valve, check whether the medium pressure pipe, high pressure pipe, pressure reducing valve, air supply valve and other equipment leakage;

4. Press the red button in the middle of the air supply valve to drain the pressure of the whole system;

5. Observe whether the alarm whistle alarms when the pressure gauge drops to about 55Mpa.

2. Maintenance and maintenance of positive pressure breathing apparatus after use:

1. Check whether the device has mechanical damage;

2. After each use, the dirty parts on the breathing equipment must be cleaned with warm water and neutral detergent. The band can be completely removed from the back frame for washing and disinfection, washing must comply with the cleaning agent concentration requirements and use time limits. The cleaning agent is required not to contain any corrosive components;

3. After disinfection and cleaning of respiratory protection devices, all devices must be naturally dried between 5-30 ° C, and do not contact with any thermal radiation sources, such as sun exposure, furnaces, any heating devices, etc.;

4. After each cleaning and disinfection, it is necessary to re-examine its functional indicators;

5. Store the respirator in a dry and low temperature environment, avoid direct sunlight, inflate the cylinder, pack it for next use, and visually check whether there is damage