Positive-pressure air respirator use:
A. Positive-pressure air respirator inspection before use
1, check the full facepiece lens, tie, ring seal, exhalation valve, inhalation valve is intact, and the supply valve connection is firm. The parts of the full face mask should be clean, not dusty or contaminated by acid, alkali, oil and harmful substances, and the lenses should be wiped clean.
2. Whether the action of the supply valve is flexible, and whether the connection with the medium pressure conduit is firm.
3, the gas supply pressure gauge can normally indicate the pressure.
4, check whether the back gear is intact, the right and left shoulder straps, the right and left waist belt stitching line is not broken.
5. Check that the cylinder assembly is securely fastened and that the connection between the cylinder and the pressure-reducing valve is secure and airtight.
6, open the head valve, with the rise of pressure in the pipeline, pressure reduction system, you will hear a short sound from the gas source residual pressure alarm; head valve is completely open, check the pressure inside the cylinder should be in the range of 28MPa ~ 30MPa.
7, check the airtightness of the whole machine, open the bottle head valve for 2 minutes and then close the bottle head valve, observe the pressure drop of the pressure gauge within 1 minute is not more than 2 MPa.
8, check the match between the full face mask and the supply valve, close the inlet valve of the supply valve, inhale with the full face mask on, and the inlet valve of the supply valve should be opened automatically.
9, according to the use of regular inspection of the above items. Air respirator when not in use, the above items should be checked once a month.
Second, positive pressure air respirator wearing method
1, wearing air respirator, the first will be quick connector unplugging (in order to prevent damage to the air respirator when wearing a full-face mask), and then the air respirator will be back in the body of the person behind the body (bottle head valve at the bottom), according to the figure of the adjustment of the shoulder straps, waist belt, in order to fit the fit firmly and comfortably as appropriate.
2. Connect the quick connector and lock it tightly, and place the full facepiece on the chest so that it can be worn at any time.
3. Place the inlet valve of the supply valve in the closed state, open the bottle head valve and observe the pressure indication value to estimate the usage time.
4, wear a good full face mask (can be used without straps) for 2 to 3 times of deep breathing, feel comfortable, hold your breath or exhale when the supply valve should stop supplying air, no "hissing" sound. After everything is normal, tighten the full face mask straps, so that the full face mask and the person's forehead, face fit well and airtight. When wearing the full face mask, the strap should not be tightened too much, and the face should feel comfortable without obvious pressure and pain. After the full face mask and the person's forehead, face fit well and airtight, this time a deep breath, the supply valve inlet valve should be automatically opened.
5, the air breathing apparatus after use will be full cover of the strap unlocked, the fire helmet and full cover separation, from the head off the full cover, and at the same time close the supply valve inlet valve. Remove the air breathing apparatus from the body and close the head valve.
Extended Information:
p>Breathing apparatus
CC certification fire air respirator is also known as gas storage gas mask, sometimes also known as the fire mask. 3C certification positive pressure air respirator to compressed gas cylinder as a source of gas, but the cylinder contains gas is compressed air.
CCC certification is "China Compulsory Certification", its English name is "China Compulsory Certification", abbreviated as CCC. CCC certification mark is "CCC", is the Certification and Accreditation Administration of the State Council in accordance with "Compulsory Product Certification Regulations" (People's Republic of China *** and the State General Administration of Quality Supervision, Inspection and Quarantine Decree No. 5) developed.
It is our government in accordance with the relevant agreements of the WTO and the international rules, in order to protect the majority of consumers and animal and plant life, environmental protection, protection of national security, in accordance with laws and regulations to implement a product conformity assessment system. The main features are: the State announced a unified directory, to determine the uniform application of national standards, technical rules and implementation procedures, the development of a unified logo mark, the provisions of a unified fee. Where included in the mandatory product certification directory of products, must be certified by the state designated certification body qualified to obtain the relevant certificates and certification mark, before leaving the factory, imports, sales and service establishments in the business use. CCC certification is China's government to fulfill its WTO commitments, in December 3, 2001, issued a mandatory product certification system, from May 1, 2002, the State commission began accepting the first batch of mandatory product catalog included in the 19 categories of 132 kinds of product certification applications.
RHZK6.8/30 Positive Pressure Air Breathing Apparatus Product Performance Characteristics
RHZK6.8/30 Positive Pressure Air Breathing Apparatus is a kind of self-contained open-air breathing apparatus, which is widely used in the fire-fighting, chemical industry, shipping, petroleum, smelting, warehouses, laboratories, mines and other departments for the firefighters or rescue personnel to safely and effectively extinguish fires under the conditions of dense smoke, poisonous gas, vapor or lack of oxygen. It can be used for firefighters or rescue workers in various environments such as dense smoke, poisonous gas, steam or lack of oxygen, etc. to safely and effectively carry out fire-fighting, rescue and relief work. This series of products are equipped with a wide field of vision, bright, airtight good full cover, gas supply device with a smaller volume, light weight, stable performance of the new gas supply valve; selection of high-strength back plate and higher safety factor of high-quality high-pressure gas cylinders; decompression valve device is equipped with a residual gas alarm, in the prescribed range of cylinder pressure, the wearer can be issued with an acoustic signal, reminding the use of personnel to timely evacuation of the scene.
This series of products in the similar products, has a light weight, small size, use; maintenance is convenient, comfortable to wear, stable performance and other advantages, is engaged in rescue and relief, firefighting operations, the ideal personal respiratory protection device. The product has been tested by the National Fire Equipment Quality Supervision and Inspection Center, and meets the requirements of GA124-2004<< Positive Pressure Firefighting Air Breathing Apparatus>>. The marine breathing apparatus has been type-approved and inspected by China Classification Society.
Baidu Encyclopedia: Positive Pressure Air Breathing Apparatus