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Checking mask type ASV-2

Operational test

1. External examination of the mask, and lung machine. Remove the mask from the bag and check its operability and the correct connection to the lung machine.

2. Check the tightness of the unit and exhalation valve in the discharge. When closed запорном valves of the cylinders, wear a mask on the face and take a breath. If there is a lot of resistance and breath done within 2-3 seconds is not possible, the unit and the valve exhalation are considered to be air-tight.

3. Check of the serviceability of the lung machine and exhalation valve in the work. Without taking off the mask from the face, open shut-off valve cylinders and make 2-3 deep inhalation and exhalation. Resistance when you inhale and exhale feel should not. Hold your breath for 2-3 seconds and listen, there are no air leaks or any noise.

4. Test of the switch of the provision of air. Close the shut-off valves of the cylinders by pressing on the lung machine gun, to let the air out of the system. Look at the gauge. With intact включателе provision of air needle should stay at the mark of 3.0 +4.0 MPa.

To delete the rest of the air out of the system unit, you must lever push-button provision of air transfer briefly in the "0" position and return to the original position "P". In this case, the arrow must be at the "zero".

4A. Check of the serviceability of signal devices. Close the shut-off valve cylinders. Slowly press the additional air supply lung machine, observe the gauge for pressure drop. Fix, when the pressure starts to work signalling device. When the proper signal device sound to appear at a pressure of 5 I a 0,5 MPa.

5. Check the air pressure in the cylinders. Open the shut-off valve cylinders and look at the gauge. The air pressure in the unit should be not less than 18 MPa (180 kg / sm.kv.).

After the operational testing, not taking off the mask from the face, газодымозащитник reports to the commander of the link with the following form, "Ivanov to work ready, pressure ...."

Check № 1

1. Check the appearance of the machine. Check the purity and consolidate the nodes of the machine, the lack of mechanical damage, the regularity of the mask, matching belt. After that, connect the mask with lung machine.

2. Check the tightness of the unit and exhalation valve on discharge. When closed запорном valves of the cylinders wear a mask on the face and take a breath. If there is a lot of resistance and breath done within 2-3 seconds is not possible, the machine and the inhalation valve are considered to be air-tight.

3. Check of the serviceability of the lung machine and exhalation valve in the work. Without taking off the mask from the face, open shut-off valve cylinders and make 2-3 deep inhalation and exhalation. Resistance when you inhale and exhale feel should not. Hold your breath for 2-3 seconds and listen, there are no air leaks or any noise. Take off the mask from the face.

4. Check the air pressure in the cylinders. Look at the gauge. Remember the meaning of the pressure.

5. Check the tightness of high-pressure systems. Close the shut-off valve cylinders. On the clock pinpoint time. If within 1 minutes the pressure, the pressure gauge, reduced by no more than 1 MPa (10 ATM), the system of high pressure of the machine is considered to be sealed.

6. Test of the switch of the provision of air. Click on the button of the lung machine gun, to let the air out of the system. Look at the gauge. When the proper switches provision of air needle should stay at around 3.0 to 4.0 MPa. Then place the switch of the provision of air from the "P" in "0" position and again in position "P". The arrow should be at the "zero".

6A. Check of the serviceability of signal devices. Slowly push the button additional air supply lung machine and watch the gauge for pressure drop. Fix, when the pressure starts to work signalling device. When the proper signal the audible alarm should appear at a pressure of 5 I a 0,5 MPa.

Check № 2

1. Cleaning the unit. Is executed after each work in the office for the removal of its units of pollution and for disinfection (washing) of the mask. Special attention should be paid to thorough drying of the respiratory valve masks. Slow drying can lead to залипанию petals valve and substantial resistance to breathe. After cleaning and disinfection, the master database ГДЗС is charging cylinders apparatus of compressed air.

2. The appearance of the machine. Check that there are no mechanical damage to the units and cylinders apparatus, reliability, and density of all connections, integrity and correctness of the connection of the shoulder and lap belts.

3. Check of the serviceability and control gear. Between the gearbox and the hose lung machine using the tee set the check the pressure gauge with a scale from 0 to 1.6 MPa, or from 0 up to 2.5 MPa. Open the shut-off valve cylinders. When air pressure in the cylinders from 18 to 20 MPa, pressure of air in the chamber reducer must be 0,45-0,5 MPa. In addition, there should be no hesitancy of the arrow pressure gauge, which is a consequence of loose fitting: valve gearbox to the saddle. If the pressure in the chamber gear deviates from the norm, it should be adjusted by changing the degree of compression of the spring gear. To do this, remove the locking nut and turning the setting screw head gear, set the desired pressure. Upon completion of the regulation of the gear screw the lock nut.

4. Check of the serviceability and regulation of the safety valve gearbox. With a little effort you press any tool to support through the hole in the adjustment screw gear. When the pressure in the chamber gear will increase to the value of the safety valve gearbox. A good safety valve gearbox must work under pressure in a chamber of a reducer of 0.9 +1.1 MPa. In the case of pressure deviations from the norm, the pressure is determined by the degree of compression springs safety valve. To do this, remove the locking nut and turning the adjusting screw of the safety valve set pressure of the trigger. After adjustment of the safety valve, screw the lock nut

5. Check of the serviceability of the lung machine in the collection with a mask. The scan is performed in two ways:

- check under excess pressure. For this it is necessary the opening of the valve exhalation in the mask from within close the cap. With the help of the special device (check disk with taps) mask is connected with реометр gauge. After sealing the mask with the check disk one outlet connects to the реометр-pressure gauge, and through the second is created under the guise of excessive pressure of 800 PA (80 mm of water. The article). Pressure drop must not exceed 50 PA (5 mm Hg.) within one minute;

- check the let-down. For this it is necessary from the opening of the exhalation valve masks pull the plug out. Further actions are performed similarly, only it is necessary to establish under the guise of a vacuum 800 PA (80 mm Hg). The fall of expansion should not exceed 50 PA (5 mm Hg.) Within one minute.

6. Checking the pressure of the lung machine and exhalation valve (for machines with helmet-mask). For this purpose it is necessary not when you remove the mask from реометра-gauge, open the valve cylinders. Forming a vacuum in the body of the lung machine, see figure реометр-gauge, in which the works pulmonary machine, determined by the characteristic noise of the air coming out of the system unit. The working pulmonary machine should work with the discharge of not more than 300 kPa (30 mm of water. The article). Then under the mask is created gauge pressure (click on the additional submission of the lung machine) and on реометр-gauge is determined, at which the pressure of work exhalation valve helmet-mask. Opening of the valve exhalation should be carried out at a pressure of not more than 400 KPa (40 mm Hg).

6A. Check of the serviceability of the lung machine III-rd type is for machines with a panoramic mask). For pulmonary machine III-rd type the following checks:

- excessive pressure in the zone of inspiration. For this you need to turn on the device excess pressure when you open the valve cylinder. The fitting of the lung machine insert the rubber plug from the outlet. Disconnect the реометр-gauge from the atmosphere (spin the wheel of the instrument). On a scale реометр-pressure gauge to determine the pressure, which should be within the range of 320-350 PA (32-35 mm Hg)

- serviceability switch excess pressure. To do this, you need to put forward the switch rod excessive pressure from the Cabinet of lung machine. To connect the реометр-pressure gauge to the atmosphere (loosen the wheel of the instrument). After the installation of fluid at the "0-0" disable system, controlled from the atmosphere (spin the wheel of the реометр-gauge). If the pressure in the cavity of the lung machine is not growing, switch excess pressure is considered to be good.

7. Check the tightness of high-pressure systems. For this it is necessary to close the valve cylinders. On the clock pinpoint time. If for one minute pressure, according to the gauge, is reduced by not more than 1МПа, the system of high pressure of the machine is considered to be sealed.

8. Check the air pressure in the cylinders. For this you need to open the valve cylinders. Look at the pressure gauge and remember pressure.

9. Test of the switch of the provision of air. To do this you should press the button of the lung machine gun, to let the air out of the system. Look at the gauge. When the proper switches provision of air needle should stay at around 3.0 to 4.0 MPa. Then place the switch of the provision of air from the "P" in "0" position and again in position "P". The arrow should be at the "zero".

10. Check of the serviceability of signal devices. Should be slowly pressed the button of an additional air supply lung machine and watch the gauge for pressure drop. Fix, when the pressure starts to work signalling device. When the proper signal the audible alarm should appear at a pressure of 5 I a 0,5 MPa.

English

Официальный дистрибьютор Draeger Safety AG & Co. KgaA, Германия

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