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1 RUSSIAN FEDERATION GAYSKY PLANT OF MINE RESCUE EQUIPMENT "OZON" OPERATING MANUAL P-30EX regenerative insulating respirator on compressed oxygen Made in Russia R RE7 TR/TS 019/2011 OKP Group T58

2 R OM7 DZGA CONTENTS 1. Introduction Safety instructions Purpose, device and principle of operation of the respirator Specifications Completeness of the respirator Preparation for operation Dismantling the respirator Maintenance of the respirator Cleaning, disinfection and drying of the respirator Assembling the respirator Checking the respirator Order of inclusion in the respirator Work in the respirator Possible malfunctions of the respirator and methods for their elimination Rules for storage and transportation of the respirator Manufacturer's warranties, service life and operation Disposal

3 DZGA INTRODUCTION Р РЭ7 This manual acquaints the user with the device and rules for using the R-30EX compressed oxygen regenerative insulating respirator (hereinafter referred to as the respirator). It describes the principle of operation, design, rules for preparing the respirator for work, an abbreviated procedure for checking its technical condition and recommendations for service. The respirator is manufactured in accordance with the requirements of the technical specifications of TU, a set of design documents P and contractual documents for the supply. The parameters of the respirator meet the requirements of GOST R, TR TS 019/2011 "On the safety of personal protective equipment." In accordance with this regulation, the respirator is a “Isolating Type Personal Respiratory Protective Equipment” (PPE) with a nominal protective action time (hereinafter referred to as RTA) of 4 hours and belongs to PPE groups that have the properties of protection against non-toxic dust and toxic substances. The protection factor is at least 2 x Respirators must be used and maintained by suitably qualified persons. Every year, the respirator must be completely disassembled and serviced according to the instructions for the annual inspection of the respirator. The manufacturer guarantees the correct operation of the respirator and compliance with the technical conditions or requirements set forth in the contractual documents in the event of repairs, maintenance, examination and revision of respirators by organizations that have the appropriate qualifications and an order from Gaisky Plant of Mine Rescue Equipment OZON LLC. In the event that maintenance or repair is carried out by the user's technical service, the responsibility for the operation of the respirators is transferred entirely to the owner or user of the respirators. LLC "GZ GSO "OZON" does not accept responsibility for the consequences of using respirators for purposes not mentioned in this manual, as well as the consequences resulting from failure to follow the recommendations of this manual. The manufacturer has the right to make minor design changes to the design of the respirator without notifying users, which do not affect its operation and do not impair performance. 3

4 R OM7 DZGA This manual uses a number of symbols to alert the user to features, problems, and hazards that the user may encounter when using and maintaining a respirator. INFORMATION! Contains Additional information about the rules, techniques and recommendations for the correct work with a respirator. ATTENTION! Indicates an imminently hazardous situation which, if not avoided, could result in equipment damage, injury, or even death to the user or service personnel. DANGEROUS! Indicates an imminently hazardous situation which, if not avoided, could result in serious injury or death to the user. 4

5 DZGA SAFETY INSTRUCTION R OM7 When using a respirator, the following instructions must be fully understood and strictly followed. The respirator should only be used for the purposes specified in this manual. The respirator should be regularly checked and serviced by qualified personnel. Repair of the respirator and routine maintenance may only be carried out by service centers authorized by the manufacturer. When repairing and maintaining the respirator, only original spare parts should be used. The catalog of parts and assemblies of the respirator can be ordered from a TM DZGA dealer in your region or downloaded from the website. For a short-term (no more than 15 s) accidental immersion of the respirator in water with a filled breathing bag and no activation of the lung machine, easier inhalation and increased exhalation resistance are observed. When the lung machine is triggered after the completion of the inhalation phase, the latter continues to supply oxygen to the bag and through the excess valve into the atmosphere. When immersing a respirator in water, follow following rules: strive for a horizontal position of the respirator, try to have a filled breathing bag and, if possible, avoid deep breaths that lead to the operation of the lung machine, when the lung machine is triggered to stop the oxygen supply, exhale sharply, and then, when removed from the water, repeat 2-3 sharp exhalations. 5

6 R OM7 DZHA Restrictions on the use of RPE The respirator supplies the wearer with breathing gas for approximately 4 hours, isolating the wearer from the surrounding atmosphere, which may be contaminated or contain insufficient oxygen to breathe. Only use a respirator when performing following conditions: The user of the respirator has undergone special training and is allowed to work in a respirator for medical reasons in the prescribed manner; The operating conditions are as described in Appendix 1; The oxygen cylinder is fully filled; The regenerative cartridge is equipped with an absorber; The respirator is regularly maintained and checked in accordance with this manual; The respirator undergoes scheduled maintenance once a year by the user or an authorized service center. The actual HRV for a particular user may differ from the nominal due to various factors. The actual HRV can be affected by: the physical condition of the user (poor physical condition of the user may be the cause of increased oxygen consumption); the nature of the work performed (the more actively the user works, the more he consumes oxygen); emotional condition user (worried or agitated user may consume more oxygen); condition of the respirator (poorly maintained or poorly adjusted respirators can leak); incorrectly loaded regenerative cartridge; 6

7 DZGA R RE7 pressure in the cylinder before use (if the cylinder is not fully filled, work time decreases proportionally). DANGEROUS! In some cases, the actual HRV of a respirator may be less than 4 hours. Users who are in poor physical condition, tense, oversized, working in difficult conditions, untrained or not maintaining a respirator in proper condition will use up oxygen much faster. 7

8 R OM7 PURPOSE, DEVICE AND OPERATING PRINCIPLE OF THE DZGA RESPIRATOR technical work in coal mines and other industrial production facilities. The respirator reliably protects the human respiratory organs in an atmosphere with insufficient oxygen content, containing toxic gases and coal dust, and is designed to operate at air temperatures from minus 20 C to plus 60 C, relative humidity up to 100% and atmospheric pressure (70-125) kPa. DANGEROUS! Attempting to use a respirator underwater could result in serious injury or death. Respirator regenerating device with pure oxygen supply. The breathing gas mixture circulates in a closed breathing circuit. Lime chemical absorber (KhP-I) absorbs carbon dioxide contained in the mixture of gases exhaled by the user. In the breathing bag, the gas mixture is enriched with oxygen from an oxygen cylinder. At low and normal respiratory rates (resting, walking at a normal pace), oxygen is supplied to the breathing bag through a constant flow metering valve. At an increased respiratory rate, an additional volume of oxygen is supplied through a lung machine or a manual bypass valve. The respiratory mixture heated as a result of the regeneration reaction passes through the cooler. To lower the temperature of the inhaled gas mixture, and thereby minimize user discomfort, as well as during operation at elevated temperatures environment a water ice briquette cooling element is placed in the respirator refrigerator. crushed ice can be used as a cooling element. The respirator has a device signaling that the cylinder valve is closed or there is no oxygen in the oxygen supply system. Also, the respirator is equipped with a signal that is triggered when the pressure in the cylinder drops below 5.5 MPa. 8

9 DZGA TECHNICAL CHARACTERISTICS R RE7 Nominal time of protective action, h 4 1 Oxygen cylinder volume, l 2 Oxygen cylinder pressure, MPa 20 Useful volume of the breathing bag, l 5 Oxygen supply, constant, l/min 1.4±0.1 automatic, l/min 80 2 Oxygen supply, bypass, l/min Weight of lime chemical absorber, kg 2.3 Weight of empty respirator, kg 8.8 4 Weight of equipped respirator, kg 12.6 5 Opening pressure of lung governed demand valve, Pa Opening pressure excess valve, Pa Sound signal actuation pressure, MPa 5.5±0.5 Respirator dimensions (L x W x H), mm 450x375x165 7 Breathing resistance during inhalation and exhalation, no more than, Pa 25±1) C and atmospheric pressure (100±4) kPa. 2. At a pressure in the cylinder from 20 to 3 MPa. 3. At a pressure in the cylinder from 20 to 2 MPa, and a vacuum pressure of 500 Pa. 4. Without oxygen, HP-I, cooling element, refrigerator cover, mask. 5. No mask. 6. At a flow of 10 l/min. 7. Without belt system and breathing hoses. 8. With pulmonary ventilation 30 l/min 9

10 R RE7 COMPLETENESS OF DZGA RESPIRATOR Ring...1 pc. 2. Shield...1 pc. 3. Whistle...1 pc. 4. Shoulder strap...2 pcs. 5. Waist belt ... 1 pc. 6. End belt ... 2 pcs. 7. Shoulder shock absorber ... 1 pc. 8. Shock absorber waist ... 1 pc. 9. Oxygen distribution block...1 pc. 10. Alarm device...1 pc. 11. Cylinder with valve ... 1 pc. 12. Respirator backpack...1 pc. 13. Tee with a safety valve ... 1 pc Oxygen presence signaling device ... 1 pc. 15. Capillary with pressure gauge...1 pc. 16. Breathing bag...1 pc. 17. Refrigerator...1 pc. 18. Regenerative cartridge...1 pc. 19. Excess valve ... 1 pc. 20. Breathing valve...2 pcs. 21. Hose system with plug...1 pc. 22. Full face mask...1 pc. 23. Spare parts kit...1 set 24. Nut... 1 pc.

11 DZGA R RE Spare parts and accessories supplied by the factory on a separate order: Spare regenerative cartridge Spare cylinder with valve Spare breathing bag Set of tools and accessories

12 R OM7 GETTING STARTED FOR DZGA The respirator is delivered assembled with an unloaded regenerative cartridge and an empty oxygen cylinder. First use Before using the respirator for the first time, it is necessary to check the integrity of the seals, visually verify that there are no damages, equip the regenerative cartridge (section “Regenerative cartridge equipment”), install the cylinder filled with oxygen and check the respirator (section “Respirator check”). Always check the integrity of the seals, the correspondence of the serial numbers of the respirator components to the marks in the product form. Disassembly, assembly, equipment and testing of the respirator on control devices should be carried out in specially designated rooms with calibrated equipment (Appendix 1). Before proceeding with these operations, you must thoroughly wash your hands with soap and wipe the tools from the kit with rectified technical ethyl alcohol. DANGEROUS! To avoid serious injury or death, never allow compressed oxygen to come into contact with oil, grease, or similar organic contaminants. This may cause a fire or explosion. 12

13 DZGA DISASSEMBLY OF THE RESPIRATOR R RE7 During the first disassembly, remove the seal from the latch of the respirator body. ATTENTION! Perform GC disassembly of the respirator without the use of a tool, except in cases where the use of a tool is expressly prescribed by this manual. The use of a tool during disassembly and assembly of the respirator can damage and break the respirator. Respirator body Place the respirator on a hard surface in front of you, press the spring latch and detach the shoulder ring. 13

14 E OM7 DZGA Lay the respirator horizontally on a stable, level surface. With the thumbs of both hands, simultaneously press the two spring clips in the direction of the waist belt. Open the respirator shield and disconnect it. 14

15 DZGA R RE7 Oxygen cylinder Make sure that the oxygen cylinder valve is closed and that the connections are not contaminated with oil or grease. Loosen the connection between the cylinder valve and the oxygen distribution block by hand and separate them. Take the balloon with both hands and, lifting it by the bottom, take it out. ATTENTION! Do not use a cylinder release tool. The oxygen cylinder must only be disconnected manually. 15

16 R OM7 DZGA Airway system The airway system includes breathing hoses, inhalation and exhalation valves, a regenerative cartridge, a refrigerator, and a breathing bag. Disconnect the breathing bag from the oxygen distribution unit. Disconnect the oxygen signal tube fitting from the T-piece by pulling the retainer towards the O2 block. 16

17 DZGA R RE7 Press the regenerative cartridge lock and pull out the air system by lifting the cartridge. The regenerative cartridge is connected to the cooler by a bayonet connection. Breathing Hoses Disconnect the inspiratory and expiratory breathing hoses from the cooler and regenerative cartridge, respectively. Remove the inspiratory and expiratory valves. INFORMATION! The inspiratory and expiratory valves can only be installed in the position foreseen by the design of the respirator. Swap or install reverse side structurally impossible. Unscrew the special screw and disconnect the plug of the junction box. 17

18 E OM7 DZGA Breathing bag Disconnect the breathing bag from the cooler and regenerative cartridge, respectively. Refrigerator Disconnect the refrigerator by turning it 45 counterclockwise about the axis of connection with the regenerative cartridge. Remove the coolant reservoir cap. 18

19 DZGA R RE7 Regenerative cartridge Unscrew the fixing nut and remove the excess valve. Oxygen distribution unit If it is necessary to check or adjust the oxygen distribution unit, unscrew the captive screw with a screwdriver and disconnect the unit. 19

20 R OM7 MAINTENANCE OF THE DZGA RESPIRATOR Equipment of the regenerative cartridge The regenerative cartridge must be equipped with HP-I corresponding to the requirements of GOST ATTENTION! Use only specially designed HP-I to fill the regenerative cartridge. Load the cartridge in the following sequence: 1. Weigh the empty cartridge together with the cap to the nearest 5 g; 2. Pull back the movable baffle with the tensioner; 3. Sift HP-I through a 3 mm sieve; 4. Collect the HP-I that has spilled through a sieve into a plastic bag and dispose of it (Utilization section), and pour the remaining HP-I into the cartridge. INFORMATION! When reloading a regenerative cartridge, use a reloading device manufactured by GZ GSO OZON LLC. 20

21 DZGA R RE7 Device for reloading a regenerative cartridge The device consists of: 1. Funnel for filling HP-I; 2. Tension devices for pulling back the movable partition; 3. Seal. The catalog of parts and assemblies of the respirator can be ordered from a TM DZGA dealer in your region or downloaded from the website. Equipment for a regenerative cartridge can be produced in two ways: - using a sealant; - using a funnel. 21

22 R OM7 DZGA Loading a regenerative cartridge using a seal Pressing the latches, remove the cap of the regenerative cartridge. Make sure there is no spent HP-I left in the regenerative cartridge. Insert the tensioner hook into the bottom mesh loop hole of the regenerative cartridge. Turn the nut until the springs are compressed and the baffle is in contact with the thrust bars. 22

23 DZGA R RE7 Install the seal body on the cartridge neck and pour HP-I in three or four portions, sealing it with a light tapping of the palms on the side of the cartridge body. After tapping ceases to contribute to a noticeable seal, pour HP-I to about 3/4 of the volume of the seal body. Install the cover with the stem into the body and vigorously strike the cartridge body with the palm of your hand, additionally seal HP-I. Top up or pour out HP-I until the stem goes down as far as it will go. 23

24 R RE7 DZGA Having unscrewed the union nut, remove the seal from the cartridge. Squeezing the wire spring latch of the plug with your thumb and forefinger, put it on the loading neck of the cartridge and insert both protruding arcs of the latch under the lower (inner) end of the fitting. Remove baffle pullers. To do this, unscrew the nut and remove the hook from the loop hole. 24

25 DZGA R RE7 Loading a regenerative cartridge using a funnel Loading a cartridge can also be done using a funnel. In this case, when compacting the last portions of HP-I, it should be lightly pressed with the fingers of the hand through the loading opening, while tapping with the palm of the other hand on the side of the cartridge body. The level of HP-I should coincide with the edge of the neck. Place the funnel on the regenerative cartridge and pour HP-I in three or four portions, compacting it with a light tapping of the palms on the side of the cartridge body. After equipping, remove the funnel and install the plugs on the loading neck. After installing the plug, regardless of the method of loading the regenerative cartridge, shake the cartridge to remove the spilled HP-I through the fitting. To remove HP-I fines, blow air through the fitting for 1 min [flow rate () l/min]. Weigh the cartridge to the nearest 5 g and compare its mass with the mass before loading. The mass of HP-I must be at least 2.3 kg. Reinstall the overflow valve and secure it with the union nut. When shaking the loaded cartridge, there should be no movement and pouring of the entire mass of HP-I. Reload a spare regenerative cartridge as described above, but do not install an excess valve on the spare cartridge, but screw plastic plugs onto three fittings, weigh the cartridge before and after loading and seal it. It is recommended to put imprints of the detachment, platoon, squad, as well as the date the cartridge was equipped on the seals. ATTENTION! Do not reload a regenerative cartridge with used or unsifted HP-I, or expired HP-I. 25

26 R OM7 DZGA Filling the respirator cylinder with oxygen The respirator cylinder must be filled with gaseous oxygen suitable for breathing and having the parameters of medical oxygen with a purification degree of more than 99.5% by volume. The oxygen pressure in the cylinder must comply with the values given in Annex 1 for various temperatures. The oxygen temperature in the cylinder is assumed to be equal to the ambient temperature if the filled cylinder is kept under such conditions for at least 5 hours. Preparing the cooling element Accessories To freeze ice briquettes, use special forms for water ice with lids. To prevent premature defrosting of the cooling elements, store them in a thermos. For the convenience of carrying a thermos to the place where the cooling elements are used, use a bag. The catalog of parts and assemblies of the R-30EX respirator can be ordered from a TM DZGA dealer in your region or downloaded from the site. Recommendations for the preparation of cooling elements freezer of an industrial, commercial or household refrigerator until they are completely frozen. ATTENTION! The temperature in the freezer should not exceed minus 5 C 26

27 DZGA R RE7 After complete freezing, store at least one set of six cooling elements in the freezer, and one in a thermos, which should preferably be kept in the refrigerator. Put the cooling element into the respirator refrigerator before starting work, if the journey to the high temperature zone takes no more than 30 minutes. Otherwise, it is recommended to carry cooling briquettes with you in a bag with a thermos. The effective action time of an ice briquette is about 1.5 hours, so the required number of briquettes can be determined based on the expected duration of work and physical activity. A completely frozen ice briquette provides a decrease in the temperature of the inhaled air by 4-7 C. ATTENTION! The effective time of the cooling element can vary significantly depending on the load and ambient temperature. 27

28 GR OM7 DZGA CLEANING, DISINFECTION AND DRYING OF THE RESPIRATOR Thoroughly clean and disinfect all parts of the respirator that come into contact with the exhaled gas mixture after use. Other parts not in contact with the exhaled gas mixture should be cleaned as needed. Disinfect the respirator when putting it on the equipment, during routine maintenance, after completing the work to eliminate the accident, as directed by the doctor in connection with the detection of an infectious disease in the user, and also when putting the respirator for long-term storage (more than a month). When cleaning parts of a respirator that are contaminated hazardous substances wear protective clothing, shoes, gloves and goggles. Cleaning Clean all parts of the respirator in warm water at a temperature of plus (40-50) C with the addition of a universal liquid cleaner. Do not use organic solvents such as acetone, trichlorethylene or similar industrial solvents. Do not use cleaners containing bleach. ATTENTION! The use of organic or industrial solvents, as well as cleaners containing bleach, may damage parts of the respirator. Rinse the parts of the respirator in warm, clean water. Completely rinse all detergent residue from all parts of the respirator. Disinfection For disinfection, soak the airway system components in a disinfectant, eg Dismozon pur solution, for 60 minutes. Determine the concentration of the solution according to the manufacturer's instructions. 28

29 DZGA R RE7 ATTENTION! Prolonged processing and high concentrations of the disinfectant can damage parts of the respirator. It is unacceptable to use organic solvents (gasoline, kerosene, acetone) and chlorine-containing bleaches for disinfection. Other disinfectants may be used, provided that the appropriate instructions for these products are followed. After disinfection, rinse the components of the air system in clean running water. Drying Dry the respirator airway system components with warm air at a temperature not exceeding plus 60 C. It is advisable to use a drying cabinet or air dryers to dry the parts of the respirator. Dry all knots thoroughly warm air, especially the breathing and overflow valves, since residual moisture affects the operation of these components. It is important to dry all parts of the respirator well, especially the straps and harness components, before long-term storage to prevent the formation of mold and mildew. ATTENTION! Drying the elements of the air duct system in direct sunlight or radiant heat is strictly prohibited. 29

30 R OM7 ASSEMBLING THE DZGA RESPIRATOR Before assembling the respirator, make sure that all its parts do not have deformations, tears or other damage, the serial numbers of the units correspond to those indicated in the product data sheet. Before assembly, all parts and parts of the respirator must be cleaned, disinfected and dried. Make sure all rubber seals are in place and tight, and connections are free of oil or grease. DANGEROUS! If compressed oxygen comes into contact with oil, grease, or similar contaminants, a fire or explosion may result. Oxygen distribution unit If the oxygen distribution unit was removed when disassembling the respirator, install the block with alarm devices and a capillary tube with a pressure gauge into the respirator's backpack. Tighten the captive screw. Regenerative Cartridge If a spare regenerative cartridge is used, attach the overflow valve and secure it with the union nut. Refrigerator Attach a refrigerator to the regenerative cartridge. To do this, dock the bayonet connection of the refrigerator and the regenerative cartridge with an offset of 45 and turn the refrigerator counterclockwise relative to the axis of connection with the regenerative cartridge until it stops. Put the lid on the refrigerator tank. Breathing Hoses Install the inspiratory and expiratory valves in the cooler and regenerative cartridge respectively. The design of the valves prevents them from being installed incorrectly. Connect the breathing hoses to the cooler and regenerative cartridge. thirty

31 DZGA R RE7 ATTENTION! The inspiratory and expiratory valves cannot be installed backwards by design. Attach the plug to the junction box and fix it with a special screw. Breathing bag Attach the breathing bag to the flanges of the condenser and regenerative cartridge. Airway System Install the airway system into the respirator body. To do this, insert the lower part of the regenerative cartridge under the reinforcing frame, then gently tilt the regenerative cartridge with the cooler forward until it locks in the correct position. Ensure that the breathing tubes and bag are not pinched or pinched between the respirator body and the regenerative cartridge. The breathing bag must be freely positioned in the compartment and not twisted. Connect the breathing bag flanges to the oxygen distribution unit signaling device and the continuous oxygen connection. Connect bag tube fittings and oxygen alarm. Oxygen cylinder Carefully inspect the rubber gasket: it should not have any damage or swelling. The surfaces to be joined must be clean. Grab the balloon with both hands and place it in the respirator body. Align the valve of the oxygen cylinder with the coupling of the oxygen distribution unit. Screw on the coupling by hand. The union nut must be freely screwed onto the cylinder fitting without the use of a wrench. Check that there is no oxygen leakage at the connection between the cylinder and the block using the soaping method. DANGEROUS! Leakage in the high pressure system is not allowed! 31

32 R OM7 DZGA Closing the body of the respirator Place the respirator horizontally on a stable surface with the outer side of the satchel down. Attach the lower part of the shield to the lower loops of the backpack and close it by simultaneously pressing the latches. Press the locking latch and attach the ring on the top of the shield. 32

33 DZGA CHECKING THE RESPIRATOR R RE7 A complete check of the respirator and its adjustment are carried out on control devices of the UKP-5 type, or similar. When setting the parameters of the respirator, it is preferable to set the average values of each parameter, and the tightness parameter close to zero. Detailed description the respirator test procedures are given in the documentation of the corresponding control device. It is recommended to check the individual parameters in the following order. Lay the respirator on the table with the outer side of the satchel down and attach it to the control device. INFORMATION! The pressure in the cylinder when checking and adjusting should be (20.0 ± 1.0) MPa. Checking the oxygen distribution block Checking the oxygen distribution block is carried out together with all the assemblies of the respirator assembly. Open the cylinder valve and, using the soap method, check once again for oxygen leaks (at the cylinder shut-off valve, cylinder connection to the oxygen distribution unit, emergency valve, capillary shut-off valve, pressure gauge and external connections of the unit and alarm device). Eliminate the detected leaks by tightening the nuts or replacing the seals. In some cases, it is allowed to check the oxygen distribution unit outside the respirator, separately from other units. In this case, it is necessary to repeat the check after installing and connecting the oxygen distribution unit to the respirator. Overpressure tightness Close the cylinder valve. Close the overflow valve opening with a plug. Create an excess pressure of about 900 Pa in the respirator system using a control device. After (2-3) minutes, release this pressure to 800 Pa, turn on the stopwatch and observe the readings.

34 R RE7 DZGA yami instrument pressure gauge. If the pressure drop exceeds 30 Pa/min, locate and repair the leak and retest. Test procedure Time, s Pressure, Pa Permissible pressure drop, Pa/min Pressurizing the respirator Pressure stabilization Testing Excess valve opening pressure Close the cylinder valve. Open the relief valve opening. Create an air flow of 1 l/min using the control device and observe the readings on the pressure gauge of the control device. The value of excess pressure must be within (200 ± 100) Pa. If this value is outside the specified limits, it is allowed to replace the pressure relief valve spring. In this case, it is necessary to make an appropriate entry in the check log. Check procedure Flow rate, l/min Min. opening pressure, Pa Max. opening pressure, Pa Creation of air flow Vacuum tightness Close the cylinder valve. Open the relief valve opening. Create a vacuum pressure of about 900 Pa in the respirator system. After (2-3) minutes, release this pressure to 800 Pa, turn on the stopwatch and observe the readings of the instrument pressure gauge. If the pressure drop exceeds 30 Pa/min, locate and repair the leak and retest. Test procedure Time, s Pressure, Pa Vacuum creation in the respirator Permissible pressure drop, Pa/min Pressure stabilization Testing

35 DZGA R RE7 Saliva pump Close the cylinder valve. Open the relief valve opening. Create a vacuum pressure of about 900 Pa in the respirator system. After (2-3) minutes, release this pressure to Pa, press the bulb of the saliva pump 3-4 times. The increase in vacuum pressure in the system indicates the health of the pump. Otherwise, check the correct assembly of the inlet and outlet valves, as well as the tightness of the connection of the rubber bulb of the pump. Check procedure Time, s Pressure, Pa Number of pressings on the pear Creating a vacuum in the respirator Pressure stabilization Testing 10 from -700 to Vacuum pressure of opening the lung machine Open the cylinder valve. Using a control device, remove air from the breathing bag and create a vacuum pressure in the respirator system. The pressure at which the lung machine opens and operates must be within (200 ± 100) Pa, the amount of oxygen supply is 10 l / min. If this value is outside the specified limits, you can adjust it (“Lung demand valve adjustment”) by making an appropriate entry in the check log. Check procedure Flow rate, l/min Min. opening pressure, Pa Max. opening pressure, Pa Testing Continuous oxygen supply ATTENTION! The pressure in the cylinder when checking and adjusting should be (20.0 ± 1.0) MPa. Open the cylinder valve. After the value of the constant supply is established, after 2-4 minutes, determine its value using the control device. If the value of the constant supply is out of range (1.3-1.5 l / min), you can adjust it (“Adjusting the constant supply of oxygen”) by making an appropriate entry in the test log. 35

36 R RE7 DZGA Checking procedure Flow rate, l/min Min. flow, l/min Max. flow rate, l/min Testing 10 1.3 1.5 Lung governed demand valve capacity ATTENTION! The pressure in the cylinder when checking and adjusting should be (20.0 ± 1.0) MPa. Open the excess valve opening, open the cylinder valve. Create a vacuum in the system with a flow rate of 70 l/min. If the oxygen flow rate of the lung governed demand valve is out of range, replace the oxygen distribution unit Test procedure Flow rate, l/min Min. flow, l/min Max. flow rate, l/min Testing Oxygen supply bypass ATTENTION! The pressure in the cylinder when checking and adjusting should be (20.0 ± 1.0) MPa. Close the opening of the excess valve with a plug, open the cylinder valve. Press the emergency oxygen supply button all the way, determine the amount of oxygen supply using the control device. Repeat the check at a pressure in the cylinder of 3-4 MPa. If the amount of additional supply is out of range (l / min), replace the oxygen distribution unit. Checking procedure Cylinder pressure, MPa Min. flow, l/min Max. flow rate, l/min Testing 20.0±1, Testing 3.0±1, Further tests are carried out without the use of a control device. 36

37 DZGA R RE7 Closing the pressure gauge capillary tube Open the cylinder valve, close the shut-off valve, and then close the cylinder valve. Release oxygen from the oxygen supply system through the emergency valve and observe the reading on the respirator pressure gauge. The pressure drop in the capillary tube must not exceed 2.0 MPa/min. Test procedure Time, s Permissible pressure drop, MPa/min Testing 60 2 Inhalation and exhalation valve To check the tightness of the inhalation valve, take the mouthpiece into your mouth, pinch the exhalation hose and try to exhale into the respirator system. If exhalation is not possible, the inspiratory valve is considered to be tight. To check the tightness of the exhalation valve, pinch the inspiratory hose and try to inhale the gas mixture from the respirator system. If inhalation is not possible, the exhalation valve is sealed. Oxygen pressure reduction signal Open the oxygen cylinder valve, after a short beep, close the cylinder valve. When the pressure drops to a value of (5.5 ± 0.5) MPa, a short-term clear signal is heard. If the alarm pressure is different from set value, it is necessary to replace the alarm device. Lack of oxygen alarm To test the operation of the mechanical alarm for the lack of oxygen in the oxygen supply system, with the cylinder valve closed, exhale deeply into the respirator, and then inhale. A well-audible sound signal generated by the device during inhalation characterizes the health of the mechanical sound device. With the cylinder valve open and the presence of oxygen in the system, the sound signal when breathing in a respirator should not work. 37

38 R OM7 DZGA Adjustment of the lung governed demand valve Remove the cap from the lung governed demand valve, remove the mesh and the plastic cap from the adjusting screw. Loosen the fixing screw. Repeat the procedure for checking the vacuum pressure of opening the lung governed demand valve. Turn the nut clockwise if the set pressure is too high, and counterclockwise if the set pressure is too low. Set the vacuum opening pressure of the lung governed demand valve in the range from -100 to -300 Pa. Tighten the fixing screw, install the mesh and plastic cap, install the lung governed demand valve cap. Adjusting the constant supply of oxygen Remove the oxygen distribution unit from the respirator and connect it to the UKP-5 device using an adapter. Connect the filled oxygen cylinder to the oxygen distribution block. Loosen the locking screw and repeat the continuous oxygen supply test procedure. Turn the reducer nut clockwise if the flow is too high and counterclockwise if the flow is too low. Set the value of the constant supply in the range of 1.3-1.5 l / min. Tighten the fixing screw. After installing the oxygen distribution unit in the respirator, repeat the test procedure. 38

39 DZGA ORDER OF INCLUDING IN THE RESPIRATOR R RE7 Before using the respirator, make a cursory check to determine the performance of the main components. A quick check of the respirator During a quick check of the respirator, you need to make sure that: the tightness of the respirator with the mask; operability of respiratory valves; serviceability of the lung machine; bypass serviceability; serviceability of the excess valve; sufficient supply of oxygen; serviceability of the signal for reducing the pressure in the cylinder below 5.5 MPa; serviceability of the signal of the lack of oxygen. serviceability of the signal whistle. Putting on the respirator Lay the respirator on a firm horizontal surface with the harness up, or place it in front of you on the ground with the harness away from you. Put the hose system on the satchel. Unfasten the waist belt, loosen the tension of the end and shoulder belts. 39

40 R OM7 DZGA Put your hands into the shoulder straps and take the respirator by the body. Raise the respirator above your head so that the breathing hoses are on your chest. 40

41 DZGA R OM7 Make sure that the shoulder straps are on the inside of the elbows and allow the respirator to slide over the shoulders. 41

42 R OM7 DZGA Adjust the height of the respirator on the body using the end straps. Fasten the waist belt and pull it up to a comfortable position. 42

43 DZGA R RE7 Insertion into the respirator Insert into the respirator in the following sequence: Put on the mask. To do this, loosen the head straps. While holding the headband, place your chin in the notch in the mask and put the mask straps over your head Tighten and adjust the head straps in the order shown 43

44 R RE7 DZGA To check the tightness of the fit, a tightness test must be carried out. To do this, tightly close the connecting element of the mask with the palm of your hand (check with the palm of your hand). When inhaling, a vacuum should be created and there should be no air leakage. When exhaling, excess pressure must be created, and air must not escape under the sealing welt. Check tightness before each use. ATTENTION! Inclusion in a respirator is carried out with a headgear removed and without a helmet. 44

45 DZGA R RE7 Attach the pressure gauge to the strap using a carabiner. Fully open the cylinder valve. Turn the valve handle in the opposite direction by 180 o. Remove the junction box plug and connect the mask. Take several breaths from the respirator system until the lung machine operates, exhaling through the nose. Pinch the inhalation hose with your hand and try to inhale. With a good valve, inhalation is impossible. Pinch the exhalation hose with your hand and try to exhale. With a good valve, exhalation is impossible. 45

46 R OM7 DZGA Put on your helmet. 46

47 DZGA WORK WITH A RESPIRATOR R OM7 When working with a respirator, you must strictly follow the instructions and follow the safety rules when working in an environment unsuitable for breathing. DANGEROUS! Failure to follow the rules and guidelines below could result in serious injury or death. Do not constrain the chest and abdomen with straps so as not to interfere with normal breathing; Alternate work with periods of rest, the number and duration of which should be determined by the senior commander; If, with slight exertion, rapid breathing or headache, knocking in the temples, sour taste in the mouth, which indicates an excess of carbon dioxide in the respirator system, immediately purge the breathing bag with oxygen using a bypass, switch to an auxiliary respirator or any other insulating RPE. DANGEROUS! High levels of CO 2 in the breathing mixture can cause serious injury or death. If a malfunction or malfunction of the respirator occurs and cannot be repaired, stop work immediately and move out of the unbreathable environment. When working in a respirator, which implies significant physical activity, it is necessary to dose it correctly, monitor breathing, prevent respiratory failure and more oxygen consumption than provided. ATTENTION! Stop work or slow down in case of rapid shallow breathing caused by excessive physical or nervous tension. 47

48 R OM7 DZGA If air has been sucked into the respirator system from the surrounding atmosphere or health has deteriorated, purge the respirator with oxygen through the bypass. With proper inclusion in the respirator and the absence of suction during operation, periodic purge of the respirator is not required. Every minute of work, saliva and moisture should be removed from the junction box using a rubber bulb. DANGEROUS! Do not abuse the ability to use the bypass, as this leads to a rapid consumption of oxygen. Switching off from a respirator in an atmosphere unsuitable for breathing, even for short periods, is strictly prohibited. Monitor the supply of oxygen in the cylinder on the pressure gauge. If necessary, loosen the right shoulder strap for the duration of the test using the self-tightening ring. When working in low temperature conditions, enter the gaseous environment only after heating the junction box, breathing valves and HP-I in the respirator cartridge by breathing. When working at low temperatures, it is possible to reduce the time of the protective action of the respirator due to the deterioration of the sorption properties of HP-I. Do not allow the respirator to cool down when leaving for the elimination of an accident, transport it in an insulated car. Work only in a respirator with thoroughly dried components of the air duct system. Do not turn off the respirator when resting in places with an ambient temperature below 0 C; Do not exceed the specified duration of work in a respirator. When working in conditions high temperature more than plus 26 C, the use of a cooling element is mandatory. 48

49 DZGA R RE7 The design of the respirator provides for the ability to independently equip the refrigerator with a cooling element without turning it off from the respirator. To do this, without removing or disconnecting the mask, remove the respirator bag over your head, put it in front of you on the ground or on some flat object (table, box) and equip the refrigerator with a cooling element while continuing to breathe normally. To equip the respirator refrigerator with an ice briquette, remove the briquette from the thermos along with the form. Turn the form upside down, take the fallen briquette, put the respirator in the refrigerator and tightly close it with a rubber lid so that when the ice melts, the water does not spill out of the refrigerator. 49

50 R RE7 DZGA Another way of equipping is also possible, when users, without switching off from respirators, equip each other's refrigerators. To do this, remove the shoulder strap from the right shoulder and pull the right side of the respirator pack from the back. The second user at this time must put the cooling element into the refrigerator and close the rubber cover. 50

51 DZGA R RE7 POSSIBLE RESPIRATOR MALFUNCTIONS AND THEIR SOLUTIONS Malfunctions during operation Malfunction Remedy Notes Damage to breathing hoses. Increasing inspiratory resistance. Increased expiratory resistance. Faulty oxygen distribution unit or lung governed demand valve. Rapid loss of oxygen. Leak through capillary tube. Freezing of breathing valves to seats. Filling high pressure channels with ice. Freezing saliva removal pump. Add oxygen to the respirator system bypass or switch to another respirator. Add oxygen to the respirator system bypass, inspect the inspiratory hose, remove the cause of the pinch. Add oxygen to the respirator system bypass, inspect the exhalation hose, remove the cause of the pinch. Switch to another respirator. If no other respirator is available, periodically supply oxygen to the counterlung bypass so that the bag is filled with oxygen at the start of inspiration. Switch to another respirator. Close shutoff valve. Switch to another respirator. Switch to another respirator. Switch to another respirator. Get out of the unbreathable environment. If the cause persists, switch to another respirator and move out of the unbreathable environment. Get out of the unbreathable environment. 51

52 R OM7 DZGA Faults during test Fault The respirator does not seal when overpressured. Cause of occurrence Leaky connection of the respirator to the control device. The connections of the air system are loose. Leaky components of the air duct system. Cylinder valve leaking. Leaky oxygen supply system. Remedy Check the gaskets and seals on the control device fittings and at the respirator connection. Attach the respirator. Check gaskets and tighten connections if necessary. Install the plugs on the fittings of the breathing bag, separately from the backpack, connect the air system to the control device and create a pressure of 800 Pa in the system. Locate the leak by immersion in water and repair it. Replace valve bottle. Contact an authorized service center to replace the damaged assembly. 52

53 DZGA R RE7 Malfunction Cause Remedy The respirator is not tight at vacuum pressure. The constant supply of oxygen is above normal. Leaky connection of the cylinder valve with the leg of the oxygen distribution unit. Leakage of oxygen from the cylinder through the valve into the respirator system. Cylinder valve not sealed. (suction through stuffing box seal). Leakage of oxygen through the emergency valve device or the main valve of the lung governed demand valve. Disconnect the cylinder from the respirator, inspect the rubber seal and replace it if necessary. By washing, check the tightness of the overlap of the seat with the valve of the cylinder shut-off valve, if necessary, replace the cylinder with the valve. Replace gland packing or replace cylinder with valve. Contact an authorized service center to replace the damaged assembly. The constant supply of oxygen is below normal. Insufficient supply of oxygen by the lung machine. The dosing opening of the oxygen distribution unit or its filter is clogged. Reduced oxygen pressure in the reducer chamber due to spring shrinkage. Reducer filters or oxygen distribution unit feet are clogged. Insufficient throughput of the gearbox valve device. Reduced pressure in the reducer chamber due to shrinkage of the reducer spring. Contact an authorized service center to repair or replace the damaged assembly. Adjust the constant supply of oxygen using the reducer head. Contact an authorized service center to repair or replace the damaged assembly. Contact an authorized service center to repair or replace the damaged unit. Adjust the pressure in the reduction chamber 53

54 R OM7 DZGA Malfunction Cause Remedy Rubber band not fitted Put on a tube or gasket. a tube. Tube gasket not fitted. Spontaneous continuous operation of the lung machine. The lung machine does not open. The membrane does not block the nozzle due to the ingress of a foreign body under it. Misalignment of the membrane during assembly. Inspect the diaphragm and repair. Eliminate skewed membrane. 54

55 DZGA R RE7 Malfunction The lung governed demand valve opens and operates at a vacuum pressure of more than 300 Pa or less than 100 Pa. The excess valve opens and operates at a pressure of less than 100 Pa. The excess valve opens and operates at a pressure of more than 300 Pa. Cause of occurrence Shrinkage of the control springs. Excess valve control spring weakened. Penetration of HP-I particles between the valve and the rubber cushion or shaped rubber ring and bottom. The non-return valve is “stuck” due to poor-quality washing and drying. Remedy Remove the polyethylene cap, cap with mesh, release the locking screw and adjust the lung governed demand valve with the adjusting nut. If adjustment fails, Contact an authorized service center to repair or replace the damaged assembly. Replace the control spring in the overflow valve. Remove HP-I particles, rinse and dry the valve, rubber pad, shaped ring and bottom. Dismantle the excess valve, rinse with a jet of water, and then dry the non-return valve and the place of contact of this valve with the membrane. Insufficient oxygen supply bypass. Insufficient capacity of the bypass valve. Contact an authorized service center to repair or replace the damaged unit. 55

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Which of us, being a schoolboy, thought about how important it is to learn the rules of the Russian language? Sometimes such a simple childhood oversight as unlearned lessons can play a cruel joke in adult life. Yes, it's the computer age, and Word points out mistakes, so you don't have to worry about grammar. But we still fill out a lot of documents by hand, we write a lot of statements in the old fashioned way with a pen on paper, and it is simply unacceptable for an educated person to make childish mistakes in the text.

Quite often, the spelling with a fluent vowel causes difficulties. This linguistic concept is introduced to children in the fifth grade, but after graduation, few can remember the rules for writing words that fall under this category. In this article, you can find information about the origin of these vowels, their spelling and verification methods.

Definition of the term

What are fluent vowels and why are they called that? Fugitive - because it either drops out when the word changes, or appears where it was not there before. If to speak linguistic language- vowels alternate with zero sound during formation and formation of new words.

For example: sleep - sleep, oak - oak, nut - nut.

With zero sound, -o- and -e- alternate. A fluent vowel can appear and disappear in the prefix, root, and suffix of a word.

Spelling Meaning

Where did runaway vowels come from? What are reduced vowels, not everyone knows today. But in the Old Russian language, instead of part of the letters familiar today, the so-called ultra-short vowels were used in writing: b - "er", which was read as "O" and b - "er", which was read as "E". Therefore, with their strong position, they were transformed into vowels -o- and -e-, and with a weak position they disappeared.

For example: father - father; father - father.

IN modern language in spoken language, fluent vowels are used to facilitate the pronunciation of consonant clusters. That is why in some word forms and in words, when the case changes, the sound either appears or disappears. For writing There are several spelling rules that you need to remember in order to avoid mistakes.

Basic forms with fluent vowels

Before learning the rules, you should determine in what forms of words this spelling is hidden. There are fluent vowels in words related to nouns, adjectives and verbs.

It occurs in three forms without an ending:

nouns used in the masculine form of the II declension, in singular nominative case with suffix - ok.

For example: bag - bag, hammer - hammer.

nouns used in the plural in the I declension and in the neuter gender of the II declension in the genitive case, as well as some forms that have only plural with suffixes -ёr, -ok, -ets.

For example: sister - sisters, day - day, ring - rings.

short form quality adjectives, used in the singular masculine and possessive adjectives male in the form of the nominative case in the singular with the endings - en, -y, -achiy, -yachiy.

For example: sad - sad - sad, doggy - doggy - doggy.

Fluent vowels can appear both in a separate form of a word and in its related derivatives. In addition, they can act as drums and unstressed sounds. As a rule, sounds -о-, -е-, -ё- appear in the stressed position, -i- is extremely rare. It is important to remember here that before the letter "y" in the stressed position, -e- is used, which is heard during pronunciation.

For example: family - family - families - family, sparrow - sparrow.

Given the difficulty of identifying a runaway vowel in a word, spelling can be difficult. To check most cases of this spelling, two basic rules can be distinguished. The first rule applies to the spelling of adjectives and nouns, the second to verbs.

Knowing what fluent vowels are and remembering simple tricks for checking them, you can avoid gross mistakes in writing.

Rule One

This verification method applies to the spelling of nouns and adjectives. Here it is important to pay attention to the neighborhood. Namely, which consonants are next to the fluent vowels.

If these are solid paired consonants, then the letter “o” should be written.
When these are hissing, soft paired consonants, as well as -ts-, then the place for the letter -e- in the word.
In the case of the neighborhood of paired soft hissing before -y-, the letter -i- should be used.

Rule Two

How to write verbs with this vowel? In fact, everything is quite simple: if in a word after the root there is a suffix -a-, - the letter -and- is written in the root. If this suffix is not present, then the letter -e-.

List of exclusions

There are words that do not fall under the rules, they just need to be remembered in order to use them correctly.

Instead of the expected -e-, the letter -i- can be used: hare - hare.
The expected -e- can be replaced by -and-: worthy - worthy, dignity.
The letter -e- instead of -and-: judge - judges, gun - guns, hive - hive, boil - boil.

Knowing what fluent vowels are will definitely come in handy! And it's very easy to learn the rules and rid yourself of mistakes!

Definition of the term

And why were they named that? Fugitive - because it either drops out when the word changes, or appears where it was not there before. Speaking in linguistic terms, vowels alternate with zero sound during the formation and formation of new words.

For example: sleep - sleep, oak - oak, nut - nut.

With zero sound, -o- and -e- alternate. A fluent vowel can appear and disappear in the prefix, root, and suffix of a word.

Spelling Meaning

Where did runaway vowels come from? vowels, today not everyone knows. But in the Old Russian language, instead of part of the letters familiar today, the so-called ultra-short vowels were used in writing: b - "er", which was read as "O" and b - "er", which was read as "E". Therefore, with their strong position, they were transformed into vowels -o- and -e-, and with a weak position they disappeared.

For example: father - father; father - father.

In modern speech, fluent vowels are used in oral speech in order to facilitate the pronunciation of a cluster of consonants. That is why in some word forms and in words, when the case changes, the sound either appears or disappears. For written speech, there are several spelling rules that must be remembered in order to avoid mistakes.

Basic forms with fluent vowels

Before learning the rules, you should determine in what forms of words this spelling is hidden. There are fluent vowels in words related to nouns, adjectives and verbs.

It occurs in three forms without an ending:

nouns used in the masculine form of the II declension, in the singular of the nominative case with a suffix - approx.

For example: bag - bag, hammer - hammer.

nouns used in the plural in the 1st declension and in the neuter gender of the 2nd declension in the genitive case, as well as some forms that have only the plural with the suffixes -ёr, -ok, -ets.

For example: sister - sisters, day - day, ring - rings.

a short form of quality adjectives used in and possessive masculine adjectives in the form of the nominative case in the singular with endings - en, -y, -achiy, -yachiy.

For example: sad - sad - sad, doggy - doggy - doggy.

Fluent vowels can appear both in a separate form of a word and in its related derivatives. In addition, they can act as percussion and unstressed sounds. As a rule, sounds -о-, -е-, -ё- appear in the stressed position, -i- is extremely rare. It is important to remember here that before the letter "y" in the stressed position, -e- is used, which is heard during pronunciation.

For example: family - family - families - family, sparrow - sparrow.

Knowing what fluent vowels are and remembering simple tricks for checking them, you can avoid gross mistakes in writing.

Rule One

This verification method applies to the spelling of nouns and adjectives. Here it is important to pay attention to the neighborhood. Namely, which consonants are next to the fluent vowels.

If these are solid paired consonants, then the letter “o” should be written.
When these are hissing, soft paired consonants, as well as -ts-, then the place for the letter -e- in the word.
In the case of the neighborhood of paired soft hissing before -y-, the letter -i- should be used.

Rule Two

List of exclusions

There are words that do not fall under the rules, they just need to be remembered in order to use them correctly.

Instead of the expected -e-, the letter -i- can be used: hare - hare.
The expected -e- can be replaced by -and-: worthy - worthy, dignity.
The letter -e- instead of -and-: judge - judges, gun - guns, hive - hive, boil - boil.

Knowing what fluent vowels are will definitely come in handy! And it's very easy to learn the rules and rid yourself of mistakes!

Isolation respirators

Respirator insulating regenerative R-30 and R-34 "Lugansk"

Respirator insulating regenerative R-30 and R-34 "Lugansk" It is designed to protect the human respiratory organs from the harmful effects of an atmosphere unsuitable for breathing, when performing mine rescue and technical work in coal mines and quarries.

The respirator provides reliable isolation of the human respiratory organs in an atmosphere containing, individually or in combination, the following gases: CO - up to 10%, SO2 - up to 2%, H2S - up to 1%, NO2 - up to 1%, CO2 - up to 40%, CH4 - up to 100%, O2 - from 0 to 21%, N2 - up to 100%, as well as coal (rock) dust - up to 10 g/m³. For the conditional equivalent of the maximum concentration of a combination of harmful gases at which work in a respirator is allowed, a CO content of 10% is taken.

The respirator according to the climatic version is designed for operation in air temperature from minus 20 to plus 60°C, relative humidity up to 100% and atm. pressure from 67 to 133 kPa (from 500 to 1000 mm Hg).

Specifications

Protective action time during moderate work, h, not less than 4
The supply of oxygen in the cylinder at a pressure of 20 MPa (200 kgf / cm²), l 400
Mass of HP-I in the regenerative cartridge, kg, not less than 2.0
Weight of the cooling element, kg, not less than 0.75
Oxygen supply to the respirator system, l/min:
- constant 1.3-1.5
- lung-automatic, not less than 70
- emergency valve (bypass), not less than 150-60
Vacuum pressure at which the lung machine opens, Pa (mm water column) 100-300 (10-30)
Overpressure at which the excess valve opens, Pa (mm water column) 100-300 (10-30)
Useful capacity of the breathing bag, l, not less than 4.5
Overall dimensions (without breathing hoses and shoulder straps), mm:
- length 450±5
- width 375±2
- height 165±5
Weight, kg, not more than:
- respirator without facepieces, cooling element and refrigerator cover 11.0
- mouthpiece device with headband 0.16
- respiratory masks 0.63
- cooling element with cooler cover 0.80

The device and operation of the respirator

The airway system of the respirator consists of a connecting box, a saliva-removing pump, an exhalation hose, an exhalation valve, a regenerative cartridge, an excess valve, a breathing bag, a refrigerator with a cooling element - a water ice briquette and a rubber sealed cover, an inhalation valve and an inhalation hose.

The oxygen supply system consists of an oxygen cylinder with a shut-off valve, to which an oxygen distribution unit is attached, consisting of a shut-off pressure gauge valve, an emergency valve (bypass), a reducer with a safety valve and a lung machine. The pressure gauge is connected to the block with a flexible capillary tube.

The respirator works as follows. The air exhaled by a person, containing about 4% carbon dioxide, through the front part, junction box, exhalation hose, exhalation valve, regenerative cartridge enters the breathing bag. Passing through a regenerative cartridge equipped with a chemical lime absorber (KhP-I), the air is cleaned of carbon dioxide, heated and humidified. When inhaling, air from the breathing bag through the refrigerator, inhalation valve, inhalation hose0, junction box and facepiece enters the lungs of a person. The movement of air during breathing, thanks to the breathing valves, is always carried out in the same direction along vicious circle. When exhaling, the exhalation valve opens; when inhaling, the inhalation valve opens.

When operating at normal ambient temperature (up to 26 ° C), the cooling element is not placed in the refrigerator, the lid is not put on the neck of the refrigerator and stored in a thermos. The air inhaled from the breathing bag, passing through the refrigerator and the inhalation hose, is cooled as a result of heat transfer to the atmosphere through the walls of these units. When operating at elevated ambient temperatures, a cooling element is placed in the internal cavity of the refrigerator, which provides more intensive cooling of the inhaled air.

The air in the respirator system is enriched with oxygen entering the refrigerator and breathing bag from the oxygen cylinder through the valve and devices of the oxygen distribution unit: reducer, lung machine and bypass. To automatically provide oxygen to a person when performing work of varying severity and to prevent the accumulation of nitrogen in the respirator system, a combined oxygen supply is used: a constant supply of 1.3-1.5 l/min (through a reducer into the metering hole) and periodic - through a lung machine, powered by a gearbox. A constant supply of oxygen is sufficient for a person doing moderate work; during heavier work, oxygen is additionally supplied to the system through the lung machine in short pulses at the end of breaths. In addition, there is a third channel in the respirator for supplying oxygen to the system - bypassing the gearbox through an emergency valve, which opens when a button is pressed. This method of supply is used in case of failure of the gearbox or lung machine, as well as if it is necessary to manually purge the respirator system with oxygen.

Excess air formed in the respirator due to some excess of oxygen supply to the system over its consumption by a person is removed into the atmosphere through an excess membrane-type valve that opens at the end of exhalation.

The saliva pump is used to remove accumulated saliva flowing from the mouthpiece, as well as condensate and sweat from the breathing mask, from the junction box. The pump is activated by pressing a rubber bulb with your fingers.

The pressure of oxygen in the cylinder while working in a respirator, and hence the remaining supply of oxygen, is controlled by a pressure gauge. In case of damage to the capillary tube connecting the pressure gauge to the oxygen distribution unit, or loss of tightness, the pressure gauge can be disconnected from the unit using a shut-off valve.

The respirator in the working position is placed on the back of the person. The main components of the air and oxygen supply systems of the respirator are located in a hard duralumin backpack. Installation of knots in the knapsack is carried out from the side facing the person's back.

The respirator pack is divided into three compartments formed by a duralumin frame riveted to the pack body and increasing its rigidity. In the upper compartment there is a regenerative cartridge with an excess valve and a refrigerator; in the middle compartment - a breathing bag and an oxygen distribution unit; in the lower compartment - an oxygen cylinder with a shut-off valve, attached to the unit with a union nut. In the same zone there is a bypass button and a shut-off pressure gauge valve. Outside the knapsack are: a manometer with a capillary tube leading to it, breathing hoses with a connecting box and a front part (mouthpiece device or breathing mask) attached to the box with a screw.

The lower and middle compartments of the knapsack are closed with a duralumin shield, which has ventilation holes and is held on the knapsack by two hooks and two spring latches. On the shield there is a waist shock absorber, a waist belt and brackets for attaching the suspension system. A shock absorber (oval-shaped pillow) is pivotally connected to the shield, resting with its metal base against the upper edge of the satchel. The upper compartment of the backpack, in which the respirator units (regenerative cartridge and refrigerator) that heat up during operation, are well ventilated from the side of the person's back, which ensures good heat removal from these units.

The suspension system of the respirator consists of two leather shoulder straps with shock-absorbing pads, two end straps made of braid with tension rings at the ends and self-tightening rings for fixing the straps after adjusting to a person's height. The upper ends of the shoulder straps are attached to the base of the shock absorber, and the carriage put on them is attached to the upper part of the respirator body with a spring latch. The outer end of the capillary tube with a pressure gauge is attached to the right end strap, and a signal whistle is attached to the left end strap. On the shoulder straps, four holes with a diameter of 6 mm are made for a rough adjustment of the straps for height and the location of the pressure gauge in the field of view of the respirator.

Upon receipt of a new respirator, it is necessary to adjust the length of its shoulder straps in accordance with growth, for which the upper ends of the straps are attached with nuts to the base of the shock absorber, choosing one of the four holes at the desired length of the strap. In this case, the pressure gauge fastening buckle, located on the right end strap, should be located in a convenient place, the pressure gauge scale should be in sight, and the capillary tube should not be strongly bent.

The position of the respirator on the back is adjusted by the end straps (by tightening or releasing them). The position of the belts is fixed by self-tightening rings.

The respirator uses a headband with a mouthpiece fastened at two points. It is necessary to adjust the length of the four headband straps in accordance with the size and shape of the head, which allows you to securely fix the mouthpiece in your mouth. When switching off from the respirator and subsequent switching on, this adjustment should not be violated; to put on and take off the headband, it is enough to use the hooks located on both straps.

The order of inclusion in the respirator and work in it

Before descending into the mine and before being included in the respirator, it is necessary to conduct a cursory check of it to determine the operability of the main components, for which check:

tightness of a respirator with a mouthpiece or with a mask,
serviceability of the lung machine,
bypass serviceability,
serviceability of the excess valve,
supply of oxygen;
serviceability of the signal whistle.

To check the tightness of the respirator, suck the air out of the respirator system as far as possible. If further suction is impossible when holding the breath for 3-8 seconds, then the respirator is airtight.

To check the tightness of the respirator with a mask, put on the mask and, without opening the cylinder valve, pinch the exhalation hose with your hand, pull the edge of the mask to exhale. Release the edge of the mask, inhale and exhale again into the atmosphere. With the next breath, a stable vacuum pressure should form under the mask.

Open the cylinder valve and take a deep breath. A free breath and the characteristic noise of the lung machine testify to its serviceability.

To check the operation of the lung machine, exhale into the respirator system, open the cylinder valve and take one or two deep breaths. The absence of inhalation resistance and a sharp hissing sound of oxygen entering the breathing bag indicate that the lung machine is in good working order.

To check the bypass operation, press its button. At the same time, the breathing bag should quickly fill with oxygen, a sharp hissing sound and oxygen back-up at the mouthpiece indicate that the emergency valve is working.

To check the operation of the excess valve, inhale through the nose and, by exhaling, fill the breathing bag with air until the excess valve opens. A good overflow valve should open without causing significant breathing resistance.

To check the oxygen supply with the cylinder valve open, use the pressure gauge to check the pressure, which should be equal to the working pressure - 200 kgf / cm² (20 MPa ± 1 MPa). To check the signal whistle, sharply press its membrane.

Before entering a gassed environment, turn on a respirator. Switch on in the following order. Take off the helmet and hold it between your knees, straighten the headband, put it on your head, taking the mouthpiece in your mouth. Simultaneously right hand open the cylinder valve to failure, turn the valve handwheel in the opposite direction by half a turn. Take a few breaths from the respirator system until the lung machine operates. Put on the nose clip, fasten the metal hooks of the headband to the rings of the junction box and put on the helmet. In a smoky atmosphere, wear smoke goggles.

Compressed oxygen respirators ANY-6, ADY-6 type R-30, R-30M

Respirators isolating regenerative on compressed oxygen ANY-6, ADY-6 used for respiratory and eye protection when staying in a polluted environment - gassed, smoky, dusty, for emergency, rescue, mining and various industrial works, requiring additional protection up to 4 hours

These respirators are a complete analogue of R-30, R-30M respirators, which are produced according to specifications 12. 43. 73 -81 transferred by China to the USSR in the 80s as part of the exchange of technologies. All parts of ANY-6, ADY-6 respirators are completely interchangeable with R-30 and R-30M respirators. The use of these respirators is permitted at hazardous production facilities in the Russian Federation.

ANY-6, ADY-6 respirators have a number of innovations:

the body of the device is covered with a protective lacquer coating (delivery of devices without lacquer coating is possible);
The design of the monoblock has been modernized; a modern pressure gauge is used, etc.

Specifications

Parameter name	Index
guaranteed time of protective action during moderate work, hour	4
oxygen supply to the respirator system, constant l/min	1.4±0.1
lung-automatic supply at oxygen pressure in the cylinder from 20 to 2 MPa, l/min	100
emergency (manual) supply at an oxygen pressure in the cylinder of 18-20 MPa, not less than, l/min	150
emergency (manual) supply at an oxygen pressure in the cylinder of 3-5 MPa, l/min	60
pressure at which the safety valve operates, MPa	0,8-1,2
pressure at which the excess valve operates, Pa	100-300
maximum allowable pressure in cylinders, MPa	20±1
oxygen supply (at a cylinder pressure of 20 MPa), not less than, l	400
overall dimensions (length-width-height), mm	*455375165*
respirator weight (without oxygen, absorber, cooling element and refrigerator cover), kg, no more	8,5

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