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Australia Self Contained Breathing Apparatus

Breathing apparatus can be widely used in fire fighting, petroleum, chemical, metallurgy, electric power, shipbuilding, military, police and other industries, it's an breathing apparatus for people who works in the environments with oxygen deficiency, toxic gas, thick smokes, etc. Set approved by CE EN 137 standard , to ensure you a assured using experience . For Australia market.

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1 Application field 
Positive pressure air breathing apparatus is designed for the use in fire fight application, chemical industry , metallurgy, mines, petrol industry , rescue operation, maintenance works and polluted area wherever there is or may be oxygen content than 17% , or fog caused by fire accident. 
 
2 Product description
positive pressure air breathing apparatus is composed of the following parts: 

① Full Face Mask ② Demand Valve ③ Pressure Reducer and Cylinder Valve 
④ Pressure Gauge and Warning Device ⑤Back Plate Assembly with Harness 
⑥ Medium Pressure Hose ⑦ Compressed Air Cylinder 

 
Air is compressed in the cylinder (pressure of 30 Mpa) . Compressed air is reduced to (0.75±0.15) Mpa through the pressure reducer, and led to medium pressure hose .Then it is reduced n pressure

again through the demand valve and provided to user through full face mask . The outside toxic gas or particles can not get inside because the pressure inside the mask is always higher than the atmospheric pressure .Thus the tightness of the face mask is guaranteed . 

2.1 Full face mask
 

Full face mask is specially designed for European face, ensuring comfort and good seal that provides and efficient tightness. 
A. Round visor, anti-fog and harden treated ; wide vision scope , excellent optical property and good light penetration; 
B. Lame resistant headband,safely fixed; 
C. Flame resistant fixing band,adjustable length; 
D. Insertable structure for demand valve connector,quick connection to demand valve; 
E. Exhalation valve cover,protective for the valve; 
F. Inhalation valve, safe and protectives; 
G. Sealing part , made of high quality flame resistant silicone elastomer; 
H. Nose and mouth cover , made if high quality silicone elastomer ,lower carbon dioxide inhaled into mask; 
I. High effective sound transmitting film; 
J. Flame resistant meshy hood,safe and comfortable. 

2.2 Demand value   
       
The demand valve provides air to the wearer depending on the air breathing need of the wearer . It ensures a higher air pressure inside the facemask thank the outside pressure. The demand valve can be manually switched off because the switcher (C) on the top pf the valve, and then no air is provided to the face mask . The demand valve is automatically switched on at the first inhalation of the wearer. At the central bottom of valve, there is a manual control air supply button (D) to be used to : -Switch on the demand valve manually; -Gave an additional breath of air if the wearer feel supply deficiency; Besides, it can release the remaining air inside the medium pressure hose which is more convenient for test and disassembly of the quick connector .
A.Insertable structure for demand valve connector, safe and convenient;
B.Clipper-built appearance;
C.Manual control switcher,easy to switch on;
D.Manual control air supply button;
E.Medium pressure inhalation hose. 

 2.3 Pressure reducer

The pressure reducer is made of brass with anticorrosive coating . Compressed air is reduced in pressure by the pressure reducer to(0.75± 0.15) MPa .Pressure reducer delivers a constant and
stable pressure during the life time of the cylinder . Pressure reducer is connected to : -Cylinder ; -Medium pressure hose which is connected to demand valve and providing air; -High pressure hose which is connected to pressure gauge. 

2.4 Cylinder value
Cylinder valve locates on the pressure reducer.when medium pressure is over high ,the cylinder valve switches on automatically to release air,and switches off after medium pressure reduces to normal valve. It is regulated in the norm GA124-2004 "fire fighting positive pressure air breathing apparatus" that, opening pressure and fully exhausting pressure of cylinder valve should be within 110% to 179% of maximum designing output pressure of pressure reducer ; and the closing pressure of cylinder valve is no less than maximum designing output pressure .That is : Cylinder valve opening pressure and fully exhausting pressure:(0.99-1.53)MPa Cylinder valve closing pressure: ≥0.09 MPa 

2.5 Pressure guage and warning device
 
The scale of pressure gauge is 0-40MPa.The gauge connects to pressure reducer through high pressure hose.Fluorescent material is used in dial plate ,which enables the pressure value to be read clearly in dark.The watch case takes high anti-impact material ,with rubber protective cover, to be water proof ,shock proof and anti dust.The warning device locates on the high pressure hose near pressure gauge ,which actuates the audible warning when cylinder pressure drops to 5.5+-0.5 MPa. From the beginning of the warning ,the user has to leave the polluted area immediately ,and then plug a new cylinder if needed. 

2.6 Back plate assembly with harness

Back plate assembly includes back plate ,harness ,waist belt ,buckle, pressure reducer holder and cylinder tightening belt, Injected with flame resistant plastic and carbon fiber material ,the back plate is compact, light,,high mechanical resistant ,and anti-impact. It is designed to fit human body's back, notably regarding ergonomics and comfort, All the components of the back plate assembly are fire retardant treated. 

2.7 Medium pressure hose and connector

The medium pressure hose is linked to the pressure reducer and to the demand valve . It is made from flame resistant rubber . The explosion pressure is 4MPa, more than 4 times of maximum output pressure from pressure reducer. 

 

2.8 Cylinder and cylinder value
The cylinder is made from fully wrapped carbon fiber reinforced aluminum lined with 6.8 L capacity,it ensures one hour of moderate activity in real use. 300bar high pressure breathing air stored in carbon fiber cylinder to ensure long time and steady air supply, also meet EN12245 standard .

 

2.9 Carry case for SCBA set

Black molded ,high-density polyethylene cases are ideal for carrying and storing GOLDEN
EAGLE SCBA .cases have a two piece hinge and replaceable latches.it provides excellent
storage for SCBA 30min,45min,60min,90min units.
3 Operating sequence

3.1Cylinder connecting
The assembly can accept one cylinder with maximum capacity for 12 L, or two 6.8L cylinders . For 2 cylinders, there needs to be double cylinder holder and 2 inhalation mouths, and the length of the tightening belt should be increased. A) Cylinder valve is well closed; B) Put the cylinder into the groove of central back plate, and connect firmly the cylinder to
pressure reducer; C) Fasten the belt buckle of cylinder. 

3.2Demand value connecting
Snap the medium pressure demand valve and reducer hoses together. Connector is securely locked . To disconnect apply a slight axial force while sliding back the female connector ring . Don't disconnect when the hose is under pressure .Press button on the demand valve to avoid air leaks when donning the set. 
(before use , the following sequences should be followed to 
avoid danger )
A) Pressure of compressed air in the cylinder; With valve fully opened, the value of pressure gauge is 30MPa, under 30MPa and 20 ℃ . Otherwise , the effective using time will be shortened .
B)Air-tightness of cylinder: It is regulated in the norm GA124-2004 that when open and close the pressure gauge , the pressure drop on the gauge should be no more than 2MPa within one minute. C)Warning system :
-Close the demand valve ; -Open cylinder valve to fill the hose with air,and then close it ; -Open demand valve manual control button, vent the air off slowly with hand palm and observe the value change of pressure gauge; -The warning system star working when the pressure gauge shows(5.5±0.5) MPa. 

3.4 Donning the set
A) Adjusting the backplate Set the shoulder straps at maximum length; don the set and pull down the straps tips until the back plate rests comfortably on the user's back . Fasten waist belt, and pull the free end of belt till the desired tension and comfort. B) Donning the mask Hold the mask by one hand till fully fit with the face , and pull the headband by the other hand to cover the head ; pull the band till full fit and comfort . Plug the demand valve into the mask and inspire . If it is impossible to breathe ad mask fully fits the face ,then the mask is well air-tight . It is necessary to avoid the facial hair between mask and face for fully fit . 

3.5During use 
When in use check from time to time the pressure gauge and plan the work load to suit the air left in the cylinder . With a 6.8L cylinder the breathing apparatus can last for 10 minutes after the warning has started .Then the user must leave the polluted area immediately . 

3.6After use
A) Close the cylinder valve;
B) Disconnect demand valve from the mask,and the excess air will be vented off; C) Unfasten waist belt and slide back the shoulder straps; D) Place the set and cylinder up,on a clean surface. 

4 Maintenance
4.1Cylinder
The cylinder must receive regular check according to related national laws and regulations, and be tested by professional authorized institute and personnel ; records should be taken accordingly . During daily use , the cylinder valve should be checked for leaks and pressure reducer connector for tightness. A) CylinderfillingairhastofollowEN132norm,specification as below: Requirement on humidity : moisture inside cylinder should be no more than 35g/m3 under 30MPa working pressure. B) Cylinder valve has to be ket shut down after end of use for refilling to prevent moisture form getting in . Don't empty air in cylinder and a pressure of at least 0.5MPa, should remain .If the cylinder is empty with air , it has to be dried before charging ; air drier or cylinder kiln can be used , with maximum drying temperature 90℃ . C) Cylinder should be placed up (cylinder valve upwards) during transport and storage . When being carried, the cylinder should be held closely by both hands and it is strictly forbidden to hold the cylinder by handwheel . Cylinder should be protected from impact, rolling, cast and shock .  

Element 

Percentage of weight(dried air) 

Percentage of volume (dried air ) 

Oxygen 

23.01% 

20.93% 

Nitrogen 

75.51% 

78.10% 

Argon 

1.29% 

0.9325% 

Carbon dioxide 

0.04% 

0.03% 

Hydrogen 

0.001% 

0.01% 

Neon 

0.0012% 

0.0018% 

Helium 

0.00007% 

0.0005% 

Krypton 

0.0003% 

0.0001% 

Xenon 

0.00004% 

0.000009% 

 
 4.2 Cleaning and disinfecting
A) Harnessonbackplatecanberemovedforcleaninganddisinfecting; B) During washing , lukewarm water and neutral detergent should be used ; The concentration and duration of use should follow the instruction of the detergent; C) Corruption from detergent to components of breathing apparatus should be avoided: organic solvent will damage rubber or plastic parts. D) After cleaning and disinfecting, all components should be aired under15℃ to 30℃. Any heat radiation source should be avoided like sunshine, drying machine, heater etc. Compressed air is recommended for use for airing of key components like pressure reducer and medium pressure hose, to remove the potential humidity . 

4.3 Test
Test to the breathing apparatus is needed after each cleaning and maintenance. If the film of demand valve or any rubber parts shows damage or aging (being sticky , hardened or crinkled) , it should be changed immediately . Low pressure air-tightness test and demand valve static positive pressure test must be done in
accordance with norm GA124-2004. 

4.4 Storage
Only after cleaning , disinfecting, checking ,maintaining and recording, breathing apparatus can be stored in non-dust , shady and cool place under room temperature, and away from sunshine, heat source,humidity and corrosive substance. Storage temperature has to be within 15℃ to 30℃ and the environment needs to be dry . Besides, breathing apparatus should be kept in cases of good tension resistance. Staffs without special training air forbidden to step in the storage room. After storage and before each use, mask sure that working environment will not damage products property and test to all the components has been done . It is strictly forbidden for the users to disassembly or misuse the equipment.

4.5Transportaion
Breathing apparatus should be kept in the original package or transportation case, and no special requirement is needed, please also follow the storge instruction . 

5 Maintenance, test and record
Requirement on test : Please see the table below 


Activity 

Cleaning 

 

 

 

 

 

Function , tightness 

 

 

/d 

 

Back plate check 

 

 

 

 

 

Cleaning 

 

 

 

 

 

Disinfecting 

 

 

 

 

/c 

 

Membrane check 

 

 

 

 

/c 

 

Membrane replacement 

 

 

 

 

 

/a 

1:Before allowing the use; 2: Before use ; 3: After use ; 4: every 6 months ; 5: Annually ; 6: Every 3 years . 
a) the set been used b) other breathing apparatus c) after use in corrosive areas or in extreme ambient conditions d)in accordance with national regulations . 
Warning : every time the valve is disassembled / assembled from / to the cylinder for maintenance and / or testing , the valve shall be changed . Please refer to the specific information notice that comes with
the cylinder or to be label of composite cylinder . 
After the replacement of any part whatsoever it is mandatory to perform all checks on function and pneumatic tightness. 

6 Common faults and measurement
Waring : the positive air breathing apparatus is essential for user's life , this the staff in charge of maintenance must receive special training from manufacturer and get qualification accordingly . 

 


Faults 

Possible cause 

Measures 

Air leakage at connection points 

Connection un-tight 

Fasten again 

 

Damage of sealing parts 

Replace sealing parts 

No warning under (5.5 

Position change of 

Readjust position for 

 


±0.5) MPa 

warning whistle 

whistle 

 

Whistle blocked or dirty 

Clean the whistle 

Air leakage at soft hose connection 

Damage of O-ring 

Replace O-ring 

Air leakage at safety valve 

Damage of high pressure sealing 

Replace damaged parts 

 

Air leakage of valve 

Replace for now one 

Air leakage at handwheel 

Damage of sealing 

Replace sealing parts 

Close non-tightly or air non-smoothly 

Damage of valve core due to too much pressure 

Replace valve core 

 

Damage of main valve body 

Replace main body 

Air leakage at cylinder neck 

Damage of O-ring 

Replace O-ring 

Air deficiency 

Maybe cylinder valve not fully open 

Send back to manufacturer 

Abnormal air supply or supply while unconnected to mask 

Inner structure fault 

Repair by special trained person