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I. Manual Fire extinguishers flour
Fire extinguishers are often used as symbols jar with ABC-2; ABC-4; ABC-8 or BC-2; BC-4; BC-8.
- The letters A, B, C on average represents extinguishing ability of fire extinguishers for different fires. Specific:
A: Cure fires solids such as wood, cotton, fabrics, yarn ...
B: Cure liquid fires such as gasoline, alcohol, alcohol ...
C: Cure gas fires such as gas (liquefied petroleum gas), ...
- The numbers 2, 4, 8 shown weight loaded powder in the bottle, the unit in kilograms.
1. The feature works
Depending on each type of fire extinguisher to extinguish the fire and solid, liquid and gas fires, electric fires and electrical equipment arise. For example, fire extinguishers ABC notation can be used for fighting fires most of solids, liquids, flammable gases ... Flour fighting non-toxic, non-conductive, highly effective; average manipulated using simple, easy test, used to fighting small fires, new arising.
2. Principle of Fire
When opening the valve (depending on the type of course mean different valve structure, the different opening) dry powder in the bottle is sprayed out by the thrust of compressed air (compressed directly with powder or in separate bottles) through the duct system paste. When injected into the powder fire reaction inhibitory effect fire with fire and isolating oxygen atmosphere, on the other hand prevents burning gas enters the resulting fire was extinguished fires.
3. Usage
For portable:
Transfer points to locations near fire.
Shake the suspension several times if the average powder with powder gases push (MFZ).
Leaded hãm core.
Select the upwind direction original speakers spray fire.
Hold the bottle at a distance of 1.5 m according to type.
Pinch valves to spray fire extinguishing powder.
When gas is weak and most speakers approached through the spray to extinguish the fire completely.
For the average trolley
Speeding car on fire, pull the hose rollers guide the powder, the powder into the original fire nozzle.
Shock safety latch (leaded), pull the valve orifice on perpendicular to the ground.
Hold the nozzle firmly choose the wind and pull the trigger, the powder will be ejected.
Attention:
Read the instructions, carefully grasp the character and effect of each type of bottle to put out the fires layout accordingly.
When spraying must stand at the top of the wind direction (burning out); standing near the door (in the fire).
When spraying must cease spraying ceased.
When extinguishing fires to spray liquid onto the surface covering fire, avoid direct contact spray to prevent them shoot liquid out, the fire bigger.
When spraying, depending on the fire and the amount of gas left in the tank that pushes select the location, the distance stood spray accordingly.
Fire extinguisher used to own need to avoid confusion.
Spray bottle holder in the upright position
4. The inspection and maintenance preservation
For conspicuous place, accessible convenient for fighting.
Place in a dry, well-ventilated, avoiding places with sunshine and strong heat radiation, high temperature is 50 degrees C.
If to have a covered outdoor.
When moving to light. Avoid direct contact with high temperature, vibration equipment.
Must regularly check average prescribed by the manufacturer or at least 3 months / time. If the needle just below the blue bar, the air must be reloaded.
Fire extinguisher after opening the valve, refill necessarily, before loading sealed off parts, remove, clean the powder was contaminated.
If the pressure before removing the pressure must be reduced by pressing the valve slowly to gradually release gas, pressure gauge metal only on O. After hearing the "soy sauce", must immediately stop and check again .
Before each new air intake and after 5 years of use, must be tested cylinders, hydraulic, after reaching a new intensity requirements are allowed to use, at least 30 MPa.
Check air pressure gauge or push through the balance and compared with the original liquid volume.
Check the volume of powder by weight comparison.
Check hose, spray speakers
5) Inspection and maintenance
Fire extinguishers should be checked periodically for up to 30 days, check to make sure fire extinguishers regulations in place, easy to see, easy to use, sealed, and enough substance prescribed. Cylinders are not damaged, corrosion, leaks, checking speaker wire spray, trigger squeeze.
Should remove and inspect the condition inside, reloaded to ensure the quality Average extinguisher always in the best condition for extinguishing fires according to the term efficiency periodically follows:
January 12 times for new bottles.
January 6 for average time spent recharging
Before each new air intake and after 5 years of use, must be tested cylinders, hydraulic, after reaching a new intensity requirements are allowed to use, at least 30 MPa.
II. Fire extinguishers CO2
1. Feature effects of CO2 fire extinguishers
Portable fire extinguishers used to extinguish small fires arise: Fire solids, liquids and high efficiency for electrical equipment fires, fires in a closed room, cellar chamber.
Do not use carbon dioxide to extinguish the coal fire or red hot metal, because: CO is toxic and highly explosive gas.
2. Principle of Fire
When you open the bottle valve, due to the difference in pressure, liquid CO2 to escape out through the speaker system and spray tube diving converted to carbon dioxide snow, cold to - 78,90C. When sprayed on the fire works to dilute CO2 concentration combustion gas mixture, while cooling the fire led to eliminate the fire.
3) Scope of use
Carbon dioxide fire extinguishers are often used to put out the fires of electronics, valuables or food because the spray does not save extinguishing (CO2) in organisms damaging fires should not add things.
Average this type suitable for the fire chamber, room, cellar, private place lee, not effective against fires outside or well-ventilated places because of faster diffusion of CO2 in the air.
Do not use carbon dioxide to extinguish the coal fire or red hot metal
4) Usage
When a fire occurs, the moving average near to fire, shock hitch pin.
Choose the first flame spray towards the speaker as close as possible the original fire.
Squeeze (or twist) spray valve for self-extinguishing gas.
- Attention
Read the instructions, carefully grasp the character and effect of each type of bottle to put out the fires layout accordingly.
When spraying must stand at the top of the wind direction (burning out); standing near the door (in the fire).
When spraying must cease spraying ceased.
When extinguishing fires to spray liquid onto the surface covering fire, avoid direct contact spray to prevent them shoot liquid out, the fire bigger.
When spraying, depending on the fire and the amount of gas left in the tank that pushes select the location, the distance stood spray accordingly.
Fire extinguisher used to own need to avoid confusion.
Spray bottle holder in the upright position.
Do not use the bottle to put out the fires outdoors. If used, the spray must first select h¬uong wind.
Prevent cold burns. D¬uoc just holding on plastic parts, rubber hose and spray speakers.
Before spraying in closed rooms, to tell people the best out of the room, planned to escape after spraying.
5) Things to note when using and storing CO2 average
Do not use CO2 to treat fire with alkali metals, alkaline earth, coke, fertilizer. Because the CO2 injection into the fire will generate a chemical reaction, in response to carbon dioxide production that is both toxic gases had an explosion hazard make the fire grow more complex.
When spraying must hold the wood or plastic parts of speaker spray, avoid holding the metal part and is not to CO2 injection into the air will cause burns.
Do not use average CO2 fire fighting in open places, stronger winds because low efficiency.
When the device is thicker fighting high voltage to go insulated boots and gloves; Fire in closed rooms must take measures to ensure safety for people.
Place the jar in a cool, shady place, easy to find, easy to get, easy to use. Do not let the pots at high temperatures where the 550C easily cause pressure surges resulting explosion If the safety valve does not work.
Regular inspection, maintenance and replacement if damaged parts of the tank: Speakers spray, nozzle, valve. Repair, replace the leaking gas bottle.
Test methods in average CO2: Popular weight method, if the CO2 reduction compared to the average initial amount of CO2 gas leak.
6) Inspection and maintenance
Fire extinguishers should be checked periodically for up to 30 days, check to make sure fire extinguishers regulations in place, easy to see, easy to use, sealed, and enough substance prescribed. Cylinders are not damaged, corrosion, leaks, checking speaker wire spray, trigger squeeze.
Should remove and inspect the condition inside, fully recharged to avoid the lack of air pressure in the bottle to ensure quality fire extinguishers are always in the best condition for extinguishing fires according to the term efficiency periodically six:
January 12 times for new bottles.
January 6 for average time spent recharging
Before each new air intake and after 5 years of use, must be tested cylinders, hydraulic, after reaching a new intensity requirements are allowed to use, at least 30 MPa.
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Email: hkdjsc@gmail.com
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