What are the methods of use and range of use of dry powder extinguishers?
Use the cart type fire extinguisher, the back toward the fire (should be placed in the outdoor wind direction), take off the gun launched powder tube (can not remember a twist fold phenomenon), lift the intake pressure bar, so that the carbon dioxide enters the tank, when the pressure rose to 0.7 MPa to 1 MPa, down into the pressure rod stop the intake. When the switch is turned on, spray dry powder, and far from near the fire. In case of fighting oil fires, do not let the dry air stream directly impact oil stains, so as not to splash the oil surface and spread the fire.
When using an external portable fire extinguisher, one hand holds the nozzle and the other hand raises the lifting ring, and the dry powder can be ejected
Dry powder fire extinguishers can extinguish general fires, and can also extinguish fires caused by oil, gas, and other fires. Dry powder fire extinguishers are widely used in oil fields, oil depots, refineries, chemical plants, chemical warehouses, ships, airports and industrial and mining enterprises.Dry powder fire extinguishers are divided into portable, knapsack and cart type according to the moving mode of three kinds.
The use of carrying fire extinguishers, should stand at the edge of the flame from 5 meters to 6 meters, right hand clenched powder gun handle (in the case of nitrogen power, only holding the wooden handle, otherwise it may be a low temperature gas, left hand frostbite) switch to "3" position (3, 2, injection order 1), open insurance machine gun at the fire, pull the trigger, the powder can be sprayed out. If a bottle of spray dry powder to extinguish the fire, but will switch to the 2 or 1 position, continuous injection, until now all.
