What does the dry powder extinguisher light look like? How is that normal?
Each extinguisher has its own work pressure, the pressure is too high, too low will affect the use of, and quickly check the fire extinguisher around you, do not let it expire.
And in the yellow area that pressure is too large, you can spray dry powder, but there is the risk of explosion, explosion, so that the state of the fire extinguisher, it is best to get regular fire equipment store, re filling dry powder. Yellow box area is inflatable danger zone factory to fire extinguisher production or maintenance of household to, under normal circumstances, the regular manufacturers will charge in the Green Zone, if the pointer is in the Yellow grid zone said the pressure is too large, there is some risk, but that does not mean there is invalid for use.
The pressure is too low, can not be ejected, expired pointer represents in the Red areas need to be replaced or filling (should to fire equipment store regular re filling powder); normal said in the green area, can be used normally;
