... of soft, safe and comfortable. And with the filter cartridge and micro motors, valves, and respiratory ... 3, use and maintenance 3.1 Check the filter box and the surface should be preceded by physical ... use, when feeling unwell, loss of canisters canisters box role, the user should immediately leave the hazardous ... area, replacement of the canisters box. 4.5 The standard battery pack Ni- ...