Cleaning

gasket is evenly seated in the filter holder when you put in the new cartridge.

9-7. Prefilter Replacement. Replace the prefilter when breathing becomes difficult.

Remove the prefilter retaining ring from the front of the cartridge. Put the replacement prefilter in the retainer and

replace the entire assembly on the cartridge front.

9-8. Cleaning. Clean your respirator after each day's use like so:

a. Remove the filters, headbands and valves from the rubber facepiece.

b. Immerse all parts-except the cartridges and prefilters-in a warm (140160 ° ) solution of a germ killer like

calcium hypochlorite, NSN 6860-00-2706225. That's the capsules used in your water purification kit.

c. Scrub the rubber parts of the mask gently, using a soft brush.

d. Rinse thoroughly in clean water and let dry.

e. When dry, reassemble the respirator and store it in a closed plastic bag. Label the plastic bag with your name

and the date it was cleaned.

f. Before using the mask, be sure to check it for leaks

9-9. Storage. Before storing your respirator, make sure it's clean and dry. Store it in a cool, dry area free of airborne

contamination. You can store your respirator in a plastic bag. Do not put it in your locker or tool box unless it is in a

container or carton. Be sure to check the respirator again before using it.