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RZSMA <br /> September 23, 1993 Working To Restore Nature <br /> BP Facility No. 11191, Stockton, California <br /> 4. Positive Pressure Leak Check: Close opening in the exhalation valve guard by <br /> placing palm of'one hand over face of guard; exhale slowly maintaining slight <br /> positive.pressure. No leakage should be detected between the face seal and <br /> the face. <br /> S. Should any leakage be noted: <br /> a) Adjust ahe headstraps and face piece slightly; recheck for leakage. <br /> b) Check condition of exhalation valve and seat. Check that both inlet <br /> gaskets are present and in proper condition. <br /> C) In the event the face piece cannot be adjusted so there is no leakage, <br /> DO NOT ENTER THE AREA REQUIRING PROTECTION. Due <br /> to your particular facial features, a different style or size face piece <br /> may be required to obtain a proper facial fit. <br /> Note: Failure to perform a qualitative fit test of the respirator each time the <br /> respirator is donned may result in little or no respiratory protection. <br /> Inspection, Cleaning, and Storage <br /> The respirator should be inspected, cleaned, and properly stored after use each day. The <br /> following steps are the basic elements of each procedure: <br /> A. Inspection <br /> 1. Examine face seal for rips, tears, holes, deformation, or stiffness. <br /> 2_ Examine face piece plastic center shell for cracks, missing components, or <br /> damaged threads. <br /> 3. Examine harness for breaks, cuts, frays, tears, and missing or damaged <br /> hardware. <br /> 4. Examine inhalation and exhalation valves and valve seats for cuts, cracks, or <br /> foreign matter which may not allow the valve to close completely. Check that <br /> valves are properly installed and are not distorted. <br /> 123013-1 11 <br />