technical manual operator instructions
technical manual operator instructions
technical manual operator instructions
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Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR MASK,<br />
CHEMICAL-BIOLOGICAL: M45 (con’t)<br />
ITEM<br />
NO.<br />
INTERVAL LOCATION PROCEDURE NOT FULLY MISSION<br />
CAPABLE IF:<br />
ITEM TO<br />
CHECK/<br />
SERVICE<br />
11 After Inlet Valve<br />
Assembly<br />
a. Fold back left side of<br />
nosecup to fully expose<br />
inlet valve assembly.<br />
Check that inlet valve<br />
disk (1) is present and<br />
properly positioned on<br />
the cage and post<br />
assembly (2).<br />
Inlet valve disk is<br />
missing or not<br />
positioned on the cage<br />
and post assembly.<br />
b. Check inlet valve<br />
disk (1) for tears, curls or<br />
cleanliness. Make sure<br />
inlet valve disk lies flat.<br />
Inlet valve disk has<br />
tears, curls, or does not<br />
seat against inlet valve<br />
gasket.<br />
2-30
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