TM 10-6640-239-13 2-33 Table 2-12.  Operator Preventive Maintenance Checks and Services (PMCS) - CONT NOTE If  equipment  must  be  kept  in  continuous  operation,  only  do  procedures  that  can  be performed without disturbing operation.  Make the complete checks and services when equipment can be shut down. BE – Before AF – After MO - Monthly DU- During WE – Weekly Interval Item No. B E D U A F W E M O Item to Inspect Procedures Not Fully Mission Capable If: 8 b.    Inspect door microswitches. Microswitches do not activate properly when door is closed and deactivate when door is opened. c.    Inspect gasket. Defective gasket. d.    Inspect motor for operation. Motor does not operate. e.    Inspect filters. Clogged, dirty, or defective filter. 9 a.    Inspect access doors for defective or missing latches, and hinges. Door missing. Main Power Panel No. 1 b.    Inspect circuit breakers for damage. Circuit breakers loose or damaged. 10 a.    Inspect access doors. Door missing. Power Panel No. 2 b.    Inspect circuit breakers for damage. Circuit breakers loose or damaged. 11     Emergency Lights Inspect for illumination. Lights do not illuminate. 12 a.    Inspect mounting bolts. Loose or missing mounting bolts. b.    Inspect crankcase oil level. Low oil level. c.    Inspect intake filter. Clogged or dirty filter. d.    Check for rattles, knocks, squeaks, or hums that may indicate trouble in air compressor or motor. Vibration or unusual noise occurs. Air Compressor e.    Inspect motor for indication of overheating and smoke. Motor overheats or emits smoke. 13 Ladder Inspect for presence. Ladder missing. 14 Air Tank and System Piping a.    Inspect mounting bolts. Loose or missing mounting bolts.