TM 10-6640-239-13 2-32 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: 4 a.    Inspect for damage. Panel damaged or missing hinge. b.   Inspect power cable connector. Defective connector.  Loose, missing or damaged pins. Power Panel c.    Inspect ground cable for proper connection to ground lug and grounding rod. Grounding connections are damaged.  Safety clip missing. 5 Power Cables Inspect cable for damage. Cable connector or cable has cuts and deep abrasions. 6         Environmental Control Units (ECUs) Inspect bellows. Bellows damaged. Mounts loose or missing. ECUs do not operate. Retaining cable damaged or missing. 7 a.    Inspect access door. Latches, keepers, seals, ball studs, or hinges damaged or missing. 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 operation. Motor does not operate.     Purge Exhaust Doors e.    Inspect filters. Clogged, dirty, or defective filter. 8 Purge Intake Doors a.    Inspect access doors. Latches, keepers, seals, ball studs, or hinges damaged or missing.