TM 10-6640-239-13 4-5 Table 4-1.  Unit Preventive Maintenance Checks and Services (PMCS) Q - Quarterly     S - Semi-Annually     A - Annually     B-Bi-Annually NOTE If  equipment  must  be  kept  in  continuous  operation,  inspect  and  service  those items  that  can  be  inspected  and  serviced  without  disturbing  operation.    Make complete Inspections and services when equipment can be shut down.  Within designated  interval,  these  checks  are  to  be  performed  in  the  order  listed. Perform  operator/crew  PMCS  prior  to  or  in  conjunction  with  unit  PMCS  if: There is a delay between the daily operation of the equipment and the unit or regular operator is not assisting/participating. Item No. Interval Item to Inspect Procedures Not Fully Mission Capable If: Q S A B 1             Mod Lab B Trailer Perform PMCS per TM listed in Appendix A. Fails inspection per TM. 2 a.   Check door panel and gasket for correct assembly and good condition.  Check water hose adapters for correct assembly and good condition. Water hose adapters incorrectly assembled or damaged. Water Supply Box b.   Check directional valve lever for proper operation. Directional valve lever inoperable. 3 a.   Check door panel and gasket for correct assembly and good condition. Door or hinge damaged or missing. b.   Check electrical connector and cover for damage. Electrical connector and cover damaged. c.   Check grounding lug for damage and presence of safety clip. Grounding lug damaged.  Safety clip missing. Power Panel d.   Check 110V, 60Hz service outlet and cover for damage. 110V, 60Hz service outlet and cover damaged. e.   Check phone connector for damage. Phone connector damaged. 4 Gas Cylinder and Propane Locker Vents Check vents and screens for good condition. Vents clogged.  Bent or broken screens. 5 Fume Hood Vent Door Check door panel and gasket for correct assembly and good condition. Any damage that prevents proper venting.