TM 10-6640-233-10 Table 2-12. Operator Preventive Maintenance Checks and Services (cont.) B - Before A - After M - Monthly D - During W - Weekly B D A W M d.   Check ground cable is Grounding connec- properly connected to tions are damaged. ground lug and grounding rod. 4 Electric/ Inspect for condition and Damaged door Telephone security. assembly. Damaged Access Panel or missing telephone connection and/or power outlet. 5 Fume Chamber a.   Inspect for condition and Damaged door Vent Exhaust and security. assembly, missing Spectrometer rivets. Hot Gas Vent b.   Inspect access door for Latches, keepers, defective or missing seals, or hinges dam- latches, keepers, seals, and aged or missing. hinges. * c.   Inspect gasket for condi- Defective gasket. tion and security. 6 Power Cable Inspect cable for damaged Cable damaged. connector, cuts, and deep abrasions. 7 Purge Intake a.   Inspect access doors for Latches, keepers, Doors defective or missing seals, or hinges dam- latches, keepers, seals, and aged or missing. hinges. b.   Inspect door micro- Microswitches do not switches to be sure they operate properly. activate properly when door is closed, and deacti- vate when door is opened. c.   Inspect gasket for condi- Defective gasket. tion and security. d.   Inspect motor for opera- Motor does not oper- tion. ate. e.   Inspect filters for obstruc- Clogged, dirty, or tions and security. defective filter. INTERVAL ITEM NO. ITEM TO BE INSPECTED Equipment is Not Ready/ Available Procedures Check for and have repaired or adjusted as necessary. 2-19