TM 55-1930-209-14&P-19 Table 17-4.  Preventive Maintenance Checks and Services for Workboat, Lifesaving, and Firefighting System (Continued) B - Before D - Daily Q -  Quarterly D - During W - Weekly S -  Semiannually A - After M - Monthly A -  Annually INTERVAL ITEM PROCEDURES EQUIPMENT ITEM TO BE CHECK FOR AND HAVE IS NOT READY/ NO. INSPECTED REPAIRED OR ADJUSTED AVAILABLE IF B   D   A   D  W  M   Q   S   A AS NECESSARY 4) Release switch to return system to System does not normal operation. If lights indicate return to normal. trouble, notify bargemaster or shift leader for corrective action. d. Inspect and clean smoke detector for Any deficiencies corrosion, dirt, grime, loose wiring, faulty exist. lamps, or other deficiencies. Correct, repair, and replace worn or damged parts as necessary. e. After verifying smoke detector system is operating normally with all detector mod- ules in place and the suction blower oper- ating normally, conduct the following test: 1) Smoke testing must be carried out by two persons: one to note the results at the detector cabinet and one to introduce smoke into the accumula- tors throughout the vessel. 2) Before commencing the smoke test, make certain the 3-way valves are in the correct position with the handle reading "Smoke Detector." 3) To perform smoke tests, use a smoke test source device. NOTE A smoke test source device can be fabri- cated using specifications suggested in manufacturer's manual or procured through authorized supply, as recommended by the supporting Fire Marshal. 4) It is necessary for the operator of the smoke tester to carry a portable light so that smoke entering the accumula- tor may be observed. 5) The tester must produce smoke con- tinuously for a period of 1 to 4 min- utes, the actual time being dependent on the length of that particular line and the number of installed accumulators connected to it. 17-25