User manual ACR ELECTRONICS MS-2000(M) DISTRESS MARKER LIGHT (MILITARY)

[. . . ] ALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PERIODIC INSPECTION REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PARTS REPLACEMENT PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The strobe should begin flashing within a few seconds. 3 Y1-03-0146 Rev. With the flashguard shield in the retracted (stored) position, slightly raise the IR filter and rotate it either left/right 90°, push filter in to lock into place. With the flashguard shield in the retracted (stored) position, insure that the IR filter is resting on the top (vertical) end of the light over the clear lens, then push filter down to lock into place. With the flashguard shield in the retracted (stored) position, slightly raise the IR filter and rotate it either left/right 90°. Then snap it in toward the side of the light to lock it into position. While 'Holding the main body case with either hand, grasp the flashguard shield with the other hand and pull it up until it stops or a slight locking sound is detected, then release. This is an indication that the Blue filter has been released and fully engaged to its proper operating position. Light Leakage Test With the IR filter in its operation position (Figure 3), turn the switch ON and observe that no light is transmitted through the sides of the case or the flashguard shield. If necessary, replace the flashguard shield assembly and repeat the test. If a new flashguard shield fails to remedy the problem, the light is to be condemned and discarded in accordance with local procedures. A ten minute MANUAL flash rate test is a one-time requirement for all new MS-2000(M) lights received from supply stock. This test is required for initial acceptance of the light and is conducted to insure that the light is capable of sustained operations. Select the White Light function (Figure 2), turn the switch to ON and observe that the strobe lamp flashes. Allow the light to flash for nine (9) minutes, and then manually count the flash rate of the strobe during the final one minute of the test. It is not necessary to directly observe the light flashes during this evaluation. If any light fails to meet the 50 ± 10 flash rate requirements, check the batteries and, if necessary, replace both batteries and repeat the test. Additionally, the battery contacts in the battery well should be checked and, if necessary, cleaned with a small brush. Hold vertical while using brush so that any debris falls out of the light. If battery replacements or cleaning contacts fail to correct the problem, discard the light in accordance with local procedures. Normally this test is accomplished in conjunction with other life support survival kit / vest test requirements and/or as required by specific MAJCOM directives. If the test is to be conducted MANUALLY, follow the test procedures as outlined in paragraph (1) above, except limit the test duration to two (2) minutes. Again, a flash rate of 50 ± 10 flashes per minute is the acceptable test rate. [. . . ] Test equipment for the BA-3058/U battery is commercially available. 7. Theory of Operation All electrical circuitry comprising the MS-2000(M) strobe light is enclosed within its main body case assembly. Briefly, these circuits operate to step up the battery voltage to a level sufficient to fire the xenon flash tube. This stepped-up voltage is so timed that the flash tube will fire between 40-60 flashes per minute. 8. Maintenance Requirement Since all electronic circuitry of the MS-2000(M) strobe is enclosed within its main body case assembly and cannot be disassembled without destroying its integrity, preventive maintenance requirements are limited to initial and periodic flash rate testing and visual inspections. Battery preventive maintenance visual checks will be performed during initial and periodic inspections of the light. 9. Preventive Maintenance Checks DO NOT PERFORM PREVENTIVE MAINTENANCE IN FLAMMABLE ATMOSPHERE OR NEAR OPEN FLAME. a. MS-2000(M)/ Distress Marker Light (1) (2) (3) (4) (5) (6) b. Check that the xenon flash tube lens is not cracked or discolored. [. . . ]