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

[. . . ] 6 PREVENTIVE MAINTENANCE CHECKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PERIODIC INSPECTION REQUIREMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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. (Figure 4) d. e. 5. Performance Testing a. 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. No light leakage is allowed in the IR mode. 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. This rate should be 50 ± 10 flashes. It is not necessary to directly observe the light flashes during this evaluation. This inspection should be performed in a dark room or enclosure. 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. This test may be accomplished MANUALLY or 4 Y1-03-0146 Rev. D AUTOMATICALLY by using the TS-23/A Strobe Light Tester. 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. [. . . ] Check both the main body and flashguard shield cases for cracks or excessive abrasions. Check for full and free operations of both the IR and Blue light filters. Check that the IR and Blue filters are not cracked and discolored. Check that the light switch moves up and down freely. Check that the battery wells are free of dust and are clean. BA-3058/U Battery (or equivalent) 1. 5V, AA, Alkaline. [. . . ]