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                            About Cobham Life Support, ACR Products    Cobham Life Support, ACR Products www.acrelectronics.com, designs  and manufactures a complete line of safety and survival products  including EPIRBs, PLBs, AIS, SARTs, Strobe Lights, Life Jacket Lights,  Search Lights and safety accessories. The quality systems of this facility  have been registered by UL to the ISO 9001:2000 Series Standards.  Recognized as the world leader in safety and survival technologies,  ACR has provided safety equipment to
                    
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                                Table of Contents    SECTION ONE- GENERAL _______________________________ 3  SECTION TWO- OPERATING INSTRUCTIONS _______________ 5  SECTION THREE- TESTING AND MAINTENANCE ___________ 7  APPENDIX A – WARRANTY, USEFUL LIFE POLICY, NOTICES 11     PLEASE READ ALL WARNINGS, CAUTIONS  AND NOTES CAREFULLY  Y1-03-0146E 2                                                                                                                                                                                  
                    
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                            SECTION ONE- GENERAL  This publication provides maintenance and operating instructions for the  MS-2000(M) Distress Marker Light.    1. Purpose  The light is designed and intended to provide aircrew and other  personnel with a high-intensity visual distress marker signal for use in  the event of unscheduled abandonment of aircraft in isolated regions  and other emergency and/or special operational mission situations.    2. General Characteristics  . The MS-2000(M) Distress Marker Light is a 
                    
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                            3. Theory of Operation  All electrical circuitry comprising the MS-2000(M) strobe light is  enclosed within its main body case assembly.  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.         IR filter (in     storage position),     ACR P/N 4459      Blue filter (in     storage position),     not visible when Flashguard,     store
                    
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                              SECTION TWO- OPERATING INSTRUCTIONS  a. Turn "ON"  Slide switch up until it stops.  The strobe should begin flashing  within a few seconds.    b. Turn "OFF"  Slide switch down until it stops.  The unit will stop operating.    c. White Light  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.  (See Figure 2)      Stored  Lift      Rotate       White      Figure 2    d. IR Light
                    
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                          IR light  Stored  Turn On      Figure 3      e. Blue Light  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  
                    
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                            SECTION THREE- TESTING AND MAINTENANCE    1.     Light Leakage Test  With the IR filter in its operation position (See Figure 3), turn the switch  ON and observe that no light is transmitted through the sides of the  case or the flashguard shield.  Turn switch OFF. 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 accord
                    
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                          pressing the trap door down to turn the TS-23 "ON", or by removing the  flashguard shield and inserting it into the tester.  This is accomplished  by separating the main body of the light from its flashguard shield.  This  separation is performed by holding the main body of the light with one  hand while grasping the flashguard shield with the other and pulling in  opposite directions.      After separation, insert the top of the light into the trap door on the top of  the TS-23/A, insuring th
                    
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                          Battery preventive maintenance visual checks will be performed during  initial and periodic inspections of the light.    4. Preventive Maintenance Checks    WARNING:  Do not perform preventive maintenance in a  flammable atmosphere or near an open flame.    a.  MS-2000(M) Distress Marker Light  (1)  Check that the xenon flash tube lens is not cracked or discolored.  (2)  Check both the main body and flashguard shield cases for cracks or  excessive abrasions.  (3)  Check for full and free opera
                    
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                          7. Replacement Parts List (See Figure 1 for additional details)  a. Flashguard shield assembly, ACR P/N 4463  b. Battery door assembly, ACR P/N 9338  c. IR Filter, ACR P/N 4459    Item a. comes complete with blue filter, IR filter and labels.  Item b. comes complete with retention cable, battery cover screw, door  and o-ring.    8. Parts Replacement Procedures  a.  To replace flashguard  Remove the old flashguard by grasping the flashguard with one hand  and the light body and lanyard in the o
                    
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                            APPENDIX A – WARRANTY, USEFUL LIFE POLICY,  NOTICES  LIMITED WARRANTY  This product is warranted against factory defects in material and workmanship for a  period of 1 (one) year* from date of purchase or receipt as a gift. During the warranty  period ACR Electronics, Inc. will repair or, at its option, replace the unit at no cost to  you for labor, materials and return transportation from ACR. For further assistance,  please contact our Technical Service Department at ACR Electronics, Inc.,