technical manual operator instructions

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SECTION II. EQUIPMENT DESCRIPTION AND DATA (CONT) 1.11 EQUIPMENT DATA. Weight (with carrier) 4.29 lbs (1.92 kg) Dimensions (in carrier) 12 x 11.5 x 5 in (30.5 x 29.2 x 12.7cm) SECTION III. THEORY OF OPERATION 1.12 PROTECTION. The M45 protects the head, neck, face, and respiratory tract of the soldier from chemical and biological agents and other particles. Protection is provided by the agent resistant facepiece, second skin, and hood. Although all three components protect the soldier against CB agents in gaseous form, the second skin and hood provide increased liquid agent protection. The facepiece protects the respiratory system of the soldier by filtering contaminated air while maintaining an airtight seal against the face. All outside air is forced to enter the canister, which filters chemical and biological agents before entering the facepiece. The facepiece maintains a facial seal using a system of valves which open and close during inhalation and exhalation. 1-13
SECTION III. THEORY OF OPERATION (CONT) 1.12.1 Inhalation. As a soldier inhales, a facial seal is maintained by the outlet valve closing on the outlet valve housing. The vacuum causes outside air to pass through the canister, which filters the contaminated air. Filtered air then travels through the hose and past the inlet valve disk into the faceblank eye cavity. Once in the eye cavity, the filtered air flows over the inside of the eyelenses to reduce fogging and past the nosecup valves into the nosecup. Some air may enter the nosecup by flowing between the nosecup and the nose/chin area, but most will enter through the nosecup valve disks. Once the filtered air enters the nosecup, the air enters the soldier's respiratory system. Figure 2. Inhalation 1-14
Page 1 and 2: TM 3-4240-341-10 TECHNICAL MANUAL O
Page 3 and 4: WARNING SUMMARY This publication de
Page 5 and 6: WARNING SUMMARY (CONT) o You must c
Page 7 and 8: EXPLANATION OF SINGLE HAZARD SYMBOL
Page 9 and 10: HEALTH/ENVIRONMENTAL HAZARD Filter
Page 11 and 12: TABLE OF CONTENTS (CONT) APPENDIX A
Page 13 and 14: Fig 1. Mask, Chemical-Biological: M
Page 15 and 16: SECTION I. GENERAL INFORMATION (CON
Page 17 and 18: SECTION I. GENERAL INFORMATION (CON
Page 19 and 20: SECTION II. EQUIPMENT DESCRIPTION A
Page 25: SECTION II. EQUIPMENT DESCRIPTION A
Page 29 and 30: SECTION III. THEORY OF OPERATION (C
Page 31 and 32: 2.1.1 General (CONT). a. Perform PM
Page 33 and 34: 2.1.2 PMCS Procedures (CONT). f. Th
Page 35 and 36: Table 2-1. PREVENTIVE MAINTENANCE C
Page 67 and 68: 2.2 MANDATORY REPLACEMENT PARTS. Th
Page 69 and 70: 2.4 DONNING YOUR MASK (CONT). c. Pu
Page 71 and 72: 2.4 DONNING YOUR MASK (CONT). f. Bl
Page 73 and 74: 2.5 FIT CRITERIA. a. Verify the fit
Page 75 and 76: 2.6 PUTTING YOUR MASK ON IN COLD WE
Page 77 and 78:
2.7.1 CONNECTING THE DRINKING SYSTE
Page 79 and 80:
2.7.1 CONNECTING THE DRINKING SYSTE
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2.8 REMOVING YOUR MASK. a. Disconne
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2.9 STOWING YOUR MASK AND ADDITIONA
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2.9 STOWING YOUR MASK AND ADDITIONA
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2.10 WEARING YOUR MASK CARRIER (CON
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2.12 INSTALLATION OF HOOD. a. Remov
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2.13 WEAR AND LOCATION OF THE CANIS
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No lubrication is required for the
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3.2 CHECKING YOUR MASK FOR LEAKS (C
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3.4 CLEANING (CONT). c. Soak brush
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3.4 CLEANING (CONT). m. Clean outsi
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APPENDIX A REFERENCES A-1. SCOPE. T
Page 103 and 104:
APPENDIX B COMPONENTS OF END ITEM A
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B-3. EXPLANATIONS OF COLUMNS (CONT)
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APPENDIX C ADDITIONAL AUTHORIZATION
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SECTION II. ADDITIONAL AUTHORIZATIO
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D-2. EXPLANATION OF COLUMNS (CONT).
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DID WE GOOF? DO YOU KNOW A BETTER W
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