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Army Chemical Operations

Operation of the M12A1 PDDA

• Operation of the M12A1 PDDA
• US Army Chemical Operations Specialist MOS 54B Skills Levels 1 and 2 Course
• US Army Chemical Operations Specialist MOS 54B Skills Levels 1 and 2 Course cont'd
• Table of Contents
• Table of Contents cont'd
• Introduction
• Lesson 1 Identify Components of the M12A1 PDDA
• Figure 1. Three components of the M12A1 PDDA.
• Control Panel
• Pump
• Figure 2. Pump unit assembly and control panel.
• Figure 3. Drive pulley.
• Figure 4. Discharge hoses and reels.
• Figure 5. Gun assembly and nozzles.
• Figure 6. Location of connector panel and prime-detergent tank
• Describe The Tank Unit Assembly Of The M12A1 PDDA
• Figure 8. Appearance and storage of suction hose and blender hose.
• Figure 9. Hopper-blender assembly
• Figure 10. Foot valve
• Describe The M2 Water Heater
• Figure 11. MT water heater and control panel
• Secondary Components
• Power Cable
• Caution
• Practice Exercise for Lesson 1
• Practice Exercise for Lesson 1 cont'd
• Answer to Practice Exercise
• Describe Procedures for Starting, Operating, and Stopping the M12A1 PDDA Engine and Pump Unit
• Gun Assembly
• Figure 13. Removal of slurry nozzle.
• Hoses
• Figure 15. Checking tension of drive belts.
• Figure 16. Checking generator belt tension
• Piping and Valves
• Air Cleaner Element
• Gasoline Engine
• Figure 19. Locations of engine shroud and air control handle
• Starting the Pump unit Assembly
• Figure 20. Sample DA Form 2404
• Figure 21. Starting procedure instruction plate
• Warnings
• Caution
• Figure 22. Engine checklist.
• Figure 23. Low oil pressure switch/start magneto switch activation
• Stop the M12A1 PDDA Engine and Pump Unit
• Procedures After a Mission
• Cleaning the M12A1 PDDA cont'd
• Procedures for Idle Time
• Figure 24. Cleaning and storage procedures after a spraying mission
• Operate the M12A1 PDDA Under Normal and Unusual Conditions
• Figure 26. Correct gage readings.
• Tank Unit Assembly
• M2 Water Heater
• Cold Weather Operation cont'd
• Operation in Snow and Ice
• Operation in Sand or Dust
• Practice Exercise for Lesson 2
• Practice Exercise for Lesson 2 cont'd
• Answer to Practice Exercise
• Describe the Procedures for Pumping Water and Loading the Tank with Water
• Loading Water From A Natural Water Source
• Figure 28. Hose connections for loading the tank unit from a natural water source.
• Figure 29. Close valve 4.
• Pump Water From A Natural Water Source Without Loading the Tank
• Pump Water From A Natural Water Source Without Loading the Tank cont'd
• Practice Exercise for Lesson 3
• Practice Exercise for Lesson 3 cont'd
• Answers to Practice Exercise
• Describe the Procedures for Heating Water Using the M12A1 PDDA
• Connecting the M2 Water Heater
• Figure 32. Fuel hose assembly
• Connecting the M2 Water Heater cont'd
• Figure 33. Configuration for heating water in the tank unit
• Figure 34. M2 water heater fuels and pressures
• Stopping the M2 Water Heater
• Heat Water From A Natural Water Source
• Connect the M2 Water Heater
• Starting and Stopping Procedures
• Starting and Stopping Procedures cont'd
• Starting and Stopping Procedures cont'd
• Practice Exercise for Lesson 4
• Practice Exercise for Lesson 4 cont'd
• Answer to Practice Exercise
• Describe the Procedures for Loading, Metering, and Dispersing Substances Using the M12A1 PDDA
• Figure 36. Valve 4 control.
• Meter Foam With Water
• Spraying
• Load Decontaminants
• Load. Mix, and Spray Decontaminants Using the M12A1 PDDA
• Mix Decontaminants
• Figure 38. Area coverage by slurry
• Figure 39. Arrangement of the six top shower sections
• Figure 40. Assembling horizontal and vertical supports
• Figure 41. Rotation of horizontal supports
• Figure 42. Personnel shower assembly
• Figure 43. Showering personnel with water from the tank
• Figure 44. Showering personnel with water drawn from a natural water source
• Operation of the Personnel Shower
• Practice Exercise for Lesson 5
• Practice Exercise for Lesson 5 cont'd
• Answer to Practice Exercise
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Operation of the M12A1 PDDA

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