Section III. OPERATION UNDER UNUSUAL CONDITIONS

TM 3-1040-214-12

c. Firing. Fire the disperser as follows:

2-10. Cleaning Operations

(1) Using the right hand, turn the pressure

Immediately after the mission has been completed, the

tank valve handle counterclockwise. Air will be heard

operator of the disperser is responsible for performing

rushing into the agent tanks. When the rush of air stops,

the cleaning operations below.

the disperser is ready for firing.

a. Clothing. The user must clean the contaminated

clothing, including protective mask, protective mask

hood, and rubber gloves. Recommended method is to

WARNING

wash the clothing in warm soapy water, rinse in clear

water, and air-dry.

TM 3-220 contains specific

If the trigger spring breaks during

decontamination information.

firing, push the trigger forward to

b. Personnel. Personnel engaged in operating the

stop the flow of agent. Engage the

disperser will flush their body with cold water for 3 to 4

trigger safety in the safety catch.

minutes followed by a thorough shower using soap and

Turn the pressure tank handle

cold water.

A complete change of clothing is

clockwise to shut off the air supply.

recommended.

(2) Point the gun toward the target. With the

c. Equipment. When a firing mission (para 2-9c)

right hand, depress the trigger safety and squeeze the

has been completed, the residual agent in the disperser

trigger. Agent will be dispersed from the gun nozzle.

should be disposed of as follows:

(1) Carry the disperser to a remote area.

(2) Close the pressure tank valve by turning

NOTE

the valve handle (fig. 2-1) clockwise.

(3) Open the shutoff valve by turning the

If the disperser is fired in a single

handle (fig. 2-1) counterclockwise.

burst, the duration of the firing will be

(4) Dig a deep hole, approximately 1-foot

approximately 19 seconds.

The

deep.

concentration of agent will decrease

(5) Disconnect the hose assemblies (fig. 1-6)

rapidly. If the disperser is fired in

from the pipe and cap assemblies.

short bursts of 5 to 6 seconds, the

(6) Remove the pipe and cap assemblies.

firing time will increase to 30

(7) Dump the residual agent from the agent

seconds.

tanks into the hole ((4) above) and bury the agent.

(3) Release the trigger to stop firing.

(8) Replace the cap and pipe assemblies.

(4) Engage the trigger safety in the safety

Tighten both caps.

catch to prevent accidental firing.

(9) Cross both hoses as shown in figure 1-6

and connect them to the pipe and cap assemblies.

(10) Close the shutoff valve opened in (3)

NOTE

above.

(11) Open the pressure tank valve closed in (2)

Perform the following steps after

above.

firing is completed.

(12) Press and hold the trigger until all air

(5) Turn the pressure tank valve handle

pressure is exhausted.

clockwise to stop the flow of pressurized air to the agent

(13) Return the M3 disperser to organizational

tank.

maintenance

personnel

for

cleaning

and

(6) Move to a remote area. Release the body

decontaminating (para 4-12 through 4-15).

and shoulder straps and lower the disperser to the

ground.

Section III. OPERATION UNDER UNUSUAL CONDITIONS

2-11. Operation in Extreme Cold

2-12. Operation in High Wind

Extremely cold weather will not affect the operation of

A high wind can have considerable effect on the use of

the disperser. However, the hose group and the rubber

the disperser.

To make sure that the agent has

tube (gun group) should be inspected regularly, because

maximum effect, the disperser should always be used

extreme cold causes rubber components to become

upwind of the target and never in a headwind. If

brittle.

operation in a strong crosswind is unavoidable, adjust for

drift of the agent.

2-5