Testing Pressure in a High-Pressure cphere

After-Charging Procedure.

WARNING

(1) Close the high-pressure sphere valve.

See that the locking collar on the

(2) Close the filling line valves (3). Observe

quick-disconnect coupling half is

the pressure indicated on each gage (1). With chalk,

fully retracted and resting against the

mark the pressure on each cylinder.

first wrenching surface. Do not push

(3) Close the valves on the cylinder.

locking collar forward since this will

(4) Open the filling line valves.

release the coupling half from the

(5) Bleed all rubber hoses. Disconnect the

charging fitting.

bleeder valve assemblies from the check valves.

c. Screw the safety plug (3, fig. 13) into the end of

Replace the threaded caps on the check valves (7);

the charging hose assembly.

Attach the quick-

wrenchtighten the caps.

disconnect coupling half (2) that is on the other end of

(6) Disconnect the filling lines from the

the charging hose to the plug on the high-pressure

cylinder adapters (19, fig. 2). Use two wrenches and

sphere valve (2, fig. 10).

take care not to twist or kink the metal hose (4, fig. 8).

d. Open the high-pressure sphere valve.

Support the lines during the operation so that their full

e. Read the gage (1, fig. 13) on the charging hose

weight does not hang on the metal hose.

to determine the pressure in the pressure tank.

(7) Remove cylinder adapters from cylinders.

f. Close the high-pressure sphere valve and

(8) Replace the safety plug assembly (25, fig.

remove the charging hose assembly.

2).

(9) Replace the commercial air cylinder

WARNING

protection cap.

See that the locking collar on the

13.

Testing Pressure in a High-Pressure

quick-disconnect coupling half is

Sphere

fully retracted and resting against the

a. Verify that the high-pressure sphere valve is

first wrenching surface. Do not push

closed.

locking collar forward since this will

b. Disconnect the pressure hose from the plug on

release the coupling half from the

the high-pressure sphere.

charging fitting.

g. Connect the pressure hose to the plug on the

high-pressure sphere valve.

Gage2

Quick-disconnect coupling half

3 Safety plug

Figure 13. Charging hose assembly ready to teat the pressure of ABC-M9-7 or

M9A1-7 flamethrower high-pressure sphere.