OPERATING PROCEDURES (Continued)
The AAFARS suction and recirculation hoses are connected to the fuel drums via elbow
valves with integral camlock couplers. When the elbow valve coupling is closed, the valve
stem is extended; when open, it is retracted. The stem travel is opposite that of conventional
valves and requires the operator to double check valve position during system set up and
tear down, since observation can be misleading. Failure to heed this warning could result in
death or serious injury.
Close the fuel drum inlet elbow valve couplings (6) on the remaining drums (7).
Turn on auxiliary pump (1).
After each hose is defueled and unisex coupling is closed, do not reopen the unisex coupling until
after defueling is completed. This will prevent introducing air into the system.
One at a time, open unisex valves (8) on discharge hoses at fueling points. Close unisex valve (8) as hose collapses.
At recirculation manifold (figure 10, 16) close unisex valve to refueling points to isolate discharge hoses.
Turn off auxiliary pump (figure 11, 1).
Disconnect inlet elbow valve (3) from fuel drum (2).
Disconnect discharge hose (4) from auxiliary pump (1).
m. Hold auxiliary pump (1) over container. Open unisex coupling valve (5) and drain fuel. Close unisex coupling valve
Hold auxiliary pump (1) over container and disconnect auxiliary pump (1) from inlet elbow valve (3).
Disconnect auxiliary pump power cable from auxiliary pump module (1) and stow cable in accessory module.
Install elbow valve coupler (3) on fuel drum (2) and open elbow valve coupler (3).
Open elbow valve couplers (6) on remaining fuel drums (7).
Start system and recirculate for 10-15 minutes.
Install all nozzles at fueling points and open unisex couplings at nozzle.
At the recirculation manifold, open unisex coupling to refueling points.
Commence normal operation.