BARRICADE OPERATION
During normal operations the system is put in
the READY condition. (See fig. 3-40.) The power
package, which is located below deck and includes
an accumulator and gravity tank, is to be placed in
a READY condition as follows:
Place accumulator pressure at 1,500 psi.
Fill accumulator and gravity tank liquid to
operating level.
Open or close proper valves.
Place
motor
controller
switch
AUTOMATIC.
Check controls for proper operation.
on
Inspect barricade tensioning pendants for
fraying.
As shown in figure 3-42, after the latch at the
top of the stanchion is released, the deckedge
control valve lever is placed in the Raise position
(No. 1), and the stanchions will raise simultaneously.
Raising operations may be stopped and stanchions
held in any position by placing the deckedge control
valve lever in the Neutral position (No. 2).
To lower the stanchions, place the deckedge
control valve lever in the Lower position (No. 3).
Stanchions will lower simultaneously. Lowering
operations may be stopped and stanchions held in
any position by placing the deckedge control valve
lever in mid-position (No. 2).
The deckedge control valve lever in mid-position
(No. 2) is the standby position. It blocks all valve
ports, and any passage of fluid is stopped when the
Figure 3-42.—Barricade stanchion controls.
3-45
