TM-5-5420-279-10
7.3 BACK UP MODE
Operating Procedures
WARNING
CRUSH HAZARD. BEFORE CARRYING OUT TROUBLESHOOTING INVOLVING SV10, A
SUSPENDED OR PART BUILT BRIDGE MUST BE MADE SAFE EITHER BY COMPLETING
THE BUILD OPERATIONS IN BACK-UP MODE OR BY RETRIEVING THE BRIDGE. FAILURE
TO HEED THIS INSTRUCTION COULD CAUSE DEATH OR SEVERE INJURY TO
PERSONNEL.
CRUSH HAZARD. A SUSPENDED BRIDGE WILL MOVE IF SV10 IS MANUALLY OPERATED
AND THE CHEST PACK RIGHT-HAND JOYSTICK IS MOVED FROM THE CENTRAL
POSITION CAUSING ACTIVATION OF OTHER SOLENOID VALVES. FAILURE TO HEED
THIS INSTRUCTION COULD CAUSE DEATH OR SEVERE INJURY TO PERSONNEL.
DEATH OR SEVERE INJURY. WHEN ELECTRICAL POWER IS NOT PRESENT ON THE
LAUNCH VEHICLE, THE EMERGENCY STOP SYSTEM IS INOPERATIVE. EXERCISE
GREAT CARE WHEN OPERATING THE SYSTEM AS THERE IS NO QUICK WAY OF
STOPPING THE OPERATION ONCE IT IS STARTED. ALL PERSONNEL MUST BE AWARE
OF THE POTENTIAL DANGER OF MOVING COMPONENTS AND MODULES.
NOTE
When an item on the vehicle or launcher is referred to as front or rear, left or right, the cab
is taken as the front of the launcher vehicle, all references are taken as if personnel are
looking forward towards the cab. Therefore, if the left hand side A-frame leg is being
discussed, the A-frame leg on the launcher vehicle's left hand side is the item being
described.
7.3.1.1
Open the ball valve mounted on the front face of the left hand stabilizer leg. (See
live. With the ball valves closed the back up mode control valves will not operate.
7.3.1.2
Remove all the access covers from the launch frame guards.
Check that none of the solenoid valves are clipped and held in.
7.3.1.3
7.3.1.4
From the following list select the desired function and clip the mushroom buttons to
the in position accordingly.
NOTE
Unclip the solenoid after completion of the operation.
7.3.1.5
Before the operation of any of the functions, ensure that the correct stage within the
build sequence has been achieved and that all pins etc. are in place or have been
removed as appropriate.
