Operation of the Chest Pack
CHEST PACK E-STOP OPERATION. IF THE CHEST PACK IS FITTED TO THE LAUNCH
VEHICLE WHEN THE FOUR POSITION SWITCH, IN THE VEHICLE CAB, IS SET TO POSITION 2
THE CHEST PACK E-STOP BUTTON IS DISABLED. SHOULD IT THEN BE OPERATED IN AN
EMERGENCY, ELECTRICAL POWER AND THUS HYDRAULIC POWER WILL NOT BE
REMOVED FROM THE LAUNCHER. FAILURE TO HEED THIS INFORMATION COULD LEAD TO
DEATH OR SEVERE INJURY TO PERSONNEL.
Movement through the chest packs menu system is achieved by moving the joystick on
the right-hand side of the chest pack either left or right. Each movement to the left or right
selecting the next function to the left or right of the current selection within the menu.
When MODE SELECT is chosen the MODE SELECT light will flash and movement of the
joystick forward or rearward will move up and down the choice of bank conditions. When
the appropriate bank condition is selected one further movement of the joystick to the right
will select this bank condition and the MODE SELECT light will stop flashing.
Once a function has been selected movement of the joystick forward or rearward will
cause a motion to occur dependent on the current function selected. In general,
movement of the joystick forward causes an outwards or upward movement with
movement of the joystick rearward causing a downward or inwards movement.
The joystick is proportional; therefore, an increase in the speed of operation of a function
is increased the further the joystick is moved from its center position.
The following are the indications and their associated function displayed on the chest
FAULT: When continuously illuminated this indicates that a malfunction has occurred
within the system. An investigation to identify and rectify the malfunction must be carried
out before continued operation of the chest pack. When flashing, a fault has occurred
which does not stop further use of the system but an investigation to identify and rectify
the malfunction must be carried out at the earliest practicable time.
POWER: When illuminated this indicates the chest pack is switched on and power is
to Figure 3. 10. When illuminated this indicates the function
active. Movement of the joystick forward will raise the end of the beam thus increasing
the beam angle and rearward will lower the end of the beam decreasing the beam angle.
The angle at which the beam is set is dependent upon whether the far bank is higher,
level or lower than the home bank and may also be used to position the rear of the launch
beam at a suitable height for pinning operations.