Broderson IC-400-3B, Operation And Maintenance Manual

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2-123
CONTROL VALVE FUNCTIONS
The control valves for the IC-400-B utilize an electronic/ hydraulic system, whereas the
valves are not mounted in the cab.
Boom Function:
Controls for operating boom rotation, boom elevation, boom extension and hoist are
actuated by two, single-axis joysticks with one mounted to each arm rest of the operator
compartment. The joystick handles are electronically connected to the remote-mounted
hydraulic control valves. An arming button (ARM) is located in the RH joystick, or
electronically in the 15-button panel below the main display to serve as the handle interlock
for the control system. The seat switch and the arming button must be active to enable
functionality of the pilot control joysticks. Boom functions will not operate unless the arm
button is engaged before moving the joysticks out of center. Disengaging the ARM button
or releasing the seat switch while the handle is not centered, will result in an abrupt stop.
The placards located at the base of the joystick handles identify the function and direction
resulting from each handle movement.
BOOM ENABLE CONTROLS
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NOTE:
Joysticks may be used together for simultaneous operation, to achieve combinations of movements.
Some controls must be used together. For instance, the boom telescope and the hoist controls must be used
together to maintain clearance between boom and load line hook. Full speed operation of all boom functions is
allowed when the crane is set up on outriggers, leveled to +/-3°, and the RCL is running in the normal mode.
Outriggers:
A 12-button pad is mounted to the left-hand dash panel for controlling the direction of
outriggers on each corner of the machine. There are two function buttons on top (F1 & F2)
to select an operation, based off the task at hand. The two modes of selection include
IN &
OUT,
or
IN & DOWN.
Eight buttons are paired together giving two directions for each
outrigger. Engaging the lower side of the button will deploy the associated outrigger while
engaging the upper side of the button will stow the associated outrigger. All four outrigger
button pairs may be operated simultaneously or individually. Outrigger alarms will sound
when deploying any of the outriggers.
CAUTION
Special attention must be given to avoid hitting personnel or obstacles. Also, in either mode of
operation, make sure to deploy the beams first, then the jacks. On stow operation, make sure Jacks is
selected first.
NOTICE
Avoid holding a joystick lever or outrigger button in the activated position after the function has
reached the end of its travel. This will impose unnecessary stresses on the hydraulic components and
heat the hydraulic system.