Filter
Top Products
BIL-JAX 3522A
The hydraulic power unit uses a 24 Volt, one
horsepower DC motor to drive the hydraulic pump.
The DC motor is powered by four 6 Volt DC, 245
Amp-hour deep charge batteries connected in
series. A 25 Amp, automatic onboard battery
charger is provided with standard models for
recharging the batteries at the end of each work
period.
Two control panels (Figure 2-2) use pushbutton
switches and hydraulic valves to control the direction
and speed of boom lift and rotation. One set of
operator controls is provided for ground operation
and another set is provided for operation from the
platform. Elevation and rotation controls are
operational only when the outriggers are correctly
extended and the moving boom section is within a
programmed safe operating zone.
Figure 2-2. Boom Lift Control Panel (Ground)
The ground and platform control panels include
CHOKE and START buttons for use with boom models
equipped with an optional DC/gasoline hybrid
generator for continuous duty. Battery condition
indicators show the charge state of the batteries.
When pressed, a
STOP button at each control panel
immediately stops all boom motions. The ground
control panel includes a lighted text window that
displays the present operating status or an existing
error condition. The platform control panel includes a
horn button that sounds an audible alarm when
pressed.
Boom elevation, extension and rotation speeds are
selected from low to high by
SPEED buttons. The lift
and extension cylinders have load-holding valves in
the base of each cylinder in case of a hydraulic hose
failure.
Only one boom motion is permitted at a time and
only as long as the boom is within the safe operating
zone (Figure 2-3). When a selected boom motion
exceeds a safe operating limit, the boom motion
ceases and another boom motion must be selected
within the safe operating zone.
Figure 2-3. Range of Motion
Outrigger load sensing switches and level sensing
interlocks prevent all platform boom operations until
the four outriggers are properly extended, the trailer
is level and the full weight of the boom lift is loaded
onto the outriggers. A boom-raised interlock
prevents outrigger operation until the platform boom
is fully lowered to the stowed position.
Safety devices prevent the boom from retracting
suddenly in the event of a hydraulic hose or system
failure. It is strongly recommended that no one
adjust or tamper with these safety devices. If service
is required, please notify Bil-Jax for instructions.
Each cylinder rod is fully immersed in oil to prevent
rust or corrosion of the cylinders during storage. It is
important that the cylinder rods be kept clean and
undamaged for the protection of the cylinder head
packings.
In the event of power loss, control system failure or
other malfunction, all boom movement functions may
be accomplished by manual operations.
Manual lowering of the platform is performed by
actuating valve plungers found on the base of each
boom lift cylinder. Pushing and holding each valve
retracts the corresponding boom lift cylinder. The
boom may need to be rotated to a clear area before
lowering.
Manual boom retraction and turntable rotation are
accessed inside the pump compartment. The hand
pump and selected valves on the hydraulic pump
unit are used for these functions.
10