4 Operation
4.1 CONTROL CIRCUIT COMPONENTS
4.1.1 CONTROL BOARD: - Situated under the canopy, the control box contains all of the wiring and relays to
control the machine operation. The control box is common between models with the same power
source, and will contain, where appropriate, discrete fuses for the circuits concerned.
4.1.2 KLAXON: - Mounted under the control board box is a klaxon. It is this device that sounds continuously
if a jack goes light during operation, (i.e. when the booms are raised) warning the operator of this
condition. If the operator attempts to activate the machine by turning the key switch in the basket or the
base control unit to the “ON” position and pushing the green button before the outriggers are deployed,
the klaxon will also sound indicating to the operator that the outriggers are not set-up correctly.
4.1.3 BOOM-SWITCH: - Mounted on the inside of Boom 2 and operated by contact with the upper boom,
this switch controls the changeover function between outriggers and basket. The outrigger control
function on hydraulic machines is not available unless this switch is engaged with the boom, ensuring
that the machine must be stowed to operate the hydraulic outriggers. It is also similarly linked into the
basket control circuit, such that if the switch is not engaged with the booms, (i.e. machine is in
operation) then the outrigger sensors are active and would warn the operator of an unsafe condition,
should one of them loose contact with the ground. These control functions are of primary importance
to safety of the machine and operator. Under no circumstances should this control function be isolated
or by-passed.
4.1.4 BATTERY ISOLATOR: - A grey battery isolator handle is located beneath the canopy which allows the
machine control and power circuits to be isolated from the batteries themselves. Under normal
operation, the machine Key switch should be used to isolate the machine with the Battery Isolator only
being required to disconnect the batteries for maintenance or in the event of a short circuit. The battery
charging circuit is connected directly to the battery side, so charging is un-affected by use of this
switch.
4.1.5 POWER SOURCE SELECTION: - On multiple power option machines, the machine is fitted with an
‘instinctive’ circuit for power source selection. Pressing the green button will automatically select
battery operation. The engine can be started using the two position START/STOP selector in the basket
and the machine will ‘default’ to engine operation via a flow switch in the hydraulic circuit. Stopping the
engine by selecting STOP on the two position selector in the basket and pressing the green button will
return the machine to battery mode.
4.1.6 DIESEL ENGINE: - Generally a Yanmar L40 or Kubota 0C60 engine, described in the maintenance
section of the Workshop Manual, driving a single bodied pump with direct mounted pump dump valve.
4.1.7 GASOLINE ENGINE: - Generally a Honda GX 160 engine, described in the maintenance section of the
Workshop Manual, driving a single body pump with direct mounted pump dump valve.
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