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TrackDrive (TD) Series
Operating & Safety Instructions
4
Operation
4.1
OVERVIEW
4.1.1
CONTROL CIRCUIT COMPONENTS
CONTROL BOARD: - Situated under the canopy, the control board comprises a PCB (printed circuit
board) design which incorporates all of the relays to control the machine operation. The control board
is common between models with the same power source, and will contain, where appropriate, discrete
fuses for the circuits concerned.
KLAXON: - Also mounted on the base is a klaxon, which performs several functions: - Firstly, it can be
used as a manual alert, by pushing the "Horn" button at the platform control position. Secondly, it is
this device which sounds continuously is a jack goes light during operation, with the booms raised,
warning the operator of this condition. It will also sound if the Ground Control Key switch is turned to
"Platform" before the jacks are deployed properly.
BOOM-SWITCH: - Mounted on the side of Boom 2 near the knuckle and operated by contact with a
cam on boom 3, this switch controls the changeover function between jacks and platform. The jack
control function is not available unless this switch is engaged with the boom, ensuring that the
machine must be stowed to operate the hydraulic jacks. It is also similarly linked into the platform
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.
DIESEL ENGINE: - Generally a Kubota 722E engine, described in the maintenance section of the
Workshop Manual, driving a single bodied pump with direct mounted pump dump valve.
CONTROL BOX: - Located adjacent to the Diesel engine, the control box combines all of the functions
for Dual power operation (Bi-energy machines), as well as controlling the Diesel engine. The relays in
this box control Starting, High Throttle, Pump Dump, Duty Selector and Diesel stop timer. There is also
an integral Thermal trip, which protects the Throttle solenoid and other functions.
PETROL ENGINE: - Generally a Honda engine, described in the maintenance section of the Workshop
Manual, driving a triple body pump with direct mounted pump dump valve.
PETROL BOX: - Located adjacent to the Petrol engine, the Petrol Box combines all of the functions for
dual power operation, as well as controlling the petrol engine itself. The relays in this box control
Starting, High Throttle, Pump Dump, Duty Selector and Engine Stop. There is also an integral Thermal
Trip, which protects the Throttle solenoid and other functions.
18
English/USA 12/09
Courtesy of Crane.Market
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