Capital Equipment News March 2016

COVER STORY

control unit and the hydraulic system. A controller area network system facilitates a constant flow of information between the engine and hydraulic system, ensuring power is delivered exactly as it is needed. This hydraulic system enables indepen- dent or combined operations. Two travel speeds offer either increased torque or high speed tracking and an auto decel- eration system and cross sensing pump ensure fuel savings. Two variable displacement axial piston pumps have maximum flow capacity of 2 x 206,5 l/ min to reduce cycle times, while a high ca- pacity gear pump, with a maximum flow of 2 x 28,5 l/min, improves pilot line efficiency. The choice between standard and power operating modes optimises performance in all conditions, including harsh environ- ments. Standard mode uses 85 % engine power for general work and power mode uses 100% engine power for heavy tasks. The conveniently situated multi-function colour LCD monitor panel has standard fea- tures for simple control and efficient opera- tion. These controls include mode selection, precise flow rate regulation, auto deceler- ation and display selection. Maintenance and oil change intervals can be displayed, a self-diagnosis function allows technical problems to be quickly resolved and an

operational memory provides a graphic dis- play of the machine’s status.

Easy access to all components, including the engine oil filter, radiators and grease inlets, enables quick maintenance proce- dures and prevents contamination to the surrounding environment. The engine oil filter offers a high level of filtration, allowing an extended interval of 500 hours before changes. A highly efficient water separator protects the engine by re- moving most of the moisture from the fuel. The arm to bucket pivot features a rolled bushing with fine grooves, only requiring greasing every 50 hours. Wear plates on the inside and outside of the bucket lugs increase disc service life. Doosan earthmoving equipment – which encompasses track, wheel and mini exca- vators, articulated dump trucks (ADT’s), as well as wheel loaders and various attach- ments – has been designed to cope effi- ciently and safely in Africa’s harsh operat- ing conditions. The company offers a national technical advisory, maintenance and support ser- vice through its branches in Johannesburg, Durban and Wolmaransstad and dealers in East London, Port Elizabeth, Cape Town, Middelburg, Kimberley, Rustenburg and Bloemfontein. b

Levelling operations, movement of lifted loads and tricky manoeuvres are all con- trolled easily and precisely with control le- vers. Buttons integrated on the levers are used to operate additional equipment, like grabs, crushers and grippers. Ultimately an excavator’s work rate depends on the performance of the operator. For this reason, Doosan’s new DX225LCA machines have been designed with the latest ergo- nomics which enhance efficient operation, improve safety and offer greater comfort. New features include a spacious, all weath- er sound-suppressed cab with a clear all round view, effective air conditioning and an adjustable seat, with an optional air sus- pension system to reduce vibrations. For improved safety, there are large handrails and a wide step with anti-slip plates, right and left rear view mirrors, a travel alarm and safety glass. This series has been designed for easy maintenance and reduced downtime. A PC monitoring function enables connection to the e-POS system. Various parameters can be checked during maintenance, including pump pressure, engine rotation and engine speed. This information can be stored and printed for analysis.

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CAPITAL EQUIPMENT NEWS MARCH 2016