

LEADING hydrodemolition equipment company Aquajet Systems has launched its next generation of the proven Aqua Cutter series of robots with the 710 V Classic, which offers improved automatic and manual options to suit the demands for efficient concrete removal.
The new model is suitable for working on bridges, tunnels, roads, walls, parking garages or overhead roofs. Working with a typically 1,000 bar pressure and 250 litre per min, the robot handles removal depths down to approximately 1,000 mm of concrete, if required.
“Aquajet has recognised that there is frequently a demand for its hydrodemolition systems with reduced computer control, allowing manual handling with, for example, flow control valves for oscillating speed, roller speed, lance-angle speed and mechanical stops for operation widths and lance angles,” says a spokesman for the Sweden-based company.
Facilitating operator comfort and convenience, new improvements have been made to the settings of programmes with several parameters easily selected and adjusted on the colour display with iconic multilanguage operator instructions.
Built to operate in tough conditions, the system has been designed with the operator in mind and is easy to operate, he adds.
“The 710V robot is the most versatile hydrodemolition machine on the market, suitable for all operations – horizontally, vertically and overhead,” the spokesman says. “The flexibility of this robot allows to execute all possible operation, the unique 3-D positioning of the front power head gives the operator full freedom to efficiently reach all areas and for example, do vertical operations along the surface or against the surface. This also features operations in confined areas without limitations due to the compact and free manoeuvrable design.”
Aquajet robots are equipped with the patented EDS (equal distance system), which regardless of the set lance-attach angle, controls and maintains the nozzles distance from the concrete surface. Maintaining an optimum distance, EDS ensures that no power is lost due to the nozzle being too far from the surface. This in turn ensures a 15 to 20 per cent increase in removal capacity. The lance-attach angle can be set from –30 to +30 degrees allowing for efficient removal of concrete under rebar.
The machine is equipped with the patented ISC (intelligent sensing control), an advanced sensing system where no electronics, such as sensors or cables, are exposed to the moisture environs, resulting in a more efficient production with fewer stops due to problems with sensors.
The total length of the robot varies from 2.65 to 2.85 m and the total width is 2 m. It has a minimum height of 1.42 m and, with a sturdier base, an extended free vertical reach of up to 7 m is possible besides 4-m operation width.
“The variable-width chassis provides maximum stability during set-up and operation,” the spokesman says. “In addition, the low centre of gravity in the chassis further enhances the stability. In its narrow version, access to the tightest passages – doorways, alleys, footbridges – is achieved. The variable track width extends from 1.04 to 1.64 m to offer optimal stability.
The robot has a unit weight of 2,300 kg.
Furthermore, a new improved rubber lined splashguard on the power head ensures improved noise reduction. “Easy service access is also assured with ‘gull wing’ hoods and ‘fold down’ hydraulics for cleaning and maintenance,” the spokesman adds.
Aquajet Systems is a world-leading company in design and manufacturing of versatile hydrodemolition machines to selectively remove deteriorated concrete from sensitive areas and engineered structures.