Addition of binding agents
Precise metering system
Simply keying in the specified parameters once is not enough to achieve high-quality mixing results. They need to be maintained at their preselected values for the entire duration of the stabilizing or recycling operation. The WR has all it takes to meet these requirements: parameters are entered quickly and conveniently via a small number of controls in the left-hand arm console and via the control screen. The menus are structured clearly and logically, enabling the individual pages to be called up quickly. Large, readily comprehensible displays keep the operator fully informed of current parameters during the operation and, if need be, he can adjust the relevant parameters quickly and easily.
Microprocessor-controlled flow meters govern the addition of water, bitumen emulsion or foamed bitumen. The binders are added in accordance with the previously specified parameters, such as working width, working depth, material density and machine advance rate. The injection bars are fitted with up to sixteen spray nozzles each which can be switched on or off separately at any time during the process to adjust the spraying width.
Self-cleaning feature comes as standard
Movable tappets automatically remove any binder build-ups occurring at the nozzle outlets during the recycling operation. Regular self-cleaning of the spray nozzles via the tappets ensures precise metering across the entire working width. Cleaning of the nozzles is not only performed automatically at fixed time intervals but can also be conveniently activated manually via the screen whenever necessary. Raising the revolving rotor to maximum height manually at the same time enables build-ups of encrusted material at the nozzle outlets to be removed.
Integrated binder spreader
The “S-Pack” (Spreader-Pack), which can be integrated in the WR 240, WR 240i or WR 250 as an optional feature, is the ideal candidate for the dustless addition of binding agents in cold recycling or soil stabilization. Lime or cement is spread right in front of the milling and mixing rotor in a microprocessor-controlled operation. “S-Pack” is synonymous with the reliable and dustless processing of binders especially on motorways, in industrial estates specifying strict emission requirements, residential areas or nature reserves.
The “S-Pack” spreader is loaded to capacity in less than five minutes. A standard 27-tonne silo transporter is emptied within two hours. The spreading process is controlled and monitored intuitively via the integrated control screen. The outstanding all-terrain mobility of the WR model series now allows binders to be spread safely and precisely even on insufficiently stable ground.
Dustless, highly precise spreading of binders regardless of weather conditions.
Maximum customer benefit
- Dustless, precise spreading of binders regardless of weather conditions.
- Compliance with strict emission standards wherever the development of dust must be avoided.
- Operation of the unit fully integrated into the control screen.
- Low labour, machine and transport costs.
- Traffic, in particular on motorways, is not impaired by windblown pollution.
- Precise binder discharge even on insufficiently stable ground.