Good news for Ukrainian farmers was the arrival of a new development from HORSCH: the Horsch Leeb LT and GS series trailed sprayers. The machine caused a sensation on the sprayer market. Its concept is unlike any machine released before. Here are the key points of its design.
The spray tank on all Horsch Leeb sprayers is made of polyethylene (LT series) or stainless steel (GS). To lower the machine's centre of gravity, it is shaped to sit astride the frame like a rider. Around 1,000 l of the total tank volume is therefore at the height of the plant stems. The spray liquid flows to the suction filter through two outlets with short hoses and a central pipe.
Worth noting is the 3-inch centrifugal pump, which needs virtually no maintenance. With a stated maximum output of up to 1,000 l/min, the tank fills in just 7 minutes, which calls for particular skill when adding products. Fortunately, the pump output can be adjusted. Other advantages of the pump include its compact design, no pressure relief valve and no additional hoses. The required pressure is controlled electronically by changing the pump speed according to the intensity of the operation. The pump is driven by the tractor's Load Sensing hydraulics.
"The best hose is no hose" was the motto the designers followed when developing the machine. The updated version was built on the same principle. Most hoses are as short as possible and are grouped in one box at the front of the machine, which also houses the pump, the filter and the electrically operated ball valves. The only long hose leads to the spray boom. The tank is filled from a convenient, fully electric control panel on the left of the machine. Next to it is a locker for protective clothing. The tank fill level can be monitored, as on the terminal, on an electronic display next to the panel. When the tank is full or the amount of spray liquid set on the terminal has been reached, the water supply stops automatically.
The induction hopper is also made of stainless steel and lowers gently on gas struts for the user's convenience.
Boom height is controlled by the DistanceControl system. Both boom wings are rigidly fixed relative to each other. This is enough for flat land. For uneven terrain there is the BoomControl solution, where the boom wings move vertically independently of each other, guided by signals from 4 sensors.
Numerous nozzle layout options greatly widen the machine's range of use. According to the manufacturer, 70% of HORSCH LEEB machines are ordered with 25 cm nozzle spacing. Pneumatics let you choose the spray mode for the task at hand. In addition, 25 cm nozzle spacing allows the boom to be lowered very close to the crop canopy, practically eliminating spray drift from wind.
New: tank capacity now in four versions: 4,000, 5,000, 6,000, 7,000 or 8,000 l
High-output trailed sprayer
Working width up to 42 m
Long-life spray tank
Durable, long-life centrifugal pump
The rinsing programme works on the displacement principle, cleaning quickly with little water
Friction-locked joints in the steel spray booms
Despite the parallelogram suspension, the sprayer design allows the boom to sit directly behind the rear axle
Hydraulic steering with steering knuckles
Fresh water tank capacity of 530 l
Filling rate 1,000 l/min
The 530 l fresh water tank is at the rear of the machine.
An additional diaphragm pump supplies fresh water to the rinsing nozzles, while the centrifugal pump continuously pumps liquid out of the tank. The result is a rapid drop in solution concentration, which speeds up cleaning.
At the front of the machine, three pressure gauges are conveniently placed for monitoring product agitation, working pressure and tank cleaning.
The centrifugal pump has electronic dry-run protection.
A ladder gives quick, easy access to a spacious platform for visually checking the tank.
A hydraulic parking stand is standard.
A powerful LED work light (option), mounted on the inside of the boom sections, lights up even the outer ends of the boom. To prevent fouling, the light lens is rinsed every time the main valve is closed. A monitoring camera is also offered as an option.
GS electronics are ISOBUS compatible, so the machine can also be controlled from the tractor terminal. Two different in-house terminals made by Müller Elektronik are also available.
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