Solar Panel Cleaner
The Sacema solar panel cleaner is a solar cleaner designed for large solar farms with agricultural tractors.
The Sacema solar cleaner is a piece of equipment specifically designed for cleaning solar panels in large photovoltaic installations using agricultural tractors. It is attached to the tractor’s front three-point linkage and is a functional machine that provides performance and efficiency in photovoltaic maintenance operations.
The main part of the solar cleaner is the arm with its 5 hydraulic movements (3 cylinders and 2 slewing rings), which position the brush at any angle over the panels.
This equipment manufactured by Sacema incorporates a double slewing ring, providing greater maneuverability, symmetrical left/right operation, improved access in narrow aisles, and an optimized transport position. A key differentiating feature of this equipment is the LEVISAC control system, which combines fluid-dynamic balance with power electronics control, allowing the operator to activate levitation and thus absorb terrain irregularities while also enabling full locking of the equipment with advanced functions.
Levisac allows the brush to levitate over the solar panels, following terrain irregularities transmitted to the tractor, and enables the operator to maintain full control at all times, deciding which hydraulic groups levitate independently, the degree of levitation, and activating electronic panel edge detection or brush separation when the minimum safety distance is reached to avoid impacts.
All of this is controlled by the operator using the joystick trigger, from which levitation over the panel can be activated or fully locked to prevent uncontrolled movements, along with an HMI screen for electronic configuration of the equipment via an industrial PLC.
The equipment cleans the panels using industrial brushes with technical filaments, driven by a hydraulic motor, combined with water spray bars, and depending on the model, distance sensors to the solar panel.
Optionally, it includes a rear water tank that provides water storage and stability to the system. It is powered by the tractor’s PTO and incorporates a flow regulation valve to pump water from the rear of the tractor through the arm to the brush spray nozzles. These are positioned on both sides, and the operator can choose to activate one spray bar, the other, or both.
If you have any questions about this or any other brush, please do not hesitate to contact us.
- Hydraulic Arm
Its function is to support and position the brush. It consists of several welded subassemblies, starting from the base of the three-point linkage where the main slewing ring is located and from which the first arm section originates, with its first two cylinders for lifting/lowering and extending/retracting.
At the second joint, there is the second slewing ring, a distinctive feature of Sacema’s solar cleaner that provides full symmetry, from which the second arm section extends to achieve the desired reach.
At the brush connection, there is the third cylinder, which provides the working angle relative to the panel.
The equipment includes a pair of support legs for resting when it is not attached to the tractor.
- Brush
The brush unit is responsible for the machine’s main function: brushing the panel surface and performing cleaning.
This unit includes its own frame (attached to the arm for easier transport), a hydraulic motor-driven shaft, the brushes themselves, water spray bars, and distance sensors depending on the model.
The brush features two stainless steel spray bars, positioned parallel to the brush (one on each side), equipped with multiple water nozzles and corresponding solenoid valves that can be opened or closed according to the operator’s needs from the tractor cab.
- Levisac
This is a fully distinctive system integrated into the Sacema solar cleaner. It combines control electronics using a Siemens PLC and HMI, a joystick, sensors, and a system of solenoid valves whose function is to make the cleaner levitate over the solar panels by reproducing terrain irregularities transmitted through the tractor.
The operator configures levitation settings via the touchscreen according to working conditions and can activate or deactivate Levisac using a joystick trigger or a touch button on the HMI screen in the cab.
- Water Tank
The solar panel cleaner includes a rear-mounted water tank on the tractor, used for water storage and to improve system stability.
It typically has a capacity of 1500 liters, is attached to the rear three-point linkage, and powered by the tractor’s PTO. A hose must be connected from the tank to the front of the tractor.
Important: We recommend conducting a stability study of the tractor and solar cleaner assembly, as the brush adds weight at a distance from the tractor, shifting its center of gravity and potentially causing unpredictable rollover risks. It is also advisable to study the addition of ballast or counterweights to improve system stability.
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