OUT line has been studied for the cleaning of any type of photovoltaic system, guaranteeing maximum efficiency and safety. On roof PV panels the pump turns out to have an output with a prevalence of 13 bar. The system allows cleaning the solar panels on the roof leaving the machine on the ground, by connecting it to a water supply and to a power outlet, thereby making possible the cleaning on the roof moving only with the hose, the brush and the pole. For PV plants on ground, the practicality and lightness of the machinery permit an easier cleaning of the photovoltaic panels, thanks to their portability, compact case with stainless steel, shock-resistant, puncture-proof handle and solid wheels.