The maintenance of metal solar roofs mainly includes cleaning, inspection and rust prevention.
Cleaning
Cleaning frequency: It is recommended to clean photovoltaic modules 1 to 2 times a year, preferably in the morning or evening when there is no direct sunlight.
Cleaning method: Use a soft brush or clean water to clean the surface of the module, and avoid using corrosive solvents or hard objects to wipe it to avoid scratching the surface coating. For stubborn stains, use a mild neutral detergent and wipe it gently with a soft cloth.
Cleaning tools: You can use a high-pressure water gun for cleaning, but be careful not to use too much water pressure to avoid cracking the module.
Inspection
Photovoltaic bracket inspection: Regularly check whether the connection parts and welding parts of the bracket are firm to ensure that there is no loosening or deformation. Check whether all fixing bolts are loose or rusted, and tighten and replace them in time.
Combiner box and line inspection: Regularly check whether the electrical connectors in the combiner box are firm and free of corrosion, check the connection of all cables and lines to ensure that there is no breakage, aging or looseness, and replace aging or damaged lines if necessary.
Inverter maintenance: Check the operating status of the inverter to ensure that it converts the direct current generated by the photovoltaic modules into alternating current for home or business use.
Anti-rust treatment
Check for rust: Check the metal frame monthly, especially the exposed and water-prone parts. If rust is found, it should be dealt with in time. For minor rust, lightly sand it with sandpaper and then apply anti-rust paint or rust inhibitor; for severe rust, contact a professional for repair.
Rust prevention measures: Use paint pens or metal touch-up paint produced by the roof metal manufacturer to repair scratches for the best color match.
