Our FAQs are organized into different topics. Simply select the appropriate category to quickly find the answers that are relevant to you.
Here you'll find a selection of frequently asked questions and answers for a quick overview.
Yes, heavy or uneven soiling can cause what are known as “hotspots,” where certain areas of the solar module heat up more than others. This can damage the solar cells over time. Regular cleaning with suitable photovoltaic cleaners, such as products from Emil Otto, can reduce this risk.
VO Anti-Rust Oil is suitable for protecting machinery, vehicles, attachments, and tools used outdoors from corrosion. Typical applications include agriculture, highway maintenance, construction equipment, cable cars, and maritime applications.
Solar fluxes should ensure reliable wetting, remain stable at the process temperatures used, and leave as little residue as possible. For industrial manufacturing processes, reproducible results and good compatibility with cell technology and the soldering process are also crucial.
Solar panels should be cleaned especially after the pollen season in the spring. During this time, large amounts of pollen often accumulate on photovoltaic panels. Regular visual inspections and cleaning with suitable cleaning agents, such as photovoltaic cleaners from Emil Otto, can help maintain the system’s performance.
No-clean solar fluxes are designed so that, in many applications, no additional cleaning step is required after soldering. This can simplify the process, reduce the cleaning effort, and help maintain consistent manufacturing conditions.
Learn more: No-Clean solar flux for clean soldering processes
The cleaning agents used must combine high cleaning performance with gentle treatment of the solar panel surfaces. Emil Otto offers solar module cleaners for this purpose, which can be used as alkaline, acidic, or neutral cleaners depending on the type of contamination and are generally VOC-free.
No-clean flux leaves only minimal or non-critical residues after the soldering process, thereby eliminating the need for additional cleaning steps. This simplifies industrial manufacturing processes and can contribute to a high level of process reliability in the production of solar modules.
Professional cleaning products are specifically designed to meet the requirements of photovoltaic systems. They remove contaminants such as pollen or dust without damaging the module surface. One example is Emil Otto’s range of cleaning products, which were developed for use in the solar industry.
Rust-preventive oil forms a protective barrier against moisture on metal surfaces, thereby reducing the risk of rust and corrosion. This is particularly important for machinery, vehicles, tools, and attachments that are regularly exposed to rain, snow, or high humidity.
Solar fluxes help ensure stable and durable solder joints in cell bonding. Optimized flux technology can have a positive impact on process reliability, electrical reliability, and long-term module performance.
