Using this toilet suite is easy. Simply choose between the 4.5 or 3 liters flush option according to your needs. For regular use, the 3 - liter flush is usually enough, while the 4.5 - liter flush is great for larger waste. When installing, make sure to connect the included Trap - 100 correctly. If you choose to use one of the optional traps, follow the installation instructions carefully. As for maintenance, clean the toilet regularly with a mild cleaner. Avoid using abrasive cleaners as they can damage the surface. Check the cistern for any leaks periodically. If you notice any issues with the flush or other components, it's best to call a professional plumber.