Using this soap multi - feed tank is easy. First, make sure the tank is clean before filling. Unscrew the top of the fill port hub and pour in your preferred bulk foam or liquid soap. Connect the tank to up to 6 compatible soap dispensers such as the 6 - 3100 (Crestt), 6 - 3300 (Metro), 6 - 3500 (Linea), and 6 - 3700 (Zen) series. The system will automatically supply soap to the dispensers. Remember, this product is non - returnable, so be sure it meets your needs before purchase. For maintenance, clean the fill port hub regularly to prevent clogs. Check the chrome - plated finish periodically. If you've chosen the PVD finish option, take extra care as it gives the tank added durability. When the estimated activations are near the limit, it's time to refill the tank to keep a continuous supply of soap.