Using this vacuum cleaner hose is simple. First, locate the opening on your Volta Power Plus U4401 where the hose attaches. Align the end of the hose with the 37.5mm diameter opening on the machine and gently push it in. You'll hear a click when it's properly in place. If you need to remove the hose later, just press the two small push - to - release buttons. When using the bent end piece, make sure it's securely connected to the pipe. As for maintenance, after each use, give the hose a quick shake to remove any loose dirt or debris. Every few months, you can use a mild detergent and a soft cloth to clean the inside and outside of the hose. Store the hose in a cool, dry place when not in use to prevent any damage. Always check for any signs of wear and tear, like cracks or holes, and replace the hose if necessary.