Rainsoft service call from a lady in Norwich, Norfolk. After talking with the customer, she informed me that her Rainsoft reverse osmosis water purifier was not producing much drinking water, in fact when she opened the faucet she got a cup full of water, then it stopped. There were a couple of problems that caused this. The pressure in the storage tank was at zero, and the membrane was scaled up with lime scale. After carry out a complete service on the water purifier and replacing the filters and membrane. The reverse osmosis system was working great again.