Portable reverse osmosis water purification system

A method for operating a reverse osmosis fluid purification system, the method comprising:

• initiating a disinfection cycle;
• draining an internal tank to a minimum level;
• pumping input fluid from a fluid source through a membrane to generate product fluid and waste fluid, wherein the waste fluid is provided to a drain port;
• terminating flow of the input fluid from the fluid source;
• directing the product fluid to the internal tank until the internal tank is filled to a maximum level;
• and
• pumping an amount of the product fluid from the internal tank through the membrane until the product fluid in the internal tank is at an intermediate level between the minimum and maximum levels, wherein the amount of product fluid pumped from the internal tank forces fluid between the internal tank and the membrane through to the drain port.

A method for operating a reverse osmosis fluid purification system, the method comprising:

• disconnecting the fluid purification system from a fluid source and waste port;
• transporting the fluid purification system to a storage location;
• connecting the fluid purification system to an electrical source at the storage location;
• and
• performing a storage heat cycling mode in which the product fluid in the internal tank is repeatedly heated and circulated through the reverse osmosis fluid purification system.