Genaral Information
To ensure proper start up of your RO membrane water treatment is essentialto prepare the membranes for operating service and to prevent membrane damage due to overfeeding or hydraulic shock.
Operational Guidelines
It is critical to avoid and abrupt pressure r cross-flow variations on the RO membrane element during start-up, shutdown, cleaning or other sequences to prevent possible membrane damage. During start-up, a gradual change from a standstill to operating state is recommended as follows:
- Feed pressure should be increased gradually over a 30-90 second time frame.
- Cross-flow velocity at set operating point should be acheived gradually over 15-30 seconds.
- Permeate obtained from first hour of operation should be discarded.
Important Information
- Keep RO membrane elements moist at all times after initial wetting. If operating limits and guidlines given in this specification are not strictly followed, the limited warranty with supplier will be null and void.
- To prevent biological growth during prolonged system shutdowns, it is recommended that RO membrane elements be immersed in a storage solution.
- The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
- Maximum pressure drop across an entire pressure vessle (housing) is 50psi (3.4 bar).
- Avoid static permeate-side backpressure at all times.
