1, in the normal pressure such as product water flow down to 10-15% of normal.
2, in order to maintain the normal product water flow, the temperature correction after the water pressure increased by 10-15%.
3, the product water quality reduced 10-15%; salt permeability increased by 10-15%.
4, the use of pressure increased 10-15%.
5, RO of the pressure difference between the increase significantly (perhaps no instrument to monitor this sign).