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Millenium™ RO System by GE Osmonics
14693e - 31 Mar 03 5- 9 Troubleshooting
5.9 Product Flow Too High
1. Rejection Satisfactory
A. Pump pressure too high.
a. Adjust pressure regulator setting to specifications.
B. Feedwater temperature too high.
a. Adjust temperature blending valve.
b. Correct plumbing error that allows the cold water to be heated.
C. Quick disconnect tubing connections not in correct port.
a. Verify QD connections.
D. Product recirculation check valve failed.
a. Refer to Maintenance Procedures for Check Valve Test.
2. Rejection Unsatisfactory
A. Waste flow too low.
a. Check waste flow rate.
b. Check for blockage or kink in waste line.
c. Quick disconnect not connected completely.
B. High pH and chlorines in feed water.
a. Check feedwater for higher than 8.5 and the presence of chloramines.
b. Check pH reduction equipment if applicable.
c. Contact GE Osmonics.
C. ROMA internal seals damaged, dirty, or dislodged.
a. Disassemble ROMA, clean and inspect “O” rings and seals.
D. Membrane hydrolyzed (exposed to oxidant).
a. Verify condition of pretreatment equipment.
E. Membrane damaged (or ruptured).
a. Check for high product pressure.
b. Check for product line being back pressured.
5.10 Leaks
1. General information: Any leak from any part of the system should be corrected as
soon as possible. Left unattended, leaks can cause secondary damage
necessitating expensive repairs.
2. Refer to the Maintenance Procedures for Leak Repair.