3030226 Rev. D 6-9 Troubleshooting
6.11 Product Flow Too High
1. Rejection Satisfactory
a. Quick disconnect tubing connections not in correct port.
1. Verify QD connections.
2. Rejection Unsatisfactory
a. Waste flow too low.
1. Check waste flow rate.
2. Check for blockage or kink in waste line.
3. Quick disconnect not connected completely.
b. High pH and chlorines in RO feed water.
1. Check RO feed water for pH higher than 8.5 and the presence of
chloramines.
2. Check pH reduction equipment if applicable.
3. Contact Mar Cor Purification.
c. Membrane internal seals damaged, dirty, or dislodged.
1. Disassemble the membrane assembly, clean and inspect O-rings and
seals.
d. Membrane oxidized (exposed to oxidant).
1. Verify condition of carbon pretreatment equipment.
2. Overexposure to MINNCARE HD.
e. Membrane damaged (or ruptured).
1. Check for high product pressure.
2. Check for product line being back pressured.
f. Normal membrane rejection decline (over time).
1. Perform AAMI/CSA water lab analysis.
2. Replace membrane if indicated by analysis.
6.12 Leaks
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.
Refer to Section 5.2.1 “Leak Repair”.
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