GE Z-14400 - Manual (Page 79)

Z Series RO System by GE Osmonics
5.4 Water Produced While RO is Off
1. Inlet Solenoid Valve
a. Cycle valve off and on with power switch to clear obstruction.
b. Remove valve and clear obstruction.
c. Replace valve as necessary.
2. RO By-Pass Valve (Indirect Feed Units only)
a. Verify the bypass valve is not inoperative. Clean or replace valve as necessary.
3. Product Return Check Valve (Direct Feed Units Only)
b. Verify the check valve is not inoperative. Clean or replace valve as necessary.
5.5
Low Waste Pressure
1. Pump Pressure
a. Verify pump rotation.
b. Inspect motor and pump coupling for wear at shaft key (non-submersible only).
2. Low Operating Pressure
A.
Waste or Product Flow Too High
a. Adjust waste flow to equal product flow rate.
b. Adjust system pressure.
B. Incorrect Pump Rotation (3 phase motors only)
a. Switch any two of three power leads to unit at service disconnect.
C. Faulty Pressure Relief Valve
a. Replace valve as necessary.
5.6
Pressure Gauge Vibrates Erratically
1. Air In Gauge Tubing
a. Loosen tube fitting at gauge to bleed air.
2. Obstruction In Gauge Orifice
a. Remove obstruction as required.
3. Faulty Gauge
a. Replace gauge as necessary.
1238339b – 16Oct03 5 - 7 Troubleshooting