GE Z-14400 - Manual (Page 78)

Z Series RO System by GE Osmonics
5.2 RO Runs Intermittently
1. Low Water Pressure (Static or Dynamic)
a. Correct cause of low pressure by adjusting pressure regulator or installing a
booster pump.
2. Low Feed Water Flow Rate (Dynamic)
a. Replace pre-filter cartridges.
b. Check pretreatment devices.
c. Check that water supply valves are open.
3. Electrical Connection
a. Ensure the power cord is connected to the appropriate outlet.
b. Check all wiring connections to verify solid connection. Reference the wire
connection diagrams in Chapter 6 for a visual description of wire connection
locations. Restore connections as required.
4. Pressure Switch
a. Adjust or replace pressure switch as necessary.
5. Thermal Overload
a. Check motor starter overload switch for proper amperage setting (more than full
motor amps, but less than 125% of motor full load amps).
b. Verify line voltage and motor amperage draw.
c. Correct the condition that would have caused the thermal overload to trip. Reset
overload as necessary.
5.3 Motor Runs Hot
1. Voltage too low or too high
a. Check voltage against serial number label and motor label, correct condition.
2. Current Draw
a. Verify that flow rates and pressures are within RO specifications.
b. Check that power legs do not deviate by more than ±10%.
c. Verify that all three power wires (legs) have proper voltage (3 phase motors
only).
d. Check motor starter for internal short (1 phase motors only).
e. Check motor insulation.
f. Replace motor as necessary.
NOTE:
All of the above motor problems should blow the fuse in the user supplied main power
disconnect. If not, the fuses are NOT the right size for this unit.
1238339b – 16Oct03 5 - 6 Troubleshooting