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Z Series RO System by GE Osmonics
4.2 Specific Maintenance Procedures and Instructions
4.2.1 Pump Lubrication Procedure
NOTE:
Submersible multi-stage centrifugal pumps do not require lubrication.
1. Use No. 2 Lithium grease (with molybdenum disulfide) as a lubricant (GE
Osmonics P/N 50040).
2. Operate the RO for at least 15 minutes to bring the pump bearings to normal
operating temperature.
3. Remove the plug from the pump bearing frame.
4. Slowly add 9 shots (12 grams) of grease through the fitting on the bearing frame
with a hand operated grease gun. Remove any grease that exits through the open
port. Add 6 shots (9 grams) of grease to the other grease fitting and remove any
excess.
CAUTION:
If the bearing frame is over-lubricated, the pump shaft bearings may run excessively hot
or the pressure of the grease will blow the mechanical seal out of its seat. If either of
these problems occurs, the pump will leak and may be damaged beyond repair. Do not
force grease into bearing frame.
5. Allow the RO to run for an additional 5 minutes or more. While the RO is
running, some grease may exit the bearing frame from the open port. This is
normal and should not be a concern. After the RO has been running for some
time, re-install the plug into the open port. Clean the bearing frame thoroughly.
4.2.2 Product Water Divert Verification
1. Disconnect the drain line at the drain connection from the Product Divert Valve.
2. Turn on the RO unit and verify the following:
a. Product Divert Controller indicator illuminates.
b. Divert valve opens and product water diverts to drain.
c. Divert valve closes after an approximate two-minute start-up delay
and the
product water stops being diverted to drain.
NOTE:
The TDS must be below the alarm set point for the product divert valve to close. Adjust
the TDS selector switch on the RO unit as required.
1238339b – 16Oct03 4 - 6 Routine Maintenance