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Z Series RO System by GE Osmonics
17. Turn off the RO unit and pour the last amounts of cleaner into drain to protect the
pump from running dry. RO systems equipped with a Disinfect Alarm Monitor
will use the RO unit power switch to turn off the pump and stop circulation. RO
systems without a Disinfect Alarm Monitor will use the Disinfect key switches to
turn off the pump.
18. Rotate the Disinfect Inlet Valve to the closed position. Allow the disinfectant
solution to remain in contact for a minimum of two hours, or preferably
overnight.
NOTE:
Reference section 4.6, System Storage, for additional storage information.
4.4.1.2 Post Formaldehyde Disinfection Rinse Procedure
1. Remove the Disinfect Inlet Valve disinfection line from disinfect tank and
connect to drain.
2. Ensure that the water supply to the RO unit is on. Ensure Direct Feed RO units
have the loop return ball valve, mounted vertically just prior to the pump housing,
is in the open position, and loop flow is being returned to the unit.
3. Turn on the RO unit power switch and allow the RO to rinse for 10 minutes. RO
systems with the Disinfect Alarm Monitor and RO Status Monitor must have both
disinfect key switches in the off/normal operation position to continue rinse
operations.
4. Slowly open the Disinfect Inlet Valve and allow water to rinse to drain. A low
pump feed pressure condition may be created if this valve is opened too far.
5. Close the valve and disconnect drain hose.
6. Turn the power switch ON and OFF in alternating one minute cycles to rinse out
any trapped disinfectant in the RO unit. Repeat 3 times.
7. Continue to rinse for an additional 20-30 minutes. Open each use point in the loop
if the loop piping was disinfected.
8. Check the product effluent and each use point as applicable for the absence of
disinfectant. Continue rinse until absence of disinfectant is confirmed
9. Turn off the RO unit power switch when the absence of disinfectant is confirmed.
10. Reconnect the product line to the Product Divert Valve Assembly.
11. Remove the "Do Not Use/Contains Disinfectant" warning label(s).
1238339b – 16Oct03 4 - 19 Routine Maintenance