GE E4H-CE Series - Manual (Page 23)

flow and/or rejection of salts, or an increased pressure drop across the machine will indi-
cate when cleaning is required. GE Osmonics recommends cleaning at least every month
to assure good membrane element performance and long membrane element life.
GE Osmonics offers a full line of chemical cleaners for specific cleaning needs. Refer to
the Spare Parts List (P/N 1233377).
To clean membrane elements:
STEPS
1. The E-CE RO machines do not include a Clean-In-Place (CIP) pump. A CIP
pump and tank need to be installed in order to complete the cleaning process.
GE Osmonics offers a stand-alone CIP system for the cleaning process. Refer to
the Spare Parts List (P/N 1233377).
2. With the E-CE RO machine running, open the CIP permeate valve. After this
valve has been opened, close the permeate service valve. Permeate water will
flow into the CIP tank. Open the CIP tank drain valve. Allow the water to run
through the CIP tank and the CIP drain valve for a few minutes to assure the tank
is rinsed thoroughly. Once the tank is rinsed, close the CIP tank drain valve. The
CIP tank will begin to fill with RO permeate. When the CIP tank has filled to the
indicated full line, press the RO button so it is in the OFF position.
3. With the machine OFF, close the service inlet and concentrate valves and open the
CIP inlet and concentrate valves. This will divert permeate and concentrate
streams to the cleaning container for recirculation. Insure that the pre-filter is
clean. GE Osmonics recommends that you replace the pre-filters prior to clean-
ing and again replace pre-filters after cleaning. Call GE Osmonics Customer
Support Center with questions concerning pre-filter replacement and cleaning.
4. Press the CIP button so it is in the ON position. The cleaning solution should be
recirculated for approximately fifteen (15) minutes or until the solution tempera-
ture reaches 38°C (100°F). DO NOT EXCEED 43°C (110°F). The membrane
elements can only handle temperatures in excess or 29°C (85°F) for short periods
of time. If heat rise occurs to quickly, larger volumes of cleaning solution or the
use of a heat exchanger will slow the temperature rise. Press the CIP button so it
is in the OFF position and allow the machine to soak for ten (10) minutes.
CAUTION Do not leave the cleaning strength solution in the machine for a
period longer than one hour. The cleaning solution may damage
the membrane elements and the machine during an extended
period of contact.
5. To flush the detergent from the machine, close the CIP inlet valve, open the ser-
vice inlet valve, and divert permeate and concentrate to the drain by opening the
CIP drain valve. Press the RO ON/OFF button so it is in the ON position to
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