Operations and Maintenance Manual
E4H Series Water Purification Machine
28
Do not operate the machine below the designated pressure without
approval from GE Water & Process Technologies. Operation below the
stated pressure may be detrimental to the pump.
Caution!
3. Return the concentrate valve to its previous position
4.4 Cleaning
Cleaning the E-Series machine on a regular basis is vital. Over time, contaminants build up to
form a layer on membrane surfaces, reducing the permeate flow and quality. If this buildup is
not removed from the membrane, it may cause permanent chemical damage and reduce
membrane life. A decrease in permeate flow and/or rejection of salts, or an increased pressure
drop across the machine will indicate when cleaning is required. Cleaning may be required as
often as once every week or as infrequently as every three months, depending upon the local
water supp
ly
conditions. GE Water & Process Technologies recommends cleaning at least
once a quarter to assure good membrane element performance and long membrane element
life.
4.4.1 CLEANING PROCEDURE FOR DLX AND ECN MODELS:
1. With the 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. Allow the
water to run through the CIP tank and the CIP tank drain valve for a few minutes to ensure the
tank is rinsed thorough
ly
.
After a minute or so, close the CIP tank drain valve. The CIP tank should begin to fill with RO
permeate. When the CIP tank has filled to the indicated full line, turn the RO System Selector
on the AccuTrak® RO controller (DLX model) or the ON/OFF two position power switch (ECN
model) to the OFF position.
2. While the machine is OFF, open the CIP inlet valve. Divert the permeate and concentrate
streams to the CIP tank for recirculation. Ensure that the pre-filter is clean. A CIP pump
(supplied with DLX models only) is recommended to suppl
y
feed pressure into the machine
3. For DLX models only - ECN models go to step 4: Highlight CIP Pump on the AccuTrak® RO
controller and select AUTO mode. Next, highlight RO system and select CIP mode and
recirculate the cleaning solution through the machine. It is best to clean at temperatures of
100°F to 110°F (38°C to 43°C), but lower temperatures will suffice. The cleaning solution should
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