2. Allow the machine to operate with the concentrate valve open 1/2 - 3/4- of a turn
(Step 1) for 10 - 15 minutes.
3. After 10 - 15 minutes, return the concentrate valve to its previous setting, and
return to normal operation.
CAUTION
: When opening the concentrate valve, never allow the machine’s
primary pressure to drop more than 10% below normal operating
pressure (Table 2.3, E2/EZ2-Series Primary Pressure Range).
2.15 Membrane Element Cleaning
Periodic cleaning of the machine with appropriate membrane element cleaners will pro-
long the life of the membrane elements. Local conditions will determine the frequency of
cleaning. Cleaning may be required when:
1. The permeate quality begins to decline.
2. The reading on the final pressure gauge begins to change noticeably.
GE recommends that you clean your E2/EZ2-Series RO machine every quarter. You may
have to clean the RO machine more frequently, depending on the quality of your feed
water. Cleaning of the membrane elements is vital because contanimants can build-up on
the membrane element surfaces, reducing the permeate flow rate and affecting the quali-
ty of the permeate.
To clean the membrane elements:
NOTE
: It is always best to start with the acid or inorganic cleaner.
STEPS
1. Remove and replace the pre-filter cartridge (Section 2.14, Pre-filter Cartridge).
NOTE
: For best results, GE recommend pre-filters be replaced before and after
cleaning.
2. In a clean container, collect approximately five (5) gallons (19 Liters) of RO
permeate water.
3. Turn machine and water supply OFF.
10
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