GE E4LE - Manual (Page 24)

5. Let the CIP solution dwell in the machine for 20 minutes.
6. After the 20 minute dwell time, start the CIP recirculation process
again for 10 minutes.
7. After the 10 minute recirculation time is complete, de-energize the
machine. Then, open the inlet water line and route the concentrate
and permeate lines to the drain.
8. Start the RO machine and flush to drain for 20 minutes. Verify the per-
meate quality is good before returning to normal operation.
9. After permeate quality is verified as good, route the permeate to point
of use and concentrate to drain. You are now ready for normal oper-
ation.
2.20 Suction Cleaning
GE does not recommend the suction cleaning method to clean the E4-Series RO
machine. If using suction cleaning, reference cleaning with a CIP pump above
(Section 2.19.2, Procedure to Clean with a CIP Pump).
STEPS
1. Arrange the RO and the CIP container in a closed loop situation with the
cleaning solution, reference Section 2.19 (Membrane Element Cleaning).
2. Move the L1 and L2 wires on the pressure switch across to the motor termi-
nals (Figure 2.1, Three Phase Allan Bradley Motor Starter). The wires can also
be temporally jumped.
3. Open the inlet feed valve.
4. Start the RO machine
5. As the machine starts up on inlet feed water, slowly close the inlet feed water
valve while slowing opening the feed water valve to the CIP tank.
You will begin to hear the RO pump draw the CIP solution into the machine
and circulate it back into the CIP tank. After achieving prime, observe the RO
closely to ensure that you do not loose pump prime, which may result in
pump damage.
6. Refer to the CIP cleaning procedure (Section 2.19.2) for cleaning steps.
WARNING: LOSS OF PRIME DURING SUCTION CLEANING MAY RESULT IN
SERIOUS DAMAGE TO THE PUMP.
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