Installation and Service Manual – L Series Reverse Osmosis System
Systems and Components
Membranes
,
Filters
,
Chemicals
2325 Cousteau Ct., Vista, CA 92081 USA • www.appliedmembranes.com • E-mail: [email protected]
Copyright © 2008 Applied Membranes, Inc. All Rights Reserved.
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Cleaning Sequence
Whether the system needs acid or alkaline cleaning will depend on the type of foulant suspected. We recommend acid
cleaning be performed first, even when alkaline cleaning is desired. If system performance recovers with acid cleaning,
then alkaline cleaning is not necessary.
1.
ACID CLEANING (AM-11, C-C2520-A11)
2. FLUSH
3.
ALKALINE CLEANING (AM-22, C-C2520-A22)
4. FLUSH
Cleaning Procedure Using Membrane Cleaning Cartridges
1. Shut down the RO system.
2. Disconnect the permeate line and divert permeate to drain during cleaning.
3. Remove the pre-filter cartridge from the filter housing.
4. Replace the sediment pre-filter cartridge with the cleaning cartridge and assemble into the filter housing.
5. Turn system ON. After 30-40 seconds*, shut down the system.
6. Let the membrane(s) soak in the cleaning solution overnight.
7. Remove the empty cleaning cartridge and replace it with the original filter.
8. Restart the system. Direct the permeate to drain for 5 minutes.
9. Go back to normal operations.
*Instead of time, you may use one of the following criteria:
a. Run the system until the pH of the concentrate is almost the same as the cleaning solution.
• AM-11 pH = 3
• AM-22 pH = 10-12
b. Permeate rate for the system drops to a very low value.
Caution:
Handle all chemicals with care. Wear protective clothing and eye protection.
Note:
The system must be flushed thoroughly between acid and alkaline cleanings.
Membrane Replacement
1. Remove clamps from vessel using 9/16” socket or wrench. Use two screw drivers on each side to push end caps out
of vessel slowly.
2. Push the membrane out through the vessel from the feed end towards the concentrate end.
3. If there is not enough room to remove the membrane from the vessel through the concentrate end it can be removed
from the feed end.
4. Install the new membrane from the feed end. Ensure that the brine seal is oriented towards the feed end. Check that
the end adapters and all o rings are in good condition and in position.
5. Replace end plug(s) using glycerin lubricant as required on O rings (AMI Model No. H-C111DC).
6. It is highly recommended to have a spare set of O-rings and brine seal while replacing the membranes.
7. As the membranes may have preservative or be contaminated, please wash your hands thoroughly after replacing
membranes.
