Neptronic WP440L Series, Инструкция по установке и руководство пользователя

Страница: 35 / 48

WP440L-Series Reverse Osmosis System
Installation Instructions and User Manual
www.neptronic.com Page | - 35 -
Table 11 – Common Foulants
Foulant Symptoms Solution/Cartridge Part #
Biological Growth
Element may have strong odor, possible mold growth on scroll
end. Element will likely exhibit low permeate flow, but salt
rejection will usually be as good if not better than original test.
Alkaline Cleaner: AM-22
Cartridge: C-C2520-A22
Carbonate Scale
Usually on tap water or brackish water elements only. The
element may be noticeably heavier than normal. Element will
exhibit low permeate flow and poor salt rejection.
Acid Cleaner: AM-11
Cartridge: C-C2520-A11
Iron Fouling
Rust coloring seen on end of scroll. Possibly some large rust
flakes from iron plumbing. Element will exhibit low permeate flow
and poor salt rejection. Rust colored reject water may be seen on
start of baseline test.
Acid Cleaner: AM-11
Cartridge: C-C2520-A11
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
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
Common Foulants and Their Associated Symptoms
Cleaning Sequence
Cleaning Procedure Using Membrane Cleaning Cartridges