Axeon DT-Series Manuel d'utilisateur télécharger pdf (Page 32)

DT – Series User’s Manual

MKTF-208 06/12

FLUSHING THE SYSTEM

The system should be flushed weekly to remove sediment from the surface of the

membranes. To manually flush the system, follow the preceding steps:

1. The system must be operating during the flush procedure.

2. Fully open the concentrate valve. (Figure 1B, Page 17)

3. Allow the system to run for 10 to 20 minutes.

4. After 10 to 20 minutes, close the concentrate valve to its previous setting. Ensure

the proper concentrate flow rate is going to the drain.

5. The system is now ready to operate.

PREPARING UNIT FOR STORAGE OR SHIPMENT

Prior to shipping or storing your system, the system should be cleaned with an

appropriate cleaner, flushed with water and protected from biological attack with an

appropriate solution for membrane elements. The membrane housing(s) and plumbing

lines of the system must be completely drained. Any water remaining in the plumbing of

a system may freeze, causing serious damage.

Preparing system for storage:

1. Totally immerse the elements in the membrane housing in a solution of 2 %

Memstor, venting the air outside of the pressure vessels. Use the overflow

technique: circulate the Memstor solution in such a way that the remaining air in

the system is minimized after the recirculation is completed. After the pressure

vessel is filled, the Memstor solution should be allowed to overflow through an

opening located higher than the upper end of the highest pressure vessel being

filled.

2. Separate the preservation solution from the air outside by closing all valves. Any

contact with oxygen will oxidize the Memstor.

3. Check the pH once a week. When the pH becomes 3 or lower, change the

preservation solution.

4. Repeat this process at least once a month.

During the shutdown period, the plant must be kept frost-free, or the temperature must

not exceed 113°F (45°C).

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Axeon DT-Series Manuel d'utilisateur Page 32