F-801 Internal RO System by GE Osmonics

6.Ensure that the water supply to the RO unit is on. If it is partially closed, rotate the dialyze/flush valve to the full flush position.

7.Turn ON the F-801 RO unit and operate in the flush mode for 5-10 minutes. This will aid in rinsing the system quickly.

CAUTION:

Some pump noise (chattering) is normal in the flush position. Excessive pump noise (chattering) can be damaging to the pump. The RO is in “flush” from the full open (flush) position to just before the fully closed (dialyze) position. Adjust it by partly closing the flush valve to reduce chattering of the pump.

8.Rotate the dialyze/flush valve to the dialyze position.

9.Turn the F-801 RO unit ON. Rinse for 20 minutes with the Dialyze/Flush valve in the Dialyze position until the % rejection and TDS monitors’ displays normalize (e.g. 'usual' % rejection and 'usual' TDS reading). Refer to your operating log for 'usual' readings and compare to the pre-cleaning values.

A.During this rinse period, rotate the Dialyze/Flush valve to the Flush position briefly and then back to Dialyze three times to build-up and release pump pressure. This aids in flushing the cleaner from the system.

10.Test the product water for post-cleaning pH and compare it to the pre-cleaning pH level. The values should be the same or very close to the pre-cleaning pH. If it is not, continue rinsing in the Dialyze position until equalization of the value occurs.

11.When all of the parameters (% Rejection, TDS, pH) have normalized, operate the RO for an additional 20 minutes in rinse mode.

NOTE:

Repeat the cleaning procedure with the other pH cleaner. GE Osmonics recommends using a low pH cleaner first, followed by a high pH cleaner after rinsing thoroughly.

12.Turn the F-801 RO unit OFF.

13.Close the product valve and then disconnect the clear accessory flush tubing from the product line (white QD / valve) and store properly. Reconnect the product line to its original connection and open the product valve.

14.Remove the “Do Not Use/Contains Cleaner” warning label.

CAUTION:

The F-801 RO unit must be disinfected after the cleaning procedure.

12552e – 27 Feb 04

4- 15

Routine Maintenance