GE F-801 User Manual

Page 58

F-801 Internal RO System by GE Osmonics

12552e – 27 Feb 04

4- 18

Routine Maintenance

Turn the Dialyze/Flush valve to the Flush position and operate RO for an
additional 5-10 minutes. The Flush mode will allow the flow of cleaner only to
the reject side of the RO membrane to flush particles away. Very little or no
product water will be made. Pump pressure during this step should read
approximately 40-80 PSI.

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 (operate) position. Adjust
by partly closing the flush valve to reduce the chattering of the pump.
NOTE:
The % rejection will fall below 85% and the TDS will rise considerably when the
cleaner is re-circulated through the F-801 RO unit.

Turn the F-801 RO unit OFF.

WARNING:
The F-801 RO machine in now completely filled with BIOSAN cleaning solution
and must NOT be used to supply water to the Fresenius dialysis machine or for
any other purpose until a complete rinse procedure has been performed. See
Cleaner Rinse Procedure below.

Allow the BIOSAN to dwell in the RO for a minimum of one hour.

NOTE:
Thin-film RO membranes: The F-801 RO unit may be stored in BIOSAN for up
to two weeks.

4.3.2.3 BIOSAN Post-Cleaning Rinse Procedure

After the dwell time, remove the waste hose and clear accessory flush line from
the cleaning solution and place it in the drain with the appropriate air gap.

Turn the RO on and run cleaning solution to the drain until the container is
empty. This aids in emptying the container of cleaning solution.

CAUTION:
DO NOT ALLOW THE PUMP TO RUN DRY. As an alternative, the solution
may be poured in the drain.
CAUTION:
Do not allow air or foam to be drawn into the RO system, as this will damage the
pump.

When the disinfect/cleaning tank is empty, turn the F-801 RO unit OFF.

Reconnect the feed line to the pre-filter outlet (green QD).