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15. As the machine purges the air and fills with water, the pressure will gradually
increase. Water should flow through the permeate and concentrate piping, viewed
on the individual flow meters. If you do not see flow, turn the machine OFF and
return to Section 3.2 (Initial Start-Up).
16. Gradually adjust the concentrate flow control valve. As you adjust the valve,
watch the average pressure (P
avg
) and the your concentrate flow meter. Adjust the
valve until your concentrate flow meter displays the desired flow and does not
exceed P
max
. If P
max
is exceeded before the valve is completely closed, open the
recycle flow control valve one full turn, then continue to adjust the concentrate
flow valve.
17. With the concentrate flow control valve set to obtain the desired concentrate flow
and the pressure below P
max
, gradually adjust the recycle flow control valve until
P
avg
reaches 7.6 bar (110 psi). Readjust the concentrate and then the recycle
valves, if necessary.
18. Once the desired flow rate is achieved [7.6 bar (110 psi)] operating pressure, no
further valve adjustment is needed.
NOTE
: Permeate flow rates are dependent upon temperature and conditions at
your site. Contact your distributor if you have any questions.
The system is now operational.
19. Before putting the machine into final operation, continue to run the permeate and
concentrate streams to the drain for at least thirty (30) minutes
. This is done to
ensure that all the preservative have been removed from the membrane elements.
20. Connect the permeate line to the point-of-use of the permeate. Check for leaks
and ensure that you have no kinks in hoses or blockage of any plumbing on the
permeate and concentrate outlet lines.
21. Make any final adjustments for flow and pressure, according to Step 18, if need-
ed.
22. Complete and create copies of the Start-Up Log Sheet (Section 7.2). A Daily Log
Sheet (Section 7.3), including general operating conditions (pressures, flow, con-
centrations, pH, and pretreatment conditions) and routine or special maintenance
(flushing or cleaning as needed) must be kept. GE Osmonics will require these
Log Sheets if a warranty question arises.
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