Emperor PWCRO, Manual

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RO Start-Up
Adjusting the RO System Flow Rates
1. Be sure the pre-treatment systems have been flushed and put in service. If anti-sca-
lant is being used, be sure to confirm the dose and mix of the solution with the rep
before starting the system.
2. If possible, remove the pre-filter and fill it with water. This will remove the majority of
the air in the system.
3. Make sure the water supply is turned on and that you have a minimum of 30 PSI to
the system. The optimal pressure would be 60 PSI.
NOTE: SYSTEM RUNNING PRESSURE CANNOT FALL BELOW 30 PSI
4. Open the concentrate valve completely by turning it counterclockwise. Close the con-
centrate recycle valve (if applicable) completely by turning it clockwise.
5. Turn the RO system on.
6. Let the system run for 5 - 10 minutes to flush the remaining air out of the filters and
membranes.
NOTE: The system may need to be shut off and turned back on several times
to flush the air out and for the system to continue to run. This may be in-
creased if the sediment filter is not filled with water first.
7. Check the running inlet pressure. The pressure should be between 40 - 60 PSI (30
PSI Minimum) during operation to ensure the system will not shut down due to a low
pressure fault.
8. Adjust the system to the designed flow rates without exceeding 150 PSI on the
pump / membrane pressure gauge. This adjustment is system and site specific. The
concentrate valve, concentrate recycle valve, and the throttle valve on the pump will
need to be balanced so the RO meets the designed flow rates for each stream with-
out exceeding 150 PSI on the System Pressure Gauge.
System
Size
Targeted Per-
meate Flow
Concentrate
Flow (No Re-
cycle)
Concentrate
Flow (With
Recycle)
Concentrate
Recycle
Flow
Maximum Sys-
tem Pressure
2000 1.39 GPM 3 GPM 0.5 GPM 2.5 GPM 150 PSI
4000 2.78 GPM 3 GPM 1 GPM 2 GPM 150 PSI
6000 4.17 GPM 3 GPM 1.5 GPM 1.5 GPM 150 PSI
8000 5.56 GPM 3 GPM 2 GPM 1 GPM 150 PSI
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