Ecosoft MO6500BWTSS - Page 8

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8
INSTRUCTION MANUAL ECOSOFT RO SYSTEM MO6500BWTSS
3.9 Let the unit run for 1 hour discarding both permeate and concentrate to drain to ush out
the membrane preservave. Watch ow rate and pressure gauges to make sure they do not deviate
from the setpoint.
Take care not to exceed the maximum specied pressure in membrane module. If the
membrane pressure rises above the upper limit in specicaon, open recycle ow
regulang valve to bring it down.
Turn regulang valve knobs smoothly when regulang recycle and drain ow. Do not
make rapid turns or apply disproporonate force as this can damage the unit.
START UP THE SYSTEM AS FOLLOWS:
3.7 Fully open recycle and drain ow regulang valves before powering up the system. Make
sure to discard all permeate obtained during the rst run of the RO system.
3.8 Power up the system. The controller will boot up and begin service. Wait unl the air
is vented from the system and the pressure reading stabilizes. In case low feed pressure fault or
another fault occurs, see Troubleshoong secon for help.
Tighten drain ow control valve unl drain rotameter reading meets the specicaons (see
Table 1). Then, start turning down recycle regulang valve. This will rapidly raise pressure in the
membrane array (shown on pressure gauge up front). Stop regulang recycle ow control when the
permeate ow rate reaches full capacity or when the pressure in the membrane module reaches
the upper limit (see Table 1).
Aer seng up the recycle ow rate, check the drain ow rate again and readjust it to the
approximate value obtained with the following formula:
EXAMPLE:
Assume feed water TDS = 6 g/l, t = 15 °C.
On Figure 2.1 MO6500BWTSS ow capacity chart the following approx. values will be found:
Permeate ow rate = 300 l/h ≈ 5 l/min
Recovery ≈ 55% = 0.55
Using the above formula, Target Drain Flow Rate = 300/0.55 - 300 = 245 l/h ≈ 4 l/min
Therefore, the RO system has to be set up as follows:
1. Tighten Drain Flow Control unl Drain rotameter shows 4 LPM.
2. Tighten Recycle Flow Control unl Permeate rotameter shows 5 LPM.
3. Recycle rotameter ow rate depends on other factors and may vary signicantly, but should in most
cases be within the range specied in Table 1.
4. Verify that the Operang pressure does not exceed the maximum value of 25 bar.
5. Verify that the obtained Permeate Flow Rate and Drain Flow Rate are consistent with the Permeate
Recovery used in the calculaon.
Target Drain Flow Rate =
Permeate Flow Rate
- Permeate Flow Rate
Permeate Recovery
where the Permeate Flow Rate and Permeate Recovery values are to be found on the system
capacity graphs (from your raw water TDS and temperature) in Product descripon secon.