Airtec RO Plus l - Plus

59
8.8 RO Plus™
8. Service
Measure conductivity in permeate tank. • Water sample is taken out at designated water tab on the pump.
• Let the water run for 1 min.
• Flush the test tube.
• Follow the instructions for the supplied conductivity reader.
Measure production on each membrane individually. • Stop the RO system by the fuse..
• Take off hose between membrane and permeate tank at the tank.
• Install flow reader.
• Start up RO system.
• Note the flow.
•
Please notice – do not do the reading during rinse cycles, 45 sec.
• Repeat this for each membrane.
Measure drain flow during production. • Stop the RO system by the fuse.
• Take the drain hose and install the flow reader.
• Start RO system.
• Note the flow.
•
do not do the reading during rinse cycles, 45 sec.
Calculate the drain %. • Add the production flow from all membranes together.
• Use the formula to calculate the drain %.
- With softener drain % > 30 %
- Without softener drain % > 50 %
• If the drain % is below the required level, then adjust the drain flow and test
again, see section 6.6 Adjust drain %.
Check that the permeate tank is clean. • Take the lid of the tank and check visually if the tank is clean.
• If the tank is not clean, clean the tank with warm water or suitable desinfectant.
Check functionality of the production pump when the RO is
producing permeate.
• Check that the membrane pressure pump is running the right way.
• Check working pressure, should be 10 to 15 bar.
Check functionality of the booster pump from the tank. • Starts at 1,5 bar.
• Stops at 3.5 - 4 bar if there is not water requirement.
Check solenoid valves • Solenoid valve on water inlet is checked by:
- Shutting down the RO system.
- The pressure on water should drop to 0 bar.
• Read on the pressure gauge.
• Solenoid valve on rinse water is checked by starting the RO with an empty tank:
- Push reset for 15 sec. see that the rinse solenoid valves opens .
- The system will start with a rinsing cycles.
- The flow should be higher then normal operation flow to drain.
- After 60 seconds the rinse cyclus is done and the flow should drop to the
set flow value.
- If the flow does not drop the solenoid valve is defect.
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