GE Merlin Application Manual

Also see for Merlin: Installation and maintenance manual Installation and maintenance manual Installation and maintenance manual

Contents

COMMERCIAL AND INDUSTRIAL APPLICATIONS 31Rev CTROUBLESHOOTINGIssue Possible Cause Corrective ActionLow permeate flow 1. Net driving pressure and/orinlet temperature too low.2. Plugged prefilter.3. Scaled or fouled ROmembrane.4. Faucet not adjusted properly.5. Plugged postfilter.6. Leak or kink in permeate line.1. Measure and record actual flow ratefrom faucet.2. Determine net driving pressure. Refer topage 6.3. Using net driving pressure and inlettemperature, compare actual flow rateto predicted flow as shown in Table 1.4. Reduce pressure losses due to tubing,elevation, and fittings.5. Install booster pump for applicationswhere an increase in inlet pressure willprovide acceptable flow according toFigure 2.6. Replace plugged prefilter. Considersediment prefilter for non-chlorinatedapplications.7. Replace membrane elements.8. Adjust faucet t-bar setting as tight aspossible without causing leaks from thefaucet.9. If flow into the postfilter is acceptable,replace postfilter.10. Find and repair leak or kink.Concentrate waterruns to drain afterfaucet shut off1. Pressure created by trappedair in the system affectingoperation of the automaticshut off valve.2. Clogged prefilter reducingpressure in permeate line.3. Leak in permeate linereducing pressure.1. Install postfilter or ASO cartridge.2. Inspect prefilter. Replace cloggedprefilter.3. Find and repair leak.