Barnstead|Thermolyne EASYpure D7421 Installation, Operation & Service Parts Manual
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Contents
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38TroubleshootingProblem Possible Causes SolutionsEASYpure ROcompletely inactive(Controls not operating)No electrical power toEASYpure ROEnsure EASYpure ROpower cord is installedand connected to livepower.Blown fuses Check/Replace fuses.Refer toFuseReplacement forprocedure.No water flowing (lowpressure indicator lightilluminated)Feedwater supply valveclosedOpen feedwater supplyvalvePrefilter plugged Replace prefilterSolenoid valve not open Replace solenoid valveFeed pressure belowspecificationIncrease pressureIllumination of servicemembrane light.Decrease in % rejectionImproperly installedmembraneInsure membrane isinstalled properlyFouled membrane Replace membraneDecrease in systemproductivityDecrease in watertemperatureIf decline in flowrate isunacceptable installfeedwater temperaturevalve to elevate watertemperatureMembrane fouled Replace membraneLow incoming waterpressureEnsure prefilter is notblocked - Increaseincoming water pressureLow membraneoperating pressureIncrease operatingpressure |
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