PRODUCT MANUAL - Rada

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Symptom5. Fluctuating orreduced flow rate.Normal functionof mixing valvewhen operatingconditions areunsatisfactory.6. Blendtemperature driftor temperaturecycling.7. Maximum blendtemperaturesetting too hot ortoo cool.8. Water leakingfrom the DMV.9. LED’s areflashing on thecontrol panel andthe DMV will notactivate.10. The DMV keepsswitching OFFbefore thecompletion of theprogrammed timeflow period.Cause/Rectificationa. The inlet/outlet fittings may be restricted : check the inlet/outlet strainers, refer to PLANNED MAINTENANCE.b. The water outlet pressure is low : check the flow rate isabove the stated minimum, refer to SPECIFICATION.c. Fluctuating flow : make sure that dynamic inlet pressuresare within specification, refer to SPECIFICATION.d. Fluctuating water temperature : make sure thatinlet temperature differentials are sufficient, refer toSPECIFICATION.a. Refer to symptoms 4 and 5.b. Hot water supply temperature fluctuation : check andrectify.a. Incorrect maximum temperature setting : refer toCOMMISSIONING.Warning! Isolate mains electricity and water supply.a. Check that the connections are secure.b. Seal(s) worn or damaged on the inlet/outletconnections : obtain service pack and renew allseals.c. Internal leakage : unit requires overhaul.a. An error has been diagnosed, refer to Self-diagnosticErrors (following table).a. Blend temperature too hot : Reset the DMV by switchingthe power supply to the DMV OFF, then ON.b. Make sure that the inlet temperatures are withinspecification, refer to SPECIFICATION.If the fault has not been rectified, contact your Local Agentor Customer Care.16
Self-diagnostic ErrorsError code is displayed by a combination of lit LED’sAll three LED’s flash at the same timeSymptomorCause/RectificationThe Control Panel and the DMV are not compatible.a. DMV W or B requires CP W: check and rectify.If the symptom has not been rectified, contact yourLocal Service Engineer or Agent.Outlet Temperature is too high or Thermistor fault.a. The inlet/outlet fittings may be blocked: check the inlet/outlet strainersb. Cold water supply failure: reinstate supplyc. Safety circuit may require resetting: enable the controlpanel with the magnetic key to reset.If the symptom has not been rectified, contact yourLocal Service Engineer or Agent.Thermistor fault.a. Contact your Local Service Engineer or Agent.The Stepper Motor is stuck, the motor belt is broken or theMixer assembly is jammed.a. Contact your Local Service Engineer or Agent.The Mixer assembly is jammed or very stiff.a. Contact your Local Service Engineer or Agent.Any othercombinations.A fault has occurred on the Control PCB.a. Memory may require resetting: switch the power supplyto the PSU, OFF then ON.If the symptom has not been rectified, contact yourLocal Service Engineer or Agent.17
Page 2: ContentsDESCRIPTION................
Page 6 and 7: Additional Information for Type 2 a
Page 8 and 9: OutletHot inletCold inletMounting o
Page 10 and 11: RADA SENSE (DMV)Template123PSU Cabl
Page 12 and 13: Maximum Temperature SettingThe maxi
Page 14 and 15: CLEANINGThe Rada Sense Control Pane
Page 18 and 19: PLANNED MAINTENANCEMalfunction of t
Page 20 and 21: StartMeasure and record supply temp
Page 22 and 23: A463.93463.03AA463.04463.28A464.014
Page 24: CUSTOMER CAREGuarantee of QualityKo

PRODUCT MANUAL - Rada

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