Sierra Series 830/840/860 Side-Trak™ and ... - Sierra Instruments

More documents

Recommendations

Info

Series 830/840/860 Instruction ManualChapter 5 TroubleshootingWarning!Always remove main powerbefore disassemblingthe transducer.Caution!Only qualified personnelshould perform troubleshootingprocedures.Chapter 5 TroubleshootingThis chapter is provided to help locate the cause of a transducerfailure. It is not intended to be an all inclusive repair manual. Inthe case of major repairs, the unit should be returned to the factoryfor service. Contact Sierra Customer Service for returnshipping instructions (page 5-4).When you suspect that the transducer is not operating correctly,there are a few simple checks that can be made before dismantlingthe unit:1. Make certain that there are no leaks in the line.2. Check that all cables are connected and are in good condition.3. Verify that the power supply is of the correct polarity andvoltage and properly connected to the transducer.4. For controllers, check for adequate pressure differential acrossthe controller. Check the valve voltage.5. Double check connector pin outs when replacing anothermanufacturer’s transducer.After verifying the factors above, follow the troubleshooting proceduresoutlined on the next page.IM-83/84/86-H 5-1
Chapter 5 TroubleshootingSeries 830/840/860 Instruction ManualFlow Meters and Flow Controllers with Electromagnetic ValvesProblem Possible Cause SolutionNo outputUnit will not zeroController does notrespond to set pointFlow does not match set pointReads full scale with no flowor with valve shutOut of calibrationClogged sensorPCB defectiveInlet filter screen cloggedGas leakApplication requires high pressure andnon-horizontal mountingPCB defectiveLow or no gas pressureFaulty cable or connectorSet point is below 2% of full scaleNo gas pressureInlet filter screen cloggedOut of adjustmentDefective sensorGas leakDirty or clogged sensorChange in composition of gasGas leakPCB defectiveLFE dirtyInlet filter screen cloggedIncorrect inlet conditions (high flow andNPT models)Clean or replace sensorRepair or replace PCBClean or replace screenFind and correct leaksRe-zero transducerRepair or replace PCBSet correct gas pressureCorrect or replaceIncrease set point or disable autoshut off circuitSet correct gas pressureClean or replaceAdjust R22 balance on 840 models,consult factory for othersReturn to factory for replacementFind and correct leaksClean or replace sensorSee K-factory tablesFind and correct leaksRepair or replace PCBClean LFEClean or replace screenRe-plumb transducer correctly5-2 IM-83/84/86-H
Page 1 and 2: Sierra Series 830/840/860Side-Trak
Page 3: Series 830/840/860 Instruction Manu
Page 6: Table of ContentsSeries 830/840/860
Page 11 and 12: Chapter 1 IntroductionSeries 830/84
Page 13 and 14: Series 830/840/860 Instruction Manu
Page 29 and 30: Chapter 3 OperationSeries 830/840/8
Page 38 and 39: Chapter 4 MaintenanceSeries 830/840
Page 56 and 57: Appendix ASeries 830/840/860 Instru
Page 70: Appendix B SpecificationsSeries 830

Sierra Series 830/840/860 Side-Trak™ and ... - Sierra Instruments

Create successful ePaper yourself

Delete template?

Save as template?