Transcription
Irrigation Tech IIELECTRICAL TROUBLESHOOTING
System TroubleshootingHydraulic IssueElectrical IssueSeehydraulicsectionMove tonext slide2
Checking, Finding and Fixing Controllers Buried wires and cables Electrical valves Wiring faults3
What We Can Use Electrical meter/ multimeter Irrigation system tester/ actuator Wire & valve locator/ toner Ground fault finderThese electrical tools are time-savers.They can turn a day of chasing anddigging into an hour of work.4
1. CHECK CONTROLLERTypical tasks e zonewiresCheck forwire faultsCOMMONLocate the wire path and faultsFind abreakCOMMONFind thevalveFind ashortTest thevalveValveSolenoidZone 1ValveSolenoidZone 2ValveSolenoidZone 35
Is controllerpowered?(date & timecorrect)Turn on thestation atControllerControllervolts atstationOK?At thecontrollerNLow Voltage IrrigationTroubleshooting ProcessTroubleshootcontroller ACpower, fuse**Or connect with3 9V batteriesYDisconnectthe stationwireLocate valvewith locatoror chatter*Testresistanceinto thestation wire*Test range 20‐60 ohms,depending on mnfrShortoropen?NLocate valve& check op**Operatevalve withtesterOperatevalve withbleedMost technicians arechasing problems as seenin this chart.YCheck forwiring groundfaultLocate cablepathInspect pathor use AframeIn the field6
The first step: Health check-upfrom the controller.1. Check the controller operation1. AC power in at 120 Vac2. 24 Vac into clock3. Rain sensor switch positioned off4. 24 Vac OK at Zone 1 when manuallyactivated2. Operate the zones from the clock3. Use a multimeter or tester to check the wiringfrom the controller.7
Find it, Fix it.What you will be dealing with. Dead controller: AC power, fuseDamaged/ loose wiring Cut Skinned Poor connectionUnknown zone assignmentsBad splices Open Corroded open (wirenut bad) Wet LooseBad solenoid (open or short)Bad valveLine obstructions- see hydraulicsSprinklersystemstore.com8
Electrical meters are an all-around toolwhen working with electrical systems.24 VacVOLTAGE120 VacVOLTAGE24 VacRESISTANCE20-60 ohms*200 mA acCURRENTElectrical circuits in irrigation and lightingare low-voltage and not generallyhazardous.*Varies bymanufacturer9
Is controllerpowered?(date & timecorrect)Turn on thestation atcontrollerControllervolts atstationOK?Troubleshooting ChartNTroubleshootcontroller ACpower, fuseElectrical ToolsYDisconnectthe stationwireLocate valvewith locatoror chatterTestresistanceinto thestation wireShortoropen?NOperatevalve withtesterOperatevalve withbleedLocate valve& check opYCheck forwiring groundfaultLocate cablepathInspect pathor use Aframe10
The Electrical Control System ArrangementThree‐valve manifoldin a valve boxOther electricallyoperated valvesIrrigation Controller11
The parts of the locating process.ReceiverAntennaGround StakeLocator/ TransmitterHead of Traced Cable12
Connecting aLocatorOPERATINGCommonLocator TransmitterValve 2Valve 1WIRE TRACKINGGround Stake(Leave Open)CommonValve 2Valve 1VALVE CONFIRMCommonValve 2Valve 113
The session will now divide into two groupsDEFEATING ELECTRICAL ISSUES14
A BIG Thank YouContributors Jim Carefoot, Armada Technologies Tony Acosta, Agave Environmental15
Electrical meters are an all-around tool when working with electrical systems. 120 Vac 24 Vac 24 Vac 200 mA ac VOLTAGE 20-60 ohms* RESISTANCE CURRENT VOLTAGE Electrical circ
