Howe 2000-RLE - Page 25

StartUp&Operation
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25
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ThePhotoelectricsensors,orPhotoEyes,shoot
aninfraredbeamacrosstheopeningoftheIce
Flaker.
Ifthisbeamininterruptedformorethan15
seconds,theIceFlakerwillbegintheOff‐Delay
Cycle.Thispreventsicefromfillingintotheice
makingareaanddamaging
internalparts.
TheIceFlakerwillreturntoNormalOperation
whentheinfraredbeamisre‐established,
providedtheOff‐DelayCyclehascompleted.
IftheIceFlakerwaspurchasedwithoutanIce
BinthePhotoEyeswillbeshippedlooseand
needtobeproperlymountedbytheinstalling
contractor.
PleasecontactHoweforfurther
information.
WaterorMoistureinMolexPlug
IftheMolexplugforeithertheEmitteror
Receiveriswetorhasmoistureinit,shake
wateroffpluganddryproperly.
Molexplugmustbere‐packedwithDi‐electric
greaseeverytimeitis
unpluggedtomaintain
waterresistance.
CorrectWiringArrangement
TheEmittershouldhaveonlytheblue&brown
wiresconnectedtoit.Thereshouldnotbeany
pininthecenterpositionontheMolex
connectorattachedtotheEmitter.
TheReceivershouldhavetheblue,brown&
blackwiresconnected.
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CorrectVoltage
WithLevelControlRelaypluggedinandpower
toIceFlakeron,unplugEmitterandReceiver.
Useavoltmetertoverify24voltsacrossblue
andbrownpins.Alternativelyyoucancheck
terminals#1and#10ontheLevelControl
Relay.
If24voltsisnotpresent,the
LevelControlRelay
haslikelyfailedandneedstobereplaced.
SequenceofOperation
ThereareLight‐EmittingDiode(LED)indicators
ontherearofboththeEmitter&Receiver.
TheEmitterhasagreenLED,whichis
illuminatedwhenevertheIceFlakerhaspower.
TheReceiverhastwoLEDs.
ThegreenLEDis
alwaysilluminatedwhenevertheIceFlakerhas
power.TheamberLEDisilluminatedwhenit
“sees”theinfraredsignalfromtheEmitter.
DuringNormalOperation,allLEDsshouldbelit.
TheLevelControlRelay(LC1)shouldopenthe
SolenoidValve,andtheIceFlakershouldbegin
making
ice.
Whentheinfraredbeamisblock ed,bothgreen
LEDswillremainlit.However,theamberLED
ontheReceiverwillgoout.
After15secondsofthebeambeingblocked,
theSolenoidValvewillde‐energizeandtheOff‐
DelayCyclewillbegin.
Dependingupontheadjustmentofthe
Off‐
DelaySetting,theDriverMotorandWater
Pumpwillcontinuetooperateforbetween2–
30minutes.
IfthePhotoEyesdonotoperateinthisfashion,
pleaseconsulttheTroubleshootingsection.
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