WaterLogic WL290 Istruzioni operative

WL290Manual Page57Revision9‐3‐2019

HOTWATERTROUBLESHOOTINGINDEX



1. HotWaterisnotHot85°C(185°+/‐5°F)



IncludedinthissectionaretheTwoResettableHotTankOverloads(HighLimitSafety)

Instructions.



1. HotWaterisnotHot85°C(185°+/‐5°F)



TheHottemperaturesetpointis85°C(185°F)andiscontrolledbyathermistorinthewellof

theHotTank.



TherearetwoHotTankOverloadDevices(HighSafetyLimit)onthesideoftheHotTankthat

willtriptopreventdamagetotheunitifthetankisdryheated(turnedonwithoutwaterin

it).



Ittypicallytakes10minutesforthe500Wtoheatthe1.6Literofroomtemperature

(ambient)watertothe85°C(185°F)setpoint.



PossibleReason Solution

Nopowertoheaterelements

CheckthattheRedHeaterandCompressor

switchison.



TurnRedHeaterandCompressorSwitchon.

I=ON

HotTankOverloadDevices

(HighSafetyLimit)tripped



HotTankOverloadDevices

(HighSafetyLimit)isasafety

featuretoensurethetankdoes

notoverheat.

HotTankOverloadDevices(HighSafetyLimit)will“click”

whenpushed.TheHotTankOverloadDevices(High

SafetyLimit)areautomaticallyresetwhenpressed.



SeeResetting HotTankOverloadDevices(HighSafety

Limit)Instructionsthatareincludedfurtherbelowinthis

TroubleshootingSection

HotTankOverloadDevices

(HighSafetyLimit)“open”on

HotTank

TurnPoweroff.



CheckOHM’sresistanceacrossterminalsoneachofthe

HotTankOverloadDevices(HighSafetyLimit)separately.

Goodcomponentswillindicateaclosedcircuitorzero

OHM’sonthemeter.



Replacecomponentsasnecessary.

Looseorimproperlyconnected

wire(s)totheheatingelement/

hottank.

Visuallyinspectwireleadsgongtothehottank;confirm

properconnectionstotheheatingelements.



Hottanklifeis3‐5years,dependingonusage.



WL290Manual Page58Revision9‐3‐2019

*Typically,dealersswapoutthehottankatsite,takeback

totheshoptorepair.

HeatingCoilNotWorking

TurnPoweroff;Drainhottank;Usemulti‐metertocheck

heaterelementforapproximately26OHM’sresistance.



Hottankmustbeemptyifyouarecheckingforcontinuity.



ReplaceHotTankasnecessary.





WL290Manual Page59Revision9‐3‐2019

RESETTINGTHETWOHOTTANKOVERLOADDEVICES(HIGHLIMITSAFETY)



 

1.



TurnoffRedHeaterandCompressorPowerSwitchO=OFFonrearofunit.

2. UnplugthePowerCordfromrearofunit. 

3.



Remove4PhillipScrewsfromtheAccessPanelonrearofunit

andLowerAccessPanel. 

4.



LocateprotectivemetalboxonrearofHotTank.Pushdownontopofmetalboxto

accessthetwoOverloadResetDevices.



5.

PresstheOverloadResetDevices.



6. Reattachthemetalboxbydepressingthetopflapofthemetalboxsoitsnapsbackinto

itsoriginalpositionontheHotTank.

WL290Manual Page60Revision9‐3‐2019

7.



ReplacetheAccessPaneland4Philipsscrews. 

8. PluginthePowerCord.

9. MakesurethehotandcoldtanksarefilledwithwaterBEFOREturningontheRed

HeaterandCompressorPowerSwitch



CAUTION!NEVERTURNONHEATERBEFOREFILLINGHOTTANK.

RedHeaterandCompressorPowerSwitchmustbeintheO=OFFposition

whiletheHotTankisempty.Damagecouldoccurwithinoneminuteand

theoverload(highlimit)willrequiremanualresetifheateristurnedon

withanemptyHotTank.



10. Verifythecoolerisfullyoperationalbeforeinstallingitatthecustomers’site.





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