WL400ManualPage16–Revision:5‐2‐2018
HOTTANKDESCALINGINSTRUCTIONS
Thehottankrequiresremovalofmineraldeposits(descaling)onaregularbasis.Typically
descalingshouldtakeplaceevery6to12monthstopreservethelong‐termhealthofyourunit.
Usenon‐toxiccleanersuchasScaleKleen,DEZCAL,20%CitricAcidSolution,orUndilutedVinegar
Solutiontoremovemineraldepositsasdirectedbythemanufacturerdependinguponfiltration
andlocalwaterconditions.
Descalingisanimportantprocessthatremovescalciumdeposits,orscale,thatcanbuildup
insideatankovertime.Calciumandscaleisnon‐toxicbutleftunattendedwillhinderyourunit’s
performance.
WARNING!PERSONALPROTECTIVEEQUIPMENTREQUIRED.Alwaysensureproper
ventilationanduserubberornitrileglovesandeyeprotectionwhenusingchemicals.Referto
MaterialSafetyDataSheetforspecificrequirementsofeachproduct.
CAUTION!STAINLESSSTEELTANKDESCALING.
Thehottankismadefromstainlesssteel.Ensuredescalingsolutioniscompatiblewithstainless
andalwaysflushtheunitcompletely.Disposeinanenvironmentallysafemanner.
MaterialsNeeded:
PersonalProtectiveEquipment.RubberorNitrileSafetyGlovesandProtectiveEyewear
PhillipsScrewdriver
TemperatureGauge
WaterPitcherorContainertocollectwaterfromthefaucet
5‐galloncontainerordrainbasin
CitricAcidBasedCleaner
¼”PlasticTubing,atleast4feetinlength,andassorted¼”quickconnectfittings
SanitizingCartridge
FoodColoring
1. Putdescalerperdirectionsand3dropsoffoodcoloringintothedescalingcartridge.
2. Connectdescalingcartridgetotheinletwatersupplyandconnecttoinletbulkheadfittingonthe
backoftheunit.TurnonWaterSupply.
3. SelectHotWateranddepresstheMainDispensingButtonontheFrontControlPaneluntil
descalingsolution(coloredwater)comesoutofthefaucet.Containeranddrainbasinwillbe
requiredtocatchwaterfromthefaucet.
4. Turnoffwatersupplyandremovesanitizingcartridgefrominletwatersupply.Reconnectwater
supplytoinletfitting.