Tempcool TC-120B4 - Preventive Maintenance; Filter and Coil Care; Blower and Motor Maintenance

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intheONpositionbeforethedisplay
appears.
9. BasicThermostatOperation:
a. SettheHeat/Coolmode(rightbutton)
toCOOL.Therearefourchoices;OFF,
HEATING,COOLING,AUTO.OnlyOFFor
COOLshouldbeusedonthisunit.
WhensettoONtheremaybea2
minutedelaybefore
thecompressor
andcondenserfanstart.Thisisto
protectthecompressorfromshort
cycling.
b. SettheFanmode(leftbutton)to
AUTOMATICorON.IntheAUTOMATIC
modethesupplyblowerwill startwhen
thereisacallforcoolingandstopwhen
thereisnodemand.Inthe
ONmode
thesupplyblowerwillruncontinuously
andthecompressorwillcycleonand
offinresponsetothethermostat
temperature.
c. Adjustthetemperaturesetpointusing
theup/downarrowslocatedinthe
middleofthecontrolkeys.
10. TurntheunitONbyturningtheOFF–ON
switchtotheonposition.Theair
conditionerisnowunderthecontrolofthe
remoteroomthermostat.SeetheRS‐4110
thermostatuser’smanualattheendofthis
manualfordetailedinformationon
operatingthethermostat.
PREVENTIVEMAINTENANCE:
TEMP‐COOLair‐conditioningunitsprovidehigh
performanceandreliabilitywithaminimum
amountofmaintenance.Toprolongthelifeof
theunitandinsureahighlevelofperformance,
performregularmaintenanceasdescribed
below.
Therefrigerationandelectricalcircuitsof
thesystemshouldbeservicedbyqualified
techniciansonly.
Alwaysdisconnecttheunit
fromitspowersupplywhenperformingany
formofservicerequiringtheremovalof
grillesorpanels
Filters:
Dirtyfilterscanrestrictairflowcausingtheunit
tooperatewithareducedefficiency.Inspect
thefilterseverysixweeksormorefrequently,
whenoperatinginadirtyenvironment.Replace
thefilterswhendirtywithanequivalentfilter.
Donotattempttocleanthefiltersoroperate
theunitwithoutfilters.

Supply/Returnairfilterscanbeaccessthrough
thepanelwiththereturnairconnectiononit.
Openthepanelandslidethefiltersout.
Replacebothfilterswithtwo25”x25”x2”
mediumefficiencypleatedmediafilter.Make
surethefiltersareinsertedwiththeairflow
indicatorsin
theproperdirection.
Condensercoilfiltersshouldbeusedif
operatingtheunitinadirtyarea.Anexternal
filterrackisavailableasanaccessoryand
suitablefiltermediashouldbeselectedbased
ontheapplicationandlocationoftheair
conditioner.
CoilCleaning:
Ifthecoilsbecomedirty theycanbecleaned
usingavacuumfollowedbycompressedair.
Vacuumthefaceofthecoilwheretheairenters
thecoil.Mostofthedirtwillbeonthisside.Use
compressedairtoblowanyremainingdirtout.
Workfrombacktoprevent
drivingthedirt
furtherintothecoil.Keepingcleanairfiltersin
placewillgreatlyreducethefrequencythat
coilsmustbecleaned.
BlowersandBlowerMotors:
Theblowerandblowermotorssuppliedwith
theseunitshavesealedbearingwhichare
lubricatedatthefactoryandrequirenofurther
service.
TheV‐beltdrivesusedontheblowerrequire
additionalattention,howevertoinsurethatthe
beltsanddrivesareingoodcondition,properly
aligned,andtensioned.Start
bycheckingthe
drivesforproperalignmentandtensionby
measuringthedeflectionatthecenterspanof
thebeltunderagivenpressure.Thecondenser
fanbeltshouldhavea1/2inchdeflectionwith5
poundsofforceandtheevaporatorfanbelt