Friedrich Kuhl+ KEQ08A11A User Manual

52 PB
COMPONENTS TESTING
Fan Motor
Asinglephasepermanentsplitcapacitormotorisusedtodrivetheevaporatorblowerandcondenserfan.Aself-
resettingoverloadislocatedinsidethemotortoprotectagainsthightemperatureandhighamperageconditions.
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment with
power applied.
Failure to do so could result in serious injury or
death.
Figure 23
Blower/Fan Motor
Blower / Fan Motor Test
1. Determinethatcapacitorisserviceable.
2. Disconnectfanmotorwiresfromfanspeedswitchorsystemswitch.
3. Apply“live”testcordprobesonblackwireandcommonterminalofcapacitor.Motorshouldrunathighspeed.
4. Apply“live”testcordprobesonredwireandcommonterminalofcapacitor.Motorshouldrunatlowspeed.
5. Apply“live”testcordprobesoneachoftheremainingwiresfromthespeedswitchorsystemswitchtotestintermediate
speeds.Ifthecontrolisinthe“MoneySaver”modeandthethermostatcallsforcooling,thefanwillstart-thenstopafter
approximately2minutes;thenthefanandcompressorwillstarttogetherapproximately2minuteslater.
Capacitors
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or
installation. Extreme care must be used, if it
becomes necessary to work on equipment with
power applied.
Failure to do so could result in serious injury or
death.
Manymotorcapacitorsareinternallyfused.Shortingtheterminalswillblowthefuse,ruiningthecapacitor.A20,000ohm2
wattresistorcanbeusedtodischargecapacitorssafely.Removewiresfromcapacitorandplaceresistoracrossterminals.
Whencheckingadualcapacitorwithacapacitoranalyzerorohmmeter,bothsidesmustbetested.
Capacitor Check with Capacitor Analyzer
Thecapacitoranalyzerwillshowwhetherthecapacitoris“open”or“shorted.”Itwilltellwhetherthecapacitoriswithinits
microfaradsratinganditwillshowwhetherthecapacitorisoperatingattheproperpower-factorpercentage.Theinstrument
willautomaticallydischargethecapacitorwhenthetestswitchisreleased.
Capacitor Connections
Thestartingwindingofamotorcanbedamagedbyashortedandgroundedrunningcapacitor.Thisdamageusuallycanbe
avoidedbyproperconnectionoftherunningcapacitorterminals.
Fromthesupplylineonatypical230voltcircuit,a115voltpotentialexistsfromthe“R”terminaltogroundthroughapossible
shortinthecapacitor.However,fromthe“S”orstartterminal,amuchhigherpotential,possiblyashighas400volts,exists
becauseofthecounterEMFgeneratedinthestartwinding.Therefore,thepossibilityofcapacitorfailureismuchgreaterwhen
theidentiedterminalisconnectedtothe“S”orstartterminal.Theidentiedterminalshouldalwaysbeconnectedtothe
supplyline,or“R”terminal,nevertothe“S”terminal.
Whenconnectedproperly,ashortedorgroundedrunningcapacitorwillresultinadirectshorttogroundfromthe“R”
terminalandwillblowthelinefuse.Themotorprotectorwillprotectthemainwindingfromexcessivetemperature.
Dual Rated Run Capacitor Hook-up
Figure 702 (Blower)
Figure 703 Dual Rated Capacitor Hook-Up

Friedrich Kuhl+ KEQ08A11A Specifications

General

Brand	Friedrich
Model	Kuhl+ KEQ08A11A
Category	Air Conditioner
Language	English