WPC  brA`XG^{~ZY mǻĚoPqҺ&ePn5y$y;I:J[aʆٙbXp6H!,'0k&^J'L֡Fў{'I9˽!F->(z~CQ.Udu.ClATvhw# LOU*gD0T@gxPV3[ {ʎ ]:~>߇+d#*aD(!< w;.G!c_:77e_/U9~u J}iFj2*4jYdOa{Ϲ&P$peb) !Ȳ"_rȒ1Eq ZhUN0fv3kjF=D-4wț+*+\1`-#vUN7 % 0uU::IwQ4Ui mkNJ   ^ b b b b b b b b b b b b b b b b b b b b b An 0   D+ 0K hp deskjet 3600 seriesTX,,,,TX0  Z6Times New Roman RegularX(M$ )XX1AZ"Arial Regular3|x '\0@8P!0~ULevel 1Level 2Level 3Level 4Level 5Level 1Level 2Level 3Level 4Level 5Level 1Level 2Level 3Level 4Level 5Level 1Level 2Level 3Level 4Level 5Level 1Level 2Level 3Level 4Level 5a(0  (,+&OLE 2.0 Box <=8C HKKKK(i3; $ !^XX  'dxd( $ Figure  1  !^XX  _9 "8^  Ӏ33 _L.Q._ԀJOHNSTONREPAIRSHOP,INC .339f889 "  89f  107MADISONSTREET3345661373 `~ s  ӀTROY,AL360812523 5 May25,2004     Mrs.LibbyWalker <Z 609WilsonDrive  Troy,Al36079   DearMrs.Walker:  6  Thankyouforcallingonustoserviceyourairconditioning.    OnTuesday,wecheckedtheupstairsunitandfoundthatitwasverylowonrefrigerant.Because    oftimeconstraints,wemadeonlycursorychecks,findingaprettybadleakatthevaporline   connectionport.Anattempthadbeenmadetorepairthisleakbyusingpipedopeonthethreads b  oftheportcap,arubber_gasketed_Ԁfingertightflarefitting.Wehavefoundthistobeafruitless 7  exercise.Wereplacedthecapwithawrenchtightbrassflarecap.Wealsoreplacedtheliquid   lineportcap.   Welookedattheindoorcoil(intheattic)andsawnovisibleevidenceofleaks,butdidnotmakea  leakdetectorcheck.Removalofthepanelsontheindoorunitisawkwardbecausethefastener  screwsarebelowthetopoftheauxiliarydrainpan.Wewereabletoseethattheindoorcoilis c rustedbadly.Theremaybealeak,butthereisnovisiblesignofoil,usuallypresentwhenthereis 8 arefrigerantleak.Wewouldliketobeabletospendmoretimeandmakeamorethoroughleak  search.  Weaddedrefrigeranttothesystemandcleanedthedrainline,astheindoorunitdrippanwasfull  ofwater.Iftherefrigerantleaksoutagainthisseason,wewillmakeamorethoroughleaksearch  andreplacetherefrigerantlost.Wehaveencounteredseveralleakingcoilsthisyear.Thisis d possiblybecauseofchangesinengineeringpracticeinthe80'sand90'swhichresultedinuseof 9 thinnertubingandhighvelocityrefrigerantflow,togetherwithinternal burringofthecoil_refrige_Ԅ  rantpassagesinanefforttoincreaseequipmentthermalefficiency.   Ifacoilreplacementisindicated,costswouldbeconsiderable.Itmightbeadvisabletoreplace " theentireindoorsection. # Butletusbeoptimistic:maybethesimplerepairswemadetodaywillbeallthatisrequired. :% Again,thankyouforthecall.  '    `     h   Verytrulyyours !)    `     h   THOMASJOHNSTON f#+ \CH\WALKER,_LIBBY\040526_ $ -