Owner manual

ULTRA-CUT 100 XT
Manual 0-5272 APPENDIX A-71
Troubleshooting:
1. Firstnotewhetherthefaultisan“E”meaningit’scurrentlyloworan“L”meaningitwaslowbutisn’tnow.
Flowthatremainslowcouldindicateafailedcomponentorablockagesuchascloggedlterorpinched
hose.Italsomeansyoushouldbeabletomeasuretheowtodetermineifitisreallyloworthesensorhas
a problem.
2. Firstrecyclepower.Ifowisstillloworacomponentisdefectivethecodeshouldchangeto404.Goto
that section for further troubleshooting.
3. If after recycling power there is no code, continue cutting to see if it occurs again. Take note of when it oc-
curs,forexampleifit’swiththetorchatoneendofthetable,perhapstheleadsgetpinchedthere?Inany
casegotocode404sectionformoreinformation.
403 Coolant overheated.
TS1isalinearnegativetemperaturecoefcient(NTC)resistorsensorattachedtothebrassttingattheexitof
thebypassvalve.Herewedeterminethecoolantbeingsuppliedtothetorchisbelowtherequiredtemperature
whichiscurrently75degC(167F).Theradiatorisonthelowerrightsideoftheunit.Thefan(s)arebehindit
andblowoutthroughtheradiator.100A&200Aunitsmayeitherhave2smallerfansoronelargerone.The
300&400Aunitshaveonelargerone.
Fansoperateduringcuttingandfor4minutesafterlastcutthenshutoff.ExceptionisAC200XTwherethe
fansareonwheneverpowerison.Theexternalheatexchanger,HE400,fanisthermostaticallycontrolledsoit
onlycomesonwhencoolantisover60degC.Itwillshutoffwhentheotherfansshutoff.
Possiblereasonsforcoolantoverheated:
Coolantfan(s)failedordefectivefancontrolrelayMC2.
• Radiatornscloggedwithdirt.
• Dutycycleexceeded(ambienttemperatureabove40degCandoperatingathighdutycycle).
• Operatingwithanobjectplacedincloseproximitytotheairoutlet(rightsideoftheunit)orthefront
panel inlet openings.
• Operatingforextendedtimewithrightlowersidepanelremoved.
• DefectiveRelayboard.
• DefectiveCCM.
Troubleshooting:
1. Check for air blowing out of the unit. Remember, except for the AC 200 XT, the fans only run when CNC
STARTisappliedandfor4minutesaftercutting,youmayhavetoapplystartagaintorestartthe4minute
time.FansmaybeforcedonbyjumpingTP2ontheCCMI/OboardtoTP1(ground).
a. IfusingtheexternalHE400XTheatexchanger,optionalfor300A,standardfor400A,checkforairblow-
ingoutofit.NotethattheHE400XTfan,controlledbyathermalswitchintheHE400XT,onlyrunsif
thecoolantisover60degCandtheinternalfansareoperating.Withthe100&200Aifithas2fans
make sure both fans are operating by checking for air both top and bottom of the opening. The fans are
difculttosee,perhapsyoucanuseaninspectionmirror.Becarefulnottogetthemirrororyourhands
into the blades.