Owner manual
ULTRA-CUT 100 XT
A-72 APPENDIX Manual 0-5272
2. Fans are powered by 230 VAC. The 230 VAC for the fan(s) is switched by the MC2 control relay (except the
AC200XTwherethefan(s)ispowereddirectlyfromtheT1transformeratJ13).
Art # 12311
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
J8
1
5
3
2
4
Fan Bias Control
K4
MC2
Fan Control
(160)
(161)
SA3
ARC_SUPPRESSOR
D24
24 VAC
Relay PCB
230 VAC from T1
MC2A
MC2B
To J70-2
To J70-3
(69)
(70)
(70)
(65A)
(70)
(69)
1
2
3
J73
(64A)
CHASSIS GND
1
2
3
J72
C4
FAN1
R
R
BK
BN
BL
1
2
3
4
J13
TP1
TP2
CCM I/O PCB
To test fan relay jump TP2 to TP1.
+24
J4-19
3. Checkfor230VACateitherofthefanconnectors,J72&J73.Itmayalsobemeasuredattherearpanelcon-
nectorJ70fortheHE400XTfan.
a. Ifthefansarenotgetting230VAC,measurefor24VAConthecoilofMC2.Ifpresentandtherelay
contactsaren’tclosedtherelayisdefective.Note,thecoilisrectiedsoyouwon’tmeasurecontinuity
ofevenagoodcoil.
b. If24VACisnotontheMC2coilcheckforD24ontherelayboardbeingON.Ifit’son,theRelayboard
shouldbeprovidingthe24VACsoifit’snottheRelayboardmustbedefective.
c. IfD24isnoton,measureontheCCMI/OboardbetweenTP2andthecommonatTP1.Itshouldbelow,
nearzerovolts.IfnottheCCMisprobablydefective.JumperTP2(I/Oboard)toTP1.Ifthefansnow
come on replace the CCM.
d. IfjumpingTP2toTP1doesnotturnthefansonthentheRelayboardorthe40pinribboncablepin19
is at fault.
404 Coolant System Not Ready
WhenpowerisappliedtothesystemwithExternalPlasmaEnablesatisedandPlasmaPowerSupplyEnabled
(switch on 2010 or TSC 3000), assuming there is enough coolant in the tank, after some initial tests taking about
15-20seconds(seemanualsection4fordetailsoftheStart-UpSequence)thepumpwillstart.Coolantwillbe
pumpedthroughthesystem.FlowismeasuredbytheFS1owswitchplacedinthetorchcoolantreturnpath
justbeforetheradiator(seeplumbingdiagram).Iftheowdoesn’treachatleast0.75GPM(2.8lpm)within
4minutesitwillsetthe404fault.Thereasonforthe4minutesisanewdrysystemespeciallyonewithlong
torch leads will take some time before the leads, hoses, radiator and cold plates are full of coolant. More coolant
mayhavetobeadded.Onasystemthathasbeenrunbeforeitnormallytakesonlyafewsecondstoestablish
properow.Inanycasethepumpwillrunfor4minutesbeforesettingthe404fault.
Firstdetermineifthepumpmotorisrunningandifsoisthereanycoolantowing.Withtherightlowerside
panelremovedtouchthepumpandfeelforvibrationtoindicateifthemotorisrunning.Observetheclear
coolanthosestoseeiftheyarefullofcoolant.Therearetwohosettingsonthebackofthetank.Theupper
oneisthecoolantreturn.Removethetankllercover.Youshouldseeafairlystrongstreamofcoolantfrom
thattting.Thelowerttingisfromthepumpbypassvalve.Ifthepumpisoperatingsomecoolantmaybe
exitingthatttingaswell.Ifthesettingsarebelowthecoolantlevelyoumayhavetodrainoutsomeofthe
coolanttoseethis.Ifastrongstreamisexitingthebypass(lower)ttingbutnothingfromtheuppertting,
youprobablyhavesomekindofblockage.