DoAll C-4033NC - Trouble Shooting

 38

TROUBLESHOOTING

Repairandadjustmentproceduresshould
bemadeonlybyexperiencedmaintenance
personnel,orbyaDoALLservice
representative.Referencetothemachine’selectrical
andhydraulicschematicswillbehelpful.

ERRORMESSAGES
Followthepromptswhenanerrormessageappears.
MACHINEWILLNOTSTART
1. CheckthatthedisconnectswitchisintheON
position.
2. TheEmergencyStopbuttonneedstobereset
(rotatethebuttonheadclockwise).
3. Seeifthemainfusesand/orcircuitbreakershave
trippedorburnedout.
4. Makesurebothbandwheeldoorsareclosedand
theinterlockswitchesareengaged.
5. Checkthesplashscreeninfrontofthemachineto
beinpositionandtheinterlockswitchisengaged.
6. Pushthemotorstartoverloadresetbuttonsinthe
electricalcabinet.Ifoverloadtrippingoccurs,
locateandcorrecttheproblem.
7. Checkthecontroltransformerforpower.
8. Checkthehydraulicmotorandwiring.
9. Checkthestarter,relaycoilsandcontactsfor
faultyoperation.
10. Haveanelectricalservicepersoncheckthe
continuityofthestartingcircuit.
MACHINESTARTS,BUTWON’TCONTINUERUNNING
1. Thesawbandisbrokenortoolongandis
activatingthebandbreakproximityswitch.
2. Checkthesplashscreeninfrontofthemachineto
beinposition.
3. Checktoseeifthebandwheeldoorsareclosed
(thebanddrivemotorwillnotstartunlessboth
wheeldoorsareclosed).
4. Thesawheadhasnotclearedtheheaddownlimit
switch.Pushthesawheadupbuttonandstartthe
hydraulicpump.
5. Theout‐of‐stocksensorhasbeenactivated.
SAWBANDSTALLSDURINGACUT
1. Decreasesawheadfeedingpressure.
2. Checktoseeifdrivebelttensionisadequateto
resist“cogging”underload.
3. UseaTensigagetocheckforpropersawband
tension.
4. Checkforproperoperationofthebandtension
selector.
BLADETOOTHGULLETSARELOADING
1. Useacoarserpitchsawband.
2. Increasethebandspeedsetting,ordecreasethe
feedpressuresetting.
3. Checkforimpropercoolantapplication.
4. Checkthepositioningofthebandbrush.Replace
thewirebrushofnecessary.
SAWBANDSQUEAL
1. Thelead‐in/exitrollersare:notcontactingthesaw
band;(b)positionedtootightagainstthesaw
band.
2. Checkfordefectivelead‐in/exitrollerbearings.
SAWBANDVIBRATION
1. Checkforadullordamagedsawband.
2. Incorrectbandspeedorfeedpressuresettingis
used.
3. Checkforincorrectsawbandpitch
4. Coolantmixtureisweak,orincorrectcoolantis
beingused.
5. Stockpieceisnotbeingfirmlyclampedbythevise
jaws.
6. Checkforwornorimproperadjustedsawguide
inserts.
7. Checkforawornsawguideback‐upbearingor
carbide,orlead‐in/exitrollerbearing.
8. Checkforincorrectsawbandtension.
PREMATUREBLADETEETHDULLING
1. Bandspeedand/orfeedratetoohigh.
2. Checkforfaultystock:heavyscale,inclusions,hard
spots,etc.
3. Stockanalysisiswrong.Thiscanresultinincorrect
cuttingrecommendation.
4. Coolantisnotcoveringthesawbladeproperly.
5. Checkforsawbandvibration.
6. Checkforchipwelding,orachippedbladetooth
lodgedinthecut.