DoAll C-4033NC - Trouble Shooting

 40
TROUBLESHOOTING(Continued….)
INDEXWON’TRETURN
1. Checktoseeifthevisesolenoidisoperating.
2. Checkforincorrectadjustmentoftheindexforward
proximityswitch.
VISES WON’T TRANSFER AND SAW HEAD STAYS
DOWN
1. Checkforfaultyoperationoftheheaddownlimit
switch.
2. Checktoseeifthevisesolenoidisoperating.
SAWHEADWON’TLOWER
1. Thefeedratesettingistoolow.
2. Check the head clear limit switch for faulty
operation.
3. Checkifthesawheadsolenoidisoperating.
4. Checkforwasheadobstruction.
SAWHEADWILLNOTRISE,ORRISESSLOWLY
1. Checkifthesawheadsolenoidisoperating.
2. Checkforlowhydraulicsystempressurecausedby
blockage, clogged oil filter cartridge, or pinched
hose.
SAWHEADLOWERSERRATICALLY
1. Bleed air from the head lift cylinder. It may be
necessarytoriseandlowerthesawheadseveral
timestothoroughlybleedtheheadliftcylinder.
SAWHEADWON’TSTOPATTHECORRECTSTOCK
HEIGHT
1. Checkthestockheightsensingarm.Isitpositioned
correctlyrelativetothesawband?
2. Checktoseeifthesensingarmisproperlyactuating
theheadclearlimitswitch.
3. Checktoseeifthesawheadsolenoidisoperating.
SAWHEADDOESN’TLOWERFORREPEATCUTS
1. Checkifthesawheadsolenoidisoperating.
2. Checkadjustmentoftheheadclearlimitswitch.
3. Checktheindexforwardlimitswitch.
SLUGGISHHYDRAULICOPERATION
1. Check for low hydraulic system pressure or low
reservoirlevel.
2. Checkforairinhydraulicsystem.
3. Check for a blocked or clogged hydraulic filter
element.
4. Checkforfaultyhydraulicpumpoperation.
5. Checkfortoocoldhydraulicoil.
BANDDRIVETRANSMISSIONGETSHOT
1. Checkforlowtransmissionoillevel.
2. Checkforlubricantleakage.
NUISANCEOVERLOADTRIPPING
1. Checkiftheoverloadrelaysaresettolow.Increase
thesettingifnecessary.
SENSINGARMHANGSUP
1. Checkifthesensingarmisdirty.