Problem
PossibleCauseCorrectiveAction
1.Theseatsensorswitchis
malfunctioning.
1.Checkthemechanicalandelectrical
operationoftheswitch.
2.Thehydraulic-uidlevelislow.2.Fillthehydraulic-uidreservoirtothe
correctlevel.
3.Adriveshaftissheared.3.Checkthemotorandrotordriveshafts
andreplacethemifnecessary.
4.Thepressurereliefvalveisjammed
openorwronglyset.
4.Havethereliefvalvepressurechecked.
Consultyourauthorizeddealer.
5.Acuttingunitisjammed.
5.Clearanyjamsasnecessary.
6.AcuttingunitcontrolvalveisintheOFF
position,causedbymalfunctioning
controlvalve.
6.Overhaulthecontrolvalve.
7.AcuttingunitcontrolvalveisintheOFF
position,causedbyanelectricalfault.
7.Havetheelectricalsystemcheckedfor
anelectricalfault.
Thecuttingunitsfailtostartupwhen
loweredintowork.
8.Theliftarmproximityswitchis
incorrectlyset.
8.Checkandadjusttheproximityswitch.
Therotorrotatesinthewrongdirection.1.Thehosesareconnectedwrongly.
1.Checkthehydrauliccircuitandconnect
thehosescorrectly.
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