Troubleshooting
Hydraulic Hydraulic
Hydraulic
Drive Drive
Drive
System System
System
Beforeperforminganytroubleshootingprocedures:
1.FollowPressureReliefProcedure,page47.
2.TurnthemainpowerswitchOFF.
3.Allowequipmenttocool.
Trytherecommendedsolutionsintheordergivenfor
eachproblem,toavoidunnecessaryrepairs.Also,
determinethatallcircuitbreakers,switches,and
controlsareproperlysetandwiringiscorrectbefore
assumingthereisaproblem.
NOTE: NOTE:
NOTE:
Motorstartupisdelayedamaximumof5
secondsfromthelasttimethemotorwasturnedoff
toreducethechanceofthemotoroverheating.
PROBLEM PROBLEM
PROBLEM
CAUSE CAUSE
CAUSE
SOLUTION SOLUTION
SOLUTION
Looseconnectionsand/orcontactor
(CT01)isnotclosing.
Checkwiringbetweenthefollowing
components:
•HCMandcontactorCT01
•HCMandfusesF11/F12
DamagedHCM.ReplaceHCM.
Looseconnectionsand/orcontactor
(CT01)isclosing.
Checkwiringbetweenthefollowing
components:
•motorjunctionboxandCB12
•CB12
•contactCT01andmain
disconnectswitch(orterminal
blocksTB06andTB09)
Electricmotorwillnotstartorstops
duringoperation.
Circuitbreakertripped.ResetCB12withintheelectrical
enclosureafterconrmingwiringis
correctanditsinsulationisintact.
36 334946H