Lukas LC 99 - Page 20

20
Fault Check Cause Solution
Cylinderdoesnot
retract,onlypartially
retractsorretracts
moreslowlythan
usual.
Checkthatthe
pressurerelief
valveonthehand
pumpisfullyopen.
Pressurerelief
valveonthe
handpumppartly
closed.
Fullyopenthepressure
reliefvalveonthehand
pump.
Checkthe
hydraulicuidlevel
inthehandpump
supplyingtheuid.
Toomuch
hydraulicuidin
thehandpump.
Drainhydraulicuid.
Checkthatall
couplingsarefully
tightened.
Hydrauliccoupling
loose.
Tightenhydraulic
coupling.
Airinhydraulic
system.
Venthydraulicsystemin
accordancewith
section6.1.
Checkthecylinder
fordamage.
Cylinderreturn
springisbroken
orotherdamage
ispresentonthe
cylinder.
Havethedamage
repairedbyanauthorised
dealer,bypersonnel
speciallytrainedby
LUKAS,orbyLUKAS
itself.
Devicedoesn’t
performatitsgiven
power.
Checkthe
hydraulicuid
levelinthepump
supplyingtheuid.
Insu󰀩cient
hydraulicuidin
thehandpump.
Topuphydraulicuid,de-
aerate.
Device’scutting
behaviourhas
deteriorated.
Checkcutting
insertsfordamage.
Mechanical
damagedueto
cuttingofmaterials
thataretoohard.
Replacecuttinginserts.
Hoselinecannotbe
coupled.
Checkthatthe
pressurerelief
valveonthehand
pumpisopen.
Pressureistoo
high.
Openthepressurerelief
valveonthehandpump.
Couplingdefective. Couplingmustbe
replacedimmediately.