CASE CONSTRUCTION CX17C - Page 90

4-OPERATINGINSTRUCTIONS
Normaloperationofthemachine
Whenrollinginthearm,theroll-inmovementstopsmo-
mentaryatpoint(X)asshown,thenrecoversspeedagain
afterpassingpoint(X).
Thereasonisthatthemovementbythearmweightis
fasterthanthespeedofoilowintothecylinder.When
loweringtheboom,asoundmaybeheardcontinuously.
Thisiscausedbytheoilowinthevalve.
Ifthemachineisoverloaded,asoundiscausedbythe
reliefvalves,whichprotectthehydraulicsystems.
NOTICE:donotexceedthemachineperformance.Itmay
resultinaccidentorfailure.
NOTICE:performliftingoperationswithinthespecied
loadlimit.
Theupper-structureswingswhentheleftcontrollever
ismovedrightwardorleftward.Theswingingspeedis
determinedbythestrokeofthelever.
•
Whenmovingtheleftcontrolleverleftward,theupper-
structureswingsleftward.
•
Whenmovingtheleftcontrolleverrightward,theupper-
structureswingsrightward.
•
Whenreturningtheleftcontrollevercentrally(neutral
position)theupper-structurestopsmoving.
Whenyoustopswingingthemachine,anoisenearthe
swingmotormaybeheard.Thenoiseisgeneratedby
thebrakevalve.
SMIL16MEX2328AA1
4-8