Hardware Maintenance
Table Of Contents
Safetyinformation
3
Observethefollowingruleswhenworkingonelectricalequipments.
• Findtheroomemergencypower‐off(EPO)switch,disconnectingtheswitch
orelectricaloutlet.Ifanelectricalaccidentoccurs,youcanthenoperatethe
switchorunplugthepowercordquickly.
• Donotworkaloneunderhazardousconditionsorneartheequipmentthat
hashazardousvoltages.
• Disconnectallpowerbefore:
– Performingamechanicalinspection
– Workingnearpowersupplies
– Removingorinstallingmainunits
• Beforeyoustarttoworkonthemachine,unplugthepowercord.Ifyou
cannotunplugit,askthecustomertopower‐offthewallboxthatsupplies
powertothemachine,andtolockthewallboxintheoffposition.
• Ifyouneedtoworkonamachinethathasexposedelectricalcircuits,observe
thefollowingprecautions:
– Ensurethatanotherperson,familiarwiththepower‐offcontrols,isnear
you.
Attention:Anotherpersonmustbetheretoswitchoffthepower,if
necessary.
– Useonlyonehandwhenworkingwithpowered‐onelectricalequipment;
keeptheotherhandinyourpocketorbehindyourback.
Attention:Anelectricalshockcanoccuronlywhenthereisacomplete
circuit.Byobservingtheaboverule,youmaypreventacurrentfrom
passingthroughyourbody.
– Whenusingtesters,setthecontrolscorrectlyandusetheapprovedprobe
leadsandaccessoriesforthattester.
– Standonsuitablerubbermats(obtainedlocally,ifnecessary)toinsulate
youfromgroundssuchasmetalfloorstripsandmachineframes.
Observethespecialsafetyprecautionswhenyouworkwithveryhighvoltages;
instructionsfortheseprecautionsareinthesafetysectionsofmaintenance
information.Beextremelycarefulwhenyoumeasurethehighvoltages.
• Regularlyinspectandmaintainyourelectricalhandtoolsforsafeoperational
condition.
• Donotusewornorbrokentoolsandtesters.
• Neverassumethatpowerhasbeendisconnectedfromacircuit.First,checkit
tomakesurethatithasbeenpoweredoff.
Electrical safety
Important:
Useonlyapprovedtoolsandtestequipments.Somehandtoolshave
handlescoveredwithasoftmaterialthatdoesnotinsulateyouwhen
workingwithliveelectricalcurrents.
Manycustomershaverubberfloormatsneartheirmachinesthatcontain
smallconductivefiberstodecreaseelectrostaticdischarges.Donotusesuch
kindofmattoprotectyourselffromelectricalshock.