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1、4Physicalrequirements4.1StabilityUnderconditionsofnormaluse,unitsandequipmentshallnotbecomephysicallyunstabletothedegreethattheycouldbecomeahazardtoanoperatorortoaserviceperson.Ifunitsaredesignedtobefixedtogetheronsiteandnotusedindividually,thestabilityofeachindividual
2、unitisexemptfromtherequirementsof4.1Therequirementsof4.1arenotapplicableiftheinstallationinstructionsforaunitspecifythattheequipmentistobesecuredtothebuildingstructurebeforeoperation.Underconditionsofoperatoruse,astabilizingmeans,ifneeded,shallbeautomaticinoperationwhe
3、ndrawers,doors,etc,areopened.Duringoperationsperformedbyaserviceperson,thestabilizingmeans,ifneeded,shalleitherbeautomaticinoperation,oramarkingshallbeprovidedtoinstructtheservicepersontodeploythestabilizingmeans.Complianceischeckedbythefollowingtests,whererelevant.Eac
4、htestisconductedseparately.Duringthetests,containersaretocontaintheamountofsubstancewithintheirratedcapacityproducingthemostdisadvantageouscondition.Allcastorsandjacks,ifusedinnormaloperation,areplacedintheirmostunfavourableposition,withwheelsandthelikelockedorblocked.
5、However,ifthecastorsareintendedonlytotransporttheunit,andiftheinstallationinstructionsrequirejackstobeloweredafterinstallation,thethejacks(andnotthecastors)areusedinthistest;thejacksareplacedintheirmostunfavourableposition,consistentwithreasonablelevelingoftheunit..Aun
6、ithavingamassof7kgormoreshallnotfalloverwhentiltedtoanangleof10°fromitsnormalupright position.Doors,drawers,etc,areclosedduringthistest.Aunitprovidedwithmulti-positionalfeaturesshallbetestedintheleastfavourablepositionpermittedbytheconstruction-Afloor-standingunithavin
7、gamassof25kgormoreshallnotfalloverwhenaforceequalto20%oftheweightoftheunit,butnotmorethan250N,isappliedinanydirectionexceptupwards,ataheightnotexceeding2mfromthefloor.Doors,drawers,etc,whichmaybemovedforservicingbytheOPERATORorbyaSERVICEPERSON,areplacedintheirmostunfav
8、ourableposition,consistentwiththeinstallationinstructions.-Afloor-standingunitshallnotfalloverwhenaconstantdownwardfo
