Chapter3InstallationPreparation
Ifheatingfacilitieshavebeeninstalledintheequipmentroom,
novalveorairoutletmustbeleftwithintheroom.Aircondition-
ingequipmentmustcomplywithindoortemperatureandhumidity
requirements.Moreover ,damagestoequipmentcausedbystatic
electricityandinterferenceonequipmentbytheelectromagnetic
īæeldmustbeavoided.
BeforeinspectingtheindoorenvironmentofNOCroom,thefol-
lowingrequirementsmustbemet.
ļæ½Static-freeRequirements
Equipmentroommustbelaidwithantistaticīoororsemi-con-
ductiveīoorleather .Inaddition,copperfoilsmustbeusedfor
groundingatseveralpoints.
Makesurethecopperfoilsarepressedbetweencementīoor
andsemi-conductiveīoor ,whichisconnectedwiththeground-
ingcable.
ļæ½Protectionagainstelectro-magneticinterference
Electricīæeldintensitymustbelessthan300mV/m.Magnetic
īæeldintensitymustbelessthan11GS.
ļæ½DustproofRequirement
ļæ½Dustparticledensitywithadiameterthatisgreaterthan5
micrometersmustbelessthan30000/m
3
.
ļæ½Dustparticlesmustbenon-conductive,non-magneticin-
ductiveandnon-corrosive.
ļæ½Thefollowingdustproofmeasuresarerecommended:
āDoorsandwindowsmustbesealed.Theexternalwin-
dowsmustbesealedwithdouble-layerglassandthe
doorsmustbesealedwithdustproofsealingstrips.The
idealconditionistosealequipmentroomwithashutter
equippedwithadustīælterdevice.
āWorkclothesandslippersmustbekeptcleanand
changedregularly.
āItisrecommendedtoplaceoperationequipment
inouterroom,avoidingfrequentaccessandopen-
ing/closingofequipmentroomdoor .
āKeepahigherrelativehumiditywithinthepermissible
rangeinequipmentroomtoreducestaticadherenceof
dust.
āWallsandceilingofequipmentroommustbepaintedor
pastedwithwallpaper .Thisisbettertouselusterless
paint.
ļæ½Temperatureandhumidityrequirements
TemperatureandhumidityrequirementsareshowninT
able4.
ConīædentialandProprietaryInformationofZTECORPORATION11