Thetelephoneexchangeshallbeinstalledinastableindoorplacewithdry,ventilated
environment.(TemperatureRange:045,HumidityRange:20%-80%.Avoidstraight
sunshineorintheenvironmentofflammableorcausticgas.)Specialtelephonewire
ispreferable.
①
℃℃
Thewiringshouldnotbedoneinthundering.
Avoidusingtelephoneinthundering.
Pleasedon'tusethetelephoneinflammableandleakinggasenvironment.
Unlesstheequipmentisdisconnected,pleasedon'ttouchthebrokenpartofthewiringor
anyconnectionends.
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② Amarginalspacearoundtheexchangeshouldberemainedforheatsink,inspection
andmaintenanceofthesystem.
③ Awallboreisavailableattheundersideofmainframeforwallinstallation.Deskinstallation
isalsoadmitted.Butthecontactofwallboltandcircuitboardinsidethemainframeshould
beavoided.
④ Pleasekeeptheexchangeawayfromotherequipmentproducinglargeelectromagnetic
disturbance(suchasmotorandlargetransformer).
⑤ Noneofthewiringofanyextensionshouldsharethepipelinewithpowersupplyorantenna.
Neithershouldtheextensionbeclosetoantennaforairbroadcasting(includingshort-wave).
⑥ Avoiddamagingthepower-supplycable.Keepitawayfromwater.Encounteringtheleakage
ofwatercutoffthepowerimmediately.
⑦ Pleasedon'timpactorshaketheexchangeatanysituation.Don'tremovetheexchangein
workingstatus.
⑧ Ifthewiringpipelineoftheextensionisdisturbedbyelectromagneticwavewhilesubstitution
isunavailableinsite,specialinsulatingwireforcommunicationissuggestedforsubstitution,
also,theinsulatingnetofwhichshouldbegrounded.