Briggs & Stratton 7000 WATT 206484GS - Manual (Page 20)

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Operation
Automatic Operation Sequence
Thegenerator’scontrolpanelhousesalogiccontrolcircuit
board.Thiscontrolboardconstantlymonitorsutilitypower
sourcevoltage.Shouldthatvoltagedropbelowapresetlevel,
controlboardactionwillsignaltheenginetocrankandstart.
Whenutilitysourcevoltageisrestoredaboveapreset
voltagelevel,theengineissignaledtoshutdown.
Theactualsystemoperationisnotadjustableandissequenced
bysensorsandtimersonthecontrolboard,asfollows:
Utility Voltage Dropout Sensor
 • Thissensormonitorsutilitysourcevoltage.
 • Ifutilitysourcevoltagedropsbelowabout70percent
ofthenominalsupplyvoltage,thesensorenergizesa
10secondtimer.Thetimerisusedto‘sense’brown-outs.
 • Oncethetimerhasexpired,theenginewillcrankand
start.
Utility Voltage Pickup Sensor
Thissensormonitorsutilitypowersupplyvoltage.Whenthat
voltageisrestoredabove80percentofthenominalsource
voltage,atimedelaystartstimingandtheenginewillgoto
enginecool-down.
Engine Cool-down Timer
 • Whentheloadistransferredbacktotheutilitypower
source,theenginecool-downtimerstartstiming.
 • Thetimerwillrunforaboutoneminute,thenthe
generatorwillstop.
 • Minimumengineruntimeis5minutes.
Automatic Operation
Toselectautomaticoperation,dothefollowing:
 1. Setthemaindistributionpanelcircuitbreakerthat
sendsutilityvoltagetothetransferswitchtoON.
 . Setthegenerator’smaincircuitbreakertoitsON
position.
 3. SetthesystemswitchtoAUTO.
CAUTION
WiththesystemswitchsettoAUTO,theengine
maycrankandstartatanytimewithoutwarning.
Suchautomaticstartingnormallyoccurswhen
utilitysourcevoltagedropsbelowapresetlevel
orduringthenormalexercisecycle.
Topreventpossibleinjurythatmaybecausedbysuch
suddenstarts,alwayssetthesystemswitchtoOFF.
Removethe15Ampfusebeforeworkingonoraround
thegeneratorortransferswitch.
•
•
Checking Automatic Operation
Tocheckthesystemforproperautomaticoperation,proceed
asfollows:
 1. TurnOFFthemaindistributionpanelcircuitbreaker
sendingpowertotheautomatictransferswitch.
Theenginewillcrankandstartwhentheutilityvoltagedrops
outandthesensorhastimedout.Letthesystemgothrough
itsentireautomaticoperationsequence.
 . Withthegeneratoroutputsupplyingitsloads,turnON
themaindistributionpanelcircuitbreakerthatsupplies
utilitypowertotheautomatictransferswitch.
 3. Theautomatictransferswitchwilltransferloadsback
totheutilitypowerafter5minuteminimumruntime
andutilityisrestored.
 4. Thegeneratorwillrunforanadditionaloneminutefor
enginecooldown,thenshutdown.
NOTE:Ifutilityisrestoredandgeneratordoesnotshutdown
after10minutes,setsystemswitchtoOFFandcontactyour
installerorlocalservicecenter.
Thiscompletesthetestproceduresforautomaticoperation.
Thehomegeneratorwillnowstartautomaticallywhenutility
powerislostandwillsupplypowertothetransferswitch.