Generac Power Systems 9 kW NG Manuel D’Utilisation

GENERAL INFORMATION

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The transfer of load when the generator is running is 
dependent upon the operating mode as follows:

1.  Manual

•  Will not transfer to generator if utility is present.
•  Will transfer to generator if utility fails (below 65% of

nominal for 10 consecutive seconds.

•  Will transfer back when utility returns for 15 consec

-

utive  seconds. The  engine  will  continue  to  run  until 
removed from the Manual mode.

2.  Auto

•  Will  start  and  run  if  Utility  fails  for  10  consecutive

seconds.

•  Will start a five (5) second engine warm-up timer.
•  Will not transfer if utility subsequently returns.
•  Will transfer to generator if utility is still not present.
•  Will transfer back to utility once utility returns (above

75% of nominal) for 15 seconds.

•  Will  transfer  back  to  utility  if  the  generator  is  shut

down  for  any  reason  (such  as  the  switch  is  in  the 
OFF position or a shutdown alarm.

•  After  transfer,  will  shut  down  engine  after  one  (1)

minute cool-down time.

3.  Exercise

•  Will  not  exercise  if  generator  is  already  running  in

either Auto or Manual mode.

•  During  exercise,  the  controller  will  only  transfer  if

utility  fails  during  exercise  for  10  seconds,  and  will 
switch to Auto mode.

Initial  Condition:  Generator  supplying  power  to  cus-
tomer  load.  When  the  utility  returns  (above  75%  of 
nominal), a 15 second return to utility timer will start. 
At  the  completion  of  this  timer,  if  the  utility  supply  is 
still  present  and  acceptable,  the  control  will  transfer 
the load back to the utility and run the engine through 
a  one  (1)  minute  cool  down  period  and  then  shut 
down.  If  utility  fails  for  three  (3)  seconds  during  this 
cool down period, the control will transfer load back to 
the generator and continue to run while monitoring for 
utility to return.