Briggs & Stratton Fortress, Installation And Operation Manual

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Operation
Automatic Operation Sequence
The generator’s control board constantly monitors
utility voltage. Should utility voltage drop below a
preset level, the control board will signal the engine to
crank and start.
When utility voltage is restored above a preset voltage
level, the engine is signaled to shut down.
The actual system operation is not adjustable and
is sequenced by sensors and timers on the control
board, as follows:
Utility Voltage Dropout Sensor
• This sensor monitors utility source voltage.
• If utility source voltage drops below about
70 percent of the nominal supply voltage, the
sensor energizes a 3 second timer. The timer is
used to ‘sense’ brown-outs.
• Once the timer has expired, the engine will crank
and start.
Utility Voltage Pickup Sensor
This sensor monitors utility power voltage. When utility
voltage is restored above 80 percent of the nominal
source voltage, a time delay starts timing and the
engine will go to engine cool-down.
Engine Cool-down Timer
When utility power is sensed and the load transfers to
the utility source, the engine will go into a cool down
period as described below:
• If the generator has run for MORE than 5 minutes,
once the utility transfer occurs, the engine will
continue to run for about 1 minute before shutting
down.
• If the generator has run for LESS than 5 minutes,
once the utility transfer occurs, the engine will
continue to run until 5 minutes has elapsed before
shutting down.
Setting Exercise Timer
The generator is equipped with an exercise timer.
During the exercise period, the unit runs for
approximately 20 minutes and then shuts down.
Electrical load transfer DOES NOT occur during the
exercise cycle (unless an utility power outage occurs).
The generator will only enter the exercise cycle if the unit is
in the AUTO mode and this exact procedure is followed.
To set the exercise timer:
NOTICE The generator is set with a default exercise
cycle setting of Tuesday at 2:00 P.M, Central Time. To
change the cycle setting, proceed to the following steps:
1. Choose the day and time you want your generator
to exercise.
2. Press and hold the left arrow and right arrow
simultaneously for 3 seconds to enter the General
Set-Up program mode. See General Set-Up flow
chart in Menu Section.
3. Verify and/or set the time and date on the unit.
4. Go to the SET EXERCISE prompt and hit the “OK”
button.
NOTICE Items will flash until they are selected.
SELECT DAY: Use the left or right arrow to toggle
through the days of the week, Once the day is
selected, hit the “OK” button.
SELECT HOUR: Use the left or right arrow to
toggle through between 1 and 12. Choose the
hour of day you want the generator to exercise
then hit the “OK” button.
SELECT MINUTE: Use the left of right arrow to toggle
between :00 and :59. Choose the minute of the day you
want the generator to exercise then hit the “OK” button.
SELECT AM/PM: Use the left of right arrow to
toggle between AM and PM. Once chosen, hit the
“OK” button.
NOTICE During the weekly exercise cycle, the
generator will run for 20 minutes, but it will not
supply power to the home. During the exercise
cycle, the in-home monitor will continue blinking the
GENERATOR READY green LED.
If you want to change the day and time the unit
exercises, simply perform the procedure again.
To turn off the generator exercise cycle, go to the OFF
selection within the day of the week menu and press OK.
The display will then scroll: EXERCISE CYCLE OFF.
Installation Inspection
Before placing the generator system into service,
inspect the entire installation carefully.
This completes the installation and start-up
instructions. The operator’s manual provides full details
on Operation, Maintenance and Troubleshooting for
this generator system.