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Briggs & Stratton Power Products Home Generator
Installation Manual
7. Normal no load frequency is 62.0 to 62.5 Hz. If
adjustment is needed at no load, slowly rotate the
governor adjustment nut (Figure 14) clockwise and/or
counterclockwise until frequency is 62.0 to 62.5 Hz.
8. Turn the service disconnect to the transfer switch off.
The transfer switch will connect to the generator after
a short time delay.
9. Load generator to rated Natural Gas rating.
10. Connect an accurate frequency meter to the load side
of the main circuit breaker (on the back of the control
panel). Frequency should be above 57.0 Hz.
11. If frequency is below 57.0 Hz, slowly rotate the
governor adjustment nut clockwise and/or
counterclockwise until frequency is above 57.0 Hz.
12. Turn the service disconnect to the transfer switch on.
The transfer switch will connect to the utility after a
short time delay.
13. Set the AUTO/OFF/MANUAL switch to OFF.
14. After the engine has stopped running, reinstall the
control panel wiring cover to the air intake guard.
15. Reinstall the air intake and control panel access doors.
16. Set the AUTO/OFF/MANUAL switch to AUTO.
AUTOMATIC OPERATION
SEQUENCE
The generator’s control panel houses a logic control circuit
board.This control board constantly monitors utility power
source voltage. Should that voltage drop below a preset
level, control board action will signal the engine to crank
and start.
When utility source 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
6-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 supply voltage.When
that 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 the load is transferred back to the utility power
source, the engine cool-down timer starts timing.
• The timer will run for about one minute, then the
generator will stop.
• Minimum engine run time is 5 minutes.
Figure 14 — Governor Adjustment Nut
Governor
Adjustment Nut