Automatic Operation Sequence - Briggs & Stratton 40213 Installation And Start-Up Manual

Figure 14 — Governor Adjustment Screw
Governor
Adjustment
Screw
9. Push MANUAL OVER-RIDE switch on control panel
again. Engine should stop.
10. Turn the service disconnect to the transfer switch off.
The transfer switch will connect to the generator after
a short time delay.
11. Load generator to full load.
12. Connect an accurate frequency meter to the load side
of the generator's main circuit breaker. Frequency
should be above 57.0 Hz.
13. If frequency is below 57.0 Hz, slowly rotate the
governor adjustment screw clockwise until frequency is
above 57.0 Hz.
14. Turn the service disconnect to the transfer switch on.
The transfer switch will connect to the utility after a
short time delay.
15. After the engine has stopped running,
• If an adjustment was made in step 13, repeat steps
3 through 9.
• If an adjustment was not made in step 13, proceed
to step 16.
IMPORTANT: If the no load frequency falls out of the no
load parameter after full load adjustment is made, contact
an authorized service center.
16. Reinstall the circuit breaker cover to the air intake
guard.
17. Close the oil drain and control panel access doors.
INSTALLATION
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
10 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.
15