Briggs & Stratton 6kVA Generating Set, Operator'S Manual

Page: 19 / 64

19
Operation
Important Owner’s Considerations
Engine Oil
The engine is shipped from the factory pre-run and
filled with synthetic oil (API SJ/CF 5W-30). This allows
for system operation in a wide range of temperature
and climate conditions. Before starting the engine,
check oil level and ensure that engine is serviced as
described in Maintenance .
Battery
The installer must supply a rechargeable 12 volt
DC starting battery. See Battery in Final Installation
Considerations in the installation manual.
With the battery installed, all wiring to transfer switch
and generating set completed, utility power supplied
to the automatic transfer switch, and the unit in
AUTO mode, the battery receives a trickle charge
while the engine is not running. The trickle charge
cannot be used to recharge a battery that is completely
discharged.
15 Amp Fuse
The generating set’s 15 Amp fuse is critical to correct
system operation. The 15 Amp fuse was removed
at the factory to prevent the unit from starting during
shipping. Your installer will ensure the fuse is properly
installed upon completion of the installation.
Automatic Operation Sequence
The generating set’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 generating set 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 generating set 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.
NOTICE Any attempt to crank or start the engine
before it has been properly serviced with the
recommended oil will result in equipment failure.
• DO NOT attempt to crank or start the engine before
it has been properly serviced with the recommended
oil. This may result in an engine failure.
• Damage to equipment resulting from failure to follow
this instruction will void generating set warranty.
CAUTION With the system switch set to
AUTO , the engine could crank and start at
any time without warning, resulting in minor or
moderate injury.
• To prevent possible injury that may be caused by
such sudden starts, always set the system switch to
OFF if performing maintenance on the system.
• Remove the 15 Amp fuse before working on or
around the generating set or transfer switch.