8
4300-00
60706-244
Natural Gas
2
3
4
UNIT OFF
LINE PSI
7-11 in
7-11 in
4-6 oz
4-6 oz
STARTING
LINE PSI
7-11 in
7-11 in
4-6 oz
4-6 oz
NO LOAD
LINE PSI
7-11 in
7-11 in
4-6 oz
4-6 oz
FULL LOAD
LINE PSI
7-11 in
7-11 in
4-6 oz
4-6 oz
Notice the preceding tables give two (2) different units of
measuring fuel pressure. The fi rst is with a pressure gauge
calibrated in ounces per square inch. The second and most
accurate is the use of a simple water manometer. A manometer
is calibrated in inches of water column.
Remember that whichever fuel delivery system or type of vapor
fuel used, the fuel pressure at the demand regulator installed on
the engine generator must be between 4 and 6 oz. (7-11 inches
of water column). Any lower pressure and the unit will starve
for fuel under load. Any higher and the unit may ‘fl ood’ when
attempting to start.
LP LIQUID WITHDRAWAL SYSTEMS
When installing a unit equipped the LP liquid withdrawal a
primary regulator is not required on the supply tank. The supply
line is connected to a liquid withdrawal valve on the supply
tank and runs directly to the fuellock strainer mounted on the
engine generator set. Normally a 3/8 to 1/2 inch copper line is
acceptable for this type of fuel installation. You must be sure
that the valve you have connected to on the supply tank is in
fact a liquid supply valve and has a drop tube inside the tank
that is pulling fuel from the bottom of the supply tank. Before
starting the unit you must confi rm that you have a good liquid
supply at the unit. Engine generator sets equipped for liquid
withdrawal will not run properly when supplied with high
pressure vapor fuel.
LUBRICATION
Before starting the engine, check the oil level in the crankcase.
If it is low, refi ll to the full mark with the proper weight/grade of
oil as recommended by the engine manufacturer’s maintenance
instructions. The necessity of using the correct oil, and keeping
the crankcase full cannot be over emphasized. Failure to use
the proper oil and keep the crankcase properly fi lled will cause
excessive engine wear and shorten its useful life.
COOLANT
Before starting the engine, check the coolant level in radiator.
If it is low, refi ll as specifi ed in the engine manufacturer’s
maintenance instructions. The radiator should be fi lled to about
1 inch below the fi ller neck. For additional information on engine
coolant requirements see engine manufacturer’s maintenance
instructions.
INSTALLING THE BATTERY
**** CAUTION ****
In the following battery installation procedure, check to be sure
the selector switch remains in the “stop” position. This should be
your last step before initial start-up.
A customer supplied twelve-volt battery is required to complete
the installation. Installation of the highest CCA rated battery,
within the correct BCI group, will increase cold weather starting
performance. Gel batteries should not be used with the battery
tender installed in the generator enclosure.
Model
Voltage
BCI
Group
MINIMUM
CCA Rating
GR150P4
12
31
900
Installation and servicing of batteries must only be performed
or supervised by personnel knowledgeable of batteries and the
required precautions. Keep unauthorized personnel away from
batteries.
When installing or replacing batteries, use the proper group/size
starting battery. The battery should be a Maintenance Free
lead acid design. Deep cycle batteries will not work for this
application.
CAUTION – PERSONAL DANGER
CAUTION - NEVER dispose of a battery in a fi re. The battery is
capable of exploding.
CAUTION - DO NOT open or mutilate the battery. Released
electrolyte is known to be harmful to the skin and eyes and to be
very toxic.
These engine generator sets are all NEGATIVE ground. Be very
careful not to connect the battery in reverse polarity, as this may
short circuit the battery charging system on the engine.
CAUTION – A battery presents a risk of electrical shock and high
short circuit current. The following precautions must be observed
when working with batteries.
