TP-6881 7/15100 Section 5 Component Testing and Adjustment
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling,
storing, and using fuels.
WARNING
The fuel system. Explosive fuel vapors can cause severe
injury or death. Vaporized fuels are highly explosive. Use
extreme care when handling and storing fuels. Store fuels in a
well-ventilated area away from spark-producing equipment
and out of the reach of children. Never add fuel to the tank
while the engine is running because spilled fuel may ignite on
contact with hot parts or from sparks. Do not smoke or permit
flames or sparks to occur near sources of spilled fuel or fuel
vapors. Keep the fuel lines and connections tight and in good
condition. Do not replace flexible fuel lines with rigid lines. Use
flexible sections to avoid fuel line breakage caused by
vibration. Do not operate the generator set in the presence of
fuel leaks, fuel accumulation, or sparks. Repair fuel systems
before resuming generator set operation.
Gas fuel leaks. Explosive fuel vapors can cause severe
injury or death. Fuel leakage can cause an explosion. Check
the LPG vapor or natural gas fuel system for leakage by using
a soap and water solution with the fuel system test pressurized
to 6--8 ounces per square inch (10--14 inches water column).
Do not use a soap solution containing either ammonia or
chlorine because both prevent bubble formation. A successful
test depends on the ability of the solution to bubble.
LPG liquid withdrawal fuel leaks. Explosive fuel vapors
can cause severe injury or death. Fuel leakage can cause
an explosion. Check the LPG liquid withdrawal fuel system for
leakage by using a soap and water solution with the fuel
system test pressurized to at least 90 psi (621 kPa). Do not
use a soap solution containing either ammonia or chlorine
because both prevent bubble formation. A successful test
depends on the ability of the solution to bubble.
Fuel C onversion Procedure
The fuel selector valve allows field-conversion between
natural gas (NG) and LPG. The valve is factory-set to
comply with applicable emission standards and to
provide the best possible hot and cold starting.
Note: Do not adjust the factory-set adjustment screw
on the selector valve. Adjusting the screw may
violate federal and state laws. See Figure 5-32.
Use the following procedure to convert the fuel system.
The procedure includes removing the side panel,
removing the cap from the fuel selector valve, and
making the fuel selection.
See Figure 5-28 for fuel system components.
1. Fuel solenoid valve
2. Gas regulator
3. Selector valve cap
4. Selector valve
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3
4
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Figure 5-28 Fuel System
1. Press the OFF button on the generator set
controller.
2. Disconnect the power to the battery charger.
3. Disconnect the generator set engine starting
battery, negative (--) lead first.
4. Turn off the fuel supply.
5. Remove panel screws and remove left side
louvered panel. Figure 5-29.
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1. Panel screws
2. Left side panel
3. Fuel system. See Figure 5-28 for details.
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1
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Figure 5-29 Remove Left Panel
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