Owner`s manual

16 Owner’s Manual
Voltmaster Engine-Driven Generators
3.1.6 LN-Series (propane/natural gas) models
LN-Series generators feature a special vapor fuel carburetor with a
vacuum safety shutdown and an electric solenoid fuel shutdown.
LN-Series generators are derated, because the liquid propane (LP)
and natural gas (NG) fuel reduces engine output slightly versus
gasoline.
Safety
■ Only a qualified LP or NG installer should work with LP and NG fuel
lines, connections, and components. Installing the fuel line for an
LN-Series generator is not a do-it-yourself job.
■ Propane gas is heavier than air and may settle in low places. Avoid
cutting, welding, and any activity that might ignite low-lying gas
near fuel lines or fuel tanks.
Fuel regulator
The regulator on the generator is a secondary regulator. Incoming
fuel supplies require an external, primary fuel regulator with output
of 11 inches of water column pressure. Fuel pressure that is too high
or too low will adversely affect generator performance.
Do not adjust the generator’s fuel regulator, which is preset at the
factory. To adjust the fuel mixture, see “Fuel mixture for LN-Series”
on page 25.
Fuel shutoff valve
An external, manual fuel shutoff valve is also required. The valve
must be installed using the flexible fuel line included with the
generator, which isolates the generator vibration from rigid
pipeline.
The shutoff valve must be installed within sight of the generator.