TP-5393 9/93 Scheduled Maintenance 3-9
LP Gas Fuel System
Specification—LP Liquid
The LP gas liquid withdrawal fuel system utilizes a
vaporizerandregulatortoconvertLPgasfromaliquidto
a gaseous state. Vaporized fuel is combined with air in
the carburetor to producethe correctair/fuel mixture for
proper combustion. Be sure the LP gas is properly
blended for the season and/or geographic location in
which the generator is operated. To locate carburetor
adjustments refer to Figure 3-12.
Specification—LP Vapor
The LP gas system consists of a shutoff valve, a
secondary regulator, and carburetor that adjusts the
mixtureof fuel andair for propercombustion.A propane
LP gas is used.
The gas and supply pressure should not exceed six
ounces. to check inlet pressure, remove plug on fuel
inlet of gas regulator. Insert ounce pressure gauge or
manometer. Adjust pressure to 4-6 ounces or 7-11
inches water column. Inlet pressure is adjusted on
primary regulator.
NOTE
If a removable fuel container is used as a fuel source,
fuel leakage during a container change must be
prevented by the use of a quick-close coupling on the
fuel line or a check valve installed in the fuel line.
NOTE
A hydrostatic relief valve is also required between the
container shutoff valve and the automatic shutoff valve
on the generator set.
WARNING
Explosive fuel vapors.
Can cause severe injury or death.
Useextremecarewhenhandling,storing,
and using fuels.
Explosive fuel vapors can cause severe injury or
death.Fuelleakage cancauseanexplosion. CheckLP
vaporgas or naturalgas fuel systemforleakage usinga
soap-water solution with fuel system test pressurized to
6-8 ounces per square inch (10-14 inches water
column). Do not use test solutions that contain
ammonia or chlorine, since the soap will not bubble for
an accurate leakage test.
Explosive fuel vapors can cause severe injury or
death.Fuelleakage cancauseanexplosion. CheckLP
vapor gas fuel system for leakage using a soap-water
solution with fuel systemtest pressurizedto 6-8 ounces
per square inch (10-14 inches water column). Do not
use test solutions that contain ammonia or chlorine,
since the soap will not bubble for an accurate leakage
test.
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