Generac Power Systems Air-cooled Industrial Mobile Generator 09843-2 - Manual (Page 11)

Generac 1M-72LP Industria! Mobile Generator
FUEL REQUIREMENTS
This generator is equipped with a liquid propane (LP) gas fuel
system. LP gas is usually supplied as a liquid in pressure tanks
(Figure 8).
The IM series generators require a “vapor withdrawal” type fuel
system. This type of gaseous fuel system uses the vapors
forming above the liquid fuel in the storage tank. Air temper­
atures around the storage tank must be high enough to sustain
adequate fuel vaporization. In colder climates, you may need
to use an independent heat source to be sure the fuel suffi­
ciently vaporizes in the storage tank.
LP gas may consist of propane, butane, or a mixture of the
two gases. Propane vaporizes at temperatures as low as -
20°F (-29°C), but butane returns to its liquid state when the
temperature drops below about 32°F (0°C). For that reason,
a higher ratio of propane is desired in the gas mixture when
temperatures drop below freezing.
ENGINE OIL REQUIREMENTS
Use a high quality detergent oil classified “For Service SF and
with an oil viscosity rating of SAE10W-30 oil. Do not pour in
any additives to the recommended oil. Engine crankcase
capacity is 1.5 U.S. quarts. See MAINTENANCE section for
oil level check and filling procedures.
Figure 8 — Typical LP Gas Fuel System
ENGINE SPECIFICATIONS
Type of Engine..................... ........ .....................Twin Cylinder
Cooling Method.......... ............. ............ ...................Air-cooled
Rated Horsepower............. ............................ 16 at 3600 rpm
Displacement.. .................................................... 479.4cc
Compression Ratio....................... .......................... .....8.6 to1
Cylinder Block.......................Aluminum with cast iron sleeve
Type of Governor.......................... ..Mechanical, fixed speed
Engine Governed Speed ............. ....................... ..2900 RPM
Air Cleaner...... ................. ............... ....... Paper element with
.................................................................. foam pre-cleaner
Starter................ .................................. .....12 volt DC electric
Ignition System.......... ......Solid state with flywheel magneto
Recommended Spark Plugs .. ................Champion RC12YC
Spark Plug Gap.......... ..... ................. 0.030 inch (0.76mm)
GENERATOR SPECIFICATIONS
Rotor RPM ..................................................................... 3600
Rotor Poles....................................................................... 2
Engine RPM ................................................................... 2900
Wattage*..........................................................................7200
Voltage*.............................................................................240
Current*.............................................................30 AC ampsV
Phase .................................................... ............................ 1
Frequency..................................................................60 Hertz
Weight................................................................... 200 pounds
Length............ ............. ............... ......................... ...25 inches
Width.................................. ............. .....................18.5 inches
All units are reconnectable to 120 volts, single phase volt­
age output.
V Rated maximum continuous current 120 volts is 60 amps.
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