10
OPM-160/A
NG/LP FUEL CONVERSION
This generator set was tested on both LP and NG at the
factory. Ensure proper fuel configuration before operating.
CAUTION: EQUIPMENT DAMAGE
Do not make any fuel adjustments or governor
adjustments until all pressure readings are in compliance
with specification.
These engine/generator sets are easy to convert between
LP or NG. As the engine timing is controlled by the ECU on
the engine you only need to tell it what fuel you want to
operate on. A small rocker switch has been provide on the
underside of the engine control cabinet for this purpose.
Opening the rocker switch will tell the ECU mounted on
the engine that you are operating on NG Fuel. Closing the
rocker switch will tell the ECU that the fuel being supplied is
LP. The Advance Power Controller has an indicator light for
LP. When this light is on, the engine is set-up for LP, when
the LP light is out the engine is set up for NG. The ECU will
then reprogram the engine to operate on the proper fuel.
LUBRICATION & COOLANT
Before starting the engine, check the oil level in the
crankcase. If it is low, refill 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 do so will cause excessive
engine wear and shorten its useful life.
Before starting the engine, Check the coolant level in
the radiator. If it is low, refill as specified in the engine
manufacturer’s maintenance instructions. The radiator
should be filled to about 1 inch below the filler neck.
Two regulator system (LP vapor only)
Ref#
1
2
3
4
Unit off
Line PSI
10-15 lbs
7-11 in
4-6 oz
7-11 in
4-6 oz
Starting
Line PSI
10-15 lbs
7-11 in
4-6 oz
7-11 in
4-6 oz
No load
Line PSI
10-15 lbs
7-11 in
4-6 oz
7-11 in
4-6 oz
Full load
Line PSI
10-15 lbs
7-11 in
4-6 oz
7-11 in
4-6 oz
The following diagram is of a natural gas (NG) installation.
Reference numbers 2 through 4 in the previous diagram
are system parts supplied by the customer. Reference
number 4 is on the generator.
Natural gas
Ref#
2
3
4
Unit off
2 PSI
7-11 in
4-6 oz
7-11 in
4-6 oz
Starting
2 PSI
7-11 in
4-6 oz
7-11 in
4-6 oz
No load
2 PSI
7-11 in
4-6 oz
7-11 in
4-6 oz
Full load
2 PSI
7-11 in
4-6 oz
7-11 in
4-6 oz
