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2.2.2
Fuel Conversion, Original Fuel System, 20RCA/L
For LPG fuel, an orifice is used in the fuel line. The unit is typically shipped set up for natural gas, with the loose orifice tied near
the fuel solenoid valve. To convert to LPG, install the LPG orifice as described below. See Figure 15 for the fuel system
component locations.
Note:
The generator set harness may contain a pair of ignition timing leads near the fuel solenoid valve. Connecting or disconnecting
these leads has no effect on the 20RCA/RCAL operation.
Procedure to Convert from NG to LPG, 20RCA/L
1.
Press the OFF button on the generator set controller.
2.
Disconnect utility power to the generator set (open the corresponding circuit breaker in the distribution panel).
3.
Disconnect the generator set engine starting battery, negative (-) lead first.
4.
Turn off the fuel supply.
5.
Remove the hose clamp and fuel hose from the hose fitting. See Figure 15.
6.
Insert the LPG orifice into the hose fitting. See Figure 15.
7.
Slide the hose onto the hose fitting and secure it with the clamp.
8.
Connect and turn on the new fuel supply.
9.
Reconnect the generator set engine starting battery leads, negative (-) lead last.
10. Reconnect utility power to the generator set.
11. Start the generator set by pressing the RUN button on the generator set controller.
12. Check for leaks using a gas leak detector.
13. Run the generator set and check the operation.
14. Press the OFF button to shut down the generator set.
Conversion from LPG to Natural Gas, 20RCA/L
To convert from LPG to natural gas, repeat the steps above to remove the LPG fuel orifice
Fuel orifice for LPG
Hose fitting
Fuel regulator
Figure 15
Fuel Regulator and LPG Orifice, 20RCA/L
TP-7091
4/23
Fuel solenoid valve (with coil)
GM101740
27
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