Alpha Technologies AlphaGen 3.5_5.0kW Kohler COM5 User Manual

Page 50

TP-6482 8/06

Section 5 Component Testing and Adjustment

5.7.2

Fuel Solenoid Valve

The fuel solenoid valve is located on the outside of the
enclosure. It is a 12 VDC valve energized by lead 70
when the generator set controller is in the crank or the
run mode. The fuel solenoid valve is supplied with the
enclosure.

tp6092

Figure 5-21 Fuel Solenoid Valve

5.7.3

Fuel Conversion

Two

fuel

metering valves

allow field-conversion

between natural gas and LP vapor.

Have the fuel

conversion procedure performed by trained and
qualified personnel.

Note: Do not adjust the fuel metering valves. The fuel

metering valves are factory-sealed to comply
with applicable emission standards and to
provide the best possible hot and cold starting.

The manufacturer ships the generator set with the fuel
system set for natural gas. To convert to LP gas, use the
following procedure to move the fuel line from the
natural gas inlet port to the inlet port in the LP fuel
metering valve (or from the LP inlet to the natural gas
inlet to convert from LP to natural gas). See Figure 5-22
for the LP and natural gas fuel connection and fuel block
locations. Also see the service views in Section 1.4.

Fuel Conversion Procedure

1. Remove the enclosure front door and the

generator compartment front panel to access the
fuel system.

2. Move the generator set master switch to the STOP

position.

1. Battery harness connector
2. Fuel metering valves
3. LP and natural gas inlet ports

TP6076

Figure 5-22 Fuel System Conversion

3. Disconnect the battery at the quick-disconnect

plug.

4. Turn off the fuel supply by closing the upstream

valve outside of the enclosure.

5. Remove the hose clamp and fuel line hose from the

fitting in the fuel metering valve.

6. Remove the hose fitting from the natural gas (or

LP) inlet in the fuel metering valve.

7. Remove the plug from the LP (or natural gas) inlet.

Clean the plug with a dry cloth or brush, apply fresh
pipe sealant, and install it into the natural gas (or
LP) inlet.