Kohler 14RESA Manual page 115

6.11.3 Fuel Regulators
The typical gaseous fuel system uses two regulators.
The primary regulator reduces the line pressure to an
allowable inlet pressure for the secondary regulator.
The fuel supplier provides and maintains the primary
regulator. The secondary regulator is factory-installed
on the generator set and is designed for a maximum inlet
pressure of 2.7 kPa (6 oz./in.
column.
Note: Do not attempt to adjust the fuel mixture or engine
speed by adjusting the regulators.
The fuel lockoff prevents fuel flow when the engine is not
operating. See Figure 6-28. Do not try to adjust the fuel
pressure, fuel mixture, or engine speed using the fuel
lockoff.
1
1. Fuel lockoff (do not adjust)
2. Fuel inlet, 1/2 in. NPT
3. Inlet pressure check location
Figure 6-28 Fuel Regulator
TP-6805 8/15
2
) or 280 mm (11 in.) water
2
Checking the Fuel Pressure
Use a gauge or manometer to check the fuel pressure at
the secondary regulator inlet.
Measure the fuel pressure with the generator set
running at rated load. Contact the fuel supplier if the inlet
pressure is not within the range shown in Figure 6-27.
Fuel Pressure Required
14/20RESA(L)
20RESB
Fuel
1.2--2.7 kPa
(5--11 inches H
Natural Gas
LP
Figure 6-27 Fuel Pressure Requirements
3
Section 6 Component Testing and Adjustment
See Figure 6-28.
20RESC(L)
20RESD
0.9--2.7 kPa
O) (3.5--11 inches H
2
1.7--2.7 kPa
(7--11 inches H O)
2
GM71184
O)
2
115