Fuel Conversion / Gas Connections
Installation Guidelines For 50 Hz Air-Cooled Generator Sets
27
Checking Fuel Line Connections
Checking Fuel Pressure
Proceed as follows to check fuel pressure at the regulator
in the generator:
1.
Close fuel supply valve.
2.
See
. Remove the 1/8 in NPT plug from
top fuel pressure test port in the regulator and
install fuel pressure tester (manometer).
Figure 5-5. Checking Pressure with Manometer
NOTE:
Connection to the fuel pressure test port requires
a fitting with 1/8 in NPT thread.
3.
Open fuel supply valve and verify fuel pressure is
within the specified values.
4.
Record static fuel pressure:
NOTE:
Fuel pressure can also be tested at the manome-
ter port on the fuel shutoff valve shown in
NOTE:
See owner’s manual or spec sheet for correct
fuel pressure specifications. If fuel pressure is not within
specifications, contact local gas supplier.
5.
Close fuel valve when completed, but keep man-
ometer connected for future tests of the generator
set while starting, running, and under loads.
Performing Fuel System Leak Test
All products are factory-tested before shipping to verify
performance and integrity of the fuel system. However, it
is important to perform a final fuel system leak test before
starting the generator set. The entire fuel system should
be tested from supply to regulator.
See
. Perform a final fuel system leak test
after generator set installation. The test will identify possi-
ble leaks at all connection points (A).
It is best practice to perform a fuel system leak test
during normally-scheduled maintenance.
Figure 5-6. Connection Points to Leak Check
Inspect for leaks by spraying all connection points with a
non-corrosive gas leak detection fluid. The solution
should not be blown away or form bubbles.
001807
ISO000192
Fuel and vapors are extremely
flammable and explosive. No leakage
of fuel is permitted. Keep fire and
spark away.
A
A
A
004038
