the engine generator-set for at least 15 minutes at 75% of Service
Load.
p.
Manually adjust the governor to increase engine speed to within 2%
of the overspeed trip speed previously determined and operate at
that point for 5 minutes. Manually adjust the governor to the
rated frequency.
q.
Manually fill the day tank to a level above the overfill limit.
Record the level at which the overfill alarm sounds. Verify
shutdown of the fuel transfer pump. Drain the day tank down below
the overfill limit.
r.
Shut down the engine. Remove the time-delay low lube oil pressure
alarm bypass and try to start the engine.
s.
Attach a manifold to the engine oil system (at the oil pressure
sensor port) that contains a shutoff valve in series with a
connection for the engine's oil pressure sensor followed by an oil
pressure gauge ending with a bleed valve. The engine's oil
pressure sensor shall be moved from the engine to the manifold.
The manifold shutoff valve shall be open and bleed valve closed.
t.
Start the engine, record the starting time, make and record engine
manufacturer's after-starting checks and inspections and operate
the engine generator-set for at least 15 minutes at 75% of Service
Load.
u.
Close the manifold shutoff valve. Slowly allow the pressure in
the manifold to bleed off through the bleed valve while watching
the pressure gauge. Record the pressure at which the engine shuts
down. Catch oil spillage from the bleed valve in a container.
Add the oil from the container back to the engine, remove the
manifold, and reinstall the engine's oil pressure sensor on the
engine.
v.
Start the engine, record the starting time, make and record engine
manufacturer's after-starting checks and inspections and operate
the engine generator-set for at least 15 minutes at 100% of
Service Load. Record the maximum sound level in each frequency
band at a distance of [22.9] [_____] m [75] [_____] feet from the
end of the exhaust and air intake piping directly along the path
of intake and discharge for horizontal piping; or at a radius of
[22.9] [10.7] [_____] m [75] [35] [_____] feet from the engine at
45 degrees apart in all directions for vertical piping. [If a
sound limiting enclosure is provided, the enclosure, the muffler,
and intake silencer shall be modified or replaced as required to
meet the sound requirements contained within this specification]
[If a sound limiting enclosure is not provided, the muffler and
air intake silencer shall be modified or replaced as required to
meet the sound limitations of this specification. If the sound
limitations can not be obtained by modifying or replacing the
muffler and air intake silencer, the contractor shall notify the
Contracting Officers Representative and provide a recommendation
for meeting the sound limitations.]
w.
Manually drain off fuel slowly from the day tank to empty it to
below the low fuel level limit and record the level at which the
audible alarm sounds. Add fuel back to the day tank to fill it
SECTION 16263A
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