x. Manually adjust the governor to speed up the
engine to a level beyond the over frequency alarm
setpoint and record the frequency when the audible
alarm sounds. Manually adjust the governor to slow
down the engine to a level below the under frequency
alarm setpoint and record the frequency when the
audible alarm sounds. Return the speed to the rated
value. Shut down the engine-generator set.
**************************************************************************
a.
Perform and record engine manufacturer's recommended prestarting
checks and inspections.
b.
Start the engine, record the starting time, make and record engine
manufacturer's after-starting checks and inspections during a
reasonable warm-up period.
c.
Activate the manual emergency stop switch and verify that the
engine stops.
d.
Remove the high and pre-high lubricating oil temperature sensing
elements from the engine and temporarily install temperature gauge
in their normal locations on the engine (required for safety, not
for recorded data). Where necessary, provide temporary wiring
harness to connect the sensing elements to their permanent
electrical leads.
e.
Start the engine, record the starting time, make and record engine
manufacturer's after-starting checks and inspections and operate
the engine generator-set at no load until the output voltage and
frequency stabilize. Monitor the temporarily installed
temperature gauges. If temperature reading exceeds the value for
an alarm condition, activate the manual emergency stop switch.
f.
Immerse the elements in a vessel containing controlled-temperature
hot oil and record the temperature at which the pre-high alarm
activates and the temperature at which the engine shuts down.
Remove the temporary temperature gauges and reinstall the
temperature sensors on the engine.
g.
Remove the high and pre-high coolant temperature sensing elements
from the engine and temporarily seal their normal location on the
engine and temporarily install temperature gauges in their normal
locations on the engine (required for safety, not for recorded
data). Where necessary provide temporary wiring harness to
connect the sensing elements to their permanent electrical leads.
h.
Start the engine, record the starting time, make and record engine
manufacturer's after-starting checks and inspections and operate
the engine generator-set at no load until the output voltage and
frequency stabilize.
i.
Immerse the elements in a vessel containing controlled-temperature
hot oil and record the temperature at which the pre-high alarm
activates and the temperature at which the engine shuts down.
Remove the temporary temperature gauges and reinstall the
temperature sensors on the engine.
j.
Start the engine, record the starting time, make and record engine
SECTION 16264A
Page 62
Previous Page
