Perkins 2506 Operation And Maintenance Manual page 36

36
Operation Section
Starting with Jump Start Cables
During startup and light load operation on certain
standby generator set applications, white smoke and
wetness in the exhaust system may be experienced
in cold ambient conditions of below 7° C (45° F).
When a diesel engine is operated on light loads, the
engine does not reach and maintain the correct
operating temperature.
When the diesel engine runs below the designed
operating temperature for extended periods,
unburned fuel accumulates and that causes wetness
in the exhaust system. The following
recommendation will reduce the symptoms, but will
not fully eliminate the symptoms.
The recommendation to achieve increased cylinder
temperature of the engine is to apply a minimum load
of 30 percent to reduce white smoke and
accumulation of unburned fuel.
If the engine has not been run for several weeks, fuel
may have drained. Air may have moved into the filter
housing. Also, when fuel filters have been changed,
some air will be left in the filter housing. Refer to
Operation and Maintenance Manual, "Fuel System -
Prime" to remove air from the fuel system.
Use the procedure that follows for cold weather
starting.
NOTICE
Do not engage the starting motor when flywheel is
turning. Do not start the engine under load.
If the engine fails to start within 30 seconds, release
the starter switch or button and wait 30 seconds. The
30 second wait, allows the starting motor to cool be-
fore attempting to start the engine again.
1. If equipped, press the start button. If equipped,
turn the keyswitch to the START position to
engage the electric starting motor and crank the
engine.
2. Repeat step 1 three times if the engine fails to
start.
3. If the engine fails to start, investigate the problem.
Use the Perkins electronic service tool. A system
fault may be indicated after the engine is started. If
a fault is indicated, the ECM has detected a
problem with the system. Investigate the cause of
the problem. Use the Perkins electronic service
tool.
Note: Oil pressure should rise within 15 seconds
after the engine starts. The electronic engine controls
monitor the oil pressure. The electronic controls will
stop the engine if the oil pressure is below normal.
4. Operate the engine at no load until all the coolant
temperature starts to rise. Check the gauges
during the warmup period.
Note: The cold start strategy will be activated when
the coolant temperature is below 17 °C (63 °F). The
cold start strategy will continue until the coolant
temperature reaches 28 °C (82 °F), or until the
engine has been running for 14 minutes. A timer will
disable the cold start strategy after a maximum time
of 14 minutes.
Note: The oil pressures and fuel pressures should be
in the normal range on the instrument panel. Do not
apply a load to the engine until the oil pressure gauge
indicates at least normal pressure. Inspect the engine
for leaks and/or unusual noises.
Note: After the ECM has completed the cold mode,
cold mode cannot be enabled again until the ECM is
switched OFF.
Note: Do not attempt to restart the engine until the
engine has completely stopped.
Starting with Jump Start
Cables
Do not use jump start cables in order to start the
engine. Charge the batteries or replace the batteries.
Refer to Operation and Maintenance Manual,
"Battery - Replace".
After Starting Engine
For new installations and engines that are recently
rebuilt, carefully monitor the engine in order to detect
any unusual engine performance.
Check for leaks in the air and in the fluid systems.
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