Perkins 403J-E17T Operation And Maintenance Manual page 41

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If the engine is operating above the normal range
and steam becomes apparent, perform the following
procedure:
1. Reduce the load and the engine rpm.
2. Inspect the cooling system for leaks.
3. Determine if the engine must be shutdown
immediately or if the engine can be cooled by
reducing the load.
Tachometer – This gauge indicates
engine speed (rpm). When the throttle
control lever is moved to the full throttle
position without load, the engine is running at
high idle. The engine is running at the full load
rpm when the throttle control lever is at the full
throttle position with maximum rated load.
NOTICE
To help prevent engine damage, never exceed the
high idle rpm. Overspeeding can result in serious
damage to the engine. The engine can be operated
at high idle without damage, but should never be al-
lowed to exceed high idle rpm.
Ammeter – This gauge indicates the
amount of charge or discharge in the
battery charging circuit. Operation of
the indicator should be to the right side of " " 0" "
(zero).
Fuel Level – This gauge indicates the
fuel level in the fuel tank. The fuel level
gauge operates when the " " START/STOP" "
switch is in the " " ON" " position.
Service Hour Meter – The gauge
indicates operating time of the engine.
Monitoring System
If the Shutdown mode has been selected and the
warning indicator activates, engine shutdown
may take as little as 20 seconds from the time the
warning indicator is activated. Depending on the
application, special precautions should be taken
to avoid personal injury. The engine can be re-
started following shutdown for emergency ma-
neuvers, if necessary.
The Engine Monitoring System is not a guarantee
against catastrophic failures. Programmed delays
and derate schedules are designed to minimize false
alarms and provide time for the operator to stop the
engine.
The following parameters are monitored:
• Engine speed/timing
• Temperature and pressures sensors
• Atmospheric pressure (Barometric pressure)
• Battery voltage
• Differential pressure in the diesel particulate filter
• The amount of soot in the diesel particulate filter
Programmable Options and
Systems Operation
If the Warning/Derate/Shutdown mode has been
selected and the warning indicator activates,
bring the engine to a stop whenever possible. De-
pending on the application, special precautions
should be taken to avoid personal injury.
The engine can be programmed to the following
modes:
" " Warning" "
The orange "Warning" lamp will turn "ON" and the
warning signal is activated continuously to alert the
operator that one or more of the engine parameters is
not within normal operating range.
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" " Derate" "
The orange "Warning" lamp will be "Flashing" . After
the warning, the engine power will be derated. The
warning lamp will begin to flash when the derating
occurs.
The engine will be derated if the engine exceeds
preset operational limits. The engine derate is
achieved by restricting the amount of fuel that is
available for each injection. The fuel reduction
dependents on the severity of the fault that has
caused the engine derate, typically up to a limit of
50%. This reduction in fuel results in a predetermined
reduction in engine power.
Operation Section
Monitoring System
NOTICE
41