Perkins 1204F-E44TA Operation And Maintenance Manual page 44

44
Operation Section
Selective Catalytic Reduction Warning System
The DEF level gauge will only give an accurate
reading with the application on level ground.
Illustration 37
(1) DEF gauge
(A) Low-level warning lamp
Illustration 38
Emission malfunction lamp
Warning Levels
The SCR has three levels of warning. Depending on
the fault that has been detected and software
enabled will govern the time that the system will stay
at each warning level.
Any warning should be investigated immediately,
contact your Perkins distributor. The system is
equipped with an override option. Once the override
option has been used and the fault still exist, the
engine will be locked in de-rate or shutdown mode.
Definitions
• Self-correct Fault condition no longer exists. An
active fault code will no longer be active.
• Notification Action taken by the system to alert
the operator of pending Inducement.
• Inducement Engine derates, vehicle speed
limits, or other actions intended to prompt the
operator to repair or maintain the emission control
system.
• Inducement Categories The Inducements are
separated into categories. DEF Levels have
inducement fault codes separate from the other
inducement categories. DEF level inducements
are based on the DEF level, the other inducement
categories are based on escalating time. The
escalating time inducements will always have an
associated fault code along with the inducement
fault code. The associated fault is the root cause.
The escalating time inducement fault code is just
an indicator of what level of inducement the
engine is in. The escalating time inducement fault
code also indicates how much time remains until
the next level of inducement. There are three
inducement categories that will trigger an
escalating time inducement fault code.
Note: The associated codes for each of the
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escalating time categories can be found in
Troubleshooting, SCR Warning System Problem.
• First Time When an escalating time inducement
fault code becomes active for the first.
• Repeat occurrence When any escalating time
inducement fault code becomes active again
within 40 hours of the first occurrence. Engine
must run for 40 hours without tripping any
escalating time inducement fault before returning
back to first occurrence times.
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• Safe Harbor Mode (Worldwide) Safe Harbor
Mode is a 20 minute engine run time period. Once
in level 3 inducement, the operator can perform a
key cycle and the engine will enter Safe Harbor
Mode. Safe Harbor Mode can only be
implemented once. Safe Harbor Mode is not
allowed for DEF level inducements with Worldwide
configuration.
World-Wide SCR Warning
• At Level 1 the emission malfunction lamp will be
on solid.
• At Level 2 the emission malfunction lamp will
flash.
• At Level 3 the emission malfunction lamp will flash
and the stop lamp will activate.
• At Level 3 the engine may shut down or operate at
1000 Revolutions Per Minute (RPM).
• At Level 3 cycling the keyswitch will give 20
minutes override at full power, before the
shutdown or idle is triggered. The emission
malfunction lamp will continue to flash.
SEBU9063-07