Manitowoc Grove RT880E Service And Maintenance Manual page 237

RT880E SERVICE MANUAL
In addition to alerting the operator of system faults, the
Engine Warning Light, in conjunction with the Engine Stop
Light, is used in the diagnostic operation of the engine
control system.
NOTE: When not using the diagnostic system, turn the
Engine Diagnostic/Speed Control Switch to the
speed control position.
To check for active fault codes, the keyswitch must be in the
OFF position, and move the Engine Diagnostic/Speed
Control Switch to the engine diagnostic position. Turn the
vehicle keyswitch to the ON position. If no active fault codes
are recorded, both lamps stay off. If active fault codes are
recorded, both lamps will come on momentarily, then begin
to flash one code of the recorded faults.
Fault Code Flashing Sequence
The Engine Warning Light (amber) flashes at the beginning
of a fault code sequence. There will be a short 1- or 2-second
pause after which the number of the recorded fault code will
flash in the Engine Stop Light (red). To interpret the flash
code, count the first sequence of red flashes for the first digit
and after a two second delay, count the second sequence of
red flashes for the second digit. When the number has
finished flashing in red, the Engine Warning Light (amber)
flashes again. The lamps flash each fault code 3 times
before advancing to the next code. To skip to the next fault
code, move the Increment/Decrement Switch in either
+ -
position ( / ) to see other fault codes. If only one active fault
is recorded, the control system will continuously display the
same fault code when pressing the Increment/Decrement
Switch. Reference the engine manufacturers service manual
for explanation and correction of the fault codes.
Exhaust System Cleaning Indicator
The Exhaust System Cleaning Indicator is located in the
steering column gauge display. This indicator illuminates
amber when the Decomposition Tube is getting filled with
urea and needs to be cleaned out.
When the indicator illuminates or flashes, start the manual
exhaust system cleaning process at the next opportune time.
The indicator will be lit continuously during the early stages
of clogging. If the system continues to clog, the lamp will
begin to flash and slight engine derate will occur.
Grove
If even more clogging occurs, the engine warning light (14)
will illuminate in addition to the indicator (15) and severe
engine derate will occur.
During the exhaust system cleaning process the exhaust
bec omes ve ry ho t. Do n ot pa rk t he v ehic le near
flammable objects.
Use caution near the exhaust tailpipe during exhaust
system cleaning as it will become very hot.
The exhaust system cleaning process can take place in
three different modes:
Passive: the exhaust is hot enough during normal working
operation to burn off any accumulation.
Active: Active self-exhaust system cleaning occurs when
there is not sufficient heat in the exhaust to convert all the
urea being collected in the decomposition tube. Exhaust
temperatures are raised by injecting a small amount of fuel.
The resulting chemical reaction raises exhaust gas
temperatures high enough to remove the urea from the
decomposition tube. This is all done without any operator
intervention.
Manual: Manual, or stationary, exhaust system cleaning is
the same as active exhaust system cleaning but takes place
while the equipment is not being operated. It offers the
equipment operator the option, if needed, of performing
exhaust system cleaning outside the normal duty cycle.
Exhaust System Cleaning Switch
During the exhaust system cleaning process the exhaust
bec omes ve ry ho t. Do n ot pa rk t he v ehic le near
flammable objects.
Use caution near the exhaust tailpipe during exhaust
system cleaning as it will become very hot.
The Exhaust System Cleaning Switch is located on the right
side of the overhead control panel. This switch is a three
position switch, Inhibit Cleaning/Permit Cleaning/Start
Cleaning. Press this switch to start exhaust system cleaning
or to disable exhaust system cleaning:
• Start Exhaust System Cleaning
• Inhibit Exhaust System Cleaning
Published 11-10-2014, Control # 524-00
POWER TRAIN
WARNING
Extreme Heat Hazard!
WARNING
Fire or Burn Hazard!
7
(7649-10)
(7649-11)
7-5