44
LeeBoy 8520C Conveyor Paver 4-5
Operation
DPF Regeneration (REGEN)
When starting the engine, a sequence of screens will
display on the PV485 digital display unit on the operator
console. This digital unit displays operational informa-
tion, diagnostics and other controls for the machine.
It is important that the operator understand the Diesel
Particulate Filter (DPF) regeneration process before
operating the paver. DPF regeneration is the term given
to the cleaning process where the exhaust tempera-
ture is raised to safely burn off any soot and undesired
combustion gas. When the DPF lter reaches a soot
saturation level between 25 - 45 percent, the onboard
engine ECU (Engine Control Unit) will activate a regen-
eration cycle. The DPF icon on the PV485 digital
controller indicates the level of soot build-up on a scale
of Level 0 - 5 and changes color. Regeneration will
occur automatically at Level 1 - 2.
During normal operation, the DPF is cleaned automati-
cally. Under certain conditions, the operator may have
to instruct the control system to perform the cleaning
process. It is important to perform a parked, manual
regeneration BEFORE the engine reaches as high as
Level 4. If the DPF reaches Level 4 - 5, non-warranty
factory assistance from the engine manufacturer is
required.
Once the DPF cycle has been activated, it is important
not to shut off the engine as the regeneration cycle will
fail and could possibly damage the engine. The system
may attempt a second regeneration, but if it is unsuc-
cessful, the DPF lter is blocked more than 80 percent
and needs to be cleaned or replaced.
The engine speed will increase during regeneration
and there may be a noticeable sound difference. Once
regeneration is complete, the engine will return to
normal idle speed.
Don’t idle machine any longer than
necessary as too much idling can cause soot to build
up on the DPF, requiring more frequent regeneration.
There are several factors that affect how often your DPF
regenerates and the life expectancy of your DPF lter:
• Grade of engine oil.
• Grade of diesel fuel.
• Use of additives.
• Mileage.
• Wear of other components.
PV485 Powerview Display
Gauge ScreenGauge Screen
The PV485 digital controller Gauge Screen is the rst
screen to appear when starting the engine by default.
Warnings and alerts appear in the Alerts window at the
top of the screen. (Figure 4-3)
1
2
3
4
5
6
Soft Key Button Selections
7
Figure 4-3. Gauge Screen
1 - Alerts Window
2 - Exhaust Temperature
3 - Engine Speed/RPMs
4 - Soft Key Banner
5 - Engine Coolant Temperature
6 - Battery Voltage
7 - Hydraulic Oil Temperature
Pressing “soft key” buttons navigates to other screens.
Banner icons along the bottom of the screen corre-
spond with these buttons, and may change accordingly
as described on the following pages. Table 4-2 shows
the icons that appear on the banner with descriptions.
(Page 4-6)
• Pressing the Set Points button navigates to the Set
Point and Throttle Speed screen. (Page 4-6)
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