Regeneration
NOTICE
Engine derate or shutdown
Terminating manually an automatic maintenance regeneration will leave residues in the aftertreat-
ment unit.
►
Repetitions of such action could cause an engine derate or, eventually, an engine shutdown.
►
Damage to the engine could occur.
The purpose of the Automatic Maintenance Regeneration is to burn the soot and DEF deposits inside
the Clean Emission Module (CEM) and to warm up the whole powertrain system at cold start.
■
When a regeneration is pending, the diesel engine rpm will not increase automatically for a re-
generation cycle. Instead, when the operator increases the engine speed above
1000/
min
(1000 rpm), the regeneration cycle will begin. Then the
1000/min
(1000 rpm) engine idle
speed is kept until the cycle is complete.
■
There is no problem to work with the vehicle during the cycle.
The Automatic Maintenance Regeneration activates when:
■
The engine coolant temperature reaches
40°C
(104°F) after an engine start with a coolant tem-
perature at or below
30°C
(86°F).
■
A predetermined amount of soot or DEF deposits has accumulated in the CEM.
■
The engine runs at idle for a long time (more than
1 h
).
The normal duration of an Automatic Maintenance Regeneration is about
17 min
, but it can be longer.
In order to deactivate the Automatic Maintenance Regeneration (“Auto-Regeneration mode inhibited”)
for an emergency or for a specific reason, use the controls on the vehicle display in the cab; do not
shutdown the engine unless an emergency occurs.
4
2
5
3
1
Figure 101: Aftertreatment indications on the display
Pos. Name
Description
1
REGENERATION PROC-
ESS PENDING
The DPF is in need of regeneration.
2
AUTO-REGENERATION
MODE INHIBITED
The auto-regeneration mode is manually turned off by the opera-
tor.
3
REGENERATION IN
PROGRESS
The HEST lamp is ON when a regeneration process is running or
if a regeneration process has just finished. DO NOT shut down
the engine when the HEST lamp is ON.
4
LOW AdBlue®/DEF LEV-
EL
The AdBlue®/DEF level is under
19 %
.
5
SYSTEM FAILURE
The EESF (Engine Emission System Failure) lamp is ON.
AdBlue®/DEF quality/Tampering/Dosing interruption
Snow groomer
BISON
Operating and Maintenance Manual
BISON 908930245 - 30367
11 - Maintenance
161
(
255
)
11.8
