Operator`s manual

OPERATION
399
If the regeneration process is not delayed, the regeneration process
starts, the DPF Regeneration Request icon turns off and the High
Exhaust System Temperature (HEST) icon may illuminate. The HEST
icon is shown only at low speeds and elevated exhaust temperatures. It
will go out when the exhaust temperature goes below its threshold or
the truck increases speed above speed threshold. For parked
regenerations, the icon is illuminated during the regeneration process.
High Exhaust System Temperature
If the vehicle is in a location that may be hazardous
when regeneration begins (i.e., in close proximity to
flammable materials or gases, inside tunnels, parked
under flammable objects, etc.), the regeneration
should be stopped.
If regeneration is stopped by the vehicle operator, it
must be initiated at a later time when the vehicle is in a
safe location. Regenerations that are stopped and
never restarted at a later time, however, will require
that the vehicle be taken to an authorized Volvo Truck
dealer to have the regeneration manually started with
special service tools.
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