Ford F-650 2015 Owner's Manual page 100

Starting and Stopping the Engine
Regeneration
Unlike a normal filter that requires periodic replacement, the DPF can
regenerate, or clean itself, to maintain operating efficiency. The
regeneration process takes place automatically. A small increase in
engine or turbo sound level is normal during filter regeneration.
However, some driving conditions mean that you may need to support
the regeneration process:
• Operating in stop-and-go traffic or maintaining low speeds as in city
or delivery driving
• Frequent engine starting and stopping
• Relatively light vehicle payload
• Regular operation in cold ambient temperatures, such as below 0°F
(-18°C).
Diesel particulate filter four–level loading chart
Level and lamp
status
Level 1
solid
Level 2
flashing
(once per second)
Level 3
flashing + solid
Level 4
solid
2015 F-650/750 (f67)
Owners Guide gf, 2nd Printing, April 2014
USA (fus)
Filter status
Regeneration required.
Nearly full. Engine
performance is limited.
Full. Engine
performance is
increasingly limited.
Over full. Engine
performance is highly
limited. Continued
operation may result
in irreparable damage
to the filter.
99
Requested action
Drive on the highway
at highway speeds OR
start parked
regeneration to
prevent loss of engine
performance.
Perform parked
regeneration to
prevent loss of engine
performance.
Pull vehicle safely off
roadway, turn on
hazard flashers and
shut down engine as
soon as possible. Seek
service immediately.