Isuzu NPR 2008 Owner's Manual page 76

55702_Sec02-2_'08 08.2.12 9:46 AM Page 48
The Diesel Particulate Filter (DPF) is the system which purifies
Particulate Matter (PM) in the exhaust gas. This collects PM into the
DPF and regenerates the filter (burns PM) automatically.
Always use diesel fuel. Use of low quality fuel may adversely affect
the engine parts and cause failure. Use of other than specified fuel
may adversely affect the engine or emission control system and cause
failure. Especially for the common rail type engine, always use ultra
low sulfur diesel fuel (15 ppm or less of sulfur content).
If other than specified diesel fuel is used on a vehicle with a DPF,
the vehicle may not conform to emission regulations.
Do not modify the DPF or exhaust pipe.
Modification of the direction, length or diameter of the exhaust pipe
will adversely affect the exhaust gas purification system.
If modification to equipment is needed, contact your Isuzu dealer.
A u t o m a t i c r e g e n e r a t i o n m a y n o t c o m p l e t e i n s o m e c a s e s o f
operating and driving patterns and conditions. In the event of this, the
DPF indicator (amber or red) will come on.
Depending on the driving conditions, Automatic Regeneration may
not complete, in the event of this, the DPF indicator light comes on in
amber or in red.
When the DPF indicator light lights in amber, perform regeneration
according to the Regeneration Procedures below as soon as possible.
When the DPF indicator light lights in red, perform regeneration
immediately. (This is to restore the DPF function and it is not a
malfunction.)
CAUTION:
This content is to restore the function of the DPF and it is not a
malfunction.
However, the Check engine malfunction indicator light may come
on and the power output may be limited if driving or PTO (POWER
TAKE-OFF) operation is continued for a long time with the amber
or red DPF indicator on.
This is to prevent the DPF from being damaged.
When operating PTO during parking, check to ensure that the
amber or red DPF indicator on the instrument panel is not on.
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