Hitachi ZW 550-6 Operator's Manual page 260

4. When aftertreatment device switch has been pressed,
screen (5) appears as shown to the right and manual
regeneration starts. The bar graph on the screen (6)
indicates regeneration progress.
f
NOTE: The manual regeneration cannot start unless the
following items are as indicated.
Item
Accelerator pedal
Forward/reverse switch
Parking switch
Control lever lock switch (4)
If any of the listed items are changed, or the key is turned
to the "OFF" position, the regeneration process will be
aborted. If the manual regeneration has been aborted, start
the process over again.
f
NOTE:
 The engine sound may change and the engine RPM may
increase when the manual regeneration starts. This is not
a malfunction.
 White smoke may temporarily be generated from the
tail pipe during the regeneration process. This is not a
malfunction.
 Coolant temperature may increase during the manual
regeneration.
 Regeneration period depends on the ambient
temperature.
 Just after machine operation, manual regeneration period
becomes shorter than when the engine temperature is low.
OPERATING THE MACHINE
Condition
UP (OFF)
Neutral
ON
ON
5-14
5
6
MNHG-01-283EN