Hitachi ZAXIS 30U-5N Operator's Manual page 157

6. When the regeneration is finished, "Regeneration Has
Completed." message will be displayed. If "Regeneration
Has Failed." message is displayed, start over the
regeneration process again. Failure of regeneration
process may happen in the conditions other than
above (such as malfunction of a sensor that affects
regeneration at low ambient temperature).
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NOTE:
 The engine sound may change and the engine speed may
increase when the manual regeneration starts, but it is not
a malfunction.
 Regeneration time varies depending on the ambient
temperature.
 White smoke may temporarily be generated from the tail
pipe during the regeneration process due to the burning of
particle matter (PM), but it is not a malfunction.
 Manual regeneration process completes earlier right after
the engine has been running than when it is cold.
 Coolant temperature may increase during the manual
regeneration.
IMPORTANT: If regeneration must be interrupted, push
the pilot control shut-off lever to UNLOCK position
or operate the engine control dial. The regeneration
process is aborted, but the machine becomes operable.
In this case, regeneration should be performed again.
Restart the manual regeneration as soon as possible.
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NOTE: When push muffler filter manual regeneration switch
(5) at the engine start, the regeneration does not start unless
the warm-up operation is performed for 15 to 20 minutes.
OPERATING THE MACHINE
5-15
5
MADG-01-004