Doosan 12/154, Operation & Maintenance Manual

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54 OPERATING INSTRUCTIONS
12/154
Diesel After treatment Device specific lights
1. HEST Lamp
High Exhaust System Temperature
• Lights when the engine is in an active regeneration phase.
• Higher-than-normal exhaust temperatures may exist due to active
DPF regeneration.
• Operator should make sure the exhaust pipe outlet is not directed
at any surface or material that may become hazardous.
2. DPF Lamp
Regeneration required
• Lights when the DPF is approaching the need for regeneration.
• Operator should check to make sure the Regeneration Control
Switch is in Normal Position.
• Operator can continue to use the compressor.
3. Diesel Exhaust Fluid (DEF) Lamp
• The Diesel Exhaust Fluid Lamp alerts the operator that the DEF is
low and SHOULD be replenished.
• When DEF level comes below 10%, DEF LED goes ON (LED on
DEF gauge), the operator should now add DEF fluid.
• When DEF level comes below 5%, DEF LED starts flashing, engine
de-rate power for 25% and unit probably shut of due to engine over
load.
• When DEF level comes to 0%, DEF LED keeps flashing, engine will
stop.
4. Regeneration Inhibit
• Lights when the DPF is prevented from starting active regeneration.
Prolonged running with this switch in Regeneration Disable Position
will cause the DPF filter to plug and could potentially require the DPF
to be removed for cleaning.
• This position should only be used when the compressor is to be
utilized in hazardous environments (Petrochemical, chemical , others).
Regeneration Control Switch
The regeneration inhibit switch controls the regeneration of the
diesel particulate filter. When the switch is turned to the NORMAL
position (0), the engine ECM will automatically perform the
regeneration of the diesel particulate filter when the soot reaches a
high level.
When the switch is turned to the INITIATE position (Right), a
request is sent to the engine ECM for a manual regeneration of the
diesel particulate filter. This manual regeneration will only happen
when the machine is in a non-mission condition and DPF soot levels
are high enough to allow regeneration.
When the switch is turned to the DISABLE position (Left), the
engine ECM disallows any automatic or manual (non-mission)
regeneration of the diesel particulate filter.
Normal Operation – Passive regeneration:
Passive regeneration occurs during most of equipment operating
time to remove PM soot from the Diesel Particulate Filter. Exhaust
temperatures remain normal and no lamps will be illuminated. There is
no impact on equipment performance or operation.
Active regeneration is automatically pre-set to initiate at 96-hour
engine run time intervals by the engine ECM to remove PM soot
build-up. When active regen is underway, this may be indicated by the
HEST lamp.
Normal Operation – Active regeneration:
HEST Lamp Turns ON (temperature dependent activation).
Indicates an active regen in progress and higher than normal
exhaust temperatures may occur for typically 15 minutes . The HEST
lamp will activate according to temperature level set by the OEM.
No operator intervention or action is required.
Equipment works as normal. There maybe a slight increase in
engine noise with a change to the sound of the turbocharger. Surface
temperature of the DPF will elevate.
NOTE: Switch returns from INITIATE position to NORMAL position
automatically.
Regeneration NORMAL
position
Regeneration
DISABLE position
Regeneration
INITIATE position