Grove Published 3-23-2020, Control # 654-04 3-7
GRT655/655L OPERATOR MANUAL OPERATING CONTROLS
operation of functions due to bumping the controllers while
roading or any other operation.
Exhaust System Cleaning Switch
(Tier 4 Engine Only)
The Exhaust System Cleaning Switch (9, Figure 3-4) is
located on the right side of the overhead control panel. This
is a three position switch: Initiate Manual Cleaning/Permit
Active Cleaning/Inhibit Manual Cleaning.
The exhaust system cleaning process can take place in
three different modes:
• Passive: Exhaust is hot enough during normal working
operation to burn off any hydrocarbon (soot)
accumulation
•Active: Active cleaning occurs when there is insufficient
heat in the exhaust system to convert all the
hydrocarbon being collected in the DPF. Exhaust
temperatures are raised by injecting a small amount of
fuel. The resulting chemical reaction raises exhaust gas
temperatures high enough to oxidize the hydrocarbon
from the filter. This is done without operator intervention.
•Manual: Manual, or stationary cleaning is the same as
active cleaning but takes place when equipment is not
being operated. It allows the equipment operator to
perform cleaning outside the normal duty cycle.
When required, press the top of the switch to start the
manual cleaning process. Set the switch to the center
position to let the active cleaning process occur when
required. Press the bottom of the switch to inhibit (prevent)
the cleaning process from occurring.
• Manual Cleaning
(7649-10)
• Inhibit Cleaning (7649-11)
Refer to Exhaust System Cleaning, page 4-7 for information
regarding how and when to clean the exhaust system.
Inhibit Exhaust System Cleaning
The Inhibit Exhaust System Cleaning Indicator (31,
Figure 4-18 and Figure 4-19) is located on the Operator
Display Module (ODM). When the Cleaning Switch (9,
Figure 3-4) is in the inhibit exhaust system cleaning position,
this amber indicator is on and active and manual exhaust
system cleaning is prevented.
WARNING
Burn/Fire Hazard!
During the cleaning process, the exhaust and tailpipe
become very hot. Keep personnel and flammable objects
away from the exhaust. Do not park vehicle near
flammable objects.
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