Grove Published 3-25-2020, Control # 595-10 3-7
GRT8100 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
To manually clean, set the crane parking brake, the crane
transmission must be in neutral and have the brake and
throttle pedals released. Refer to “Exhaust System Cleaning
(Tier 4 Engines Only)” on page 7 for cleaning mode
definitions and a description of when manual cleaning is
needed.
Set up a safe area around the crane’s exhaust; remove tools,
rags, grease, or any debris from engine exhaust area.
With engine idling, push Cleaning Switch (8) to start manual
cleaning.
Within 5 seconds engine revolutions increase to 1000 -1400
rpm. The engine will continue to run at this speed for up to 45
minutes.
As a warning, strobe light (2, (Figure 3-5)) near exhaust pipe
(1, (Figure 3-5)) will flash during exhaust system cleaning.
Pressing brake or throttle pedal during cleaning or activating
the Inhibit Cleaning Switch will interrupt the manual cleaning
process.
Make sure crane and surrounding area are monitored during
manual cleaning. If any unsafe condition occurs, shut off
engine immediately.
Engine returns to normal idle speed when manual cleaning is
complete.
Exhaust System Cleaning
(Tier 4 Engines Only)
The Exhaust System Cleaning Required Indicator (24) is
located in the CCS display Figure 3-14. This indicator
illuminates amber when exhaust system requires cleaning.
When the DPF indicator illuminates or flashes, start the
manual cleaning process at the next opportune time.
The indicator will be illuminated continuously during the early
stages of required cleaning. If this condition continues, the
lamp will begin to flash and a slight engine derate will occur.
If this condition continues further, the Engine Warning light
(17) will illuminate in addition to the cleaning indicator (24)
and severe engine derate will occur.
The only way in either of these conditions can occur is if
cleaning has been inhibited or a manual cleaning was
interrupted.
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 not sufficient
heat in the exhaust 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.
Inhibit Exhaust System Cleaning
The Inhibit Exhaust System Cleaning Indicator (25) is
located in the CCS display Figure 3-14. When the Cleaning
Switch (8) Figure 3-4 is in the exhaust system cleaning
position, this amber indicator is illuminated and active and
manual exhaust system cleaning is prevented.
Diesel Exhaust Fluid (Tier 4 Engines Only)
The Diesel Exhaust Fluid (DEF) Indicator (6) Figure 3-14 is
located in the CCS display. The indicator has four different
stages which will be triggered by the fluid level sensor in the
DEF tank:
Low Tank - First warning reducing agent in the tank is low.
DEF Indicator (6) is lit continuously.
Derate - DEF Indicator (6) starts to flash as a warning that a
derate will be activated if reducing agent in the DEF tank is
not refilled.
Low Level Inducement - DEF Indicator (6) flashes and the
Engine Warning Indicator (17) is lit continuously. Derate is
activated.
Severe Inducement - Once the DEF tank is empty, the crane
operation will be restricted. The DEF Indicator (6) will flash
and the Stop Engine Indicator (16) is solid red.
WARNING
Extreme Heat Hazard!
During cleaning process exhaust and tailpipe become
very hot. Keep personnel and flammable objects away
from exhaust. Do not park vehicle near flammable
objects.
CAUTION
Engine Damage Hazard!
Ultra low sulfur diesel fuel is required in Tier 4 engines.
If “Ultra Low Sulfur” fuel is not used in engines that require
it, the Cummins warranty will be void. Engine
performance will quickly deteriorate and may stop
running.
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