This manual is furnished with each new TENNANT Model Centurionr. It provides necessary operating
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and preventive maintenance instructions. Read this manual completely and understand the machine
before operating or servicing it.
This machine will provide excellent service. However, the best results will be obtained at minimum
costs if:
DThe machine is operated with reasonable care.
DThe machine is maintained regularly -- per the maintenance instructions provided.
DThe machine is maintained with TENNANT supplied or equivalent parts.
Manual Number -- 331020
Revision: 02
Published: 9--05
CALIFORNIA PROPOSITION 65 WARNING: Engine exhaust from this product contains
chemicals known to the State of California to cause cancer, birth defects, or other
reproductive harm.
Thermo Sentryris a United States trademark of Tennant Company.
Streetsmartris a United States trademark of Tennant Company.
Copyright E 2003, 2004, 2005 TENNANT, Printed in U.S.A.
CONTENTS
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CONTENTS
Page
SAFETY PRECAUTIONS4...................
OPERATION8..............................
OPERATOR RESPONSIBILITY8...........
MACHINE COMPONENTS9...............
CONTROL PANEL SYMBOLS10...........
CONTROLS AND INSTRUMENTS1 1.......
RIGHT HAND STEERING
INSTRUMENT CONSOLE11.........
UPPER CONTROL PANEL
SWITCHES (002001--002999)12......
UPPER CONTROL PANEL
SWITCHES (003000--)13.......
CENTER CONTROL PANEL
SWITCHES (002001--002999)14......
CENTER CONTROL PANEL
SWITCHES (003000--)15.......
TOUCH PANEL16.....................
OPERATION OF CONTROLS17..............
IGNITION SWITCH17.....................
PARKING BRAKE KNOB17................
OPERATOR CONTROL SWITCH17........
REAR AXLE SHIFT CONTROL
SWITCH18...........................
HEATED MIRROR SWITCH (OPTION)18...
PUSHBUTTON RANGE SELECTOR18.....
CRUISE CONTROL/THROTTLE LOCK19...
PTO KILL SWITCH19.....................
REAR WORK LIGHT SWITCH
(OPTION)20..........................
HOPPER WORK LIGHT SWITCH
(OPTION)20..........................
RIGHT SIDE INSTRUMENT
CONSOLE20..........................
TACHOMETER21........................
HOURMETER21.........................
SPEEDOMETER21.......................
ENGINE OIL PRESSURE GAUGE22.......
ENGINE COOLANT TEMPERATURE
GAUGE22............................
VOLTMETER22..........................
FUEL LEVEL GAUGE23..................
AIR BRAKE PRESSURE GAUGE23........
BRIGHT HEADLIGHTS LIGHT23...........
PREHEAT LIGHT24......................
SIGNAL LIGHT24........................
TOUCH PANEL24........................
CONTRAST ADJUSTMENT KNOB24.......
START UP SCREEN25....................
DISPLAY CLOCK25......................
PTO HOURMETER25.....................
BRUSH HOURMETER26..................
MORE SWITCH26........................
PTO SWITCH27..........................
FAST IDLE27...........................
Page
SWEEP SWITCH28......................
SWEEP MODE SWITCH29................
SUPER SWEEP SWITCH29...............
MAIN BROOM WEAR INDICATOR29.......
WATER FLOW SWITCH30................
WATER TANK LEVEL GAUGE30...........
FILTER SHAKER SWITCH31..............
VACUUM FAN SWITCH32.................
LEFT SIDE GUTTER BROOM SWITCH
(OPTION)32..........................
RIGHT SIDE GUTTER BROOM
SWITCH32...........................
HOPPER UP SWITCH33..................
HOPPER DOWN SWITCH33..............
HOPPER DUMP SWITCH34...............
HOPPER HOME SWITCH34...............
CONVEYOR IN SWITCH35................
CONVEYOR FORWARD SWITCH35.......
CONVEYOR REVERSE SWITCH35........
CONVEYOR OUT SWIT CH36.............
CONVEYOR WATER SPRAY SWITCH36...
FRONT WATER SPRAY SWITCH37........
LEFT SIDE WATER SPRAY SWITCH37.....
RIGHT SIDE WATER SPRAY SWITCH37...
FUSES38...............................
LEFT SIDE GUTTER BROOM TILT
SWITCH (OPTION)39..................
RIGHT SIDE GUTTER BROOM TILT
SWITCH (OPTION)39..................
GUTTER BROOM SPEED/PRESSURE
ADJUSTMENT (OPTION)39............
REVOLVING LIGHT SWITCH
(OPTION)40..........................
GUTTER BROOM LIGHT SWITCH
(OPTION)40..........................
LATCHES40.............................
HOPPER TILT SUPPORT BAR41..........
HOPPER LIFT SUPPORT BARS41.........
ALARMS42.................................
HOPPER UP ERROR ALARM42...........
CONVEYOR NOT BACK ALARM42........
CONVEYOR STALL ALARM42.............
HOPPER FIRE ALARM43.................
TANK LOW, PUMP OFF ALARM43.........
REDUCE ENGINE RPM ALARM43.........
CHECK HYDRAULIC FILTER ALARM44....
ACTIVATE PARK BRAKE ALARM44........
ERROR--BROOMS DOWN ALARM44.......
SHAKE FILTER ALARM45.................
OVERSPEED ENGINE ALARM45..........
RELEASE E--STOP ALARM45.............
MACHINE NOT LEVEL ALARM46..........
HYDRAULIC FLUID LOW ALARM
(OPTION)46..........................
Centurion 331020 (9-- 05)
1
CONTENTS
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Page
HOW THE MACHINE WORKS47..............
PRE AND POST OPERATION
CHECKLIST48...........................
STARTING THE MACHINE49.................
SWEEPING AND BRUSH INFORMATION51...
SWEEP MODES52.......................
SETTING THE CUSTOM MODE54.........
FILLING THE WATER TANK55.............
SWEEPING57...........................
STOP SWEEPING59.....................
EMPTYING THE HOPPER60..............
STOPPING THE MACHINE62.............
OPERATION ON INCLINES63.............
ENGAGING HOPPER TILT SUPPORT
BAR64...............................
DISENGAGING HOPPER TI LT
SUPPORT BAR66.....................
ENGAGING HOPPER LIFT SUPPORT
BARS68..............................
DISENGAGING HOPPER LIFT
SUPPORT BARS70....................
MACHINE TROUBLESHOOTING72........
MACHINE TROUBLESHOOTING73........
MAINTENANCE74..........................
MAINTENANCE CHART75................
LUBRICATION77.........................
HOPPER LIFT/TILT77..................
ENGINE77...........................
GUTTER BROOM SUPPORT
RODS78...........................
GUTTER BROOM SUPPORT
ARMS78...........................
GUTTER BROOM PIVOT78............
DUST CONTROL SKIRT CYLINDER
(OPTION)79.......................
DUST CONTROL SKIRT PIVOTS
(OPTION)79.......................
DUST CONTROL BUMPER PIVOTS
(OPTION)79.......................
MAIN BRUSH SUPPORT ARMS80......
MAIN BRUSH IDLER BEARING80.......
DRAG SHOE PIVOT80.................
MAIN BRUSH LIFT CYLINDER81.......
DRAG SHOE LIFT CYLINDER81........
MAIN BRUSH AND DRAG SHOE
CYLINDERS81.....................
CONVEYOR BEARINGS82.............
CONVEYOR LIFT PIVOTS82...........
CONVEYOR LIFT CYLINDERS82.......
CONVEYOR TILT CYLINDER83.........
DRY DUST CONTROL SKIRT WING
PIVOTS (OPTION)83...............
PROPULSION SHAFT SLIP JOINT83....
AUTO LUBE (OPTION)84..............
Page
HYDRAULICS85.........................
HYDRAULIC FLUID RESERVOIR85.....
HYDRAULIC FLUID86.................
HYDRAULIC PUMP LOAD SENSE
FILTERS87........................
CHECKING THE LOAD SENSE
FILTERS87........................
HYDRAULIC FLUID FILTER88..........
HYDRAULIC COOLING SYSTEM88.....
HYDRAULIC HOSES88................
ENGINE89..............................
ENGINE89...........................
AIR FILTER RESTRICTI ON
INDICATOR89......................
RADIATOR89.........................
TRANSMISSION90.......................
TRANSMISSION ACCESS90...........
REMOVING DRY DUST
CONTROL ASSEMBLY90.........
WET DUST CONTROL SYSTEM94.........
WATER TANK94.......................
WATER PUMP94......................
WATER FILTER95.....................
WATER HOSES95.....................
SPRAY NOZZLES95...................
DEBRIS HOPPER96......................
THERMO SENTRY96..................
HOPPER DUST FILTER96..............
RINSING THE HOPPER DUST
FILTER97..........................
TO REMOVE OR REPLACE
HOPPER DUST FILTER98...........
CONVEYOR100.........................
ADJUSTING THE CONVEYOR
HEIGHT101.......................
FLUSHING THE CONVEYOR
BELT102..........................
ADJUSTING THE CONVEYOR BELT
TRACKING103....................
TO REPLACE THE CONVEYOR
BELT105.........................
BRUSHES108...........................
MAIN BRUSH108.....................
TO REPLACE THE MAIN BRUSH108...
TO CHECK AND ADJUST MAIN
BRUSH PATTERN112...............
GUTTER BROOM(S)113...............
TO REPLACE THE GUTTER
BROOM(S)113.....................
TO CHECK AND ADJUST THE
GUTTER BROOM PATTERN114.....
MAIN BRUSH AND DRAG SHOE CABLE
AND ARM STOPS116..................
TO CHECK MAIN BRUSH ARM
STOPS116......................
2
Centurion 331020 (9-- 05)
TO ADJUST MAIN BRUSH ARM
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STOPS117......................
TO CHECK AND ADJUST DRAG
SHOE CABLES118..............
TO CHECK AND ADJUST DRAG
SHOE ARM STOPS119...........
SKIRTS AND SEALS120.................
BRUSH COMPARTMENT SIDE
SKIRT120.........................
BRUSH COMPARTMENT REAR
SKIRT120.........................
TOP CONVEYOR SKIRTS120.........
BOTTOM CONVEYOR SKIRTS121.....
HOPPER CHUTE DOOR SKIRT121....
HOPPER CHUTE DOOR SEALS121....
HOPPER ACCESS DOOR SEAL122....
HOPPER FILTER COVER SEAL122....
VACUUM DUCT SEALS
(OPTION)122.....................
ACCESS PANEL DUST SKIRTS
(OPTION)123.....................
FRONT DRY DUST CONTROL
SKIRTS (OPTION)123..............
CENTER DRY DUST CONTROL
SKIRT (OPTION)123...............
REAR DRY DUST CONTROL
SKIRTS (OPTION)124..............
DRY DUST CONTROL WING
SKIRTS (OPTION)124..............
DRY DUST CONTROL GUTTER
BROOM SKIRT(S) (OPTION)124....
MAIN BRUSH DRAG SHOES125.......
MACHINE JACKING126...............
STORING MACHINE126..............
FREEZE PROTECTION FOR WET
DUST CONTROL SYSTEM126...
TRANSPORTING THE MACHINE128...
SPECIFICATIONS129......................
GENERAL MACHINE DIMENSIONS/
CAPACITIES129......................
GENERAL MACHINE
PERFORMANCE130..................
POWER TYPE130.......................
TRANSMISSION FLUID130...............
STEERING130..........................
HYDRAULIC SYSTEM131................
BRAKING SYSTEM131..................
MACHINE DIMENSIONS131..............
INDEX133.................................
CONTENTS
Page
Centurion 331020 (9-- 05)
3
SAFETY PRECAUTIONS
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SAFETY PRECAUTIONS
The following precautions are used throughout
this manual as indicated in their description:
WARNING: To warn of hazards or
unsafe practices which could result in
severe personal injury or death.
FOR SAFETY: To identify actions which
must be followed for safe operation of
equipment.
The machine is suited to sweep disposable
debris. Do not use the machine other than
described in this Operator Manual.
The following information signals potentially
dangerous conditions to the operator or
equipment:
WARNING: Burn Hazard. Hot Surface.
Do Not Touch.
WARNING: Raised hopper may fall.
Engage hopper support bar.
WARNING: Tilted hopper may fall.
Engage hopper support bar.
WARNING: Brush linkage pinch points.
Stay clear when linkage is moving.
WARNING: Side brush can move. Do
not step on side brush.
WARNING: High dump vertical
clearance. Stay clear of overhead
obstructions and power lines.
WARNING: Conveyor throws debris.
Conveyor pinch point. Stay clear when
in operation.
WARNING: Flammable materials can
cause explosion or fire. Do not use
flammable materials in tank. Only use
water.
WARNING: Lift arm pinch point. Stay
clear of hopper lift arms.
WARNING: Engine emits toxic gases.
Severe respiratory damage or
asphyxiation can result. Provide
adequate ventilation. Consult with your
regulatory agency for exposure limits.
Keep engine properly tuned.
WARNING: Rotating PTO Shaft.
Never Get Under Machine If Engine
Is Running.
FOR SAFETY:
1. Do not operate machine:
-- Unless trained and authorized. This
machine requires an updated
Commercial Drivers License for
operation.
-- Unless all TENNANT and truck
manuals are read and understood.
-- In flammable or explosive areas.
2. Before starting machine:
-- Check for fuel leaks.
-- Keep sparks and open flame away
from refueling area.
-- Make sure all safety devices are in
place and operate properly.
-- Check brakes and steering for proper
operation.
3. When using machine:
-- Use brakes to stop machine.
-- Go slow on inclines and slippery
surfaces.
-- Use care when reversing machine.
-- Do not move machine when hopper is
raised.
-- Only dump the hopper on a level
surface.
-- Make sure adequate clearance is
available before raising hopper.
-- Do not carry riders on machine.
-- Always follow safety and traffic rules.
-- Report machine damage or faulty
operation immediately.
4. Before leaving or servicing machine:
-- Stop on level surface.
-- Set parking brake.
-- Turn off machine and remove key.
WARNING: Loss Of Steering Control
Can Result. Stop Machine And Place In
Neutral Before Switching Operator
Control.
4
Centurion 331020 (11--03)
5. When servicing TENNANT sweeping
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components:
-- Avoid moving parts. do not wear loose
jackets, shirts, or sleeves.
-- Block machine tires before jacking
machine up.
-- Jack machine up at designated
locations only. Block machine up with
jack stands.
-- Use hoist or jack that will support the
weight of the machine.
-- Wear eye and ear protection when
using pressurized air or water.
-- Disconnect battery connections before
working on machine.
-- A void contact with battery acid.
-- Keep flames and sparks away from
fuel system service area. Keep area
well ventilated.
-- Use cardboard to locate leaking
hydraulic fluid under pressure.
-- Use Tennant supplied or approved
replacement parts.
SAFETY PRECAUTIONS
6. When loading/unloading machine
onto/off truck or trailer:
-- Turn off machine.
-- Use truck or trailer that will support
the weight of the machine.
-- Set parking brake after machine is
loaded.
-- Block machine tires.
-- Tie machine down to truck or trailer.
Centurion 331020 (11--03)
5
SAFETY PRECAUTIONS
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The following safety labels are mounted on the
machine in the locations indicated. If these or any
label becomes damaged or illegible, install a new
label in its place.
FOR SAFETY LABEL -Located on the upper console.
HOT SURFACE LABEL -Located on the side of
the hydraulic tank.
BRUSH LINKAGE LABEL -Located on each main brush lift
arm, gutter broom and next to
main brush lift cylinders.
ROTATING PTO SHAFT LABEL -Located on the upper console
and on the side of the machine.
6
SIDE BRUSH LABEL -Located on top of the side
brush(es).
HIGH DUMP LABEL -- Located on the
upper console and on the side of the machine.
Centurion 331020 (11--03)
SAFETY PRECAUTIONS
VEY
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CON
Located on each side of the conveyor.
LIFT ARMS LABEL (High Dump) -Located on the side of the hopper lift.
OR LABEL --
HOPPER SUPPORT BAR LABEL
(Low Dump) -- Located on both sides
of the scissor lift in the lower rail.
FLAMMABLE MATERIALS LABEL -Located on the right side of the machine
behind the water hose shields.
HOPPER SUPPORT BAR LABEL
(High Dump) -- Located on both sides
of the scissor lift in the lower rail.
Centurion 331020 (11--03)
OPERATOR CONTROL SWITCH LABEL -Located on the control panel between the
operator seats.
7
OPERATION
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OPERATOR RESPONSIBILITY
- The operator is responsible for conducting
daily maintenance and checkups and
keeping the machine in good working
condition. The operator must inform the
service mechanic or supervisor when the
required maintenance intervals occur as
stated in the MAINTENANCE section of this
manual.
- This machine requires a Commercial Drivers
License for operation. Keep updated with all
licenses and machine operation training.
- Read this manual carefully before operating
this machine. Review all of the training
materials supplied with the machine.
FOR SAFETY: Do not operate machine,
unless operation manual is read and
understood.
OPERAT ION
- Check the machine for shipping damage.
Check to make sure machine is complete
per shipping instructions.
- Keep the machine regularly maintained by
following the maintenance information in this
manual and all other truck manuals supplied
with the machine. We recommend taking
advantage of a regularly scheduled service
contract from your TENNANT
representative.
- Order parts and supplies directly from an
authorized TENNANT representative. Use
the parts manual provided when ordering
parts.
- The model CENTURIONt has a GVWR of
14,850 kg (33,000 lb), 4536 kg (12,000 lb)
front axle and 9450 kg (21,000 lb) rear axle.
Operate only on surfaces capable of
supporting this weight.
07324
8
Centurion 331020 (11--03)
MACHINE COMPONENTS
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OPERATION
AB
L
C
D
J
I
E
F
G
H
K
A.Conveyor
B.Dust Filters
C.Vacuum Fan
D.Hopper
E.Cab
F.Diesel Engine
G.Fuel Tank
H.Hopper Door
I.Hopper Lift
J.Gutter Brooms
K.Main Brush
L.Water Tank
Centurion 331020 (11--03)
9
OPERATION
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CONTROL PANEL SYMBOLS
These symbols identify controls and displays on
the machine:
A.Open
B.Rear Work Light
C.Hopper Work Light
D.PTO (Power Take Off) Kill Switch
E.Left Side Gutter Broom Tilt Switch (Option)
F.Op en
G.Revolving Light Switch (Option)
H.Gutter Broom Work Lights
I.Right Side Gutter Broom Tilt Switch (Option)
12
Centurion 331020 (9-- 05)
OPERATION
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A
E
F
A.Open
B.Hopper Work Light
C.Rear Work Light
D.PTO (Power Take Off) Kill Switch
E.HVAC Controller
F.Ra d io
B
UPPER CONTROL PANEL SWITCHES (003000 --)
C
D
Centurion 331020 (9-- 05)
13
OPERATION
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AB
C
D
E
F
G
CENTER CONTROL PANEL SWITCHES (002001--002999)
A.Rear Axle Shift Control Switch
B.Heated Mirror Switch (option)
C.Pushbutton Range Selector Digital Display
D.Pushbutton Range Selector
E.Ignition Switch
F.Operator Control Switch
G.Parking Brake Knob
A.Display Screen
B.Multi--Function Switches (6)
C.Front Spray Nozzle Switch
D.Right Side Gutter Broom Spray Nozzle Switch
E.Conveyor Spray Nozzle Switch
F.Left Side Gutter Broom Spray Nozzle Switch (Option)
G.Right Side Gutter Broom Switch
H.Left Side Gutter Broom Switch (Option)
I.PTO (Power Take Off) Switch
J.Sweep Switch
K.Contrast Adjustment Knob
E
G
B
B
B
F
C
D
K
16
Centurion 331020 (7-- 04)
OPERATION OF CONTROLS
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IGNITION SWITCH
The ignition switch starts and stops the truck
engine with a key. Refer to the truck manuals for
proper operation.
FOR SAFETY: Do not operate machine
unless all TENNANT and truck manuals
are read and understood.
PARKING BRAKE KNOB
The parking brake knob sets and releases the
machine parking brake. Refer to the truck
manuals for proper operation.
OPERATION
FOR SAFETY: Do not operate machine
unless all TENNANT and truck manuals
are read and understood.
OPERATOR CONTROL SWITCH
The operator control switch transfers the throttle
and power steering controls from one side of the
operator’s compartment to the other. It also turns
on the side instrument console.
Activate Right Side Controls: Press the right side
of the switch.
Activate Left Side Controls: Press the left side of
the switch.
WARNING: Loss Of Steering Control
Can Result. Stop Machine And Place In
Neutral Before Switching Operator Control.
Centurion 331020 (7-- 04)
17
OPERATION
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REAR AXLE SHIFT CONTROL SWITCH
The rear axle shift control switch controls the rear
axle operating range. Refer to the truck manuals
for proper operation.
FOR SAFETY: Do not operate machine
unless all TENNANT and truck operation
manuals are read and understood.
NOTE: For best slow speed sweeping results,
drive the machine in D1 (first gear) with the rear
axle in low range.
NOTE: To engage the low range on t he rear
axle, park the machine on level gr ound, and
select low range.
HEATED MIRROR SWITCH (OPTION)
The heated mirror switch controls the heated
mirror option. Refer to the truck manuals for
proper operation.
FOR SAFETY: Do not operate machine
unless all TENNANT and truck operation
manuals are read and understood.
PUSHBUTTON RANGE SELECTOR
The pushbutton range selector is used to select
the different operating gears and D (Drive)
ranges. The digital display shows what gear or
operating range the truck is in. Refer to the truck
manuals for proper operation.
FOR SAFETY: Do not operate machine
unless all TENNANT and truck operation
manuals are read and understood.
NOTE: For best slow speed sweeping results,
drive the machine in D1 (first gear) with the rear
axle in low range.
NOTE: To engage the low range on the rear axle,
park the machine on level ground, and select low
range.
18
Centurion 331020 (9-- 05)
CRUISE CONTROL/THROTTLE LOCK
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The cruise control/throttle lock functions as a
normal cruise control when the PTO is not
engaged and functions as a throttle lock when the
PTO is engaged.
The cruise control function locks the machine to
a desired speed and does not work at speeds
below 25 MPH (40 km/h). Refer to the truck
operation manual to operate the cruise control
function.
The throttle lock locks the engine to a desired
RPM. To operate the throttle lock, press the
sweep switch to engage the PTO. Then the
throttle lock operates the same as the cruise
control function with the exception of it locking the
engine RPM instead of the machine speed. Refer
to the Cruise Control section of the truck
operation manual for more details.
OPERATION
NOTE: When the THROTTLE LOCK is operating
at a higher RPM (approx 1800--2200) the
transmission can shift and increase the vehicle
speed.
FOR SAFETY: Do not operate machine
unless all TENNANT and truck operation
manuals are read and understood.
PTO KILL SWITCH
The PTO kill switch halts all power to the power
take off shafts, sweeping functions and hopper lift
functions.
Halt PTO shafts: Push the center of the PTO killswitch in until the switch ’clicks’ and remains down
in the engaged position. The touch panel will
display the release E--Stop alarm, and the switch
will illuminate while engaged.
Restart PTO shafts: Push the center of the PTOkill switch in until the switch ’clicks’, and release
the switch in the disengaged position. The light
will turn off and the touch panel will return to the
idle startup screen when the switch is disengaged.
Press the sweep switch or PTO switch to restart
the PTO shafts.
Centurion 331020 (11--03)
19
OPERATION
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REAR WORK LIGHT SWITCH (OPTION)
The rear work light switch powers on and off the
rear work light.
On: Press the top of the rear work light switch.
The rear work light will come on.
Off: Press the bottom of the rear work lightswitch. The rear work light will turn off.
HOPPER WORK LIGHT SWITCH (OPTION)
The hopper work light switch powers on and off
the hopper work light.
On: Press the top of the hopper work light switch.
The hopper work light will come on.
Off: Press the bottom of the hopper work lightswitch. The hopper work light will turn off.
RIGHT SIDE INSTRUMENT CONSOLE
The right side instrument console is activated by
the operator control switch, and displays the
gauges for the machine operator sitting in the
right side operator’s compartment.
20
Centurion 331020 (11--03)
TACHOMETER
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The tachometer shows the engine RPM. Increase
or decrease the throttle until the tachometer
shows the desired engine RPM for transporting or
sweeping.
NOTE: The REDUCE ENGINE RPM ALARM will
sound and appear if the engine speed is greater
than 950 RPM when starting the sweeping
system.
NOTE: The OVERSPEED, ENGINE ALARM will
sound and appear if the engine speed becomes
greater than 2200 RPM while sweeping.
There are three engine speed displays; Idle
Speed, Low Speed and Full Power. The displays
are shown on the bottom of the display panel, and
are used to help maintain the proper engine
speeds while using the different sweeping modes.
IDLE SPEED -- < 950 RPM
LOW SPEED -- 950 to 1175 RPM
StreetSmart
10:45
00000
00000
system
IDLE SPEED
OPERATION
MORE
FULL POWER -- > 1175 RPM
Refer to the SWEEP MODES section of the
manual for the recommended engine speeds of
each sweeping mode.
HOURMETER
The hourmeter records the number of hours the
machine has been operated. Use this information
to determine machine maintenance intervals. The
hourmeter is located on the bottom of the
tachometer gauge.
SPEEDOMETER
The speedometer displays the machine’s travel
speed. Use this for determining the proper
operating speed for sweeping and transporting.
Centurion 331020 (11--03)
21
OPERATION
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ENGINE OIL PRESSURE GAUGE
The engine oil pressure gauge displays the engine
oil pressure. If the oil pressure f alls too low, stop
the engine, locate the problem and have it
corrected. Refer to the ENGINE OIL section of
the truck manuals for proper operation.
ENGINE COOLANT TEMPERATURE GAUGE
The engine coolant temper. If the engine coolant
temperature is too hot, or if the engine coolant
temperature gauge warning light comes on, stop
the engine, locate the problem and have it
corrected. Refer to the COO LING SYSTEM
section of the truck manuals for proper operation.
VOLTMETER
The voltmeter displays the existing voltage of the
battery. Normal voltage ranges between 12--14.5
volts. If the voltage falls too low, stop operating
the machine, locate the problem and have it
corrected.
22
Centurion 331020 (11--03)
FUEL LEVEL GAUGE
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The fuel level gauge indicates how much fuel is in
the fuel tank.
NOTE: Do not let the fuel tank empty completely.
Air can enter the fuel system and require
bleeding, before the next engine start.
AIR BRAKE PRESSURE GAUGE
The air brake pressure gauge displays the air
brake reservoir pressure. If the air brake pressure
drops too low, an alarm will sound and the parking
brake will apply. Stop the machine, locate the
problem, and have it corrected. Refer to the AIRBRAKE section of the truck manuals for proper
operation.
OPERATION
NOTE: An audible alarm will sound when the
machine is started, until the brake reservoir
pressure reaches the minimum tank pressure
required to release the parking brake.
BRIGHT HEADLIGHTS LIGHT
The bright headlights light comes on when the
headlights are on the bright setting.
Centurion 331020 (7-- 04)
23
OPERATION
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PREHEAT LIGHT
The preheat light comes on when the ignition
switch is turned to the ON position. The light will
go out when the engine is ready to start, usually 5
to 30 seconds depending on the weather
conditions.
SIGNAL LIGHT
The signal light arrows flash when the turn signals
are used or when the 4--way warning lights are
on.
TOUCH PANEL
The touch panel contains the switches that control
the PTO, hopper and sweeping functions. It is
located on top of the console in the center of the
cab.
CONTRAST ADJUSTMENT KNOB
The contrast adjustment knob adjusts the contrast
on the display.
Adjust: Turn knob as necessary to adjust the
contrast on the display .
24
Centurion 331020 (7-- 04)
START UP SCREEN
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The START UP screen appears on the display
screen when the machine is started. It displays
the display clock, hourmeter and the MORE
switch.
DISPLAY CLOCK
The display clock appears on the START UP
screen above the hourmeter, and shows the time
of day.
StreetSmart
10:45
00000
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OPERATION
system
MORE
PTO HOURMETER
The PTO hourmeter appears on the START UP
screen, and records the number of hours the
power take offs have been operating. Use this
information to determine machine maintenance
intervals.
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10:45
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StreetSmart
10:45
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system
MORE
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Centurion 331020 (11--03)
25
OPERATION
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BRUSH HOURMETER
The brush hourmeter appears on the START UP
screen, and records the number of hours the main
broom has been operating. Use this information to
determine machine maintenance intervals.
The display clock and brush hourmeter can
be set with the time adjust/brush hour resetscreen. Continue pressing the more switch to
cycle through the six operating screens until the
time adjust/brush hour reset screen appears.
Adjust the time using the buttons on either side of
the display panel.
StreetSmart
10:45
00000
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system
MORE
RESET BRUSH HR
MORE SWITCH
The MORE switch appears on the START UP
screen and the three operating screens. Press the
switch once to cycle to the next screen. The
switch will continue cycling through the five
screens each time it is pressed.
ADJUST TIME
StreetSmart
10:45
00000
00000
MORE
system
MORE
26
Centurion 331020 (11--03)
PTO SWITCH
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The PTO switch controls the power take off. The
PTO drives the sweeping assembly and the
hopper lift. When the PTO is activated, the engine
idle speed will raise from 600 RPM to 850 RPM.
Keep the engine RPM below 950 RPM when
activating the PTO switch.
NOTE: The REDUCE ENGINE RPM ALARM will
sound and appear if the engine speed is greater
than 950 RPM when the PTO is engaged.
To start the PTO, press the PTO switch.The
touch panel will display the HOPPER MODE
screen and the light above the switch will come
on. The PTO will start and the idle speech will
increase
HOPPER UP
OPERATION
HOPPER DUMP
FAST IDLE
When the PTO or sweep switch is pressed while
the transmission is in neutral and the service
brake is depressed, the engine RPM will raise to
the fast idle setting of 1100 RPM.
The fast idle setting is useful for lifting the hopper
or starting the sweeping operations. The fast idle
is cancelled by pressing the service brake.
NOTE: The OVERSPEED, ENGINE ALARM will
sound and appear if the engine speed becomes
greater than 2200 RPM while the PTO is
engaged.
NOTE: The PTO shafts will automatically engage
when the sweep switch or the hopper up switch is
pressed.
The PTO will automatically shut off about two
minutes after the sweep switch is shut off.
To stop the PTO, check that the sweep switch is
off, and press the PTO switch again. The light
above the PTO switch will turn off.
HOPPER DOWN
F SHAKER
HOPPER HOME
MORE
NOTE: The ERROR--BROOMS DOWN ALARM
will sound and appear if you try to turn off the
PTO with the sweep switch on.
Centurion 331020 (7-- 04)
27
OPERATION
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SWEEP SWITCH
The sweep switch starts and stops the sweeping
functions of the machine. These functions include
the vacuum fan, the main broom, the conveyor
and the gutter broom(s).
NOTE: The HOPPER UP ERROR ALARM will
sound and appear if the sweep switch or the
conveyor is activated with the hopper still in the
raised position. The sweep switch can NOT be
activated if any of the hopper control switches are
lit. The hopper must be closed and fully lowered
before sweeping.
To start the sweeping functions, press the sweep
switch. The touch panel will display a SWEEPER
TURNING ON message for a few seconds, and
then display the SWEEP MODE screen. The PTO
will automatically start and the engine idle will
increase.
The conveyor will lower and move in to the
sweeping position and the vacuum fan will turn
on. The lights next to these switches will come on.
The gutter broom(s), vacuum fan and water pump
will also automatically turn on with the sweepswitch IF they were in the on position when the
sweep switch was last turned off.
Sweep Mode
ECONOMY/LIGHT
SUPER SWEEP
WATER Main Broom
MEDIUM 100%
TANK = FULL
F SHAKER
VAC F AN
MORE
NOTE: The REDUCE ENGINE RPM ALARM will
sound and appear if the engine speed is greater
than 950 RPM when the PTO is engaged.
When the PTO or sweep switch is pressed while
the transmission is in neutral and the service
brake is not on, the engine RPM will raise to the
fast idle setting of 1100 RPM.
To stop and raise the sweeping functions, press
the sweep switch again. The lights next to these
sweeping function switches will turn off. The touch
panel will display a SWEEPER TURNING OFF
message for a few seconds, and then display the
SWEEP MODE screen.
NOTE: The sweep mode, water flow rate, gutter
broom(s), and vacuum fan will default to the last
setting used when the sweeping operations are
started again.
NOTE: For best slow speed sweeping results,
drive the machine in D1 (first gear) with the rear
axle in low range.
NOTE: The HOPPER FIRE ALARM will sound
and appear and the sweep functions will
automatically turn off when the Thermo Sentry
t
senses a possible fire in the hopper.
28
Centurion 331020 (7-- 04)
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