Tennant GL20 User manual

Tennant S20 Sweeper LPG
OPERATOR MANUAL
Clemas & Co. Unit 5 Ashchurch Business Centre, Alexandra Way, Tewkesbury,
Gloucestershire, GL20 8NB.
Tel: [phone] Fax: [phone]
Email: [e-mail] Web: www.clemas.co.uk

INTRODUCTION
This manual is furnished with each new model. It provides necessary operation and 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:
SThe machine is operated with reasonable care.
SThe machine is maintained regularly - per the machine maintenance instructions provided.
SThe machine is maintained with manufacturer supplied or equivalent parts.
Model No. −
Serial No. −
Installation Date −
Please fill out at time of installation
for future reference.
MACHINE DATA
PROTECT THE ENVIRONMENT
Please dispose of packaging
materials, used components
such as batteries and fluids in
an environmentally safe way ac-
cording to local waste disposal
regulations.
Always remember to recycle.
INTENDED USE
The S20 is an industrial rider machine designed to sweep hard surfaces (concrete, asphalt, stone, synthetic, etc).
Typical applications include industrial warehouses, manufacturing facilities, distribution facilities, stadiums, arenas,
convention centers, parking facilities, transportation terminals, and construction sites. Do not use this machine on soil,
grass, artificial turf, or carpeted surfaces. This machine can be used both indoors and outdoors, but ensure there is
adequate ventilation if used indoors. This machine is not intended for use on public roadways. Do not use this
machine other than described in this Operator Manual.
Tennant Company
PO Box 1452
Minneapolis, MN 55440
Phone: (800) 553−8033 or (763) 513−2850
www.tennantco.com
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−Sentry, Perma−Filter, InstantAccess, Lower total Cost of Ownership, and Duramer are trademarks of Tennant Company.
Specifications and parts are subject to change without notice.
Original Instructions, Copyright E2009 −2012, 2014, 2015 TENNANT Company, Printed in U.S.A.

CONTENTS
1
S20 Gas/LPG 9006719 (4−2014)
CONTENTS
Page
Important Safety Instructions −
Save These Instructions 4..................
Operation 8...............................
Machine Components 8..................
Controls And Instruments 9...............
Symbol Definitions 10.....................
Operation Of Controls 12..................
Directional Pedal 12...................
Brake Pedal 12.......................
Parking Brake Pedal 12................
Parking Brake Light 12.................
Main Cover Lever 13...................
Steering Wheel Tilt Handle 13...........
Main Brush Adjustment Knob 13.........
Side Brush Adjustment Knob 13.........
Charging System Light 14..............
Engine Water Temperature Light 14......
Clogged Dust Filter Light 14............
Hopper Temperature Light −
Thermo−Sentry 14..................
Lpg Fuel Level Low Light 15............
Engine Oil Pressure Light 15............
Hopper Door Closed Light 15...........
Clogged Hydraulic Filter Light 15........
Fuel Level Gauge 16...................
Hour Meter 16........................
Operating / Hazard Lights Switch 16.....
Operator Seat 17......................
Deluxe Suspension Seat (Option) 17.....
Seat Belts (Option) 17.................
How The Machine Works 18...............
Brush Information 18.....................
While Operating The Machine 19...........
Pre−Operation Checklist 20................
Changing The Lpg Tank 21................
Starting The Machine 22..................
Turning Off The Machine 24...............
Sweeping 25............................
Stop Sweeping 26........................
Emptying The Hopper 27..................
Engaging Hopper Support Bar 29...........
Disengaging Hopper Support Bar 30........
Options 32..............................
Vacuum Wand 32.....................
Tower Bumpers (Option) 33.............
Machine Troubleshooting 34...............
Maintenance 35.............................
Maintenance Chart 35....................
Lubrication 37...........................
Engine Oil 37.........................
Rear Wheel Support 37
................
Front Wheel Bearings 37...............
Hopper Lift Arm Pivots 37..............
Page
Hydraulics 38............................
Hydraulic Fluid Reservoir 38............
Hydraulic Fluid 39.....................
Hydraulic Hoses 39....................
Engine 40...............................
Cooling System 40....................
Air Filter Indicator 41...................
Air Filter 41...........................
Engine Belt 42........................
Fuel Filter (Gasoline) 42................
Fuel Filter (Lpg) 42....................
Carburetor 43.........................
Spark Plugs 43........................
Valve Clearance 43....................
Vacuum Fan Belt 43......................
Battery 43...............................
Fuses And Relays 44.....................
Relay Panel Fuses And Relays 44.......
Hopper Dust Filter 45.....................
Replacing The Hopper Dust Filter 45.....
Cleaning The Hopper Dust Filter 46......
Cleaning The Cyclone Assembly 46......
Cyclone Dust Tray Seals 46............
Cyclone Perma−Filter 47...............
Cyclone Cover Seals 47................
Hopper Dust Filter Cover Seal 47........
Main Brush 48...........................
Replacing Or Rotating The Main Brush 48
Checking The Main Brush Pattern 49....
Adjusting The Main Brush Taper 49......
Adjusting The Main Brush Width 50......
Side Brush(Es) 50........................
Replacing The Side Brush 50...........
Adjusting The Side Brush Pattern 51.....
Side Brush Guard 51..................
Side Brush Pivot 51....................
Skirts, Flaps, And Seals 52................
Hopper Lip Skirt 52....................
Hopper Side Skirt 52...................
Brush Door Skirts 52...................
Rear Skirts 52........................
Side Brush Dust Control Skirts (Option) 53
Brush Door Seals 53...................
Hopper Seals 53......................
Hopper Access Door Seal 53...........
Inner Hopper Access Door Seal
(Option −Vacuum Wand Only) 54.....
Hopper Door Seals 54.................
Filter Chamber Inlet Seal 54............
Brakes And Tires 55......................
Brakes 55............................
Tires 55..............................
Rear Wheel 55........................

CONTENTS
S20 Gas/LPG 9006719 (1−2015)
2
Page
Propelling Motor 55.......................
Pushing, Towing, And Transporting
The Machine 56.......................
Pushing Or Towing The Machine 56......
Transporting The Machine 56...........
Machine Jacking 58......................
Storage Information 58....................
Specifications 59............................
General Machine Dimensions/Capacities 59.
General Machine Performance 60..........
Power Type 60...........................
Steering 60..............................
Hydraulic System 60......................
Braking System 61.......................
Tires 61.................................
Machine Dimensions 61...................
Index 62...................................

SAFETY PRECAUTIONS
3
S20 Gas/LP 9006719 (8−2009)

SAFETY PRECAUTIONS
S20 Gas/LP 9006719 (7−2015)
4
IMPORTANT SAFETY INSTRUCTIONS −SAVE THESE INSTRUCTIONS
The following precautions are used throughout
this manual as indicated in their description:
WARNING: To warn of hazards or
unsafe practices that could result in
severe personal injury or death.
FOR SAFETY: To identify actions that must be
followed for safe operation of equipment.
The following information signals potentially
dangerous conditions to the operator. Know when
these conditions can exist. Locate all safety
devices on the machine. Report machine
damage or faulty operation immediately.
WARNING: Moving belt and fan. Keep
away.
WARNING: Engine emits toxic gases.
Serious injury or death can result.
Provide adequate ventilation.
WARNING: Raised hopper may fall.
Engage hopper support bar.
WARNING: Lift arm pinch point. Stay
clear of hopper lift arms.
WARNING: Burn hazard. Hot surface. Do
NOT touch.
WARNING: Machine can emit excessive
noise. Hearing loss can result. Wear
hearing protection. (Cab option only).
WARNING: Accident may occur. Do not
operate vacuum wand while driving.
(Vacuum wand option only).
WARNING: This product contains chemicals
known to the state of California to cause
cancer, birth defects, or other reproductive
harm.
This machine may be equipped with
technology that automatically communicates
over the cellular network. If this machine will
be operated where cell phone use is restricted
because of concerns related to equipment
interference, please contact a Tennant
representative for information on how to
disable the cellular communication
functionality.
FOR SAFETY:
1. Do not operate machine:
−Unless trained and authorized.
−Unless operator manual is read and
understood.
−Under the influence of alcohol or
drugs.
−While using a cell phone or other
types of electronic devices.
−Unless mentally and physically
capable of following machine
instructions.
−If it is not in proper operating
condition.
−Without filters in place.
−In areas where flammable
vapors/liquids or combustible dusts
are present.
−In areas that are too dark to safely see
the controls or operate the machine
unless operating / headlights are
turned on.
−In areas with possible falling objects
unless equipped with overhead guard.
2. Before starting machine:
−Check machine for fluid 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.
−Adjust seat and fasten seat belt. (if
equipped).
3. When starting machine:
−Keep foot on brake and directional
pedal in neutral.
4. When using machine:
−Use only as described in this manual.
−Do not pick up burning or smoking
debris, such as cigarettes, matches or
hot ashes.
−Use brakes to stop machine.
−Go slowly on inclines and slippery
surfaces.
−Do not sweep on ramp inclines that
exceed 14% grade or transport
(GVWR) on ramp inclines that exceed
17.6% grade.
−Reduce speed when turning.
−Keep all parts of body inside operator
station while machine is moving.

SAFETY PRECAUTIONS
5
S20 Gas/LP 9006719 (4−2014)
−Use care when reversing machine.
−Move machine with care when hopper
is raised.
−Make sure adequate clearance is
available before raising hopper.
−Do not raise hopper when machine is
on an incline.
−Keep children and unauthorized
persons away from machine.
−Do not carry passengers on any part
of the machine.
−Always follow safety and traffic rules.
−Report machine damage or faulty
operation immediately.
5. Before leaving or servicing machine:
−Do not park near combustible
materials, dust, gases, or liquids.
−Stop on level surface.
−Set parking brake.
−Turn off machine and remove key.
6. When servicing machine:
−All work must be done with sufficient
lighting and visibility.
−Keep work area well ventilated.
−Avoid moving parts. Do not wear loose
clothing, jewelry and secure long hair.
−Block machine tires before jacking
machine up.
−Jack machine up at designated
locations only. Support machine with
jack stands.
−Use hoist or jack that will support the
weight of the machine.
−Do not power spray or hose off
machine near electrical components.
−Disconnect battery connections before
working on machine.
−Avoid contact with battery acid.
−Avoid contact with hot engine coolant.
−Do not remove cap from radiator when
engine is hot.
−Allow engine to cool.
−Keep flames and sparks away from
fuel system service area. Keep area
well ventilated.
−Use cardboard to locate leaking
hydraulic fluid under pressure.
−All repairs must be performed by
trained personnel.
−Do not modify the machine from its
original design.
−Use Tennant supplied or approved
replacement parts.
−Wear personal protective equipment
as needed and where recommended in
this manual.
For Safety: wear hearing protection.
For Safety: wear protective gloves.
For Safety: wear eye protection.
For Safety: wear protective dust mask.
7. When loading/unloading machine
onto/off truck or trailer:
−Empty debris hopper before loading
machine.
−Turn off machine and remove key.
−Use ramp, truck or trailer that will
support the weight of the machine and
operator.
−Do not load/unload on ramp inclines
that exceed 17.6% grade.
−Use winch. Do not drive the machine
onto/off the truck or trailer unless the
load height is 380 mm (15 in) or less
from the ground.
−Set parking brake after machine is
loaded.
−Block machine tires.
−Tie machine down to truck or trailer.

SAFETY PRECAUTIONS
S20 Gas/LP 9006719 (4−2014)
6
The following safety labels are mounted on the
machine in the locations indicated. If any label
becomes damaged or illegible, install a new label
in its place.
Located on the side of the operator
compartment.
Located on both hopper lift arms.
Located on engine belt
guard.
354902
Located only on machines with cab option.
WARNING LABEL −Machine emits toxic gases.
Serious injury or death can result. Provide
adequate ventilation.
WARNING LABEL −Machine can emit
excessive noise. Hearing loss can result. Wear
hearing protection.
WARNING LABEL −Lift arm pinch
point. Stay clear of hopper lift arms.
WARNING LABEL −
Moving belt and fan.
Stay away.

SAFETY PRECAUTIONS
7
S20 Gas/LP 9006719 (4−2014)
Located on the exhaust shield.
Located on the hopper lift arm.
Located on the side of the
operator compartment.
Located on the hopper support bar.
Located on the optional vacuum wand.
354902
WARNING LABEL −Burn hazard.
Hot surface. Do not touch.
WARNING LABEL −Raised hopper may
fall. Engage hopper support pin.
FOR SAFETY LABEL −
Read manual before
operating machine.
WARNING LABEL −Raised hopper may
fall. Engage hopper support pin.
WARNING LABEL −Accident may occur.
Do not operate vacuum wand while driving.

OPERATION
8S20 Gas/LP 9006719 (8−2009)
OPERATION
MACHINE COMPONENTS
1
23
4
6
7
5
8
9
1. Operator seat
2. Steering wheel
3. Instrument panel
4. Hopper cover
5. Side brush
6. Brush door
7. Fuel tank
8. Hopper access door
9. Main cover

OPERATION
9
S20 Gas/LP 9006719 (8−2009)
CONTROLS AND INSTRUMENTS
3
1
4
5
2
6
7
8
9
10 19
20
11
12
13
14 15
18
17
16 21
25
23
22
24
26
27
28
29
30
1. Directional pedal
2. Parking brake pedal
3. Brake pedal
4. Seat adjustment lever
5. Throttle lever
6. Hopper raise / lower lever
7. Hopper door lever
8. Vacuum and filter shaker lever
9. Main brush lever
10. Main brush adjustment knob
11. Hopper temperature light −
Thermo−Sentry
12. Clogged dust filter light
13. Engine water temperature light
14. Charging system light
15. LPG fuel level low light
16. Engine oil pressure light
17. Hopper door closed light
18. Clogged hydraulic filter light
19. Fuel level gauge
20. Hour meter
21. Steering wheel
22. Horn button
23. Steering wheel tilt handle
24. Ignition switch
25. Engine choke knob (gasoline only)
26. Side brush lever
27. Operating / hazard lights switch
28. Right side brush adjustment knob
29. Left side brush adjustment knob
(Dual side brush option only)
30. Main cover lever

OPERATION
10 S20 Gas/LP 9006719 (8−2009)
SYMBOL DEFINITIONS
These symbols identify controls, displays, and
features on the machine.
Filter shaker Thermo−Sentry
Vacuum fan on Clogged dust filter
Vacuum fan off Hopper door closed (light)
Fast engine speed Clogged hydraulic filter
Idle engine speed LPG fuel level low
Hopper down Hourmeter
Hopper up Steering wheel tilt
Hopper door open Off
Hopper door close (lever) On
Main brush down and on Start
Main brush up and off Horn
Battery charging system Operating lights
Engine oil pressure Hazard light

OPERATION
11
S20 Gas/LP 9006719 (8−2009)
Engine water temperature Side brush down and on
Side brush up and off Side brush pressure
Engine choke (Gasoline Only) Unleaded fuel only
Parking brake Brush pressure (Increase)
Brush pressure (Decrease) Turn counterclockwise
Turn clockwise

OPERATION
12 S20 Gas/LP 9006719 (8−2009)
OPERATION OF CONTROLS
DIRECTIONAL PEDAL
Press the top of the Directional pedal to move
forward and the bottom of the pedal to move
backward. The pedal returns to the neutral
position when it is released.
BRAKE PEDAL
Press the Brake pedal to stop the machine.
PARKING BRAKE PEDAL
Press the Brake pedal down as far as possible
and use toe to lock the Parking brake pedal into
place. Press the Brake pedal to release the
parking brake. The Parking brake pedal will return
to the unlocked position.
NOTE: If the operator is not in the seat, the
parking brake must be engaged or the machine
will automatically shut off after 2 seconds.
PARKING BRAKE LIGHT
The parking brake light comes on when the
parking brake is engaged. Release the parking
brake before operating the machine.

OPERATION
13
S20 Gas/LP 9006719 (8−2009)
MAIN COVER LEVER
The main cover lever releases and locks the seat
support.
Release: Pull the lever back and lift the main
cover.
Lock: Close the main cover and release the lever
to lock the cover in place.
STEERING WHEEL TILT HANDLE
The steering wheel tilt handle controls the angle
of the steering wheel.
Adjust: Pull out the tilt handle, move the steering
wheel up or down, and release the tilt handle.
MAIN BRUSH ADJUSTMENT KNOB
The main brush adjustment knob changes the
amount of contact the main brush has with the
surface being swept. Refer to ADJUSTING THE
MAIN BRUSH WIDTH section of this manual.
NOTE: The main brush adjustment knob can be
repositioned if it interferes with any of the
controls. Lift the knob, turn it to the desired
position, and release it.
SIDE BRUSH ADJUSTMENT KNOB
The side brush adjustment knob changes the
amount of contact the side brush has with the
surface being swept. Refer to ADJUSTING THE
SIDE BRUSH PATTERN section of this manual.
NOTE: The side brush adjustment knob can be
repositioned. Lift the knob, turn it to the desired
position, and release it.

OPERATION
14 S20 Gas/LP 9006719 (8−2009)
CHARGING SYSTEM LIGHT
The charging system light comes on when the
alternator is not operating within normal range;
13.5 to 14.5 V. If the light comes on, stop
operating the machine. Contact a TENNANT
service representative.
ENGINE WATER TEMPERATURE LIGHT
The engine water temperature light comes on
when the temperature of the engine coolant is
more than 113_C (235_F). If the light comes on,
stop operating the machine. Contact a TENNANT
service representative.
CLOGGED DUST FILTER LIGHT
The clogged dust filter light comes on when the
hopper dust filter is clogged.
To clean the filter, hold the vacuum and filter
shaker lever in the Filter shaker position. If the
clogged dust filter light remains lit, manually clean
the hopper dust filter. See HOPPER DUST
FILTER in the MAINTENANCE section of this
manual.
NOTE: The clogged dust filter light also comes
on when the hopper door is closed and the
vacuum fan is on.
HOPPER TEMPERATURE LIGHT −
THERMO−SENTRY
The hopper temperature light comes on when the
Thermo−Sentry senses that there is excessive
heat in the hopper, possibly from a fire. The
Thermo−Sentry will also move the vacuum and
filter shaker lever to the Vacuum fan off position.
If this happens, stop the machine, eliminate the
source of the heat, and return the lever to the
Vacuum fan on position.

OPERATION
15
S20 Gas/LP 9006719 (8−2009)
LPG FUEL LEVEL LOW LIGHT
The LPG fuel level low light comes on when the
LPG fuel tank is almost empty. Replace the fuel
tank. Refer to CHANGING THE LPG TANK.
ENGINE OIL PRESSURE LIGHT
The engine oil pressure light comes on when the
engine oil pressure falls below 40 kPa (5 psi). If
the light comes on, stop operating the machine.
Contact a TENNANT service representative.
HOPPER DOOR CLOSED LIGHT
The hopper door closed light comes on when the
hopper door is closed.
Make sure the hopper door is open all the way
and the hopper door closed light is off, before
sweeping.
CLOGGED HYDRAULIC FILTER LIGHT
The clogged hydraulic filter light comes on when
the hydraulic filter is clogged. If this light remains
on, have the hydraulic filter changed as soon as
possible.

OPERATION
16 S20 Gas/LP 9006719 (8−2009)
FUEL LEVEL GAUGE
The fuel level gauge indicates how much fuel is in
the fuel tank.
NOTE: Do not use leaded fuels. The use of
leaded fuels will cause permanent damage to the
system’s oxygen sensor and the catalytic
converter.
Gasoline fuel level gauge.
LP tank level gauge.
HOUR METER
The Hour meter records the hours the machine
was operated. Use this information to determine
machine service intervals.
OPERATING / HAZARD LIGHTS SWITCH
The operating / hazard lights switch powers on
and off the headlights and taillights and the
optional hazard light.
Operating lights on: Press the top part of the
switch.
Operating / Hazard lights on (Optional): Press the
bottom part of the switch.
Off: Place the switch in the middle position.

OPERATION
17
S20 Gas/LP 9006719 (8−2009)
OPERATOR SEAT
The front−to−back adjustment lever adjusts the
seat position.
DELUXE SUSPENSION SEAT (OPTION)
The operator seat has three adjustments:
backrest angle, operator weight, and front to
back.
The operator’s weight adjustment lever controls
the seat weight adjustment. The lever has three
positions: lightweight, middleweight, and
heavyweight.
The backrest adjustment knob adjusts the angle
of the backrest.
The front−to−back adjustment lever adjusts the
seat position.
SEAT BELTS (OPTION)
FOR SAFETY: Before starting machine, adjust
seat and fasten seat belt (if equipped).

OPERATION
18 S20 Gas/LP 9006719 (4−2014)
HOW THE MACHINE WORKS
The steering wheel controls the direction of
machine travel. The directional pedal controls the
speed and forward/reverse direction. The brake
pedal slows and stops the machine.
The side brush sweeps debris into the path of the
main brush. The main brush sweeps debris from
the floor into the hopper. The vacuum system
pulls dust and air through the hopper and the dust
control system.
When sweeping is finished, shake the dust filter
and empty the hopper.
BRUSH INFORMATION
For best results, use the correct brush type for the
cleaning application.
NOTE:The amount and type of soilage play an
important role in determining the type of brushes
to use. Contact a Tennant representative for
specific recommendations.
Polypropylene Sand Wedge Main Brush −
Recommended for heavy accumulation of sand
and other fine particles.
Polypropylene Window Main Brush −
Recommended for light litter, especially on
smooth floors.
Polypropylene 8-double row Main Brush −
Recommended for general sweeping applications.
Polypropylene and Wire 8-double row Main
Brush −Recommended for general sweeping and
slightly impacted debris.
Polyester 8-double row Main Brush −
Recommended for general sweeping, especially
on rough or irregular surfaces. Nylon has a long
wear life.
Polyester Full Fill Main Brush −Recommended
for accumulation of sand and other fine particles.
Nylon has a long wear life.
Natural Fiber 8-double row Main Brush −
Recommended for accumulation of sand and
other very fine particles.
Polypropylene Side Brush −Recommended for
general sweeping of light to medium debris.
Nylon Side Brush −Recommended for general
sweeping of rough or irregular surfaces. Nylon
has a long wear life.
Flat Wire Side Brush −Recommended for
outdoor curb-side sweeping where dirt is heavy or
compacted.