Tennant S20 Gas User manual

*9007261*
www.tennantco.com
9007261
Rev. 01 (08-2011)
Sweeper
English EN
Operator Manual
S20
(Gas/LPG)

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.
PROTECT THE ENVIRONMENT
Please dispose of packaging materials,
old machine components such as
batteries, hazardous fluids including
antifreeze and oil, in an environmentally
safe way according to local waste
disposal regulations.
Always remember to recycle.
MACHINE DATA
Please fill out at time of installation for future reference.
Model No. --
Serial No. --
Machine Options --
Sales Rep. --
Sales Rep. phone no. --
Customer Number --
Installation Date --
Tennant N.V.
Industrielaan 6 5405 AB
P.O. Box 6 5400 AA Uden--The Netherlands
[e-mail]
www.tennantco.com
Specifications and parts are subject to change without notice.
Original instructions, copyright E2010, 2011 TENNANT Company, Printed in The Netherlands. All rights reserved
DECLARATION OF CONFORMITY FOR MACHINERY
(according to Annex II A of the Machinery Directive)
TENNANT N.V.
Industrielaan 6 5405 AB
P.O. Box 6 5400 AA
Uden -- The Netherlands
Uden, 21--05--2010
EN
Herewith declares, on our own responsibility, that the machinery
S20
-- is in conformity with the provisions of the Machinery Directive (2006/42/EC), as amended and with national
implementing legislation
-- is in conformity with the provisions of the Electro Magnetic Compatibility Directive 2004/108/EC
-- is in conformity with the provisions concerning noise emission for outdoor use (Directive 2000/14/CE) and
with national implementing legislation
and that
-- the following harmonized standards or parts of these standards have been applied: EN ISO 14121--1, EN
1037, EN 60335--1, EN 60204--1, EN ISO 13849--1, EN ISO 13849--2, EN 60529, EN ISO 4413, EN 349, EN
55012, EN 61000--6--2, EN ISO 11201, EN ISO 4871, EN ISO 3744*, EN ISO 13059*, EN ISO 3450, EN
60335--2--72.
-- the following national standards or parts of these standards have been used:

CONTENTS
1
S20 Gas / LP 9007261 (1--10)
CONTENTS
Page
Safety Precautions 2.......................
Operation 6...............................
Machine Components 6..................
Controls And Instruments 7...............
Symbol Definitions 8.....................
Operation Of Controls 10..................
Directional Pedal 10...................
Brake Pedal 10.......................
Parking Brake Pedal 10................
Parking Brake Light 10.................
Main Cover Lever 11...................
Steering Wheel Tilt Handle 11...........
Main Brush Adjustment Knob 11.........
Side Brush Adjustment Knob 11.........
Charging System Light 12..............
Engine Water Temperature Light 12......
Clogged Dust Filter Light 12............
Hopper Temperature Light --
Thermo--Sentry 12..................
LPG Fuel Level Low Light 13............
Engine Oil Pressure Light 13............
Hopper Door Closed Light 13...........
Clogged Hydraulic Filter Light 13........
Fuel Level Gauge 14...................
Hour Meter 14........................
Operating / Hazard Lights Switch 14.....
Deluxe Suspension Seat 15.............
Seat Belts 15.........................
Brush Information 16.....................
How The Machine Works 16...............
Pre--operation Checklist 16................
Changing The Lpg Tank 17................
Starting The Machine 18..................
Stop The Machine 20.....................
While Operating The Machine 21...........
Sweeping 22..........................
Stop Sweeping 23........................
Emptying The Hopper 24..................
Engaging Hopper Support Bar 26...........
Disengaging Hopper Support Bar 27........
Options 29..............................
Vacuum Wand 29.....................
Tower Bumpers 30....................
Machine Troubleshooting 31...............
Maintenance 32.............................
Maintenance Chart 32....................
Hydraulics 33..........................
Hydraulic Fluid Reservoir 33............
Engine 34...............................
Cooling System 34....................
Air Filter Indicator 34...................
Engine Oil 34.........................
Fuses 35................................
Hopper Dust Filter 36.....................
Replacing The Hopper Dust Filter 36.....
Cleaning The Hopper Dust Filter 37......
Cleaning The Cyclone Assembly 37........
Page
Main Brush 38..........................
Replacing Or Rotating The
Main Brush 38.....................
Adjusting The Main Brush Width 39......
Side Brush(es) 39........................
Replacing The Side Brush 39...........
Adjusting The Side Brush Pattern 40.....
Skirts 41...............................
Pushing, Towing, And Transporting
The Machine 42.......................
Pushing Or Towing The Machine 42......
Transporting The Machine 42...........
Machine Jacking 43......................
Storage Information 43....................
Specifications 44..........................
General Machine Dimensions/Capacities 44.
General Machine Performance 44..........
Machine Dimensions 45...................

SAFETY PRECAUTIONS
S20 Gas / LP 9007261 (8--11)
2
SAFETY PRECAUTIONS
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.
CAUTION: To warn of unsafe practices
that could result in minor or moderate
personal injury.
FOR SAFETY: To identify actions that must be
followed for safe operation of equipment.
Do not use the machine other than described in
this Operator Manual. The machine is not
designed for use on public roads.
The following information signals potentially
dangerous conditions to the operator or
equipment:
WARNING: Moving belt and fan. Keep
away.
WARNING: Machine 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).
FOR SAFETY:
1. Do not operate machine:
-- Unless trained and authorized.
-- Unless operator manual is read and
understood.
-- Unless mentally and physically
capable of following machine
instructions.
-- If it is not in proper operating
condition.
-- In flammable or explosive areas.
-- In areas with possible falling objects
unless equipped with overhead guard.
2. Before starting machine:
-- Check for fuel, oil, and liquid 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 so
equipped).
3. When starting machine:
-- Keep foot on brake and directional
pedal in neutral.
4. When using machine:
-- Do not pick up burning or smoking
debris, such as cigarettes, matches or
hot ashes
-- Use brakes to stop machine.
-- Go slow on inclines and slippery
surfaces.
-- 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.
-- Do not carry passengers on machine.
-- Always follow safety and traffic rules.
-- Report machine damage or faulty
operation immediately.
5. Before leaving or servicing machine:
-- Stop on level surface.
-- Set parking brake.
-- Turn off machine and remove key.

SAFETY PRECAUTIONS
3
S20 Gas / LP 9007261 (1--10)
6. When servicing machine:
-- Avoid moving parts. Do not wear loose
clothing or jewelry.
-- 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.
-- Wear eye and ear protection when
using pressurized air or water.
-- 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.
-- Use Tennant supplied or approved
replacement parts.
7. 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.

SAFETY PRECAUTIONS
S20 Gas / LP 9007261 (1--10)
4
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.
EMISSIONS LABEL -- Located on the
side of the operator compartment.
HOPPER LIFT ARMS LABEL --
Located on both hopper lift
arms.
FAN AND BELT LABEL --
Located on engine belt
guard.
354902
HEARING PROTECTION LABEL --
Located only on machines with
cab option.

SAFETY PRECAUTIONS
5
S20 Gas / LP 9007261 (1--10)
HOT SURFACE LABEL --
Located on the exhaust
shield.
RAISED HOPPER LABEL -- Located
on the hopper lift arm.
FOR SAFETY LABEL --
Located on the side of the
operator compartment.
RAISED HOPPER LABEL -- Located
on the hopper support bar.
VACUUM WAND LABEL -- Located
on the optional vacuum wand.
354902

OPERATION
6S20 Gas / LP 9007261 (1--10)
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
7
S20 Gas / LP 9007261 (1--10)
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
8S20 Gas / LP 9007261 (1--10)
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
9
S20 Gas / LP 9007261 (1--10)
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
10 S20 Gas / LP 9007261 (1--10)
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
11
S20 Gas / LP 9007261 (1--10)
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
12 S20 Gas / LP 9007261 (1--10)
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
13
S20 Gas / LP 9007261 (1--10)
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
14 S20 Gas / LP 9007261 (1--10)
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
15
S20 Gas / LP 9007261 (1--10)
DELUXE SUSPENSION SEAT
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
FOR SAFETY: Before starting machine, adjust
seat and fasten seat belt (if equipped).

OPERATION
16 S20 Gas / LP 9007261 (1--10)
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.
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.
PRE--OPERATION CHECKLIST
-Check the main sweep brush for damage and
wear . Remove string, banding, plastic wrap,
or other debris wrapped around the brush.
-Check the main brush compartment right skirt
for damage and wear.
-Check the side brush(es) for damage and
wear . Remove string, banding, plastic wrap,
or other debris wrapped around the brush.
-Check the main brush compartment left skirt
for damage and wear.
-Check the air filter indicator.
-Check the engine oil level.
-Check the engine coolant level.
-Check the radiator fins and cooling fan screen
for debris.
-Check the hydraulic fluid level.
-Check for rubbing hoses or wires and leaks or
obstructions.
-Check all lights for proper operation.
-Check all controls for proper operation.
-Check hopper skirt and brush compartment
skirts for damage and wear.
-Check the service records to determine
maintenance requirements.

OPERATION
17
S20 Gas / LP 9007261 (1--10)
CHANGING THE LPG TANK
1. Park the machine in a designated safe area.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, set parking
brake, and turn off machine.
2. Close the tank service valve on the LPG tank
located under the operator seat.
350412
3. Operate the engine until it stops from lack of
fuel.
WARNING: Machine emits toxic gases.
Severe respiratory damage or
asphyxiation can result. Provide
adequate ventilation. Consult with your
regulatory authorities for exposure
limits. Keep engine properly tuned.
FOR SAFETY: When servicing machine, keep
flames and sparks away from fuel system
service area. Keep area well ventilated.
4. Put on gloves and remove the quick
disconnect tank coupling.
350412
5. Unlatch and remove the empty LPG fuel tank
from the machine.
6. Carefully put the filled LPG tank in the
machine so that the tank centering pin enters
the aligning hole in the tank collar.
350412
7. Fasten the tank hold-down clamp to lock the
tank in position.
8. Connect the LPG fuel line to the tank service
coupling. Make sure the service coupling is
clean and free of damage. Also make sure it
matches the machine service coupling.
350412
9. Open the tank service valve slowly and check
for leaks. Close the service valve immediately
if an LPG leak is found, and tell the
appropriate personnel.
350412

OPERATION
18 S20 Gas / LP 9007261 (1--10)
STARTING THE MACHINE
1. LPG powered machines: Open the liquid
service valve slowly.
NOTE: Opening the service valve too quickly may
cause the service check valve to stop the flow of
LPG fuel. If the check valve stops the fuel flow,
close the service valve, wait a few seconds and
open the valve slowly again.
350412
2. Sit in the operator’s seat and engage the
brakes with the directional pedal in neutral.
FOR SAFETY: When starting machine, keep
foot on brake and directional pedal in neutral.
3. Move the throttle lever back into the Idle
engine speed position.
4. On gasoline powered machines, pull out the
choke knob when the engine is cold. Push in
the choke knob after the engine is running
smoothly.
5. Turn the ignition switch key clockwise until the
engine starts.
NOTE: Do not operate the starter motor for more
than 10 seconds at a time or after the engine has
started. Allow the starter to cool between starting
attempts or damage to the starter motor may
occur.