Tennant M20 Diesel Scrubber Sweeper Instruction Manual

M20 Diesel Scrubber Sweeper

The Safe Scrubbing Alternative ES Extended Scrub System Tennant True Parts
Hygenic Fully Cleanable Tanks
FloorSmart Integrated Cleaning System IRIS a Tennant Technology
Pro−Panel Controls
Insta−Fit Adapter
Europe

M20
(Diesel)

(S/N 1000− ) Scrubber−Sweeper English

Operator Manual

For the latest Parts manuals and other
language Operator manuals, visit: www.tennantco.com/manuals
9016060
Rev. 04 (11-2023)
9016060

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:

• The machine is operated with reasonable care.
• The machine is maintained regularly – per the machine maintenance instructions provided.
• The machine is maintained with manufacturer supplied or equivalent parts.

PROTECT THE ENVIRONMENT MACHINE DATA

Please dispose of packaging materials, used components
such as batteries and fluids 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.

INTENDED USE

The M20 is an industrial rider machine designed to sweep/scrub 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 N.V.
Industrielaan 6 5405 AB
P.O. Box 6 5400 AA Uden−The Netherlands
[email protected]
www.tennantco.com

Specifications and parts are subject to change without notice.
Original Instructions, copyright  2016, 2017, 2020, 2022, 2023 TENNANT Company, Printed in U.S.A.

SAFETY PRECAUTIONS

IMPORTANT SAFETY 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.

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.

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: Flammable materials can cause an explosion or fire. Do not use flammable materials in tank.

WARNING: Flammable materials or reactive metals can cause an explosion or fire. Do not pickup.

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 pin.

WARNING: Lift arm pinch point. Stay clear of hopper lift arms.

WARNING: Burn hazard. Hot surface. Do NOT touch.

WARNING: Do not spray people or animals. Severe personal injury can result.
Wear eye protection. Hold sprayer with two hands.

WARNING: Machine can emit excessive noise. Hearing loss can result. Wear hearing protection.

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.
− In dusty environments without the vacuum fan on.
− Without filters in place or with clogged filters.
− Unless mentally and physically capable of following machine instructions.
− If it is not in proper operating condition.
− With pads or accessories not supplied or approved by Tennant. The use of other pads may impair safety.
− 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.

4 M20 Diesel 9016060 (09−2016)

SAFETY PRECAUTIONS

3. When starting machine:

− Keep foot on brake and directional pedal in neutral.

4. When using machine:

− Use only as described in this manual.

− Use brakes to stop machine.

− Do not pick up burning or smoking debris, such as cigarettes, matches or hot ashes

− Go slowly on inclines and slippery surfaces.

− Do not scrub on ramp inclines that exceed 10% grade or transport (GVWR) on ramp inclines that exceed 14% grade.

− Reduce speed when turning.

− Keep all parts of body inside operator station while machine is moving.

− Always be aware of surroundings while operating machine.

− Do not access the video / help screens while the machine is moving. (Pro−Panel).

− 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.

− Follow mixing, handling and disposal instructions on chemical containers.

− Follow site safety guidelines concerning wet floors.

5. Before leaving or servicing machine:

− Do not park near combustible materials, dusts, 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 push or tow the machine without an operator in the seat controlling 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 a trained service mechanic.

− 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.

M20 Diesel 9016060 (09−2016) 5

SAFETY PRECAUTIONS

7. When loading/unloading machine onto/off truck or trailer:

− Use ramp, truck or trailer that will support the weight of the machine and operator.

− Drain tanks before loading machine.

− Empty debris hopper before loading machine.

− Lower scrub head and squeegee before tying down machine.

− Turn off machine and remove key.

− Do not load/unload on ramp inclines that exceed 10.0 deg/18% grade.

− Set parking brake after machine is loaded.

− Block machine tires.

− Tie machine down to truck or trailer.

6 M20 Diesel 9016060 (2−2020)

SAFETY PRECAUTIONS

The following safety labels are mounted on the machine in the locations indicated. If these or any labels become damaged or illegible, install a new label in its place.

SAFETY PRECAUTIONS

OPERATION  

OPERATION

MACHINE COMPONENTS

A. Overhead guard (option)

B. Instrument panel

C. Front shroud

D. Headlights

E. Side brush (option)

F. Side squeegee

G. Scrub head access door

H. Seat shroud

I. FaST carton, or ES detergent tank  compartment, Detergent metering tank, or ec−H2O System Module compartment (option)

J. Solution tank cover

K. Operator seat

L. Spray wand − nozzle behind seat (option)

M. Taillights

N. Audible backup alarm (option)

O. Recovery tank drain hose

P. Recovery tank cover

Q. Solution tank drain hose

R. Hopper

S. Rear squeegee

T. Squeegee protectors (option) U. Vacuum wand (option)

V. Hopper safety pin

W. Engine cover

X. Fuel tank

M20 Diesel 9016060 (9−2022) 9

OPERATION

CONTROLS AND INSTRUMENTS

A. Parking brake pedal

B. Brake pedal

C. Directional pedal

D. Spray nozzle switch /  High pressure washer switch (option)

E. Operating / Hazard lights switch

F. Detergent metering switch (option)

G. Steering column tilt knob

H. Filter shaker switch

I. Hopper door open / close switch

J. Hopper raise / lower switch

K. Glow plug light

L. Ignition switch

10 M20 Diesel 9016060 (9−2022)

OPERATION

STANDARD TOUCH PANEL

N. Scrubbing buttons (indicated in blue)

B. Fault / Alert indicator light C. Contrast control button D. Fuel level indicator

E. Hour meter

F. Solution tank indicator

G. Recovery tank full indicator H. Engine speed button

I. LCD display

J. Brush pressure button

K. Brush pressure indicator lights L. 1−STEP button

M. ec−H2O / ES (Extended Scrub /  FaST button (Option)

O. Scrubbing main brush button

P. Scrubbing vacuum fan / squeegee button

Q. Scrubbing side brush button (Option)

R. Sweeping buttons (Indicated in brown)

S. Sweeping main brush button

T. Sweeping vacuum button button

U. Sweeping side brush button

V. Solution on / off buttons

W. Solution flow decrease button (−)

X. Solution flow indicator lights

Y. Solution flow increase button (+)

Z. USB port (Service only)

M20 Diesel 9016060 (09−2016) 11

OPERATION

PRO−PANEL CONTROLS

A. Horn

B. Fault / Alert indicator light

C. ec−H2O / ES (Extended Scrub /  FaST button (Option)

D. Machine status button

E. Help button

F. Engine speed button

G. Main brush pressure access button

H. Sweeping buttons (Indicated in brown)

I. Sweeping main brush button

J. Sweeping vacuum fan button

K. Sweeping side brush button (Option)

L. Rearview camera button

M. Solution control access button

N. Scrubbing buttons (Indicated in blue)

O. Scrubbing main brush button

P. Scrubbing vacuum fan / squeegee button

Q. Scrubbing side brush (Option)

R. 1−STEP button

S. Video help

T. Zone control 1 button

U. Zone control 2 button

V. Zone control 3 button

W. Zone control 4 button

X. Solution on / off buttons

Y. USB ports (Service only)

12 M20 Diesel 9016060 (09−2016)

OPERATION

SYMBOL DEFINITIONS

These symbols are used on the machine to identify controls, displays, and features.

Horn Solution decrease (−) Fault / Alert indicator Solution increase (+) Recovery tank Solution flow Solution tank Solution On / Off Main brush pressure On

1−STEP Off

ES (Extended Scrub) (Option) ec−H2O (Option) FaST (Option) Jack point

Filter shaker Scrub mode Operating lights / Hazard light Sweeping side brush Headlights Sweeping vacuum fan Spray nozzle (Option) Sweeping main brush Scrubbing side brush Scrubbing vacuum fan / squeegee Scrubbing main brush

M20 Diesel 9016060 (09−2016) 13

OPERATION

Raise hopper Lower hopper

Hopper door open Hopper door close Detergent metering low rate Detergent metering high rate

Standard Panel Symbols

Contrast control Hour meter Engine speed control

Pro−Panel Symbols

Help Zone setting 1 Zone setting 2 Zone setting 3 Zone setting 4 Hour meter

Alert / Fault Checklist item unconfirmed Hour meter Checklist item confirmed Login Logout Select Supervisor settings Rotate machine view Supervisor menu Camera settings Start−up video Hopper fire

14 M20 Diesel 9016060 (9−2022)

OPERATION

Pro−Panel Symbols

Control help Video help About Video button Backspace Video list button

Rearview camera Home (main operating screen) Up arrow Down arrow Disable login Back arrow Add / Edit profiles Enable login Operator Calibrate touch Supervisor Checklist setup Edit profile Export all Add profile Export new Delete profile Export checklists Copy profile Enter

M20 Diesel 9016060 (09−2016) 15

OPERATION

OPERATION OF CONTROLS − STANDARD PANEL
FUEL INDICATOR

For gasoline machines, the Fuel indicator displays the amount of fuel left in the tank. The fault indicator will flash and a low fuel message will appear when the tank is near empty.

HOUR METER

The Hour meter records the hours the machine was operated. Use this information to determine machine service intervals.

RECOVERY TANK FULL INDICATOR

The recovery tank full indicator displays when the recovery tank is full. All scrubbing functions will stop when the recovery tank is full. Empty the recovery tank when the indicator box is filled.

SOLUTION TANK INDICATOR

The solution tank indicator displays the amount of liquid in the solution tank. Refill the solution tank when the indicator box is empty. The machine will stop scrubbing when the solution tank is empty.

CONTRAST CONTROL BUTTON

Use the contrast control button to darken / lighten the LCD display.

16 M20 Diesel 9016060 (09−2016)

ENGINE SPEED BUTTON

1−STEP BUTTON
OPERATION

The engine speed is controlled automatically when the 1−STEP button is pressed. When not sweeping or scrubbing, press the engine speed button to increase the engine RPM for increased travel speed. Press the engine speed button again to reduce the engine RPM.

The bars above and below the engine speed icon indicate engine speed setting. When two thinner bars appear above and below the icon and the icon appears as a line figure the engine is in the low setting.

When two thicker bars appear above and below the engine speed icon and the thinner bars and the icon is solid the engine is in the high setting.

Press the 1−STEP button to activate all selected sweeping and scrubbing functions. Prior to the 1−STEP button being pushed, the lights above all the selected sweeping / scrubbing functions will be on but the selected functions will be in the standby mode until the 1−STEP button is pressed. Press the 1−STEP button again when finished cleaning to stop all scrubbing or sweeping functions.

NOTE: The squeegee will remain down and the vacuum fan will remain on for a few seconds to pick up remaining water after the 1−STEP button is deactivated.

The indicator light above the button will illuminate when the 1−STEP button is activated.

M20 Diesel 9016060 (09−2016) 17

OPERATION

SWEEPING SIDE BRUSH BUTTON (OPTION)

Turn on the sweeping side brush: Press the sweeping side brush button. The indicator light will illuminate.

Turn off the sweeping side brush: Press the sweeping side brush button. The indicator light will turn off.

NOTE: The sweeping side brushes cannot operate independently from the main sweep brushes. The main sweep brushes also come on when the sweeping side brush button is pushed.

SWEEPING VACUUM FAN BUTTON

Turn on the sweeping vacuum fan: Press the sweeping vacuum fan button. The indicator light will illuminate.

Turn off the sweeping vacuum fan: Press the sweeping vacuum fan button. The indicator light will turn off.

SWEEPING MAIN BRUSH BUTTON

Turn on the sweeping main brush: Press the sweeping main brush button. The indicator light will illuminate.

Turn off the sweeping main brush: Press the sweeping main brush button. The indicator light will turn off.

** NOTE:** The sweeping mode and the scrubbing mode cannot both function at the same time. The sweeping mode will cease operating and the scrubbing mode will begin operating if any scrub button is pressed while the machine is in the sweeping mode.

SCRUBBING SIDE BRUSH BUTTON (OPTION)

Turn on the scrubbing side brush: Press the scrubbing side brush button. The indicator light will illuminate.

Turn off the scrubbing side brush: Press the scrubbing side brush button. The indicator light will turn off.

NOTE: The scrubbing side brush cannot operate independently from the main scrub brushes. The main scrub brushes also come on when the scrubbing side brush button is pushed.

18 M20 Diesel 9016060 (09−2016)

OPERATION

SCRUBBING VACUUM FAN / SQUEEGEE BUTTON

Lower squeegee and turn vacuum fan on: Press the scrubbing vacuum fan / squeegee button. The indicator light will illuminate.

Raise squeegee and turn vacuum fan off: Press the scrubbing vacuum fan / squeegee button. The indicator light will turn off.

SCRUBBING MAIN BRUSH BUTTON

Turn on the scrubbing main brush: Press the scrubbing main brush button. The indicator light will illuminate.

Turn off the scrubbing main brush: Press the scrubbing main brush button. The indicator light will turn off.

** NOTE: NOTE:** The scrubbing mode and the sweeping mode cannot both function at the same time. The scrubbing mode will cease operating and the sweeping mode will begin operating if any sweep button is pressed while the machine is in the scrubbing mode.

SOLUTION ON / OFF BUTTON

The solution flow is designed to stay on whenever the scrub brushes are on. It can be turned off for ten seconds with the solution on / off button to go around corners, etc. See also SETTING THE SOLUTION FLOW section.

Shut off the solution flow (for ten seconds) : Press the solution on / off button. All the solution flow indicators will turn off. (The solution flow will automatically restart at the end of the 10 second delay).

Turn on the solution flow: Press the solution on / off button. The solution indicators will turn back on and the solution flow will default to the last setting used.

M20 Diesel 9016060 (09−2016) 19

OPERATION

OPERATION OF CONTROLS − PRO−PANEL

PRO−ID LOGIN SCREEN

NOTE: The Pro−ID login screen only applies if the machine was set up with it. Predefined user accounts must be created within the Supervisor Mode.

Use the Pro−ID login screen to log into the machine.

MACHINE STATUS BUTTON

The machine status button allows access to four different machine status indicators. The default display shows the fuel indicator when the machine is turned on. Any of the four indicators can be set as the default display until the machine is turned off.

Press the machine status button to access all four machine status buttons. All four machine status buttons appear in the display for several seconds until the default buttons reappear in the display.

Use the keypad to enter the user login number into the display above the keypad.

Press the Enter button to log into the  machine.

Press the backspace button if necessary to delete and reenter a number.

When the Pro−Panel is in the Supervisor Mode, a gear symbol will appear in the lower right part of the screen. When it is in the Operator Mode, a video symbol will appear.

The Fuel indicator displays the amount of fuel left in the tank. The fault indicator will flash and a low fuel message will appear when the tank is near empty.

The hour meter records the hours the  machine was operated. Use this information  to determine machine service intervals.

20 M20 Diesel 9016060 (09−2016)

OPERATION

1−STEP BUTTON

The solution tank indicator displays the amount of liquid in the solution tank. Refill the solution tank when there are no longer any bars shown in the display. The machine will stop scrubbing when the solution tank is empty.

The recovery tank full indicator displays FULL when the recovery tank is full. All scrubbing functions will stop when the recovery tank is full. Empty the recovery tank when the indicator displays FULL.

CHANGING THE DEFAULT BUTTON

Press the desired machine status button while all four machine status buttons appear in the display to change it to the new default button. The other three machine status buttons will disappear from the display and the newly selected machine status button will become the default until the machine is turned off. The fuel indicator button will once again be the default when the machine is turned on.

Press the 1−STEP button to activate all selected sweeping or scrubbing functions. Press the 1−STEP button again when finished cleaning to stop all scrubbing or sweeping functions.

NOTE: The squeegee will remain down and the vacuum fan will remain on for a few seconds to pick up remaining water after the 1−STEP button is deactivated.

The 1−STEP button and all selected scrubbing or sweeping function buttons will illuminate when the 1−STEP button is pressed.

The edges of all selected sweeping and scrubbing buttons will be illuminated to show that they are in the standby mode prior to the 1−STEP button being pressed. The selected buttons will become fully illuminated when the 1−STEP button is pressed.

M20 Diesel 9016060 (2−2020) 21

OPERATION

SWEEPING MAIN BRUSH BUTTON

Turn on the sweeping main brush: Press the sweeping main brush button. The button will illuminate.

Turn off the sweeping main brush: Press the sweeping main brush button. The button will turn off.

** NOTE:** The sweeping mode and the scrubbing mode cannot both function at the same time. The sweeping mode will cease operating and the scrubbing mode will begin operating if any scrub button is pressed while the machine is in the sweeping mode.

SWEEPING VACUUM FAN BUTTON

Turn on the sweeping vacuum fan: Press the sweeping vacuum fan button. The button will illuminate.

Turn off the sweeping vacuum fan: Press the sweeping vacuum fan button. The button will turn off.

SWEEPING SIDE BRUSH BUTTON (OPTION)

Turn on the sweeping side brush: Press the sweeping side brush button. The button will illuminate.

Turn off the sweeping side brush: Press the sweeping side brush button. The button will turn off.

NOTE: The sweeping side brushes cannot operate independently from the main sweep brushes.
The main sweep brushes also come on when the sweeping side brush button is pushed.

SCRUBBING MAIN BRUSH BUTTON

Turn on the scrubbing main brush: Press the scrubbing main brush button. The button will illuminate.

Turn off the scrubbing main brush: Press the scrubbing main brush button. The button will turn off.

** NOTE:** The scrubbing mode and the sweeping mode cannot both function at the same time. The scrubbing mode will cease operating and the sweeping mode will begin operating if any sweep button is pressed while the machine is in the scrubbing mode.

22 M20 Diesel 9016060 (09−2016)

SCRUBBING VACUUM FAN / SQUEEGEE BUTTON

Lower squeegee and turn vacuum fan on: Press the scrubbing vacuum fan / squeegee button. The button will illuminate.

Raise squeegee and turn vacuum fan off: Press the vacuum fan / squeegee button. The button will turn off.

SCRUBBING SIDE BRUSH BUTTON (OPTION)

Turn on the scrubbing side brush: Press the scrubbing side brush button. The button will illuminate.

Turn off the scrubbing side brush: Press the scrubbing side brush button. The button will turn off.

NOTE: The scrubbing side brush cannot operate independently from the main scrub brushes. The main scrub brushes also come on when the scrubbing side brush button is pushed.

OPERATION

SOLUTION ON / OFF BUTTONS

The solution flow is designed to stay on whenever the scrub brushes are on. It can be turned off for ten seconds with the solution on / off button to go around corners, etc. See also SETTING THE SOLUTION FLOW section.

Shut off the solution flow (for ten seconds): Press the solution on / off button. All the solution flow indicators will turn off. (The solution flow will automatically restart at the end of the 10 second delay).

Turn on the solution flow: Press the solution on / off button. The solution indicators will turn back on and the solution flow will default to the last setting used.

M20 Diesel 9016060 (09−2016) 23

OPERATION

ENGINE SPEED BUTTON

The engine speed is controlled automatically when the 1−STEP button is pressed. When not sweeping or scrubbing, press the engine speed button to increase the engine RPM for increased travel speed. Press the engine speed button again to reduce the engine RPM.

The engine speed button is illuminated when the engine is in the high speed setting.

The engine speed button is off when the engine is in the low speed setting.

ZONE CONTROL BUTTONS

Machines equipped with the Pro−Panel can be pre− programmed for up to four preset scrubbing / sweeping settings for different floor cleaning applications. These must be set up ahead of time using the supervisor mode. See PROGRAMMING THE ZONE CONTROL BUTTONS section.

Press the required zone control button. The selected preset button will illuminate and the name of the zone appears above the button. The solution flow indicator bar / adjustment buttons and brush pressure indicator bar / adjustment buttons briefly appear in the display to show the settings for the selected zone.

24 M20 Diesel 9016060 (09−2016)

OPERATION

REARVIEW CAMERA BUTTON

Press the rearview camera button to check cleaning performance. The rearview camera screen will appear in the control panel display for a short amount of time. The main operating screen returns to the control panel after the rearview camera times out. Touch anywhere on the control panel display to turn off the rearview camera and return to the main operating screen.

FOR SAFETY: When using machine, always be aware of your surroundings.

The camera automatically comes on when the bottom of the directional pedal is pressed to place the machine in reverse and remains on the entire time the machine is in reverse.

The rearview camera is located on the recovery tank, above where the vacuum hose is attached to the recovery tank.

M20 Diesel 9016060 (09−2016) 25

OPERATION

HELP BUTTON

FOR SAFETY: When using machine, do not access the video / help screens while the machine is moving. (Pro−Panel)

Press the help button to access the help screen.

Press the applicable button for the help topic needed.

Press the select language button to go to the language screen.

Press the login / logout button to log in / log out of the machine operating system.

Press the controls help button to access the controls help screen.

Press the start−up video button to watch the start−up video.

Press the about button to access machine operating system information.

Press the Pre−Operation Checklist button to access the Pre−Operation Checklist.

Press the select language button. Select an applicable language from the list to change the machine operating system language. A flag designating the country language selected will appear at the top of the screen.

Press the down arrow button to scroll down through the language list.

Press the up arrow button to scroll up through the language list.

Press the back arrow button to return to the previous screen

Press the Pre−Operation Checklist button to access the Pre−Operation Checklist.

Press the control help button to access information about the Pro−Panel controls.

Press the back arrow button to return to the main help screen.

Press the home button to return to the main operating screen.

Press the about button to access information about the operating system software.

Press the down arrow button to scroll down through the list.

Press the up arrow button to scroll up through the list.

Press the Pre−Operation Checklist button to access the Pre−Operation Checklist.

Press the back arrow button to return to the previous screen.

Press the forward arrow button to access machine information from the list.

M20 Diesel 9016060 (09−2016) 27

OPERATION

VIDEO HELP BUTTON

FOR SAFETY: When using machine, do not access the video / help screens while the machine is moving. (Pro−Panel)

NOTE: Stop machine before accessing video help screen / videos. Do Not access the video help screen / videos while the machine is moving.

Press the video button to access the video help screen.

Press the applicable video button to view the help video for a particular machine component.

Press the rotate machine button to access video help buttons located on the front, back, or other side of the machine.

Press the home button to return to the main operating screen.

Press the back arrow button to return to the previous screen.

Press the video list button to access a text list of all help videos.

Select an applicable video from the list to view the video if the video list button was pressed to access the video list.

Press the down arrow button to scroll down through the list.

Press the up arrow button to scroll up through the list.

Press the Pre−Operation Checklist button to access the Pre−Operation Checklist.

Press the back arrow button to return to the previous screen.

28 M20 Diesel 9016060 (2−2020)

OPERATION

COMPLETING THE PRO−CHECK

PRE−OPERATION CHECKLIST

Machines equipped with the Pro−Panel controls can be pre−programmed with the Pro−Check Pre−Operation Checklist the operator must complete before operating the machine.

Press the down arrow button to scroll down through checklist.

Press the up arrow button to scroll up through checklist.

Press the complete (check mark) button to confirm the checklist item was checked. Press the problem found (X) button if a problem is found when checklist item is checked.

Press the video help button to view the video related to a particular checklist item.

Press the enter button when ready to start using the machine after completing the checklist.

Press the help button to access the

Pro−Check Pre−Operation Checklist help screen.

Press the back button to return to the

Pre−Operation Checklist.

The operator is not allowed to access the main operating screen / use machine until the Pro−Check Pre−Operation Checklist is completed. Press the back arrow button to return to the checklist screen.

M20 Diesel 9016060 (09−2016) 29

OPERATION

OPERATION OF CONTROLS − ALL MACHINES
OPERATING LIGHTS

Push the top of the Operating / hazard light switch to turn on the headlights and taillights. Return the light switch to the center position to turn off the lights.

FILTER SHAKER SWITCH

Press the filter shaker switch. The filter shaker will operate for 30 seconds.

The filter shaker switch light will illuminate while the filter shaker is operating. Press the top of the filter shaker switch again if necessary to stop the filter shaker.

HAZARD LIGHT (OPTION)

Press the bottom of the Operating / hazard light switch to turn on the hazard light, headlights, and taillights. Return the light switch to the center position to turn off the lights.

GLOW PLUG LIGHT (PREHEAT)

The Glow plug light comes on when the ignition switch is turned counterclockwise to the preheat position. The light will stay on when the key is held in this position.

30 M20 Diesel 9016060 (09−2016)

OPERATION

OPERATOR SEAT

The operator seat has two adjustments: operator weight and front to back.

The weight adjustment knob controls the firmness of the operator seat.

Increase firmness: Turn the weight adjustment knob clockwise.

Decrease firmness: Turn the weight adjustment knob counterclockwise.

The front−to−back adjustment lever adjusts the seat position.

** Adjust:** Push to lever in towards the seat and slide the seat to the desired position. Release the lever to lock the seat into place.

SEAT BELTS

Always fasten and adjust the seat belts before operating the machine.

STEERING COLUMN TILT KNOB

1. Pull the Steering column tilt knob and adjust the steering column to the desired height.

2. Release the Steering column tilt handle.

M20 Diesel 9016060 (09−2016) 31

OPERATION

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.

DIRECTIONAL PEDAL

Press the top of the Directional pedal to move forward and the bottom of the pedal to move backward. The backup lights will come on when the machine is in reverse. The pedal returns to the neutral position when it is released.

** NOTE:** An audible alarm will sound and the backup light will flash when backing the machine if equipped with the optional backup alarm.

SQUEEGEE PROTECTORS (OPTION)

The rear and side squeegee protectors help protect the rear squeegee from being damaged.

To engage the rear squeegee protector, pull the pin, lower the protector bar, and reinsert the pin.

32 M20 Diesel 9016060 (09−2016)

HOW THE MACHINE WORKS

This machine can effectively scrub or sweep dirty floors. The 1−STEP button makes it possible to immediately begin scrubbing or sweeping.

The 1−STEP button operates either the sweeping functions or scrubbing functions. (The machine also sweeps while scrubbing).

When in the conventional Scrub mode, a water and detergent mixture is used to scrub the floor.

The Detergent Metering option can provide an increased detergent flow for areas with extraordinary dirt or soil buildup.

When in the optional FaST (Foam scrubbing) mode, the FaST scrubbing system mixes the FaST−PAK concentrate with a small amount of water, creating a large volume of expanded wet foam. The FaST system can be used with all double scrubbing and heavy duty scrubbing applications.

OPERATION

When in the optional ES (Extended Scrub) mode, the dirty solution in the recovery tank is filtered through the ES system and returned to the solution tank for reuse. Detergent is then injected into the returned solution to revitalize the cleaning capability of the solution.

When in the optional ec−H2O (electrically converted water) mode, normal water passes through a module where it is oxygenated and charged with an electric current. The electrically converted water changes into a blended acidic and alkaline solution forming a neutral pH cleaner. The converted water attacks the dirt, breaks it into smaller particles, and pulls it off the floor surface allowing the machine to easily scrub away the suspended soil. The converted water then returns to normal water in the recovery tank. The ec−H2O system can be used while double scrubbing.

M20 Diesel 9016060 (9−2022) 33

OPERATION

BRUSH INFORMATION

For best results, use the correct brush type for the cleaning application. Listed below are the brushes and the applications for which each is best suited.

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.

PolyPro brush − Heavy duty polypropylene bristles provide a more aggressive cleaning performance and can more easily lift compacted dirt, debris, and sand while offering excellent scrubbing performance.

Polypropylene brush − General purpose polypropylene bristles lift lightly compacted dirt without scuffing high-gloss coated floors.

Polyester brush − Softer general purpose polyester bristles lift light debris while sweeping and gently clean while scrubbing. Perfect for sensitive floor surfaces. Polyester does not absorb water so it is preferred over Nylon in wet applications.

Super AB brush − Nylon fiber impregnated with abrasive grit to remove stains and compacted dirt. Aggressive action on any surface. Performs well on buildup, grease, or tire marks.

WHILE OPERATING THE MACHINE

Pick up oversized debris before scrubbing or sweeping. Pick up wire, string, twine, large pieces of wood, or any other debris that could become wrapped around or tangled in the brushes.

Drive as straight a path as possible. Avoid bumping into posts or scraping the sides of the machine. Overlap the scrub/sweep paths by several centimeters (a few inches).

Avoid turning the steering wheel too sharply when the machine is in motion. The machine is very responsive to the movement of the steering wheel. Avoid sudden turns, except in emergencies.

Adjust the machine speed, brush pressure, and solution flow as required when scrubbing. Use the lowest brush pressure and solution flow settings for best performance. If the machine is equipped with the FaST or ec−H2O system, use the FaST or ec−H2O system for the best scrubbing results.

Keep the machine moving to prevent damaging floor finishes.

If poor cleaning performance is observed, stop cleaning and refer to MACHINE

TROUBLESHOOTING in this manual.

If any faults occur, correct the problem before continuing to operate the machine.

Perform the Daily Maintenance Procedures after each use (see MACHINE MAINTENANCE in this manual).

Drive the machine slowly on inclines. Use the brake pedal to control machine speed on descending inclines. Scrub with the machine up inclines rather than down inclines.

FOR SAFETY: When using machine, go slowly on inclines and slippery surfaces.

Do not operate machine in areas where the ambient temperature is above 43 C (110 F). Do not operate scrubbing functions in areas where the ambient temperature is below freezing 0 C (32 F).

FOR SAFETY: When using machine, do not scrub on ramp inclines that exceed 10% grade or transport (GVWR) on ramp inclines that exceed 14% grade.

34 M20 Diesel 9016060 (11−2023)

OPERATION

PRE−OPERATION CHECKLIST

 Check the hydraulic fluid level.

 Check the fuel level.

 Check the machine for fluid leaks.

 Check the condition of the main brushes. Remove string, banding, plastic wrap, or other debris wrapped around the brushes and brush motors.

 Check the main brush compartment right skirts, seals, and squeegee for damage and wear.

 Side Brush Option: Check the condition of the brush. Remove string, banding, plastic wrap, or other debris wrapped around the brush.

 Side Brush Option: Check the condition of the side brush skirt or squeegee.

 Check the radiator and hydraulic cooler fins for debris.

 Check the engine coolant level.

 Check the engine oil level.

 Check the main brush compartment left skirts, seals, and squeegee for damage and wear.

 Check the left solution tank cover seal for damage and wear.

 Check the recovery tank cover seal for damage and wear.

 Clean the vacuum fan debris filter.

 Drain and clean the recovery tank.

 ES Option: Drain and clean the solution tank, float sensor, and ES filter.

 Check the right solution tank cover seal for damage and wear.

 Check the condition of the hopper dust filter and seals.

 Clean the hopper and the debris screen.

 Check the squeegee hose for debris or blockage.

 Check the squeegees for damage, wear, and deflection adjustment.

 FaST Scrubbing: Check the FaST−PAK concentrate agent level. Replace carton as needed. See the INSTALLING THE

FaST−PAK CARTON section of the manual.

 FaST Scrubbing: Ensure all conventional cleaning agents are drained and rinsed from the solution tank.

 FaST Scrubbing: Ensure the solution tank is filled with clear cool water only.

 Check the headlights, taillights, and safety lights.

 Check the brakes and steering for proper operation.

 Check the service records to determine maintenance requirements.

M20 Diesel 9016060 (11−2023) 35

OPERATION

STARTING THE MACHINE

1. Sit in the operator seat and press the brake pedal or set the parking brake.

FOR SAFETY: When starting machine, keep foot on brake and directional pedal in neutral.

2. Turn the key counterclockwise. The glow plug light will come on. Hold the key in this position for 15 to 30 seconds, depending on weather conditions. Colder weather requires longer time.

3. Turn the key clockwise to start the engine.

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 15−20 seconds between starting attempts or damage to the starter motor may occur.

4. Allow the engine and hydraulic system to warm up for three to five minutes.

WARNING: Engine 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.

5. Turn on lights.

TURNING OFF THE MACHINE

1. Stop the machine and turn off all scrubbing/ sweeping functions.

2. Turn the ignition switch key counter clockwise to turn off the machine. Remain in the operator seat until the engine is off.

FOR SAFETY: 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.

36 M20 Diesel 9016060 (09−2016)

OPERATION

FILLING THE SOLUTION TANK

FOAM SCRUBBING (FaST MODE) / ec−H2O SCRUBBING (ec−H2O MODE)

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, turn off machine, and remove key.

1. Open either the left or right solution tank fill cover.

2. Fill the solution tank with only clean COOL WATER (less than 21°C / 70°F). DO NOT use hot water or add any conventional floor cleaning detergents or FaST/ec−H2O system failure may result.

WARNING: Flammable materials can cause an explosion or fire. Do not use flammable materials in tank(s).

NOTE: To install or change the FaST−PAK carton, see the REPLACING THE FaST−PAK CARTON section of the manual.

NOTE: Do not use the FaST or ec−H2O system when there are conventional cleaning detergents in the solution tank. Drain, rinse, and refill the solution tank with clear cool water before operating the FaST or ec−H2O system. Conventional cleaning detergents may cause a FaST / ec−H2O system failure.

CONVENTIONAL SCRUBBING MODE

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, turn off machine, and remove key.

1. Open either the left or right solution tank fill cover.

2. Partially fill solution tank with water (not to exceed 60°C / 140°F). Pour the required amount of detergent into the solution tank. Fill the solution tank with water until the level is just below the indicator tab.

WARNING: Flammable materials can cause an explosion or fire. Do not use flammable materials in tank(s).

ATTENTION: For Conventional Scrubbing, only use recommended cleaning detergents. Machine damage due to improper detergent usage will void the manufacturer’s warranty.

NOTE: Pour a recommended foam control solution into the recovery tank if excessive foam appears. For specific detergent recommendations, contact a TENNANT representative.

M20 Diesel 9016060 (09−2016) 37

OPERATION

ES (EXTENDED SCRUB) MODE WITH AUTO−FILL

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, and turn off machine.

1. Connect the hose from the water source (not to exceed 60°C / 140°F) to the auto−fill connection.

ES (EXTENDED SCRUB) MODE − MANUALLY FILLING TANKS

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, and turn off machine.

1. Open either the left or right solution tank cover and fill the solution tank with water (not to exceed 60°C / 140°F) until the level is just below the indicator tab.

2. Turn the ignition switch to the on position (without starting) and turn on the water source. The auto−fill automatically fills the tanks to the proper level.

3. Fill the detergent tank with the proper detergent.

WARNING: Flammable materials can cause an explosion or fire. Do not use flammable materials in tank(s).

ATTENTION: For ES Scrubbing, only use recommended low−foaming cleaning detergents. Machine damage due to the use of improper detergent will void the manufacturer’s warranty.

2. Open the recovery tank cover and fill the recovery tank with water (not to exceed 60°C / 140°F) until the recovery tank is approximately half full.

WARNING: Flammable materials can cause an explosion or fire. Do not use flammable materials in tank(s).

38 M20 Diesel 9016060 (09−2016)

OPERATION

SETTING SCRUB MODES

Before scrubbing, determine which scrub mode will be used (FaST, ES, ec−H2O or conventional). Then set the scrub brush pressure and adjust the solution flow levels. The machine will default to the last setting used when it is powered on or off.

SETTING ec−H2O MODE

NOTE: Storage or transporting machines equipped with ec−H2O in freezing temperatures requires special procedures. Follow the freeze protection procedure located in the STORAGE INFORMATION section.

Machines equipped with standard control panel: The ec−H2O button enables the ec−H2O system to come on when the 1−STEP button is activated. The light above the button will come on.

Standard Panel

A flashing red light located on the bottom portion of the LED (light−emitting diode) light directly above the ec−H2O button indicates when the ec−H2O system needs to be flushed. See ec−H2O MODULE FLUSH PROCEDURE in the MAINTENANCE section

Standard Panel

Machines equipped with Pro−Panel controls: The background will change from black to the multicolored background, the slash disappears from the ec−H2O button, and the button is illuminated when the ec−H2O button is pushed to indicate it is active.

Pro−Panel

The ec−H2O button will turn red, the fault / alert indicator button will flash, and an ec−H2O error message will appear in the display when there is an ec−H2O error.

M20 Diesel 9016060 (09−2016) 39

OPERATION

SETTING FaST MODE

Machines equipped with standard control panel: The FaST button enables the FaST system to come on when the 1−STEP button is activated. The light next to the button will come on.

Standard Panel

Machines equipped with Pro−Panel controls: The slash disappears from the FaST button and the button is illuminated when the FaST button is pushed to indicate it is active.

SETTING ES (EXTENDED SCRUB) MODE

NOTE: When the ES system is turned on there is a slight delay before the ES pump begins operating.

Machines equipped with standard control panel: The ES button enables the ES system to come on when the 1−STEP button is activated. The light next to the button will come on.

Standard Panel

Machines equipped with Pro−Panel controls: The slash disappears from the ES button and the button is illuminated when the ES button is pushed to indicate it is active.

40 M20 Diesel 9016060 (09−2016)

SETTING BRUSH PRESSURE

Under normal cleaning conditions, the brush pressure should be set to the lowest setting. Under heavy grime conditions, the brush pressure can be set to a higher setting. Travel speed and floor conditions will affect cleaning performance. If brushes are worn, it may be necessary to increase the brush pressure. The machine will default to the last setting used when it is powered on or off.

SETTING BRUSH PRESSURE − STANDARD PANEL

With the 1−STEP button activated, press the brush pressure button to both raise or lower the brush pressure settings. The brush pressure indicator lights display the current brush pressure setting.

OPERATION

SETTING BRUSH PRESSURE − PRO−PANEL

Press the brush pressure button to access the brush pressure increase (+) button, the brush pressure decrease (−) button, and the brush pressure indicator bar.

Use the brush pressure increase (+) button and the brush pressure decrease (−) button to change the brush pressure. The brush pressure indicator bar displays the current brush pressure setting.

M20 Diesel 9016060 (09−2016) 41

OPERATION

SETTING SOLUTION FLOW

Travel speed and floor conditions will affect scrubbing performance. Under normal soilage conditions the solution flow level should be set to the lowest setting. Under heavy grime conditions, the solution flow level should be set to the higher settings. The machine will default to the last setting used when the machine is powered on or off.

ES (EXTENDED SCRUB) SOLUTION FLOW

For ES machines, the detergent flow is turned off when the solution flow is in the lowest setting. Under normal soilage conditions, the solution flow level should be alternated between the middle and lowest setting. The middle setting allows solution AND detergent flow. The lowest setting allows solution flow WITHOUT adding detergent. Detergent does not have to be continuously added with the solution flow to attain effective scrubbing results.

SETTING SOLUTION FLOW − STANDARD PANEL

With the 1−STEP button activated, press either solution increase (+) button or solution decrease (−) button to set the solution flow level. The solution flow indicator lights display the current solution flow setting.

SETTING SOLUTION FLOW − PRO−PANEL

Press the solution flow button to access the solution increase (+) button, the solution decrease (−) button, and the solution flow indicator bar.

Use the solution increase (+) button and the solution decrease (−) button to set the solution fl ow level. The solution flow indicator bar displays the current solution flow setting.

42 M20 Diesel 9016060 (2−2020)

OPERATION

SCRUBBING − STANDARD PANEL

The 1− STEP button operates all the scrubbing functions. (The machine also wet sweeps while scrubbing).

FOR SAFETY: Do not operate machine, unless operator manual is read and understood.

1. Start the machine.

NOTE: Make sure the scrubbing modes / settings are set before scrubbing.

2. Press the 1−STEP button. The light above the button will come on. All the preset scrubbing functions will turn on.

NOTE :  DO NOT turn on the FaST or ec−H2O system during conventional scrubbing. Conventional cleaning detergents could cause a FaST or ec−H2O system failure. Drain, rinse, and refill the solution tank with cool clean water before operating the FaST or ec−H2O system.

3. Release the parking brake, then press the Directional pedal to begin scrubbing.

WARNING: Flammable materials or reactive metals can cause an explosion or fire. Do not pick up.

FOR SAFETY: When using machine, go slow on inclines and slippery surfaces.

NOTE : The squeegee automatically rises when the machine is driven backwards.
This prevents damaging the squeegee.

4. Release the directional pedal and press the brake pedal to stop the machine.

5. Press the 1−STEP button to stop scrubbing. The light above the button will go off and the scrubbing functions will stop after a short delay.

** NOTE:** If the machine was using the sweeping functions, the filter shaker automatically shakes the filter for a short time each time the 1−STEP button is turned off.

NOTE: If there is a fault or alert code during machine operation, stop the machine and refer to the FAULTS / ALERTS section of this manual for the cause and the corrective action for eliminating the fault or alert.

6. Empty the debris hopper and recovery tank at the end of each shift or as needed. See EMPTYING THE HOPPER and DRAINING AND CLEANING THE RECOVERY TANK sections of this manual.

M20 Diesel 9016060 (09−2016) 43

OPERATION

SCRUBBING − PRO−PANEL

The 1− STEP button operates all the scrubbing functions. (The machine also wet sweeps while scrubbing).

FOR SAFETY: Do not operate machine, unless operator manual is read and understood.

1. Start the machine.

2. If applicable, log into the machine. See PRO−ID LOGIN SCREEN.

3. If applicable, complete the Pro−Check Pre− Operation Checklist. See COMPLETING THE PRO−CHECK PRE−OPERATION CHECKLIST.

NOTE: Make sure the scrubbing modes / settings are set before scrubbing.

4. Press the 1−STEP button. The 1−STEP button and all other selected scrubbing buttons will illuminate.

NOTE : DO NOT turn on the FaST or ec−H2O system during conventional scrubbing. Conventional cleaning detergents could cause a FaST or ec−H2O system failure. Drain, rinse, and refill the solution tank with cool clean water before operating the FaST or ec−H2O system.

5. Release the parking brake, then press the Directional pedal to begin scrubbing.

WARNING: Flammable materials or reactive metals can cause an explosion or fire. Do not pick up.

FOR SAFETY: When using machine, go slow on inclines and slippery surfaces.

NOTE : The squeegee automatically rises when the machine is driven backwards. This prevents damaging the squeegee.

6. Press the rearview camera button at any time to check cleaning performance behind the machine.

7. Release the directional pedal and press the brake pedal to stop the machine.

8. Press the 1−STEP button to stop scrubbing. The button will no longer be illuminated and scrubbing / sweeping functions will stop after a short delay.

NOTE: If the machine was using the sweeping functions, the filter shaker automatically shakes the filter for a short time each time the 1−STEP button is turned off.

NOTE: If there is a fault or alert code during machine operation, stop the machine and refer to the FAULTS / ALERTS section of this manual for the cause and the corrective action for eliminating the fault or alert.

9. Empty the debris hopper and recovery tank at the end of each shift or as needed. See EMPTYING THE HOPPER and DRAINING AND CLEANING THE RECOVERY TANK sections of this manual.

44 M20 Diesel 9016060 (09−2016)

OPERATION

DOUBLE SCRUBBING

Double scrubbing is the process of making two or more passes over a heavily soiled area. The first pass is made with the rear and side squeegees raised to allow the solution to soak into the floor. Use the double scrubbing method to clean heavily soiled areas.

Double scrubbing can be performed using the  FaST SCRUBBING SYSTEM (option), ec−H2O SCRUBBING SYSTEM (option) or  CONVENTIONAL SCRUBBING methods.

Before double scrubbing, remove the side brush bumper. Pull the pins and remove the squeegee bumper.

** NOTE:** Make sure the scrubbing modes / settings are set before scrubbing.

Machines equipped with standard panel: Press the 1−STEP button, and then the Scrub vacuum fan/squeegee button. The light above the Scrub vacuum fan/squeegee button will turn off, the squeegee will rise, and the vacuum fan will stop operating. Scrub the heavily soiled area.

Standard Panel

NOTE: Make sure the scrubbing modes / settings are set before scrubbing.

Machines equipped with Pro−Panel: Press the 1−STEP button and then the vacuum fan / squeegee button. The vacuum fan / squeegee button will no longer be illuminated, the squeegee will rise, and the vacuum fan will stop operating. Scrub the heavily soiled area.

Pro−Panel

Let the cleaning solution soak on the floor for 5−15 minutes. Reinstall the side brush squeegee bumper onto the side brush.

FOR SAFETY: When using machine, go slow on inclines and slippery surfaces.

Press the Scrub vacuum fan/squeegee button again to lower the squeegee and turn on the vacuum fan. Scrub the floor a second time to pick up the cleaning solution.

WARNING: Flammable materials or reactive metals can cause an explosion or fire. Do not pick up.

NOTE : If needed, reduce solution flow when scrubbing the floor for a second time.

NOTE :  Double scrubbing is not recommended in areas where the cleaning solution will run under racks or damage products.

M20 Diesel 9016060 (09−2016) 45

OPERATION

WATER PICKUP MODE (NO SCRUBBING)

The machine can be used to pick up water or non−flammable liquid spills without scrubbing.

WARNING: Flammable materials or reactive metals can cause an explosion or fire. Do not pick up.

Before picking up water or non−flammable liquid spills, make sure the 1−STEP button is activated and all other cleaning functions are off.

Machines equipped with standard control panel: Press the scrubbing vacuum fan / squeegee button. The light above the button will illuminate, the squeegee will lower, and the vacuum fan will start operating. Pick up the water or non−flammable liquid spill.

Standard Panel

Machines equipped with Pro−Panel controls: Press the scrubbing vacuum fan / squeegee button. The button will illuminate, the squeegee will lower, and the vacuum fan will start operating. Pick up the water or non−flammable liquid spill.

Pro−Panel

46 M20 Diesel 9016060 (09−2016)

OPERATION

SWEEPING − STANDARD PANEL

NOTE: The 1− STEP button operates all the sweeping functions (without scrubbing).

FOR SAFETY: Do not operate machine, unless operator manual is read and understood.

Side brush option: Before sweeping, remove the side brush bumper. Pull the pins and remove the squeegee bumper.

1. Start the machine.

NOTE: Make sure the sweeping modes / settings are set before sweeping.

2. Press the 1−STEP button. The light above the button will come on. All the preset sweeping functions will turn on.

3. Release the parking brake, then press the Directional pedal to begin sweeping.

WARNING: Flammable materials or reactive metals can cause an explosion or fire. Do not pick up.

FOR SAFETY: When using machine, go slow on inclines and slippery surfaces.

NOTE: Press the sweep vacuum fan button to turn off the vacuum fan when sweeping over large wet areas or standing water. This prevents the hopper dust filter from getting wet while sweeping.

4. Release the directional pedal and press the brake pedal to stop the machine.

5. Press the 1−STEP button to stop sweeping. The light near the button will go off and the sweeping functions will stop after a short delay.

** NOTE:** If the machine was using the sweeping functions, the filter shaker automatically shakes the filter for a short time each time the 1−STEP button is turned off.

NOTE: If there is a fault or alert code during machine operation, stop the machine and refer to the FAULTS / ALERTS section of this manual for the cause and the corrective action for eliminating the fault or alert.

6. Empty the debris hopper and recovery tank at the end of each shift or as needed. See EMPTYING THE HOPPER and DRAINING AND CLEANING THE RECOVERY TANK sections of this manual.

M20 Diesel 9016060 (09−2016) 47

OPERATION

SWEEPING − PRO−PANEL

NOTE: The 1− STEP button operates all the sweeping functions (without scrubbing).

FOR SAFETY: Do not operate machine, unless operator manual is read and understood.

Side brush option: Before sweeping, remove the side brush bumper. Pull the pins and remove the squeegee bumper.

1. Start the machine.

2. If applicable, log into the machine. See PRO−ID LOGIN SCREEN.

3. If applicable, complete the Pro−Check Pre− Operation Checklist. See COMPLETING THE PRO−CHECK PRE−OPERATION CHECKLIST.

NOTE: Make sure the sweeping modes / settings are set before sweeping.

4. Press the 1−STEP button. The 1−STEP button and all other selected sweeping buttons will illuminate.

5. Release the parking brake, then press the Directional pedal to begin sweeping.

WARNING: Flammable materials or reactive metals can cause an explosion or fire. Do not pick up.

FOR SAFETY: When using machine, go slow on inclines and slippery surfaces.

NOTE: Press the sweep vacuum fan button to turn off the vacuum fan when sweeping over large wet areas or standing water. This prevents the hopper dust filter from getting wet while sweeping.

6. Press the rearview camera button at any time to check cleaning performance behind the machine.

7. Release the directional pedal and press the brake pedal to stop the machine.

48 M20 Diesel 9016060 (09−2016)

OPERATION

8. Press the 1−STEP button to stop sweeping. The button will no longer be illuminated and sweeping functions will stop after a short delay.

NOTE: If the machine was using the sweeping functions, the filter shaker automatically shakes the filter for a short time each time the 1−STEP button is turned off.

NOTE: If there is a fault or alert code during machine operation, stop the machine and refer to the FAULTS / ALERTS section of this manual for the cause and the corrective action for eliminating the fault or alert.

9. Empty the debris hopper and recovery tank at the end of each shift or as needed. See EMPTYING THE HOPPER and DRAINING AND CLEANING THE RECOVERY TANK sections of this manual.

M20 Diesel 9016060 (09−2016) 49

OPERATION

EMPTYING THE HOPPER

1. Drive the machine to a debris site or container.

2. Press the filter shaker switch. The shaker operates for approximately 30 seconds. The indicator light comes on while the filter shaker is operating. Press the top of the filter shaker switch again if necessary to stop the filter shaker.

3. After the filter shaker stops, press and hold the top of the Hopper raise/lower switch to raise the hopper. Release the button when the hopper is at the desired position.

FOR SAFETY: When using machine, make sure adequate clearance is available before raising hopper. Do not raise hopper when machine is on an incline.

NOTE : Be aware the minimum ceiling height needed to raise the hopper is 2500 mm (98 in).

4. Slowly back the machine up to the debris container.

FOR SAFETY: When using machine, use care when reversing machine. Move machine with care when hopper is raised.

5. Press and hold the bottom of the Hopper door open/close switch to open the hopper door and empty the contents from the hopper.

6. Slowly drive the machine forward away from the debris site or container.

7. Stop the machine, then press and hold the bottom of the Hopper raise/lower switch until the hopper is completely lowered.

NOTE : The hopper door will close automatically when the hopper is lowered. The hopper door can be closed by pressing the top of the hopper door open/close switch.

50 M20 Diesel 9016060 (09−2016)

OPERATION

ENGAGING HOPPER SUPPORT PIN

The hopper support pin is a safety feature used to prevent the raised hopper from falling. Always use the hopper support pin whenever leaving the hopper in a raised position.

1. Stop the machine.

2. Press and hold the top of the Hopper raise/lower switch to raise the hopper. Release the switch when the hopper is at the desired position.

WARNING: Lift arm pinch point. Stay clear of hopper lift arms.

FOR SAFETY: When using machine, make sure adequate clearance is available before raising hopper.

3. Set the parking brake.

4. Remove the hopper support pin from the storage tube.

5. Insert the hopper support pin into one of the three hopper support holes. Lower the hopper until it rests on the support pin.

WARNING: Raised hopper may fall. Engage hopper support pin.

DISENGAGING HOPPER SUPPORT PIN

1. Set the parking brake.

2. Press and hold the top of the Hopper raise/lower switch until the hopper is off the support pin.

3. Remove the hopper support pin from the hopper support hole and insert it into the storage tube.

4. Sit in the operators seat, then press and hold the bottom of the Hopper raise/lower switch until the hopper is completely lowered.

** WARNING:** Lift arm pinch point. Stay clear of hopper lift arms.

M20 Diesel 9016060 (09−2016) 51

OPERATION

REMOVING THE HOPPER DUST FILTER

NOTE : Empty hopper before removing the hopper dust filter.

1. Raise the hopper to the middle support position and engage the hopper support pin. See ENGAGING HOPPER SUPPORT PIN section of this manual.

NOTE : Do NOT raise the hopper to the top support position when accessing the dust filter.

WARNING: Raised hopper may fall. Engage hopper support pin.

WARNING: Lift arm pinch point. Stay clear of hopper lift arms.

2. Turn off the machine.

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, turn off machine, and remove key.

3. Loosen the hose clamp on the squeegee vacuum hose.

4. Disconnect the squeegee vacuum hose from the hopper.

5. Unhook the handles from the filter cover.

6. Open the filter cover and rest it against the machine.

7. Remove the dust filter and perma−filter tray from the hopper.

8. Clean or discard the dust filter. See the CLEANING THE HOPPER DUST FILTER section of this manual.

9. Place the perma−filter tray into the hopper.

10. Place the cleaned or new dust filter into the hopper. Position the filter screen side up as shown below.

11. Close the filter cover and secure the filter cover to the hopper with the handles.

12. Reconnect the squeegee vacuum hose to the hopper.

13. Disengage the hopper support pin and lower the hopper. See the DISENGAGING HOPPER SUPPORT PIN section of this manual.

CLEANING THE HOPPER AND DEBRIS SCREEN

FOR SAFETY: Before leaving or servicing machine, stop on level surface, and set parking brake.

1. Disconnect the vacuum hose from the debris screen.

2. Raise the hopper to the middle support position and engage the hopper support pin. See ENGAGING HOPPER SUPPORT PIN section of this manual.

** WARNING:** Raised hopper may fall. Engage hopper support pin.

WARNING: Lift arm pinch point. Stay clear of hopper lift arms.

3. Turn off the machine.

4. Remove the filter from the hopper. See the REMOVING THE HOPPER DUST FILTER section of this manual.

NOTE : Do NOT raise the hopper to the top support position when accessing the dust filter.

5. Start the machine.

6. Press and hold the bottom of the hopper door open / close switch until the hopper door is completely open.

7. Turn off the machine.

8. Flush dirt and debris from the debris hose and debris screen and out into the hopper.

9. Rinse dirt and debris from the debris screen and the hopper. If necessary, remove the debris screen to clean.

10. Reinstall the hopper dust filter. See REMOVING THE HOPPER DUST FILTER section of this manual.

11. Disengage the hopper support pin and lower the hopper. See the DISENGAGING HOPPER SUPPORT PIN section of this manual.

DRAINING AND CLEANING THE RECOVERY TANK

Drain and clean the recovery tank daily or when the recovery tank full indicator comes on.

Clean the outside of the recovery tank with vinyl cleaner.

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, turn off machine, and remove key.

DRAINING THE RECOVERY TANK WITH THE DRAIN HOSE

1. Lift the recovery tank cover.

2. Place the recovery tank drain hose nozzle next to a floor drain.

3. Open the recovery tank Variable Drain Valve.

4. Rinse dirt and debris down through the drain hole in the demister tray and flush the vacuum hose.

** NOTE:** DO NOT use steam to clean tanks. Excessive heat can damage tanks and components.

5. Remove the vacuum screen from the recovery tank and rinse the screen.

6. Rinse the float sensor.

7. ES machines: Rinse the ES filter. If necessary, remove the ES filter from the recovery tank.

8. Rinse dirt and debris towards the recovery tank drain. Allow the recovery tank to drain.

9. Close the recovery tank Variable Drain Valve.

10. Reinstall the recovery tank drain hose onto the back of the recovery tank and close the recovery tank cover.

DRAINING THE RECOVERY TANK WITH THE DRAIN PLUG

Use the drain plug to drain the recovery tank if the tank is draining slowly or if the drain hose is plugged.

1. Park the machine so the larger drain in the recovery tank is positioned over the disposal drain. Set the parking brake.

2. To avoid getting the hopper filter wet, raise the hopper and engage the hopper support pin in the lowest position.

WARNING: Raised hopper may fall. Engage hopper support pin.

WARNING: Lift arm pinch point. Stay clear of hopper lift arms.

** FOR SAFETY:** Before leaving or servicing machine, stop on level surface, set parking brake, and remove key.

3. Lift the drain plug handle and remove the drain plug from the tank.

4. Open the recovery tank Variable Drain Valve.

5. Remove the recovery tank drain hose from the back of the recovery tank, then rinse the dirt and debris from the hose into the tank.

6. Rinse dirt and debris out the open drain.

7. Clean the drain hole, then reinsert the drain plug. Push the handle down to tighten. Be sure the drain plug is fully seated before tightening.

NOTE: If necessary, turn the handle clockwise for a tighter fit and counterclockwise for a looser fit.

8. Close the recovery tank Variable Drain Valve.

9. Reinstall the recovery tank drain hose onto the back of the recovery tank.

10. Remove the hopper support pin and insert it into the storage tube. Then lower the hopper.

11. Close the recovery tank cover.

DRAINING AND CLEANING THE SOLUTION TANK

The solution tank on non−ES machines does not require regular maintenance. If deposits form on the bottom of the tank, rinse the tank with a strong blast of warm water.

Clean the outside of the solution tank with vinyl cleaner.

The solution tank on machines with the ES option should be drained and cleaned daily.

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, turn off machine, and remove key.

1. Open the solution tank cover(s).

2. Place the solution tank drain hose nozzle next to a floor drain.

3. Open the solution tank Variable Drain Valve.

4. Rinse the solution tank. Flush dirt and debris toward the solution tank drain.

5. Rinse the float sensor and the screen filter. Allow the solution tank to drain.

6. Close the solution tank Variable Drain Valve.

7. Reinstall the solution tank drain hose onto the back of the recovery tank.

8. Close the solution tank cover(s).

FAULTS / ALERTS

The operator will receive a fault / alert warning when there is a mechanical / electronic issue with the machine.

To reset the fault / alert indicators, turn off the machine and then eliminate the cause of the fault / alert. The fault / alert indicator will reset when the machine is restarted.

Refer to the fault / alert indicators table to determine the cause and remedy for the fault / alert.

NOTE: When the machine is turned on without the engine running, the low engine oil pressure, low alternator voltage and check engine lamp faults will appear. This is normal behavior.

FAULT / ALERT INDICATORS − STANDARD PANEL

This machine is equipped with two visual indicators, a red indicator light and an LCD (liquid crystal display).

The red indicator light will blink continuously indicating that a fault / alert has occurred.

FAULT / ALERT INDICATORS − PRO−PANEL

The fault / alert indicator button will flash continuously indicating a fault / alert has occurred. The multicolored background will change to a black background.

Press the flashing red fault indicator button to view the faults. A fault / alert screen will appear in the display.

Press the flashing yellow alert indicator button to view the alerts. A fault / alert screen will appear in the display.

Fault / alert text will appear under the icon in the center of the screen

The LCD will display a fault / alert code. If there is more than one fault, each fault code will alternately display.

Press right arrow button to scroll forward through the faults / alerts.

Press left arrow button to scroll back through the faults / alerts.

Press the home button to return to the main operating screen.

Press the back button to return to the previous screen.

OPERATION

Fault

Code

Number

|

Fault Code

Standard Panel

|

Fault Code

Pro−Panel

|

Causes(s)

|

Remedy

---|---|---|---|---

0x0010

|

Fault Parking Brake

|

Fault Parking Brake

|

Parking brake engaged

|

Release parking brake

0x0701

|

Fault ECH2O Flush Needed

|

Fault ECH2O Flush Needed

|

ec−H2O system plugged with impurities

|

Flush ec−H2O system

0x0781

|

Fault Detergent

Empty

|

Fault Detergent

Empty

|

Detergent tank is empty

|

Fill detergent tank

0x0790

|

Fault Solution Tank Empty

|

Fault Solution Tank Empty

|

Solution tank is empty

|

Fill solution tank

0x0791

|

Fault Recovery Tank Full

|

Fault Recovery Tank Full

|

Recovery tank is full

|

Empty recovery tank

0x07A0

|

Fault Filter Clogged

|

Fault Filter Clogged

|

Hydraulic filter clogged

|

Shut off machine.

Contact TENNANT service representative

0x07A1

|

Fault Hopper Fire

|

Fault Hopper Fire

|

Fire in the hopper

|

Shut off machine

Extinguish fire

If necessary, call emergency personnel

0x07A2

|

Fault Hopper Not

Home

|

Fault Hopper Not

Home

|

Hopper not completely

lowered

|

Lower hopper completely

0x07A3

|

Fault Shaker

Clogged

|

Fault Shaker

Clogged

|

Filter shaker is clogged

|

Remove and clean / or

replace hopper filter

0x07A4

|

Fault Seat Empty

|

Fault Seat Empty

|

Operator not in seat while engine is running

|

Operator must be in operator seat for machine to function

0x07B0

|

Fault Engine High

Temp

|

Fault Engine High

Temp

|

Engine overheating

|

Add coolant to coolant

system

0x07B1

|

Fault Hydraulic High Temp

|

Fault Hydraulic High Temp

|

Hydraulic fluid temperature is high

|

Shut off machine.

Contact TENNANT service representative

0x07B2

|

Fault Engine

Malfunction Indicator

|

Fault Engine

Malfunction Indicator

|

Engine malfunction

|

Shut off machine.

Contact TENNANT service representative

0x07B3

|

Fault Low Fuel

|

Fault Low Fuel

|

Fuel tank near empty

|

Fill fuel tank (gasoline)

Replace fuel tank (LPG)

0x07B4

|

Fault Engine Low Oil Pressure

|

Fault Engine Low Oil Pressure

|

Oil level possibly low

|

Add engine oil as needed

0x07B5

|

Fault Engine

Alternator Low

Voltage

|

Fault Engine

Alternator Low

Voltage

|

Inadequate voltage supply to engine

|

Shut off machine.

Contact TENNANT service representative

0x0601

|

Fault Pump Open

|

Fault Pump Open

|

Pump pressure limit switch tripped

|

Normal during pressure washer or spray pump

operation in low flow

condition. Could possibly be an indicator of a system issue

0x0640

|

Fault Pressure

Washer Safety

|

Fault Pressure

Washer Safety

|

Pressure washer control switch activated without parking brake engaged

|

Engage parking brake or turn off pressure washer control switch

0x0641

|

Fault Pressure

Washer Enabled

|

Fault Pressure

Washer Enabled

|

Pressure washer control switch activated

|

Normal operation indicator or turn off pressure washer control switch

0x0642

|

Fault Spray Wand

Safety

|

Fault Spray Wand

Safety

|

Spray wand control switch activated without parking brake engaged

|

Engage parking brake or turn off spray wand control switch

0x0643

|

Fault Spray Wand

Enabled

|

Fault Spray Wand

Enabled

|

Spray wand control switch activated

|

Normal operation indicator or turn off spray wand control switch

*NOTE: Contact a Tennant Service representative for all other fault codes.

M20 Diesel 9016060 (11−2023) 61

OPERATION

OPTIONS
SPRAY NOZZLE (OPTION)

The spray nozzle is used to clean the machine and surrounding areas. The solution tank provides a water/solution supply for the spray nozzle. A wand is included with the spray nozzle.

NOTE: Do NOT get water on electronic components when using the spray nozzle to clean the machine.

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, and turn off machine.

1. Turn the key to the on position (without starting the machine).

NOTE: The spray nozzle can be operated while the engine is running, but it is recommended to turn the engine off while using the spray nozzle.

2. Press the top of the Spray nozzle switch to turn on the water supply. The light on the switch will come on when the spray nozzle is activated.

** NOTE:** The optional spray nozzle and high pressure washer will display a series of fault codes during normal operation. See FAULTS/ALERTS section of this manual.

3. Remove the spray nozzle from the storage area and clean as required.

** FOR SAFETY:** When using pressurized air or water, wear eye protection.

4. If cleaning a hard to reach area, install the wand onto the spray nozzle.

5. Twist the off/on knob to turn on the wand.

6. When finished cleaning, place the spray nozzle and wand back into their storage locations.

7. Press the bottom of the Spray nozzle switch to turn off the water supply.

DETERGENT METERING (OPTION)

The Detergent Metering switch provides a continuous increased detergent flow for areas with extraordinary dirt or soil buildup. The detergent tank provides the detergent for the detergent metering switch.

Fill the detergent tank with proper detergent.

While scrubbing, press the top of the switch to increase detergent flow. Press the bottom of the switch for even more increased detergent flow. The light in the switch display which setting is activated.

** NOTE:** The switch can be configured to allow different flow rates. Contact a Tennant service representative to change the default flow rates.

M20 Diesel 9016060 (9−2022) 63

OPERATION

VACUUM WAND (OPTION)

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, turn off machine, and remove key.

1. Remove the vacuum wand nozzle and hose from the storage bag.

2. Attach the wand hose to the vacuum hose.

3. Assemble the wand and nozzle.

4. Start the machine.

5. Verify that the 1−STEP button is on.

6. Press the vacuum fan / squeegee button to turn on the vacuum fan.

7. Clean the spill or debris.

Standard Panel Pro−Panel

NOTE : The squeegee will lower.

WARNING: Engine 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.

8. When finished vacuuming, press the Scrub vacuum fan/squeegee button to turn off the vacuum. The light above the button will turn off.

9. Turn off the machine.

10. Disassemble the vacuum wand assembly and return it to the storage bag.

11. Reattach the vacuum hose to the hopper lift arm.

64 M20 Diesel 9016060 (09−2016)

OPERATION

HIGH PRESSURE WASHER (OPTION)

The high pressure washer is used for heavy duty cleaning. Do not use detergent in the solution tank when using the pressure washer or pressure washer damage could occur.

NOTE: Do NOT get water on electronic components when using the high pressure washer to clean the machine.

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, and turn off machine.

FOR SAFETY: When using pressurized air or water, wear eye and ear protection.

1. Turn off the machine and set the parking brake.

NOTE: The high pressure washer will not operate unless the parking brake is set.

2. Connect the hose to the high pressure washer system.

3. Connect the other end of the hose to the wand.

4. Adjust the nozzle on the wand to the desired setting.

Pull the nozzle out for the Low pressure setting, or push the nozzle in for the High pressure setting. Twist the nozzle for either the Stream or Fan setting.

5. Start the machine.

WARNING: Engine 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.

6. Verify that the 1−STEP Scrub button is off. Standard Panel Pro−Panel

7. Press the engine speed button to increase the engine RPM.

Standard Panel Pro−Panel

8. Press the top of the Pressure washer switch.

NOTE: The optional spray nozzle and high pressure washer will display a series of fault codes during normal operation. See

FAULTS/ALERTS section of this manual.

9. If necessary, adjust the pressure. Turn the knob clockwise to increase pressure and counterclockwise to decrease pressure.

NOTE: Adjust the pressure at the wand before adjusting it at the system.

10. Squeeze the trigger to begin cleaning. WARNING: Do not spray people or animals. Severe personal injury can result. Wear eye protection. Hold sprayer with two hands.

11. When finished cleaning, release the trigger.

12. Press the engine speed button to decrease the engine RPM.

13. Press the bottom of the Pressure washer switch to turn off the washer.

14. Point the high pressure wand in a safe direction and squeeze the trigger to relieve pressure from the system.

15. Turn off the machine.

16. Disassemble the hose and wand and return them to the proper storage locations.

66 M20 Diesel 9016060 (11−2023)

OPERATION

MACHINE TROUBLESHOOTING

Problem

|

Cause

|

Remedy

---|---|---

Trailing water−poor or no water pickup

|

Scrub vacuum fan turned off

|

Turn on vacuum fan

Worn squeegee blades

|

Rotate or replace squeegee blades

Squeegee out of adjustment

|

Adjust squeegee

No detergent in solution tank causing squeegee to chatter

|

Add detergent to solution tank

Vacuum hose clogged

|

Flush vacuum hoses

Vacuum screen dirty

|

Clean vacuum screen

Recovery tank cover seals worn

|

Replace seals

Debris caught in squeegee

|

Remove debris

Vacuum hose to squeegee or

recovery tank disconnected or damaged

|

Reconnect or replace vacuum hose

Recovery tank cover not completely closed

|

Check for obstructions and make sure cover is closed properly

Scrub vacuum fan will not turn on

|

Vacuum fan / squeegee button turned off

|

Turn on Vacuum fan / squeegee but ton

Recovery tank full

|

Drain recovery tank

Foam filling recovery tank

|

Empty recovery tank

Use less detergent/or use defoamer

Recovery tank sensor dirty or stuck

|

Clean or replace sensor

Little or no solution flow to the floor (Convention al Scrubbing Mode)

|

Solution tank empty

|

Fill solution tank

Solution flow turned off

|

Turn on solution flow

Solution supply lines plugged

|

Flush solution supply lines

Excessive dusting

|

Brush skirts and dust seals worn, damaged, or out of adjustment

|

Replace or adjust brush skirts and/or brush seals

Hopper dust filter clogged

|

Shake and/or replace dust filter

Sweep vacuum fan seal damaged

|

Replace vacuum fan seal

Sweep vacuum fan failure

|

Call Tennant service representative

Thermo−Sentry tripped

|

Allow Therm−Sentry to cool

Poor sweeping

performance

|

Worn brush bristles

|

Replace brushes

Brush pressure set too light

|

Increase brush pressure

Main brushes not properly adjusted

|

Adjust brushes

Debris caught in main brush drive mechanism

|

Remove debris from main brush drive mechanism

Main and/or side brush drive failure

|

Call Tennant service representative

Hopper is full

|

Empty hopper

Hopper lip skirts worn or damaged

|

Replace lip skirts

Improper main brushes

|

Call Tennant service representative

Poor scrubbing

performance

|

1−STEP Scrub button not on

|

Turn on 1−STEP Scrub button

Improper detergent or brushes

|

Call Tennant service representative

Solution tank empty

|

Fill solution tank

Debris caught on main brushes

|

Remove debris

M20 Diesel 9016060 (09−2016) 67

OPERATION  

Problem

|

Cause

|

Remedy

---|---|---

Poor scrubbing

performance

|

Worn main brushes

|

Replace brushes

Brush pressure set too light

|

Increase brush pressure

FaST System does not operate

|

FaST button is turned off

|

Turn on the FaST button

Clogged FaST−PAK supply hose and/or connector

|

Soak connector and hose in warm water and clean

FaST−PAK carton is empty or not connected

|

Replace FaST−PAK carton and/or connect supply hose

FaST system is not primed

|

To prime, operate the FaST solution system for a few minutes

Clogged filter screen

|

Drain solution tank, remove and clean filter screen

Blown fuse

|

Call Tennant service representative

Faulty solution pump

|

Call Tennant service representative

ES System does not operate

|

ES button is turned off

|

Turn on ES button

ES sensor in tank dirty

|

Clean sensor

Clogged ES pump filter

|

Clean ES filter

Water level in recovery tank too low

|

Fill recovery tank about half full

Water level in solution tank too low

|

Fill solution tank

Sweeping or Scrubbing functions do not turn on

|

Hopper is up

|

Completely lower hopper

Fire in the hopper

|

Shut off machine. Extinguish fire. If necessary, call emergency

personnel.

Recovery tank full

|

Press Scrub vacuum fan/ squeegee button for one minute of extended water pickup. Empty recovery tank. ES models: activate the ES system to prevent this.

68 M20 Diesel 9016060 (09−2016)

MAINTENANCE

MAINTENANCE

M20 Diesel 9016060 (9−2022) 69

MAINTENANCE

MAINTENANCE CHART

The table below indicates the Person Responsible for each procedure.

O = Operator.

T = Trained Personnel.

Interval

|

Person

Resp.

|

Key

|

Description

|

Procedure

|

Lubricant /Fluid

|

No. of

Service Points

---|---|---|---|---|---|---

Daily

|

O

|

1

|

Engine

|

Check oil level

|

EO

|

1

Check coolant level in

reservoir

|

WG

|

1

O

|

10

|

Hydraulic fluid reservoir

|

Check fluid level

|

HYDO

|

1

O

|

8, 9

|

Tank cover seals

|

Check for damage or wear

|

−

|

3

O

|

3

|

Main brushes

|

Check for damage and wear

|

−

|

2

O

|

4

|

Side brush (option)

|

Check for damage and wear

|

−

|

1

Check squeegee blade for damage and wear

|

−

|

1

O

|

6

|

Rear Squeegee Blade

|

Check for damage and wear

|

−

|

1

Check deflection

|

−

|

1

O

|

7

|

Side Squeegee Blades

|

Check for damage and wear

|

−

|

2

O

|

8

|

Recovery tank

|

Clean

|

−

|

1

O

|

8

|

Recovery tank, ES

mode (option)

|

Clean ES filter

|

−

|

1

O

|

9

|

Solution tank, ES mode (option)

|

Clean

|

−

|

1

O

|

5

|

Hopper

|

Clean hopper, debris screen, and hose

|

−

|

1

20

Hours

|

O

|

5

|

Hopper dust filter

|

Check for damage, clean, replace if necessary

|

−

|

1

50

Hours

|

O

|

16

|

FaST filter screen

|

Clean

|

−

|

1

O

|

16

|

ec−H2O filter screen (S/N 01000−U01499)

|

Clean

|

−

|

1

O

|

3

|

Main brushes

|

Rotate front to rear

|

−

|

2

T

|

3

|

Main brushes

|

Check brush pattern and adjust if needed

|

−

|

2

T

|

13

|

Front wheel

|

Torque wheel nuts

(after initial 50 hours only)

|

−

|

1

T

|

15

|

Battery

|

Clean and tighten battery cable connections

(after initial 50 hours only)

|

−

|

1

T

|

−

|

Fuel lines

|

Check for damage and wear and tighten loose clamp bands

|

−

|

All

T

|

1

|

Engine

|

Check belt tension

|

−

|

1

LUBRICANT/FLUID

EO Engine oil, 5W30 SAE …. −SM or higher.

HYDO . TennantTrue premium hydraulic fluid or equivalent

WG Water and ethylene glycol anti-freeze, … −34 C (−30 F)

SPL Special lubricant, Lubriplate EMB grease (Tennant part number 01433 … −1) NOTE: More frequent maintenance intervals may be required in extremely dusty conditions.

70 M20 Diesel 9016060 (9−2022)

MAINTENANCE

NOTE: More frequent maintenance intervals may be required in extremely dusty conditions.

The table below indicates the Person Responsible for each procedure.

O = Operator.
T = Trained Personnel.

Interval

|

Person Resp.

|

Key

|

Description

|

Procedure

|

Lubricant/ Fluid

|

No. of

Service Points

---|---|---|---|---|---|---

100

Hours

|

T

|

19

|

Radiator

|

Clean core exterior

|

−

|

1

T

|

19

|

Hydraulic cooler

|

Clean core exterior

|

−

|

1

T

|

1

|

Engine

|

Change oil and filter

|

EO

|

1

O

|

13, 20

|

Tires

|

Check for damage

|

−

|

3

T

|

6

|

Rear squeegee casters

|

Lubricate

|

SPL

|

2

T

|

6

|

Rear squeegee

|

Check leveling

|

−

|

1

O

|

2

|

Scrub head skirt

|

Check for damage or wear

|

−

|

1

200

Hours

|

T

|

12

|

Front wheel support

bearings

|

Lubricate

|

SPL

|

2

T

|

1, 17

|

Torque tube

|

Lubricate

|

SPL

|

4

T

|

12

|

Steering cylinder

|

Lubricate

|

SPL

|

1

T

|

1, 19

|

Radiator hoses and

clamps

|

Check for tightness and wear

|

−

|

2

T

|

11

|

Brake pedal

|

Check adjustment

|

−

|

1

T

|

14

|

Hopper lift arm pivots

|

Lubricate

|

SPL

|

2

T

|

5

|

Hopper door pivots

|

Lubricate

|

SPL

|

2

T

|

18

|

Hopper lift arm latch

|

Clean and lubricate

|

SPL

|

1

400

Hours

|

T

|

1

|

Engine

|

Replace air filter

|

−

|

1

Replace fuel filter

|

−

|

1

T

|

20

|

Rear wheel bearings

|

Check, lubricate, and adjust

|

SPL

|

2

800

Hours

|

T

|

10

|

Hydraulic reservoir

|

Replace strainer outlet

|

|

1

T

|

−

|

Hydraulic hoses

|

Check for wear and

damage

|

−

|

All

T

|

1, 19

|

Cooling system

|

Flush

|

WG

|

2

T

|

13

|

Propelling motor

|

Torque shaft nut

|

−

|

1

T

|

13

|

Front wheel

|

Torque wheel nuts

|

−

|

1

T

|

15

|

Battery

|

Clean and tighten battery cable connections

|

−

|

1

LUBRICANT/FLUID

EO Engine oil, 5W30 SAE …. −SG/SH only.

HYDO . TennantTrue premium hydraulic fluid or equivalent

WG Water and ethylene glycol anti-freeze, … −34 C (−30 F)

SPL Special lubricant, Lubriplate EMB grease (Tennant part number 01433 … −1) NOTE: More frequent maintenance intervals may be required in extremely dusty conditions.

M20 Diesel 9016060 (2−2020) 71

MAINTENANCE  

NOTE: More frequent maintenance intervals may be required in extremely dusty conditions.

The table below indicates the Person Responsible for each procedure.

O = Operator.

T = Trained Personnel.

Interval

|

Person

Resp.

|

Key

|

Description

|

Procedure

|

Lubricant/ Fluid

|

No. of

Service Points

---|---|---|---|---|---|---

1000

Hours

|

T

|

1, 19

|

Radiator hoses

|

Check for cracks or

deterioration

|

−

|

2

T

|

16

|

FaST system filters

|

Replace

|

−

|

2

1200

Hours

|

T

|

10

|

Hydraulic fluid filter

|

Replace fluid filter

|

−

|

1

2400

Hours

|

T

|

10

|

Hydraulic fluid reservoir

|

Replace strainer outlet

|

−

|

1

Change hydraulic fluid

|

HYDO

|

1

LUBRICANT/FLUID

EO Engine oil, 5W30 SAE …. −SG/SH only.

HYDO . TennantTrue premium hydraulic fluid or equivalent

WG Water and ethylene glycol anti-freeze, … −34 C (−30 F)

SPL Special lubricant, Lubriplate EMB grease (Tennant part number 01433 … −1) NOTE: More frequent maintenance intervals may be required in extremely dusty conditions.

72 M20 Diesel 9016060 (09−2016)

MAINTENANCE

YELLOW TOUCH POINTS

This machine features easy to find yellow touch points for simple service items. No tools are required to perform these maintenance operations.

LUBRICATION

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, turn off machine, and remove key.

ENGINE OIL

Check the engine oil level daily. Change the oil and oil filter after every 100 hours of operation.

Fill the engine with oil until the oil is between the indicator marks on the dipstick. DO NOT fill past the top indicator mark. The engine oil capacity is 6 L (6.35 qt) with oil filter.

SQUEEGEE CASTER BEARINGS

Lubricate the squeegee caster bearings after every 100 hours of operation.

FRONT WHEEL SUPPORT BEARING

Lubricate the front wheel support bearings after every 200 hours of operation. Both front wheel support grease fittings are located underneath the frame support plate.

STEERING CYLINDER BEARING

Lubricate the steering cylinder after every 200 hours of operation. The steering cylinder bearing is located next to the front wheel support.

M20 Diesel 9016060 (09−2016) 73

MAINTENANCE

REAR WHEEL BEARINGS

Inspect the rear wheel bearings for seal damage, and repack and adjust every 400 hours of operation. Use Lubriplate EMB grease (Tennant part number 01433−1).

HOPPER LIFT ARM PIVOTS

Lubricate the hopper lift arm pivots after every 200 hours of operation.

LIFT ARM LATCH

Clean and lubricate the lift arm latch and latch stop after every 200 hours of operation.

TORQUE TUBES

Lubricate the torque tubes after every 200 hours of operation. The torque tube grease fittings on the operator side of the machine are located beneath the fuel tank.

HOPPER DOOR PIVOTS

Lubricate the hopper door pivots after every 200 hours of operation.

On the other side of the machine the torque tube grease fittings are located beneath the propel pump.

74 M20 Diesel 9016060 (09−2016)

HYDRAULICS

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, turn off machine, and remove key.

Check the hydraulic fluid level at operating temperature daily. The hydraulic fluid level should be between the two lines on the hydraulic gauge. The hopper must be down when checking hydraulic fluid level.

ATTENTION! Do not overfill the hydraulic fluid reservoir or operate the machine with a low level of hydraulic fluid in the reservoir. Damage to the machine hydraulic system may result.

Drain and refill the hydraulic fluid reservoir with new TennantTrue premium hydraulic fluid after every 2400 hours of operation.

WARNING: Burn hazard. Hot surface. Do NOT touch.

Replace the filler cap after every 800 hours of operation. Apply a light film of hydraulic fluid onto the filler cap gasket before installing the cap onto the reservoir.

MAINTENANCE

Replace the hydraulic fluid filter after every 1200 hours of operation or if the hydraulic reservoir gauge is in the yellow/red zone when the reservoir hydraulic fluid is approximately 32 C (90 F).

Replace the hydraulic strainer outlet after every 2400 hours of operation.

M20 Diesel 9016060 (09−2016) 75

MAINTENANCE

HYDRAULIC FLUID

There are three fluids available for different ambient air temperature ranges:

TennantTrue premium

hydraulic fluid (Extended Life)

Part

Number

|

Capacity

|

ISO

Grade

Viscosity Index (VI)

|

Ambient Air Temperature Ranges

1057710

|

3.8 L

(1 gal)

|

ISO 100

VI 126 or higher

|

19 C

(65 F) or

higher

1057711

|

19 L

(5 gal)

99321

|

20 L

(5.3 gal)

|

ISO 68

VI 155 or higher

|

7 to 43 C

(45 to

110 F)

1057707

|

3.8 L

(1 gal)

|

ISO 32

VI 163 or higher

|

16 C

(60 F) or

lower

1057708

|

19 L

(5 gal)

If using a locally-available hydraulic fluid, be sure the specifications match Tennant hydraulic fluid specifications. Substitute fluids can cause premature failure of hydraulic components.

ATTENTION! Hydraulic components depend on system hydraulic fluid for internal lubrication. Malfunctions,

accelerated wear, and damage will result if dirt or other contaminants enter the hydraulic system.

HYDRAULIC HOSES

Check the hydraulic hoses after every 800 hours of operation for wear or damage.

FOR SAFETY: When servicing machine, use cardboard to locate leaking hydraulic fluid under pressure.

High pressure fluid escaping from a very small hole can almost be invisible, and can cause serious injuries.

00002

Consult a physician immediately if injury results from escaping hydraulic fluid. Serious infection or reaction can occur if proper medical treatment is not given immediately.

Contact a mechanic or supervisor if a leak is discovered.

76 M20 Diesel 9016060 (09−2016)

ENGINE

FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, turn off machine, and remove key.

COOLING SYSTEM

FOR SAFETY: When servicing machine, avoid contact with hot engine coolant. Do not remove cap from radiator when engine is hot. Allow engine to cool.

Check the coolant level in the reservoir daily. The coolant level must be between the indicator marks when the engine is cold. Refer to the coolant manufacture for water/coolant mixing instructions.

Flush the radiator and the cooling system after every 800 hours of operation.

The cooling system must be completely filled with coolant to keep the engine from overheating. When filling the cooling system, open the drain cock to bleed the air from the system.

MAINTENANCE

Check the radiator hoses and clamps after every 200 hours of operation. Tighten loose clamps. Replace damaged hoses and clamps.

Check the radiator hoses for cracks and deterioration after every 1000 hours of operation.

Check the radiator core exterior and hydraulic cooler fins for debris after every 100 hours of operation. Blow or rinse all dust through the grille and radiator fins, in the opposite direction of normal air flow. Be careful to not bend the cooling fins when cleaning. Clean thoroughly to prevent the fins from becoming encrusted with dust. To avoid cracking the radiator, allow the radiator and cooler fins to cool before cleaning.

M20 Diesel 9016060 (09−2016) 77

MAINTENANCE

AIR FILTER

Replace the air filter after every 400 hours of operation.

FUEL LINES

Check the fuel lines every 50 hours of operation. If the clamp band is loose, apply oil to the screw of the band and securely tighten the band.

FUEL FILTER

The fuel filter removed impurities from the fuel.

Replace the fuel filter after every 400 hours of operation.

The rubber fuel lines can become worn−out  whether the engine has been used much or not.

Replace the fuel lines and clamp bands every two years.

FOR SAFETY: When servicing machine, keep flames and sparks away from fuel system service area. Keep area well ventilated.

FOR SAFETY: When servicing machine, keep flames and sparks away from fuel system service area. Keep area well ventilated.

If the fuel lines and clamp bands are found worn or damaged before two years’ time; replace or repair them at once. Bleed the fuel system after replacement of any fuel lines, see PRIMING THE FUEL SYSTEM. When the fuel lines are not installed, plug both ends with clean cloth or paper to prevent dirt from entering the lines. Dirt in the lines can cause fuel injection pump malfunction.

78 M20 Diesel 9016060 (09−2016)

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