Tennant T20 LPG User manual

T20
*9016211*
(S/N 1000−)
Rider Scrubber
English EN
Operator Manual
9016211
Rev. 01 (2-2017)
(Gas / LPG)
The Safe Scrubbing AlternativeR
ESRExtended Scrub System
TennantTrueRParts
HygenicRFully Cleanable Tanks
FloorSmartRIntegrated Cleaning System
IRISRa Tennant Technology
Pro−PanelControls
Insta−FitAdapter
For the latest Parts manuals and other
language Operator manuals, visit:
www.tennantco.com/manuals
t

INTRODUCTION
This manual is furnished with each new model. It provides necessary operation and maintenance instructions.
Read this manual completely and understand
the machine before operating or servicing it.
This machine will provide excellent service. However, the best results will be obtained at minimum costs if:
SThe machine is operated with reasonable care.
SThe machine is maintained regularly - per the machine maintenance instructions provided.
SThe machine is maintained with manufacturer supplied or equivalent parts.
Model No. −
Serial No. −
Installation Date −
Please fill out at time of
installation for future reference.
MACHINE DATAPROTECT THE ENVIRONMENT
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.
INTENDED USE
The T20 is an industrial rider machine designed to 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. Do not use where excessive debris is present such as leaves,
paper, etc. 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 E2016, 2017 TENNANT Company, Printed in U.S.A.

CONTENTS
1
T20 Gas/LPG 9016211 (09−2016)
CONTENTS
Page
Important Safety Instructions 4...............
Operation 8...............................
Machine Components 8..................
Controls And Instruments 9...............
Standard Touch Panel 10..................
Pro−Panel Controls 11....................
Symbol Definitions 12.....................
Operation Of Controls −Standard Panel 15..
Fuel Indicator 15......................
Gasoline Machines 15.................
LPG Machines 15.....................
Hour Meter 15........................
Recovery Tank Full Indicator 15.........
Solution Tank Indicator 16..............
Contrast Control Button 16.............
Engine Speed Button 16................
1−STEP Button 17.....................
Side Scrub Brush Button (Option) 17.....
Vacuum Fan / Squeegee Button 17......
Main Scrub Brush Button 18............
Solution On / Off Button 18.............
Operation Of Controls −Pro−Panel 19......
Pro−ID Login Screen 19................
Machine Status Button 19..............
Changing The Default Button 20.........
1−STEP Button 21.....................
Scrubbing Main Brush Button 21........
Scrubbing Vacuum Fan /
Squeegee Button 21................
Scrubbing Side Brush Button
(Option) 22........................
Solution On / Off Buttons 22............
Engine Speed Button 22................
Zone Control Buttons 23...............
Rearview Camera Button 23............
Help Button 24........................
Video Help Button 26..................
Completing The Pro−Check
Pre−Operation Checklist 27..........
Operation Of Controls −All Machines 28....
Operating Lights 28....................
Hazard Light (Option) 28...............
Operator Seat 29......................
Seat Belts 29.........................
Steering Column Tilt Knob 29...........
Brake Pedal 30.......................
Parking Brake Pedal 30................
Directional Pedal 30...................
Squeegee Protectors (Option) 30........
How The Machine Works 31...............
Brush And Pad Information 32.............
While Operating The Machine 33...........
Page
Pre−Operation Checklist 34................
Changing The Lpg Tank 35................
Starting The Machine 36..................
Turning Off The Machine 36...............
Filling The Solution Tank 37................
Foam Scrubbing (FaST Mode) /
ec−H2O Scrubbing
(ec−H2O Mode) 37.................
Conventional Scrubbing Mode 37........
ES (Extended Scrub) Mode With
Auto−Fill 38........................
ES (Extended Scrub) Mode −
Manually Filling Tank 38.............
Setting Scrub Modes 39...................
Setting ec−H2O Mode 39...............
Setting FaST Mode 40.................
Setting ES (Extended Scrub) Mode 40...
Setting Brush Pressure 41.................
Setting Brush Pressure −
Standard Panel 41..................
Setting Brush Pressure −Pro−Panel 41..
Setting Solution Flow 42..................
ES (Extended Scrub) Solution Flow 42...
Setting Solution Flow −
Standard Panel 42..................
Setting Solution Flow −Pro−Panel 42....
Scrubbing −Standard Panel 43............
Scrubbing −Pro−Panel 44.................
Double Scrubbing 45.....................
Water Pickup Mode (No Scrubbing) 46......
Emptying And Cleaning The Debris Tray −
Cylindrical Scrub Heads Only 47........
Draining And Cleaning The
Recovery Tank 49.....................
Draining The Recovery Tank With The
Drain Hose 49........................
Draining The Recovery Tank With The
Drain Plug 50.........................
Draining And Cleaning The
Solution Tank 52......................
Faults / Alerts 54.........................
Fault / Alert Indicators −
Standard Panel 54..................
Fault / Alert Indicators −Pro−Panel 54...
Options 56..............................
Spray Nozzle (Option) 56...............
Vacuum Wand (Option) 57..............
Power Wand (Option) 58...............
High Pressure Washer (Option) 60.......
Machine Troubleshooting 62...............

CONTENTS
T20 Gas/LPG 9016211 (09−2016)
2
Page
Maintenance 64.............................
Maintenance Chart 65....................
Yellow Touch Points 68....................
Lubrication 68..........................
Engine Oil 68.........................
Squeegee Caster Bearings 68..........
Front Wheel Support Bearing 68.........
Steering Cylinder Bearing 68............
Rear Wheel Bearings 69...............
Torque Tubes−Cylindrical Brushes 69....
Torque Tubes−Disk Brushes 69.........
Pivot Shaft−Disk Brushes 69............
Hydraulics 70..........................
Hydraulic Fluid 71.....................
Hydraulic Hoses 71....................
Engine 72...............................
Cooling System 72....................
Air Filter 73..........................
Fuel Filter (LPG) 73....................
LPG Vaporizer 73.....................
Fuel Filter (Gasoline) 73................
Engine Belt 74........................
PCV System 74.......................
Spark Plugs −Mitsubishi Engines 74.....
Camshaft And Balance Shaft Belts −
Mitsubishi Engines 74...............
Battery 74...............................
Fuses And Relays 75.....................
Relay Panel Fuses And Relays 75.......
Engine Harness Fuses And Relays 76...
Optional Relays 76....................
Circuit Breakers (ec−H2O) 76...........
Scrub Brushes And Pads 76...............
Disk Brushes 76.......................
Replacing Disk Brushes Or
Pad Driver 77......................
Replacing Disk Pads 78................
Checking The Disk Scrub Head
Stop Bumpers 78...................
Cylindrical Brushes 79.................
Replacing Or Rotating Cylindrical
Brushes 79........................
Checking Cylindrical Brush Pattern 80....
Adjusting The Cylindrical
Brush Taper 81.....................
Adjusting The Cylindrical
Brush Width 81.....................
Side Brush (Option) 82....................
Replacing The Side Brush 82...........
Page
FaST System 83.........................
Replacing The FaST−PAK Carton 83.....
Cleaning The FaST Supply Hose
Connector 84......................
Cleaning The FaST System Filter
Screen 84.........................
Replacing The Fast System Filters 84....
ec−H2O Module Flush Procedure 85........
Cleaning The ec−H2O Filter Screen 86......
Squeegee Blades 87......................
Replacing (Or Rotating) The Rear
Squeegee Blades 87................
Replacing Or Rotating The Side
Squeegee Blades 89................
Replacing Or Adjusting The Side
Brush Squeegee Blade (Option) 91...
Leveling The Rear Squeegee 92.........
Adjusting The Rear Squeegee
Blade Deflection 93.................
Skirts And Seals 94.......................
Scrub Head Skirt 94...................
Recovery Tank Seal 94.................
Solution Tank Seals 94.................
Brakes And Tires 95......................
Brakes 95............................
Tires 95..............................
Front Wheel 95.......................
Propelling Motor 95.......................
Pushing, Towing, And Transporting
The Machine 96.......................
Pushing Or Towing The Machine 96......
Transporting The Machine 96...........
Machine Jacking 98......................
Storage Information 98....................
Freeze Protection (Machines Without
ec−H2O System) 99................
Freeze Protection (Machines With
ec−H2O System) 99................
Priming The ec−H2O System 101.......
Specifications 102...........................
General Machine Dimensions/Capacities 102
General Machine Performance 102.........
Hydraulic System 103.....................
Braking System 103......................
Tires 103................................
Steering 103.............................
FaST System 104........................
ec−H2O System 104......................
Machine Dimensions 104..................

CONTENTS
3
T20 Gas/LPG 9016211 (09−2016)
Page
Supervisor Controls 105......................
Pro−Panel Supervisor Controls 105.........
Entering The Supervisor Mode −
First Time Use Only 105................
Entering The Supervisor Mode 106.........
Supervisor Setting Screen /
Screen Icons 107......................
Adding / Editing Profiles 108...............
Enabling The Login 110...................
Disabling The Login 111...................
Calibrating The Touch 111.................
Exporting Checklists 112..................
Checklist Setup 113......................
Disabling / Enabling The Pre−Operation
Checklist 114.........................
Changing The Rear View Camera
Settings 115.........................
Programming The Zone Control Buttons 115.
Setting / Changing The Date And Time 117..

SAFETY PRECAUTIONS
T20 Gas/LPG 9016211 (09−2016)
4
IMPORTANT SAFETY INSTRUCTIONS −SAVE THESE INSTRUCTIONS
The following precautions are used throughout
this manual as indicated in their description:
WARNING: To warn of hazards or unsafe
practices that could result in severe
personal injury or death.
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: Burn hazard. Hot surface. Do
NOT touch.
CAUTION: LPG engine will run for a few
seconds after key is turned off. Apply
parking brake before leaving machine.
WARNING: Do not spray people or
animals. Severe personal injury can
result. Wear eye protection. Hold
sprayer with two hands.
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 for fuel, oil, and liquid leaks.
−Keep sparks and open flame away
from refueling area.
−Make sure all safety devices are in
place and operate properly.
−Check brakes and steering for proper
operation.
−Adjust seat and fasten seat belt.
3. When starting machine:
−Keep foot on brake and directional
pedal in neutral.

SAFETY PRECAUTIONS
5
T20 Gas/LPG 9016211 (09−2016)
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.
−Keep children and unauthorized
persons away from machine.
−Do not carry passengers on machine.
−Always follow safety and traffic rules.
−Report machine damage or faulty
operation immediately.
−Follow mixing, handling and disposal
instructions on chemical containers.
−Follow safety guidlines 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.
7. When loading/unloading machine
onto/off truck or trailer:
−Drain tanks before loading machine.
−Lower scrub head and squeegee
before tying down machine.
−Turn off machine and remove key.
−Use ramp, truck or trailer that will
support the weight of the machine and
operator.
−Do not load/unload on ramp inclines
that exceed 18% grade.
−Use winch. Do not drive the machine
onto/off the truck or trailer unless the
load height is 380 mm (15 in) or less
from the ground.
−Set parking brake after machine is
loaded.
−Block machine tires.
−Tie machine down to truck or trailer.

SAFETY PRECAUTIONS
T20 Gas/LPG 9016211 (09−2016)
6
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.
10783
Located on the side
of the operator
compartment.
Located on the side
of the operator
compartment.
Located next to the ignition switch on
the instrument panel. (LPG machines
only)
WARNING LABEL −Machine emits
toxic gases. Serious injury or death
can result. Provide adequate
ventilation.
Located on the side of the operator
compartment.
FOR SAFETY LABEL −
Read manual before
operating machine.
CAUTION LABEL −LPG engine will
run for a few seconds after key is
turned off. Apply parking brake before
leaving machine.
WARNING LABEL −
Flammable materials
or reactive metals
can cause explosion.
Do not pick up.
Located on the side
of the operator
compartment.
WARNING LABEL −
Machine can emit
excessive noise. Hearing
loss can result. Wear
hearing protection.

SAFETY PRECAUTIONS
7
T20 Gas/LPG 9016211 (09−2016)
Located on engine
compartment panel.
10783
Located next to the solution tank
covers and on the detergent tank.
Located on the side of the
bumper, on the exhaust shield,
on the hydraulic reservoir, and
on the scrub head (disk head
machines only).
WARNING LABEL −
Moving belt and fan.
Stay away.
WARNING LABEL −Flammable
materials can cause explosion or fire.
Do not use flammable materials in tank.
WARNING LABEL −
Burn hazard. Hot
surface. Do not touch.

OPERATION
8T20 Gas/LPG 9016211 (09−2016)
OPERATION
MACHINE COMPONENTS
S
R
T
U
P
V
Q
W
C
G
F
K
B
A
E
D
L
I
M
H
N
J
O
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. Debris tray carriage release lever
I. Fuel tank
J. Seat shroud
K. FaST carton, or ES detergent tank
compartment (option), or ec−H2O System
Module compartment (option)
L. Solution tank cover
M. Operator seat
N. Spray wand −nozzle behind seat (option)
O. Flashing light (option)
P. Audible backup alarm (option)
Q. Recovery tank drain hose
R. Recovery tank cover
S. Solution tank drain hose
T. Debris tray carriage
U. Taillights
V. Rear squeegee
W. Engine cover

OPERATION
9
T20 Gas/LPG 9016211 (09−2016)
CONTROLS AND INSTRUMENTS
A
B
C
G
D
F
E
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. Steering column tilt knob
G. Ignition switch

OPERATION
10 T20 Gas/LPG 9016211 (09−2016)
STANDARD TOUCH PANEL
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
QQ
R
S
T
U
A. Horn
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)
N. Scrubbing main brush button
O. Scrubbing vacuum fan / squeegee button
P. Scrubbing side brush (Option)
Q. Solution on / off buttons
R. Solution flow decrease button (−)
S. Solution flow indicator lights
T. Solution flow increase button (+)
U. USB port (Service only)

OPERATION
11
T20 Gas/LPG 9016211 (09−2016)
PRO−PANEL CONTROLS
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
SS
T
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. Rearview camera button
I. Solution control access button
J. Scrubbing main brush button
K. Scrubbing vacuum fan / squeegee button
L. Scrubbing side brush (Option)
M. 1−STEP button
N. Video help
O. Zone control 1 button
P. Zone control 2 button
Q. Zone control 3 button
R. Zone control 4 button
S. Solution on / off buttons
T. USB ports (Service only)

OPERATION
12 T20 Gas/LPG 9016211 (09−2016)
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) Unleaded fuel only
Scrub mode Spray nozzle (Option)
Operating lights / Hazard light Hour meter
Headlights Scrubbing main brush
Scrubbing side brush Scrubbing vacuum fan / squeegee
Contrast control Jack point
Engine speed control

OPERATION
13
T20 Gas/LPG 9016211 (09−2016)
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
Control help Video help
About Video button
Backspace Video list button
Rearview camera Home (main operating screen)

OPERATION
14 T20 Gas/LPG 9016211 (09−2016)
Pro−Panel Symbols
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

OPERATION
15
T20 Gas/LPG 9016211 (09−2016)
OPERATION OF CONTROLS −STANDARD
PANEL
FUEL INDICATOR
GASOLINE MACHINES
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.
NOTE: Do not use leaded fuels. Leaded fuels will
permanently damage the system oxygen sensor
and catalytic converter.
LPG MACHINES
For LPG machines, the Fuel indicator does NOT
display the amount of fuel in the LPG tank.When
the LPG tank is near empty, the fault indicator will
flash and a low fuel message will appear.
The LPG fuel gauge on the tank displays the
amount of fuel in the LPG tank.
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.

OPERATION
16 T20 Gas/LPG 9016211 (09−2016)
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.
ENGINE SPEED BUTTON
The engine speed is controlled automatically
when the 1−STEP button is pressed. When not
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.

OPERATION
17
T20 Gas/LPG 9016211 (09−2016)
1−STEP BUTTON
Press the 1−STEP button to activate all selected
scrubbing functions. Prior to the 1−STEP button
being pushed, the lights above all the selected
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 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.
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.
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.

OPERATION
18 T20 Gas/LPG 9016211 (09−2016)
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.
SOLUTION ON / OFF BUTTON
The solution flow is designed to stay on whenever
the scrub brushes are on. It can be turned off for
10 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 10 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.