Tennant T7 Operating and installation instructions

T7
*331045*
www.tennantco.com
Rider--Scrubber
Service Information Manual
331045
Rev. 01 (09-2008)
North America / International
Hygenic Fully Cleanable Tanks
R
The Safe Scrubbing AlternativeR

B
A
FOR REPLACEMENT PARTS
Identify machine model and serial number.
1. (A) Identify the machine model.
2. (B) Identify the machine serial number from the data plate.
Refer to the TENNANT Parts Manual.
NOTE: Only use TENNANT Company supplied or equivalent parts. Parts and supplies may be ordered
online, by phone, by fax or by mail.
Tennant Company
PO Box 1452
Minneapolis, MN 55440
Phone: [phone] or (763) 513--2850
www.tennantco.com
FaST--PAK is a US registered and unregistered trademark of Tennant Company.
Specifications and parts are subject to change without notice.
Copyright E2004 -- 2008 TENNANT Company, Printed in U.S.A.

T7 SERVICE INFORMATION Table of Contents
T7 331045 (9--08) iii
Safety Precautions ............................................................... iv Electrical Troubleshooting Information (continued)
General Machine Information ............................................... 1 Tank Level Switches ...............................................
.
50
Component Locator (Page 1 of 5) ................................. 2 Horn & Hour Meter Systems ...................................
.
51
Specifications ................................................................
.
7 Propel Forward System ........................................... 52
Dimensions/Capacities ............................................ 7 Propel Reverse System ........................................... 53
Machine Performance .............................................
.
7 Braking System .......................................................
.
54
Power Type .............................................................
.
8 Scrub Head & Squeegee Actuator Systems ...........
.
55
Tires ........................................................................
.
8 Scrub Brush Motors System .................................... 57
FaST System ........................................................... 8 Vacuum Fan System ............................................... 58
Dimensions .............................................................. 9 FaST System ........................................................... 59
Maintenance & Repair ................................................... 11 Conventional Solution System ................................
.
60
Maintenance Points ................................................. 12 LED Locations & Descriptions ................................. 61
Maintenance Chart .................................................. 13 Operational Modes & Interlocks ..............................
.
62
Batteries ..................................................................
.
14 Diagnostic & Fault Alarms ....................................... 63
Gel Batteries ..................................................... 14 High Current Faults ...........................................
.
63
Lead Acid Batteries ..........................................
.
14 Alarm Codes ...................................................... 63
Charging - Off-Board Charger .......................... 15 Diagnostic & Configuration Modes .......................... 64
Settings - On-Board Charger ............................ 16 Display Software Revision Mode ............................. 65
Charging - On-Board Charger .......................... 17 Self Test Mode ........................................................
.
66
On-Board Charger Error Codes .......................
.
17 Input Display Mode .................................................. 67
Electric Motors ......................................................... 18 Manual Mode ........................................................... 68
Belts (Cylindrical Models) ........................................ 18 Propel / Brake Diagnostics ...................................... 69
Scrub Brushes & Pads ............................................
.
19 Propelling System Data ..................................... 69
Disk Brushes ....................................................
.
19 Propel & Brake Pedal Data ...............................
.
69
Cylindrical Brushes ........................................... 21 Battery Select Mode & Voltage Levels .................... 70
Replacing FaST-PAK ..............................................
.
25 Battery Select Mode .......................................... 70
Squeegee Blades .................................................... 26 Voltage Levels ................................................... 70
Replacing Rear Squeegee Blades ...................
.
26 Reverse Alarm & Propel Speed Select Modes ........ 71
Replacing Side Squeegee Blades .................... 28 Reverse Alarm Select Mode .............................. 71
Adjusting Squeegee Guide Roller ....................
.
28 Propel Speed Select Mode ................................ 71
Leveling Rear Squeegee .................................. 28 Inputs & Outputs Table ............................................ 72
Adjusting Rear Squeegee Deflection ...............
.
29 Amer Drive Motor ........................................................... 73
Skirts & Seals .......................................................... 30 Drive Motor Exploded View ..................................... 74
Disk Head Floor Skirt .......................................
.
30 Performance Specifications ..................................... 74
Recovery Tank Seal ......................................... 30 Commutator Brush Replacement ............................ 75
Solution Tank Seals .........................................
.
30 Contact Ring Carbon Brush Access ........................ 75
Tires ........................................................................
.
30 Contact Ring Carbon Brushes ................................. 76
Pushing, Towing, & Transporting ............................
.
31 Brake Solenoid ........................................................ 76
Machine Jacking ...................................................... 32 Brake Rotor .............................................................
.
77
Storage Information ................................................. 32 Drive Motor Disassembly & Repair .........................
.
78
Machine Troubleshooting ........................................ 33
Electrical Troubleshooting Information ................................. 35
Commonly Used Electrical Symbols & Terms ............... 36
Electrical Schematic ...................................................... 38
Wire Harness Group (Page 1 of 7)................................. 40
Key OFF, Operator NOT on Seat .................................. 47
Key OFF, Battery Charger Plugged In ........................... 48
Key ON, Operator on Seat ............................................
.
49

T7 SERVICE INFORMATION
T7 331045 (9--08)
iv
SAFETY PRECAUTIONS
The following symbols are used throughout this
manual as indicated in the descriptions:
WARNING: To warn of hazards or
unsafe practices that could result in
severe personal injury or death.
FOR SAFETY: To identify actions that
must be followed for safe operation of
equipment.
This machine is designed solely for cleaning
smooth flooring in an indoor environment. Tennant
does not recommend using this machine in any
other environment.
The following information signals potentially
dangerous conditions to the operator or
equipment. Read this manual carefully. Know
when these conditions can exist. Locate all safety
devices on the machine. Then, take necessary
steps to train machine operating personnel.
Report machine damage or faulty operation
immediately. Do not use the machine if it is not in
proper operating condition.
WARNING: Batteries emit hydrogen gas.
Explosion or fire can result. Keep
sparks and open flame away. Keep
covers open when charging.
WARNING: Flammable materials can
cause an explosion or fire. Do not use
flammable materials in tank(s).
WARNING: Flammable materials or
reactive metals can cause an explosion
or fire. Do not pick up.
FOR SAFETY:
1. Do not operate machine:
-- Unless trained and authorized.
-- With brake disabled.
-- Unless operation manual is read and
understood.
-- In flammable or explosive areas.
-- In areas with possible falling objects.
2. Before starting machine:
-- Make sure all safety devices are in
place and operate properly.
-- Check brakes and steering for proper
operation.
3. When using machine:
-- Go slow on inclines and slippery
surfaces.
-- Use care when backing machine.
-- Report machine damage or faulty
operation immediately.
-- Follow mixing and handling
instructions on chemical containers.
4. Before leaving or servicing machine:
-- Stop on level surface.
-- Turn off machine and remove key.
5. When servicing machine:
-- Do not push or tow the machine on
inclines with the brake disabled.
-- Avoid moving parts. Do not wear loose
jackets, shirts, or sleeves when
working on machine.
-- Block machine tires before jacking
machine up.
-- Jack machine up at designated
locations only. Block machine up with
jack stands.
-- Use hoist or jack that will support the
weight of the machine.
-- Wear eye and ear protection when
using pressurized air or water.
-- Wear protective gloves when handling
batteries or battery cables.
-- Disconnect battery connections before
working on machine.
-- Avoid contact with battery acid.
-- Do not power spray or hose off
machine. Electrical malfunction may
occur.
-- Use Tennant supplied or equivalent
replacement parts.
6. When loading/unloading machine
onto/off truck or trailer:
-- Drain tanks before loading machine.
-- Turn off machine.
-- Use truck or trailer that will support
the weight of the machine.
-- Block machine tires.
-- Lower scrub head and squeegee
before tying down machine.
-- Tie machine down to truck or trailer.
Safety Precautions

T7 SERVICE INFORMATION General Machine Information
T7 331045 (9--08) 1
GENERAL
MACHINE
INFORMATION
BEFORE CONDUCTING TESTS:
* Read and Follow ALL Safety Warnings and Precautions as mentioned
at the beginning of this manual
* Always unhook Battery when removing or replacing components
DURING TESTS:
* Call Technical Services if Diagnostic Time Exceeds One Hour With
Unknown Cause or Course of Action
NOTE: Troubleshooting charts may be shown with optional equipment. The optional equipment
may not be specified in these charts. Some machines may not be equipped with all components
shown.
G

General Machine Information T7 SERVICE INFORMATION
T7 331045 (9--08)
2
.
Solution tank
empty indicator
Recovery tank
full indicator
Battery charge
level indicators
Fault
indicator
FaST ON/OFF
button
Increase Brush
Pressure button
Increase Solution
Flow button
Vacuum Fan ON/OFF
& Squeegee
Raise/Lower button
Decrease Brush
Pressure button
Decrease Solution
Flow button
Component Locator
SW6 Forward/
Reverse switch
S1 Emergency stop
button (E-stop)
KEYSWITCH1
ON/OFF key switch
Operator Panel Details
(Page 1 of 5)
S2 Horn
button
One Step
Scrub button
G

T7 SERVICE INFORMATION General Machine Information
T7 331045 (9--08) 3
.
Batteries
Shown with seat and battery shroud removed
Component Locator
(Page 2 of 5)
MTR6 Scrub
Head Actuator
M1 Main
Contactor
CB2 15A
Circuit Breaker
Standoff 2
F1 100A
Fuse
H1 Hour
Meter
U4 Control
Board (See Next
Page for Details)
CB1 5A Circuit
Breaker
Standoff 1
Charger Plug &
SW1 Charger
Interlock Switch
D1 & D3 Diodes
(below breakers)
Electrical Panel Details
G

General Machine Information T7 SERVICE INFORMATION
T7 331045 (9--08)
4
.
U4 Control Board
Main Plug
Connector -
Inputs and Low
Power Outputs
Ribbon Cable
Connector -
To Touch Panel
Control Board
Fuse – 15 Amp
(Slow Blow)
Battery
Negative
Connection
Battery Positive
Connection from
STANDOFF2
Output to Vacuum
Fan Motor
Output to
Propel Motor
Output to Scrub
Brush Motors
Control Board Details
Component Locator
(Page 3 of 5)
G

T7 SERVICE INFORMATION General Machine Information
T7 331045 (9--08) 5
.
SW3 Recovery Tank
Full Switch
Component Locator
(Page 4 of 5)
Rear Machine Area Details
SHOWN WITH REAR COVER REMOVED
MTR4 Vacuum
Fan Motor
SW4 Solution Tank
Empty Switch
G

General Machine Information T7 SERVICE INFORMATION
T7 331045 (9--08)
6
.
MTR1B Parking
Brake Solenoid
MTR1A
Propel Motor
Assembly
MTR7 FaST
Pump
Component Locator
(Page 5 of 5)
MTR2 Left
Brush Motor
U2 Throttle/
Brake Sensor
SHOWN WITH STEERING
COLUMN COVER REMOVED
UNDERSIDE VIEW
MTR3 Right
Brush Motor
MTR2 Left
Brush Motor
MTR3 Right
Brush Motor
Propel
Pedal
Brake
Pedal
GG

T7 SERVICE INFORMATION General Machine Information
T7 331045 (9--08) 7
.
SPECIFICATIONS
GENERAL MACHINE DIMENSIONS/CAPACITIES
Item Disk
650 mm
(26 in)
Cylinderical
700 mm
(28 in)
Disk
800 mm
(32 in)
Cylinderical 800
mm
(32 in)
Length 1520 mm (60 in)
Height 1270 mm (50 in)
Width / frame 740 mm (29 in) 810 mm (31.7 in) 740 mm (29 in) 810 mm (31.7 in)
Width / machine with
scrub head
800 mm (31.5 in) 830 mm (32.5 in) 910 mm (36 in) 930 mm (36.5 in)
Width / rear squeegee
(roller to roller)
850 mm
(33.25 in)
850 mm
(33.25 in)
1000 mm
(39.25 in)
1000 mm
(39.25 in)
Brush diameter 330 mm (13 in) 150 mm (6 in) 410 mm (16 in) 150 mm (6 in)
Brush length -- 700 mm (28 in) -- 800 mm (32 in)
Scrubbing path width 650 mm (26 in) 700 mm (28 in) 800 mm (32 in) 800 mm (32 in)
Solution tank capacity 110 L (29 gallons)
Recovery tank capacity 110 L (29 gallons)
Weight/net less batteries 265 Kg (585 lbs) 287 kg (632 lbs) 265 Kg (585 lbs) 296 kg (653 lbs)
Weight/with standard
battery package
386 Kg (850 lbs) 407 kg (897 lbs) 386 Kg (850 lbs) 416 kg (918 lbs)
Weight/with heavy duty
battery package
443 Kg (975 lbs) 464 kg (1022 lbs) 443 Kg (975 lbs) 473 kg (1043 lbs)
GVWR 675 Kg (1485 lbs)
Operating Sound Level
At Operator Ear 67 dB(A) 69 dB(A) 67 dB(A) 69 dB(A)
Vibration level at steering
wheel 0.2 m/s@
GENERAL MACHINE PERFORMANCE
Item Measure
Aisle turnaround width for 650 mm (26 in) scrub head 1730 mm (68.5 in)
Aisle turnaround width for 800 mm (32 in) scrub head 1840 mm (72.5 in)
Travel Speed (maximum) 6.4Km/h(4mph)
Maximum rated climb and descent angle with full tanks 6_/10.5%
Maximum rated climb and descent angle with empty tanks 11_/19.25%
Maximum rated climb and descent angle when scrubbing 4_/7%
G

General Machine Information T7 SERVICE INFORMATION
T7 331045 (9--08)
8
.
POWER TYPE
Type Quantity Volts Ah Rating Weight (Each)
Batteries (standard lead acid) 4 6 235 @ 20 hr rate 30.0 kg (66 lb)
Batteries (heavy duty aead acid) 4 6 335 @ 20 hr rate 44.5 kg (97.5 lb)
Batteries (Gel) 4 6 180 @ 20 hr rate 30.0 kg (66 lb)
Batteries (heavy duty Gel) 4 6 220 @ 20 hr rate 30.0 kg (66 lb)
Type Use VDC kW (hp)
Electric Motors Scrub brush (Disk) 24 0.45 kW (0.6 hp)
Scrub brush (Cylinderical) 24 0.50 kW (0.75 hp)
Vacuum fan 24 0.45 kW (0.6 hp)
Propelling 24 0.85 kW (1.1 hp)
Type VDC amp Hz Phase VAC
Chargers (Smart) 24 20 60 1120
24 25 60 1120
Chargers (Gel/Agm) 24 20 60? 1120
24 20 50 / 60 1240
Chargers (On--Board) 24 25 50 / 60 1115
TIRES
Location Type Size
Front (1) Solid 90 mm wide x 260 mm OD (3.5 in wide x 10 in OD)
Rear (2) Solid 80 mm wide x 260 mm OD (3.0 in wide x 10 in OD)
FaST SYSTEM (OPTION)
Item Measure
Solution pump 24 Volt DC, 5A, 5.7 LPM (1.5 GPM) open flow,
70 psi bypass setting
Solution flow rate 1.1LPM(0.30GPM)
Detergent to water dilution ratio 1:1000
Detergent flow rate 1.35 CC/Minute (0.046 Ounces/Minute)
G

T7 SERVICE INFORMATION General Machine Information
T7 331045 (9--08) 9
.
Frame (Cyl)
810 mm (31.7 in)
1270 mm
(50 in)
1520 mm
(60 in)
For 650 mm (26 in) and 700 mm (28 in) squeegee
800 mm (33.25 in)
For 800 mm (32 in) squeegee
1000 mm (39.25 in)
Frame (Disk)
740 mm (29 in)
MACHINE DIMENSIONS
G

T7 SERVICE INFORMATION
T7 331045 (9--08)
10
.

T7 SERVICE INFORMATION Maintenance
T7 331045 (9--08) 11
.
MAINTENANCE
& REPAIR
BEFORE CONDUCTING TESTS:
* Read and Follow ALL Safety Warnings and Precautions as mentioned
at the beginning of this manual
* Always unhook Battery when removing or replacing electrical
components
DURING TESTS:
* Call Technical Services if Diagnostic Time Exceeds One Hour With
Unknown Cause or Course of Action
NOTE: Troubleshooting charts may be shown with optional equipment. The optional equipment
may not be specified in these charts. Some machines may not be equipped with all components
shown.
M

Maintenance T7 SERVICE INFORMATION
T7 331045 (9--08)
12
.
1
1
2
8
3
9
11
5
4
3
6
3
10
7
10
3
12
13
14
355033
MAINTENANCE POINTS
M

T7 SERVICE INFORMATION Maintenance
T7 331045 (9--08) 13
.
MAINTENANCE CHART
Interval Key Description Procedure
Lubricant/
Fluid
No. of
Service
Points
Daily 1Side and rear squeegees Check for damage and wear -- 3
Check deflection and leveling -- 6
2Scrub brushes / pads Check for damage, wear, debris -- 2
8Recovery tank Clean tank, screen filter, and float
sensor
-- 1
9Vacuum fan filter Clean -- 1
7FaST--PAK supply hose
and connector (option)
Clean and connect hose to stor-
ing plug when not in use
-- 1
12 Debris tray
(Cylindrical brushes)
Clean -- 1
50 Hours 4Battery cells
(Lead acid batteries)
Check electrolyte level DW 3
11 Disk scrub head floor skirt Check for damage and wear -- 2
13 Cylindrical brushes Check taper and rotate front to
rear
-- 2
100 Hours 3Vacuum Fan and tank
seals
Check for damage and wear -- 3
14 Cylindrical brush drive
belts
Check tension -- 2
200 Hours 4Battery terminals and
cables
Check and clean -- 12
500 Hours 9Vacuum fan motor(s) Check motor brushes -- 1
5Scrub brush motors Check motor brushes -- 2
6Propelling motor Check motor brushes -- 1
10 Tires Check for damage and wear -- 3
LUBRICANT/FLUID
DW Distilled water....
M

Maintenance T7 SERVICE INFORMATION
T7 331045 (9--08)
14
.
BATTERIES
The batteries are designed to hold their power for
long periods of time. The lifetime of the batteries
is limited to number of charges the batteries
receive. To get the most life from the batteries,
recharge them immediately when the battery
discharge indicator begins to blink.
FOR SAFETY: When servicing machine, wear
protective gloves when handling batteries or
battery cables. Avoid contact with battery
acid.
After every 200 hours of use check for loose
battery connections and clean the surface of the
batteries, including terminals and cable clamps,
using a strong solution of baking soda and water.
Brush the solution sparingly over the battery tops.
Do not allow any baking soda solution to enter the
batteries. Use a wire brush to clean the terminal
posts and the cable connectors. Wipe off all
cleaning solution residue. After cleaning, apply a
coating of clear battery post protectant to the
terminals and the cable connectors. Keep the tops
of the batteries clean and dry.
Objects made of metal can potentially short circuit
the batteries. Keep all metallic objects off the
batteries. Replace any worn or damaged wires.
Replace any defective batteries. To dispose of
batteries, contact a battery dealer or your Tennant
Service representative.
GEL BATTERIES
The Gel batteries are maintenance free and do
not need to have the electrolyte level checked.
LEAD ACID BATTERIES
Check the electrolyte level in each battery cell
before and after charging, and after every 50
hours of operation. Never add acid to the
batteries. Add distilled water only. Always keep
the battery caps on, except when adding water or
taking hydrometer readings.
Using a hydrometer, measure the specific gravity
to determine the charge level and condition of the
batteries. If one or more of the battery cells test
lower than the other battery cells (0.050 or more),
the cell is damaged, shorted, or is near failure.
Completely recharge the batteries and then retest.
0438
0
M

T7 SERVICE INFORMATION Maintenance
T7 331045 (9--08) 15
.
NOTE: Do not take readings immediately after
adding distilled water. If the water and acid are not
thoroughly mixed, the readings may not be
accurate. Check the hydrometer readings against
the following chart to determine the remaining
battery charge level:
SPECIFIC GRAVITY
at 27_C(80_F)
BATTERY
CHARGE
1.265 100% Charged
1.223 75% Charged
1.185 50% Charged
1.148 25% Charged
1.110 Discharged
NOTE: If the readings are taken when the battery
electrolyte is any temperature other than 27_C
(80_F), the reading must be temperature
corrected. Add or subtract to the specific gravity
reading 0.004, 4 points, for each 6_C(10_F)
above or below 27_C(80_F).
CHARGING THE BATTERIES WITH
OFF--BOARD CHARGER
1. Drive the machine to a flat, dry surface.
NOTE: Make sure the area is well ventilated.
2. Turn the machine ON/OFF key switch off.
FOR SAFETY: Before leaving or servicing
machine, stop on level surface, and turn off
machine.
3. Tilt the operator seat forward and hook the
seat latch into place to hold up the seat
4. Lead acid batteries: Check the water level in
all battery cells. If the level is low, add just
enough distilled water to cover the plates. DO
NOT OVERFILL. The batteries can overflow
during charging due to expansion.
NOTE: Make sure the battery caps are in place
while charging.
FOR SAFETY: When servicing machine, wear
protective gloves when handling batteries or
battery cables. Avoid contact with battery
acid.
5. Plug the charger connector into the machine
battery charging connector.
WARNING: Batteries emit hydrogen gas.
Explosion or fire can result. Keep
sparks and open flame away. Keep
covers open when charging.
M

Maintenance T7 SERVICE INFORMATION
T7 331045 (9--08)
16
.
6. Plug the battery charger into the wall outlet.
NOTE: If the red “ABNORMAL CYCLE” lamp
lights when the TENNANT charger is plugged into
a wall outlet, the charger cannot charge the
battery and there is something wrong with the
battery.
07224
7. The TENNANT charger will start
automatically. When the batteries are fully
charged, the TENNANT charger will
automatically turn off.
NOTE: Do not disconnect he charger’s DC cord
from the machine’s battery charging connector
when the charger is operating. Arcing may result.
If the charger must be interrupted during charging,
disconnect the AC power supply cord first.
8. After the charger has turned off, unplug the
charger from the machine battery charging
connector.
9. Lead acid batteries: Check the electrolyte
level in each battery cell after charging. If
needed, add distilled water to raise the
electrolyte level to about 12 mm (0.4 in) below
the bottom of the sight tubes.
10. Unhook the seat latch and lower the operator
seat.
CHECKING ON--BOARD BATTERY CHARGER
SETTINGS
If your machine is equipped with the on--board
charger, the charger settings must be set for your
battery type before charging. Failure to properly
set will result in battery damage.
To determine your battery type, see battery label.
Contact your battery supplier if not specified.
To verify the setting of the charger, connect the
charger cord into an electrical receptacle. The
charger will display a sequence of codes. One of
the codes will either read “GEL” or “Acd”.
GEL = Set for sealed/maintenance free batteries.
Acd = Set for wet/lead acid batteries.
To change the settings to use a different type of
battery, contact your Tennant Service
representative.
M