Tennant T20 LPG Operating and installation instructions

www.tennantco.com
Service Information Manual
331475
Rev. 00 (02-2007)
Hygenic Fully Cleanable Tanks
FloorSmart
t Integrated Cleaning System
ES Extended Scrub System
R
R
The Safe Scrubbing AlternativeR
*331475*
T20

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
Specifications and parts are subject to change without notice.
Copyright E2007TENNANT Company, Printed in U.S.A.
B
A
T20 331475 (02-2007)
ii

T20 Service Information Manual
Table of Contents
(Page 1 of 2)
page
SAFETY PRECAUTIONS…………………………………………………v to vi
GENERAL MACHINE INFORMATION
Electrical Component Locator………………………………..……2 to 9
Hydraulic Component Locator………………………………..……10 to 17
Scrub Manifold Details………………………………..……16
Side Brush Manifold Details……………………………….17
Specifications………………………………..………………………18 to 20
Machine Dimensions………………………………..………………20
Basic Troubleshooting………………………………..……………21 to 22
MAINTENANCE
Maintenance Check Points………………………………..………24
Maintenance Chart………………………………..……………… 25 to 26
Lubrication………………………………..…………………………27
Hydraulics………………………………..…………………………29
Engine………………………………..…………………………..…30
Battery………………………………..…………………………..…33
Fuses & Relays………………………………..……………………33
Scrub Brushes & Pads………………………………..……………35
Side Brush………………………………..…………………………41
FaST System………………………………..………………………42
Squeegee Blades………………………………..…………………44
Skirts & Seals………………………………..………………………50
Brakes & Tires………………………………..…………………… 51
Propelling Motor………………………………..……………………51
Pushing,Towing,& Transporting Machine……………………… 52
Machine Jacking………………………………..………………… 54
Storage Information………………………………..………………54
Pinch Valve Adjustment………………………………..………… 55
ELECTRICAL
Electrical Schematic………………………………..………………58 to 64
Wiring Harness Detail………………………………..……………65 to 78
Main Wire Harness………………………………..…………65 to 72
Headlight Wire Harness………………………………..……73
Gas/LPG Engine Wiring………………………………..……74 to 77
FaST Wire Harness………………………………..……… 78
Electrical Symbols & Terms………………………………..………79
Touch Panel Detail………………………………..……………… 80
Touch Panel LED’s………………………………..……………… 81
Option Components………………………………..………………82
Key Switch………………………………..…………………………83
Key OFF Power Distribution………………………………..…… 84
Key ON Power Distribution………………………………..………85
Main Brushes ON………………………………..…………………86
Scrub Vacuum Fan ON & Squeegees DOWN………………… 87
Side Brush ON………………………………..……………………88
Tank Level Switches………………………………..………………89
Auto Fill Solenoids………………………………..…………………90
Detergent Pump & ES Pump………………………………..……91
Horn………………………………..…………………………..……92
Forward Propel………………………………..……………………93
Reverse Propel………………………………..……………………94
Gas/LPG Shutdown Relay (Normal Machine Operation)………95
Diesel Shutdown Relay (Normal Machine Operation)…………96
Gas/LPG Shutdown Relay (Shutdown Mode)……………………97
T20 331475 (02-2007)
iii

T20 Service Information Manual
Table of Contents
(Page 2 of 2)
page
ELECTRICAL (continued)
Diesel Shutdown Relay (Shutdown Mode)……………………
…
98
Gas/LPG Starting System ON………………………………..…
…
99
Diesel Starting System ON………………………………..……
…
100
Diesel Glow Plugs ON………………………………..…………
…
101
Conventional Solution Valves………………………………..…
…
102
FaST System ON………………………………..………………
…
103
Fuel Level Sensors………………………………..……………… 104
Impact, Hydraulic Temperature, & Hydraulic Filter Sensors…
…
105
Gas/LPG Engine Oil Pressure, Temperature, & MIL Systems
…
106
Diesel Engine Oil Pressure & Temperature Systems………… 107
Gas/LPG Fuel Pump & Engine Speed Control………………
…
108
Diesel Fuel Pump………………………………..………………
…
109
Diesel Engine Speed Control………………………………..…
…
110
Enable/Disable Chart………………………………..…………… 111
Control Board Connectors………………………………..……… 112
Fault Indicators………………………………..…………………
…
113
Condition & Warning Indicators………………………………..
…
114
Configuration Modes………………………………..……………
…
115 to 117
Diagnostic Modes………………………………..………………
…
118
HYDRAULICS
Hydraulic Schematic………………………………..……………
…
120
Hydraulic Hose, Pump & Valve Drawings……………………… 121 to 141
Steering and Propel………………………………..……… 121
Pumps and Vacuum Fan………………………………..
…
122
Cylindrical Brush………………………………..…………
…
124
Disk Brush………………………………..………………… 126
Squeegee Lift………………………………..……………
…
128
Pumps Group………………………………..……………
…
130
Cooler and Tubes Group………………………………..
…
132
Reservoir Group………………………………..…………
…
134
Scrub Manifold Valves Group……………………………
…
136
Side Brush Manifold Valves Group………………………
…
138
Side Brush Hose Group………………………………..…
…
140
Hydraulic Solenoid Valve Details……………………………….. 142
General Information………………………………..……………
…
143
Hydraulic Symbols………………………………..………
…
143
Pump Flow Rates………………………………..………… 144
Abbreviations………………………………..……………
…
144
Port Markings………………………………..……………
…
144
Operating Matrix………………………………..………………… 145
Option Components………………………………..……………
…
146
Scrub Head Lower………………………………..………………
…
147
Scrub Head Lift………………………………..…………………
…
148
Squeegees Lower………………………………..………………
…
149
Squeegees Lift………………………………..…………………
…
150
Main Brushes ON (Cylindrical Only)……………………………
…
151
Main Brushes ON (Disk Only)………………………………..…
…
152
Side Brush ON………………………………..…………………
…
153
Scrub Vacuum Fan ON………………………………..…………
…
154
Scrub Vacuum Fan & Side Brush ON…………………………
…
155
Side Brush Lower………………………………..………………
…
156
Side Brush Lift………………………………..…………………… 157
Side Brush Extend………………………………..………………
…
158
Side Brush Retract………………………………..……………… 159
T20 331475 (02-2007)
iv

The following precautions are used throughout
this manual as indicated in their description:
WARNING: To warn of hazards or
unsafe practices that could result in
severe personal injury or death.
CAUTION: To warn of unsafe practices
that could result in minor or moderate
personal injury.
FOR SAFETY: To identify actions that must be
followed for safe operation of equipment.
Do not use the machine other than described in
this Operator Manual. The machine is not
designed for use on public roads.
The following information signals potentially
dangerous conditions to the operator or
equipment:
WARNING: 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.
CALIFORNIA PROPOSITION 65
WARNING: Engine exhaust from this
product contains chemicals known to
the State of California to cause cancer,
birth defects, or other reproductive
harm.
FOR SAFETY:
1. Do not operate machine:
-- Unless trained and authorized.
-- Unless operator manual is read and
understood.
-- If it is not in proper operating
condition.
-- In flammable or explosive areas.
-- In areas with possible falling objects
unless equipped with overhead guard.
2. Before starting machine:
-- Check for fuel, oil, and liquid leaks.
-- Keep sparks and open flame away
from refueling area.
-- Make sure all safety devices are in
place and operate properly.
-- Check brakes and steering for proper
operation.
3. When starting machine:
-- Keep foot on brake and directional
pedal in neutral.
4. When using machine:
-- Use brakes to stop machine.
-- Go slow on inclines and slippery
surfaces.
-- Use care when reversing machine.
-- Do not carry passengers on machine.
-- Always follow safety and traffic rules.
-- Report machine damage or faulty
operation immediately.
-- Follow mixing and handling
instructions on chemical containers.
T20 Safety Precautions
(Page 1 of 2)
T20 331475 (02-2007)
v

5. Before leaving or servicing machine:
-- Stop on level surface.
-- Set parking brake.
-- Turn off machine and remove key.
6. When servicing machine:
-- Avoid moving parts. Do not wear loose
jackets, shirts, or sleeves.
-- Block machine tires before jacking
machine up.
-- Jack machine up at designated
locations only. Support machine with
jack stands.
-- Use hoist or jack that will support the
weight of the machine.
-- Wear eye and ear protection when
using pressurized air or water.
-- Disconnect battery connections before
working on machine.
-- Avoid contact with battery acid.
-- Avoid contact with hot engine coolant.
-- Do not remove cap from radiator when
engine is hot.
-- Allow engine to cool.
-- Keep flames and sparks away from
fuel system service area. Keep area
well ventilated.
-- Use cardboard to locate leaking
hydraulic fluid under pressure.
-- Use Tennant supplied or approved
replacement parts.
7. When loading/unloading machine
onto/off truck or trailer:
-- Turn off machine.
-- Use truck or trailer that will support
the weight of the machine.
-- 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.
T20 Safety Precautions
(Page 2 of 2)
T20 331475 (02-2007)
vi

T20
GENERAL
MACHINE
INFORMATION
T20 331475 (02-2007)
1

T20 Electrical Component Locator
(Page 1 of 8)
BATTERY
FUSE/RELAY PANEL
HORN
SOLUTION TANK FULL SWITCH S-14
FRONT
FRONT
IGNITION SWITCH S-1
F
RO
NT
FRONT
SIDE BRUSH SOLUTION
VALVE SOL-7
F
RO
NT
F
RO
NT
F
RO
NT
FRONT
BOTTOM VIEW
BRAKE LIGHT SWITCH S-3
T20 331475 (02-2007)
2

T20 Electrical Component Locator
(Page 2 of 8)
LIGHT SWITCH S-4
SPRAY NOZZLE SWITCH S-25
HORN SWITCH S-22
IGNITION SWITCH S-1
F
R
O
N
T
FRONT
ACCESS PANEL
F
R
O
N
T
AUDIBLE ALARM
T20 331475 (02-2007)
3

T20 Electrical Component Locator
(Page 3 of 8)
SCRUB VALVE
SV1, SV2, SV3, SV4,SV6, SV7
PROPEL PEDAL
POSITION SENSOR
SIDE BRUSH VALVE
SV8, SV10, SV11, SV12
DETERGENT PUMP
FRONT
FRONT
FRONT
FRONT
FRONT
SOLUTION TANK FULL SWITCH S-14
FRONT
MAIN BRUSH SOLUTION
VALVE SOL-3
FRONT
TOP VIEW
T20 331475 (02-2007)
4

FaST COMPONENTS HYDRAULIC FILTER
CLOGGED SWITCH S-17
LPG LOW FUEL
PRESSURE SWITCH S-8
FRONT
FRONT
FRONT
FRONT
HYDRAULIC OIL TEMPERATURE
SENSOR S-20 (BACK SIDE)
TOP VIEW
F
R
O
NT
SOLUTION TANK EMPTY
SWITCH S-19
FRONT
SIDE BRUSH SOLUTION
VALVE SOL-7
F
R
O
N
T
T20 Electrical Component Locator
(Page 4 of 8)
T20 331475 (02-2007)
5

FaST COMPONENTS
GAS/DIESEL FUEL LEVEL SENDER S-7
HYDRAULIC FILTER CLOGGED SWITCH S-17
HYDRAULIC OIL TEMPERATURE
SENSOR S-20 (BACK SIDE)
FRONT
TOP VIEW
FRONT
FRONT
T20 Electrical Component Locator
(Page 5 of 8)
F
R
O
NT
GAS/LPG ENGINE
DIAGNOSTIC CONNECTOR
FRONT
T20 331475 (02-2007)
6

T20 Electrical Component Locator
(Page 6 of 8)
AUTO FILL SOLENOID VALVES
SOL-1
SOL-2
TOP VIEW
INSIDE TANK
FRONT
F
R
O
N
T
FR
ON
T
F
RO
NT
F
R
ONT
F
R
O
N
T
FRON
T
INNER VIEW
RECOVERY TANK HALF
FULL SWITCH S-16
RECOVERY TANK FULL SWITCH S-15
OUTSIDE TANK
SPRAY NOZZLE/WAND PUMP
ES PUMP
T20 331475 (02-2007)
7

T20 Electrical Component Locator
(Page 7 of 8)
Coolant
Temperature
Switch
Crankshaft
Position
Sensor
Coolant
Temperature
Sensor
Oil
Pressure
Switch
Gas / LPG Engine
FR
O
N
T
T20 331475 (02-2007)
8

T20 Electrical Component Locator
(Page 8 of 8)
Crankshaft
Position
Sensor
Coolant
Temperature
Sensor
Oil
Pressure
Switch
Diesel Engine
F
R
O
N
T
T20 331475 (02-2007)
9

VACUUM FAN MOTOR
F
RO
NT
CYLINDRICAL MAIN BRUSH
MOTOR (REAR)
SIDE BRUSH MOTOR
LEFT SIDE SQUEEGEE LIFT CYLINDER
PROPEL MOTOR
FRONT
FRONT
FRONT
F
RO
N
T
FRONT
T20 Hydraulic Component Locator
(Page 1 of 8)
T20 331475 (02-2007)
10

F
RO
NT
DISK MAIN BRUSH MOTORS
F
R
ONT
VACUUM FAN MOTOR
SIDE BRUSH MOTOR
LEFT SIDE SQUEEGEE LIFT CYLINDER
PROPEL MOTOR
F
RO
N
T
FRONT
FRONT
FRONT
T20 Hydraulic Component Locator
(Page 2 of 8)
T20 331475 (02-2007)
11

HYDRAULIC OIL FILTER HYDRAULIC OIL RESERVOIR
FRONT
FRONT
FRONT
FRONT
RIGHT SIDE SQUEEGEE LIFT CYLINDER
CYLINDRICAL MAIN BRUSH
MOTOR (FRONT)
FRONT
F
R
O
N
T
STEERING VALVE
T20 Hydraulic Component Locator
(Page 3 of 8)
T20 331475 (02-2007)
12

FRONT
SCRUB MANIFOLD
SV1, SV2, SV3, SV4,SV6, SV7
RV1, RV2, CV1, PC1, PC2
FRONT
VACUUM FAN MOTOR
HYDRAULIC OIL HEAT
EXCHANGER
DISK MAIN BRUSH MOTORS
FRONT
FRONT
FRONT
PROPEL PUMP
ACCESSORY PUMPS
FRONT
F
R
ONT
SIDE BRUSH MANIFOLD
SV8, SV10, SV11, SV12, PR1, PC8
F
RO
NT
See pages 16 and 17 for more
information on the Scrub and
Side Brush manifolds
i
T20 Hydraulic Component Locator
(Page 4 of 8)
T20 331475 (02-2007)
13

STEERING CYLINDER
F
RO
N
T
FRONT BUMPER
(INNER VIEW)
SIDE BRUSH EXTEND CYLINDER
F
RONT
FR
ON
T
FRO
N
T
SIDE BRUSH LIFT CYLINDER
FRONT
F
RONT
MAIN SQUEEGEE LIFT CYLINDER
T20 Hydraulic Component Locator
(Page 5 of 8)
T20 331475 (02-2007)
14