Tennant 7400 User Manual

7400

(Gas/LPG)

(007000- )

(GM Engine) Rider Scrubber Operator Manual

The Safe Scrubbing AlternativeR

ESRExtended Scrub System

North America / International

330970

Rev. 04 (3-2007)

*330970*

www.tennantco.com

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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: S The machine is operated with reasonable care.

S The machine is maintained regularly - per the machine maintenance instructions provided. S The machine is maintained with manufacturer supplied or equivalent parts.

PROTECT THE ENVIRONMENT

Please dispose of packaging materials, old machine components such as batteries, hazardous fluids such as antifreeze and oil, in an environmentally safe way according to local waste disposal regulations.

Always remember to recycle.

MACHINE DATA

Please fill out at time of installation for future reference.

Model No. --

Serial No. --

Machine Options --

Sales Rep. --

Sales Rep. phone no. --

Customer Number --

Installation Date --

Tennant Company

PO Box 1452

Minneapolis, MN 55440

Phone: [phone] or (763) 513--2850

www.tennantco.com

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.

FaST--PAK is a US registered and unregistered trademark of Tennant Company.
Specifications and parts are subject to change without notice.
Copyright E 1998--2000, 2002--2007 TENNANT Company, Printed in U.S.A.
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CONTENTS

				CONTENTS
				Page														Page
SAFETY PRECAUTIONS . . . . . . . . . . . .			. . .	. . 3		POST-OPERATION CHECKLIST . . . . . . . . .													45
OPERATION . . . . . . . . . . . . . . . . . . . . . . .			. . .	. . . 7.		OPERATION ON INCLINES . . . . . . . . . . . . .													45
OPERATOR RESPONSIBILITY . . . .			. . .	. . 7		OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .													46
MACHINE COMPONENTS . . . . . . . .			. . .	. . 8				VACUUM WAND . . . . . . . . . . . . . . . . . . . .											46
SYMBOL DEFINITIONS . . . . . . . . . . .			. . .	. . 9		MACHINE TROUBLESHOOTING . . . . . . . .													49
CONTROLS AND INSTRUMENTS .			. . .	. . 10		MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . .													52
OPERATION OF CONTROLS . . . . .			. . .	. . 11		MAINTENANCE CHART . . . . . . . . . . . . . . . .													52
DIRECTIONAL PEDAL . . . . . . . . .			. . .	. . 11		LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . .													54
BRAKE PEDAL . . . . . . . . . . . . . . .			. . .	. . 12				ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . .											54
PARKING BRAKE PEDAL . . . . . .			. . .	. . 12				REAR WHEEL BEARINGS . . . . . . . . . . .											54
CHARGING SYSTEM LIGHT . . .			. . .	. . 12				FRONT WHEEL SUPPORT BEARING . 54
ENGINE OIL PRESSURE LIGHT			. . .	. . 13				SCRUB BRUSH IDLER . . . . . . . . . . . . . .											55
HIGH ENGINE TEMPERATURE						HYDRAULICS . . . . . . . . . . . . . . . . . . . . . . . . .													55
LIGHT . . . . . . . . . . . . . . . . . . . . .			. . .	. . 13				HYDRAULIC FLUID RESERVOIR . . . . . 55
MAINTENANCE MODE LIGHT . .			. . .	. . 13				HYDRAULIC FLUID . . . . . . . . . . . . . . . . .											56
RECOVERY TANK FULL LIGHT			. . . . . 14					HYDRAULIC HOSES . . . . . . . . . . . . . . . .											56
FUEL LEVEL LOW LIGHT . . . . . .			. . .	. . 14		ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .													57
OK LIGHT . . . . . . . . . . . . . . . . . . . .			. . .	. . 14				COOLING SYSTEM . . . . . . . . . . . . . . . . .											57
FUEL LEVEL GAUGE . . . . . . . . . .			. . .	. . 15				AIR FILTER INDICATOR . . . . . . . . . . . .											59
HOURMETER . . . . . . . . . . . . . . . .			. . .	. . 15				AIR FILTER . . . . . . . . . . . . . . . . . . . . . . . .											60
SQUEEGEE SWITCH . . . . . . . . . .			. . .	. . . 15				SPARK PLUGS . . . . . . . . . . . . . . . . . . . .											60
ES SWITCH (OPTION) . . . . . . . . .			. . .	. . . 16				CRANKCASE VENTILATION SYSTEM											60
SIDE BRUSH SWITCH (OPTION) . . . . . 16								TIMING BELT . . . . . . . . . . . . . . . . . . . . . .											60
DETERGENT FLOW SWITCH								FUEL FILTER (GASOLINE) . . . . . . . . . .											60
(OPTION) . . . . . . . . . . . . . . . . .			. . .	. . . 16				FUEL FILTER (LPG) . . . . . . . . . . . . . . . .											61
SCRUB SWITCH . . . . . . . . . . . . . .			. . .	. . . 17				ELECTRONIC PRESSURE REGULATOR
ENGINE SPEED SWITCH . . . . . .			. . .	. . . 18					(LPG) (For machines serial number
STEERING WHEEL . . . . . . . . . . .			. . .	. . . 18							009000 and above) . . . . . . . . . . . .								61
COVER RELEASE KNOB . . . . . .			. . .	. . . 18				ELECTRONIC FUEL INJECTION . . . . .											61
HORN BUTTON . . . . . . . . . . . . . . .			. . .	. . . 19		BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . .													62
IGNITION SWITCH . . . . . . . . . . . .			. . .	. . . 19		PROPELLING MOTOR . . . . . . . . . . . . . . . .													62
STEERING COLUMN TILT HANDLE				. . . 19		BELTS AND CHAINS . . . . . . . . . . . . . . . . . .													62
CHECK ENGINE LIGHT . . . . . . . .			. . .	. . . 20				ENGINE BELT . . . . . . . . . . . . . . . . . . . . .											62
CIRCUIT BREAKERS . . . . . . . . . .			. . .	. . . 20				STATIC DRAG CHAIN . . . . . . . . . . . . . .											62
FUSES . . . . . . . . . . . . . . . . . . . . . . .			. . .	. . . 21		SCRUB BRUSHES . . . . . . . . . . . . . . . . . . . .													63
SOLUTION FLOW SWITCH								REPLACING OR ROTATING THE
(WITHOUT FaST) . . . . . . . . . .			. . .	. . . 22				SCRUB BRUSHES . . . . . . . . . . . . . . . . .											64
SOLUTION FLOW SWITCH (FaST)				. . . 22				CHECKING AND ADJUSTING
FaST SWITCH . . . . . . . . . . . . . . . .			. . .	. . . 22					SCRUB BRUSH PATTERN . . . . . . .										65
SOLUTION TANK DRAIN HOSE			. . .	. . . 23		SOLUTION SYSTEM . . . . . . . . . . . . . . . . . .													68
RECOVERY TANK DRAIN HOSE			. . . . . 23					RECOVERY TANK . . . . . . . . . . . . . . . . .											68
OPERATOR SEAT . . . . . . . . . . . . .			. . .	. . . 24				SOLUTION TANK . . . . . . . . . . . . . . . . . .											68
LATCHES . . . . . . . . . . . . . . . . . . . .			. . .	. . . 24		DEBRIS TRAY . . . . . . . . . . . . . . . . . . . . . . . .													68
HOW THE MACHINE WORKS . . . . .			. . .	. . . 25		FaST SYSTEM . . . . . . . . . . . . . . . . . . . . . . .													69
FaST SCRUBBING SYSTEM . . . . . .			. . .	. . . 26				FaST SUPPLY HOSE CONNECTOR .											69
PRE-OPERATION CHECKLIST . . . .			. . .	. . . 27				FaST SYSTEM FILTER SCREEN . . . .											69
INSTALLING FaST PAK AGENT . . .			. . .	. . . 28				FaST SYSTEM AIR PUMP FILTER . . .											69
CHANGING AN LPG FUEL TANK . .			. . .	. . . 30				FaST SPRAY TUBE . . . . . . . . . . . . . . . .											70
STARTING THE MACHINE . . . . . . . .			. . .	. . . 31		SQUEEGEES . . . . . . . . . . . . . . . . . . . . . . . . .													70
SCRUBBING AND BRUSH INFORMATION 33								ADJUSTING REAR SQUEEGEE
FILLING THE TANKS . . . . . . . . . . . . .			. . .	. . . 34					BLADE DEFLECTION . . . . . . . . . . . .										70
SCRUBBING . . . . . . . . . . . . . . . . . . . .			. . .	. . . 36				LEVELING THE REAR SQUEEGEE . .											72
DOUBLE SCRUBBING . . . . . . . . . . . .			. . .	. . . 39
STOP SCRUBBING . . . . . . . . . . . . . .			. . .	. . . 39
DRAINING AND CLEANING THE TANKS . 40
STOP THE MACHINE . . . . . . . . . . . .			. . .	. . . 43
7400 (GM) 330970 (3 07)																			1
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CONTENTS

Page

SQUEEGEE BLADES . . . . . . . . . . . . . . . . . 73

REAR SQUEEGEE . . . . . . . . . . . . . . . . . 73

REPLACING OR ROTATING REAR

SQUEEGEE BLADES . . . . . . . . . . . . 73

SIDE SQUEEGEES . . . . . . . . . . . . . . . . 74

REPLACING SIDE SQUEEGEE

BLADES . . . . . . . . . . . . . . . . . . . . . 74

SKIRTS AND SEALS . . . . . . . . . . . . . . . . . . 75

SCRUB HEAD SKIRTS . . . . . . . . . . . . . 75

COVER SEALS . . . . . . . . . . . . . . . . . . . . 75

BRAKES AND TIRES . . . . . . . . . . . . . . . . . . 76

SERVICE BRAKES . . . . . . . . . . . . . . . . . 76

PARKING BRAKE . . . . . . . . . . . . . . . . . . 76

TIRES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

FRONT WHEEL . . . . . . . . . . . . . . . . . . . . 76

PUSHING, TOWING, AND

TRANSPORTING THE MACHINE . . . . 77

PUSHING OR TOWING THE MACHINE 77

TRANSPORTING THE MACHINE . . . . 78

MACHINE JACKING . . . . . . . . . . . . . . . . . . . 80

STORING MACHINE . . . . . . . . . . . . . . . . . . 80

OPTIONS . 81

SIDE BRUSH . . . . . . . . . . . . . . . . . . . . . . 81

REPLACING THE SIDE

SCRUB BRUSH . . . . . . . . . . . . . . 81

REPLACING THE SQUEEGEE

BLADE . . . . . . . . . . . . . . . . . . . . . . 82

SIDE BRUSH SKIRT . . . . . . . . . . . . . . . . 82

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 83

GENERAL MACHINE PERFORMANCE . . 83

FaST SYSTEM . . . . . . . . . . . . . . . . . . . . . . . 83

POWER TYPE . . . . . . . . . . . . . . . . . . . . . . . . 84

STEERING . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . 84

MACHINE DIMENSIONS . . . . . . . . . . . . . . . 85

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

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7400 (GM) 330970 (3--07)

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SAFETY PRECAUTIONS

SAFETY PRECAUTIONS

The following precautions are used throughout this manual as indicated in their description:

WARNING: To warn of hazards or unsafe practices that could result in severe personal injury or death.

CAUTION: To warn of unsafe practices that could result in minor or moderate personal injury.

FOR SAFETY: To identify actions that must be followed for safe operation of equipment.

The machine is suited to sweep disposable debris. 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(s).

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

WARNING: Moving belt and fan. Keep away.

WARNING: Strong Vacuum. Keep Away From Fan Inlet When Fan Is Running.

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.

WARNING: Hot bumper. Keep away.

CAUTION: LPG engine will run for a few seconds after key is turned off. Apply parking brake before leaving machine.

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 unless designed for use in those 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.

5.Before leaving or servicing machine: -- Stop on level surface.

-- Set parking brake.

-- Turn off machine and remove key.

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7400 (GM) 330970 (12--05)

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SAFETY PRECAUTIONS

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. 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.

-- Disconnect battery connections before working on machine.

-- Avoid contact with battery acid.

-- Avoid contact with hot engine coolant. -- 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.

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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.

FOR SAFETY LABEL -- LOCATED ON THE

SIDE OF THE OPERATOR COMPARTMENT.

EMISSIONS LABEL -- LOCATED ON THE SIDE OF THE OPERATOR COMPARTMENT.

LPG ENGINE WILL RUN LABEL -- LOCATED

NEXT TO THE IGNITION SWITCH ON THE

INSTRUMENT PANEL.

10783

FLAMMABLE SPILLS LABEL -- LOCATED ON

THE SIDE OF THE OPERATOR

COMPARTMENT.

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SAFETY PRECAUTIONS

FAN AND BELT LABEL -- LOCATED ON THE	STRONG VACUUM LABEL -- LOCATED ON
ENGINE COMPARTMENT LINTEL.	THE VACUUM FAN HOUSING.

HOT SURFACE LABEL --

LOCATED ON THE SIDE OF

THE BUMPER.

10783

FLAMMABLE MATERIALS LABEL -- LOCATED

NEXT TO THE SOLUTION TANK COVERS AND

ON THE DETERGENT TANK.

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7400 (GM) 330970 (9--04)

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OPERATION

OPERATION

OPERATOR RESPONSIBILITY

-The operator’s responsibility is to take care of the daily maintenance and checkups of the machine, to keep it in good working condition. The operator must inform the service mechanic or supervisor when the required maintenance intervals occur as stated in the MAINTENANCE section of this manual.

-Read this manual carefully before operating this machine.

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

- Check the machine for shipping damage. Check to make sure the machine is complete per shipping instructions.

- Keep your machine regularly maintained by following the maintenance information in this

manual. We recommend taking advantage 07324 of a regularly scheduled service contract

from your Tennant representative.

-Order parts and supplies directly from your authorized Tennant representative. Use the parts manual provided when ordering parts.

-After the first 50 hours of operation, follow the recommended procedures stated in the

MAINTENANCE CHART.

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OPERATION

MACHINE COMPONENTS

G

H

I F

H

G D

C

F B A

E

J	N
	M
	L

K

10783

A.Instrument panel

B.Steering wheel

C.Operator seat

D.Engine cover

E.Machine front cover

F.Solution tank covers

G.Solution tanks

H.Recovery tank covers

I.Recovery Tank

J.Rear squeegee

K.Side Squeegee

L.Scrub brush access door

M.FaST solution system

N.Fuel tank

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7400 (GM) 330970 (3--07)

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OPERATION

SYMBOL DEFINITIONS

These symbols identify controls, displays, and features on the machine:

Charging system

Steering tilt

Engine oil pressure

Horn

High engine temperature

Ignition switch

Maintenance mode

Circuit breaker 1

Recovery tank full

Circuit breaker 2

Fuel

Circuit breaker 3

Diagnostics

Circuit breaker 4

Hourmeter

Circuit breaker 5

ES

Circuit breaker 7

Side brush down and on

Circuit breaker 8

Rear squeegee down and vacuum on

Cover release

Detergent flow

Hydraulic fluid only

Solution flow

Gasoline fuel only

Scrub brushes down and on

Jack-point

Engine

Check Engine

7400 (GM) 330970 (3--07)

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OPERATION

CONTROLS AND INSTRUMENTS

D	H	K	L	M P
Y				Q
E				R
			N
F
			O	U
G	J
		I
AA
BB	Z T
		W	S	V
X

C

B

A

10654

A.Directional pedal

B.Brake pedal

C.Parking brake pedal

D.Charging system light

E.Engine oil pressure light

F.High engine temperature light

G.Maintenance mode light

H.Recovery tank full light

I.Fuel level low light

J.OK light

K.Fuel level gauge

L.Hourmeter

M.ES switch (option)

N.Side brush switch (option)

O.Squeegee switch

P.Detergent flow switch (option)

Q.Scrub switch

R.Engine speed switch

S.Steering wheel

T.Horn button

U.Ignition switch

V.Steering column tilt lever

W.Circuit breakers

X.Solution flow switch

Y.Cover release knob

Z.Check engine light

AA.FaST switch

BB.FaST solution flow switch

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OPERATION

OPERATION OF CONTROLS

DIRECTIONAL PEDAL

The directional pedal controls direction of travel and the propelling speed of the machine. You change the speed of the machine with the pressure of your foot; the harder you press the faster the machine travels.

Forward: Press the top of the directional pedal with the toe of your foot.

Reverse: Press the bottom of the directional pedal with the heel of your foot.

Neutral: Take your foot off the directional pedal and it will return to the neutral position.

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OPERATION

BRAKE PEDAL

The brake pedal stops the machine.

Stop: Take your foot off the directional pedal and let it return to the neutral position. Step on the brake pedal.

PARKING BRAKE PEDAL

The parking brake pedal sets and releases the rear wheel brakes.

Set: Press on the brake pedal as far as possible, then press on the parking brake pedal with the toe portion of your foot to lock the parking brake pedal in place.

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

Release: Press on the brake pedal to unlock the parking brake pedal.

CHARGING SYSTEM LIGHT

The charging system light comes on when the alternator is not operating within normal range; 13.5 to 14.5 Volts. Stop operating the machine. Locate the problem and have it corrected.

10642

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OPERATION

ENGINE OIL PRESSURE LIGHT

The engine oil pressure light comes on when the engine oil pressure falls below 40 kPa (5 psi). Stop operating the machine. Locate the problem and have it corrected.

HIGH ENGINE TEMPERATURE LIGHT

The high engine temperature light comes on when the temperature of the engine coolant is more than 107_ C (225_ F). If the light comes on, stop operating the machine. Locate the problem and have it corrected.

MAINTENANCE MODE LIGHT

The maintenance mode light comes on when the control panel diagnostic mode is manually activated. The maintenance mode is for service personnel use only. To clear the diagnostic mode, turn the ignition key all the way counter-clockwise.

10643

10644

10645

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OPERATION

RECOVERY TANK FULL LIGHT

The recovery tank full light starts blinking when the recovery tank is full. The light will blink for one minute and then stay on. Then the scrubbing operations will shut off.

FUEL LEVEL LOW LIGHT

The fuel level low light comes on when the gasoline or LPG fuel tank is almost empty. The LPG fuel tank has five minutes of fuel remaining when the level light comes on.

OK LIGHT

The OK light comes on after the control panel has run through and passed a self-check every time the machine is started. The OK light will go out when the scrub or squeegee switch is activated, or the engine speed is changed to (Fast).

HOURMETER

The hourmeter records the number of hours the machine has been operated. The hourmeter displays the number of hours in tenths of an hour. Use this information to determine machine maintenance intervals.

10886

10888

10889

07765

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OPERATION

FUEL LEVEL GAUGE

The fuel level gauge indicates how much fuel is in the fuel tank with a segmented LED light.

Gasoline powered machine: When the tank is full, all ten of the LED segments are lit. As the fuel tank empties, the LED segments shut off. The fuel tank is empty when all ten of the LED segments have shut off. The fuel level low light comes on when the last three LED segments are lit.

LPG powered machines: The fuel level gauge is not operational on LPG machines. However, the fuel level low light comes on when there is five minutes of fuel remaining in the tank.

NOTE: Do not use leaded fuels. The use of leaded fuels will cause permanent damage to the system’s oxygen sensor and the catalytic converter.

SQUEEGEE SWITCH

The squeegee switch controls the position of the rear squeegee, and starts and stops the vacuum fan. The rear squeegee can be operated separately, from the scrub brushes, for water pick-up.

Lower and start: Press the squeegee switch. The indicator light above the switch will come on.

Raise and stop: Press the squeegee switch. The indicator light above the switch goes off. There will be a slight delay before the vacuum fan shuts off.

NOTE: The rear squeegee lowers and the vacuum fan starts automatically when the scrubbing operations start.

NOTE: The rear squeegee will raise and the vacuum fan will stop when the machine travels in reverse.

NOTE: The rear squeegee will raise and the vacuum fan will shut off after a short delay when the scrubbing operations are shut off.

07764

10892

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OPERATION

ES SWITCH (OPTION)

The ES switch turns on and off the extended scrub system. When the machine is started, the ES switch will default to the last setting used.

On: Press the ES switch. The indicator light above the switch will come on.

Off: Press the ES switch. The indicator light above the switch goes off.

SIDE BRUSH SWITCH (OPTION)

The side brush switch controls the position and rotation of the side brush, and the solution flow to the side brush. When the machine is started, the side brush switch will default to the last setting used.

Down and on: Press the side brush switch. The indicator above the switch comes on.

Up and off: Press the side brush switch. The indicator above the switch goes off.

NOTE: The side brush will lower and start when the scrubbing operations start. The main scrub brushes have to be on for the side brush to operate.

DETERGENT FLOW SWITCH (OPTION)

The detergent flow switch starts and stops the detergent pump for the optional ES system. When the machine is started, the detergent flow switch will default to the last setting used.

Start at one-half flow: Press the detergent flow switch. The left indicator light above the switch will come on.

Increase to full flow: Press and hold the detergent flow switch until both indicator lights above the switch come on.

Stop: Press the detergent flow switch. Both indicator lights are off.

10890

10891

10893

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OPERATION

SCRUB SWITCH

The scrub switch controls the scrubbing operations. The scrub switch also sets the scrub brush pressure.

The scrubbing operations include the following. The scrub head lowers and the brushes turn on. The rear squeegee will lower and the vacuum fan

will start. The solution system will start, if the

solution flow switch is on. The FaST system or optional ES system and detergent pump will start,

if the switches are on. The optional side brush will lower and turn on, if the side brush switch is on. The engine speed will change to (Fast).

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NOTE: The brush pressure setting, the FaST system, the detergent flow rate, the side brush, and the ES system will default to the last setting used when the scrubbing operations are started again.

Start: Press the scrub switch. The indicator light above the switch will come on.

Stop: Press the scrub switch. The indicator light above the switch goes off.

Scrub brush pressure: Press and hold the scrub switch. The brush pressure will scroll through the three settings. The pressure setting selected when the switch is released, will be the new default brush pressure setting.

The brush pressure has three positions. Under normal conditions, the brush pressure should be set in the minimum setting. Under heavy grime conditions, the brush pressure should be set in the maximum setting. Travel speed and floor conditions will affect the scrubbing performance.

NOTE: The scrub head and squeegee will raise when the machine travels in reverse.

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7400 (GM) 330970 (3--05)

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OPERATION

ENGINE SPEED SWITCH

The engine speed switch controls the engine governed speed. The two indicator lights above the switch show the engine speed; idle or fast.

Idle: The engine will automatically start in idle speed. To return the engine to idle from the (Fast) engine speed, press the engine speed switch until the left indicator light comes on. The scrubbing operations will turn off automatically.

Fast: Press the engine speed switch and the right indicator light comes on. This speed is for transporting and scrubbing.

NOTE: The engine will automatically operate in the (Fast) speed when the scrubbing operations are started.

STEERING WHEEL

The steering wheel controls the machine’s direction. The machine is very responsive to the steering wheel movements.

Left: Turn the steering wheel to the left.

Right: Turn the steering wheel to the right.

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COVER RELEASE KNOB

The cover release knob releases the machine front cover latch.

To release: Pull out and hold the cover release knob, then pull open the machine cover.

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7400 (GM) 330970 (12--03)

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OPERATION

HORN BUTTON

The horn button operates the horn.

Sound: Press the button.

IGNITION SWITCH

The ignition switch starts and stops the engine with a key. The operating lights will automatically turn on when the machine is started.

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

Start: Turn the key all the way clockwise.

Release the key as soon as the engine starts.

Stop: Turn the key counter-clockwise.

CAUTION: LPG engine will run for a few seconds after key is turned off. Apply parking brake before leaving machine.

NOTE: To protect the engine’s emission components on LPG powered machines, the engine will continue to operate for a few seconds after the ignition switch is turned off.

STEERING COLUMN TILT HANDLE

The steering wheel tilt handle adjusts the angle of the steering wheel.

Adjust: Pull out the tilt handle, move the wheel up or down, and release the tilt handle.

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7400 (GM) 330970 (12--05)

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OPERATION

CHECK ENGINE LIGHT

The check engine light comes on if the engine control system detects a fault during machine operation.

If the check engine light comes on while operating the machine, contact a TENNANT service representative.

CIRCUIT BREAKERS

The circuit breakers are resetable electrical circuit protection devices. Their design stops the flow of current in the event of a circuit overload. Once a circuit breaker is tripped, it must be reset manually. Press the reset button after the breaker has cooled down.

If the overload that caused the circuit breaker to trip is still there, the circuit breaker will continue to stop current flow until the problem is corrected.

The circuit breakers are located in the operator compartment.

The chart lists the circuit breakers and the electrical components they protect.

Circuit
Breaker	Rating	Circuit Protected
CB-1	15 A	Ignition
CB-2	15 A	ES (option)
CB-3	15 A	Operating lights
CB-4	15 A	Back-up alarm (option)
CB-5	15 A	Horn
CB-6	5 A	Instrument panel (007000--007548)
CB-6	15 A	Instrument panel (007549--	)
CB-7	15 A	Scrubbing
CB-8	15 A	Side brush (option)

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7400 (GM) 330970 (3--05)

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OPERATION

FUSES

The fuses are one-time protection devices designed to stop the flow of current in the event of a circuit overload.

NOTE: Always replace the fuse with a fuse of the same amperage.

The main harness fuse is located near the relays under the front hood. Access the fuse by opening the front hood.

Main Harness Fuse

Fuse	Rating	Circuit Protected
FU-1	15 A	Circuit board

The engine harness fuses are located near the engine under the engine cover. Access the fuses by opening the engine cover.

Engine Harness Fuses (S/N 007000--007078)

Fuse	Rating	Circuit Protected
FU-1	5 A	Key switch
FU-2	20 A	Main power
FU-3	15 A	Auxilary power
FU-4	15 A	Fuel pump

Engine Harness Fuses (S/N 007079--			)
Fuse	Rating	Circuit Protected
FU-1	5 A	Key switch
FU-2	20 A	Main power
FU-3	15 A	Auxilary power
FU-4	15 A	Fuel pump
FU-5	50 A	Alternator

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7400 (GM) 330970 (9--04)

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OPERATION

SOLUTION FLOW SWITCH (WITHOUT FaST)

The solution flow switch controls the flow of solution to the floor. The solution flow switch is only on machines without the FaST system.

Start (1): Place the solution flow switch in the middle position. Use this flow rate for smooth floors and light dirt.

Increase (2): Press the right of the solution flow switch. Use this flow rate for rough floors and heavy or compacted dirt.

Stop (0): Press the left of the solution flow switch.

NOTE: The solution flow starts, if the solution flow switch is on, when the scrubbing operations start.

SOLUTION FLOW SWITCH (FaST)

The FaST solution flow switch enables the FaST (Foam Scrubbing Technology) system. When the FaST system is enabled, it is turned on and off with the FaST switch. Disable the FaST system before using the machine for conventional scrubbing.

For machines with the FaST system, the FaST solution flow switch controls the flow of solution to the floor.

Start (1): Place the FaST solution flow switch in the middle position. Use this flow rate for smooth floors and light dirt.

Increase (2): Press the top of the FaST solution flow switch. Use this flow rate for rough floors and heavy or compacted dirt.

Stop (0): Press the bottom of the FaST solution flow switch.

FaST SWITCH

The FaST switch enables the FaST (Foam Scrubbing Technology) system. When the FaST system is enabled, it is turned on and off with the FaST switch. Disable the FaST system before using the machine for conventional scrubbing.

Disable FaST for conventional scrubbing: Press the bottom of switch to the FaST system off position.

Enable the FaST system: Press the top of switch to the FaST system on position.

NOTE: The FaST system will not start until the directional pedal is pressed.

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7400 (GM) 330970 (3--05)

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OPERATION

SOLUTION TANK DRAIN HOSE

The solution tank drain hose is used to drain the solution tank. Drain the solution tank by removing the drain hose cap from the tank access cap. Pull out the solution tank hose and remove the drain hose end cap.

RECOVERY TANK DRAIN HOSE

The recovery tank drain hose is used to drain the recovery tank. Drain the recovery tank by removing the drain hose cap from the tank access cap. Pull out the recovery tank hose and remove the drain hose end cap.

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7400 (GM) 330970 (9--04)

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OPERATION

OPERATOR SEAT

The operator seat is a fixed back style with a forward-backward position adjustment.

Adjust: Pull the lever, slide the seat backward or forward to the desired position and release the lever.

Lift: Pull up on the seat mounting plate until the seat mount locks up.

Lower: Pull on the release lever and lower the seat mounting plate.

LATCHES

The side doors, engine cover, debris tray, back grille, and solution tank covers are secured with latches.

Open the brush side doors: Push down on the door latch.

Open the engine side door: Pull out on the door latch.

Open the engine cover: Open the engine side door and pull on the latch release.

Release the debris tray: Pull down on the latch handle.

Open the back grille: Pull up on the latches.

Open the solution tank covers: Pull up on the cover latch.

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7400 (GM) 330970 (3--05)

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OPERATION

HOW THE MACHINE WORKS

The steering wheel controls the direction of machine travel. The directional pedal controls the speed and forward/reverse direction. The brake pedal slows and stops the machine.

Water and detergent, from the solution tank, flow to the floor through a solution valve to the scrub brushes. The brushes scrub the floor. As the machine travels forward the squeegee wipes the dirty solution off the floor, which is then picked up and drawn into the recovery tank.

When using the ES mode, the solution in the recovery tank is filtered and returned to the solution tank to be reused.

When scrubbing is finished, drain and clean the recovery tank. If using the ES system, drain and clean the solution tank, clean the solution outlet filter, and clean the ES filter.

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7400 (GM) 330970 (9--04)

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OPERATION

FaST SCRUBBING SYSTEM

Unlike conventional scrubbing, the FaST (Foam Scrubbing Technology) system operates by injecting the FaST PAK concentrate agent into the system with a small amount of water and compressed air. This mixture creates a large volume of expanded wet foam.

The expanded foam mixture is then dispersed onto the floor while the machine is scrubbing. When the squeegee picks up the mixture, the patented foaming agent has collapsed and is recovered into the recovery tank.

The FaST system can be used with all double scrubbing and heavy duty scrubbing applications.

Using the FaST system can increase
productivity by 30% by reducing your dump/fill
cycle. It will also reduce chemical usage and
storage space. One FaST PAK of concentrated	The safe scrubbing alternative
agent can scrub up to 1 million sq. ft.

NOTE: Do not enable the FaST system with conventional cleaning detergents in the solution tank. Drain, rinse and refill the solution tank with clear cool water only before operating the FaST system. Conventional cleaning detergents/ restorers may cause failure to the FaST solution system.

NOTE: Storage or transporting machines equipped with FaST in freezing temperatures requires special procedures. Check with a TENNANT representative for advice.

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7400 (GM) 330970 (3--07)

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