TENNANT T7 SCRUBBER DRYER OPERATOR MANUAL · TENNANT T7 SCRUBBER DRYER OPERATOR MANUAL Clemas & Co....

TENNANT T7

SCRUBBER DRYER OPERATOR MANUAL

Clemas & Co. Unit 5 Ashchurch Business Centre, Alexandra Way, Tewkesbury, Gloucestershire, GL20 8NB.

Tel: 01684 850777 Fax: 01684 850707 Email: [email protected] Web: www.clemas.co.uk

mailto:[email protected]

http://www.clemas.co.uk/

SAFETY PRECAUTIONS

3T7 331051 (11--04)

The safety labels appear on the machine in thelocations indicated. If these or any label becomesdamaged or illegible, install a new label in itsplace.

BATTERY CHARGING LABEL -- LOCATEDON THE SEAT PANEL

FLAMMABLE SPILLS LABEL -- LOCATEDON THE SEAT PANEL

FOR SAFETY LABEL --LOCATED ON THE SEAT PANEL

FLAMMABLE MATERIALS LABEL --LOCATED UNDER THE SOLUTION FILLPORT AND NEXT TO FOOT PEDALS

ELECTRICAL COMPONENTS, USEGROUNDING STRAP BEFORE OPENINGPANEL LABEL -- LOCATED ONELECTRICAL PANEL UNDER THE SEAT

OPERATION

4 T7 331051 (11--04)

OPERATION

MACHINE COMPONENTS

A

BD

C

H

I

J

G

E

L

M

N

F

K

O

S

R

Q

P

A. Recovery tank drain hoseB. Recovery tank coverC. Recovery tankD. Operator seatE. BatteriesF. Rear squeegeeG. Side squeegeeH. Scrub headI. Steering wheelJ. Solution tank

K. Tool Box oroptional FaST--PAK compartment

L. Solution tank fill capM. Solution tank drain hoseN. Squeegee hoseO. Front solution tank coverP. Hour meterQ. Circuit breakersR. 100 A FuseS. Battery charging connector

OPERATION

5T7 331051 (11--04)

CONTROLS AND INSTRUMENTS

A

F

J

E

BC D

G

H

I

K

L

M

N

0

P

Q

R

A. Solution tank empty indicatorB. Recovery tank full indicatorC. Battery charge level indicatorsD. Fault indicatorE. Emergency Stop ButtonF. Directional switchG. Horn buttonH. On/Off key switchI. One Step scrub buttonJ. FaST button (option)K. Vacuum fan / squeegee buttonL. Brush Pressure increase button (+)M. Brush Pressure decrease button (--)N. Solution increase button (+)O. Solution decrease button (--)P. Brake pedalQ. Propel pedalR. Control panel cover

OPERATION

6 T7 331051 (9--06)

HOW THE MACHINE WORKS

The machine solution tank, scrub brushes,squeegee, vacuum fan, and recovery tank worktogether to effectively clean dirty floors.

Water and detergent from the solution tank flow tothe floor through a solution valve. The brushesuse the detergent and water solution to scrub thefloor clean. As the machine propels forward, thesqueegee wipes the dirty solution from the floor.The suction created by the vacuum fan thendraws the dirty solution from the squeegee intothe recovery tank.

The steering wheel controls the path of themachine travel. The directional switch controls theforward or reverse direction of the machine. Thepropel pedal controls the speed of the machine.The brake pedal slows and stops the machine.

The buttons on the control panel control themachine scrubbing functions. The One StepScrub button turns the preset scrub functions onand off. The FaST button controls use of theFoam scrubbing system. The vacuum fan /squeegee button turns the vacuum fan on/off andraises and lowers the squeegee. The brushpressure buttons control the scrub brushpressure, and the solution buttons control thesolution flow.

There are two different types of scrub headsavailable, cylinderical and disk. Both scrub headsare available in two different widths. The Diskscrub head is available in 650 mm (26 in) wide and800 mm (32 in) wide. The Cylinderical scrub headis available in 700 mm (28 in) wide and 800 mm(32 in) wide.

NOTE: The amount and type of soilage play animportant role in determining the type of brushesor pads to use. For specific recommendations,see the BRUSH INFORMATION section of thismanual or contact a Tennant representative.

FOAM SCRUBBING SYSTEM (FAST MODE)

Unlike conventional scrubbing, the optional FaST(Foam Scrubbing Technology) system operates byinjecting the FaST--PAK concentrate agent intothe system with a small amount of water and air.This mixture creates a large volume of expandedwet foam.

The expanded foam mixture is then dispersedonto the floor while the machine is scrubbing.When the squeegee picks up the mixture, thepatented foaming agent has collapsed and isrecovered into the recovery tank.

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

Using the FaST system improves safety and canincrease productivity by 30% by reducing yourdump/fill cycle. It will also reduce chemical usageand storage space. One FaST--PAK ofconcentrated agent can scrub up to 90,000 m2 (1million square feet).

NOTE: Do not use the FaST system withconventional cleaning detergents in the solutiontank. Drain, rinse and refill the solution tank withclear cool water before operating the FaSTsystem. Conventional cleaning detergents maycause failure to the FaST system.

OPERATION

7T7 331051 (9--06)

BRUSH INFORMATION

For best results, use the correct brush type for thecleaning application. The following arerecommended brush applications.

Non-scuff polypropylene brush (Cylindericaland Disk) -- This brush uses a softer, generalpurpose polypropylene bristle to lift lightlycompacted soilage without scuffing high-glosscoated floors.

Nylon brush (Cylinderical and Disk) -- Softernylon bristles are recommended for scrubbingcoated floors. Cleans without scuffing

Super abrasive bristle brush (Cylinderical andDisk) -- Nylon fiber impregnated with abrasive gritto remove stains and soilage. Strong action onany surface. Performs well on buildup, grease, ortire marks.

Heavy duty stripping pad -- This black pad is forstripping floors. Cuts through old heavy finisheseasier to prepare the floor for recoating.

Stripping pad -- This brown pad is for strippingfloors. Quickly and easily cuts through old finish toprepare the floor for recoating.

Scrubbing pad -- This blue pad is for scrubbingfloors. Removes dirt, spills, and scuffs. Leaves aclean surface ready for recoating.

Buffing pad -- This red pad is for buffing floors.Quickly cleans and removes scuff marks whilepolishing the floor to a high gloss.

Polishing pad -- This white pad is for polishingfloors. Maintains a high gloss. Use for buffing verysoft finishes and lower traffic areas, and polishingsoft waxes on wood floors.

MACHINE SETUP

ATTACHING SQUEEGEE ASSEMBLY

1. Stop machine on a level surface.

2. Turn the machine ON/OFF key switch off.

FOR SAFETY: Before leaving or servicingmachine, stop on level surface, and turn offmachine.

3. Place the rear squeegee under the squeegeemount bracket and fasten with the two knobs.

The squeegee deflection is set at the factory.If the squeegee blade needs adjustments, seeADJUSTING REAR SQUEEGEE BLADEDEFLECTION section of this manual.

INSTALLING BRUSHES/PADS

To install the brushes or pad, see REPLACINGDISK SCRUB BRUSHES OR PAD DRIVER orREPLACING CYLINDERICAL SCRUB BRUSHESsection of this manual.

OPERATION

8 T7 331051 (9--06)

FILLING THE SOLUTION TANK

The machine is equipped with a fill port at the rearof the machine.

WARNING: Flammable materials cancause an explosion or fire. Do not useflammable materials in tank(s).

FOR CONVENTIONAL SCRUBBING: Open thesolution tank fill port and partially fill it with water(not to exceed 60°C / 140°F). Pour the requiredamount of detergent into the solution tankaccording to mixing instructions on the bottle.Then continue filling the solution tank with warmwater until the water level is just below the fill port.

FOR SAFETY: When using machine, followmixing and handling instructions on chemicalcontainers.

FOR FOAM SCRUBBING (FaST MODE) : FILLTHE TANK WITH ONLY CLEAN COOL WATER(less than 21°C / 70°F). DO NOT use hot water oradd any conventional floor cleaning detergents orFaST system failure may result.

NOTE: When filling the solution tank with abucket, make sure that the bucket is clean. Do notuse the same bucket for filling and draining themachine.

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

MACHINE OPERATION

PRE--OPERATION CHECKLIST

- Check the battery fluid and charge level.

- Check the tank cover seals for damage andwear.

- Clean the vacuum fan inlet filter.

- Check the condition of the scrubbing brushes.Remove any string, banding, plastic wrap, orother debris wrapped around them.

- Cylinderical brushes: Check that the debristray is empty and clean.

- Check the squeegees for damage, wear andfor deflection adjustment.

- Check the vacuum hose for debris orblockage.

- Drain and clean the recovery tank.

- Check the brakes and steering for properoperation.

- Check the service records to determinemaintenance requirements.

- FaST Scrubbing: Check the FaST--PAK(option) concentrate agent level. Replacecarton as needed. See the INSTALLING THEFaST--PAK AGENT section of the manual.

- FaST Scrubbing: Ensure that all conventionalcleaning agents are drained and rinsed fromthe solution tank.

- FaST Scrubbing: Ensure that the solution tankis filled with clear cool water only.

BEFORE OPERATING

Pick up oversized debris before scrubbing. Pickup pieces of wire, string, twine, etc., that couldbecome wrapped around the scrub brush.

Plan the scrubbing in advance. Try to arrangelong runs with minimum stopping and starting. Doan entire floor or section at one time.

Pre--sweep the area to prevent streaking.

OPERATION

9T7 331051 (11--04)

SETTING SCRUB MODES

Before scrubbing, determine which scrub modewill be used (FaST or conventional). Then set thescrub brush pressure and if conventionalscrubbing, adjust the solution flow levels.

SETTING FaST BUTTON

The FaST button enables the FaST system tocome on when the One Step Scrub button is on.The light next to the button will come on when it isin this mode.

NOTE: The solution flow cannot be adjusted whenthe machine is in the FaST mode.

SETTING BRUSH PRESSURE

Under normal conditions, the brush pressureshould be set to the minimum setting (the bottomlight). Under heavy grime conditions, the brushpressure should be set to the maximum setting(the top light). Travel speed and floor conditionswill affect scrubbing performance.

With the One Step Scrub button on, press eitherthe Brush Pressure increase button (+) or theBrush Pressure decrease button (--) to set thescrubbing pressure for the surface being cleaned.The new pressure setting will default to thissetting when the machine is powered on or off.

SETTING SOLUTION FLOW LEVEL(CONVENTIONAL SCRUBBING ONLY)

NOTE: The solution flow cannot be adjusted whenthe machine is in the FaST mode.

Under normal soilage conditions the solution flowlevel should be set to the lowest setting (thebottom light). Under heavy grime conditions, thesolution flow level should be set to the highersettings (middle or top lights). Travel speed andfloor conditions will affect scrubbing performance.

With the One Step Scrub button on, press eitherSolution increase button (+) or Solution decreasebutton (--) to set the solution flow level for thesurface being cleaned. The new solution flowsetting will default to this setting when themachine is powered on or off.

ECONOMY SETTING

The machine will operate for a longer time if theBrush Pressure and Solution Flow settings are inthe Economy setting. The bottom lights of theBrush Pressure and Solution Flow settings are onwhen the machine is in the Economy setting.

OPERATION

10 T7 331051 (11--04)

SCRUBBING

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

1. Turn the On/Off key switch on.

NOTE: Make sure the scrub modes / settings areset before scrubbing.

2. Press the One Step Scrub button. The light onthe button is illuminated. All the presetscrubbing functions will turn on.

NOTE: Open the control panel cover to adjust theBrush Pressure and Solution Flow Setting whilescrubbing if necessary.

NOTE: DO NOT turn the FaST system on duringconventional scrubbing. Conventional cleaningdetergents may cause the FaST injection systemto fail. Drain, rinse, and refill solution tank withcool clean water before operating the FaSTsystem.

3. Place the directional switch in the direction themachine is to be moved (forward or reverse).

NOTE: The machine can scrub in both forward orreverse. The horn will sound when in reverse.

NOTE: The squeegee automatically raises whenthe machine is driven backwards. This preventsdamaging the squeegee. When the machine isplaced in reverse, the vacuum fan will shut offafter a short delay.

4. Press the propel pedal to begin scrubbing.

WARNING: Flammable materials orreactive metals can cause an explosionor fire. Do not pick up.

5. Release the propel pedal to stop the machine.Scrubbing functions stop and the automaticpark brake will engage when the machinestops.

OPERATION

11T7 331051 (9--06)

6. The Brake pedal can be used to control themachine if quicker stopping is needed or ifoperating on an incline. Do not operatemachine on inclines exceeding 7% (4_) whenscrubbing.

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

7. Press the One Step Scrub button to stopscrubbing. The light next to the One StepScrub button will turn off and the scrubbingfunctions will turn off after a short delay.

DOUBLE SCRUBBING

For heavily soiled areas, use the double scrubbingmethod.

Disk brushes: Before double scrubbing, removethe side squeegees to keep them from channelingwater while double scrubbing. To remove the sidesqueegees, lower the scrub head, then pull thepins on the front and rear ends of the squeegees.If the machine is equipped with the accessorybasket, you may hang the side squeegees fromthe hooks.

To double scrub, press the One Step Scrubbutton, then the vacuum fan button. The lightabove the vacuum fan button will turn off, thesqueegee will raise and the vacuum fan will stopoperating. Then scrub the area.

Let the cleaning solution set on the floor for 3--5minutes.

OPERATION

12 T7 331051 (11--04)

Place the side squeegees back on to the machinebefore scrubbing the floor the second time.

NOTE: It is easier to put the side squeegeesback on to the machine with the scrub headpartially lowered. This allows clearance to installthe pins.

Press the vacuum fan button again to lower thesqueegee and to turn on the vacuum fan. Thelight above the vacuum fan button will come on.Then scrub the floor a second time picking up thecleaning solution.


NOTE: When scrubbing the area a second time,you can turn off the solution flow by pressing theSolution decrease button (--) repeatedly until alllights above the button are off.

WATER PICKUP MODE (NO SCRUBBING)

The machine can be used to pick up water ornon--flammable liquid spills without scrubbing.

To pick up water or non--flammable liquid spills,check to make sure that the One Step Scrubbutton is not activated. The light next to the OneStep Scrub button must be off.


Then press the vacuum fan button. The lightabove the vacuum fan button will turn on, thesqueegee will lower and the vacuum fan will startoperating. Then pick up the water ornon--flammable liquid spill.

OPERATION

13T7 331051 (11--04)

WHILE OPERATING THE MACHINE

Drive as straight a path as possible. Avoidbumping into posts or scraping the sides of themachine. Overlap the scrub paths by severalcentimeters (a few inches).

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

When scrubbing dead end aisles, start at theclosed end of the aisle and scrub out towards theopening.

Adjust the machine speed, brush pressure, andsolution flow as required when scrubbing. Use theminimal brush pressure and solution flow settingsas possible. Use the FaST system for the bestresults.

Keep the machine moving to prevent damagingfloor finishes.

If poor scrubbing performance is observed, stopscrubbing and refer to MACHINETROUBLESHOOTING.

Conventional Scrubbing: Pour a recommendedfoam control solution into the recovery tank ifexcessive foam appears.

Change or rotate pads as necessary.

Observe the battery discharge indicator to ensurethere is adaquate charge for machine operation.

Observe the solution tank indicator to ensure thesolution tank is not empty. Always empty recoverytank before refilling the solution tank.

Observe the recovery tank indicator to ensure therecovery is not full.

Remove the key when leaving the machineunattended.

Perform the Daily Maintenance Procedures afterscrubbing (see MACHINE MAINTENANCE).

EMERGENCY STOP BUTTON

The Emergency Stop Button halts all power to themachine in case of an emergency. Press thebutton to halt the machine power. To restart themachine, turn the Emergency Stop Button to theright. Then turn the on/off switch to the off positionand then to the on position.

NOTE: This button should not be used for normalstopping as premature wear to the parking brakemay occur.

HOUR METER

The hour meter records the number of hours themachine has been powered on. This information isuseful for servicing the machine. It is locatedunder the seat.

OPERATION

14 T7 331051 (11--04)

SOLUTION TANK EMPTY INDICATOR

The solution tank empty indicator comes on whenthe solution tank is empty. When this happens, thescrub functions are disabled. If necessary, pressthe ONE STEP Scrub button for an additionalminute of operation to pick up standing water orsolution.

RECOVERY TANK FULL INDICATOR

The recovery tank full indicator comes on whenthe recovery tank is full. When this happens, thescrub functions are disabled. If necessary, pressthe ONE STEP Scrub button for an additionalminute of operation to pick up standing water orsolution.

BATTERY DISCHARGE INDICATOR

The battery discharge indicator shows the chargelevel of the batteries.

When the batteries are fully charged, all five lightsare lit. As the batteries discharge, the lights go outuntil only the left light is blinking.

When the left light blinks, the scrubbing functionswill shut off to alert the operator of the batterycondition. The machine will still propel when thelight is blinking. Recharge the batteries when thelight blinks. If necessary, press the ONE STEPScrub button for an additional minute of operationto pick up standing water or solution.

NOTE: Do not charge batteries more often thannecessary. Excessive charging could reduce thelife of the batteries. It is best to charge thebatteries only when the left light indicates that thebattery needs charging. See BATTERIES in theMAINTENANCE section.

NOTE: The blinking left battery discharge light willnot reset from blinking until the batteries are fullycharged.

OPERATION

15T7 331051 (11--04)

FAULT INDICATOR

The fault indicator light (shown in upper right)comes on when there a fault is detected in thepropelling motor, vacuum fan motor, or brushmotors.

Refer to the table below to determine the causefor the fault or failure.

Indicator(s) Cause(s) Remedy

Fault Light blinks Propel motor is overloaded Contact Tennant servicerepresentative

Fault Light and bottomBrush Pressure Light

both blink

Right Brush Motor is overloaded(possibly from string or banding

wrapped around motor)

Remove string / banding from Rightbrush motor or Contact

Tennant service representative

Fault Light and topBrush Pressure Light

both blink

Left Brush Motor is overloaded(possibly from string or banding

wrapped around motor)

Remove string / banding from Leftbrush motor or Contact

Tennant service representative

Fault Light andVacuum Fan Light

both blink

Vacuum Fan Motor is overloaded Contact Tennant servicerepresentative

OPERATION

16 T7 331051 (9--06)

CIRCUIT BREAKERS

Circuit breakers are resettable electrical circuitprotection devices that stop the flow of current inthe event of a circuit overload. Once a circuitbreaker is tripped, allow breaker to cool and thenpress the reset button to manually reset thebreaker.

If the overload that caused the circuit breaker totrip is still there, the circuit breaker will continue tostop current flow until the problem is corrected.

The circuit breakers are located inside the batterycompartment next to the hour meter.

The chart shows the circuit breakers and theelectrical components they protect.

CircuitBreaker Rating Circuit Protected

CB1 5 A Instrument Panel -- power

CB2 15 A Accessories

FUSES

The fuse is a one-time protection device designedto stop the flow of current in the event of a circuitoverload. The 100 A fuse is located inside thebattery compartment near the hourmeter. Itprotects the propel circuit.

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

HAZARD LIGHT SWITCH (OPTION)

The Hazard Light Switch operates the optionalhazard light.

OPERATION

17T7 331051 (11--04)

DRAINING AND CLEANING THE TANKS

When cleaning is finished, or when the recoverytank full indicator comes on, the recovery tankshould be drained and cleaned. The solution tankthen can be filled again for additional cleaning.

1. Drive the machine to a solution disposal drain.



3. Tilt the operator seat forward and hook theseat latch into place to hold up the seat.

4. Remove the recovery tank drain hose. Whileholding the hose up, remove the plug, thenslowly lower the drain hose to the floor drainor sink.

5. Lift the recovery tank cover. Flush the insideof the recovery tank with clean water.

WARNING: Flammable materials cancause an explosion or fire. Do not useflammable materials in tank(s).

NOTE: DO NOT use steam to clean tanks.Excessive heat can damage tanks andcomponents.

6. Rinse the float sensor located inside therecovery tank.

7. Replace the recovery tank drain hose cap andmount the drain hose back onto the mountingclip after the tank is drained.

8. Remove and clean the vacuum fan filter.Clean the filter with a damp cloth or lowpressure water hose if dirty. Allow the vacuumfan filter to dry completely before reinstalling itin the machine.

OPERATION

18 T7 331051 (9--06)

9. Close the recovery tank cover.

10.Remove the solution tank drain hose. Whileholding the hose up, remove the plug, thenslowly lower the drain hose to the floor drainor sink.

11. Tilt the recovery tank back to access thesolution tank. Make sure the recovery tank isempty before tilting.

12. Flush the solution tank and rinse the floatsensor located inside the back part of thesolution tank. Rinse the screen filter on thebottom of the tank.

13. Carefully push the recovery tank forward toclose the solution tank.

14. Unhook the seat latch and lower the operatorseat.

15. Clean the front of the solution tank throughthe front access port located under the frontsolution tank cover. Wipe the bottom of thecover and the tank seal before replacing thecover.

OPERATION

19T7 331051 (9--06)

16. Cylinderical scrub head: Remove and cleanthe debris tray. Place the tray back in thescrub head when finished.

17. Replace the solution tank drain hose cap andmount the drain hose back onto the mountingclip after after the tank is drained.

PROPEL SYSTEM TROUBLESHOOTING

The audio alarm (horn) will sound and/or warninglights will come on when a propelling system faultor failure is detected. The machine will stoppropelling when this happens. Refer to the tablebelow to determine the cause for the fault orfailure.

Indicator(s) Cause(s) Remedy

Horn repeatedlybeeps 2 times

Propel pedal depressed withoutoperator in seat

Sit in seat when operating machine


ON/OFF key switch is turned on whilepropel pedal is engaged

Release the propel pedal beforeturning key on


Failure in the Throttle system hasoccurred

Contact Tennant servicerepresentative


Failure in the Brake system hasoccurred



Failure in the Parking Brake systemhas occurred



Emergency Stop Button is engaged Reset Emergency Stop Button


ON/OFF key switch is turned on whilebattery charger is plugged into

machine

Unplug battery charger before startingmachine

Fault Light blinks Propel motor is overloaded Contact Tennant servicerepresentative

OPERATION

20 T7 331051 (11--04)

MACHINE TROUBLESHOOTING

Problem Cause Remedy

Trailing water--poor or not i k

Vacuum fan turned off Turn vacuum fan ong pwater pickup Worn squeegee blades Rotate or replace squeegee blades

Squeegee out of adjustment Adjust squeegee

Vacuum hose clogged Flush vacuum hoses

Vacuum fan filter dirty Clean vacuum fan filter

Vacuum fan cover seals worn Replace seals

Debris caught on squeegee Remove debris

Vacuum hose to squeegee orrecovery tank disconnected ordamaged

Reconnect or replace vacuum hose

Recovery tank cover notcompletely closed

Check for obstructions and closecover

Vacuum fan will not turn on Vacuum fan switch turned off Turn vacuum switch on

Recovery tank full Drain recovery tank

Foam filling recovery tank Empty recovery tankg y

Use less detergent

Recovery tank sensor dirty or stuck Clean or replace sensor

Little or no solution flow toth fl (C ti l

Solution tank empty Fill solution tankthe floor (ConventionalScrubbing Mode)

Solution flow turned off Turn solution flow onScrubbing Mode)

Solution supply lines plugged Flush solution supply lines

OPERATION

21T7 331051 (9--06)

Problem Cause Remedy

Poor scrubbing performance One Step Scrub button not on Turn One Step Scrub button ong p

Improper detergent or brushesused


Recovery tank full Empty recovery tank

Solution tank empty Fill solution tank

Debris caught on scrub brushes orpads

Remove debris

Worn scrub brush Replace scrub brush

Broken or loose brush drive belt(Cylinderical models)

Replace or tighten belt

Brush pressure set too light Increase brush pressure

Low battery charge Charge batteries until the chargerautomatically turns off

FaST System does nott

FaST switch is turned off Turn on the FaST swiitchoperate

Accessory circuit breaker tripped Reset circuit breaker

Clogged FaST--PAK supply hoseand/or connector

Soak connector and hose in warmwater and clean

FaST--PAK carton is empty or notconnected

Replace FaST--PAK carton and/orconnect supply hose

FaST system is not primed To prime, operate the FaST solu-tion system for a few minutes

Clogged filter screen Drain solution tank, remove andclean filter screen

Faulty solution pump Replace solution pump

MAINTENANCE

22 T7 331051 (9--06)

MAINTENANCE

1

1

2

8

3

9

11

5

4

3

6

310

7

10

3

12

13

14

MAINTENANCE

23T7 331051 (9--06)

MAINTENANCE CHART

Interval Key Description ProcedureLubricant/

Fluid

No. ofServicePoints

Daily 1 Side and rear squeegees Check for damage and wear -- 3y q g

Check deflection and leveling -- 6

2 Scrub brushes / pads Check for damage, wear, debris -- 2

8 Recovery tank Clean tank, screen filter, and floatsensor

-- 1

9 Vacuum fan filter Clean -- 1

7 FaST--PAK supply hoseand connector (option)

Clean and connect hose to stor-ing plug when not in use

-- 1

12 Debris tray(Cylinderical brushes)

Clean -- 1

50 Hours 4 Battery cells(Lead acid batteries)

Check electrolyte level DW 3

11 Disk scrub head floor skirt Check for damage and wear -- 2

13 Cylinderical brushes Check taper and rotate front torear

-- 2

100 Hours 3 Vacuum Fan and tankseals

Check for damage and wear -- 3

14 Cylinderical brush drivebelts

Check tension -- 2

200 Hours 4 Battery terminals andcables

Check and clean -- 12

500 Hours 9 Vacuum fan motor(s) Check motor brushes -- 1

5 Scrub brush motors Check motor brushes -- 2

6 Propelling motor Check motor brushes -- 1

10 Tires Check for damage and wear -- 3

LUBRICANT/FLUID

DW Distilled water. . . .

MAINTENANCE

24 T7 331051 (9--06)

BATTERIES

The batteries are designed to hold their power forlong periods of time. The lifetime of the batteriesis limited to number of charges the batteriesreceive. To get the most life from the batteries,recharge them immediately when the batterydischarge indicator begins to blink.

FOR SAFETY: When servicing machine, wearprotective gloves when handling batteries orbattery cables. Avoid contact with batteryacid.

After every 200 hours of use check for loosebattery connections and clean the surface of thebatteries, 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 thebatteries. Use a wire brush to clean the terminalposts and the cable connectors. Wipe off allcleaning solution residue. After cleaning, apply acoating of clear battery post protectant to theterminals and the cable connectors. Keep the topsof the batteries clean and dry.

Objects made of metal can potentially short circuitthe batteries. Keep all metallic objects off thebatteries. Replace any worn or damaged wires.Replace any defective batteries. To dispose ofbatteries, contact a battery dealer or your TennantService representative.

GEL BATTERIES

The Gel batteries are maintenance free and donot need to have the electrolyte level checked.

LEAD ACID BATTERIES

Check the electrolyte level in each battery cellbefore and after charging, and after every 50hours of operation. Never add acid to thebatteries. Add distilled water only. Always keepthe battery caps on, except when adding water ortaking hydrometer readings.

Using a hydrometer, measure the specific gravityto determine the charge level and condition of thebatteries. If one or more of the battery cells testlower 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.

04380

MAINTENANCE

25T7 331051 (9--06)

NOTE: Do not take readings immediately afteradding distilled water. If the water and acid are notthoroughly mixed, the readings may not beaccurate. Check the hydrometer readings againstthe following chart to determine the remainingbattery charge level:

SPECIFIC GRAVITY BATTERY

at 27_ C (80_F) 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 batteryelectrolyte is any temperature other than 27_ C(80_ F), the reading must be temperaturecorrected. Add or subtract to the specific gravityreading 0.004, 4 points, for each 6_ C(10_ F)above or below 27_C(80_ F).

CHARGING THE BATTERIES WITHOFF--BOARD CHARGER

1. Drive the machine to a flat, dry surface.

NOTE: Make sure the area is well ventilated.



3. Tilt the operator seat forward and hook theseat latch into place to hold up the seat

4. Lead acid batteries: Check the water level inall battery cells. If the level is low, add justenough distilled water to cover the plates. DONOT OVERFILL. The batteries can overflowduring charging due to expansion.

NOTE: Make sure the battery caps are in placewhile charging.

FOR SAFETY: When servicing machine, wearprotective gloves when handling batteries orbattery cables. Avoid contact with batteryacid.

5. Plug the charger connector into the machinebattery charging connector.

WARNING: Batteries emit hydrogen gas.Explosion or fire can result. Keepsparks and open flame away. Keepcovers open when charging.

MAINTENANCE

26 T7 331051 (07--07)

6. Plug the battery charger into the wall outlet.

NOTE: If the red “ABNORMAL CYCLE” lamplights when the TENNANT charger is plugged intoa wall outlet, the charger cannot charge thebattery and there is something wrong with thebattery.

07224

7. The TENNANT charger will startautomatically. When the batteries are fullycharged, the TENNANT charger willautomatically turn off.

NOTE: Do not disconnect he charger’s DC cordfrom the machine’s battery charging connectorwhen 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 thecharger from the machine battery chargingconnector.

9. Lead acid batteries: Check the electrolytelevel in each battery cell after charging. Ifneeded, add distilled water to raise theelectrolyte level to about 12 mm (0.4 in) belowthe bottom of the sight tubes.

10. Unhook the seat latch and lower the operatorseat.

ELECTRIC MOTORS

The carbon brushes on the vacuum fan motor, thepropelling motor, and the scrub brush motorsshould be inspected after the initial 500 hours ofmachine operation and then every 100 hours afterthe initial 500 hours.

BELTS (Cylinderical Models)

The two brush drive belts are located on thecylindrical brush scrub head. The belts drive thecylindrical brushes. Proper belt tension is a 6 mm(0.25 in) deflection from a force of 2.3 to 2.5 kg(5.0 to 5.4 lb) at the belt midpoint.

Check and adjust the belt tension every 100 hoursof operation.

MAINTENANCE

27T7 331051 (9--06)

SCRUB BRUSHES AND PADS

The machine can be equipped with either disk orcylindrical scrub brushes, or cleaning pads. Checkscrub brushes daily for wire or string tangledaround the brush or brush drive hub. Also checkfor brushes damage and wear.

DISK BRUSHES

The scrub brushes should be replaced if a largenumber of bristles are missing or if bristle length isless than 10 mm (0.38 in).

Cleaning pads must be placed on pad drivesbefore they are ready to use. The cleaning pad isheld in place by a pad holder.

Cleaning pads need to be cleaned immediatelyafter use with soap and water. Do not wash thepads with a pressure washer. Hang pads, or liepads flat to dry.

NOTE: Always replace brushes and pads in sets.Otherwise one brush or pad will be moreaggressive than the other.

REPLACING DISK BRUSHES OR PAD DRIVER

1. Stop machine on a level surface. Make surethe scrub head is in the raised position.



3. Pull the pin from the side squeegee retainerpivot.

4. Open the side squeegee retainer pivot towardthe front of the machine, then pull the sidesqueegee toward the rear of the machine toaccess the scrub brushes or pads.

MAINTENANCE

28 T7 331051 (9--06)

5. Pull the scrub brush/pad driver downward toremove it from the drive hub.

6. Place the new scrub brush/pad driver onto thedrive hub. Ensure that it is securely mountedonto the brush drive hub.

7. Close the side squeegee and the retainerpivot, then insert the pin.

NOTE: Be sure the pin is inserted completelythrough the bottom.

REPLACING DISK PADS

1. Remove the pad driver from the machine.

2. Squeeze the spring clip together to removethe center disk.

3. Flip or replace the scrub pad, center the scrubpad on the pad driver. Then reinstall thecenter disk to secure the pad in place on thepad driver.

4. Reinsert the pad driver into the machine.

MAINTENANCE

29T7 331051 (9--06)

CYLINDERICAL BRUSHES

Check the brush taper and rotate the brushesfrom front-to-rear every 50 hours of machineoperation for maximum brush life and bestscrubbing performance.

The cylindrical brushes should be replaced if largeamounts of bristles are missing, or if theremaining bristle length is less than 15 mm(0.62 in).

NOTE: Replace worn brushes in pairs. Scrubbingwith brushes of unequal bristle length will result indiminished scrubbing performance.

REPLACING OR ROTATING CYLINDERICAL

BRUSHES




3. Remove the cotter pin that holds the sidesqueegee in place. Swing the squeegee awayfrom the scrub head.

4. Remove idler plate from the scrub head bypressing the spring tab downward.

5. Pull the old brush out of the scrub head.

6. Attach the idler plate to the new or rotatedbrush on the end that has the double row ofbristles. Install the brush.

7. Push down on the door to catch the door inthe scrub head, then pull up on the door tolatch it into the spring.

8. Repeat for the other brush on the other sideof the scrub head

NOTE: Each side of the scrub head is stampedwith a letter. The idler door of that side of thescrub head is stamped with the same letter. Makesure the letter on the door matches the letter onthe scrub head when replacing the doors.

MAINTENANCE

30 T7 331051 (07--07)

CHECKING CYLINDERICAL BRUSH PATTERN

1. Apply chalk, or a similar marking material, to asmooth and level section of the floor.

NOTE: If chalk or other material is not available,allow the brush to spin on the floor for twominutes. A polish mark will remain on the floor.

2. Raise the scrub head, then position thebrushes over the chalked area.

3. Block the front or rear wheels to prevent themachine from moving.

4. Lower the scrub head in the chalked area.Slowly press down on the directional pedaluntil the brushes begin to sweep. Allow themachine to sweep in the same place for 15 to20 seconds.

5. Raise the scrub head and drive the machineaway from the chalked area.


6. Observe the brush patterns. If the brushpattern is the same width across the entirelength of each brush and both brushes are thesame width, no adjustment is necessary.

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7. If the brush patterns are tapered, seeADJUSTING CYLINDERICAL BRUSHTAPER section of this manual.

10652

8. If the width of the brushes is not the same,see ADJUSTING CYLINDERICAL BRUSHWIDTH section of this manual.

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ADJUSTING CYLINDERICAL BRUSH TAPER





3. Remove the cotter pin that holds the sidesqueegee in place. Swing the squeegee awayfrom the scrub head.

MAINTENANCE

31T7 331051 (9--06)

4. Remove idler plate from the scrub head bypressing the spring tab downward.

5. While holding the flat end of the idler shaftwith a wrench, loosen the mounting screw onthe outside of the idler door.

6. Turn the idler shaft to raise or lower the end ofthe brush as needed to straighten the brushpattern. Tighten the mounting screw.

7. Check the brush patterns again and readjustas necessary until both patterns are thesame.

ADJUSTING CYLINDERICAL BRUSH WIDTH

1. Stop machine on a level surface. Make surethe scrub head is in the lowered position.



3. Loosen the two scrub head mounting screws.

4. Loosen the jam nut, then adjust the brushwidth adjustment screw. Tighten the jam nutand the two scrub head mounting screwswhen finished.

5. Check the brush patterns again and readjustas necessary until both brush patterns are thesame.

MAINTENANCE

32 T7 331051 (9--06)

REPLACING THE FaST--PAK (FaST Model)

1. Stop machine on a level surface.

2. Turn off the machine ON/OFF key switch.


3. Open the FaST--PAK compartment door andslide the empty FaST--PAK approximately halfway out from the FaST--PAK compartmentdoor.

4. Squeeze the button on the FaST supply hoseconnector, then pull the empty FaST--PAK outfrom the compartment.

5. Remove the perforated knock outs from thenew FaST--PAK carton. Do Not remove thebag from the carton. Pull out the hoseconnector located on the bottom of the bagand remove the hose cap from the connector.

NOTE: The FaST--PAK Floor CleaningConcentrate is specially designed for use with theFaST system scrubbing application. NEVER use asubstitute. Other cleaning solutions may causeFaST system failure.

6. Insert the new FaST--PAK approximately halfway into the FaST--PAK compartment.

7. Connect the FaST--PAK hose connector tothe FaST supply hose connector, slide theFaST--PAK the rest of the way into theFaST--PAK compartment, and close theFaST--PAK compartment door.

8. When replacing an empty FaST--PAK carton,you must scrub with the FaST system for afew minutes before the detergent will reach itsmaximum foaming.

FaST SUPPLY HOSE CONNECTOR

The FaST supply hose connector is located belowthe FaST--PAK holder. Soak the connector inwarm water if detergent buildup is visible. When aFaST--PAK carton is not installed, store the supplyhose connector on the storing plug to prevent thehose from clogging.

MAINTENANCE

33T7 331051 (11--04)

SQUEEGEE BLADES

The side squeegees control water spray andchannel water into the path of the rear squeegee.The side squeegee blades are not adjustable.

The rear squeegee assembly channels water intothe vacuum fan suction. The front blade channelsthe water and the rear blade wipes the floor.

Check the squeegee blades daily for damage andwear. Rotate or replace the squeegee blades ifthe leading edge is torn or worn half-way throughthe thickness of the blade. Replace the sidesqueegee deflectors if they become worn.

The rear squeegee can be adjusted for levelingand deflection. The deflection and leveling of thesqueegee blades should be checked daily, orwhen scrubbing a different type of floor.

The rear squeegee assembly can be removedfrom the squeegee pivot to prevent damageduring transport of the machine.

REPLACING (OR ROTATING) THE REARSQUEEGEE BLADES




3. Remove the squeegee suction hose from therear squeegee assembly. Then loosen bothrear squeegee assembly mounting knobs.

4. Pull the rear squeegee assembly from themachine.

5. Loosen the rear squeegee retaining bandtension latch and remove the retaining band.

6. Remove rear squeegee blade from the rearsqueegee assembly.

7. Loosen the two outer knobs on the rearsqueegee assembly. Remove the frontsqueegee blade from the squeegee assembly.

MAINTENANCE

34 T7 331051 (11--04)

8. Install the new front squeegee blade or rotatethe existing blade to the new edge. Be surethe holes in the front squeegee blade arehooked onto the tabs on the front bladeclamp.

9. Lightly tighten the two outer knobs.

10. Install the new rear squeegee blade or rotatethe existing blade to the new edge. Be surethe holes in the squeegee blade are hookedonto the tabs on the squeegee assembly.

11. Reinstall the rear squeegee retaining bandonto the squeegee assembly. Be sure each ofthe flanges on the retaining band are seatedin the cut outs in the rear squeegee assembly.

12. Tighten the rear squeegee retaining bandtension latch.

13.Reinstall the rear squeegee under thesqueegee mount bracket and tighten all fourknobs.

14. Reinstall the squeegee suction hose onto therear squeegee assembly.

MAINTENANCE

35T7 331051 (9--06)

REPLACING SIDE SQUEEGEE BLADES

1. Open the side squeegee.

2. Pull the old side squeegee blade from the sidesqueegee retainer. Slide the new blade ontothe retainer.

3. Close the side squeegee.

ADJUSTING THE SQUEEGEE GUIDE ROLLER

The squeegee guide rollers are located on bothends of the rear squeegee. The rollers guide thesqueegee blade end along a wall. Loosen the nutlocated at the top of the guide roller and move theroller in or out to adjust how close the end of thesqueegee blade is to the wall. The squeegeeblade end should be further away from the wallwhen the floor curves up into the wall.

LEVELING THE REAR SQUEEGEE

Leveling of the squeegee assures the entirelength of the squeegee is in even contact with thesurface being scrubbed. Perform this adjustmenton an even and level floor.

1. Lower the squeegee and drive the machineforward a few feet.



3. Look at the deflection of the squeegee overthe full length of the squeegee blade.

4. If the deflection is not the same over the fulllength of the blade, turn the squeegee levelingbolt to make adjustments.

The squeegee leveling bolt is located directlybehind the squeegee suction hose. DO NOTdisconnect the suction hose from thesqueegee frame when leveling squeegee.

Turn the squeegee leveling boltcounter-clockwise to increase the deflection atthe ends of the squeegee.

Turn the squeegee leveling bolt clockwise todecrease the deflection at the ends of thesqueegee blade.

5. Drive the machine forward with the squeegeedown to recheck the squeegee bladedeflection if adjustments were made.

6. Readjust the squeegee blade deflection ifnecessary.

MAINTENANCE

36 T7 331051 (11--04)

ADJUSTING REAR SQUEEGEE BLADEDEFLECTION

Deflection is the amount of curl the overallsqueegee blade has when the machine movesforward. The best deflection is when thesqueegee wipes the floor dry with a minimalamount of deflection.

1. Lower the squeegee and drive the machineforward a few meters (feet).



3. Look at the amount of deflection or “curl” ofthe squeegee blade. The correct amount ofdeflection is 12 mm (0.50 in) for scrubbingsmooth floors and 15 mm (0.62 in) for roughfloors.

03719

12 mm(0.50 in)

4. If the overall squeegee blade deflection needsto be adjusted, loosen the jam nuts on thesqueegee casters and adjust the height.

5. Drive the machine forward again to recheckthe squeegee blade deflection afteradjustments are made.

6. Readjust the squeegee blade deflection ifnecessary.

MAINTENANCE

37T7 331051 (9--06)

SKIRTS AND SEALS

DISK SCRUB HEAD FLOOR SKIRT

The skirt is located in front of the disc brush scrubheads. Check the skirt for damage and wear afterevery 50 hours of operation.

The skirts should clear the floor by 0 to 6 mm(0 to .25 in) when the scrub brushes are new andthe scrub head is down.

RECOVERY TANK SEAL

The recovery tank seal is located on the bottom ofthe recovery tank cover. Check the seal fordamage and wear after every 100 hours ofoperation.

SOLUTION TANK SEALS

There are two solution tank seals. Check the sealfor damage and wear after every 100 hours ofoperation.

A front seal is located on the bottom of thesolution tank cover. A rear seal is located on thebottom of the recovery tank.

TIRES

The machine has three solid rubber tires: one tireis front and two are in the rear. Check the tires fordamage and wear after every 500 hours ofoperation.

MAINTENANCE

38 T7 331051 (9--05)

PUSHING, TOWING, AND TRANSPORTINGTHE MACHINE

PUSHING OR TOWING THE MACHINE

If the machine becomes disabled, it can bepushed from the front or rear, but only tow it fromthe front.

FOR SAFETY: When servicing machine, donot push or tow the machine on inclines withthe brake disabled.

Before attempting to push or tow the machine,disconnect the propel motor harness anddisengage the brake.

ATTENTION! Do not push or tow machinewith the motor harness connected or thecontrol board may fail.

To disengage the brake, insert the tip of a smallscrew driver between the electronic brake leverand the hub.

Only push or tow the machine on a level surface.Do not exceed 3.2 kp/h (2 mph). It is NOTintended to be pushed or towed at a high speed.

Immediately after pushing the machine, removethe screw driver to enable the parking brake andreconnect the propel motor harness. Neveroperate the machine with the brake disabled.

FOR SAFETY: Do not operate machine withthe brake disabled.

TRANSPORTING THE MACHINE

When transporting the machine by trailer or truck,be certain to follow the tie--down procedure below:

1. Raise the squeegee and scrub head.

2. Load the machine using a recommendedloading ramp.

FOR SAFETY: When transporting machine,use a recommended ramp when loading/unloading into/off truck or trailer.

3. Position the front of machine against the frontof the trailer or truck.

4. Lower the scrub head and squeegee after themachine is positioned on the trailer or truck.

5. Place a block behind each wheel to preventthe machine from rolling.

6. Route the front tie--down straps through thestabilizer arms and then secure the tie--downsto the trailer or truck to prevent the machinefrom tipping.

NOTE: It may be necessary to install tie-downbrackets to the floor of the trailer or truck.

FOR SAFETY: When transporting machine,use tie--down straps to secure machine totruck or trailer.

7. Route the rear tie--down straps through theopening at the center part of the rear axle.

MAINTENANCE

39T7 331051 (11--04)

MACHINE JACKING

Empty the recovery and solution tanks beforejacking the machine. Jack up the machine forservice at the designated locations. Use a hoist orjack capable of supporting the weight of themachine. Always stop the machine on a flat, levelsurface and block the tires before jacking up themachine.

Front jacking locations are located on both sidesof the machine.

Rear jacking locations are located on both sides ofthe machine at the axles.

FOR SAFETY: Before leaving or servicingmachine, stop on level surface.

FOR SAFETY: When servicing machine, blockmachine tires before jacking machine up. Usea hoist or jack that will support the weight ofthe machine. Jack machine up at designatedlocations only. Block machine up with jackstands.

STORAGE INFORMATION

The following steps should be taken when storingthe machine for extended periods of time.

1. Drain and clean the solution and recoverytanks. Open the recovery tank cover topromote air circulation.

2. Park the machine in a cool, dry area. Do notexpose the machine to rain. Store indoors.

3. Remove the batteries, or charge them everythree months.

FREEZE PROTECTION

1. Be sure the solution tank is empty.

2. Pour 3.8 L (1 gal) of pre-mixedautomotive-type windshield washer solutioninto the solution tank.

3. FaST models: Remove the FaST--PAK andstore in temperatures above freezing.

4. Turn the machine power on.

5. Run the solution flow for about 15 seconds inthe conventional mode and about 30 secondsin the FaST mode.

6. The washer solution does not need to bedrained from the solution tank.

TENNANT T7 SCRUBBER DRYER OPERATOR MANUAL · TENNANT T7 SCRUBBER DRYER OPERATOR MANUAL Clemas & Co....

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Transcript of TENNANT T7 SCRUBBER DRYER OPERATOR MANUAL · TENNANT T7 SCRUBBER DRYER OPERATOR MANUAL Clemas & Co....