BETCO STEALTHASD20BT Product manual

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20” Automatic Scrubber
with Traction Drive
STEALTH™ASD20BT
E87028-00
E88063-00
1001 Brown Avenue • Toledo, Ohio 43607-0127
Customer Service: 888-GO-BETCO • Fax: [phone] • Technical Service: 877-856-5954 • www.betco.com
Operator and Parts
Manual
Scan this QR code to view
operator training video

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TABLE OF CONTENTS
RECEIVING THE MACHINE........................................3 - 4
GENERAL SAFETY REGULATIONS................................. 5
MACHINE PREPARATION........................................6 - 12
OPERATION ..........................................................13 - 14
TURNING OFF THE MACHINE ...................................... 15
DAILY MAINTENANCE............................................16 -17
WEEKLY MAINTENANCE.............................................. 18
TROUBLESHOOTING ................................................... 19
BRUSH AND SELECTION USE...................................... 19
PARTS DIAGRAMS AND LISTINGS.......................20 - 39
ELECTRICAL SYSTEM...........................................40 - 42
BATTERY CHECK CARD – HOUR METER..................... 43
HYDRAULIC PLANT INSPECTIONS.............................. 43
VACUUM SYSTEM INSPECTION.................................. 44
BRUSH BASE ADJUSTMENT ....................................... 45
BRAKE ADJUSTMENT.................................................. 45
SQUEEGEE ADJUSTMENT ........................................... 46
CHECK LIST ................................................................. 46
MAINTENANCE SCHEDULE AND WEAR ITEMS........... 47
WARRANTY ................................................................. 48

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Immediately check, when receiving the machine, that all the materials indicated on delivery documents have been received and
also that the machine has not been damaged in transit. If it has been damaged, this damage must be immediately reported to
the shipper and also to our customer’s service department. Only acting promptly in this manner will make it possible to receive
missing material and to be compensated for damage.
INTRODUCTION
This is an automatic scrubber which, via the mechanical action of
the rotating brush and the chemical action of a water/detergent solu-
tion, can clean many types of hard flooring. As it advances, it also
collects the dirt removed and the detergent solution not absorbed by
the floor.
The machine must be used only for this purpose. Even the best
machines will only work well if used correctly and kept in good
working order. We therefore suggest you read this instruction book-
let carefully and re-read it whenever difficulties arise while using the
machine. Please contact our technical service department or your
dealers if you have any questions about the machine.
RECEIVING THE MACHINE
Serial # Plate
SYMBOLS USED ON THE MACHINE
Battery charge gauge
Battery symbol
Open book symbol
Used to tell the operator to read the manual before
using the machine
Maximum solution temperature gauge
Located near the solution tank inlet

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Rated power HP (W) 1.5 (1100)
Working width In (mm) 19.7 (500)
Rear squeegee width In (mm) 29.2 (742)
Work capacity ft2/h (m2/h) 22,050 (1450)
Water consumption g/m2 38
Brush & Pad (diameter) in (mm) 20 (500)
Brush RPM RPM 140
Brush pressure lb. (Kg) 51 (23)
Brush motor V / HP (V / W) 24 / 0.54 (24 / 400)
Drive Type Automatic
Traction motor V / HP (V / W) 24 / 0.20 (24 / 400)
Forward movement speed mph (km/h) 2.5 (4)
Maximum grade 10%
Vacuum motor V / HP (V / W) 36 / 0.74 (36 / 550)
Vacuum motor suction inches of water (mbar) 75.6 (188)
Solution tank capacity Gal (l) 11 (40)
Recovery tank capacity Gal (l) 13 (50)
Weight of machine (excluding batteries) lb. (Kg) 210 (95)
Batteries V / Ah 12 / 130 (2)
Charger V / A 24 / 12
Battery compartment dimensions (Length / Height / Width) in x in x in 14.2 x 12.8 x 13.0
(mm/mm/mm) (360 /325 /330)
Machine dimensions (Length / Height / Width) in x in x in 45.3 x 39.4 x 20.9
(mm/mm/mm) (1150 / 1000 / 530)
Noise level dBA 58
TECHNICAL DESCRIPTION Measurement Unit Stealth™ASD20BT

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The regulations below must be carefully followed in order to avoid harm to the operator and damage to the machine.
• Readalllabelsonthemachinecarefully.Donotcoverthemforanyreasonandreplacethemimmediatelyiftheybecome
damaged.
• Themachinemustbeusedexclusivelybyauthorizedandtrainedpersonnel.
• Whenoperatingthemachinebecarefulofotherpeople.
• Themachineisnotdesignedforcleaningcarpets.
• Thepowercableoutletmustbeprovidedwithaproperground.
• Avoiddamagingthepowercableofthebatterychargerbycrushing,bending,cuttingorstressingit.
• Wheneverthepowercableofthebatterychargerisdamaged,immediatelycontactaBETCOservicecenter.
• Donotmixdifferenttypesofdetergentasthismayproduceharmfulgases.
• Donotsetcontainersonthemachine.
• Machinestoragetemperatureisbetween-10°Fand130°F,neverstoreoutsideunderhumidconditions.
• Operatingconditions:roomtemperaturebetween33°Fand100°Fwithrelativehumiditybetween30%to95%.
• Onlyusethemachineinclosedareasanddonotexposeitdirectlytorain.
• Neverusethemachineinanexplosiveenvironment.
• Donotusethemachineasameansoftransport.
• Neveruseacidicchemicalswhichcoulddamagethemachine.
• Avoidrunningthebrusheswiththemachinestopped;thiscoulddamagetheoor.
• Nevervacuumupammableliquids.
• Neverusethemachinetogatherdangerouspowders.
• Useapowderreextinguisherincaseofre.Donotusewater.
• Donothitagainstshelvingorscaffolding.Theoperatormustalwaysbeequippedwiththeappropriatesafetydevice
(gloves, shoes, helmet, glasses, etc.)
• Donotusethemachineonsurfaceswithaninclinationgreaterthantheoneshownontheserialplate.
• Themachineisdesignedtowashanddryoorssimultaneously.Signalthepresenceofwetoorswithsuitablesigns.
• Ifthemachinedoesnotworkproperly,performroutinemaintenance.Otherwise,requesttheassistanceoftheBETCOtech-
nical service.
• WhenreplacingpartsaskforORIGINALsparepartsfromyourAuthorizedBETCODealerand/orRetailer.
• Alwaysturnoffthemachineanddisconnectthebatteryconnectorwhenevermaintenanceisperformed.
• Neverremoveguardsthatrequiretoolsforremoval.
• Never wash the machine with direct or pressurized jets of water or with corrosive substances.
• HaveyourBETCOservicecentercheckthemachineonceayear.
• Topreventtheformationofscaleinthesolutiontanklter,donotstorethemachinewithdetergentsolutioninthetanks.
• Beforeusingthemachinemakesurethatalldoorsandcoversarepositionedasshowninthisoperatingandmaintenance
manual.
• WhenyourBETCOmachineisreadytoberetired,themachinemustbedisposedofproperly.Itcontainoilsandelectronic
components. The machine was built using totally recyclable materials.
• Useonlybrushesfurnishedwiththemachineorthosespeciedintheuser'smanual.Useofotherbrushescancompro-
mise safety.
• Whenremovingthebattery,unplugthebatteryconnection,unplugthechargeranddisconnectthebatteryterminals.
• Beforerecyclingthemachine,removethebattery.
GENERAL SAFETY REGULATIONS

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1. HANDLING THE PACKED MACHINE
The machine is contained in specific packaging.
It is not possible to place more than two packages on top of each other.
The total weight is 220 lb. (100 kg).
Theoveralldimensionsofthepackageare:
 A:45.1in(1145mm)
 B:26.2in(665mm)
 C:48.4in(1230mm)
2. HOW TO UNPACK THE MACHINE
A. Remove the outer packaging.
B. The machine is fixed to the pallet with wedges which lock the wheels.
C. Remove these wedges.
D. Use a ramp to get the machine down from the pallet, pushing it backwards.
E. Keep the pallet for any future transport needs.
MACHINE PREPARATION

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3. BATTERY INSTALLATION
The machine will be supplied with a battery charger and either two 12V Wet or
AGM batteries. The batteries must be housed in the battery tray in the battery
compartment beneath the recovery tank.
Toinsertthebatteriesyoumust:
A. Lower the squeegee and brush deck.
B. Open the rear latch that secures the recovery tank (2).
C. Rotate the recovery tank as far as it will go, using the side handle (3).
WARNING: To avoid acid leakage you can use sealed batteries.
WARNING: Perform one battery charging cycle before using the
machine.
4. TYPE OF BATTERY
Topowerthemachineyoucanuse:
• Wetbatteries
• AGMbatteries
• Gelbatteries
OTHER TYPES MUST NOT BE USED.
Themaximumdimensionsandtheweightare:
Width 6.7 in (171 mm)
Length 12.9 in (329 mm)
Height 9.6 in (245 mm)
Weight 68 lb. (31 kg)
WARNING: Your charger must be set according to the type of bat-
tery you install. Call BETCO customer service to ensure correct
charger setting after replacement batteries are installed.
• Thebatteriesmustbehandledusingliftingandtransportationmeanssuitable
for the weight and dimensions.
• Theymustbeliftedbythehandlesontheupperpart.
• Theymustbeconnectedtogetherinseries,toobtainanoverallvoltageof
24V on the lugs.
• Theelectricalconnectionoperationsmustbecarriedoutbycertiedtrained
personnel.
MACHINE PREPARATION

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5. BATTERY MAINTENANCE
For maintenance and recharging, follow the instructions provided by the battery
manufacturer.
6. BATTERY DISPOSAL
When the battery reaches the end of its working life, it must be disconnected by
certified professional, and removed from the battery compartment.
7. CONNECTING THE BATTERY CHARGER
Beneath the recovery tank there is the battery connector (7), the battery charger
connector must be plugged into. Disconnect the battery plug and plug the
charger into the machine plug.
WARNING: This process must be carried out by qualified person-
nel. The incorrect or imperfect connection of the cables to the
connector can seriously harm people and damage objects.
8. RECHARGING THE BATTERIES
Perform one complete battery charge cycle before using the machine.
Avoid totally discharging the batteries! This can cause permanent damage to
them. Recharge as soon as the battery discharged signal light starts to flash.
WARNING: Never leave the batteries completely discharged, not
even if the machine is not being used. This can cause perma-
nent damage to them. While recharging, keep the recovery tank
raised. Ensure the battery charger is suitable for the batteries
installed.
Danger of inhalation of gas and leakage of corrosive liquids.
Danger of fire: do not go near flames.
MACHINE PREPARATION

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9. CONNECTING THE BATTERY CONNECTOR
Connect the battery connector (2) to the machine connector (1)
10. BATTERY INDICATOR
The battery indicator uses LEDs and has 8 positions (7 yellow - charged batter-
ies, and 1 red - run down batteries).
WARNING: A few seconds after the red indicator light comes on,
the brush motor switches off automatically. With the remain-
ing charge it is possible to complete the drying process before
recharging.
MACHINE PREPARATION

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11. INSTRUMENT PANEL COMPONENTS
Theinstrumentpanelcomponentsareidentiedasfollows:
A. Levers to activate brushes / traction (located beneath the handlebar)
B. ON/OFF key switch
C. Battery level / hour-counter display
D. Traction speed control knob
12. REAR COMPONENTS
Therearcomponentsareidentiedasfollows:
A. Foot pedal to raise the brushes
B. Water / solution level hose
C. Drain hose with recovery tank cap
D. Latch to close the tanks
E. Compartment storage
F. Lever to raise the squeegee
G. Solution filter
13. SIDE COMPONENTS
Thesidecomponentsareidentiedasfollows:
A. Valve for manual regulation of clean water flow
B. Handle to raise the recovery tank
C. Handle to raise the vacuum unit
D. Upper storage compartment
E. Brake lever
14. ASSEMBLING THE SQUEEGEE
For packaging reasons, the squeegee is supplied dismounted from the machine,
andmustbeassembledasfollows:
A. Insert the two small pins of the squeegee in the appropriate holes on the
squeegee yoke.
B. Insert the two cotter pins chained to the squeegee shoe.
C. Attach the squeegee vacuum hose over the squeegee shoe adapter.
MACHINE PREPARATION

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MACHINE PREPARATION
15. ADJUSTING THE SQUEEGEE HEIGHT
The height of the squeegee must be adjusted based on wear of the squeegee
blade. To do this, turn the knobs (2) counter clockwise to raise the squeegee,
and clockwise to lower it.
Note: the right and left wheels must be adjusted to the same level, so the
squeegee can work parallel to the floor.
16. ADJUSTING THE SQUEEGEE INCLINATION
During operation, the rear squeegee blade is slightly tilted backwards (by about
0.2 in. (5 mm) in a uniform way over entire length. If it is necessary to increase
the bend of the squeegee blade in the center, you must tilt the squeegee back-
wards, rotating the adjuster (1) counter clockwise. To increase the bend of the
squeegee blade at the outside edges of the squeegee, rotate the adjuster clock-
wise. When fully adjusted, tighten the jam nut.
17. RECOVERY TANK
Check the drain hose cap (on the rear of the machine) to ensure it’s closed.

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18. SOLUTION TANK
Remove the front inlet cap and check the solution filter is correctly installed.
Check the filter cap (beneath the solution tank, at the back) is correctly closed.
19. SOLUTION TANK
Fill the tank with clean water in the front fill location (1) at a temperature not ex-
ceeding120°F(50°C).Youcancheckthelevelofsolutioninthetankbymeans
of the rear hose (2).
Add liquid detergent into the tank, in the concentration and manner specified
by the manufacturer. The formation of excess foam could damage the vacuum
motor, so be sure to use only the correct amount of detergent.
WARNING: Always use low-foam detergent. Introduce a small
amount of defoaming liquid in the recovery tank before starting
work to prevent foam from being generated.
WARNING: Never use pure acids.
20. ASSEMBLING THE BRUSH
A. With the brush deck up, place the brush and center it under the brush deck.
B. Lower the brush deck, turn the key (1) to position “1”, pull the switch levers
(2) on the handlebars.
The brush in now installed.
WARNING: Make sure there are no objects or people in the vicin-
ity of the brush when doing this operation.
MACHINE PREPARATION

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1. MACHINE OPERATION
A. Connect the battery plug to the machine plug.
B. Turn the key (1) of the main switch to the "ON" position (clockwise). The bat-
tery charge level indicator lights will immediately come on.
C. Turn on the water valve (2) (the water dispenses automatically when the
brush is turning).
D. Release the foot lever (3) and lower the brush deck.
E. Lower the squeegee by rotating the squeegee lift handle (4) counter clock-
wise. The vacuum motor will turn on.
F. Check that the brake (5) is released.
G. Pulling the switch levers (1), activates the brush and the machine begins to
move. During the first few feet, check that the amount of solution dispensed
is correct, and that the squeegee dries the floor.
H. The machine will now start to scrub and dry until the solution tank is empty
or recovery tank is full.
OPERATION

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2. REVERSE MOVEMENT
To move the machine in reverse push the switch levers (1) forward.
WARNING: When moving the machine in reverse, raise the
squeegee.
3. OVERFLOW DEVICE
The machine has a float in a filter basket that trips when the recovery tank is
full to stop airflow into the vacuum hose.
At this point empty the recovery tank by removing the cap of the drain hose.
WARNING: Always wear gloves when doing this
operation to protect yourself from contact with hazardous
chemicals.
OPERATION

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1. END OF WORK
When shutting down the machine and before you perform any type of mainte-
nance:
A. Turn off the solution control valve (1)
B. Raise the brush deck using the foot pedal (2)
C. Raise the squeegee using the squeegee lift lever (3)
D. Turn off the key switch (4)
E. Move the machine where the tanks can be drained.
F. Removethedrainhosefromit'shook,removethedraincapandemptythe
recovery tank.
G. The squeegee must be raised when the machine is not operating, to avoid
deforming the squeegee blades.
H. Disassemble the pads and clean them with water.
WARNING: Always wear gloves when doing this operation to pro-
tect yourself from contact with hazardous chemicals.
SHUTTING DOWN THE MACHINE

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1. CLEANING THE RECOVERY TANK
A. Raise the vacuum cover (1).
B. Remove the drain hose (2)fromit'shookandemptythetank.
C. Rinse the inside of the tank with water.
D. Close the cover on the machine and replace the drain hose cap and drain
hose.
WARNING: Always wear gloves when doing this operation to pro-
tect yourself from contact with hazardous chemicals.
2. CLEANING THE VACUUM FILTER
A. Raise the cover.
B. Remove the vacuum filter cover by rotating it clockwise.
C. Pull the filter straight down from the lid to remove it.
D. Use water to clean the walls and base of the filter.
E. Reassemble all the components.
WARNING: Always wear gloves when doing this operation to pro-
tect yourself from contact with hazardous chemicals.
3. CLEANING THE VACUUM HOSE FILTER
A. Raise the vacuum cover.
B. Rotate the inner filter (1) and remove it.
C. Use water to clean the walls and base of the filter.
D. Reassemble all the components.
WARNING: Always wear gloves when doing this operation to pro-
tect yourself from contact with hazardous chemicals.
DAILY MAINTENANCE

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4. CLEANING THE SQUEEGEE
Toclean:
A. Remove the vacuum hose from the squeegee shoe adaptor.
B. Loosen the knobs (1) at the squeegee shoe adapter.
C. Remove and clean the squeegee shoe adapter.
D. Carefully clean inside the squeegee shoe.
E. Carefully clean the squeegee blades.
F. Reassemble all the squeegee components.
5. MOVING THE PAD DRIVER
Toremovethepaddriver:
A. Turn on the machine with the key switch.
B. Press the foot pedal that raises and lowers the brush deck, and slightly raise
the pad off the floor (1).
C. Pull the switch levers (2) then release them immediately.
D. The pad driver will be automatically release from the brush deck.
6. REPLACING THE SQUEEGEE BLADES
Check the wear of the squeegee blades and, if necessary, replace them.
Toreplacethem:
A. Remove the vacuum hose from the squeegee shoe adapter.
B. Remove the cotter pins that mount the squeegee shoe.
C. Remove the squeegee shoe from the squeegee yoke.
D. Loosen the wing nuts (1).
E. Remove the squeegee band clamp and squeegee blade.
F. Replace the squeegee blades.
To reassemble the squeegee, repeat the operations in the reverse order.
WARNING: Always wear gloves when doing this operation to pro-
tect yourself from contact with hazardous chemicals.
DAILY MAINTENANCE

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1. CLEANING THE SQUEEGEE HOSE
Every week, or whenever vacuum seems to be unsatisfactory, check the squee-
geehoseforobstructions.Tocleanit:
A. Remove the vacuum hose from the squeegee shoe adapter on the squeegee
shoe.
B. Remove the other end from the recovery tank.
C. Wash the inside of the hose with water from the end that it is connected to
the tank.
D. Reassemble the hose.
WARNING: Always wear gloves when doing this operation to pro-
tect yourself from contact with hazardous chemicals.
2. CHECKING THE BRAKE
Every week, check the distance between the work brake pads and the wheels. If
necessary, adjust so they are at a distance of 0.12 in (3 mm) when released.
3. CLEANING THE SOLUTION TANK
A. Remove the solution tank cap.
B. Rinse with water.
C. Remove the drain cap (1) located on the filter, and empty the tank.
WARNING: Always wear gloves when doing this operation to pro-
tect yourself from contact with hazardous chemicals.
WEEKLY MAINTENANCE

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INSUFFICIENT WATER ON THE PAD
1. Check the valve – located beneath the symbol – (1) is turned on.
2. Check there is water in the solution tank.
THE MACHINE DOES NOT CLEAN WELL
1. Check the wear of the scrubbing pad and, if necessary, replace it.
THE SQUEEGEE DOES NOT DRY WELL
1. Check that the squeegee blades are clean.
2. Adjust the inclination of the squeegee.
3. Ensure the vacuum hose is correctly inserted in its housing in the recovery
tank.
4. Check the inner filter inside the recovery tank to ensure that it is clean and, if
necessary, clean it thoroughly.
5. Disassemble the entire vacuum unit and clean it.
6. Replace the squeegee blades, if worn.
7. Check squeegee wheel adjustment.
TOO MUCH FOAM IS GENERATED
Check that low-foam detergent is being used. If necessary add a small amount of defoamer liquid to the recovery tank.
Remember that more foam is generated when the floors are not very dirty. Dilute the detergent more when cleaning floors that
are not very dirty.
TROUBLESHOOTING GUIDE
POLYPROPYLENE BRUSH (PPL)
Usedonalltypesofoors.Goodresistancetowearandtear,andhotwater(nogreaterthan140°F(60°C)).
NYLON BRUSH
Usedonalltypesofoors.Excellentresistancetowearandtearandhotwater(evenover140°F(60°C)).
ABRASIVE BRUSH
The bristles of this type of brush are coated with highly aggressive abrasives. It is used to clean very dirty floors.
THICKNESS OF THE BRISTLES
Thicker bristles are more rigid and are therefore used on smooth floors or floors with small joints. On uneven floors or those with
deep joints, it is advisable to use softer bristles which can enter the gaps easier. Remember that when the bristles are worn and
too short, they will become rigid and are no longer able to penetrate and clean deep and cause the brush to bounce.
PAD DRIVER
Apaddriverisrecommendedforcleaningsmoothsurfaces.Therearetwotypesofpaddrivers:
1. The traditional pad holder is fitted with a series of anchor points that allow the abrasive floor pad to be held while working.
2. The CENTER LOCK type pad holder not only has anchor points, but also a snap-type central locking system made of plastic
that allows the abrasive floor pad to be centered and held without any risk of it becoming detached.
CHOOSING AND USING THE BRUSHES

20
BRUSH DECK DIAGRAM