Betco E8976900, E8977000 User Manual

E89606-00 E89770-00
E89769-00

20” Automatic Scrubber

STEALTH™ ASO20BT

with Traction Drive

Operator and Parts

Manual

400 Van Camp Road • Bowling Green, Ohio 43402

Customer Service: 888-GO-BETCO • Fax: [phone] • Technical Service: 877-856-5954 • www.betco.com

1

TABLE OF CONTENTS

RECEIVING THE MACHINE........................................3 - 4

GENERAL SAFETY REGULATIONS ................................. 5

MACHINE PREPARATION ........................................6 - 13

RECEIVING THE MACHINE

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 If it has been damaged, this damage must be immediately reported to
the shipper and also to our customer’s service department or a claim may not be made.

Serial # Plate

INTRODUCTION

This is an automatic scrubber which, via the mechanical action of
the oscillating pad and the chemical action of a water/detergent
solution, can clean and strip many types of hard flooring. As it ad­vances, it also collects the dirt removed and the detergent solution
not absorbed by the floor.

OPERATION ..........................................................14 - 15

SHUTTING DOWN THE MACHINE ................................ 16

DAILY MAINTENANCE ............................................ 17 -18

WEEKLY MAINTENANCE .............................................. 19

TROUBLESHOOTING ................................................... 20

PAD SELECTION AND USE ........................................... 20

MAINTENANCE SCHEDULE.......................................... 21

WEAR ITEMS LISTING ................................................. 22

PARTS DIAGRAMS AND LISTINGS .......................24 - 43

ELECTRICAL SYSTEM...........................................44 - 45

BATTERY CHECK CARD – HOUR METER ..................... 46

SOLUTION TANK INSPECTIONS .................................. 47

VACUUM SYSTEM INSPECTION .................................. 47

BRAKE ADJUSTMENT .................................................. 48

SQUEEGEE ADJUSTMENT ........................................... 48

CHECK LIST ................................................................. 49

Only use this machine for its intended purpose. Please keep
the machine in good working order by preforming routine
maintenance. Read this instruction manual and refer back
to it when machine questions arise. Our technical customer
service representatives should be contacted when machine
questions are not answered by this manual.

SYMBOLS USED ON THE MACHINE

WARRANTY ................................................................. 52

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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GENERAL SAFETY REGULATIONS

TECHNICAL DESCRIPTION Measurement Unit Stealth™ ASO20BT

Rated power HP (W) 1.44 (1074)

Working width In (mm) 20 (508)

Rear squeegee width In (mm) 30 (762)

Work capacity ft2/h (m2/h) 20,000 (1,858)

Water consumption g/m2 38

Pad (width) in (mm) 20 (508)

Motor RPM RPM 2,000

Pad pressure lb. (Kg) 110 (50)

Deck motor V / HP (V / W) 24 / 0.91 (24 / 680)

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) 24 / 0.42 (24 / 310)

Vacuum motor suction inches of water (mbar) 75.6 (188)

Solution tank capacity Gal (l) 10.5 (40)

Recovery tank capacity Gal (l) 13 (50)

Weight of machine (excluding batteries) lb. (Kg) 285 (129)

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 43 x 39 x 21

(mm/mm/mm) (1090 / 990 / 530)

Noise level dBA 64 / 62 Eco Mode

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 floor.

• Never vacuum up flammable liquids.

• Never use the machine to gather dangerous powders.

• Use a powder fire extinguisher in case of fire. 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 floors simultaneously. Signal the presence of wet floors with suitable signs.

• If the machine does not work properly, perform routine maintenance. Otherwise, request the assistance of the BETCO tech­nical 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 filter, 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 contains oils and electronic
components. The machine was built using totally recyclable materials.

• Use only pads furnished with the machine or those specified in the user's manual. Use of other pads can compromise
safety.

• When removing the battery, unplug the battery connection, unplug the charger and disconnect the battery terminals.

• Before recycling the machine, remove the battery.

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MACHINE PREPARATION

MACHINE PREPARATION

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, as shipped with batteries, is 481 lb. (218 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. Remove the key (1) from the ignition to prevent damage.
C. The machine is fixed to the pallet with wedges (2) which lock the wheels.

Remove these wedges.

D. Disengage the parking brake (3) by rotating the lever until the brake is no

longer in contact with the wheel.

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.

E. Use a ramp to get the machine down from the pallet, pushing it backwards.
F. Keep the pallet for any future transport needs.

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 bat­tery 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 certified trained
personnel.

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MACHINE PREPARATION

MACHINE PREPARATION

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 person­nel. The incorrect or imperfect connection of the cables to the
connector can seriously harm people and damage objects.

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 batter­ies, 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 remain­ing charge it is possible to complete the drying process before
recharging.

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 perma­nent 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.

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MACHINE PREPARATION MACHINE PREPARATION

11. INSTRUMENT PANEL COMPONENTS

The instrument panel components are identified as follows:

1. Levers to activate pad / traction (located beneath the handlebar)

2. ON/OFF key switch

3. Battery level / hour-counter display

4. Traction speed control knob

5. Eco-mode button

12. REAR COMPONENTS

The rear components are identified as follows:

6. Foot pedal to raise the brushes

7. Water / solution level hose

8. Drain hose with recovery tank cap

9. Latch to close the tanks

10. Compartment storage

11. Lever to raise the squeegee

12. Solution filter

13. Solution control valve

14. ASSEMBLING THE SQUEEGEE

For packaging reasons, the squeegee is supplied dismounted from the machine,
and must be assembled as follows:

1. Close the recovery tank

2. Secure the recovery tank with the latch

3. Loosen the knobs (3) on the squeegee body

4. Insert the left squeegee pin into the left slot (4), tighten the knob (3), ensur­ing that the washer (5) and spring are on the upper part of the squeegee
body.

4. Insert the right squeegee pin into the right slot (6), tighten the knob (3),
ensuring that the washer (7) and spring are on the upper part of the squeegee
body.

5. Insert the vacuum hose (8) onto the the squeegee vacuum port (9).

13. SIDE COMPONENTS

The side components are identified as follows:

14. Handle to raise the recovery tank

15. Parking brake lever

16. Handle to raise the vacuum unit

17. Upper storage compartment

18. Solution tank fill inlet

15. ADJUSTING THE SQUEEGEE HEIGHT

The height of the squeegee must be adjusted based on wear of the squeegee

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.

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blade. To do this, turn the knobs 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.

MACHINE PREPARATION

MACHINE PREPARATION

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 back­wards, rotating the adjuster clockwise. To increase the bend of the squeegee
blade at the outside edges of the squeegee, rotate the adjuster counterclockwise.
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.

20. PAD INSTALLATION

A. Raise the deck and remove any pad or debris from the pad locking face.
B. Line up a new red pad with the pad driving plate and push up lightly to

install.
C. Lower the deck to complete the installation.
D. When using a screen, abrasive pad, or any pad less than 1/2" thick, place it

on the ground below the red pad before lowering the deck.

WARNING: Never operate the machine without a red backing pad.
Failure to use a red backing pad will cause damage to the floor
and the machine.

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 ex­ceeding 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.

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OPERATION

OPERATION

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 pad

is oscillating).

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.

D. Release the foot lever (3) and lower the pad 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 pad 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.

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SHUTTING DOWN THE MACHINE

DAILY MAINTENANCE

1. END OF WORK

When shutting down the machine and before you perform any type of mainte­nance:
A. Turn off the solution control valve (1)
B. Raise the pad 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. Remove any used pads and clean them with water.

WARNING: Always wear gloves when doing this operation to pro­tect yourself from contact with hazardous chemicals.

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 pro­tect 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 pro­tect yourself from contact with hazardous chemicals.

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