Clarke Scrubtec Boost 70 User manual

Form No. 71268A 10/06 CLARKE TECHNOLOGY Printed in the U.S.A.
READ THIS BOOK
This book has important information for the use and safe operation of this machine. Failure to read this book
prior to operating or attempting any service or maintenance procedure to your ALTO machine could result
in injury to you or to other personnel; damage to the machine or to other property could occur as well. You
must have training in the operation of this machine before using it. If your operator(s) cannot read this
manual, have it explained fully before attempting to operate this machine.
All directions given in this book are as seen from the operator’s position at the rear of the machine.
For new books write to: ALTO, 2100 Highway 265, Springdale, Arkansas 72764.
U.S. Patent No. 6,105,192; No. 6,557,207; No. 6,760,947; No. 5,383,251
Operator's
Manual
SCRUBTEC
BOOST 70

-2- CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70
Table of Contents
SECTION II - Parts and Service Manual
Final Assembly Drawing .................................................................................................................................. 28
Parts List ............................................................................................................................................ 29
Recovery Tank Drawing ................................................................................................................................... 30
Parts List ............................................................................................................................................ 31
Solution Tank Assembly Drawing .................................................................................................................... 32
Parts List ............................................................................................................................................ 33
Rear Panel Assembly Drawing ........................................................................................................................ 34
Parts List ............................................................................................................................................ 35
Control Panel Assembly Drawing .................................................................................................................... 36
Parts List ............................................................................................................................................ 37
Squeegee Lift Assembly Drawing ................................................................................................................... 38
Parts List ............................................................................................................................................ 39
Squeegee Assembly Drawing ......................................................................................................................... 40
Parts List ............................................................................................................................................ 41
Frame Axle Assembly Drawing ........................................................................................................................ 42
Parts List ............................................................................................................................................ 43
Brush Head Assembly Drawing ...................................................................................................................... 44
Parts List ............................................................................................................................................ 45
Brake Assembly Drawing and Parts List ......................................................................................................... 46
Vacuum Motor Drawing and Parts List ............................................................................................................ 47
Transaxle Repair Parts .................................................................................................................................... 48
Connection Diagram ........................................................................................................................................ 49
Electrical Schematic ......................................................................................................................................... 50
Operator Safety Instructions ............................................................................................................................ 3
Introduction & Machine Specifications ............................................................................................................. 5
Procedures for Transporting Machine ............................................................................................................. 6
Symbols Used on Scubtec Boost 70 ............................................................................................................... 8
Machine Control Panel ..................................................................................................................................... 10
Machine Controls and Features ...................................................................................................................... 11
How to Prepare the Machine for Operation ...................................................................................................... 12
How to Install the Batteries ................................................................................................................ 12
Battery Maintenance ........................................................................................................................... 13
How to Charge the Batteries ............................................................................................................. 14
How to Install the Brush or Pad ......................................................................................................... 15
How to Remove the Brush or Pad ..................................................................................................... 15
How to Operate the Machine ............................................................................................................................ 16
How to Operate the Squeegee .......................................................................................................... 16
Filling the Solution Tank .................................................................................................................... 16
Operating the Machine ....................................................................................................................... 17
How to Clean a Floor ......................................................................................................................... 18
Maintenance ..................................................................................................................................................... 19
Procedures Before Work is Began .................................................................................................... 19
Procedures to Perform at the End of Work ........................................................................................20
Procedures to Perform Every Week ................................................................................................... 21
Maintenance for the Squeegee .......................................................................................................... 22
How to Adjust the Squeegee ............................................................................................................. 22
How to Center or Off set Brushhead ................................................................................................. 23
Accessories ...................................................................................................................................................... 24
How to Correct Problems in the Machine ........................................................................................................ 25

CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70 - 3 -
OPERATOR SAFETY INSTRUCTIONS
WARNING AVERTISSEMENT ADVERTENCIA
DANGER: Failure to read and observe all DANGER statements could result in
severe bodily injury or death. Read and observe all DANGER
statements found in your Owner's Manual and on your machine.
WARNING: Failure to read and observe all WARNING statements could result
in injury to you or to other personnel; property damage could
occur as well. Read and observe all WARNING statements found in
your Owner's Manual and on your machine.
CAUTION: Failure to read and observe all CAUTION statements could result in
damage to the machine or to other property. Read and observe all
CAUTION statements found in our Owner's Manual and on your
machine.
DANGER: Failure to read the Owner's Manual prior to operating or attempting any service or
maintenance procedure to your Clarke Technology machine could result in injury to
you or to other personnel; damage to the machine or to other property could occur
as well. You must have training in the operation of this machine before using it. If
you or your operator(s) cannot read English, have this manual explained fully before
attempting to operate this machine.
DANGER: Operating a machine that is not completely or fully assembled could result in injury
or property damage. Do not operate this machine unless it is completely
assembled. Inspect the machine carefully before operation.
DANGER: Machines can cause an explosion when operated near flammable materials and
vapors. Do not use this machine with or near fuels, grain dust, solvents, thinners,
or other flammable materials. This machine is not suitable for picking up hazardous
dust. Use only commercially available floor cleaning waxes intended for machine
operation.
DANGER: Lead acid batteries generate gases which can cause an explosion. Keep sparks
and flames away from batteries. Do not smoke around the machine. Charge the
batteries only in an area with good ventilation. Make sure that the AC charger plug
is unplugged from the wall receptacle before connecting or disconnecting the DC
plug to or from the battery pack.
DANGER: Working with batteries can be dangerous! Always wear eye protection and
protective clothing when working near batteries. Remove all jewelry. Do not put
tools or other metal objects across the battery terminals, or the tops of the
batteries.
DANGER: Using a charger with a damaged power cord could result in an electrocution. Do
not use the charger if the power cord is damaged.
WARNING: Operating this machine from anywhere other than the back of the machine could result in
injury or damage. Operate this machine only from the rear.
WARNING: This machine is heavy. Get assistance before attempting to transport or move it. Use
two able persons to move the machine on a ramp or incline. Always move slowly. Do
not turn the machine on a ramp. Do not use on surfaces having a gradient exceeding that
marked on the appliance. Read the "Procedures For Transporting" in this manual before
transporting as machine might topple over if not secured.
WARNING: Machines can topple over and cause injury or damage if guided over the edges of stairs or
loading docks. Stop and leave this machine only on a level surface. When you stop the
machine, put all switches into their "OFF" position. Turn the key switch "OFF" and
remove the key.

-4- CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70
WARNING: Maintenance and repairs performed by unauthorized personnel could result in damage or
injury. Maintenance and repairs must be performed by authorized Clarke Technology
personnel only.
WARNING: Any alterations or modifications of this machine could result in damage to the machine or
injury to the operator or other bystanders. Alterations or modifications not authorized by
the manufacturer voids any and all warranties and liabilities.
WARNING: Electrical components of this machine can "short-out" if exposed to water or moisture.
Keep the electrical components of the machine dry. Wipe the machine down after each
use. This appliance is for dry use only and is not to be used or stored outdoors in wet
conditions.
WARNING: Operating a machine without observing all labels and instructional information could result
in injury or damage. Read all machine labels before attempting to operate. Make sure all
of the labels and instructional information are attached or fastened to the machine. Get
replacement labels and decals from your Clarke Technology distributor.
WARNING: Wet floor surfaces can be slippery. Water solutions or cleaning materials used with this
type of machine can leave wet areas on the floor surface. These areas can cause a
dangerous condition for the operator or other persons. Always put "Caution" signs
around/near the area you are cleaning.
WARNING: Improper discharge of waste water may damage the environment and be illegal.
The United States Environmental Protection Agency has established certain regulations
regarding discharge of waste water. City, state and national regulations regarding this
discharge may also be in effect in your area. Understand and follow the regulations in
your area. Be aware of the environment hazards of chemicals that you dispose.
WARNING: Only use the brushes provided with the appliance or those specified in the Operator's
Manual. The use of other brushes may impair safety.
CAUTION: Use of this machine to move other objects or to climb on could result in injury or damage.
Do not use this machine as a step or furniture. Do not ride on this machine.
CAUTION: Your machine warranty will be voided if anything other than genuine Clarke Technology
parts are used on your machine. Always use Clarke Technology parts for replacement.
CAUTION: This machine contains lead acid batteries. The batteries must be disposed of in an
environmentally acceptable manner.
English Correct Disposal of This Product (Waste Electrical & Electronic Equipment)
(Applicable in the European Union and other European countries with separate
collection systems)
This marking shown on the product or its literature, indicates that it should not be disposed with
other household wastes at the end of its working life. To prevent possible harm to the
environment or human health from uncontrolled waste disposal, please separate this from other
types of wastes and recycle it responsibly to promote the sustainable reuse of material resources.
Household users should contact either the retailer where they purchased this product, or their
local government office, for details of where and how they can take this item for environmentally
safe recycling.
Business users should contact their supplier and check the terms and conditions of the purchase
contract. This product should not be mixed with other commercial wastes for disposal.

CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70 - 5 -
SPECIFICATIONS:
Model SCRUBTEC BOOST 70
Machine Power Supply 24 Volt D.C.,
(4) 6V 250 AH Deep Cycle Batteries or
(4) 6V 330 AH Deep Cycle Batteries
Pad or Brush 1 per Machine
Traverse 0.5 hp (0.4 kW) Transaxle
Traverse Forward Speed Variable to 250 ft./min (76 m/min)
Traverse Reverse Speed Variable to 190 ft./min. (58 m/min)
Battery Protection Low Voltage
Motor Vacuum 3/4 HP, 3 stage, Acoustical High Efficient Tangential
Solution Tank 20 Gallons (76 liters)
Solution Level Calibrated level indicator on rear of machine
Recovery Tank 20 Gallons (76 liters)
Recovery Full Indicator Electric Shut-Off
Parabolic Squeegee Swing type with breakaway feature, No tool operation feature
39 inches (99 cm) hard width with 41 inches (104 cm) flex blade width.
Squeegee Operation Reverse direction on floor and 3 - position manual lever style operation
Cleaning Swath 28 inches (71 cm)
Motor, Brush 3/4 hp (0.56 KW)
Brush / Pad Size 14" x 28" (35.6 cm x 71 cm)
Brush Speed 2250 RPM
Brush Pressure 100 lbs. (45.4 kg)
Drive Wheels (2) 8 in. x 2 in. (20 cm x 5 cm) Neoprene tread
Caster Dual 4 in. x 2 in. (10 cm x 5 cm)
Charger 24 V D.C., 25 Amp, 115/60, on-board optional
Grade Cleaning 5 Degree (6%)
Length 56.25 inches (143 cm)
Width 28.75 inches (73 cm)
Height 43 inches (109 cm)
Weight w/batteries (250 AH) 586 lbs. (266 kg)
Line of Sight (from Operator
Height): 68 inches (173 cm) 7.5 feet (2.3 m)
Noise 71 dBA
Vibration < 2.5 m/s2
Introduction & Machine Specifications
Clarke Technology’s newly designed Scrubtec Boost 70 automatic scrubber is efficient and superior floor
cleaning machines. It uses an orbital movement to scrub a path 28 inches wide. A squeegee wipes the
floor while the vacuum motor removes the dirty solution from the floor - all in one pass.
The machine comes complete with four - 6 volt batteries, one battery charger, a brush or a pad, and one
operator’s manual.

-6- CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70
Figure #1
Procedures For Transporting
How to Put the Machine Into a Van or Truck
WARNING: This machine is heavy. Get
assistance before attempting
to transport or move it. Use
two able persons to move the
machine on a ramp or
incline. Always move slowly.
Do not turn the machine on a
ramp. Do not stop and leave
the machine on a ramp or
incline. The loading ramp
must be a minimum of 32"
wide.
WARNING: Machines can topple over if
guided over the edges of
stairs or loading docks and
cause injury or damage.
Stop and leave this machine
only on a level surface.
When you stop the machine,
put all switches into their
"OFF" position.
1. Make sure the loading ramp is at least eight
(8) feet (2.5m) long and a minimum of 32" (0.8m)
wide, and strong enough to support the machine.
2. Make sure the ramp is clean and dry.
3. Put the ramp in position.
4. Remove squeegee assembly before loading.
ALTO recommends that both the solution tank
and recovery tank are empty before loading.
5. Turn key switch "ON".
6. Align the machine on a level surface five (5) feet
(2 m) in front of the ramp.
7. Put the traverse knob at full speed.
8. Push in either one of the forward/reverse
switches while pushing in the white reverse
switch. Back the machine up the ramp. See
figure 1.
9. Turn the key switch "OFF".

CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70 - 7 -
Figure #2
10. Fasten the machine to the vehicle. Clarke
Technology recommends a strap over the top of
the machine and a strap to keep the machine
from rolling forward or backwards. If this is not
done, there is a possibility of the machine
toppling over. Four tie down points (2 along
each side of frame) are provided on machine for
securing machine.
How to Remove the Machine From a Van or
Truck
1. Make sure there are no obstructions in the area.
2. Make sure the unloading ramp is at least eight
(8) feet (2.5m) long and a minimum of 32"
(0.8m) wide, and strong enough to support the
machine.
3. Make sure the ramp is clean and dry.
4. Put the ramp in position.
5. Unfasten the machine.
WARNING: The machine is heavy.
Make sure you use two able
persons to assist in moving
the machine down the
ramp.
6. Turn the key switch "ON".
7. Set the traverse center knob to the slowest
forward speed setting. Carefully and slowly,
drive the machine to the top of the ramp and
start down.
8. While pushing in the right or left forward/reverse
switch the machine will go forward. See figure
2.
9. As the machine begins to travel down the ramp,
push in the forward/reverse switch to maintain a
slow downward speed.
10. Replace squeegee assembly, brush housing,
and brush or pad driver after machine is
unloaded and ready to use.
Procedures For Transpoting (cont.)

-8- CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70
SYMBOLS USED SCRUBTEC BOOST 70
Warning
Power
Traverse Speed Control
Solution Control
Brush Up / Down

CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70 - 9 -
SYMBOLS USED ON SCRUBTEC BOOST 70
71018A
71015A
71017A
WARNING
READOPERATOR'S
MANUALBEFORE
OPERATINGTHIS
MACHINE
RISKOF FIRE
• Use only
commercially
available floor
cleaners and
waxes intended
for machine
operation.
• Do not use
flammable
materials.
RISKOFINJURY
ORDAMAGETO
MACHINE
• Do not turn, stop
or leave machine
on a ramp or dock.
WARNING
READOPERATOR'S
MANUALBEFORE
OPERATINGTHIS
MACHINE
EXPLOSIVEGASES,
CANCAUSE SEVERE
INJURY,DEATH
ORDAMAGE
TRANSFORMER.
• Keep flammable
materials away from
batteries. Charge in
a cool well ventilated
area.
BATTERIES
CONTAINSULFURIC
ACID. CANCAUSE
SEVEREINJURY.
• Avoid contact with
skin eyes, or
clothing. If contact,
flush with water.
Get medical
attention. If internal.
contact call physi-
cian.
WEAR
PROTECTIVE
EYEGEAR.
71014A
WARNING
MOVINGPARTS.
CONTACTCAN
CAUSESEVERE
INJURY.
• Do not place
hands or feet under
machine when in
use.
WARNING
FALLINGPARTS
CANCAUSE
SEVEREINJURY.
• Make sure tank is
secure before
servicing.

-10- CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70
Figure 3
B
I
D
A
KI
B
CJL
EFGH
Machine Control Panel
Circuit Breakers (See Fig 3, Items "E", "F", "G" & "H")
The circuit breaker reset buttons are located on the rear
cover. The breakers are located as follows:
Item E - Actuator Head (5 amp)
Item F - Vacuum Motor (30 amp)
Item G - Brush Motor (40 amp)
Item H - Traverse Motor (25 amp)
If a circuit breaker trips, determine which motor is not
operating and turn the key switch "OFF". Wait five minutes
and push the reset button back in. Turn the key switch
"ON" and try again. An authorized service person should
be contacted if the breaker trips again.
Control Handles (See Figure 3, Item "I")
The control handles are located at the rear of the ma-
chine. They are used to guide the machine.
Solution Control Knob (See Figure 3, Item "J")
The solution control knob regulates the flow of chemical
solution to the floor. To increase the flow, turn knob
clockwise. To decrease the flow, turn counter clockwise.
Full counter clockwise is OFF and full clockwise is ON.
Clarke Technology recommends starting with the knob
set in the green section to provide the best general
cleaning with optimal water usage.
Traverse Speed Knob (See Figure 3, Item "K")
To increase speed, turn knob clockwise.
Brush Motor Switch (See Figure 3, Item "L")
To activate brush motor, push brush position switch to
down position. Brush Motor and solution flow will activate
when the traverse buttons are pushed. To shut brush
motor off, place brush position switch in up position.
Key Switch (See Figure 3, Item "A")
The key switch turns "ON" the power to the control
panel. "O" is "OFF" and "I" is "ON".
Forward Reverse Switch (See Figure 3, Item "B")
The forward/reverse switch turns the traverse motor
"on" forward and if the brush motors are in the down
position, activates the brush motors/solution control
module. There is a two second delay for the pad
motor to stop after releasing the switch. Either the
right or the left switch can be used. Use either switch
in conjunction with the white reverse switch to reverse
the traverse motor.
Battery Meter (See Figure 3, Item "C")
The battery meter indicates the relative charge on the
battery pack. Do not continue to run the machine
when the needle is in the "red" area. This will shorten
the life of the battery pack.
Reverse Switch (See Figure 3, Item "D")
The reverse switch, when used in conjunction with one
of the forward/reverse switches, causes the machine to
reverse directions. The reverse speed is 70% of the
forward speed.
Hour Meter (Not Illustrated) (Option)
The hour meter indicates the number of hours the
machine has operated. It runs only when the brush
motor is on.
Vacuum Motor Switch (See Figures 4 & 5, pg. 11)
To activate vacuum motor, lower squeegee handle.
Handle has two positions. Lowest position is operating
position and the middle position is transport to clear
vacuum hose.
K

CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70 - 11 -
Figure 6
Figure 4
Figure 5
Figure 7
Machine Controls and Features
Squeegee Lift Handle, See Figures 4 and 5
The squeegee lift handle is located below the control
handles in the center. It is used to raise or lower the
squeegee. The vac motor is turned on when the
handle is lowered to either the first or last position.
Float Shut Off, See Figure 6
The shut-off switch for the vac motor is located in the
recovery tank. It automatically turns off the vac motor
when the recovery tank is full. NOTE: If excessive
foaming occurs in recovery tank, defoamer must
be added. Damage to vacuum motor could result
from foam.
Parking Brake ,See Figure 7
NOTE: Parking Brake must be used if operating
machine on greater than 2% gradient.
The parking brake prevents movement of the machine.
CAUTION: Do not activate the parking brake
while the machine is moving.
The brake is located on the right hand side of the
machine on the transaxle motor. Turn the key
switch off or disconnect the power to the battery to
apply the brake.
There is a mechanical lever located on the brake.
This lever is an override. To manually release the
brake, rotate the lever clockwise. To return the
brake to normal or to apply the brake, rotate the
lever up counter clockwise.
NOTE: If the lever is left in the override
position, the brake will not function with the
key switch, and the machine will not operate.

-12- CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70
Figure 8B
How To Prepare the Machine For Operation
Figure 9
Figure 8A
How To Install The Batteries
The Scrubtec Boost machine uses four - 6 volt batteries.
The batteries are located in the battery compartment
under the recovery tank.
To install the batteries, follow this procedure:
1. Turn machine off. Set brake (if equipped).
2. Make sure recovery tank is empty.
3. Tip up the recovery tank until it locks in the full open
position. See figure 8A.
CAUTION: Before raising the tank, be sure
tank is empty.
NOTE: There is an intermediate position available
for holding the recovery tank open for charging
batteries. See figure 8B.
WARNING: Do not operate or perform mainte-
nance on the machine while the
recovery tank is in the intermediate
position. The tank can be acciden-
tally bumped and it may slam shut.
4. Place the batteries in the tray as shown in
figure 8C.
WARNING: The batteries are heavy. Lifting
batteries without help could result in
an injury. Get help to lift the batter-
ies.
WARNING: Working with batteries can be
dangerous. Always wear eye
protection and protective clothing
when working near batteries. NO
SMOKING!
5. Connect the cables between batteries and install
long battery cable assembly as indicated. See
figure 9.
6. Join the connector from the battery pack to the
connector on the control panel.
7. Close recovery tank by pulling up on the latch arm
and then slowly lowering the tank.
NOTE: Charge the batteries before using the
machine.

CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70 - 13 -
How To Prepare the Machine For Operation
Battery Maintenance
The electrical power to operate the machine comes
from the storage batteries. Storage batteries need
preventative maintenance.
WARNING: Working with batteries can
be dangerous. Always wear
eye protection and protective
clothing when working near
batteries. NO SMOKING!
To maintain the batteries in good condition, follow
these instructions:
1. Keep the electrolyte at the correct level. The
correct level is between 1/4" (1/2 cm) below the
bottom of the tube in each cell and above the
tops of the plates. Check the level of the electro-
lyte each time you charge the batteries. See
figure 10.
NOTE: Check the level of electrolyte prior to charging
the batteries. Be sure the plates in each cell are
covered with electrolyte before charging. Do not top
off the cells prior to charging the battery. Electrolyte
expands during charging. As a result, the electrolyte
could overflow from the cells. Always top off the cells
with distilled water after charging.
CAUTION: Irreversible damage will occur to
the batteries if electrolyte does
not cover the plates. Keep the
electrolyte at the correct level.
CAUTION: Machine damage and discharge
across the tops of the batteries
can occur if the batteries are over
filled. Do not fill the batteries up
to the bottom of the tube in each
cell. Wipe any acid from the
machine or the tops of the batter-
ies. Never add acid to a battery
after installation.
CAUTION: Batteries must be refilled with
distilled water only. Do not use
tap water as it may contain
contaminants that will damage
batteries.
2. Keep the tops of the batteries clean and dry.
Keep the terminals and connectors clean. To
clean the top of the batteries, use a damp cloth
with a weak solution of ammonia or bicarbonate
of soda solution. To clean the terminals and
connectors, use a terminal and connector
cleaning tool. Do not allow ammonia or bicar-
bonate of soda to get into batteries.
Correct Level
Figure 11
Figure 10
3. Keep the batteries charged.
4. To drain battery compartment: (See figure 11)
a. Always wear protective eye protection and
protective clothing.
b. Add a weak solution of ammonia or bicarbon-
ate of soda solution to battery compartment to
neutralize any spilled acid.
c. Pull drain hose out from under transaxle.
d. Place hand behind flange and open valve.
e. When empty, close valve.
f. Replace valve and drain hose on top of
transaxle.
g. Neutralize any acid spills with ammonia or
bicarbonate of soda.

-14- CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70
How To Charge The Batteries
WARNING: Charging the batteries in an area
without adequate ventilation
could result in an explosion. To
prevent an explosion, charge the
batteries only in an area with
good ventilation.
WARNING: Lead acid batteries generate
gases which could explode.
Keep sparks and flames away
from batteries. NO SMOKING!
To charge the batteries, follow this procedure:
1. Place the key switch is in the “OFF” position.
2. Before charging the batteries, the battery compart-
ment needs to be vented. To vent compartment, tip
up the recovery tank until it locks in the open
position (see figure 12 & 13). To close the tank, pull
up on the arm and then slowly lower the tank to the
closed position.
CAUTION: Before raising tank, be sure tank
is empty.
WARNING: Do not operate or perform main-
tenance on the machine while
the recovery tank is in the open
position. The tank can be acci-
dentally bumped and it may slam
shut.
3. Put the charger on a flat surface. Make sure the
vents on the sides are at least two inches away from
walls and other objects. Make sure there are no
objects near the vents on the bottom of the charger.
4. Disconnect the battery pack connector from the
batteries.
5. Connect the DC connector on the charger to the
battery pack connector. See figure 14.
6. Connect the battery charger AC cord to a minimum
15 amp 120V properly grounded wall receptacle.
NOTE: Make sure you plug into a circuit that is not
loaded by other equipment. Wall breakers may be
tripped and no charge will occur.
WARNING: Never charge a GEL battery with
an unsuitable battery charger.
Carefully follow the instructions
given by the manufacturer of the
batteries and battery charger.
NOTE: To prevent permanent damage to the batteries,
avoid their complete discharge. Never leave the batteries
completely discharged, even if the machine is not being
used. When recharging the batteries, keep the recovery
tank open. After every 20 recharging cycles, check the
level of the electrolyte and if necessary top off with
distilled water.
Figure 12
Figure 13
Figure 14
How To Prepare the Machine For Operation

CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70 - 15 -
How To Install The Brush Or Pad
To install the brush or pad on the machine, follow this
procedure:
1. Turn the key switch "ON".
2. Put the brush switch in the "Up" position.
3. Turn the key switch "OFF".
4. Go to the front of the machine.
5. Press on a brush or pad, under the flex plates. See
figure 15.
NOTE: When using a black pad, position pad on head.
Lower head and operate momentarily to affix pad
to pad driver (if you have difficulty, position pad on
floor and lower head then operate.)
How To Remove The Brush Or Pad
To remove the brush or pad from the machine, follow this
procedure:
1. Turn the key switch "ON".
2. Put the brush switch in the "Up" position.
3. Turn the key switch "OFF".
4. Go to the front of the machine and pull downward on
the brush or pad until it releases from the flex plates.
See figure 16.
How To Prepare the Machine For Operation
Figure 15
Figure 16

-16- CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70
How To Operate The Machine
Figure 17
Figure 18
Figure 19
Figure 19A
C
How To Operate The Squeegee
The squeegee wipes the floor while the vacuum motor
removes the dirty solution from the floor. Use your
hand to lower or raise the squeegee handle. To
operate the squeegee, follow this procedure:
1. To lower the squeegee and start the vacuum
motor, move the squeegee lever to the right and
down. See figure 17.
2. To raise the squeegee, lift the squeegee lever up.
See figure 18.
NOTE: The center position lets the vacuum motor
continue to run with the squeegee off the floor to avoid
drips and also allows you to back up the machine.
How To Fill The Solution Tank
The solution tank can be filled in the front or through
the clear drain hose at the rear of the machine (See
figure 19). To fill the solution tank follow this proce-
dure:
1. Add a cleaning chemical to the solution tank.
For the correct amount of chemical, follow the
directions shown on the container.
2. Fill the solution tank with water. When filling
machine in the front with a hose, position hose
inside the fill screen as shown in figure 19A.
When filling machine from the rear, position clear
drain hose against bracket and insert hose as
shown in figure 20 Solution level can be viewed
from the back of the machine.
Figure 20

CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70 - 17 -
Figure 21
How To Operate The Machine
A
BC
A
WARNING: Water solutions or cleaning
materials used with this type of
machine can leave wet areas on the
floor surface. These areas can cause
a dangerous condition for the
operator or other persons. Always
put CAUTION signs near the area you
are cleaning.
WARNING: Machines can ignite flammable
materials and vapors. Do not use
with or near flammables such as
gasoline, grain dust, solvents and
thinners. Only use a cleaning
concentration recommended by the
chemical manufacturer.
WARNING: Clarke Technology recommends a
maximum water temperature of
120oF (49oC).
Operating The Machine
NOTE: Put the machine in the lowest traverse speed
setting. Use the machine in an area that has no furniture
or objects until you can do the following:
1. Move the machine in a straight direction, forward and
backward.
2. Stop the machine safely.
3. Turn the machine both left and right and return to a
straight direction.
To move the machine, follow this procedure:
1. Release the parking brake.
2. Turn the key switch to the "ON" position
3. Raise the brush to the highest setting.
4. Raise the squeegee.
5. When either the left or right forward/reverse switches
(figure 21, item A) are pushed in, the machine will go
forward.
6. Control the speed of traverse by using the traverse
speed control knob (figure 21, Item C).
7. To stop, release the forward/reverse switch.
8. To reverse the machine, push in the white reverse
switch (figure 21 item B) and either the right or left
forward/reverse switch (figure 21 item A) at the same
time.
9. To stop, release the forward/reverse switch.
10. To turn the machine, push the rear of the machine to the
side.
11. When you stop the machine, turn the key switch
"OFF", remove the key and set the parking brake.

-18- CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70
How To Clean A Floor
WARNING: Water solutions or cleaning materials
used with this type of machine can leave
wet areas on the floor surfaces. These
areas can cause a dangerous condition for
the operator or other persons. Always put
CAUTION signs near the area you are
cleaning.
To clean a floor follow this procedure:
1. Set the parking brake.
2. Put the water and a cleaning chemical in the clean
solution tank.
3. Release the parking brake.
4. Turn the key switch "ON".
5. Lower the squeegee.
6. Put the brush switch in the down position.
7. Turn the solution knob to the right to activate the flow of
solution. Adjust the flow of clean solution to the flow
desired.
8. Move the machine across the floor in the forward
direction.
9. Make a 180° turn.
NOTE: When you make more passes across the floor, let the
brush clean approximately 2 inches (5 cm) of the area already
cleaned by the brush.
NOTE: During most cleaning procedures, apply and remove
the solution in one operation.
How To Clean A Very Dirty Floor
To clean a very dirty floor, follow this procedure:
1. Apply solution to the floor.
2. Do not lower the squeegee. This will keep the vacuum
motor off.
3. Lower the brush or pad and scrub the floor.
4. Scrub the floor again with additional solution and lower
the squeegee.
5. Pick up all the solution with the squeegee.
How To Operate The Machine (cont)

CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70 - 19 -
Maintenance
Figure 22
Figure 23
Figure 24
WARNING: Maintenance and repairs must be
done by authorized personnel only.
WARNING: Always empty the solution tank and
recovery tank before doing any
maintenance.
WARNING: Keep all fasteners tight.
These Maintenance Procedures Must Be Done
Every Day
Keep the machine clean, it will need fewer repairs and
have longer life.
Do These Procedures When You Begin Your Work
Period
1. Turn off key switch.
2. Disconnect AC power from battery charger (fol-
low charger instructions).
3. Disconnect the plug on the battery charger from
the battery pack connector.
4. Join the connector from the batteries to the
control panel cable connection. See figure 22.
5. Make sure the Screen filter over the vacuum
motor is clean and in position. See figure 24.
6. Make sure the recovery tank lid is on correctly.
See figure 23, Item A.
7. Make sure the valve on the recovery drain hose is
clean. Tightly close the valve.
8. Make sure the brush or pad is in position and
installed correctly.
9. Check the installation of the squeegee and
squeegee hose.
10. Make sure the solution drain / level indicator hose
is secure on the storage mount on the rear of the
machine.

-20- CLARKE TECHNOLOGY Operator's Manual SCRUTBTEC BOOST 70
Maintenance
Figure 25
Figure 26
Figure 27
Figure 28
Do These Procedures When You End Your Work
1. Drain the solution tank (Figure 25) and the recovery
tank (Figure 26). To drain the tanks , follow this
procedure:
a. Turn the key switch “OFF”.
b. Remove the drain hose from the back of the
machine.
c. Put the end of the hose over a drain or bucket.
d.
Recovery Tank:
1.) Turn the valve handle to the left. Pull the
handle out to open the drain (Figure 27).
NOTE: Have the opening in the side of the valve away
from you when you open the valve.
2.) To open the valve completely, turn the
handle to the right. Pull the handle out of
valve (Figure 28).
Solution Tank:
When hose is lowered to water level, water will
flow.
2. Flush the tanks. To flush the tanks, put clean water in
the tank through the opening on top of the tank.
3. If a tank or drain hose has an obstruction, use a pressure
water hose to flush the tank or hose. Put the water hose
into the drain hose.
4. Leave the tanks and the recovery drain valve open to dry
in the air.
5. Check the squeegee blade. Use a cloth to clean the
squeegee blade. If the squeegee blade is damaged or
worn, turn or replace the blade.
6. Check and clean the solution lid gasket. Use a mild
cleaning solution and rinse the parts in clean water.
Check the batteries and if necessary add distilled water
after charging. The correct level is within 1/4 inch (1/2 cm)
of the bottom of the tube in each cell.
CAUTION:Tap water may contain contami-
nants that will damage batteries.
Batteries must be refilled with
DISTILLED WATER ONLY.
WARNING: Lead acid batteries generate
gases which can cause an explo-
sion. NO SMOKING. Always wear
eye protection and protective
clothing when working near
batteries.
Use a clean cloth and wipe the surface of the machine.
Charge the batteries. See the instruction in the section of
this book called “How To Charge The Batteries”.