U.S. Patent No. 6,760,947; No. 6,105,192; No. RE39,581 (Deluxe Machines)
EN
Form No. 70935A 11/07, Revised 12/09 Printed in the U.S.A.
English (2-30)
Parts List (31-67)
READ THIS MANUAL
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 Nilfi sk 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.
Procedures For Transporting ............................................................................................................................................................................................................................... 7
Symbols Used On S & L Models .........................................................................................................................................................................................................................8
Machine Control Panel S Models .......................................................................................................................................................................................................................10
Machine Control Panel L Models ......................................................................................................................................................................................................................... 12
Display Screen For L Models...............................................................................................................................................................................................................................14
Machine Controls and Features ..........................................................................................................................................................................................................................15
How To Prepare The Machine For Operation ......................................................................................................................................................................................................16
How To Install The Batteries .........................................................................................................................................................................................................16
How To Charge The Batteries .......................................................................................................................................................................................................18
How To Install The Brushes Or Pad Drivers ..................................................................................................................................................................................19
How To Remove The Brushes Or Pad Drivers ..............................................................................................................................................................................19
How To Operate The Machine ............................................................................................................................................................................................................................. 20
How To Operate The One Touch System ......................................................................................................................................................................................20
Reprogramming One Touch ..........................................................................................................................................................................................................20
How To Return One Touch To Factory Default Setting ..................................................................................................................................................................20
How To Operate The Squeegee....................................................................................................................................................................................................21
How To Fill The Solution Tank .......................................................................................................................................................................................................21
How To Traverse Machine ............................................................................................................................................................................................................22
How To Clean A Floor ...................................................................................................................................................................................................................22
How To Correct A Problem .................................................................................................................................................................................................................................28
Common Error Codes (SRUBTEC 770 L, 784 L & 795 L) ................................................................................................................................................................................... 29
Solution Tank Assembly .......................................................................................................................................................................................................................................32-33
Recovery Tank Assembly ....................................................................................................................................................................................................................................34-35
Electrical Panel Assembly S Models (Solo Controller) ........................................................................................................................................................................................36-37
Electrical Panel Assembly S Models (I-Drive Controller) ..................................................................................................................................................................................... 38-39
Electrical Panel Assembly L Models .................................................................................................................................................................................................................... 40-41
Control Panel Assembly L Models ....................................................................................................................................................................................................................... 42
Control Panel Assembly S Models (Solo Controller) ...........................................................................................................................................................................................43
Control Panel Assembly S Models (I-Drive Controller) ........................................................................................................................................................................................ 44-45
Squeegee Swing Arm Assembly ..........................................................................................................................................................................................................................46-47
Traverse System Assembly .................................................................................................................................................................................................................................52-53
Brush Head Assembly .........................................................................................................................................................................................................................................54-55
Brush Motor .........................................................................................................................................................................................................................................................56
Imperial Transaxle Parts ......................................................................................................................................................................................................................................58-59
Electrical Schematic S Models (Solo Controller) .................................................................................................................................................................................................61
Electrical Schematic S Models (I-Drive Controller) .............................................................................................................................................................................................. 62
Electrical Schematic L Models ............................................................................................................................................................................................................................. 63
-2- FORM NO. 70935A Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795
OPERATOR SAFETY INSTRUCTIONS
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 Nilfi sk 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 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
until it is completely assembled. Inspect the machine carefully before operation.
DANGER!
Machines can cause an explosion when operated near fl ammable materials and vapors. Do not use this machine with or near fuels,
grain dust, solvents, thinners, or other fl ammable materials. This machine is not suitable for picking up hazardous dust.
DANGER!
Lead acid batteries generate gases which can cause an explosion. Keep sparks and fl ames away from batteries. Do not smoke
around the machine. Charge the batteries only in an area with good ventilation. Make sure that you unplug the AC charger from the
wall outlet before operating the machine.
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. If operating machine on a gradient over 2%, do not stop,
turn or park. Read the “Procedures For Transporting” in this manual before transporting.
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, turn the key “OFF”. Set the parking brake.
WARNING!
Maintenance and repairs performed by unauthorized personnel could result in damage or injury. Maintenance and repairs must be
performed by authorized Nilfi sk Alto personnel only.
WARNING!
Any alterations or modifi cations of this machine could result in damage to the machine or injury to the operator or other bystanders.
Alterations or modifi cations not authorized by the manufacturer voids any and all warranties and liabilities.
Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795 FORM NO. 70935A - 3 -
OPERATOR SAFETY INSTRUCTIONS
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. For storage, keep the machine in a dry building.
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 plates from your Nilfi sk Alto distributor.
WARNING!
Wet fl oor surfaces can be slippery. Water solutions or cleaning materials used with this type of machine can leave wet areas on the
fl oor 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. Also, city and state regulations regarding this discharge may
be in your area. Understand and follow the regulations in your area. Be aware of the environmental hazards of chemicals that you
dispose.
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 Nilfi sk Alto parts are used on your machine. Always use Nilfi sk
Alto parts for replacement.
-4- FORM NO. 70935A Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795
INTRODUCTION
Nilfi sk ALTO’s newly designed Scrubtec 795, 784 & 770 automatic scrubbers are effi cient and superior fl oor cleaning machines. The
Scrubtec 795 uses two brushes or pads to scrub a path 97 cm wide. The Scrubtec 784 uses two brushes or pads to scrub a path 84
cm wide. The Scrubtec 770 uses two brushes or pads to scrub a path 71 cm wide. A squeegee wipes the fl oor while the vacuum
motor removes the dirty solution from the fl oor - all in one pass.
The Scrubtec 795, 784 & 770 automatic scrubbers come complete with six - 6 volt batteries, fi ve battery connector cables, two battery
cables, either two brushes or two pad drivers, and one operator’s manual.
Cleaning Swath38 inch (97 cm)33 inch (84 cm)28 inch (71 cm)
Grade Cleaning6° Incline6° Incline6° Incline
Weight w/Batteries
(310AH)
Shipping Weight
1025 lbs. 465kg1015 lbs. 460kg1005 lbs. 456kg
1328 lbs. 602kg1318 lbs. 598kg1308 lbs. 593kg
w/batteries (310AH)
Noise76.5 dBA76.5 dBA76.5 dBA
Vibration<2.5 m/s2<2.5 m/s2<2.5 m/s2
-6- FORM NO. 70935A Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795
PROCEDURES FOR TRANSPORTING
How To Put The Machine In A Van Or Truck
WARNING:
The machine is heavy. Make sure you use two able persons to assist the machine in climbing the ramp.
1. Make sure the loading ramp is at least eight (8) feet long, 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, brush housings, & brushes or pad drivers before loading.
5. Turn key switch “ON”.
6. Align the machine on a level surface ten (10) feet in front of the ramp.
7. Put the traverse speed switch in the “HI” position.
8. Press one or both forward switches.
9. Push the machine to the top of the ramp.
10. Turn the key switch “OFF”.
11. Fasten the machine to the vehicle.
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 long 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. Carefully and slowly, drive the machine to the top of the ramp by pressing and holding either of the forward switches and the
reverse switch.
8. Put the traverse speed switch to the mid range speed setting. As the machine begins to travel down the ramp, maintain a slow
downward speed by pressing either of the forward switches.
9. Replace squeegee assembly, brush housings, & brushes or pad drivers after the machine is unloaded and ready to use.
Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795 FORM NO. 70935A - 7 -
SYMBOLS USED ON SCRUBTEC 770, 784, 795
SYMBOLS USED ON SCRUBTEC 770S, 784S, 795S / 770L, 784L, 795L
Hazard Alert Symbol
On/Off Key Switch
SYMBOLS USED ON
SCRUBTEC 770S, 784S, 795S
Additional Brush PressureBrush Up/Down
PowerTraverse Speed Control
SYMBOLS USED ON
SCRUBTEC 770L, 784L, 795L
Squeegee Up/Down
Solution Control
Hour Meter Switch
Solution ControlCharge/Battery Meter (Solo)
Charge IndicatorOne Touch Switch
Charge Indicator (I-Drive)
-8- FORM NO. 70935A Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795
Brush Up/Down
SYMBOLS USED ON SCRUBTEC 770, 784, 795
WARNING
READ OPERATOR'S
MANUAL BEFORE
OPERATING THIS
MACHINE
RISK OF FIRE
• Use only commercially available
fl oor cleaners and
waxes intended for
machine operation.
• Do not use fl am-
mable materials.
RISK OF INJURY
OR DAMAGE TO
MACHINE
• Do not turn, stop
71018A
or leave machine on
a ramp or dock.
WARNING
READ OPERATOR'S
MANUAL BEFORE
OPERATING THIS
MACHINE
EXPLOSIVE GASES, CAN CAUSE
SEVERE INJURY,
DEATH
OR DAMAGE
TRANSFORMER.
• Keep fl ammable
materials away from
batteries. Charge in
a cool well ventilated
BATTERIES CONTAIN SULFURIC
ACID. CAN CAUSE
SEVERE INJURY.
• Avoid contact with
skin eyes, or clothing. If contact, fl ush
with water. Get
medical attention. If
internal. contact call
physician.
71017A
WARNING
MOVING PARTS.
CONTACT CAN
CAUSE SEVERE
INJURY.
• Do not place
hands or feet under
machine when in
use.
71015A
71014A
WEAR
PROTECTIVE
EYE GEAR.
WARNING
FALLING PARTS
CAN CAUSE SEVERE INJURY.
• Make sure tank
is secure before
servicing.
Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795 FORM NO. 70935A - 9 -
MACHINE CONTROL PANEL 770S, 784S & 795S
Key Switch (See Figure #1, Item “A”)
The key switch turns “ON” the power to the control panel. “0” is “OFF” and “I” is “ON”.
Traverse Speed Switch (See Figure #1, Item “B”)
The speed control varies from low to high speed. To increase the speed, turn the knob to the right. To decrease the speed, turn the
knob to the left.
Brush Up/Down Switch (See Figure #1, Item “C”)
The brush switch has two positions: “Up” positions the brushes up; “Down” positions the brushes on the fl oor. The brush motors start
when the brushes are down and the traverse switch is depressed.
Increase Brush Pressure Switch (See Figure #1, Item D)
This switch is used to increase the brush pressure. Increased brush pressure may be required when stripping or cleaning heavily
soiled fl oors. To increase brush pressure, fi rst lower the brushes by pressing the brush up/down switch (Item “C”) to the down
position. This will lower the brushes to the normal scrub position. To increase brush pressure, press and hold the switch (Item “D”)
until the desired brush pressure is reached or the brush deck stops moving downward. To reposition the brush pressure to normal
scrub, press the brush up/down switch (Item “C”) to the up position and after the brush deck is completely raised, then return the
switch to the down position for normal scrub.
Solution Control Knob (See Figure #1, Item “E”)
The solution control knob regulates the fl ow of cleaning solution to the fl oor. To increase the fl ow turn the knob clockwise. To
decrease the fl ow, turn the knob counter-clockwise.
Forward Switch (See Figure #1, Item “F”)
The forward switch turns the traverse motor “on” and if the brush motors are in the down position, it also activates the brush motors
and solution control module. Either the right or the left switch can be used.
Reverse Switch (See Figure #1, Item “G”)
The reverse switch, when used in conjunction with one of the forward switches, causes the machine to reverse direction. The reverse
speed is 70% of the forward speed.
Charge / Battery Meter (Solo) (See Figure #1, Item “H1”)
The charge/battery meter indicates the battery is being charged when the charger is plugged into an AC outlet. It also indicates the
amount of charge that is left in the batteries while the machine is in use. When the battery charger gets too low the red light will begin
fl ashing and the brush/pad motors will shut off.
Battery Meter / Charge Indicator Light (I-Drive) (See Figure #1, Item “H2”)
The battery meter indicates the amount of charge remaining in the batteries while the machine is in use.
When the charger is plugged into an AC Outlet, the charge green indicator light will fl ash on and off. When the batteries become fully charged, the
green indicator light will remain on until the charger is unplugged.
Circuit Breakers (See Figure #1, Item “I”-”M”)
The circuit breaker reset buttons are located on the control panel. The breakers are located as follows: Item I & J - Brush Motors
(35A); Item K - Traverse Motor (30A); Item L - Vac Motor (25A); Item M - Actuator Motor, Brush Head (5A)
If a circuit breaker trips, determine which motor is not operating and turn the key switch “OFF”. Wait fi ve 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.
Hour Meter (See Figure #1, Item “N”)
The hour meter indicates the number of hours the machine has operated. It runs only when the machine is moving forward or
reverse.
-10- FORM NO. 70935A Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795
MACHINE CONTROL PANEL 770S, 784S & 795S
Figure #1
F
M
E
G
L
K
C
B
F
D
A
J
I
H1
N
H2
Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795 FORM NO. 70935A - 11 -
MACHINE CONTROL PANEL 770L, 784L & 795L
Key Switch (See Figure #2 Item “A”)
The key switch turns “ON” the power to the control panel. “O” is “OFF” and “I” is “ON”.
Traverse Speed Switch (See Figure #2, Item “B”)
The speed control varies from low to high speed. To increase the speed, turn the knob to the right. To decrease the speed, turn the knob to the left.
Squeegee Up/Down Switch (See Figure #2, Item “C”)
The squeegee switch is used to raise and lower the squeegee and to turn on and off the vacuum motor. The squeegee will lower and the vacuum
motor will turn on when the switch is placed in the lower position. To raise the squeegee, place the switch in the up position. The vacuum motor will
stop, after a short delay, when the switch is placed in the up position.
The middle switch position is used for the one touch control. The squeegee will raise and lower and the vacuum will turn on and off automatically
when the one touch control function is used. NOTE: The squeegee switch must be in the middle position for the squeegee and vacuum to
operate properly with the one touch feature.
Brush Up/Down Switch (See Figure #2, Item D)
To lower brush head, push the brush switch in the down (+) position. To increase brush pressure, continue to push the brush switch in the down (+)
position until the desired pressure is reached or until brush head travel stops. The brush motors will start and solution will fl ow (provided the solution
is turned “ON”) when the machine begins to traverse. To raise the brush head, push the brush switch in the up (-) position until the brush head travel
stops or desired position is reached.
Solution Flow Control (See Figure #2, Item “E”)
The solution fl ow switch regulates the fl ow of chemical solution to the fl oor. To increase the fl ow, push the solution fl ow switch in the down (+) posi-
tion until desired fl ow is reached. To decrease the fl ow, push the solution fl ow switch in the up (-) position until the desired fl ow is reached. To shut
off the solution, push the solution fl ow switch in the up (-) position until no indicators are visible on the display. NOTE: DO NOT run dry! NOTE: No
solution will fl ow when the machine does not traverse.
Forward Switch (See Figure #2, Item “F”)
The forward switch turns the traverse motor “on” and if the brush motors are in the down position, it also activates the brush motors and solution
control module. Either the right or the left switch can be used.
Reverse Switch (See Figure #2, Item “G”)
The reverse switch, when used in conjunction with one of the forward switches, causes the machine to reverse direction. The reverse speed is 70%
fo the forward speed.
One Touch (See Figure #2, Item “H”)
The one touch button is a green button that lowers and raises the brush head and squeegee with one touch. NOTE: For more information about the
one touch feature see the section “How to Operate the Machine”.
LCD Display (See Figure #2, Item “I”)
The main display indicates the state of battery charge, brush head, solution and squeegee status. It will also display machine run hours and error
codes. NOTE: When the battery charger gets too low the battery display will begin fl ashing and the brush/pad motors will shut off.
Display Button (See Figure #2, Item “J”)
Pressing the black display button will toggle between the main machine functions and the hour meter. The hour meter indicates the number of hours
the machine has operated. It displays brush motor, vacuum motor, traverse motor and total key on hours.)
Circuit Breakers (See Figure #2, Item “K”, “L”, “M”)
The circuit breaker reset buttons are located on the control panel. The breakers are located as follows: Item “K” and “L” - Brush Motors (35A); Item
“M” - Key Switch (5A).
If a circuit breaker trips, determine which motor is not operating and turn the key switch “OFF”. Wait fi ve 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.
-12- FORM NO. 70935A Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795
MACHINE CONTROL PANEL 770L, 784L & 795L
GB
Figure #2
F
C
M
D
E
F
I
A
J
H
KL
Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795 FORM NO. 70935A - 13 -
DISPLAY SCREENS FOR SCRUBTEC 770L, 784L, 795L
Position arrow indicating current position
of squeegee (up or down)
Screens
Available
to Operator
SCREEN 1
“Battery” blinks when
low voltage occurs.
SCREEN 2
Example
3
Water “droplets” off when solution is off and
they are fl ashing when solution is on.
Arrows indicating vacuum status. They are fl ashing when vac
is on and off when vac is off.
SCREEN 3 (Diagnostic)
Indicators are on all
the time showing
current settings.
The Diagnostic only. It will not show unless a fault with
the machine occurs. When the fault happens the icon
and error code will be displayed.
See "Common Error Codes" at end of "Maintenance
Section".
-14- FORM NO. 70935A Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795
The squeegee lift handle is located below the control handles on the right side. It is
used to raise or lower the squeegee. The vac motor is turned on when the handle
is lowered.
Parking Brake (Optional)See Figure #4.
The parking brake prevents movement of the machine. The brake is located on
the left hand side of 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 toward the rear of machine (counter
clockwise). To return the brake to normal or to apply the brake, rotate the lever
towards the front of the machine (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.
EN
CAUTION!
Do not activate the brake while the machine is moving.
Float Shut Off See Figure #5.
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.
Figure #4
Figure #3a
Figure #3b
Figure #5
Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795 FORM NO. 70935A - 15 -
Figure #3c
HOW TO PREPARE THE MACHINE FOR OPERATION
How To Install The Batteries
The Scrubtec machines use six 6-volt batteries. The batteries are
located in the battery compartment under the recovery tank.
To Install the batteries, follow this procedure:
1. Turn key switch off.
2. Make sure both tanks are empty.
38720B
38722B
38720B
3. Disconnect the hoses from the recovery tank (upper tank) &
unplug the vac motor and fl oat switch.
4. Remove the tank support bracket.
5. Remove the recovery tank.
6. Place the batteries in the solution tank as shown in fi gures 6a
and 6b.
WARNING!
Lifting batteries without help could result in an injury.
Get help to lift the batteries. The batteries are heavy.
WARNING!
Working with batteries can be dangerous. Always wear
eye protection and protective clothing when working
near batteries. NO SMOKING!
7. Connect the battery cables between batteries and install long
battery cable assembly as indicated. See fi gure 6a and 6b.
8. Install the tank, reconnecting hoses and plugging in vac motor
and fl oat switch connectors. Install tank support bracket.
NOTE: Charge the batteries before using the machine.
Figure #6a
38722B
Figure #6b
38722B
38720B
38722B
38722B
38722B
-16- FORM NO. 70935A Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795
HOW TO PREPARE THE MACHINE FOR OPERATION
Battery Maintenance
The electrical power to operate the machine comes from the storage
batteries. Storage batteries need preventive 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” below the bottom of the tube in each cell and above the tops of
the plates. Check the level of the electrolyte each time you charge
the batteries. See fi gure #7.
NOTE: Check the level of electrolyte prior to charging the batteries. Be
sure the plates in each cell are covered with electrolyte . Do not top off the
cells prior to charging the battery. Electrolyte expands during charging. As
a result, the electrolyte could overfl ow from the cells. Always top off the
cells with distilled water after charging.
CAUTION!
Irreversible damage will occur to the batteries if the electrolyte level
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 fi lled above the bottom of the tube
in each cell. Do not fi ll the batteries up to the bottom of the tube
in each cell. Wipe any acid from the machine or the tops of the
batteries. Never add acid to a battery after installation.
Correct fi ll level
Figure #7
CAUTION!
Tap water may contain contaminants that will damage batteries.
Batteries must be re-fi lled with distilled water only.
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 bicarbonate of soda to get into batteries.
3. Keep the batteries charged.
Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795 FORM NO. 70935A - 17 -
HOW TO PREPARE THE MACHINE FOR OPERATION
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 fl ames away from batteries. NO SMOKING!
To charge the batteries, follow this procedure:
1. Make sure the key switch is in the “OFF” position.
2. Before charging the batteries, the battery compartment needs to
be vented. To vent compartment, tip up the recovery tank until
it locks in the open position (see fi gure #8). 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.
Figure # 8
WARNING!
Do not operate or perform maintenance on the machine while the
recovery tank is in the open position. The tank can be accidentally
bumped and it may slam shut.
3. Put the charger on a fl at 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 fi gure #8A.
6. Connect the battery charger AC cord located at the rear of
the machine to a 10 amp (min) 230V properly grounded wall
receptacle.
7. Observe indicator light to ensure the charging process has
started. Flashing light(s) indicates that the batteries are being
charged. Steady on green light indicates the batteries are fully
charged.
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.
Figure 8A
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.
-18- FORM NO. 70935A Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795
HOW TO PREPARE THE MACHINE FOR OPERATION
How To Install The Brushes Or Pad Drivers
To install the brushes or pad drivers 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. Unlatch right and left brush housings and remove them. See
fi gure #9.
6. Put a brush or pad driver under the brush motor plate. See
fi gure #10.
7. Align the lugs on the motor gimbal with the slots in the brush
gimbal.
8. Pull the brush up until the gimbal locks.
9. Repeat steps 6, 7, and 8 to install the second brush or pad
driver.
How To Remove The Brushes Or Pad Drivers
To remove the brushes or pad drivers 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.
5. Push down on two sides of the brush or pad driver until the
gimbals release.
Figure #9
Figure #10
Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795 FORM NO. 70935A - 19 -
HOW TO OPERATE THE MACHINE
How to Operate the One Touch System (“L Class” models only)
One touch cleaning is a feature on the new Scrubtec Walk-behind
Scrubber. The factory defaults for this setting are two bars of brush
pressure and four bars for solution fl ow and squeegee in the down
position.
1. Press and release the green button for all cleaning functions to
begin, see fi gure #11, item A.
2. The squeegee and brush head lower to the fl oor and the
vacuum starts. NOTE: The squeegee switch must be in the
center position for the squeegee to operate with the one touch
feature, see fi gure #11, item B.
3. The brushes and solution will begin only when you begin to
traverse.
4. The cleaning will be at the factory default settings, however
you can reprogram these settings to your specifi cations. See
“Reprogramming One Touch” section below.
5. To end cleaning process, press the green button again
and solution will stop; brushes will raise; after a short delay
squeegee will raise; and the motor will turn off.
NOTE: It is intended that this be done while traversing. If you
stop and do it, some solution can be left on the fl oor.
Reprogramming One Touch
If you do not want to use the factory default settings, you may
reprogram the setting by following the procedures below:
1. Place the machine in the desired scrub condition by using the
one touch and individual switches.
2. Press and hold the green one touch button until you see the
LCD display fl ash, then release the button. NOTE: The time
required should be approximately 5 seconds.
3. When you activate or deactivate the one touch, it will now be
set to your preference for cleaning. These settings will remain
until you disconnect power or reprogram them. NOTE: When
programming one touch, be sure squeegee is in automatic
(middle) position, otherwise you may program squeegee either
up or down all the time.
How to Return One Touch to Factory Default Settings
To restore the factory settings, follow the procedures below:
1. Press and hold the green one touch button until you see the
LCD display fl ash two times (5 seconds between fl ashes),
see fi gure 11. NOTE: The time required for this will be
approximately 10 seconds.
2. The settings should be returned to 4 bars of solution and 2 bars
of brush pressure. NOTE: The squeegee vac switch must be
in the middle position for default settings to work.
B
A
Figure #11
-20- FORM NO. 70935A Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795
HOW TO OPERATE THE MACHINE
How To Operate the Squeegee
(“S Class” models only)
The squeegee wipes the fl oor while the vacuum motor removes the
dirty solution from the fl oor. Use your right hand to lower or raise the
squeegee handle. To operate the squeegee, follow this procedure:
1. To lower the squeegee and start the vac motor move the
squeegee lever to the right and down. See fi gure #12.
2. To raise the squeegee, lift the squeegee lever up. See fi gure
#13.
Note: The center position lets the vac motor continue to run
with the squeegee off the fl oor to avoid drips.
How to Fill The Solution Tank
CAUTION!
Make sure water or solution does not enter the opening for the
vacuum motor See fi gure #14.
The solution tank can be fi lled in the front or through the clear drain
hose at the rear of the machine. To fi ll the solution tank follow this
procedure:
1. Remove the solution tank lid. See fi gure #15.
2. Fill the solution tank with water.
3. Add a cleaning chemical to the water. for the correct amount,
follow the directions shown on the container.
Figure #12
Figure #13
Figure #14
WARNING!
Water solutions or cleaning materials used with this type of
machine can leave wet areas on the fl oor 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 fl ammable materials and vapors. Do not
use with or near fl ammables such as gasoline, grain dust,
solvents, and thinners. Only use a cleaning concentration
recommended by the chemical manufacturer.
WARNING!
Nilfi sk Alto recommends a maximum water temperature of
120°F(49°C)
4. Replace the solution tank lid.
5. When fi lling the machine from the rear, position the clear drain
hose against bracket and insert hose as shown in fi gure 16.
Solution level can be viewed from the back of the machine.
Figure #15
Figure #16
Nilfi sk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795 FORM NO. 70935A - 21 -
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