Nilfisk-ALTO Scrubtec 770 L User manual

Form No. 70935A 11/07, Revised 12/08 Printed in the U.S.A.
SCRUBTEC 770 S
SCRUBTEC 770 L
SCRUBTEC 784 S
SCRUBTEC 784 L
SCRUBTEC 795 S
SCRUBTEC 795 L
U.S. Patent No. 6,760,947; No. 6,105,192; No. RE39,581 (Deluxe Machines)
Operator's
Manual
READ THIS MANUAL
English (2-30)
Parts List (31-67)
EN

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SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795
Table of Contents
Operator Safety Instructions ............................................................................................................................................................................ 3
Introduction ....................................................................................................................................................................................................... 4
Machine Specifications ..................................................................................................................................................................................... 5
ProceduresForTransporting............................................................................................................................................................................. 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
HowTo Prepare TheMachine For Operation .................................................................................................................................................... 16
How To Install The Batteries........................................................................................................................................................... 16
Battery Maintenance ...................................................................................................................................................................... 17
How To Charge The Batteries......................................................................................................................................................... 18
How To Install The Brushes Or Pad Drivers .................................................................................................................................. 19
How To Remove The Brushes Or Pad Drivers .............................................................................................................................. 19
HowToOperateTheMachine ........................................................................................................................................................................... 20
How To Operate The One Touch System....................................................................................................................................... 20
ReprogrammingOneTouch............................................................................................................................................................ 20
How To Return One Touch To Factory Default Setting ................................................................................................................. 20
HowTo OperateTheSqueegee ...................................................................................................................................................... 21
How To Fill The Solution Tank ........................................................................................................................................................ 21
How To Traverse Machine .............................................................................................................................................................. 22
How To Clean A Floor..................................................................................................................................................................... 22
Maintenance ...................................................................................................................................................................................................... 23
How To Correct A Problem .............................................................................................................................................................................. 28
Common Error Codes (SRUBTEC 770 L, 784 L & 795 L) ................................................................................................................................ 29
Accessories ...................................................................................................................................................................................................... 30
Section II Parts and Service Manual
Solution Tank Assembly ................................................................................................................................................................................... 32
Parts List ........................................................................................................................................................................................ 33
Recovery Tank Assembly................................................................................................................................................................................ 34
Parts List ........................................................................................................................................................................................ 35
Electrical Panel Assembly S Models ................................................................................................................................................................ 36
Parts List ........................................................................................................................................................................................ 37
Electrical Panel Assembly L Models................................................................................................................................................................. 38
Parts List ........................................................................................................................................................................................ 39
Control Panel Assembly ................................................................................................................................................................................... 40
Parts List ........................................................................................................................................................................................ 41
Squeegee Swing Arm Assembly ....................................................................................................................................................................... 42
Parts List ........................................................................................................................................................................................ 43
Squeegee Swing Arm Assembly ....................................................................................................................................................................... 44
Parts List ........................................................................................................................................................................................ 45
Traverse System Assembly............................................................................................................................................................................. 46
Parts List ........................................................................................................................................................................................ 47
Brush Head Assembly ...................................................................................................................................................................................... 48
Parts List ........................................................................................................................................................................................ 49
BrushMotor ....................................................................................................................................................................................................... 50
Gearbox ........................................................................................................................................................................................................ 51
Imperial Transaxle Parts ................................................................................................................................................................................... 52
Control Panel Connection Diagram S Models ................................................................................................................................................... 54
Front of Machine Connection Diagram S Models ............................................................................................................................................. 54
Control Panel Connection Diagram L Models ................................................................................................................................................... 55
Front of Machine Connection Diagram L Models ............................................................................................................................................. 55
Electrical Plate Connection Diagram S Models................................................................................................................................................. 56
Electrical Plate Connection Diagram L Models ................................................................................................................................................. 57
Control Housing Connection Diagram .............................................................................................................................................................. 58
Electrical Schematic S Models.......................................................................................................................................................................... 59
Electrical Schematic (Top) L Models................................................................................................................................................................. 60
Electrical Schematic (Bottom) L Models ........................................................................................................................................................... 61
READ THIS BOOK
Thisbookhasimportantinformationfortheuseandsafeoperationofthismachine. Failuretoreadthisbook
priortooperatingorattemptinganyserviceormaintenanceproceduretoyourNilfiskALTOmachinecould
resultininjurytoyouortootherpersonnel;damagetothemachineortootherpropertycouldoccuraswell.
Youmusthavetraining inthe operationof thismachine beforeusing it. Ifyour operator(s)cannotreadthis
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: Nilfisk ALTO, 2100 Highway 265, Springdale, Arkansas 72764.

Nilfisk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795 - 3 -
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 Nilfisk 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 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.
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 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 Nilfisk ALTO personnel only.

Page -4- Nilfisk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
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SCRUBTEC 770 / 784 / 795
Introduction
Introduction:
NilfiskALTO'snewlydesignedScrubtec795,784&770automatic scrubbers are efficient and superiorfloor
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 floor while the vacuum motor removes the dirty solution from
the floor - all in one pass.
The Scrubtec 795, 784 & 770 automatic scrubbers come complete with six - 6 volt batteries, five battery
connectorcables,two battery cables,eithertwo brushes ortwo pad drivers, andone operator's manual.
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. 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 Nilfisk ALTO 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. 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 Nilfisk ALTO parts are
used on your machine. Always use Nilfisk ALTO parts for replacement.
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.

Nilfisk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795 - 5 -
Machine Specifications
SPECIFICATIONS:
Model Scrubtec 795 S Scrubtec 784 S Scrubtec 770 S
Motor, Vac 1 HP (.74kw) three 1HP (.74kw) three 1HP (.74kw) three
stage tangential stage tagential stage tagential
discharge discharge discharge
Power Supply 36 volt (6-6V batteries) 36 volt (6-6V batteries) 36 volt (6-6V batteries)
250AH, 330AH 250AH, 330AH 250AH, 330AH
SolutionTank 30 gallon (114 liter) 30 gallon (114 liter) 30 gallon (114 liter)
Recovery Tank 30 gallon (114 liter) 30 gallon (114 liter) 30 gallon (114 liter)
Motors, Brush (2) 1 hp PM (.74kw) 1 hp PM (.74kw) 1 hp PM (.74kw)
Motor Traction .50 hp PM (.37kw) .50 hp PM (.37kw) .50 hp PM (.37kw)
Brushes (2) 19 inch (48cm) 17 inch (43cm) 14 inch (36cm)
w/.5" (1.5cm) overlap w/.5" (1.5 cm) overlap w/.5" (1.5 cm) overlap
Brush Speed 200 rpm 200 rpm 200 rpm
Brush Pressure Variable 150 lbs. - 220 lbs. Variable 150 lbs. - 220 lbs. Variable 150 lbs. - 220 lbs.
Speed, Forward Variable to 230 ft./min. Variable to 230 ft./min. Variable to 230 ft./min.
Speed, Reverse Variable to 180 ft./min. Variable to 180 ft./min. Variable to 180 ft./min.
Charger 36V, 21A, 115V/60hz 36V, 21A, 115V/60hz 36V, 21A, 115V/60hz
Length 68.28 inches (173 cm) 67 inches (170 cm) 65.0 inches (165 cm)
Width - Machine 40.33 inches (102 cm) 35.70 inches (91 cm) 30.0 inches (76 cm)
Height 43.75 inches (112cm) 43.75 inches (112 cm) 43.75 inches (112 cm)
CleaningRate 42,000 sq ft/hr 35,000 sq ft/hr 29,700 sq ft./hr
(3,901 sq. m/hr) (3,252 sq. m/hr) (2,750 sq ft./hr)
Cleaning Swath 38 inch (97 cm) 33 inch (84 cm) 28 inch (71 cm)
GradeCleaning 6°Incline 6°Incline 6°Incline
Weight w/Batteries (330AH) 1025 lbs. 465kg 1015 lbs. 460kg 1005 lbs. 456kg
ShippingWeight 1328 lbs. 602kg 1318 lbs. 598kg 1308 lbs. 593kg
w/batteries (330AH)
Noise (EN ISO 3744:1995) <70 dBA <70 dBA <70 dBA
Vibration <2.5 m/s2<2.5 m/s2<2.5 m/s2
(EN ISO 2631-1: 1997 (E))

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SCRUBTEC 770 / 784 / 795
SPECIFICATIONS:
Model Scrubtec 795 L Scrubtec 784 L Scrubtec 770 L
Motor, Vac 1 HP (.74kw) three 1HP (.74kw) three 1HP (.74kw) three
stage tangential stage tagential stage tagential
discharge discharge discharge
Power Supply 36 volt (6-6V batteries) 36 volt (6-6V batteries) 36 volt (6-6V batteries)
250AH, 330AH 250AH, 330AH 250AH, 330AH
SolutionTank 30 gallon (114 liter) 30 gallon (114 liter) 30 gallon (114 liter)
Recovery Tank 30 gallon (114 liter) 30 gallon (114 liter) 30 gallon (114 liter)
Motors, Brush (2) 1 hp PM (.74kw) 1 hp PM (.74kw) 1 hp PM (.74kw)
Motor Traction .50 hp PM (.37kw) .50 hp PM (.37kw) .50 hp PM (.37kw)
Brushes (2) 19 inch (48cm) 17 inch (43cm) 14 inch (36cm)
w/.5" (1.5cm) overlap w/.5" (1.5 cm) overlap w/.5" (1.5 cm) overlap
Brush Speed 200 rpm 200 rpm 200 rpm
Brush Pressure Variable 140 lbs. - 220 lbs. Variable 140 lbs. - 220 lbs. Variable 140 lbs. - 220 lbs.
Speed, Forward Variable to 230 ft./min. Variable to 230 ft./min. Variable to 230 ft./min.
Speed, Reverse Variable to 180 ft./min. Variable to 180 ft./min. Variable to 180 ft./min.
Charger 36V, 21A, 115V/60hz 36V, 21A, 115V/60hz 36V, 21A, 115V/60hz
Length 68.28 inches (173 cm) 67 inches (170 cm) 65.0 inches (165 cm)
Width - Machine 40.33 inches (102 cm) 35.70 inches (91 cm) 30.0 inches (76 cm)
Height 43.75 inches (112cm) 43.75 inches (112 cm) 43.75 inches (112 cm)
CleaningRate 42,000 sq ft/hr 35,000 sq ft/hr 29,700 sq ft./hr
(3,901 sq. m/hr) (3,252 sq. m/hr) (2,750 sq ft./hr)
Cleaning Swath 38 inch (97 cm) 33 inch (84 cm) 28 inch (71 cm)
GradeCleaning 6°Incline 6°Incline 6°Incline
Weight w/Batteries (330AH) 1025 lbs. 465kg 1015 lbs. 460kg 1005 lbs. 456kg
ShippingWeight 1328 lbs. 602kg 1318 lbs. 598kg 1308 lbs. 593kg
w/batteries (330AH)
Noise (EN ISO 3744:1995) <70 dBA <70 dBA <70 dBA
Vibration <2.5 m/s2<2.5 m/s2<2.5 m/s2
(EN ISO 2631-1: 1997 (E))
Machine Specifications

Nilfisk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795 - 7 -
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 2.4m long, and strong enough to support the machine.
2. Make sure the ramp is clean and dry.
3. Put the ramp in position.
4. Removesqueegeeassembly,brushhousings,&brushesorpaddriversbeforeloading.
5. Turn key switch "ON".
6. Align the machine on a level surface 3.1m in front of the ramp.
7. Put the traverse speed switch in the "HI" position.
8. Pressoneor 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 2.4m long and strong enough to support the machine.
3. Make sure the ramp is clean and dry.
4. Put the ramp in position.
5. Unfastenthemachine.
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. Carefullyandslowly, drive themachine to the top ofthe ramp bypressing and holdingeither of theforward
switchesand the reverseswitch.
8. Put the traverse speed switch to the mid range speed setting. As the machine begins to travel down the
ramp, maintaina slow downwardspeed by pressingeither ofthe forward switches.
9. Replacesqueegee assembly, brushhousings,&brushesorpaddriversafterthemachineisunloaded
and ready to use.

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SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795
Squeegee
Up/Down Solution
Control
Hour Meter
Switch
Power
BrushUp/Down
Charge Indicator One Touch Switch
SYMBOLS USED ON SCRUBTEC 770, 784, 795
Hazard Alert Symbol On/Off Key Switch
BrushUp/Down
SolutionControl
AdditionalBrush
Pressure
Charge/Battery
Meter
SYMBOLS USED ON
SCRUBTEC 770 S, 784 S & 795 S
SCRUBTEC 770 L, 784 L, 795 L
Traverse Speed Control
SYMBOLS USED ON
SCRUBTEC 770 S, 784 S & 795 S SYMBOLS USED ON
SCRUBTEC 770 L, 784 L & 795 L

Nilfisk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795 - 9 -
SYMBOLS USED ON SCRUBTEC 770, 784, 795
71018A
71015A
71017A
WARNING
READOPERATOR'S
MANUALBEFORE
OPERATINGTHIS
MACHINE
RISKOFFIRE
• 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,
CANCAUSESEVERE
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.

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SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795
MACHINE CONTROL PANEL SRUBTEC 770 S, 784 S & 795 S
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 floor. 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 floors. To increase brush pressure, first 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 flow of cleaning solution to the floor. To increase the flow turn the knob
clockwise. To decrease the flow, 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 (See Figure #1, Item "H")
The charge/battery meter indicates the amount of charge that is left in the batteries while the machine is in use. When
the battery pack gets too low the red light will begin flashing and the brush/pad motors will shut off.
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 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.
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.

Nilfisk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795 - 11 -
Figure #1
MACHINE CONTROL PANEL SRUBTEC 770 S, 784 S & 795 S
F
GB
F
A
H
I
J
K
L
MN
ECD

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SCRUBTEC 770 / 784 / 795
MACHINE CONTROL PANEL SRUBTEC 770 L, 784 L & 795 L
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 squee-
gee will lower and the vacuum motor will turn on when the switch is placed in the lower position. To raise the squee-
gee, 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 flow (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 flow switch regulates the flow of chemical solution to the floor. To increase the flow, push the solution
flow switch in the down (+) position until desired flow is reached. To decrease the flow, push the solution flow switch
in the up (-) position until the desired flow is reached. To shut off the solution, push the solution flow switch in the up
(-) position until no indicators are visible on the display. NOTE: DO NOT run dry! NOTE: No solution will flow 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
flashing 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.)

Nilfisk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795 - 13 -
MACHINE CONTROL PANEL SRUBTEC 770 L, 784 L & 795 L
Figure #2
FGBF
A
H
I
E
D
C
MLKJ
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 "L" and
"M" - Brush Motors (35A); Item N - Key Switch (5A).
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.

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SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795
Display Screens For SCRUBTEC 770 L, 784 L, 795 L
Position arrow indicating current position
of squeegee (up or down)
Indicators are on all
the time showing
currentsettings.
Screens
Available
to Operator
“Battery” blinks when
low voltage occurs.
Water “droplets” off when solution is off and
they are flashing when solution is on.
Arrowsindicatingvacuumstatus.
They are flashing when vac is on
and off when vac is off.
SCREEN1
SCREEN2
Example
SCREEN3(Diagnostic)
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".
3

Nilfisk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795 - 15 -
MACHINE CONTROLS & FEATURES
Squeegee Lift Handle ("S Class" models only) See
Figure #3a, 3b, & 3c.
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.
CAUTION: Do not activate the brake while the ma-
chine 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 #3a
Figure #3b
Figure #3c
Figure #5
Figure #4
EN

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SCRUBTEC 770 / 784 / 795
HOW TO PREPARE THE MACHINE
FOR OPERATION
How To Install The Batteries
TheScrubtec machines usesix 6-voltbatteries. The
batteries are located in the battery compartment
undertherecoverytank.
ToInstallthebatteries,followthisprocedure:
1. Turnkeyswitch off.
2. Make sure both tanks are empty.
3. Disconnectthehoses from therecovery tank
(uppertank)&unplugthevacmotorandfloat
switch.
4. Removethetanksupportbracket.
5. Removetherecoverytank.
6. Place the batteries in the solution tank as
showninfigures 6a and6b.
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.
NOSMOKING!
7. Connectthebatterycablesbetween
batteries and install long battery cable
assembly as indicated. See figure 6a and 6b.
8. Install the tank, reconnecting hoses and
plugginginvacmotorand float switch
connectors. Install tank support bracket.
NOTE: Chargethebatteriesbeforeusingthe
machine.
Figure #6a
Figure #6b
38722B
38722B
38722B
38720B
38720B
38722B
38720B
38722B
38722B

Nilfisk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795 - 17 -
Battery Maintenance
Theelectricalpowertooperatethemachinecomesfromthe
storagebatteries. Storagebatteriesneedpreventivemain-
tenance.
WARNING: Workingwithbatteriescanbedan-
gerous. Always wear eye protec-
tion and protective clothing when
working near batteries.
NOSMOKING!
To maintain the batteries in good condition, follow these
instructions:
1. Keeptheelectrolyteatthe correct level. The correct
levelisbetween6.35mmbelowthebottomofthetube
ineach cell and above thetops of the plates. Check
the level of the electrolyte each time you charge the
batteries. See figure #7.
NOTE: Checkthelevelofelectrolytepriortochargingthe
batteries. Besuretheplatesineachcellarecoveredwith
electrolyte . Do not top off the cells prior to charging the
battery. Electrolyteexpandsduringcharging. Asaresult,
theelectrolytecouldoverflow fromthecells. Alwaystopoff
the cells with distilled water after charging.
CAUTION: Irreversible damage will occur to
the batteries if the electrolyte level
doesnotcovertheplates. Keepthe
electrolyte at the correct level.
CAUTION: Machine damage and discharge
acrossthetopsofthebatteriescan
occur if the batteries are filled
above the bottom of the tube in
each cell. Do not fill the batteries
uptothebottomofthetubeineach
cell. Wipe any acid from the
machine or the tops of the batter-
ies. Never add acid to a battery
after installation.
CAUTION: Tap water may contain contami-
nants that will damage batteries.
Batteriesmustbere-filledwithdis-
tilled water only.
2. Keep the tops of the batteries clean and dry.
Keeptheterminalsandconnectorsclean.Tocleanthe
top of the batteries, use a damp cloth with a weak
solutionofammoniaorbicarbonateofsodasolution.
Tocleantheterminalsandconnectors,useaterminal
andconnectorcleaningtool. Donotallowammoniaor
bicarbonate of soda to get into batteries.
3. Keepthebatteriescharged.
Figure #7
HOW TO PREPARE THE MACHINE
FOR OPERATION
Correct fill level

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SCRUBTEC 770 / 784 / 795
How To Charge The Batteries
WARNING: Charging the batteries in an area
without adequate ventilation could
resultinanexplosion. Topreventan
explosion, charge the batteries only
inan 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. 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
figure#8). Toclosethetank,pulluponthearmandthen
slowly lower the tank to the closed position.
CAUTION: Before raising tank, be sure tank is
empty.
WARNING: Do not operate or perform
maintenance on the machine while
the recovery tank is in the open
position. The tank can be
accidentallybumpedanditmayslam
shut.
3. Put the charger on a flat surface. Make sure the vents
on the sides are at least two inches away from walls
andother objects. Make sure there areno objects near
the vents on the bottom of the charger.
4. Disconnect the battery pack connector from the
batteries.
5. ConnecttheDC connector on the charger to thebattery
pack connector. See figure #8A.
6. Connectthebattery charger AC cord located at therear
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: Makesureyouplug intoacircuitthat isnotloaded by
other equipment. Wall breakers may be tripped and no
charge will occur.
WARNING: Never charge a GEL battery with an
unsuitablebatterycharger. Carefully
follow the instructions given by the
manufacturer of the batteries and
battery charger.
NOTE:Topreventpermanentdamagetothebatteries,avoid
their complete discharge. Never leave the batteries
completely discharged, even if the machine is not being
used. Whenrechargingthebatteries,keeptherecoverytank
open. Afterevery20rechargingcycles,checkthelevelofthe
electrolyte and if necessary top off with distilled water.
HOW TO PREPARE THE MACHINE
FOR OPERATION
Figure # 8
Figure 8A

Nilfisk ALTO Operator's Manual - SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795SCRUBTEC 770 / 784 / 795
SCRUBTEC 770 / 784 / 795 - 19 -
How To Install The Brushes Or Pad Drivers
Toinstall the brushes or paddrivers onthe machine,
followthisprocedure:
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 figure #9.
6. Putabrushorpaddriverunderthebrushmotorplate.
Seefigure#10.
7. Alignthelugsonthemotorgimbalwiththeslotsinthe
brushgimbal.
8. Pull the brush up until the gimbal locks.
9. Repeat steps 6, 7, and 8 to install the second brush
orpaddriver.
How To Remove The Brushes Or Pad Drivers
To remove the brushes or pad drivers from the machine,
followthisprocedure:
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. Pushdownontwosidesofthebrushorpaddriveruntil
thegimbals release.
HOW TO PREPARE THE MACHINE
FOR OPERATION
Figure #9
Figure #10

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SCRUBTEC 770 / 784 / 795
HowtoOperatetheOneTouchSystem("LClass"modelsonly)
Onetouchcleaning isa feature onthe newScrubtecWalk-behind
Scrubber. The factory defaults for this setting are two bars of
brush pressure and four bars for solution flow and squeegee in
the down position.
1. Press and release the green button for all cleaning
functions to begin, see figure #11, item A.
2. The squeegee and brush head lower to the floor 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 figure #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 specifications.
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 intendedthat this bedone while traversing. If you
stop and do it, some solution can be left on the floor.
ReprogrammingOneTouch
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
LCDdisplayflash,thenreleasethebutton. NOTE: Thetime
required should be approximately 5 seconds.
3. Whenyouactivateor deactivate theonetouch, itwillnowbe
set to your preference for cleaning. These settings will
remain until you disconnect power or reprogram them.
NOTE:Whenprogrammingonetouch,besuresqueegee
is in automatic (middle) position, otherwise you may
program squeegee either up or down all the time.
Howto Return One Touch toFactory 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 flash two times (5 seconds between flashes),
see figure 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
barsof brush pressure. NOTE: The squeegee vac switch
mustbeinthemiddlepositionfordefaultsettingstowork.
HOW TO OPERATE THE MACHINE
Figure #11
A
B