Nilfisk-ALTO SCRUBTEC 8 User manual

Instructions for Use-Original Instructions
10/08 revised 4/12 FORM NO. 71492A
Models: 05370E(BOOST 8), 05370G(BOOST 8),
05390E(866), 05400E(871), 05400G(871), 05410E(886),
05420E(871C), 56380673(866)
English Instructions For Use-Original Instructions.......2-27
Parts List............................................................29-66
SCRUBTEC 8
SCRUBTEC 866
SCRUBTEC 871
SCRUBTEC 871C
SCRUBTEC 886

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-2- FORM NO. 71492A Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C
READ THIS BOOK
CAUTION: Read the Operator’s Manual before using the appliance.
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 NilfiskALTO 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 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.
Table of Contents
Operator Safety Instructions....................................................................................................................................................................3
Introduction .............................................................................................................................................................................................4
Machine Specifications............................................................................................................................................................................5
Procedures For Transporting...................................................................................................................................................................6
Symbols Used On SCRUBTEC...............................................................................................................................................................7
Machine Control Panel............................................................................................................................................................................8
Machine Controls and Features..............................................................................................................................................................10
How To Prepare The Machine For Operation..........................................................................................................................................10
How To Operate The Machine.................................................................................................................................................................17
Maintenance............................................................................................................................................................................................21
How To Correct Problems In The Machine..............................................................................................................................................25
Section II Parts and Service Manual
Solution Tank Assembly...........................................................................................................................................................................30-31
Recovery Tank Assembly........................................................................................................................................................................32-33
HandleAssembly (Disc and BOOST Models).........................................................................................................................................34-35
HandleAssembly (Cylindrical Model)......................................................................................................................................................36-37
Electrical BoxAssembly..........................................................................................................................................................................38-39
Squeegee Lift HolderAssembly..............................................................................................................................................................40-41
SqueegeeAssembly (32.5”)....................................................................................................................................................................42-43
SqueegeeAssembly (35”).......................................................................................................................................................................44-45
SqueegeeAssembly (41”).......................................................................................................................................................................46-47
FrameAssembly......................................................................................................................................................................................48-49
Brush HeadAssembly (866)....................................................................................................................................................................50-51
Brush HeadAssembly (871)....................................................................................................................................................................52-53
Brush HeadAssembly (886)....................................................................................................................................................................54-55
Brush HeadAssembly (BOOST 8)..........................................................................................................................................................56-57
Brush HeadAssembly (871C).................................................................................................................................................................58-59
Chemical Mixing Kit.................................................................................................................................................................................60-61
Electrical Schematic................................................................................................................................................................................62-63
Connection Diagram................................................................................................................................................................................64
Accessories.............................................................................................................................................................................................65
MODIFICATIONS
Modifications and additions to the cleaning machine which affect capacity and safe operation shall not be performed by the customer or user without
prior written approval from Nilfisk-Advance Inc. Unapproved modifications will void the machine warranty and make the customer liable for any
resulting accidents.
revised 4/12

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Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C FORM NO. 71492A - 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 your
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 NilfiskALTO 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 bat-
teries. Do not smoke around the machine. Charge the batteries only in an area with good ventilation. Make
sure that you unplug theAC 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”.
WARNING: Maintenance and repairs performed by unauthorized personnel could result in damage or injury. Maintenance and
repairs must be performed by authorized NilfiskALTO 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.

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-4- FORM NO. 71492A Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C
WARNING: Electrical components of this machine can “short-out” if exposed to water or moisture. Keep the electrical compo-
nents of the machine dry. Wipe the machine down after each use. For storage, keep the machine in a dry building.
WARNING: To reduce the risk of fire, when replacing fuse, replace only with same type and rating of fuse that comes with ma-
chine.
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
ProtectionAgency has established certain regulations regarding discharge of waste water. Also, city and state regula-
tions 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 NilfiskALTO parts for replacement.
Introduction :
Scrubtec 866, 871, 886, BOOST 8 and 871C automatic scrubbers are efficient and superior floor cleaning machines. The Scrubtec
886 uses two brushes or pads to scrub a path 86 cm wide. The Scrubtec 871 uses two brushes or pads to scrub a path 71 cm wide.
The Scrubtec 866 uses two brushes or pads to scrub a path 66 cm wide. The Scrubtec BOOST 8 uses one pad or brush to scrub a
path 71 cm wide. The Scrubtec 871C uses two brushes to scrub a path 71 cm wide. Asqueegee wipes the floor while the vacuum
motor removes the dirty solution from the floor in one pass.
Scrubtec 866, 871, 886, BOOST 8 and 871C automatic scrubbers come complete with three battery connector cables, one battery
cable, one battery charger and one operator’s manual.

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Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C FORM NO. 71492A - 5 -
Machine Specifications
Model Scrubtec 866 Scrubtec 871 Scrubtec 886
Pad / Brush Size (2) 13” (33 cm) (2) 14” (36 cm) (2) 17” (43 cm)
Brush Motor (s) (2) 3/4 hp (.56 kw) (2) 3/4 hp (.56 kw) (2) 3/4 hp (.56 kw)
200 RPM 200 RPM 200 RPM
Cleaning Width 26” (66 cm) 28” (71 cm) 34” (86.4 cm)
Brush Pressure 1
st - 80 lbs. (36 kg) 1st - 80 lbs. (36 kg) 1st - 80 lbs. (36 kg)
2nd - 150 lbs. (68 kg) 2nd - 150 lbs. (68 kg) 2nd - 150 lbs. (68 kg)
Brush Retention Gimbal Gimbal Gimbal
Brush Head Steel Deck w/ Bristle Skirt Steel Deck w/ Bristle Skirt Steel Deck w/Bristle Skirt
Water Retention
Squeegee Width 32.5” (81 cm) 35” (89 cm) 41” (107 cm)
Width of Machine 28” (71 cm) Head 30” (76 cm) Head 35.7” (91 cm) Head
23.5” (60 cm) Body 23.5” (60 cm) Body 23.5” (60 cm) Body
Length of Machine 61” (155 cm) 62” (157 cm) 64” (162 cm)
Height of Machine 44” (112 cm)
Weight w/250Ah batteries 796 lbs. (361.1 kg) 800 lbs. (362.9 kg) 791 lbs. (358.8 kg)
and full solution tank
Power Supply 24 volt, (4 - 6 volt batteries)
Vacuum Motor .75 hp (550W), 3 stage, tangential discharge
Vacuum Motor Protection Electronic Float Shut-Off
Solution Tank 23 gallons (87 liters)
Solution Fill Rear Fill with Bucket or Hose
Solution Flow 0 - 1 gal/min (0 - 3.8 liters/min)
Recovery Tank 23 gallons (87 liters)
Motor Traction .44 hp (.33 kw)
Speed Forward 0 - 260 ft/min (0 - 4.8 km/h)
Speed Reverse 0 - 174 ft/min (0 - 3.2 km/h)
Drive Wheel (2) 10.24” (260 mm) x 3.35” (85 mm) Light Gray, Non-Marking, Foam Filled
Caster (2) 3.94” (10 cm) Polyurethane
Squeegee Material Urethane Front Blade and Rear Blade
Cleaning Grade 2 %
Charger On Board, 24 volt, 25 amp
Vibration @ handle <2.5m/s2
Sound test @ operator’s ear 65 dBA 65 dBA 67 dBA
Model Scrubtec 871 C Scrubtec BOOST 8
Pad / Brush Size (2) 5.75” x 28” (14.6 x 69cm) 14” x 28” (35.6 x 71cm)
Brush Motor (s) (2) .81 hp (.6 kw) 3/4 hp (.56 kw)
613 RPM 2250 RPM
Cleaning Width 28” (71 cm) 28” (71 cm)
Brush Pressure 80 lbs. (36 kg) 1st - 65 lbs. (29.5 kg)
2
nd - 125 lbs. (56.7 kg)
Brush Retention N/A Hook & Loop
Brush Head Side Skirts N/A
Water Retention
Squeegee Width 35” (89 cm) 35” (89 cm)
Width of Machine 30.69” (78 cm) Head 28.75” (73 cm) Head
23.5” (60 cm) Body 23.5” (60 cm) Body
Length of Machine 59.5” (151 cm) 60.5” (154 cm)
Height of Machine 44” (112 cm)
Weight w/250Ah batteries 792 lbs. (359.3 kg) 794 lbs. (360.2 kg)
and full Solution Tank
Power Supply 24 volt, (4 - 6 volt batteries)
Vacuum Motor .75 hp (550W), 3 stage, tangential discharge
Vacuum Motor Protection Electronic Float Shut-Off
Solution Tank 23 gallons (87 liters)
Solution Fill Rear Fill with Bucket or Hose
Solution Flow 0 - 1 gal/min (0 - 3.8 liters/min) Normal BOOST Scrubbing .12 gal/min (.45 liters/min),
Full range .0 - .65 gal/min (0 -2.5 liters/min)
Recovery Tank 23 gallons (87 liters)
Motor Traction .44 hp (.33 kw)
Speed Forward 0 - 260 ft/min (0 - 4.8 km/h)
Speed Reverse 0 - 174 ft/min (0 - 3.2 km/h)
Drive Wheel (2) 10.24” (260 mm) x 3.35” (85 mm) Light Gray, Non-Marking, Foam Filled
Caster (2) 3.94” (10 cm) Polyurethane
Squeegee Material Urethane Front Blade and Rear Blade
Cleaning Grade 2 %
Charger On Board , 24 volt, 25 amp
Vibration @ handle <2.5m/s2
Sound test @ operator’s ear 71 dBA 63 dBA

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-6- FORM NO. 71492A Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C
PROCEDURES FOR TRANSPORTING
How To Put The Machine In AVan 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.
5. Remove brush housing, pad drivers or brushes if transporting disc machine.
6. Turn key switch “ON”.
7. Align the machine on a level surface, ten (10) feet in front of the ramp.
8. Put the traverse speed switch in the “HI” position.
9. Press one or both forward switches.
10. Push the machine to the top of the ramp.
11. Turn the key switch “OFF”.
12. Fasten the machine to the vehicle.
How To Remove The Machine From AVan 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 in 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 and other removed components, after the machine is unloaded and ready to use.

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Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C FORM NO. 71492A - 7 -
SYMBOLS USED ON SCRUBTEC
Hazard Alert Symbol
WARNING!
Carefully read all instructions before
performing any procedure.
WARNING!
Do not use the machine on slopes
exceeding the specifications.
WARNING!
Do not wash the machine with direct
or pressurized water jets.
Charge/Battery Meter
Chemical Mixing Control
(Optional)
On/Off Key Switch
Traverse Speed Control
“One Touch” Control
Additional Brush Pressure
(Not Available on Cylindrical)
Vacuum On/Off
Solution Control

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-8- FORM NO. 71492A Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C
MACHINE CONTROL PANEL
Key Switch (See Figure 1, 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 #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.
One Touch Control Button (See Figure 1, Item “C”)
The one touch control button raises and lowers the brush head assembly, starts and stops the vacuum motor automatically. Press the one touch
control button once and the brush head assembly lowers to the floor and the vacuum motor turns “ON” (brush head and vacuum LEDs illuminate
green). The brush motors start when the brushes are down and the forward palm button is depressed. Press the one touch control button again and
the brush head assembly raises, the vacuum motor will remain on for 10 seconds and then shut “OFF”.
Increase Brush Pressure Button (See Figure 1, Item D)
This button 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 one touch control button (Item “C”). This will lower the brushes to the normal scrub
position. To increase brush pressure, press the button (Item “D”). The LED above the button will illuminate yellow. Press the button (Item “D”) again
and the brushes will return to normal scrub (yellow LED will turn “OFF”). NOTE: Increase brush pressure is not available on cylindrical machine.
Vacuum Motor Button (See Figure 1, Item “E”)
The vacuum motor button turns the vacuum motor “ON” or “OFF”, regardless of brush head assembly position. The green LED will illuminate when
the vacuum motor is “ON”.
Solution Control Buttons (See Figure 1, Item “F & G”)
The solution control buttons regulate the flow of cleaning solution to the floor. The normal scrub solution setting is indicated by two green bars on the
meter. On cylindrical machines, with most floor conditions, the solution setting should be set one step higher. To increase the flow, press the solu-
tion flow button “G” (+) until the desired flow is reached. To decrease the flow, press the solution flow button “F” (-) until the desired flow is reached.
To shut off the solution, press the solution flow button “F” (-) until no indicators are visible on the display. NOTE: No solution will flow when the
machine does not traverse.
Forward Palm Buttons (See Figure 1, Item “H”)
The forward palm buttons turn the traverse motor “ON” and if the brush motors are in the down position, it also activates the brush motors and solu-
tion control module. Either the right or the left palm button can be used.
Reverse Push Button (See Figure 1, Item “I”)
The reverse push button, when used in conjunction with one of the forward palm buttons, causes the machine to reverse direction. The reverse
speed is 67% of the forward speed.
Charge / Battery Meter (See Figure 1, Item “J”)
The charge / battery meter indicates the battery is being charged when the charger is plugged into anAC outlet. It also indicates the amount of
charge that is left in the batteries while the machine is in use. When the charge gets too low the brush/pad motors will shut off.
Circuit Breakers (See Figure 1, Item “K & L”)
The circuit breakers for the brush motors are located on the control panel. 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 (Optional) (See Figure 1, Item “M”)
The hour meter indicates the number of hours the machine has operated. It runs only when the machine is moving forward or reverse.
Chemical Mixing Control (Optional) (See Figure 1, Item “N”)
The chemical mixing control regulates the amount of concentration of cleaning chemical mixed with the clear water from the solution tank. Turning
the chemical mixing knob clockwise increases the concentration of chemical.

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Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C FORM NO. 71492A - 9 -
Figure 1
MACHINE CONTROL PANEL
I
H
DE
C
FGN
J
M
H
B
K
L
A

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-10- FORM NO. 71492A Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C
Figure 2
Figure 3
Figure 4
Figure 5
FRONT
MACHINE CONTROLS AND FEATURES
Squeegee Lift Handle (Manual Squeegee Lift) (See figure 2)
The squeegee lift handle is located below the control handles in the center. It is
used to raise or lower the squeegee.
Float Shut Off (See Figure 3).
The shut-off switch for the vac motor is located in the recovery tank. It automati-
cally turns off the vac motor when the recovery tank is full.
HOW TO PREPARE THE MACHINE
FOR OPERATION
How To Install The Batteries
This 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 to it’s full open position. See
figure 4.
CAUTION: Before raising the tank, be sure tank is
empty.
WARNING: Do not operate the machine while the
recovery tank is in the open position. The
tank can be accidentally bumped and it may
slam shut.
4. Place the batteries in the tray as shown in Figure 5.
WARNING: The batteries are heavy. Lifting batteries
without help could result in an injury. Get
help to lift the batteries.
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 battery cable assembly
as indicated. See figure 5.
6. Join the connector from the battery pack to the connector on the control
panel.
7. Close recovery tank by slowly lowering the tank.
WARNING: Never charge any battery with an unsuitable
battery charger. Carefully follow the instruc-
tions by the manufacturer of the batteries
and battery charger.
revised 9/10

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Figure 5A
EF
G
DCB A
HOW TO PREPARE THE MACHINE
FOR OPERATION
How to program battery charger (WET orAGM batteries):
According to the type of batteries (WET orAGM), set the machine and
electronic board of the battery charger as follows:
Charger Setting
1. Turn the key switch “ON” (see figure 5A, itemA) and in the very
first seconds of machine operation pay attention to the following:
• If the green warning light (item B) is flashing, the charger is
set toAGM.
• If the yellow warning light (item C) is flashing, the charger is
set to GELEXIDE.
• If the red warning light (item D) is flashing, the charger is set
to WET.
2. If the setting is to be changed, perform the following procedure:
a. Turn the key switch “OFF”.
b. Press and hold the buttons (items E and F) at the same time,
then turn the key switch (itemA) “ON”.
c. Continue to hold the buttons (items E and F) until the battery
meter LED light turns “ON” and “OFF” and then release both
buttons.
d. Within 3 seconds, toggle the button (item F) to advance the
green bar (item G) to the desired charger setting (see green
bar position for charger settings below):
Green bar setting (item G)
• 1st green bar - WET@ 25 amps, 250 & 330 ah batteries
(4 RED blinks).
• 2nd green bar - GEL/AGM @ 25 amps, 260 & 312AGM (4
GREEN blinks).
• 3rd green bar - GELEXIDE @ 25 amps (4 YELLOW
blinks).
• 4th green bar - WET@ 15 amps (2 RED blinks).
• 5th green bar - GEL/AGM @ 15 amps (2 GREEN blinks).
• 6th green bar - GELEXIDE @ 15 amps (2 YELLOW
blinks).
e. Once proper battery charger profile is selected, wait until bat-
tery LED light quits flashing and stays on before turning key
switch “OFF”.
f. Repeat step 1 to verify that proper charger profile was pro-
grammed for battery type (WET or GEL).
NOTE: Charge the batteries before using the
machine.

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Correct Level
Figure 7
Figure 6
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 electrolyte each time you charge the
batteries. See figure 6.
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 batteries. 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 bicarbonate of soda to get into batteries.
3. Keep the batteries charged.
4. To drain battery compartment: (See figure 7)
a. Always wear protective eye protection and protective clothing.
b. Add a weak solution of ammonia or bicarbonate of soda solution to
battery compartment to neutralize any spilled acid.
c. Locate drain hose behind the transaxle.
d. Place hand behind flange and open valve.
e. When empty, close valve.
f. Neutralize any acid spills with ammonia or bicarbonate of soda.

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Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C FORM NO. 71492A - 13 -
Figure 8
Figure 9
HOW TO PREPARE THE MACHINE
FOR OPERATION
How To Charge The Batteries
WARNING: Charging the batteries in an area without ade-
quate 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. 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 and
rotate the tank support bracket, located in the solution tank (see
figure8). Slowlylowerthe recoverytank and let it rest onthesup-
portbracket(seefigure9). Toclosethetank,liftupontherecovery
tank,rotatethesupportbracketdown,thenslowlylowerthetankto
the closed position.
CAUTION: Before raising tank, be sure tank is empty.
WARNING: Donotoperatethemachinewhiletherecovery
tank is in the open position. The tank can be
accidentally bumped and it may slam shut.
3. Connect the battery chargerAC cord located at the rear of the ma-
chine to an appropriate wall receptacle.
4. Observeindicatorlightson the charger/battery metertoensurethe
charging process has started. Red, yellow and green lights indi-
cate state of charge. Steady on green light indicates the batteries
are fully charged.
NOTE: Makesureyouplugintoacircuitthatisnotloadedbyotherequip-
ment. Wall breakers may be tripped and no charge will occur.
WARNING: Never charge any battery with an unsuitable
battery charger. Carefully follow the instruc-
tions given by the manufacturer of the batter-
ies and battery charger.
NOTE: To prevent permanent damage to the batteries, avoid their com-
pletedischarge. Never leavethebatteriescompletely discharged,evenif
the machine is not being used. When recharging the batteries, keep the
recovery tank open. Check the level of the electrolyte and if necessary
top off with distilled water.
revised 9/10

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-14- FORM NO. 71492A Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C
Figure 10
Figure 11
HOW TO PREPARE THE MACHINE
FOR OPERATION
How To Install The Brush Or Pad (BOOST Machine)
To install the brush or pad on the machine, follow this
procedure:
1. Turn the key switch “ON”.
2. Put the brush head assembly 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 10.
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 (BOOST Machine)
To remove the brush or pad from the machine, follow this procedure:
1. Turn the key switch “ON”.
2. Put the brush head assembly 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 11.

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Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C FORM NO. 71492A - 15 -
Figure 12
Figure 13
HOW TO PREPARE THE MACHINE
FOR OPERATION
How To Install The Brushes Or Pad Drivers
On The Disc Machine
To install the brushes or pad drivers on the machine,
follow this procedure:
1. Turn the key switch “ON”.
2. Put the brush head assembly in the “UP” position.
3. Turn the key switch “OFF”.
4. Unlatch right and left brush housings and remove them. See
figure 12.
5. Put a brush or pad driver under the brush motor plate. See
figure 13.
6. Align the lugs on the motor gimbal with the slots in the brush
gimbal.
7. Pull the brush up until the gimbal locks.
8. Repeat steps 5, 6 and 7 to install the second brush or pad driv-
er.
9. Reinstall right and left brush housings and latch front cover.
DANGER: Operatinga machine thatis not completely
or fully assembled could result in injury or
property damage. Do not operate this ma-
chine unless it is completely assembled.
Inspect the machine carefully before op-
eration.
How To Remove The Brushes Or Pad Drivers
On the Disc Machine
To remove the brushes or pad drivers from the machine, follow this
procedure:
1. Turn the key switch “ON”.
2. Put the brush head assembly in the “UP” position.
3. Turn the key switch “OFF”.
4. Unlatch right and left brush housings and remove them. See
figure 12.
5. Push down on two sides of the brush or pad driver until the gim-
bals release.

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-16- FORM NO. 71492A Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C
Figure 14
Figure 15
HOW TO PREPARE THE MACHINE
FOR OPERATION
How To Change Or Reverse Bristle Direction
On Cylindrical Machine
To install or reverse bristle direction on the machine, follow this
procedure:
1. Turn the key switch “ON”.
2. Put the brush head assembly in the “UP” position.
3. Turn the key switch “OFF”.
4. Go to the front of the machine and loosen thumb screw on
brush door. See figure 14.
5. Lower door approximately 1/2 inch and remove brush door.
6. Remove brush. See figure 15.
7. Inspectbrushcondition. Ifdamagedorworn,replaceit. Oth-
erwise, turn brush end for end periodically to reverse bristle
direction for better life.
8. Slidebrush onto driver or opposite side and rotate slowly un-
til drive lugs are lined up with brush slots. Push brush all the
way in.
9. Install brush door assembly into brush.
10. Raise door and tighten thumb screw.
11 Repeat for the other brush.
DANGER: Operating a machine that is not com-
pletely or fully assembled could result
in injury or property damage. Do not
operate this machine unless it is com-
pletelyassembled. Inspect the machine
carefully before operation.

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Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C FORM NO. 71492A - 17 -
Figure 16
Figure 17
HOW TO OPERATE THE MACHINE
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 rotate the squeegee lever down. See
figure 16.
2. To raise the squeegee, rotate the squeegee lever up. See
figure 16.
How to Fill The Solution Tank
1. Remove the solution tank lid. See figure 17.
2. If the machine does not have the Chemical Mixing System,
add a cleaning chemical to the solution tank. For the cor-
rect amount of chemical, follow the directions shown on the
container.
3. Fill the solution tank with water.
4. Replace solution tank lid.
WARNING: Water solutions or cleaning materials used
with this type of machine can leave wet ar-
eas on the floor surface. These areas can
cause a dangerous condition for the opera-
tor or other persons. Always put CAUTION
signs near the area you are cleaning.
WARNING: Machines can ignite flammable materi-
als and vapors. Do not use with or near
flammables such as gasoline, grain dust,
solvents, and thinners. Only use a clean-
ing concentration recommended by the
chemical manufacturer.
WARNING: NilfiskALTO recommends a maximum
water temperature of 120°F(49°C)

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-18- FORM NO. 71492A Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C
GREEN
BLUE
YELLOW
RED
Figure 19
Figure 18A
Figure 18B
HOW TO OPERATE THE MACHINE
How To Operate The Chemical Mixing System (Optional)
The chemical mixing system is designed to automatically mix the
cleaning chemical directly from the manufacturer’s chemical contain-
er into the clear water coming from the solution tank. The chemical
control knob on the control panel is used to select the desired ratio
according to the recommendation of the chemical manufacturer and
the application requirements. The ratio settings are shown in figure
19.
CAUTION: Do not operate the chemical pump dry.
If the chemical container is empty, make
sure the chemical control is in the off
position.
To operate the chemical mixing system, follow this procedure:
1. Select the proper cleaning chemical for scrubbing applica-
tion.
2. Set the chemical knob to the recommended setting per the
chemical manufacturer.
3. Make sure the recovery tank is empty and then open the
recovery tank.
4. Position the manufacturer’s chemical container into the
bracket located at the front right side of the solution tank.
See figure 18A& 18B
5. Remove container cap and insert bottle adapter and
tighten cap.
6. Slowly close the recovery tank.
NOTE: With the knob turned fully counterclockwise, only
water will be delivered to the floor.

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Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C FORM NO. 71492A - 19 -
Figure 20
AA
B
C
HOW TO OPERATE THE MACHINE
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 danger-
ous 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: Nilfisk ALTO 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 direc-
tion.
To move the machine, follow this procedure:
1. Release the parking brake (if equipped with machine).
2. Turn the key switch to the “ON” position
3. Raise the brush.
4. Raise the squeegee.
5. Wheneither theleftor rightforward palmbuttons(figure20,itemA)
are pushed in, the machine will go forward.
6. Control the speed of traverse by using the traverse speed control
knob (figure 20, item C).
7. To stop, release the forward palm buttons.
8. To reversethemachine, push in the white reverseswitch(figure20
item B) and either the right or left forward palm buttons (figure 20
itemA) at the same time.
9. To stop, release the forward palm buttons.
10. To turn the machine, push the rear of the machine to the side.
11. Whenyoustop themachine, turnthe keyswitch“OFF”, removethe
key and set the parking brake (if equipped).

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-20- FORM NO. 71492A Nilfisk ALTO Operator’s Manual (EN) - SCRUBTEC 866, 871, 866, Boost 8 and 871C
HOW TO OPERATE THE MACHINE
How To CleanA 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 (if equipped with machine.)
2. Put the water and a cleaning chemical in the clean solution tank.
3. Release the parking brake (if equipped with machine.)
4. Turn the key switch “ON”.
5. Lower the squeegee.
6. Press the one touch control button to lower the brush head assembly
and start vacuum motor.
7. 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 CleanA Very Dirty Floor
To clean a very dirty floor, follow this procedure:
1. Apply solution to the floor.
2. Do not lower the squeegee. Shut 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
and turn vacuum motor “ON”.
5. Pick up all the solution with the squeegee.