Nilfisk-Advance SC4000 User manual

Model No:
56120003 (710C), 56120004 (710D), 56120006 (810C), 56120007 (860D),
56120401 (710C HP), 56120402 (710D HP), 56120403 (810C HP), 56120404 (860D HP)
SC4000
Instructions for Use Instructions for Use
Original Instructions
Kullanim Talimatlari
9/2022 revised 1/2023 REV B
Form no. 56091273
A-English
B-Türkçe

A - 2 Nilsk SC4000 - 56091273 9/2022
INSTRUCTIONS FOR USEA - ENGLISH
TABLE OF CONTENTS
Introduction................................................................................. 3
Parts and Service......................................................................3
Modications .............................................................................3
Name Plate................................................................................ 3
Uncrate the Machine ................................................................. 4
Transporting the Machine..........................................................4
Cautions and Warnings.............................................................. 5
Regulatory................................................................................... 7
Know Your Machine.................................................................... 8
Control Panel........................................................................... 10
Information Menu Display........................................................ 12
Magnetic SmartKey™ .............................................................14
Prepare the Machine for Use................................................... 14
Lead-Acid Batteries.................................................................14
Lead-Acid Battery Installation.................................................. 14
Install the Brushes (disc system)............................................. 16
Install the Brushes (cylindrical system) ................................... 17
Filling the Solution Tank ..........................................................18
Solution Tank Indicator............................................................ 18
Squeegee Installation..............................................................19
Detergent System Preparation (with Ecoex) .........................20
Fill the Detergent Cartridge.................................................. 20
Detergent System Purge (with EcoFlex).............................. 21
Detergent System Use (Ecoex)............................................. 22
Operating the Machine............................................................. 25
Starting the Machine ............................................................... 25
Stopping the Machine.............................................................. 25
Operating the Machine - Continued ........................................ 26
Wet Vacuuming ....................................................................... 27
After Use .................................................................................28
Maintenance.............................................................................. 29
Maintenance Schedule............................................................29
Cleaning Recovery Tank ......................................................... 30
Cleaning Solution Filter ........................................................... 30
Lubricating the Machine .......................................................... 31
Electromagnetic Brake ............................................................31
Charging Wet Lead-Acid Batteries.......................................... 32
Charging GEL/AGM (VRLA) Batteries .................................... 33
Charging Other Types of Batteries.......................................... 33
Squeegee Maintenance ..........................................................34
Squeegee Adjustment .............................................................34
Side Blade Maintenance ......................................................... 36
Side Blade Height Adjustment.................................................36
Side Blade Pressure Adjustment - Cylindrical Adjustable Only38
Side Blade - Double Scrub Position ........................................ 38
Troubleshooting ....................................................................... 39
General Machine Troubleshooting .......................................... 39
Fault Code Display..................................................................40
Fault Code History................................................................... 41
Specications ........................................................................... 42
Accessories / Options.............................................................. 42
Solution Flow Rates ................................................................ 42
Technical Specications .......................................................... 43

9/2022 A - 3 56091273 - Nilsk SC4000
ENGLISH - AINSTRUCTIONS FOR USE
INTRODUCTION
This manual will help you get the most from your Nilsk Scrubber. Read it thoroughly before operating the machine.
Note: Bold numbers in parentheses indicate an item illustrated on pages 8 – 11.
This machine is intended for commercial use, for example in hotels, schools, factories, shops, ofces and rental businesses. The Nilsk SC4000
is a battery powered oor cleaning machine.
WARNING:
The operation of this machine is strictly reserved to trained and qualied operators.
CAUTION!
• Use extreme CAUTION when operating this machine. Be certain that you are thoroughly familiar with all operating
instructions before using this machine. If you have any questions, contact your supervisor or your local Nilsk Dealer.
• If the machine malfunctions, do not try to correct the problem unless your supervisor directs you to do so. Have a
qualied company mechanic or an authorized Nilsk Dealer service person make any necessary corrections to the
equipment.
• Use extreme care when working on this machine. Loose clothing, long hair, and jewelry can get caught in moving parts.
Turn the Power Switch OFF and remove the magnetic key before servicing the machine. Use good common sense,
practice good safety habits and pay attention to the yellow decals on this machine.
• Drive the machine slowly on inclines.
• The maximum rated incline for scrubbing is 9% (5°). The maximum rated incline during transport is 16% (9°).
PARTS AND SERVICE
Repairs, when required, should be performed by Nilsk, Inc., who employs factory trained service personnel, and maintains an inventory of Nilsk
original replacement parts and accessories.
Call Nilsk, Inc. for repair parts or service. Please specify the Model and Serial Number when discussing your machine.
MODIFICATIONS
Modications 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 Nilsk, Inc. Unapproved modications will void the machine warranty and make the customer liable for any
resulting accidents.
NAME PLATE
The Model Number (also known as Part Number) and Serial Number of your machine are shown on the Nameplate, located on the rear of the
steering column.
Date of Manufacture “Date Code” is marked on the nameplate. Date Code: A21, means January 2021.
This information is needed when ordering repair parts for the machine. Use the space below to note the Model Number and Serial Number of your
machine for future reference.
MODEL NO. ___________________________________________________________
SERIAL NO. ___________________________________________________________

A - 4 Nilsk SC4000 - 56091273 9/2022
INSTRUCTIONS FOR USEA - ENGLISH
UNCRATE THE MACHINE
When the machine is delivered, carefully inspect the shipping packaging and the machine for damage. If damage is evident, save the shipping
carton (if applicable) so that it can be inspected. Contact the Nilsk Customer Service Department immediately to le a freight damage claim.
Refer to the unpacking instruction sheet included with the machine to remove the machine from the pallet.
TRANSPORTING THE MACHINE
CAUTION!
Before transporting the machine in an open truck or trailer, make sure that . . .
• All tanks are empty.
•All access doors are latched securely.
•Lower scrub deck and squeegee then press Emergency Stop (A) or disconnect batteries to prevent them from raising when the machine is
powered off.
• The machine is tied down securely - see Tie Down Locations (21) in “Know Your Machine”. Only use locations designated as “Tie Down
Locations” to secure the machine during transport. Using any other location of the machine to tie down the machine may cause damage or
injury.
•The machine’s electromagnetic brake is engaged (not manually overridden), see “Electromagnetic Brake” section if necessary.
•The machine is turned off and the magnetic SmartKey™ is removed.

9/2022 A - 5 56091273 - Nilsk SC4000
ENGLISH - AINSTRUCTIONS FOR USE
CAUTIONS AND WARNINGS
SYMBOLS
Nilsk uses the symbols below to signal potentially dangerous conditions. Always read this information carefully and take
the necessary steps to protect personnel and property.
DANGER!
Is used to warn of immediate hazards that will cause severe personal injury or death.
WARNING!
Is used to call attention to a situation that could cause severe personal injury.
CAUTION!
Is used to call attention to a situation that could cause minor personal injury or damage to the machine or other property.
Read all instructions before using.
GENERAL SAFETY INSTRUCTIONS
Specic Cautions and Warnings are included to warn you of potential danger of machine damage or bodily harm.
This machine is intended for commercial use, for example in hotels, schools, factories, shops, ofces and rental
businesses.
WARNING!
• This machine shall be used only by properly trained and authorized persons.
•This machine is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning
use of the machine by a person responsible for their safety.
•Children should be supervised to ensure that they do not play with the appliance.
•Close attention is necessary when used near children.
•While on ramps or inclines, avoid sudden stops. Avoid abrupt sharp turns. Use low speed down ramps.
• Keep sparks, ame and smoking materials away from batteries. Explosive gases are vented during normal operation.
• Charging the batteries produces highly explosive hydrogen gas. Charge batteries only in well-ventilated areas, away
from open ame. Do not smoke while charging the batteries.
•Remove all jewelry when working near electrical components.
•Turn the power switch off, remove the magnetic key and disconnect the batteries before servicing electrical
components.
•Never work under a machine without safety blocks or stands to support the machine.
• Do not dispense ammable cleaning agents, operate the machine on or near these agents, or operate in areas where
ammable liquids exist.
•Do not pressure wash operator control panel, circuit breaker panel or batteries.
• Only use the brushes provided with the appliance or those specied in the instruction manual. The use of other
brushes may impair safety.
•Observe the Gross Vehicle Weight, GVW, of the machine when loading, driving, lifting or supporting the machine.
•Do not leave the machine unattended without being sure that it cannot move independently.

A - 6 Nilsk SC4000 - 56091273 9/2022
INSTRUCTIONS FOR USEA - ENGLISH
CAUTIONS AND WARNINGS - CONTINUED
CAUTION!
•This machine is not approved for use on public paths or roads.
• This machine is not suitable for picking up hazardous dust.
•When operating this machine, ensure that third parties, particularly children, are not endangered.
•Before performing any service function, carefully read all instructions pertaining to that service task.
• Do not leave the machine unattended without rst turning the power switch off and removing the magnetic key.
•Turn the power switch off and remove the magnetic key, before changing the brushes, and before opening any access
panels.
•Take precautions to prevent hair, jewelry, or loose clothing from becoming caught in moving parts.
• Use caution when moving this machine in below freezing temperature conditions. Any water in the solution, recovery
or detergent tanks or in the hose lines could freeze, causing damage to valves and ttings. Flush with windshield
washer uid.
•The batteries must be removed from the machine before the machine is scrapped. The disposal of the batteries
should be safely done in accordance with your local environmental regulations.
• CAUTION - This machine is for indoor use only.
• CAUTION - This machine shall be stored indoors only.
• Do not use on surfaces having a gradient exceeding that marked on the machine.
•All doors and covers are to be positioned as indicated in the instruction manual before using the machine.
•Only use locations designated as “Tie Down Locations” to secure the machine during transport. Using any other
location of the machine to tie down the machine may cause damage or injury.
•Do not operate the machine on a grade outside that which is written on the nameplate.
• Do not carry passengers on any part of the machine.
• In order to prevent unauthorized use of the machine, the power source shall be switched off or locked, and key
removed.
•Machines left unattended shall be secured against unintentional movement.
SAVE THESE INSTRUCTIONS

9/2022 A - 7 56091273 - Nilsk SC4000
ENGLISH - AINSTRUCTIONS FOR USE
REGULATORY
The SC4000 equipped with TC-1 IoT module contains radio equipment operating in the frequency bands and with max TX power as
indicated below:
Frequency range [MHz] Max TX pwr [dBm]
880-915
1710-1785
33
30
1920-1980
1710-1785
2500-2570
880-915
832-862
703-748
23
2400-2483,5 20

A - 8 Nilsk SC4000 - 56091273 9/2022
INSTRUCTIONS FOR USEA - ENGLISH
KNOW YOUR MACHINE
As you read this manual, you will occasionally run across a bold number or letter in parentheses - example: (2). These numbers refer to an item
shown on these pages unless otherwise noted. Refer back to these pages whenever necessary to pinpoint the location of an item mentioned in the
text.
1 Recovery Tank Cover
2 Operator’s Seat
3 Drive Pedal
4 Drive Wheel
5 Rear Wheel
6 Battery Compartment (under seat)
7 Warning Beacon (optional)
8 Detergent Cartridge (with EcoFlex™)
9 Storage Box
10 Circuit Breakers
10a Drive Controller 70 Amp (CB2)
10b Control Board 5 Amp (CB1)
10c Control Board 5 Amp (CB3)
11 Headlights (optional)
12 Blue Light (optional)
13 Solution Tank Drain Hose (optional)
14 Front Roller Bumper
15 Scrub Deck
16 Side Blade Assembly Removal Knobs
17 Solution Tank Fill
18 Onboard Battery Charger (optional)
19 Machine Battery Connector
20 Battery Compartment Latch
21 Tie-Down Location (1 front)
22 SmartKey™ Reader
39 Magnetic SmartKey™
1
2
34
5
6
8
89
10
12
13
15
14
10a 10c
10b
12
11
16
11
13
6
7
17
18
14
21
22
9
39
19
20

9/2022 A - 9 56091273 - Nilsk SC4000
ENGLISH - AINSTRUCTIONS FOR USE
KNOW YOUR MACHINE
21 Tie Down Location (2 rear)
23 Control Panel
24 Recovery Tank Cover
25 Recovery Tank Shutoff Float
26 Vacuum Motor Filter Housing
27 Debris Catch Tray
28 Recovery Tank Drain Hose
29 Recovery Hose
30 Squeegee Tilt Adjust Knob
31 Squeegee Mount Thumb Nuts
32 Squeegee Caster Lock Knob
33 Squeegee Assembly
34 Hopper (Cylindrical only)
35 Scrub Deck
36 Solution Filter
37 Solution Shutoff Valve
38 Solution Solenoid Valve (on scrub deck)
23
25
28
31
32
33
21
34
35
37
36
29
30
24
26
27
38

A - 10 Nilsk SC4000 - 56091273 9/2022
INSTRUCTIONS FOR USEA - ENGLISH
CONTROL PANEL
A Emergency Stop
B Information Switch & Navigation Switches
C Display (see Control Panel-Continued)
D Reverse Paddle
E Horn Paddle
F Solution Switch
F+ Solution Flow Increase Switch
F- Solution Flow Decrease Switch
G Vacuum Switch
H Power Switch
J Detergent Switch
K Brush Install Switch (optional functionality)
L Speed Limiter Switch
M One-Touch™ Scrub ON/OFF Switch
M+ Scrub Pressure Increase Switch
M- Scrub Pressure Decrease Switch
N EcoFlex Paddle
O Timed Solution Off Paddle
F+
CB
O
N
M
M-
LKJH
M+
F
G
A
D
E
F-

9/2022 A - 11 56091273 - Nilsk SC4000
ENGLISH - AINSTRUCTIONS FOR USE
CONTROL PANEL - CONTINUED
C1 Hour Meter (Drive Hours)
C2 Active Fault Codes
C3 Battery Indicator
C4 Solution Tank Level Indicator
C5 Speed (MPH or KPH)
C6 Detergent Indicator (with EcoFlex)
C7 Detergent Percentage Indicator
C8 Detergent Indicator Bar Graph
FIRST = Minimum Concentration Detergent Mode
SECOND = Maximum Concentration Detergent Mode
NONE = Off
C9 Solution Flow Indicator
C10 Solution Flow Rate Bar Graph
FIRST = Low
SECOND = Medium
THIRD = High
FOURTH = Extreme
NONE = Off
C11 Scrub Pressure Indicator
C12 Scrub Brush Pressure Bar Graph
FIRST = Regular
SECOND = Heavy
THIRD = Extreme
NONE = Off
C14 Battery Low Voltage Indicator
C15 EcoFlex Indicator (with EcoFlex)
C16 Vacuum Indicator
C17 Wand Indicator
C18 Brush Install Indicator
C19 Purge Indicator (with EcoFlex)
C20 Emergency Stop Activated Indicator
C21 No Key Indicator
C22 Key Read Error Indicator (see Troubleshooting)
C23 Restricted User Key Indicator (see Troubleshooting)
C24 Critical Fault Indicator
C25 Fault Code (Critical)
C26 Impact Lockout Indicator (see page 13)
C27 Reverse Indicator
C26
C1
C2
C3
C4
C5
C8C7
C6
C10
C12
C11
C9
C25
C14 C15 C21
C22
C23
C16 C17 C18 C19 C20
C24
C27

A - 12 Nilsk SC4000 - 56091273 9/2022
INSTRUCTIONS FOR USEA - ENGLISH
INFORMATION MENU DISPLAY
Menu Display
Pressing the Information Switch (B) will bring up the menu shown
below which allows the operator to change machine settings and
gather machine information. Use the four Navigation Arrows (B1)
(up, down, left & right) to move through the menu and the information
switch to exit the menu.
B
Menu
Hours
Faults
Keys
Options
i Exit Select B1
B1
Menu visible with either blue (User) or yellow (Supervisor) SmartKey.
Menu Level Notes
1 2
Hours Displays various system hours
On Time Displays Power ON hours
Drive Time Displays drive(non-neutral) hours
Scrub Time Displays scrub/brush ON hours
Recovery Time Displays recovery/vacuum ON hours
Faults**
Active Faults Displays list of active faults w/timestamp and description
Fault History Displays list of fault history w/timestamp and description
Keys
Read Key Read the key serial number, family and type for key inserted into holder
- if user key, allows supervisor to add to key list
Key List Display the current approved user key list
supervisor can also remove selected key from list
**See Fault Code Display
Menu visible only with yellow (Supervisor) SmartKey.
Menu Level Notes
1 2 3
Options User selectable options
Language
English*
Italiano
Deutsch
Portuguese
Français
Español
Menu display language
Floor
Standard*
Smooth
Polisher**
Floor type
**polisher only available for 34D machines
Scrub Startup
Light
Heavy
Extreme
Last Used*
Scrub level at start
Scrub Max
Light
Heavy
Extreme*
Maximum scrub level allowed
*Default setting

9/2022 A - 13 56091273 - Nilsk SC4000
ENGLISH - AINSTRUCTIONS FOR USE
INFORMATION MENU DISPLAY - CONTINUED
Options Menu visible only with yellow (Supervisor) SmartKey.
System Menu visible with either blue (User) or yellow (Supervisor) SmartKey
Menu Level Notes
1 2 3
Options User selectable options
Solution
Proportional*
Fixed
UK
Solution mode; Proportional – solution ow
increases with speed of machine. Fixed – Solution
ow stays the same despite machine speed. UK
(United Kingdom) – solution ow is reduced to
conserve water.
Solution In Rev No*
Yes Leave solution on in reverse?
Lock Detergent No*
Yes Lockout detergent percentage adjustment for user?
Beacon On*
Off Beacon light on/off
Burst Of Power (s)
min = 60*
max = 300
step = 60
Burst-of-power (BOP) time span (seconds) EcoFlex
Fwd Speed Max (%)
min = 50
max = 100*
step = 10
Maximum forward speed as percentage of maximum
available speed
Lock Speed Limit No*
Yes Lockout scrub speed limit for user?
Inactivity Time (min)
min = 1
max = 30
step = 1
default = 15
Inactivity time before putting machine in sleep mode
(minutes)
Impact Detect
Off*
Log
Lockout
Impact detection status
Log – Impact is recorded
Lockout – Impact is recorded and User is locked
out of scrub functions (Display shows (C26)) until
machine is reset with a Supervisor key.
Impact Level High*
Low
Impact detection sensitivity level. If nuisance
tripping occurs (i.e. driving over a oor transition),
adjust setting to low.
System
MMC Firmware Main controller (mmc) rmware revision
UI Firmware User interface panel (ui) rmware revision
CSP190-Comm F/W Drive controller comm rmware revision
CSP190-Motor F/W Drive controller main/motor control rmware revision
MMC S/N Main controller (mmc) pcb serial number
UI S/N User interface panel (ui) pcb serial number
Impact Log
Display list of impact events with max value,
timestamp and user id (only if enabled)
- single item view will show max values for each axis
(x,y,z)
*Default setting
SERVICE NOTE: Additional menus (Service and Conguration) are accessible only through service/technician mode. The service menu
allows observing operational and user parameters. The conguration menu allows adjusting machine settings. See Service Manual
for more details.

A - 14 Nilsk SC4000 - 56091273 9/2022
INSTRUCTIONS FOR USEA - ENGLISH
MAGNETIC SmartKey™
The use of a Magnetic SmartKey (39) is required to operate this machine. Pressing the power switch without a key in place on the SmartKey
Reader (22) will cause the machine to momentarily turn on and display No Key Indicator (C21) before turning off.
There are two different Magnetic SmartKeys (39).
1. The “User” (blue) key allows a basic level of access to the information menu (press Information Switch (B)).
2. The “Supervisor” (yellow) key allows an additional level of access to see Options Menu.
FIGURE 1-1
PREPARE THE MACHINE FOR USE
LEAD-ACID BATTERIES
If your machine shipped with batteries installed do the following:
• Check that the batteries are connected to the machine.
• Turn ON the Power Switch (H) and check the Battery Indicator (C3). If the gauge is completely lled the batteries are ready for use. If the
gauge is less than full the batteries should be charged before use. See “Charging The Batteries” section.
• IMPORTANT!: IF YOUR MACHINE HAS AN ONBOARD BATTERY CHARGER REFER TO THE OEM PRODUCT MANUAL FOR
INSTRUCTIONS REGARDING SETTING THE CHARGER FOR BATTERY TYPE.
If your machine shipped without batteries installed do the following:
• Consult your Authorized Nilsk dealer for recommended batteries.
• Install the batteries by following the instructions below.
• IMPORTANT!: IF YOUR MACHINE HAS AN ONBOARD BATTERY CHARGER REFER TO THE OEM PRODUCT MANUAL FOR
INSTRUCTIONS REGARDING SETTING THE CHARGER FOR BATTERY TYPE.
LEAD-ACID BATTERY INSTALLATION
WARNING!
Use extreme caution when working with batteries. Sulfuric acid in batteries can cause severe injury if allowed to contact
the skin or eyes. Explosive hydrogen gas is vented from the batteries through openings in the battery caps. This gas
can be ignited by any electrical arc, spark or ame. Do not install any lead-acid battery in a sealed container or enclosure.
Hydrogen gas from overcharging must be allowed to escape.
When Servicing Batteries...
•Remove all jewelry
•Do not smoke
•Wear safety glasses, rubber gloves and a rubber apron
•Work in a well-ventilated area
•Do not allow tools to touch more than one battery terminal at a time
• ALWAYS disconnect the negative (ground) cable rst when replacing batteries to prevent sparks.
•ALWAYS connect the negative cable last when installing batteries.
22
39

9/2022 A - 15 56091273 - Nilsk SC4000
ENGLISH - AINSTRUCTIONS FOR USE
LEAD-ACID BATTERIES - CONTINUED
CAUTION!
Electrical components in this machine can be severely damaged if the batteries are not installed and connected properly.
Batteries should be installed by Nilsk or by a qualied electrician.
1 Remove the batteries from their shipping crate and carefully inspect them for cracks or other damage. If damage is evident, contact the
carrier that delivered them or the battery manufacturer to le a damage claim.
2 Turn the Power Switch (H) OFF and remove the Magnetic SmartKey (39).
3 Rotate the Battery Compartment Latch (20) to unlock then tip the seat forward (the gas spring holds the seat open).
4 For additional access the recovery tank can be removed from the machine. NOTE: Disconnect the recovery hose, vacuum motor wiring and
warning beacon wiring then lift the tank straight up and off the machine, using two people or an overhead hoist.
5 Your machine comes from the factory with enough battery cables to install three 12 volt batteries. Using at least (2) people and an
appropriate lifting strap, carefully lift the batteries into the battery compartment and arrange them exactly as shown in FIGURE 2-1. Secure
the batteries as close to the rear and right side of the machine as possible. Use battery spacer to keep batteries from moving. If installing a
mono-block battery use an overhead hoist.
6 Install the battery cables as shown. Position the cables so the battery caps can be easily removed for battery service.
IMPORTANT!: The protective caps supplied with the batteries need to be left on or re-used to completely cover the portion of the
battery terminals that are not being protected by the battery cable terminal cover boots supplied with the battery cables. This also
applies to the in-line fuse holder boot.
7 Carefully tighten the nut in each battery terminal until the terminal will not turn. Do not over-tighten the terminals, or they will be very difcult
to remove for future service.
8 Coat the terminals with spray-on battery terminal coating (available at most auto parts stores).
9 Put one of the black rubber boots over each of the terminals and connect the Machine Battery Connector (19).
10 Make sure the fuse holder boot is covering the fuse holder, the cable end of the Machine Battery Connector (19), and as much of the battery
terminal as possible. Leave the protective caps supplied with the batteries in place or re-use to cover the terminal areas not protected by the
terminal cover boots.
When changing batteries or the charger, please contact your local authorized service center for correct battery, charger and machine
settings to prevent battery damage.
FIGURE 2-1
-NOTES-
6ADHESIVE LINER TO BE BACKSPLIT VERTICALLY
5ALL DIMENSIONS ARE CONTROLLED BY PRODUCTION ARTWORK
4NON PRINTING MAGENTA INDICATES CUT OUT
3
COLOR: 56E00158-56975034 (BLACK)
2
COLOR: 56E00158-56975004 (WHITE)
1) MATERIAL: 56E05002-03 OR ORACAL 1640.
5 FULL SCALE PRODUCTION ARTWORK
2 3
6
6.5 ±0.03
3.50 ±0.03
4 X R 0.25 ±0.03
4
B
REV
DWG NO
TITLE
C
SHEETS: 1 OF 1
SCALE: 1.000
FUO:
NOTES UNLESS
OTHERWISE SPECIFIED
1. ALL DIMENSIONS IN INCH, [ ] IN MM.
2. DO NOT SCALE DRAWING.
3. ALL DIMENSIONS APPLY AFTER
PLATING AND HEAT TREATING, BUT
BEFORE PAINTING.
4. REMOVE ALL BURRS AND
SHARP EDGES.
5. SEE 56E00713 FOR TORQUE INFO.
6. APPEARANCE AND FINSH SHALL
COMPLY WITH NILFISK OPERATIONAL
PROCEEDURE 1-720050.
7. WELD SYMBOLS PER AWS A2.4.
DRAWING STATUS: RELEASED
ASSY:
SIZE
CC: NO
NILFISK INC.
BROOKLYN PARK, MN 55445
Compliance with: NACS 2020
PRJ ENG
18-OCT-2021DRAWN
CANVAS
MATERIAL: SEE NOTES
FINISH: SEE NOTES
56120182 B
56120E12-1
SC4000
MLB
DECAL-BATTERY
3D Model: MODEL NAME Drawing: SAMPLE-DECAL
SHEET
DWG NO REVISIONS
APPDDFTMDATEECOREV
1
CPGMLB18-OCT-2021A-15247
ARELEASE
56120182
F
F
12
3
4
5
6
CONFIDENTIAL
THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK INC.,
BROOKLYN PARK, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO-
DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT
AGREES TO RETURN IT UPON REQUEST.
A
B
C
D
E
B
C
D
E
12
3
4
5
6
CPG
CPGMLB15-NOV-2021A-15452
BUPDATE: ARTWORK

A - 16 Nilsk SC4000 - 56091273 9/2022
INSTRUCTIONS FOR USEA - ENGLISH
INSTALL THE BRUSHES (DISC SYSTEM)
CAUTION!
Turn the machine OFF at the power switch, before changing the brushes, and before opening any access panels.
1 Make sure the Scrub Deck is in the RAISED position. Make sure the Power Switch (H) is off.
2 See Figure 2-2. Remove both Side Blade Assemblies (AA). NOTE: The blade assemblies are held in place by two large Knobs (BB).
Loosen these knobs and slide the Blade Assemblies (AA) forward slightly and then off of the Scrub Deck.
3a To manually install the brushes:
Lift the Brushes (DD) (or pad holders) and align the lugs on the brush with the holes on the mounting plate then turn to lock in place (turn the
outside edge of brush towards the front of machine as shown by arrow (EE)).
3b To use the automatic Brush Install feature (optional kit must be installed):
i. Press the Guide Bar (CC) forward while sliding the brush under the deck and stop when the brush is contacting both legs of the guide bar.
Repeat this step for the brush on the other side of the deck. NOTE: Do not push the rst brush out of position with the second brush.
ii. Turn the machine ON at the Power Switch (H). (SCRUB SYSTEM MUST BE OFF and MACHINE MOTIONLESS)
CAUTION!
Keep hands and feed out from underneath the deck. Take precautions to prevent hair, jewelry, or loose clothing from
becoming caught in moving parts.
iii. Press the Brush Install Switch (K) the display will show Brush Install Indicator (C18) then wait for the brush install sequence to nish.
4 Reinstall the side blade assemblies. NOTE: While scrubbing the brushes rotate as shown by arrows (FF).
FIGURE 2-2
CC
CC
EE
EE
FF
FF
AA
BB
BB
DD
K
C18

9/2022 A - 17 56091273 - Nilsk SC4000
ENGLISH - AINSTRUCTIONS FOR USE
INSTALL THE BRUSHES (CYLINDRICAL SYSTEM)
CAUTION!
Turn the machine OFF at the power switch, before changing the brushes, and before opening any access panels.
1 Make sure the Scrub Deck is in the RAISED position. Make sure the Power Switch (H) is off.
2a Fixed Side Skirts: See Figure 2-3a. Remove both side blade assemblies. NOTE: The side blade assemblies are held in place by two large
Knobs (BA). Loosen these knobs and then slide the Blade Assemblies (BB) forward and off of the Scrub Deck.
2b Adjustable Side Skirts: See Figure 2-3b. Unlatch and swing open both Side Blade Assemblies (AA).
3 Unhook the Latch (AB) on top of the Idler Assemblies (AC) and remove.
4 Slide the brush into the housing, lift slightly, push and turn until the tabs on the drive hub seat into the notches in the brush. NOTE: The idler
is designed with a snug t into the brush to reduce vibration. Re-install the Idler Assemblies (AC) make sure the tabs on the idler are inside of
the weldment (as shown in inset of Figure 2-3). Secure with Latch (AB).
5 Reinstall Blade Assemblies (BB) or close and latch both the Blade Assemblies (AA).
FIGURE 2-3
AA
AB
AC
AC
AC
2-3a 2-3b
BA
BB
AB

A - 18 Nilsk SC4000 - 56091273 9/2022
INSTRUCTIONS FOR USEA - ENGLISH
FILLING THE SOLUTION TANK
See Figure 2-4. Fill the solution tank with a maximum of 33 gallons (125 Liters) of cleaning solution. The solution tank can be lled to the bottom
of the Solution Fill (17). The solution should be a mixture of water and the proper cleaning detergent for the job. Always follow the dilution
instructions on the detergent container label. NOTE: EcoFlex machines can either be used conventionally with detergent mixed in the tank or the
detergent dispensing system can be used. When using the detergent dispensing do not mix detergent in the tank, plain water should be used.
CAUTION!
Use only low-foaming, non-ammable liquid detergents intended for machine application. Water temperature should not
exceed 130 degrees Fahrenheit (54.4 degrees Celsius)
FIGURE 2-4
3"
(7.5cm)
17
C4 C26
SOLUTION TANK INDICATOR
See Figure 2-5. The solution tank has three level sensors that correspond with three measurement points. The Solution Level Indicator (C4)
displays the level (1-3) of the solution in the tank. Once the tank is empty the Solution Empty Indicator (C26) will ash on the display.
FIGURE 2-5

9/2022 A - 19 56091273 - Nilsk SC4000
ENGLISH - AINSTRUCTIONS FOR USE
SQUEEGEE INSTALLATION
1 See Figure 2-6. Ensure the Squeegee Seal (AA) is free from debris and installed on the Squeegee Assembly (33). Lift the squeegee
assembly and slide it onto the Squeegee Mount (AB) and tighten the Squeegee Mount Thumb Nuts (31).
2 Connect the Recovery Hose (29) to the squeegee mount (AB).
3 Lower the squeegee and move the machine ahead slightly. Check that the rear squeegee blade touches the oor evenly across its entire
width and is bent over slightly as shown in the squeegee cross section (AC). If necessary adjust the rear squeegee to the proper height and
tilt by following the steps in the “Squeegee Adjustment”section.
FIGURE 2-6
AA
AB
31
29
31
33
AC

A - 20 Nilsk SC4000 - 56091273 9/2022
INSTRUCTIONS FOR USEA - ENGLISH
DETERGENT SYSTEM PREPARATION (WITH ECOFLEX)
FILL THE DETERGENT CARTRIDGE
CAUTION!
Always follow the instructions on the labels of the detergent cartridge when using oor cleaning detergents. Wear the appropriate
personal protective equipment such as gloves and eye protection when handling oor cleaning detergents.
In the event of a detergent spill follow these four steps:
• Communicate the hazard. Immediately notify others working in the area and any supervisory personnel of the hazard, and if the
situation warrants it, evacuate the area.
• Control the spill. Ensure the spill does not become any worse.
• Contain the hazard.
• Clean up the spill and any damage safely.
The Detergent Cartridge (8) is located beneath the seat. Fill the detergent cartridge with a maximum of 1.25 gallon (4.73 Liters) of detergent.
SERVICE NOTE: Remove the detergent cartridge from the machine prior to lling to avoid spilling detergent on the machine.
It is recommended that a separate cartridge be used for each detergent you plan to use. The detergent cartridges have a white decal on them so
you can write the detergent name on each cartridge for clarication. When installing a new cartridge, remove the Factory Cap (AA) and place the
cartridge in the machine. Install the Dry Break Cap (BB) and detergent hose as shown in Figure 2-7.
The system should be purged of previous detergent when switching to a different detergent (see “To Purge When Changing Detergent”).
FIGURE 2-7
BB
AA
8