Nilfisk-Advance SC3500 User manual

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04/2019 REV B
Form No. VR38003
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USER MANUAL
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1
TABLE OF CONTENTS
ITRODUCTION ..................................................................................................................................... 2
MANUAL CONTENT AND PURPOSE ........................................................................................................................ 2
HOW TO KEEP THIS MANUAL .................................................................................................................................. 2
DECLARATION OF CONFORMITY............................................................................................................................ 2
ACCESSORIES AND MAINTENANCE ....................................................................................................................... 2
CHANGES AND IMPROVEMENTS ............................................................................................................................ 2
SCOPE OF APPLICATION ............................................................................................................................................ 2
MACHINE IDENTIFICATION DATA........................................................................................................................... 2
TRANSPORT AND UNPACKING ................................................................................................................................ 3
SAFETY .................................................................................................................................................. 3
VISIBLE SYMBOLS ON THE MACHINE ................................................................................................................... 3
SYMBOLS THAT APPEAR ON THE INSTRUCTION FOR USE MANUAL ............................................................ 3
GENERAL SAFETY INSTRUCTION ........................................................................................................................... 4
MACHINE DESCRIPTION ................................................................................................................. 6
MACHINE STRUCTURE .............................................................................................................................................. 6
CONTROL PANEL ......................................................................................................................................................... 7
INFORMATION DISPLAY BY LCD SCREEN (29) ..................................................................................................... 7
DISPLAY WINDOW OF CHARGER INDICATON LIGHT ......................................................................................... 7
TECHNICAL PARAMETERS ....................................................................................................................................... 8
CIRCUIT DIAGRAM ..................................................................................................................................................... 9
OPERATING GUIDE .......................................................................................................................... 10
BATTERY CHECK/SETTING ON A NEW MACHINE ............................................................................................. 10
BATTERY INSTALLATION AND BATTERY TYPE SETTING (WET OR GEL OR AGM OR DIS-EV) ............... 11
BATTERY MODE SET UP METHOD OF THE CHARGER ...................................................................................... 12
EMERGENCY BRAKING ........................................................................................................................................... 12
BRUSH/PAD INSTALLATION AND UNINSTALLATION ....................................................................................... 12
SQUEEGEE INSTALLATION AND ADJUSTMENT ................................................................................................. 13
SOLUTION TANK FILLING ....................................................................................................................................... 13
DETERGENT TANK FILLING (FOR MACHINES WITH CHEMICAL MIXING SYSTEM) ................................. 13
DRIVE MOTOR INSPECTION ................................................................................................................................... 14
MACHINE START AND STOP ................................................................................................................................... 14
MACHINE OPERATION (SCRUBBING AND DRYING) ......................................................................................... 15
DETERGENT AMOUNT ADJUSTMENT .................................................................................................................. 16
BATTERY POWER DISPLAY ..................................................................................................................................... 16
RECOVERY TANK EMPTYING ................................................................................................................................ 17
AFTER USING THE MACHINE ................................................................................................................................. 17
MACHINE LONG INACTIVITY ................................................................................................................................ 17
USING FOR THE FIRST TIME ................................................................................................................................... 17
MAINTENANCE ................................................................................................................................. 18
SCHEDULED MAINTENANCE TABLE.................................................................................................................... 18
BATTERY CHARGING ............................................................................................................................................... 19
BRUSH/PAD CLEANING ........................................................................................................................................... 20
SOLUTION FILTER CLEANING ............................................................................................................................... 20
SQUEEGEE CLEANING ............................................................................................................................................. 21
SQUEEGEE BLADE CHECK AND REPLACEMENT .............................................................................................. 22
TANK AND DEBRIS COLLECTION BOX CLEANING, AND COVER GASKET CHECK ................................... 23
DETERGENT TANK CLEANING .............................................................................................................................. 23
MACHINE WORKING HOUR CHECK ..................................................................................................................... 24
OVER LOAD PROTECTOR POSITION AND FUNCTION ...................................................................................... 24
ACCESSORIES/OPTIONS .......................................................................................................................................... 25
TROUBLE SHOOTING ...................................................................................................................... 25
SCRAPPING ......................................................................................................................................... 26

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ITRODUCTION
NOTE
The numbers in brackets refer to the
components shown in Machine Description chapter.
MANUAL CONTENT AND PURPOSE
The purpose of this Instruction for Use Manual is to provide the operator with necessary information to use the
machine properly and safely. It contains information about technical data, safety, operation, storage, maintenance,
spare parts and how to scrap it.
Before performing any procedure on the machine, no matter the operators and qualified technicians must read this
Manual carefully. Contact our company’s service center for any query about this manual or for any further
information is needed.
The operators must not perform procedures that should be done by qualified technicians. Our company will not be
answerable for damages coming from the non-observance of this prohibition.
HOW TO KEEP THIS MANUAL
The Manual must be kept near the machine, inside an adequate case, away from liquids and other substances that can
cause any damage to it.
DECLARATION OF CONFORMITY
Declaration of Conformity is supplied with the machine and certifies machine conformity with the law in force.
NOTE
The copies of the original declaration of conformity are provided together with the machine
documentation.
ACCESSORIES AND MAINTENANCE
All the necessary operation, maintenance and repair procedures must be performed by qualified personnel, or by our
company appointed service center. ONLY authorized spare parts and accessories should be used.
Contact our company customer service for any service or purchase of accessories or spare parts if necessary.
CHANGES AND IMPROVEMENTS
We committed to continuous improvement of the products, the company reserves the right to the machine changes
and improvements without informing in additional.
SCOPE OF APPLICATION
The scrubber applies to commercial and industrial use. It is suitable for cleaning smooth and solid floors, operating
by a qualified personnel in safety circumstance. It is not suitable for outdoor use, carpet or rough floor cleaning.
MACHINE IDENTIFICATION DATA
The machine serial number and model name are marked on the serial label.
This information is useful. Use the following table to write down the machine identification data when requiring
spare parts for the machine.
MACHINE MODEL.............................................................................
MACHINE SERIAL NUMBER...........................................................

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TRANSPORT AND UNPACKING
When the carrier delivers the machine, make sure the packaging and machine are both whole and undamaged. If any
damaged, make the carrier know the damage and before accepting the goods, reserve the right in compensation of the
damage.
Follow the instructions on packing strictly when unpacking the machine.
Check the package to ensure following items are included:
1. Technical documentations including Quick Start Guide manual, Instruction for Use Disk and on-board charger
manual if on-board charger is equipped.
2. Charger cable if on-board charger is equipped.
SAFETY
The following symbols indicate potentially dangerous situations. Always read this information carefully and take all
necessary precautions to safeguard people and property.
VISIBLE SYMBOLS ON THE MACHINE
WARNING
!
Read all the instructions carefully before performing any operation on the machine.
WARNING
!
Do not wash the machine with direct or pressurized water jets.
WARNING
!
Do not use the machine on slopes with a gradient exceeding that is defined in the
specification.
SYMBOLS THAT APPEAR ON THE INSTRUCTION FOR USE MANUAL
DANGER
!
It indicates a dangerous situation with risk of death for the operator.
WARNING
!
It indicates a potential risk of injury for people.
CAUTION!
It indicates a caution or a remark related to important or useful functions.
Pay attention
to the paragraphs marked by this symbol.
NOTE
It indicates a remark related to important or useful functions.
CONSULTATION
It indicates the necessity to refer to the Instruction for Use manual before performing any
procedure.

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GENERAL SAFETY INSTRUCTION
Specific warnings and cautions to inform about potential damages to people and machine are shown below.
DANGER
!
x This machine must be operated by trained and authorized personnel according to guidance of the
manual.
x Before performing any cleaning, maintenance, repair or replacement procedure, read all the
instructions carefully, ensure to turn the machine OFF and disconnect the battery connector.
x Do not operate the machine near toxic, dangerous, flammable and/or explosive powders, liquids or
vapour. This machine is not suitable for collecting dangerous powders.
x Do not wear jewels when working near electrical components.
x Do not work under the lifted machine without supporting it with safety stands.
x When using lead (WET) batteries, they may emit inflammable gas under normal use, must keep
sparks, flames, smoking materials and radiating, illuminating and burning items away from the
batteries.
x When charging lead (WET) batteries, they may emit hydrogen gas which may cause explosive. Must
ensure the charging environment is well ventilated and away from naked flames.
WARNING
!
x This machine is intended for COMMERCIAL USE, for example in hotels, schools, hospitals, factories,
shops, offices and rental businesses.
x Machines left unattended shall be secured against unintentional movement.
x In order to prevent unauthorized use of the machine, the power source shall be switched off or locked,
for example by removing the key of the main switch or the ignition key.
x Check the machine carefully before each use. Ensure that all the components have been well
assembled before use. Or it may causes damages to people and properties.
x Before using the battery charger, ensure that the values of frequency and voltage indicated on the
machine serial number label match those of mains.
x Never move the machine by pulling the battery charger cable. Do not let the cable through a closed
door, or winding on sharp edges or corners. Do not run the machine on the battery charger cable.
Keep the battery charger cable away from heated surfaces.
Do not charge the batteries if the battery charger cable or the plug are damaged.
x To reduce the risk of fire, electric shock, or injury, make sure machine is off before leaving.
x Use or store the machine indoors in dry conditions, it is not allowed for outdoor use.
x The machine both storage and working temperature must be between 0 °C and +40 °C, the humidity
of air must be between 30% - 95%.
x Do not use the machine on slopes with a gradient exceeding as specification show.
x When using and handling floor cleaning detergents, follow the instructions on the labels of the
detergent bottles and wear suitable gloves and protections.
x Use brushes and pads supplied with the machine or defined in the manual. Using other brushes or
pads could reduce safety.
x In case of machine malfunctions, ensure that these are not due to lack of maintenance. If necessary,
request assistance from the authorized personnel or from an authorized Service Center.
x Take all necessary precautions to prevent hair, jewels and loose clothes from being caught by the
machine moving parts.
x Do not use the machine in particularly dusty areas.
Do not wash the machine with direct or pressured water jets, or with corrosive substances.

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x Do not bump into shelves or scaffoldings, especially where there is a risk of falling objects.
x Do not lean liquid containers on the machine, use the relevant can holder.
x To avoid damaging the floor, do not allow the brush/pad to operate while the machine is stationary.
x In case of fire, use a dry powder fire extinguisher. Do not use liquid fire extinguishers.
x Do not remove or modify the machine stickers.
x Do not tamper with the machine safety guards and follow the ordinary maintenance instructions
scrupulously.
x Pay attention during machine transportation when temperature is below freezing point. The water in
the recovery tank and in the hoses could freeze and cause seriously damage to the machine.
x If spare parts need be replaced, order ORIGINAL spare parts from an Authorized Dealers or
Retailers.
x Return the machine to the Service Center if it doesn’t work as usual or it is in condition such as
damaged, placed outdoors, dropped into water.
x To ensure machine proper and safe operation, the scheduled maintenance shown in the relevant
chapter of this Manual, must be performed by the authorized personnel or an authorized Service
Center.
x The machine must be properly disposed of, because the presence of toxic-harmful materials (batteries,
etc.), which are subject to standards that require disposal in special centers (see Scrapping chapter).
x This machine as a cleaning tool only, not for any other purpose use.
x Always keep the openings free from dust, hairs and any other foreign material which could reduce the
air flow. Do not use the machine if the openings are clogged.
x Use the machine only where a proper lighting is provided.
x This machine is not intended for use by persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge.
x Close attention is necessary when used near children.
x Children should be supervised to ensure that they do not play with the machine.
x While using this machine, take care not to cause damage to people or objects.

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MACHINE DESCRIPTION
MACHINE STRUCTURE (as shown in Figure 1)
1. Steering wheel
2
. Seat cushion
3
. Recovery tank cover
4
. Utility caddy (*)
5
. USB charging port
6
. Front lights
7
. Front wheel & Drive motor
8
. Brush
9
. Brush assembly
10
. Brush deck
11
. Rear wheel
12
. Squeegee assembly
13
. Solution outlet cover
14
. Mop frame (*)
15
. Recovery tank
16. Warning light (*)
17
. Recovery tank drain hose
18
. Tank
19
. Squeegee adjustment knob
20
. Vacuum hose
21
. Squeegee knob
22
. Squeegee hasp
23
. Control panel
24
. Key switch
25
. Emergency switch
26
. Accelerate pedal
27
. Solution level indicator
28
. Batteries (*)
29
. Battery tray for wet battery (*)
(*): Optional
29
12
10
9
6
5
32
1
11
8
7
4
15
14
13
16
28
27
24
23
22
21
20
19
18
17
26
25
Figure 1

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Figure 2
MACHINE DESCRIPTION
CONTROL PANEL (as shown in Figure 2)
30. LCD screen
31
. Speed controller light
32
. Detergent flow control knob (*)
33
. Solution volume adjusting button (- +)
34
. Horn button
35
. Forward-Backward switch
36
. Recovery tank full indicated light
37
. Front lights
38
. Brush pressure indicated light
39
. One-Start button
40
. Vacuum system switch
41
. Brush unload button
42
. Speed adjusting knob
43. Charger plug cover
44
. Vacuum motor overload protector
45
. Drive motor overload protector
46
. Brush lift overload protector
47
. Brush motor overload protector
48
. Main motor overload protector
49
. Brush motor overload protector
50
. Squeegee lift overload protector
51
. Charger plug
52
. Battery fully charged indicator (Green)
53
. Battery semi-charged indicator (Yellow)
54
. Battery charge indicator (Red)
(*): Optional
INFORMATION DISPLAY BY LCD SCREEN (29)
1. Running time. For example, “0001.5Hour” indicates that the machine has been used for 1.5hour.
2. “STOP” indicates there is nobody on the seat, the machine won’t move, brushes don’t work, only vacuum motor
is active for work.
3. Battery level. For example, “80%■■■■_” indicates that the battery capacity is 80% remaining. When the battery
capacity is 10%, only drive motor is active for work, other functions don’t work anymore. Must charge the bat-
teries before it works normally.
4. Battery type. The default setting of battery type is “GEL”. “WET” indicates that wet batteries are installed.
5. Error 1 display. “ERROR-01 Battery Vol Low” indicates the batter voltage is lower than 18V. All the functions
of the machine cannot be used, please charge the batteries.
6. Error 2 display. “ERROR-02 Brush Actuator Fault” indicates that brush actuator is current overload, please
check if there is something be stuck in the actuator. Turn off the power to remove the fault before using the ma-
chine.
DISPLAY WINDOW OF CHARGER INDICATON LIGHT (as shown in Figure 2)
1. At the charging beginning, red light indicator (53) stays on.
2. After charging for some time, the red LED (53) on charger turns off, the yellow LED (52) turns on, this is the
second stage of charging.
3. When charging is completed, the yellow LED (52) turns off, the green LED (51) turns on to indicate that the
battery is fully charged.
31
45
47
32
36
42
43
46
48
33
41
40
39
53
51
49
52
34
37
38
44
54
50
30
35

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NOTE
In the process of charging, if the yellow light (52) is on, it may be caused by: Battery and
charger doesn’t match, battery is not
connected well, or output is short-circuited.
The red light of charger flashing may be caused by the charger internal short circuit.
MACHINE DESCRIPTION
TECHNICAL PARAMETERS
Rated power (W) 2658
Airflow (l/sec.) 19.46
Vacuum (kPa) 15.5
Voltage (V) 24
Sound pressure level at 1.5 m (dB(A) ISO 3744) 69
Max. speed (km/h) 6
Length x width x height (mm）1620x760x1250
Brush speed (RPM) 180
Solution/recovery tank (l) 110/110
Brush pressure (kg) 35/50
Scrubbing width (mm) 710
Min. turn-around aisle width (cm) 225
Max. climbing rate (%) 10
Productivity theoretical/actual (m²/h) 4260/2980
Insulation class III
Brush/pad diameter (mm) 355/355
IP protection class IP24
Net weight (kg) 230
Water flow (l/m) 1.2/3.5
Vacuum motor power (W) 500
Max. running time 4
Brush motor (W) 500
Battery compartment size (L x W x H) (mm) 590x390x350
Gross weight (gvw) (kg) 545
Brush quantity and type 2 Disc
Technical Specification Technical Specification Value

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CIRCUIT DIAGRAM
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
D D
C C B B
A A
BT1 24V
SW2 Key Switch
SW1
Emergency Stop
SW4
F2 Circuit Breaker 3A
SPK1
BUZZER
F1
Circuit Breaker 5A
SW7
KA1
+
-
Fe
SQ1 SENSOR
+
-
HALL
VO
Pedal
VR1
NC
AC
+
DC
-
CH1
Battery Charger
C1a
C6b C7b
C1b
C2
+24V IN
C3
K1
Moving Input Signal
B-
C9e
C9b
C9c
C9d
C9a
POT WIPER
J10-4
KSI
J10-5
C17a
C17b
BRAKE+
BRAKE-
J10-14 J10-6
C14b C14a
C14c
POT HIGH SPEED POT POT LOW
J10-3 J10-18 J10-13
REVERSE INHIBIT
J10-17 J10-12
+24V OUT
B- J1-5
J1-10
J1-6
Status LED STATUS
J10-9
C10b
C10a
MODE
J1-4
M
M4
Traction Motor
B+ B-
B+ B-
M1 M2
F7
Circuit Breaker 30A
B+ B-
RL1
EV1
Solution Valve
K2
Brush Contactor
B- B-
M
M7 Detergent Pump
C4a
B-
VR2
Detergent ADJ
+5V
B-
K3
Vacuum Contactor
B-
B+ B- B+ B-
M
M5
Brush Actuator
C12a C13a
Recovery Tank Input
Seat Input Signal
K4
Brush Release
C4b
B-
C12b C13b
C15a C15b
B+ B- B+ B-
C16a C16b
M
M6
Squeegee Actuator
C5a C5b
LED1 LED2
B-
+12V OUT
B-
+12V OUT
J4-1 J4-2
USB Charger EB3
J1-1 J1-3
J1-1 J1-7 J1-2 J1-8 J5-1 J5-2 J5-3 J2-5 J2-11
-+
J2-6 J2-12
+-
F3 Circuit Breaker 3A
J2-1 J2-7
+24V Brush Actuator +24V Squeege Actuator
J6-1 J6-2
+24V IN
B-
J2-2 J2-8 J2-4 J2-9 J2-3
F4
Circuit Breaker 30A
M
M2 Brush Left
M
M1 Brush Right
RL2
EB1 Main Controller
F5
Circuit Breaker 30A
M
M3 Va c u u m
RL4
Curits 1228 Controller EB2
RL3
F6
Circuit Breaker 30A C8a C8b
C6a C7a
B+
B+
B-
B-
Optional
RED BLK
BLKRED
RED RED
RD/BK RD/BK
RD/BK RD/BK
RD/BK RED
RED
RED RED RED RED
BN/BK
YE/BK PU/BK GRN
RED
RED BLK
BRN BLU
RED BLK
RD/WH
WHI
RED BLK
RED RED RED
WHI WHI WHI BLK BLK BLK
BLK BLK BLK
BRN BRN BRN
BRN BRN
BRN
BLK BLK
C10c
RED
RED
BRN
BLU
J10-8
YEL BLK BLK
C11
BLU
RED
GRN
GRN
BLU
YEL
BU/BK
RED RED
YEL
ORG
YEL
ORG
Optional
WHI WHI
WHI
BU/BK
GR/BK WHI
BU/BK
WHI
GR/BK
BRN OR/BK GRN
RED RED RED
RED
C18b
C18a
REDRED
BLKBLK REDBLK
BLK
BLK
BLK
BLK
BLK BLK
RED
RED
BLKBLU
REDGRY
BLK BLK PUR RED
BU/BK
HeadLight HeadLight
Comment
5V+
TO 1D2 TO 1D2
TO 1D3
TO 1B3
TO 1B3
TO 1B3
TO 1A7
TO 1B1
5V-
C19 C20
RED
RED-Red1
2 3 4 5 6 7 8 9
10
BLK-Black BRN-Brown WHI-White GRN-Green BLU-Blue YEL-Yellow PUR-Purple ORG-Orange GRY-Grey
11 12 13 14 15 16 17 18 19 20
RD/BK-Red and Black BN/BK-Brown and Black YE/BK-Yellow and Black PU/BK-Purple and Black BU/BK-Blue and Black GR/BK-Green and Black OR/BK-Orange and Black C1-C22 Wire To Wire Connectors
RED
WHI
C21
(Optional)
Without battery charger version, Will use 18AWG wire connecte C3&C2 connectors.
BLK
C22a C22b

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OPERATING GUIDE
WARNING!
On some points of the machine there are some adhesive plates indicating:
—
DANGER!
—
WARNING!
—
CAUTION!
— CONSULTATION
While reading this Manual, the operator must pay particular attention to the symbols shown on the plates. Do
not cover these plates for any reason and immediately replace them if damaged.
BATTERY CHECK/SETTING ON A NEW MACHINE
WARNING!
The electric components of the machine can be seriously damaged if the batteries are either
improperly installed or connected. The batteries must be installed by qualified personnel. Set
the battery charger (optional) and machine PCBA according to the battery type (WET or GEL
or AGM or
DIS-EV
). Check the batteries whether it is damaged before installation. Disconnect
the battery connector and the battery charger plug. Handle the batteries with great care.
NOTE
The machine requires two 12V batteries or four 6V batteries, connecting according to Figure3.
The machine can be operated in one of following battery modes:
A) (WET OR GEL OR AGM OR DIS-EV) batteries are already installed and ready to be used
1. Check the batteries and connect the battery connector to the machine.
2. Insert the ignition key (24) and turn it on. If the LED screen (29) shows battery level is 100% power remaining,
cleaning work can be started; if only 10% battery power remaining, charge the batteries first.
B) Without Batteries
1. If your machine isn’t equipped with batteries, buy appropriate batteries [See the Technical Data Paragraph]. For
battery choice and installation, turn to qualified battery Retailers.
2. When batteries are ready, set the machine and the battery charger according to the type of installed batteries,
then follow the procedures shown in the next paragraph.
Figure 3

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11
Figure 4
Figure 5
BATTERY INSTALLATION AND BATTERY TYPE SETTING (WET OR GEL OR AGM OR
DIS-EV)
Set the electronic circuit board of the machine and battery charger according to battery types (WET or GEL or AGM
or DIS-EV) following steps below:
1. Turn off the machine.
2. Press flow adjusting buttons “+” and “-“ (B, C Figure4).
Turn the ignition key (D, Figure4) to “I” tap position.
3. Release flow adjusting buttons. “Set Battery Type
BAT=AGM 0” will be showed on LCD screen (as Figure 4
A).
4. Then, you can setting the battery type through pressing
button “+” and “-“ (B, C Figure4).
a. AGM
b. WET
c. DIS-EV
d. GEL
5. Turn off the machine, the battery type setting will be saved.
The battery type can be showed at the bottom of LCD
screen when re-turn on the machine.
Note: The default setting of battery type is GEL.
NOTE
Setting the battery type according to your new batteries, or the batteries may be damaged. Make
sure the charger is adapted to the batteries. If any query, contact our service center or your
supplier.
Battery Installation
1. Open the recovery tank cover (3 figure 1) and check the
recovery tank (15 figure 1) is empty, otherwise, empty it
with drain hose (17 figure 1).
2. Close the recovery tank cover (3 figure 1).
3. Turn over the seat, press the lock catch (as figure5 B), then
turn over the recovery tank (15 figure 1) carefully.
4. The machine is supplied with cables suitable to install
4X6V batteries. Carefully put the batteries into the
compartment, then install them correctly.
5. Route and install the battery cable as shown in (Figure 3),
then carefully tighten the nut on each battery terminal.
Connect batteries to connector on machine.
6. Place the protection cap on each terminal, and then
connect the battery connector.
7. Get the recovery tank (3 figure 1) back, lock the lock catch.
8. Need to order battery tray, if customer use the wet battery.
NOTE
Ensure the hand protection device (as
Figure
5 A) for turning over recovery tank is in the
correct position to security the safety when turning over the recovery tank.
Charging the Batteries
9. Charging the batteries. [Refer to MAINTENANCE chapters]
C
D
B
A
Set Battery Type
BAT=AGM 0
A
B

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12
Figure 6
BATTERY MODE SET UP METHOD OF THE
CHARGER
Do not to set charger unless you have
professional
training
1. Turn off the machine and disassemble the control cover
(A as Figure 6) from the machine. Then pry open the
label on the charger cover (B as Figure 6). you will find
the 2 sets of dipswitches (SW1 and SW2) in the charger.
2. Only the set of dipswitch SW1 (the one on the left side)
has effect on charging curve selection accordingly to the
table below.
DP1
DP2
CHARGING CURVE
ON
OFF
IUIa-ACD for Lead-acid (Wet) batteries
OFF
OFF
IUIa-GEL for Gel batteries of Exide-Sonnenschein
OFF
ON
IUU0-GEL for HAZE Gel and AGM batteries of other manufacturers
ON
ON
IUIUa-AGM for Discover AGM batteries
EMERGENCY BRAKING
If there is any emergency during machine operating, press the
emergency switch (A, Figure 6), then all functions of machine will
stop, no display on control panel (B, Figure 6)
BRUSH/PAD INSTALLATION AND UNINSTALLATION
NOTE
Install suitable brush (A, Figure
8
) or Pad (B and
C, Figure
8
) according to the type of floor to be
cleaned.
CAUTION
Before installation or uninstallation of brush or
pad, make sure all the switches on machine are in
off position and lifting up the squeegee from the
floor. The operator must be equipped with suitable
personnel protection devices such as gloves to
reduce the risk of accidents. Proceed as following:
1. Turn off the machine and lift up the brushes (9 as figure 1) from
the floor.
2. Put the brush/pad holder on the floor under the brush hub and
align their center, then rotary the brush/pad holder in the
direction (D as Figure 8) show to install it manually.
3. Press One-Start button (38 as Figure 2) on control panel, lift the
brushes (9 as Figure 2) up from the floor, then press brush
release button (40 as Figure 2) to release brushes automatically.
Rotary in the opposite direction (D as Figure 7) can manually
disassemble the brush/pad holder.
Figure 7
B
A
A
D
C
B
Figure 8
B
DP1
SW 1
A
DP2
ON
OFF
ON
OFF

USER MANUAL
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13
CAUTION!
Rotate the speed adjusting knob (41 as Figure
2) to the minimum speed before depressing
accelerate pedal (26 as
Figure
1) to avoid the machine running too quickly when it is started.
Make sure the brush/pad is installed correctly before machine operating.
SQUEEGEE INSTALLATION AND ADJUSTMENT
1. Turn the ignition key (24 as Figure 1) to “I”, press One-Start button (38 as Figure 2), the squeegee (12 as Figure 1)
is lowered down to the floor automatically.
2. Unscrew two of adjusting knobs (21 as Figure 1) on the squeegee, then install the squeegee to the squeegee
bracket and tighten the adjusting knobs. After that, connect the vacuum hose (20 as Figure 1) to the squeegee to
complete the squeegee installation.
3. Adjust the squeegee by squeegee adjusting handle (A, Figure 9).
a) If there is gap between the ground and middle section of rear
squeegee blade (B), adjust the knob (A) in counterclockwise
direction (F) until all section of rear blade good touches with
the ground, the front blade touch the ground slightly.
b) If there is gap between the ground and both end section of
rear squeegee blade (C and D), adjust the knob (A) in
clockwise direction (E) until all section of rear squeegee blade
good touch with the ground, the front blade touch the ground
slightly.
SOLUTION TANK FILLING
NOTE
If the machine is equipped with Chemical
Mixing System
(optional) the
tank must
be filled with clean water,
otherwise the
tank can be filled with solution.
1. Turn over the seat (A, Figure 10).
2. (For machines without Chemical Mixing System)
Use the front filler neck (B Figure 10) and the rear
filler neck (C Figure 10) to fill the tank (D Figure 10)
with a solution suitable for the work to be performed.
Refill to the reference mark “F” of the level check
hose (C Figure 10). Always follow the dilution in-
structions on the label of the chemical product used
to prepare the solution. The solution temperature
must not exceed + 104°F (+40°C).
WARNING!
Use only low
-foam and non-
flammable
detergents, intended for automatic
scrubber applications.
3. (For machines with Chemical Mixing System) Fill the tank (D Figure 10) with clean water by using the filler
neck (B Figure 10) and the rear filler neck (C Figure 10). Refill to the reference mark “F” of the level check
hose (C Figure 10). The water temperature must not exceed + 104°F (+40°C).
DETERGENT TANK FILLING (FOR MACHINES WITH CHEMICAL MIXING SYSTEM)
1. Open the cover (G Figure 10) and check that the recovery tank (F Figure 10) is empty, otherwise empty it with
the drain hose (E Figure 10).
E
A
C
F
BD
G
F
E
D
C
B
A
H
I
Figure 10
Figure 9

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14
Figure 11
2. Carefully overturn the recovery tank (F, Figure 10).
3. Open the cap (I Figure 10).
4. Replace or fill the jug (H Figure 10) with any standard gallon container of detergent suitable for the work to be
per formed (highly concentrated detergents). Do not fill the detergent tank completely, leave a few centimeters
from the edge.
WARNING!
Use
only low-foam and non-
flammable detergents, intended for automatic scrubber applications.
NOTE
To install a new jug container, determine the cap size and if it is the smaller cap, remove the
reducing adapter from the hose cap (I Figure
10
). Insert the suction tube into the jug (H Figure
10). Pushdown firmly on the cap (I) and twist at the same time to put the cap back onto the jug
(H Figure
10
). In case of new system, system emptied for cleaning, etc., wait for the hoses to fill
up, before starting the Chemical Mixing System.
DRIVE MOTOR INSPECTION
1. Turn the key switch (G Figure 11) to “ON”
2. Depress the accelerate pedal (D Figure 11) slightly then loosen it to
check if the machine can be steered forward and stopped.
3. To ensure the security, confirm if the machine can be stopped im-
mediately by pressing the emergency button (F Figure11). Rotate
the emergency button to reset it.
CAUTION
Climbing capacity of the machine must not exceed 10%.
CAUTION
The brake of drive motor is unstuck when the motor
works normally, it locks when the motor stops working.
In some special cases, such as machine pack-
ing/unpacking, machine fault etc., need to move the ma-
chine without drive motor working, please insert A
screwdriver (Figure
11
A) drive motor brake (Figure 11
B) and motor (Figure
11
C) between the grooves (Figure
1
1
), the machine brake is released, the machine can be
moved, after completion, please take out the screwdriver,
otherwise will not be able to start the machine.
MACHINE START AND STOP
Starting the machine
1. Prepare the machine as shown in previous paragraph.
2. Sit on the seat (J, Figure 12), insert the key switch (B) and turn it to “I”. If the LCD (A, Figure 12) is 100%, the
batteries are fully charged for use. If the LCD (A, Figure 12) is 10%, batteries must be charged before operation.
[Refer to MENTAINENCE chapters for batteries charging]
3. Press One-Start button (D, Figure 12) to start the machine, the squeegee and brushes are released to the floor
automatically, vacuum motor begins to work.
NOTE
Make sure the squeegee assembly is lifted before the machine steer backward, or the Machine
will be stopped and LCD screen show “Error” information.
NOTE
Make sure to turn off brush button before brush assembly is lifted, and lift the brush assembly
before machine steers forward/backward.
C
B
A
C
B
A
D
G
F
E

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15
4. Depress the accelerate pedal (N Figure 12), operate the machine
forward or backward by steering wheel (L Figure 12) together with
forward-backward switch (I Figure 12), you can adjust speed by
speed adjusting knob (F Figure 12).
5. Adjust solution flow by solution adjusting button (G Figure 12)
base on cleaning requirement.
6. You can charge your phone or pad through USB charging port (K
Figure 12) when the key switch (A Figure 12) is turned to “ON”.
7. Press the horn button (H Figure 12) to warn people when necessary.
8. If necessary, press the emergency button (M Figure 12) for machine
emergency stop.
NOTE
The brush motor, vacuum motor, drive motor and con-
trol circuit are protected by overload protector (P Fig-
ure
12
). When the overload protector trip, do not reset
it immediately without finding out the root cause, and
make sure the motor is cooling-off before reset.
Stopping the machine
9. Loosen the accelerate pedal (N, Figure 12), the machine stops run-
ning.
10. Press One-Start button (D, Figure 12) to stop brushes and vacuum
motor. The brushes and squeegee are lifted up from the floor auto-
matically. The vacuum system is closed after a few seconds delay.
11. Turn the key switch to “OFF”.
12. Ensure the machine is stopped.
MACHINE OPERATION (SCRUBBING AND DRYING)
1. Start the machine according to procedures in previous paragraphs.
2. Start cleaning by following procedures in section of “Starting the machine”.
3. If necessary, stop the machine to adjust squeegee according to section “Adjusting the balance of squeegee”.
CAUTION!
To avoid any damage to the floor surface, turn off the brush/pad
-
holder when the machine stop
in one place.
NOTE
For correct scrubbing/drying of floors at the sides of walls, we suggest to go near the walls with
right side (Bumper wheel side) of the machine as shown in below Figure 13.
Figure 13
J
AGM
F
L
C
A
I
H
D
M
N
B
P
100%
G
E
K
Figure 12

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16
Figure 14
Figure 15
DETERGENT AMOUNT ADJUSTMENT
(Only for machine with Chemical System)
With the same detergent amouont, solution
concentration can be changed by adjusting
water flow through water flow adjusting
buttons (C, D, Figure 14).
1. Twist the rotary knob (B, Figure14) by clockwise or anti-
closewise to increase or reduce the detergent amount. Turn
the rotary knob anti-clockwise to the end to stop using
detergent.
2. There are four level detergent amount indicated by four
colors as shown on the control panel (A, Figure 14)
a. Level 1: () --- average detergent amount 0.4%
b. Level 2: () --- average detergent amount 0.75%
c. Level 3: () --- average detergent amount 1.5%
d. Level 4: () --- average detergent amount 2.5%
BATTERY POWER DISPLAY
When the batteries are full of power, five rectangular together
with “100%” at the right bottom of LCD screen are shown. (A,
Figure 15). When only one rectangular together with “10%” is
shown (B, Figure 15) indicates the battery power is low, the
brush motor and vacuum motor stop work. Please re-charge the
batteries.
CAUTION!
To avoid damaging the batteries
and shortening
their working life, do not use the machine once
the batteries are flat.
B
A
2.5%
1.5%
0.75%
0.4%
D
C
D
C
GEL 100%
B
A
GEL 10%

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17
RECOVERY TANK EMPTYING
When the red LCD (C, Figure 15) turns on indicates the
recovery tank (A, Figure 16) is full, the vacuum motor stops
work to dry the floor, please empty the recovery tank as
flowing steps:
1. Turn off the brush system and vacuum system, lift up
squeegee and brushes.
2. Drive the machine to draining area.
3. Drain the recovery tank using the drain hose (B, Figure
16), then clean the recovery tank.
CAUTION!
When draining the wastewater, the drain hose
must be folded (C, Figure 1
6
) and put to a low
position (D, Figure 1
6
) before opening the
drain hose cover. Do not make the outlet of the
drain hose upward to drain the water
vertically in order to avoid wastewater spilling
onto the operator.
Solution/clean water tank emptying
1. Perform steps 1 to 4 in chapter “Recovery water tank
emptying”.
2. Empty the solution tank through the outlet cover (E,
Figure 16). And then, rinse the tank with clean water.
The water can also be drained by unplugging the drain
connection (F, Figure 16).
AFTER USING THE MACHINE
After working, before leaving the machine:
1. Remove the brushes/pad holder according to
disassembly description in previous section.
2. Empty the solution tank and recover tank as shown in
previous paragraph.
3. Perform the daily maintenance procedures (see the
Maintenance chapter).
4. Store the machine in a clean and dry place, with the
brushes/ pad-holders and the squeegee lifted or removed.
MACHINE LONG INACTIVITY
If the machine is not going to be used for more than 30 days,
proceed as follows:
1. Perform the procedures shown in “AFTER USING THE
MACHINE” paragraph.
2. Disconnect the battery connector (G, Figure17).
USING FOR THE FIRST TIME
After nine hours using of the machine for the first time, please
check if any damage or abnormal situation, check whether the
fasteners or fittings is loose.
F
B
E
A
C
D
G
Figure 16
Figure 17

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18
MAINTENANCE
WARNING!
Maintenance procedures must be performed after the machine is
turned off and the battery
charger cable is disconnected. In addition, carefully read the safety chapters in the guide.
All scheduled or extraordinary maintenance procedures must be performed by qualified personnel or an authorized
Service Center. This guide only describes the general and common maintenance procedures.
For other maintenance procedures that are in below maintenance schedule table, please refer to the Service Manual
that can be consulted at any Service Center.
SCHEDULED MAINTENANCE TABLE
CAUTION!
The procedure marked with (1) must be performed when the machine is used after 9 hours for
the first time.
The procedure marked with (2) must be done by Service Center that qualified by
Nilfisk.
Procedure
Daily, after
each use
Weekly
semiannually
Yearly
Battery charging
Squeegee cleaning
Brush/Pad-holder cleaning
Tank cleaning
Tank sealing strip inspection
Squeegee blade check and replacement
Cleaning water filter cleaning
Suction filter cleaning
WET battery fluid level check
Screw and nut tightness inspection
(1)
Brush/Pad-holder carbon brush check or
replacement
(2)
Suction motor carbon brush check or
replacement
(2)
Drive system motor carbon brush check or
replacement
(2)
Add lubricating oil for rotating parts
(1)

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19
BATTERY CHARGING
NOTE
Re
-
charge the batteries when there is only
two or less two rectangular show at the right
bottom LCD screen
(A, Figure18),
or after
every time cleaning work.
CAUTION
Always keep the battery in a state of
charged can extend its lifetime.
CAUTION
Please charge the battery as soon as possible
if the battery level is low. Otherwise, the
lifespan of battery can be reduced. It is
better to check the battery at least once a
week.
Warning!
When using lead (WET) batteries, they may
emit inflammable gas under normal use,
must keep sparks, flames, smoking materials
and radiating, illuminating and burning
items away from batteries. When charging
lead (WET) batteries, they may emit
hydrogen gas which may cause explosive.
Must ensure the charging environment is
well ventilated and away from naked flames
and recovery tank is opened.
CAUTION!
To be especial careful when battery is
charging, because there may be leaked acid
in the process of charging.
Battery acid is corrosive, if it accidentally
comes into contact with the skin or eyes,
rinse immediately with plenty of clean water
and go to see a doctor.
The preparation steps to charge the batteries
1. Open the recovery tank cover (E, Figure 18) to check if the recovery tank (C Figure 18) is empty, or empty the
recovery tank through the drain hose.
2. Drive the machine to designated charging area.
3. Turn the key switch (B Figure 18) to “O”.
4. Carefully lift the recovery tank (C Figure 18).
5. This step only for WET batteries:
x Clean the battery surface if necessary.
x Check the battery electrolyte level of the batteries (D Figure 18), if necessary, open the cover to full fill
electrolyte, and then recover it.
x Keep the cover opened during charging.
6. Select one of below charging mode base on the selected charger type.
A
E
D
C
B
F
G
AB
E
C
D
Figure 18
Figure 19