Nilfisk-Advance AS1050R User manual

English
04/2021 (Rev.02) Form No. VR41020
AS1050R
50000593/ 50000594/ 50000595/ 50000596
AS1050R Service Manual

Service Manual-AS1050R Table of Contents i
Table of Contents
Table of Contents.........................................................................................................................................................i
03 General Information..............................................................................................................................................5
Machine General Description.................................................................................................................................5
Service Manual Purpose and Field of Application..................................................................................................5
Other Reference Manuals ......................................................................................................................................5
Conventions............................................................................................................................................................5
Service and Spare Parts..........................................................................................................................................6
Serial Number Label ...............................................................................................................................................6
Safety......................................................................................................................................................................7
General Safety Instructions....................................................................................................................................7
Lifting Machine.......................................................................................................................................................8
Transporting Machine ............................................................................................................................................8
Technical Data ........................................................................................................................................................9
Maintenance Schedule........................................................................................................................................ 10
Machine Structure............................................................................................................................................... 11
Machine Structure (continues)............................................................................................................................ 12
Control Panel....................................................................................................................................................... 13
Service and Diagnostic Equipment...................................................................................................................... 14
Dimensions (continues)....................................................................................................................................... 15
04 Control System ................................................................................................................................................... 16
Functional Description......................................................................................................................................... 16
Component Locations.......................................................................................................................................... 18
Removal and Installation..................................................................................................................................... 19
Troubleshooting .................................................................................................................................................. 21
Specifications....................................................................................................................................................... 32
10 Chassis System.................................................................................................................................................... 46
Chassis (main parts)............................................................................................................................................. 46
14 Wheel System-Traction ...................................................................................................................................... 47
Functional Description......................................................................................................................................... 47
Wiring Diagram.................................................................................................................................................... 48
Component Locations.......................................................................................................................................... 49

Service Manual-AS1050R Table of Contents ii
Component Locations (continues) ...................................................................................................................... 50
Removal and Installation..................................................................................................................................... 51
Troubleshooting .................................................................................................................................................. 54
Specifications....................................................................................................................................................... 56
24 Electrical System................................................................................................................................................. 57
Functional Description......................................................................................................................................... 57
Wiring Diagram.................................................................................................................................................... 58
Component Locations.......................................................................................................................................... 59
Maintenance and Adjustment............................................................................................................................. 60
Setting Installed Battery Type ............................................................................................................................. 60
Removal and Installation..................................................................................................................................... 61
Troubleshooting .................................................................................................................................................. 63
Specifications ........................................................................................................................................................ 63
Electrical Wiring Diagram.................................................................................................................................... 71
30 Solution System.................................................................................................................................................. 72
Functional Description......................................................................................................................................... 72
Wiring Diagram.................................................................................................................................................... 72
Component Locations.......................................................................................................................................... 73
Maintenance and Adjustment............................................................................................................................. 74
Solution Filter Cleaning ....................................................................................................................................... 74
Removal and Installation..................................................................................................................................... 75
Troubleshooting .................................................................................................................................................. 76
Specifications....................................................................................................................................................... 77
34 Scrub System ...................................................................................................................................................... 78
Functional Description......................................................................................................................................... 78
Wiring Diagram.................................................................................................................................................... 79
Brush Deck Actuator System ............................................................................................................................... 80
Component Locations.......................................................................................................................................... 81
Removal and Installation..................................................................................................................................... 82
Maintenance and Adjustment............................................................................................................................. 85
Troubleshooting .................................................................................................................................................. 87
Specifications....................................................................................................................................................... 89
38 Squeegee System................................................................................................................................................ 90

Service Manual-AS1050R Table of Contents iii
Functional Description......................................................................................................................................... 90
Wiring Diagram.................................................................................................................................................... 90
Component Locations.......................................................................................................................................... 91
Maintenance and Adjustment............................................................................................................................. 92
Removal and Installation..................................................................................................................................... 96
Troubleshooting .................................................................................................................................................. 98
Specifications....................................................................................................................................................... 98
40 Recovery System................................................................................................................................................. 99
Functional Description......................................................................................................................................... 99
Wiring Diagram.................................................................................................................................................... 99
Component Locations........................................................................................................................................ 100
Removal and Installation................................................................................................................................... 101
Maintenance and Adjustment........................................................................................................................... 104
Recovery Tank and Seals ................................................................................................................................... 104
Cleaning the Recovery Tank .............................................................................................................................. 105
Troubleshooting ................................................................................................................................................ 106
Specifications..................................................................................................................................................... 107

Service Manual-AS1050R 03 General Information 5
03 General Information
Machine General Description
The AS1050R is a ride-on commercial floor scrubbing machine designed to wash and dry commercial floors. The machine is
powered by on-board batteries. The machine is equipped with two single disc scrubbing brushes, a rear squeegee with vacuum
suction. The machine also has a solution tank and recovery tank.
Service Manual Purpose and Field of Application
This Service Manual is a technical resource intended to aid service personnel in maintaining and repairing the AS1050R
to ensure optimum performance and long service life. Please read this manual carefully before performing any
maintenance and repair procedure on machine.
Other Reference Manuals
Document name
Document number Document type
AS1050R Instructions for Use
VR41002
Instructions for Use
AS1050R part list
VR41008
part list
These manuals are available at:
–Local Nilfisk Retailer
–https:// www.nilfisk.com/
Conventions
Forward, backward, front, rear, left or right are referring from the operator’s directions when the operator is in driving
position.

Service Manual-AS1050R 03 General Information 6
Service and Spare Parts
ServiceandrepairsmustbeperformedonlybyauthorizedpersonnelorService Centers.Theauthorized personnel must
be trained directly by the manufacturer and use original spare parts and accessories. Customers can find the Model
No. indicated on the label to order spare parts.
(Retailer label here)
Serial Number Label
The Model No. and Serial No. are shown on the back of control housing. This information is needed when ordering repair
parts. Use the following table to write down machine identification data.
MODEL NUMBER
SERIAL NUMBER
Figure 1

Service Manual-AS1050R 03 General Information 7
Safety
Symbols
It is important to read this manual before servicing the machine. It contains information for safety protection and preventive
action. The symbols below are used to help you recognize this information.
Warning: Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury
Caution: Indicates a potentially hazardous situation which, if not avoided, could result in
minor or moderate injury.
Caution: When used without the Safety Alert Symbol, indicates a potential situation which,
if not avoided, could result in property or machine damage.
Note: Indicates the important information.
General Safety Instructions
These safety instructions are included to warn you of potential body injury or property damage.
Caution! Read and understand all the safety warnings and instructions. Failure to follow
them may result in electric shock, fire, and/or serious injury.
–To avoid personal injury, this machine should be used only by properly trained
and authorized persons.
–Do not operate the machine near toxic, dangerous, flammable and/or explosive
materials. This machine is not suitable for collecting dangerous or hazardous
materials.
–In case of fire, use a powder fire extinguisher, not a water-based extinguisher.
–Do not use on surfaces having a gradient exceeding what is marked on the machine.
While on ramps, avoid sudden stops if loaded. Avoid abrupt sharp turns.
–Disconnect the power source and/or batteries before servicing electrical
components.
–Never work under a machine without safety blocks or stands supporting
the machine.
–Do not dispense flammable cleaning agents, operate the machine on or near
these agents, or operate in areas where flammable liquids exist.
–When using floor cleaning detergents, follow all safety and handling instructions
of their respective manufacturer.
–Battery charging may produce highly explosive hydrogen gas. Charge the
batteries only in well-ventilated areas and away from ignition sources or open
flames.
–When operating this machine, ensure that third parties, particularly children, are
not endangered.
–Take precautions to prevent hair, jewelry, or loose clothing from becoming caught
in moving parts.

Service Manual-AS1050R 03 General Information 8
Caution!
Before transporting the machine on an open truck or trailer, make sure that . . .
–
–
–
–
All covers are closed
The recovery tank and detergent tank are empty
Batteries (if equipped) are disconnected
The machine is securely fastened to the means of transport.
Property Damage Messages
–Storage and operation temperature must be above 0°C and humidity between
30% and 95%, non-condensing.
–Before use, all doors and hoods should be properly latched.
–This machine is not approved for use on public paths or roads.
–This machine is only approved for use on hard surface.
–Use brushes and pads supplied with the machine or those specified in the User
Manual. Using other brushes or pads could reduce safety.
–Do not wash the machine with direct or pressurized water jets, or with corrosive
substances.
–Do not allow the brush/pad to operate while the machine is stationary to avoid
damaging the floor.
–Use only factory authorized parts and accessories.
–This machine must be properly disposed of in accordance with local laws and
regulations.
Lifting Machine
Caution! Never work under a machine without safety stands or blocks supporting
the machine.
Transporting Machine

Service Manual-AS1050R 03 General Information 9
Technical Data
Parameter Type
AS1050R
Voltage
36 V
Rated power (input)
125A/4500W
IP protection class
IP24
Solution tank capacity
200L / 53 Gal.
Recovery tank capacity
200L / 53 Gal.
Scrubbing width
980mm / 38.58 Inches
Brush/Pad diameter
508 mm x 2 /20 Inches x 2
Brush/Pad pressure (max)
50-90 Kg /110-198 Lbs.
Brush motor power (input)
2 X 1000 Watt / 2 X 1.5 HP
Brush speed in normal mode
240 RPM
Brush speed in ECO mode
175 RPM
Solution flow (max) per setting/minute
(1.6/2.3/3.3/4.6) Liters / 0.42/0.61/0.87/1.22Gal
Sound pressure level (one vacuum motor)
72 ±3 dB (A)
Sound pressure level (two vacuum motors) (*)
75 ±3 dB (A)
Sound pressure level in ECO mode or in silent mode
69 ±3 dB (A)
Vacuum motor power
600 W / 0.8 HP
USB charging
5V 2.4A MAX.
Productivity (max)
7840 m2/h/84389 ft2/h
Working speed
0 –8 Km / 0 - 5 Miles per hour
Forward speed
0 –8 Km / 0 - 5 Miles per hour
Reverse speed
0 –5 Km / 0 –3.1 Miles per hour
Drive motor power (input)
1600 W / 2.1 HP
Min. aisle turn
2650mm/104 Inches
Climbing capacity (max) transport
20%
Climbing capacity (max) working
16%
Driving wheel diameter
340mm / 13.4 Inches
Driving wheel specific pressure on floor
0.68 N/mm2
Front wheel diameter
250 mm / 10 Inches
Front wheel specific pressure on floor
0.62 N/mm2
Handle vibration level (max)
< 2.5 m/s2
Battery compartment size without tray (L x W x H)
(680x560x450) mm / 26.7 x 22 x 17.7 Inches
Battery compartment size with tray (L x W x H) (*)
(665x550x430) mm / 26.1 x 21.6 x 16.9 Inches
Machine length without front bumper
1875mm/73.8 Inches
Machine width without squeegee
1077mm/42.4 Inches
Machine height
1350 mm / 53 Inches
Machine weight with empty tanks (without batteries)
398 Kg / 853.6 Lbs.
Gross vehicle Weight (GVW)
870 Kg / 1914 Lbs.
Shipping weight
490 Kg / 1078 Lbs.
Packing dimensions (L x W x H)
(2110 x 1220 x 1535 mm) / (83x 48 x 60.4 Inches)
(*): Optional

Service Manual-AS1050R 03 General Information 10
Maintenance Schedule
CAUTION!
The procedure marked with (1) must be performed when machine is used after 8 hours for the first time. The
procedure marked with (2) must be done by Service Center qualified by our company.
Procedure
Daily, after each use
Weekly
Semiannually
Yearly
Battery charging
Squeegee cleaning
Brush/Pad-holder cleaning
Tank cleaning
Tank gasket strip inspection
Debris collection box cleaning
Brush/Pad cleaning
Splash guard cleaning
Squeegee blade check and replacement
Solution filter cleaning
Vacuum intake filter cleaning
WET battery fluid level check
Screw and nut tightness inspection
（1）
Add lubricating oil for rotating parts （like brake oil）
（1）
Brush motor carbon brush check or replacement
（2）
Vacuum motor carbon brush check or replacement
（2）
Drive system motor carbon brush check or replacement
（2）

Service Manual-AS1050R 03 General Information 11
Machine Structure
Figure 2

Service Manual-AS1050R 03 General Information 12
Machine Structure (continues)
Figure 3

Service Manual-AS1050R 03 General Information 13
Control Panel
Figure 4

Service Manual-AS1050R 03 General Information 14
Service and Diagnostic Equipment
Besides a complete set of standard meters, the following instruments are necessary to perform quick check and
repairs on machines:
 Digital Voltmeter (DVM)
 Amp clamp with possibility of making DC measurements
 A copy of the User Manual and Spare Parts List of the machine to be serviced.

Service Manual-AS1050R 03 General Information 15
Dimensions (continues)

Service Manual-AS1050R 04 Control System 16
04 Control System
Functional Description
The machine utilizes a Dash Board (EB1) to turn on
various machine functions and a Main Controller (EB2)
to control outputs. When Dash Board (EB1) receives
inputs from operator, it activates various components
and functions accordingly.
•Brush motor (M2&M3)
•Vacuum motor (M4&M5(Optional))
•Release brush
•Solution valve (EV1)
•Deck & Squeegee actuator (M6&M7)
•Water pump (M8)
•Battery type setting
•LED headlight (LED1&LED2)
The Dash Board (EB1) also shows battery capacity,
running time, and error messages on LCD monitor.
The USB charger for mobile phone (EB3) can
provide 5V/2.4A DC power.
The warning lamp is always on when machine is
powered on.
The communication protocol between Dash Board
(EB1) and Main Controller (EB2) is CAN protocol.
Block 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
TIGER 3 Control System
Traction+
EB2 Main Controller
B+
B-
B+
B- M
M1
Traction Motor
+
-
CAN H
Battery
36V
USB Charger
KSI
EB1 Dash Board
Brush Motor M2&M3
Vacuum Motor M4&M5(Optional)
Brush Deck Actuator M6
CAN H
VR1
POT High
POT Low
Speed Limit POT
One-button start
Vacuum system adjustment button
Solution flow adjusting buttons
ECO mode button
Brush pressure adjusting buttons
Key Switch Input
LCD Display&LED Indicators
Proximity Sensor SQ1&SQ2
Throtle 0-5V
CAN LCAN L
EB3
Traction-
Electromagnetic Brake
Solution Valve EV1
Squeegee Actuator M7
Warning Lamp
Water Pump M8
Seat Switch Input Signal
Recovery Tank Full Input Signal
Brake Signal
Solution Signal
LED Headlights LED1&LED2
Buzzer SPK1
Bush/pad-holder click on/off
Horn button
Front light button
Forward-reverse button
120 Ohm 120 Ohm
Figure 1

Service Manual-AS1050R 04 Control System 17
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
CAN Bus
Dash Board(EB1)
RX
TX
120 Ohm
RX
TX
120 Ohm
Transceiver Transceiver
Main Controller(EB2)
CAN Bus
CAN-L
CAN-H
CAN Bus Communication
CAN Bus communication was originally created for the automotive industry to allow distributed modules (Nodes)
throughout the vehicle to communicate with each other over a single serial channel without any single Node being the
Master of the communication channel. This means that each module broadcasts what it has to say, and all other modules
on the CAN Bus see the message but pay attention only to those messages they need to know about.
The AS1050R has 2 CAN Bus Nodes as Dash Board (EB1) and Main Controller (EB2). Dash Board (EB1) receives
commands from operator and then transmit this information to Main Controller (EB2) through CAN Bus to perform them
accordingly.
The CAN bus has one wire being low and the other wire high, voltage-wise. To send a data bit, the module pulls the high
and low wires apart, voltage-wise. Both modules monitor this to detect a communication message, which is a string of low
and high binary pulses. However, the binary logic states are reverse of typical, in that a logic-1 is recessive, and the
difference between CANH and CANL is low (near zero). A logic-0 is the dominant bit, and the difference between CANH
and CANL is high (approximately 2.5V).
Because none of the modules represent the Master of the bus system, any of the modules can initiate a bus transmission
any time there is not already traffic on the bus. When the module detects inactivity on the bus, it transmits a dominate bit,
and begins sending the message priority level bits. But at the same time, it is also monitoring the bus itself to detect if a
higher priority message was being initiated at the same time. The message with the higher priority level will have the bus
high for the longest period, and therefore, that module knows that it is sending the highest priority message. The other
module ceases its transmission and waits until the bus is available again.

Service Manual-AS1050R 04 Control System 18
Component Locations
•Dash Board (EB1)
•Main Controller (EB2)
•USB charger (EB3)
•Main contactor (K1)
•Warning lamp
•Main ground lug
Figure 2
Figure 3
Figure 4
Figure 5
Dash Board (EB1)
Main Controller (EB2)
Main contactor (K1)
USB charger (EB3)
Warning lamp
Figure 6
Main ground lug
Figure 7

Service Manual-AS1050R 04 Control System 19
Removal and Installation
Warning! This procedure must be performed by qualified personnel only.
1. Park machine on level ground.
2. Switch off machine.
Dash Board (EB1)
1.Prepare necessary tools, cross screwdriver and socket spanner.
2.Remove 7 screws on Dash Board, detach Dash Board (Figure 8).
3.Disconnect all harnesses and terminals which are used for connecting Dash Board, then take out
Dash Board (Figure 9 and 10).
4.Use sleeve to take out 9 screws which are used for fastening PCBA (Figure 11).
5.Assemble components in reverse order of disassembly.
Figure 8
Figure 9
Figure 10
Figure 11
Remove 7 screws on Dash Board
Disconnect all harnesses and terminals
Remove PCBA’s 9 screws

Service Manual-AS1050R 04 Control System 20
Main Controller (EB2)
1. Prepare necessary tools, cross screwdriver.
2. Remove 4 screws on cover of electric control box, then take off cover (Figure 12).
3. Disconnect all harnesses connected to Main Controller (Figure 13).
4. Remove 2 screws that are used for fixing Main Controller and take out Main Controller (Figure 14).
5. Assemble components in reverse order of disassembly to assemble Main Controller (EB2).
Figure 14
Figure 13
Figure 12