Nilfisk-Advance SC350 User manual

SERVICE MANUAL
9098840000
Edition 1 2010-10
setting standards
Printed in Italy
SC350

SERVICE MANUAL ENGLISH
SC350 9098840000 1
TABLE OF CONTENTS
GENERAL INFORMATION.............................................................................................................................................. 3
CONVENTIONS .............................................................................................................................................................................. 3
MACHINE LIFTING ......................................................................................................................................................................... 3
MACHINE TRANSPORTATION....................................................................................................................................................... 3
OTHER REFERENCE MANUALS................................................................................................................................................... 3
SAFETY........................................................................................................................................................................................... 3
SYMBOLS ....................................................................................................................................................................................... 3
GENERAL INSTRUCTIONS............................................................................................................................................................ 4
TECHNICAL DATA........................................................................................................................................................................... 6
DIMENSIONS .................................................................................................................................................................................. 7
MAINTENANCE............................................................................................................................................................................... 8
SCHEDULED MAINTENANCE TABLE ........................................................................................................................................... 8
MACHINE NOMENCLATURE ......................................................................................................................................................... 9
DETERGENT SUPPLY SYSTEM................................................................................................................................... 11
SOLUTION SYSTEM SOLENOID VALVE DISASSEMBLY/ASSEMBLY........................................................................................11
TROUBLESHOOTING................................................................................................................................................................... 12
WIRING DIAGRAM........................................................................................................................................................................ 12
BRUSHING SYSTEM..................................................................................................................................................... 13
BRUSH MOTOR ELECTRICAL INPUT CHECK............................................................................................................................ 13
BRUSH MOTOR DISASSEMBLY/ASSEMBLY.............................................................................................................................. 14
BRUSH DECK DISASSEMBLY/ASSEMBLY ................................................................................................................................. 15
TROUBLESHOOTING................................................................................................................................................................... 16
WIRING DIAGRAM........................................................................................................................................................................ 16
RECOVERY WATER SYSTEM ...................................................................................................................................... 17
VACUUM SYSTEM MOTOR ELECTRICAL INPUT CHECK ......................................................................................................... 17
VACUUM SYSTEM MOTOR DISASSEMBLY/ASSEMBLY ........................................................................................................... 18
TROUBLESHOOTING................................................................................................................................................................... 19
WIRING DIAGRAM........................................................................................................................................................................ 19
OTHER SYSTEMS......................................................................................................................................................... 20
SCREW AND NUT TIGHTENING CHECK.................................................................................................................................... 20
ELECTRICAL SYSTEM ................................................................................................................................................. 21
BATTERY CHARGER SETTING DIPSWITCH CONFIGURATION ............................................................................................... 21
ELECTRICAL COMPONENT LAYOUT ......................................................................................................................................... 22
WIRING DIAGRAM........................................................................................................................................................................ 23

ENGLISH SERVICE MANUAL
29098840000 SC350

GENERAL INFORMATION
SERVICE MANUAL ENGLISH
SC350 9098840000 3
GENERAL INFORMATION
CONVENTIONS
Forward, backward, front, rear, left or right are intended with reference to the operator’s position, that is to say in driving position.
MACHINE LIFTING
WARNING!
Do not work under the lifted machine without supporting it with safety stands.
MACHINE TRANSPORTATION
WARNING!
Before transporting the machine, make sure that:
All covers are closed.–
The battery is disconnected.–
The machine is securely fastened to the means of transport.–
OTHER REFERENCE MANUALS
The following manuals are available at Nilsk Literature Service Department:
Documentation CD-ROM - Nilsk Form Number 9098867000–
SC350 User Manual - Nilsk Form Number 9098868000–
SC350 Spare Parts List - Nilsk Form Number 9098869000–
SC350 Quick Start Guide - Nilsk Form Number 9098866000–
SAFETY
The following symbols indicate potentially dangerous situations. Always read this information carefully and take all necessary
precautions to safeguard people and property.
SYMBOLS
DANGER!
It indicates a dangerous situation with risk of death for the operator.
WARNING!
It indicates a potential risk of injury for people or damage to objects.
CAUTION!
It indicates a caution related to important or useful functions.
Pay careful 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 User Manual before performing any procedure.

GENERAL INFORMATION
ENGLISH SERVICE MANUAL
49098840000 SC350
GENERAL INSTRUCTIONS
Specic warnings and cautions to inform about potential damages to people and machine are shown below.
DANGER!
Before performing any machine maintenance, repair, cleaning or replacement procedure, disconnect the–
battery connector and turn the main switch to “0”.
This machine must be used by properly trained operators only.–
Keep the battery away from sparks, ames and incandescent material. During the normal operation explosive –
gases are released.
Do not wear jewels when working near electrical components.–
Do not work under the lifted machine without supporting it with safety stands.–
Do not operate the machine near toxic, dangerous, ammable and/or explosive powders, liquids or vapours: –
This machine is not suitable for collecting dangerous powders.
Battery charging produces highly explosive hydrogen gas. Keep the cover open during battery charging and –
perform this procedure in well-ventilated areas and away from naked ames.
WARNING!
Carefully read all the instructions before performing any maintenance/repair procedure.–
Before using the battery charger, ensure that frequency and voltage values, indicated on the machine serial –
number plate, match the electrical mains voltage.
Do not pull or carry the machine by the battery charger cable and never use the battery charger cable as–
a handle. Do not close a door on the battery charger cable, or pull the battery charger cable around 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 use the machine if the battery charger cable or plug is damaged. If the machine is not working as it–
should, has been damaged, left outdoors or dropped into water, return it to the Service Center.
To reduce the risk of re, electric shock, or injury, do not leave the machine unattended when it is plugged –
in. Before performing any maintenance procedure, disconnect the battery charger cable from the electrical
mains.
Do not smoke while charging the battery.–

GENERAL INFORMATION
SERVICE MANUAL ENGLISH
SC350 9098840000 5
WARNING!
Always protect the machine against the sun, rain and bad weather, both under operation and inactivity–
condition. Store the machine indoors, in a dry place: This machine must be used in dry conditions, it must
not be used or kept outdoors in wet conditions.
Before using the machine, close all doors and/or covers as shown in the User Manual.–
Do not allow to be used as a toy. Close attention is necessary when used near children.–
Use only as shown in this Manual. Use only Nilsk’s recommended accessories.–
Take all necessary precautions to prevent hair, jewels and loose clothes from being caught by the machine–
moving parts.
Pay attention to the machine moving parts. When using the machine, the deck can abruptly turn by 180°.–
Do not use the machine on incline.–
Do not tilt the machine more than the angle indicated on the machine itself, in order to prevent instability.–
Do not use the machine in particularly dusty areas.–
Use the machine only where a proper lighting is provided. –
While using this machine, take care not to cause damage to people or objects.–
Do not bump into shelves or scaffoldings, especially where there is a risk of falling objects.–
Do not lean liquid containers on the machine, use the relevant can holder.–
The machine working temperature must be between 0°C and +40°C.–
The machine storage temperature must be between 0°C and +40°C.–
The humidity must be between 30% and 95%.–
When using oor cleaning detergents, follow the instructions on the labels of the detergent bottles. –
To handle oor cleaning detergents, wear suitable gloves and protections. –
Do not allow the brushes to operate while the machine is stationary to avoid damaging the oor.–
In case of re, use a powder re extinguisher, not a water one.–
Do not tamper with the machine safety guards and follow the ordinary maintenance instructions–
scrupulously.
Do not allow any object to enter into the openings. Do not use the machine if the openings are clogged.–
Always keep the openings free from dust, hairs and any other foreign material which could reduce the air
ow.
Do not remove or modify the plates afxed to the machine.–
This machine cannot be used on roads or public streets.–
Pay attention during machine transportation when temperature is below freezing point. The water in the–
recovery tank or in the hoses could freeze and seriously damage the machine.
Use brushes and pads supplied with the machine and those specied in the User Manual. Using other –
brushes or pads could reduce safety.
In case of machine malfunctions, ensure that these are not due to lack of maintenance. Otherwise, request –
assistance from the authorised personnel or from an authorised Service Center.
If parts must be replaced, require ORIGINAL spare parts from an Authorised Dealer or Retailer.–
To ensure machine proper and safe operation, the scheduled maintenance shown in the relevant chapter of–
this Manual, must be performed by the authorised personnel or by an authorised Service Center.
Do not wash the machine with direct or pressurised water jets, or with corrosive substances.–
The machine must be disposed of properly, because of the presence of toxic-harmful materials (battery, etc.), –
which are subject to standards that require disposal in special centres (see Scrapping chapter on the User
Manual).

GENERAL INFORMATION
ENGLISH SERVICE MANUAL
69098840000 SC350
TECHNICAL DATA
General SC350
Min/max machine length at the handlebar 810/1,270 mm
Machine width 470 mm
Min/max machine height with adjustable handlebar 550/1,000 mm
Weight without battery and with empty tanks 42 kg
Maximum weight with battery and full tanks (GVW) 80 kg
Cleaning width 370 mm
Battery compartment size 350x175x240 mm
Diameter of wheels on xed axle 200 mm
Brush/pad diameter 370 mm
Rear wheel pressure on the oor (*) 0.5 N/mm2
Brush/pad pressure on the oor 18 kg
Brush/pad pressure with full tank 27 kg
Performance SC350
Vacuuming 710 mmH2O
Min/max solution ow SET1: 0.25 litres/min
SET2: 0.5 litres/min
Brush/pad-holder motor speed 140 rpm
Sound pressure level at workstation (ISO 11201, ISO 4871, EN 60335-2-72) (LpA) 65 dB(A) ± 3dB(A)
Machine sound pressure level (ISO 3744, ISO 4871, EN 60335-2-72) (LwA) 84 dB(A)
Vibration level at the operator’s arms (ISO 5349-1, EN 60335-2-72) < 2.5 m/s2
Vacuum system motor power 200 W
Brush/pad motor power 240 W
Maximum gradient when working 2%
Battery voltage 12 V
Standard battery 12V 55AhC20 AGM Spiralcell
Standard battery autonomy 1 hour
Solution tank capacity 11 litres
Recovery tank capacity 11 litres
Machines have been tested under the following conditions:(*)
Maximum battery size•
Maximum brush and squeegee size•
Full clean water tank•
Optional components installed•
Weight on wheels checked•
Print on the oor checked on cement for each single wheel•
Result expressed as maximum value for rear wheels•

GENERAL INFORMATION
SERVICE MANUAL ENGLISH
SC350 9098840000 7
DIMENSIONS
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GENERAL INFORMATION
ENGLISH SERVICE MANUAL
89098840000 SC350
MAINTENANCE
The lifespan of the machine and its maximum operating safety are ensured by correct and regular maintenance.
WARNING!
Read carefully the instructions in the Safety chapter before performing any maintenance procedure.
The following table provides the scheduled maintenance. The intervals shown may vary according to particular working conditions,
which are to be dened by the person in charge of the maintenance.
For instructions on maintenance procedures, see the following paragraphs.
SCHEDULED MAINTENANCE TABLE
Procedure Daily, after using
the machine Weekly Every six months Yearly
Squeegee cleaning
Brush cleaning
Tank and vacuum grid cleaning
Squeegee blade check and/or replacement
Battery charging
Screw and nut tightening check (1)
Brush deck rubber pad check and/or replacement
Brush deck end-of-stroke cable check and/or replacement
Brush deck rubber ange check and/or replacement
And after the rst 8 working hours.(1)

GENERAL INFORMATION
SERVICE MANUAL ENGLISH
SC350 9098840000 9
MACHINE NOMENCLATURE
Throughout this Manual you will nd numbers in brackets – for example: (2). These numbers refer to the components indicated in
these nomenclature pages. Refer to these pages whenever you need to identify a component mentioned in the text.
1
10
6
4
26
29
22
13
17
15
14
21
24
25
23
12
16
19
20
18
8
7
9
4
5
27
28
11
2
3
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Handlebar with control panel (see the following paragraph)1.
Handlebar inclination adjusting lever2.
Start-up and program selection knob3.
Accessory and battery compartment cover4.
Cover latch5.
Can holder6.
Battery connection connector7.
GEL/AGM battery8.
Battery charger9.
Battery charger cable10.
Battery charger cable holder11.
Brush/pad-holder deck12.
Brush deck gearmotor13.
Squeegee vacuum hose14.
Splash-shield15.
Deck bumper wheels16.
Deck support wheels17.
Squeegee18.
Squeegee blades assembly19.
Squeegee fasteners20.
Solution tank ller plug21.
Solution tank22.
Recovery tank23.
Transparent cover with vacuum grid24.
Vacuum grid with automatic shut-off oat25.
Vacuum system motor26.
Serial number plate/technical data/conformity certication27.
Fuses28.
Rear wheels on xed axle29.

GENERAL INFORMATION
ENGLISH SERVICE MANUAL
10 9098840000 SC350
MACHINE NOMENCLATURE (Continues)
Handlebar31.
Program selection knob32.
Program: brush - vacuum system - solution ow activation33.
Program: brush - solution ow activation34.
Program: vacuum system activation35.
Machine switching off (“0”)36.
Solution ow control switch37.
One drop - minimum solution ow•
Two drops - maximum solution ow •
Battery warning lights38.
Green warning light - charged battery•
Yellow warning light - semi-discharged battery•
Red warning light - discharged battery•
Machine start-up enabling push-button39.
Machine start/stop levers40.
Handlebar inclination adjusting lever41.
33
36
41
40 3739
32
34
35
31
4038
P100419

DETERGENT SUPPLY SYSTEM
SERVICE MANUAL ENGLISH
SC350 9098840000 11
DETERGENT SUPPLY SYSTEM
SOLUTION SYSTEM SOLENOID VALVE DISASSEMBLY/ASSEMBLY
Disassembly
Place the machine on a hoisting system (if available), then lift it. Otherwise, drive the machine on a level oor.1.
Make sure that the battery connector is disconnected.2.
Remove the cover and the solution and recovery water tanks.3.
Remove the solenoid valve power supply connector (A).4.
Disconnect the hoses (B) and (C) under the machine.5.
Remove the screws (D) and recover the washers.6.
Remove the solenoid valve (E) upwards.7.
Assembly
Assemble the components in the reverse order of disassembly and note the following:8.
When assembling the solenoid valve (E), the stamped arrow (F) must be tuned in the direction of the solution ow as •
shown in the gure.
BD C
E
AE
F
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DETERGENT SUPPLY SYSTEM
ENGLISH SERVICE MANUAL
12 9098840000 SC350
TROUBLESHOOTING
Small amount of solution or no solution reaches the brush
Possible causes:
The solution tank valve is clogged/dirty or broken (clean or replace).1.
The solenoid valve (EV) is broken or there is an open in the electrical connection (replace the solenoid valve/repair the2.
electrical connection).
There is debris in the solution tank clogging the output hole (clean the tank).3.
There is debris in the solution hoses and/or reducer clogging the ow (clean the hose).4.
The solution reaches the brush also when the machine is off
Possible causes:
There is dirt or calcium deposit on the solenoid valve gasket (clean).1.
The solenoid valve is broken (replace).2.
WIRING DIAGRAM
P100421

BRUSHING SYSTEM
SERVICE MANUAL ENGLISH
SC350 9098840000 13
BRUSHING SYSTEM
BRUSH MOTOR ELECTRICAL INPUT CHECK
WARNING!
This procedure must be performed by qualied personnel only.
Drive the machine on a level oor.1.
Remove the brush, as shown in the User Manual.2.
Place two wooden shims (A) under the side area of the deck as shown in the gure. Wooden shim thickness must be 40 mm.3.
WARNING!
Keep the wooden shims at an appropriate distance from the brush hub.
Turn the knob (32) to program (34).4.
Apply the amperometric pliers (A) on one cable (B) of the brush motor.5.
Turn on the brush by pressing the push-button (39) together with the levers (40), then check that the motor electrical input (C)6.
is:
6 to 8 A at 12V•
Turn off the brush by releasing the levers (40).7.
Turn the knob (32) to “0”.8.
Remove the amperometric pliers (A).
If the electrical input is higher, perform the following procedures to detect and correct the abnormal input:
Check if there is dust or dirt (ropes, cables, etc.) on the brush hubs.•
Disassemble the motor (see the procedure in the relevant paragraph), and check the condition of all its components.•
If the above-mentioned procedures do not lead to a correct electrical input, the motor must be replaced (see the procedure in
the relevant paragraph).
A
BC
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BRUSHING SYSTEM
ENGLISH SERVICE MANUAL
14 9098840000 SC350
BRUSH MOTOR DISASSEMBLY/ASSEMBLY
Disassembly
Place the machine on a hoisting system (if available), then lift it. Otherwise, drive the machine on a level oor.1.
Make sure that the battery connector is disconnected.2.
Disconnect the gearmotor connector (A) and the detergent hose (B).3.
Lift the machine and remove the brush.4.
Remove the screw (C), then remove the hub assembly (D).5.
Remove the 4 screws (E).6.
Remove the gearmotor (F).7.
Recover the key (G).8.
Assembly
Assemble the components in the reverse order of disassembly.9.
NOTE
For further information on deck components see the Spare Parts List.
B
CF
C
D
E
E
G
P100423

BRUSHING SYSTEM
SERVICE MANUAL ENGLISH
SC350 9098840000 15
BRUSH DECK DISASSEMBLY/ASSEMBLY
Disassembly
Place the machine on a hoisting system (if available), then lift it. Otherwise, drive the machine on a level oor.1.
Make sure that the battery connector is disconnected.2.
Disconnect the vacuum hose from the squeegee.3.
Disassemble the end-of-stroke cable fastener.4.
Lift the machine and remove the brush.5.
Remove the screw and the hub assembly (see the previous paragraph).6.
Remove the 4 screws (A), the ange (B) and disassemble the brush deck (C).7.
Check the rubber pads (D) for integrity; if necessary replace them by removing the 3 nuts (E).8.
NOTE
The rubber pads (D) allow the deck mechanical rotation by creating friction on the rotating brush.
Check the rubber joint (F) for integrity; if necessary remove the 13 screws (G), recover the nuts, anges (H) and (I), and 9.
replace it.
NOTE
The rubber joint (F) absorbs blows and vibrations between the deck and the machine.
Assembly
Assemble the components in the reverse order of disassembly and note the following:10.
When the rubber joint (F) is fastened to the deck, install the anges (I) by placing their tooth (J) as shown in the gure.•
NOTE
For further information on deck components see the Spare Parts List.
A
D
G
B
E
A
H
C
I
FJ
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BRUSHING SYSTEM
ENGLISH SERVICE MANUAL
16 9098840000 SC350
TROUBLESHOOTING
Open circuit
The resettable fuse (F1) determines an open in the supply circuit of the brush deck motor. This system allows to prevent the circuits
from being damaged under overload conditions.
The open in the fuse can be caused by the following:
Short circuit in the brush motor wiring harness; fault in the motor.1.
Overvoltage of the gearmotor.2.
One brush do not turn
Possible causes:
The brush motor electromagnetic switch wiring harness is damaged (repair).1.
The brush motor electromagnetic switch (ES1) is damaged (replace).2.
The brush motor fuse (F1) is tripped (reset).3.
The motor is faulty (repair or replace).4.
The wiring harness is damaged (repair).5.
Malfunction of the brush deck mechanical rotation system
Possible causes:
The rubber pads between deck and brush are worn (replace).1.
The rubber damping joint is worn (replace).2.
The end-of-stroke cable is broken (replace).3.
WIRING DIAGRAM
P100425

RECOVERY WATER SYSTEM
SERVICE MANUAL ENGLISH
SC350 9098840000 17
RECOVERY WATER SYSTEM
VACUUM SYSTEM MOTOR ELECTRICAL INPUT CHECK
WARNING!
This procedure must be performed by qualied personnel only.
Remove the solution and recovery water tanks.1.
Apply the amperometric pliers (A) on the cable (B).2.
Turn the knob (32) to program (35).3.
Check that the motor electrical input is between 15 and 18 A at 12 V.4.
Turn the knob (32) to “0”.5.
Remove the amperometric pliers (B).
If the electrical input is higher than specied, disassemble the vacuum system motor (see the procedure in the relevant
paragraph), and check the condition of its moving parts.
If the procedure do not lead to a correct electrical input, it is necessary to replace the motor.
A
B
C
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RECOVERY WATER SYSTEM
ENGLISH SERVICE MANUAL
18 9098840000 SC350
VACUUM SYSTEM MOTOR DISASSEMBLY/ASSEMBLY
Disassembly
Remove the solution and recovery water tanks.1.
Make sure that the battery connector is disconnected.2.
Disconnect the 2 connectors (A) of the motor (B).3.
Remove the acoustic insulation panel (C).4.
Remove the screws (D), recover the washers and nuts.5.
Remove the motor cover (E) and recover the gasket (F).6.
Remove the motor (B) and the acoustic insulation pipe (G)7.
Check the gasket (F) and the gasket (H) for efciency. If necessary, replace.8.
Assembly
Assemble the components in the reverse order of disassembly and note the following:9.
When installing the gasket (I) into the housing (J) turn it until the lower tooth (K) and upper teeth (L) are as shown in the •
gure.
Install the motor (B) with the power supply contacts as shown in the gure (M).•
K
A
B
D
E
B
I
I
J
H
G
D
F
C
B
M
L
L
P100427