NILFISK SC400B Service Manual

SC400

Service Manual

Advance SC400 9087310020

Nilsk SC400 9087311020

Nilsk SC400 9087318020

English

2012-11 Form No. 9099624000

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Machine General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Service Manual Purpose and Field of Application . . . . . . . . . . . . . . . . . . . . . . 4

Other Reference Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Service and Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Serial Number Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

General Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Machine Lifting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Machine Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Machine Nomenclature (know your machine) . . . . . . . . . . . . . . . . . . . . . . . . 10

Handlebar with Control Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Service and Diagnostic Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Scheduled Maintenance Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Table of Contents 2Service Manual – SC400

Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Controls and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Machine Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Recovery System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Table of Contents 3Service Manual – SC400

Scrub System, Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Solution System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

Squeegee System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Wheel System, Non-Traction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73

Service Manual – SC400

General Information

Machine General Description

The SC400 is a “man-down” industrial machine designed to wash and dry oors, in civil or industrial environments, in one pass. The machine is powered by on-board batteries. The machine is equipped with a single disc brush, a controlled solution ow dosing system and a rear squeegee with blades, which dries the oor by

vacuuming the dirty water.

Service Manual Purpose and Field of Application

The Service Manual is a technical resource intended to help service technicians when carrying out mainte-

nance and repairs on the SC400, to guarantee the best cleaning performance and a long working life for the

machine. Please read this manual carefully before performing any maintenance and repair procedure on the machine.

Other Reference Manuals

Model Product Code User Manual Spare Parts List

Nilsk SC400 9087311020

Nilsk SC400 9087318020

Advance SC400 9087310020 9099626000 9099627000

These manuals are available at:

− Local Nilsk-Advance Retailer

− Nilsk-Advance website: www.nilsk.com - www.advance-us.com

9099612000 9099613000

Service Manual – SC400

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 with the hands on the handlebar.

Service and Spare Parts

Service and repairs must be performed only by authorised personnel or Nilsk Service Centers. The authorised personnel is trained directly at the manufacturer’s premises and has original spare parts and accessories. Contact Nilsk Retailer indicated below for service or to order spare parts and accessories, specifying the ma-

chine model and serial number.

(Apply Retailer label here)

Serial Number Label

The machine model name and serial number are marked on the plate (see the example to the side). Product number and year of production are marked on the same plate. This information is useful when requiring machine spare parts. Use the following table to write down the machine

identication data.

Model: Scrubber-Dryer SC400 17 B

Prod. Nr: 9087310020

GVW: 136 kg/300 lb 29 A Charg.110-240Vac 50-60 Hz

Type E Scrubber Dryer

Conform to:

UL STD 583

Certified to:

CSA STD C22.2 N.68-92

A Nilﬁsk-Advance Brand

IPX4

3084826

Serial No: ..................

Date code: .......

LpA = 65 dB(A)

Battery 24 Vdc

“Made in Hungary” Nilfisk-Advance, Inc. Plymouth, MN, USA www.advance-us.com

Model ...............................................................................................................

Product Nr. .......................................................................................................

Serial No.

.........................................................................................................

Service Manual – SC400

General Information

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.

Note: It indicates a remark related to important or useful functions.

General Instructions

Specic warnings and cautions to inform about potential damages to people and machine are shown below.

Warning! Make sure to follow the safety precautions to avoid situations that may lead to

serious injuries.

– Before performing any cleaning, maintenance, repair or replacement procedure, turn the pro-

gram selection knob to “0” and disconnect the battery connector. – This machine must be used by properly trained operators only. – Do not wear jewels when working near electrical components. – Do not work under the lifted machine, if it is not securely xed. – Do not operate the machine near toxic, dangerous, ammable and/or explosive powders, liquids

or vapors. This machine is not suitable for collecting dangerous powders. – (For WET batteries only). Keep the battery away from sparks, ames and incandescent material.

During the normal operation explosive gases are released. – (For WET batteries only). Battery charging produces highly explosive hydrogen gas. Keep the

battery cover open during battery charging and perform this procedure in well-ventilated areas

and away from naked ames.

Service Manual – SC400

Caution! Make sure to follow the safety precautions to avoid situations that may lead to

– 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 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. – To reduce the risk of re, electric shock, or injury, do not leave the machine unattended when it

is plugged in. – Keep the battery charger cable away from heated surfaces. – Before performing any maintenance procedure, disconnect the battery charger cable from the

electrical mains to avoid any risk of re, electric shock or injuries.

– Do not smoke while charging the batteries. – 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.

– Before using the machine, close all doors and/or covers. – This machine is not intended for use by persons (including children) with reduced physical,

sensory or mental capabilities, or lack of experience and knowledge, unless they have been given

supervision or instruction concerning use of the machine by a person responsible for they safety.

Children should be supervised to ensure that they do not play with the machine. – Close attention is necessary when used near children. – Use only as shown in this Manual. Use only Nilsk’s recommended accessories. – Check the machine carefully before each use, always check that all the components have been as-

sembled before use. If the machine is not perfectly assembled it can cause damages to people and

properties. – Take all necessary precautions to prevent hair, jewels and loose clothes from being caught by the

machine moving parts. – Do not use the machine on slopes with a gradient exceeding the specications. – 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 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 use the machine as a means of transport; do not push/tow it. – Do not allow the brush 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.

serious injuries, damages to materials or equipments.

General Information

Service Manual – SC400

– Use only brushes supplied with the machine or those specied in the User Manual. Using other

brushes could reduce safety. – If parts must be replaced, require ORIGINAL spare parts from an Authorised Dealer or Retailer. – 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

(batteries, oils, etc.), which are subject to standards that require disposal in special centres (see

the User Manual). – (For WET batteries only). When lead (WET) batteries are installed on the machine, do not tilt

the machine for more than 30° from the horizontal plane to prevent the highly corrosive acid

from leaking out of the batteries. If the machine must be tilted to perform any maintenance pro-

cedure, remove the batteries.

General Information

Service Manual – SC400

Machine Lifting

Warning! Donotworkundertheliftedmachine,ifitisnotsecurelyxed.

Machine Transportation

Warning! Before transporting the machine, make sure that:

All covers are closed.

The recovery tank and the detergent tank are empty.

The batteries are disconnected.

The machine is securely fastened to the means of transport.

General Information

Service Manual – SC400

Solution tank

Machine Nomenclature (know your machine)

Recovery tank

Solution flow opening/closing valve

Solution solenoid valve

Recovery tank cover

Can holder

General Information

Handlebar with control panel

Recovery water drain plug

Recovery water drain hose bracket

Recovery water drain hose

Brush deck

Parking wheel

Electrical component box

Battery charger Solution drain hose with level check marks Battery charger warning lights

Battery charger cable Battery connector (red)

Serial number plate/technical data/conformity certification

Squeegee vacuum hose

Squeegee mounting handwheels

Squeegee blade mounting springs

Squeegee lifting/lowering pedal

Squeegee

Rear squeegee blade

Front squeegee blade

Rear support wheel, when the squeegee is lifted

Solution filter

Central wheels on fixed axle

Brush

Parking wheel positioning pin

P200042

Service Manual – SC400

Recovery tank cover (open)

Machine Nomenclature (Continues)

Recovery tank cover gasket

General Information

Battery connection diagram

FRON T OF

MACH INE

12V 12V

BACK OF MACH INE

Batteries

Lifted squeegee

Machine forward speed adjusting handwheel

PANEL PANEL

Brush

Vacuum grid with automatic shut-off float

Recovery tank compartment

Detergent removable filler hose

Solution tank filler neck

Front brush support

Vacuum system motor

Brush motor

Machine straight forward movement adjusting handwheel

Pad-holder

Pad

Brush rotation direction

P200003

Service Manual – SC400

Program selection knob / rotary switch

Handlebar with Control Panel

Program: brush - solution flow activation

Program: vacuum system activation

General Information

Program: brush - vacuum system solution flow activation

Machine switching off “0”

Handlebar

Handlebar inclination adjusting lever

Brush lever(*)

LED indicators for:

- solution quantity

- battery charge

Machine start-up enabling push-button(*)

Solution flow push-button

(*) The brush levers operate only after pushing the machine start-up enabling push-button

P200044

Service Manual – SC400

General Information

Service and Diagnostic Equipment

Besides a complete set of standard meters, the following instruments are necessary to perform fast checks, maintenance and repairs on Nilsk-Advance machines: Besides a complete set of standard meters, the following instruments are necessary to perform fast checks and repairs on Nilsk-Advance machines:

• Laptop computer charged with the current version of EzParts, Adobe Reader and (if possible) Internet

connection

• Digital Volt Meter (DVM)

• Amp clamp with possibility of making DC measurements

• Hydrometer

• Battery charge tester to check 12V batteries

• Static control wrist strap

• Dynamometric wrench set

• A copy of the User Manual and Spare Parts List of the machine to be serviced (provided with the machine or available at www.advance-us.com or other Nilsk-Advance websites).

The following equipment is also available at Nilsk-Advance Centers:

• Vacuum water lift gauge, P/N 56205281

Service Manual – SC400

Technical Data

General Information

General

Advance

SC400 17 B

Nilsk

SC400 43 B

FULL PKG

SC400 43 B

Solution tank capacity 6.0 US gal (23 liters)

Recovery tank capacity 5.5 US gal (21 liters)

Machine length 48.4 in (1,230 mm)

Machine width with squeegee 28.3 in (720 mm)

Machine width without squeegee 22.4 in (570 mm)

Min/max machine height with adjustable handlebar 28.5 - 43.9 in (725 - 1,115 mm)

Minimum turning radius 29.5 in (750 mm)

Cleaning width 17 in (430 mm)

Diameter of wheels on xed axle 9.8 in (250 mm)

Wheel pressure on the oor 290 psi (2 N/mm

)

Brush/pad diameter 17 in (430 - 432 mm)

Brush pressure with full tank and lowered squeegee 77 lb (35 kg)

Min/max solution ow 01 / 042 gpm (0.4 / 1.6 liters/min)

Sound pressure level at workstation (ISO 11201, ISO 4871, EN 60335-2-72) (LpA) 65 dB(A) ± 3 dB(A)

Machine sound pressure level (ISO 3744, ISO 4871, EN 60335-2-72) (LwA) 89 dB(A)

Vibration level at the operator’s arms (ISO 5349-1, EN 60335-2-72) < 98.4 in/s

(< 2.5 m/s2)

Nilsk

Maximum gradient when working 2%

IP protection class X4

Protection class (electric) III

Vacuum system motor power 0.4 hp (300 W)

Vacuum water lift (blocked) 47.2 inH

O (1,200 mmH2O)

Brush motor power 0.6 hp (450 W)

Brush motor speed 155 rpm

Total absorbed power 29 A (0.75 kW)

Battery compartment size 13.7x17.7x10.2 in (350x350x260 mm)

Battery voltage 24V

Standard batteries (2) -

12V - 50 Ah C5

(AGM) Spiracell

Battery charger 100-240 VAC

Work autonomy (standard batteries) 1.5 hour

Weight without batteries and with empty tanks 130 lb (59 kg)

Gross vehicle weight (GVW) 300 lb (136 kg)

Shipping weight 179 lb / 81 kg 267 lb / 121 kg 179 lb / 81 kg

Service Manual – SC400

Dimensions

General Information

725 ÷ 1115 mm (28.5 ÷ 43.9 in)

720 mm (28.3 in)1230 mm (48.4 in)

P200074

Service Manual – SC400

General Information

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 particu-

lar 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

Squeegee Cleaning

Brush Cleaning

Tank and Vacuum Grid Cleaning

Squeegee Blade Check and Replacement

Solution Filter Cleaning

Battery Charging

WET battery uid level check

Screw and nut tightening check (1)

Brush motor carbon brush check and replacement

Vacuum system motor carbon brush check and replacement

Daily, after using the

machine

Weekly

Every six

months

(1) And after the rst 8 working hours.

Yearly

Control System

Functional Description

Control System 17Service Manual – SC400

The function control is performed with the program

selection knob/rotary switch (SW1), the machine

start-up enabling push button (SW2) (which can be used simultaneously with the brush levers) and the

solution ow push-button (SW3).

The switch outputs are read by the function electron-

The LED electronic board (EBLED) has a set of 3 two-color LEDs. The set of 3 LEDs is used to indicate either battery charge level or water ow level depending on the current mode of operation:

LEDs to display the battery charge level

ic board (EB1) which consequently controls the relevant outputs: electromagnetic switch (K1) for brush

motor, relay (K2) for vacuum system motor, while the

solenoid valve (EV1) is activated directly form the electronic board. The control circuits are protected by the fuse (F3) on

LEDs to set water ow level

the function electronic board (EB1).

The LED electronic board (EBLED) is driven by the function electronic board (EB1).

Diagram of Output Activation according to the Position of the Switches (SW1), (SW2) and (SW3)

Program selection knob

/rotary switch (SW1)

settings

Machine start-up

enabling push button

(SW2) settings (with

brush levers)

Function electronic

board (EB1) + LED

electronic board

(EBLED)

Brush motor (M1) +

solenoid valve (EV1)

Vacuum system motor

(M2)

Solution ow push-

button setting (SW3)

Pressed/released Off Off Off

Released On Off On

Pressed On On On

Released On Off Off

Pressed On On Off

Pressed/released On Off On

LED display Symbols Solenoid valve ON time

(EV1)

- Always OFF

1 sec 5 sec

3 sec 3 sec

Always ON -

Solenoid valve OFF time

(EV1)

Wiring Diagram

Control System 18Service Manual – SC400

DETERGENT FLOW PUSH-BUTTON (SW3)

JA.6 - LDC-Green anode LED power supply

JA.4 - LDB-Green anode LED power supply

JA.2 – LDA-Green anode LED power supply

LED ELECTRONIC

BOARD (EBLED)

BRUSH ENABLING PUSH-BUTTON (SW2)

JA.1 - Common cathode LED power supply

JA.5 – LDC-Red anode

LED power supply

JA.3 – LDB-Yellow anode

LED power supply

ROTARY SWITCH (SW1)

FUNCTION ELECTRONIC BOARD (EB1)

BRUSH RELEASE FUSE (F4)

SIGNAL CIRCUIT FUSE (F3)

+ 24V

J3.1 - Control power supply

J3.2 - Brush function return

J3.3 - Vacuum system function return

J3.4 - Brush rotation enabling

J3.5 - Water push-button return

J3.7 - Common cathode LED power supply

J3.8 - LDA-G anode LED power supply

J3.9 - LDB-Y anode LED power supply

J3.10 - LDB-G anode LED power supply

J3.11 - LDC-R anode LED power supply

J3.12 - LDC-G anode LED power supply

B -

P200075

Component Locations

Control System 19Service Manual – SC400

• Handlebar with control panel

• Program selection knob / rotary switch (SW1)

• LED indicators for:

– solution quantity – battery charge

• Rotary switch (SW1)

• Brush levers

• Machine start-up enabling push button (SW2)

• Solution ow push-button (SW3)

• Function electronic board (EB1)

• LED electronic board (EBLED)

• Low consumption circuit fuse (F3)

• Wiring harness

• Handlebar inclination adjusting lever

Program selection knob/ rotary switch (SW1)

Solution flow push-button (SW3)

Handlebar inclination adjusting lever

Brush lever

Rotary switch (SW1)

Brush lever

Handlebar with control panel

LED indicators for:

- solution quantity

- battery charge

enabling push button (SW2)

Machine start-up

Wiring harness

Function electronic board (EB1)

LED electronic board (EBLED)

Low consumption circuit fuse (F3)

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Removal and Installation

Function Electronic Board (EB1) Disassembly/Assembly

Disassembly

Control System 20Service Manual – SC400

1. Drive the machine on a level oor. Make sure

that the machine cannot move independently.

2. Turn the machine program selection knob to “0”.

3. Disconnect the battery connector (red).

4. Disconnect the battery charger cable from the

holder (A).

5. Remove the screws (B) and remove the cover (C).

Fitting DIP-switch DIP-switch position

WET batteries

GEL-AGM batteries GEL (OFF)

Battery charger installed (standard)

Battery charger not installed NO CH (ON)

Note: The battery charger is installed on the machine as a standard component; the dip-

switch must be turned to OFF (CH position)

6. Disconnect the connectors (D) of the function electronic board (E).

7. Remove the screws (F) and remove the function electronic board (E).

Assembly

8. Assemble the components in the reverse order of

disassembly, and note the following:

• Set the DIP-switches (G) according to the

machine tting as shown below.

WET (ON)

DIP 1

CH (OFF)

DIP 2

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Control System 21Service Manual – SC400

LED Electronic Board (EBLED) Disassembly/Assembly

Disassembly

1. Drive the machine on a level oor. Make sure that the machine cannot move independently.

2. Turn the machine program selection knob to “0”.

3. Disconnect the battery connector (red).

4. On the lower side of the handlebar with the control panel, unscrew the screws (A).

5. Lower the upper side (B) of the handlebar with the control panel.

6. Disconnect the connector (C) of the LED electronic board (D). Remove the screws (E) and remove the LED electronic board (D).

7. If necessary, disconnect the connector (F) and remove the solution ow push-button (G) by disengaging the inner tabs (H).

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Control System 22Service Manual – SC400

LED Electronic Board (EBLED) Disassembly/Assembly (Continues)

8. If necessary, remove the selector assembly (N) of the machine program selection knob (I), as shown below:

• Disconnect the connectors (J)

• On the outer side, turn the knob (I) on the position (K) (vacuum system activation).

• Loosen the set screw inside the housing (L), then remove the knob (I) from the housing.

• Remove the screws (M) and, from the inside, remove the selector assembly (N) of the knob (I).

Assembly

9. Assemble the components in the reverse order of disassembly.

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