Nilfisk-Advance SC3000, BR 652, 9087260020, 9087261020, BR 752 Service Manual

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SC3000

Service Manual

Nilsk BR 652, 9087260020 - 9087261020

Nilsk BR 752, 9087262020 - 9087263020

Nilsk BR 752C, 9087264020 - 9087265020

Advance SC3000, 9087267020

English

2010-06 - Revised 2014-09

(6) Form No. 9098686000

Table of contents

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 Decal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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

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

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

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

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

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

Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

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

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

Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Scheduled Maintenance Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Table of contents 2Service Manual – SC3000

Chassis System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Frame (main parts). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Function Electronic Board Alarm Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Display of Current Values of Signicant Variables, Hour Counters and Stored Alarms . .28

Display and Change of Parameters Which can be Set by the Technician . . . . . . . . . . 30

Function Electronic Board Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Battery charger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Wiring Diagram (SPE charger) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Wiring Diagram (Delta-Q charger) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

General Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Recovery System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

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

Table of contents 3Service Manual – SC3000

Scrub System, Cylindrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

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

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Scrub System, Disc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Solution System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Squeegee System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111

Steering System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Driving Wheel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129

Table of contents 4Service Manual – SC3000

Service Manual – SC3000

General Information

Machine General Description

The SC3000 is a “Ride-on” industrial machine designed to wash and dry oors in one pass. The machine is powered by on-board batteries, models can be equipped with EcoFlex™ system (optional). The machine features variable oor pressure disc or cylindrical brushes, controlled detergent solution dosing and a rear squeegee with rubber blades that vacuums and dries the oor.

Service Manual Purpose and Field of Application

The Service Manual is a technical resource intended to help service technicians when carrying out maintenance and repairs on the SC3000, 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 BR 652 9087260020

Nilsk BR 652 - Car 9087261020

Nilsk BR 752 9087262020

Nilsk BR 752 - Car 9087263020

Nilsk BR 752C 9087264020

Nilsk BR 752C - Car 9087265020

Advance SC3000 9087267020 9098827000 9098828000

Assembly Instructions Instruction Code Machines concerned

24V 670W vacuum system motor kit 9098456000 Nilsk BR 652 - BR 752 - BR 752C

EcoFlex™ Kit 9098219000 Advance SC3000

Battery charger kit 9098215000 Nilsk BR 652 - BR 752 - BR 752C

Reverse gear buzzer kit 9098773000 Nilsk BR 652 - BR 752 - BR 752C

9098684000 9098685000

These manuals are available at:

• Local Advance or Nilsk Retailer

• Advance website: www.advance-us.com

• Nilsk website: www.nilsk.com

Service Manual – SC3000

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.

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 machine model and serial number.

(Apply Retailer label here)

Serial Number Decal

The machine model and serial number are marked on the plate (see the example to the side). Product code 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 SC3000 26D EcoFlex

Prod. Nr: 9087267020

GVW: 453 kg/999 lb

63 A

Type E Floor cleaning machine

UL STD 583

CSA STD C22.2 N.68-92

A Nilﬁsk-Advance Brand

IPX4

Charg.100-240Vac 50-60Hz

Control Nr:

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

P100544

MACHINE model .............................................................................................

PRODUCT code ..............................................................................................

MACHINE serial number .................................................................................

Service Manual – SC3000

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 maintenance, repair, cleaning or replacement procedure disconnect the battery connector and remove the ignition key.

− This machine must be used by properly trained operators only.

− Keep the batteries away from sparks, ames and incandescent material. During the normal op-

eration explosive gases are released.

− Do not wear jewelry 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 vapors: This machine is not suitable for collecting dangerous powders.

− Battery charging produces highly explosive hydrogen gas. Keep the tank assembly open during battery charging and perform this procedure in well-ventilated areas and away from naked ames.

Service Manual – SC3000

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

serious injuries, damages to materials or equipments.

− 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 batteries.

− To avoid any unauthorized use of the machine, remove the ignition key.

− Do not leave the machine unattended without being sure that it cannot move independently.

− 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.

− 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 the machine is used near children.

− Use only as shown in this Manual. Use only Nilsk’s recommended accessories.

− Take all necessary precautions to prevent hair, jewelry 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 in particularly dusty areas.

− Use the machine only where a proper lighting is provided.

− If the machine is to be used where there are other people besides the operator, it is necessary to

install the pivoting light and the reverse gear buzzer (optional).

− 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 put any can containing uids on the machine.

General Information

Service Manual – SC3000

− 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 use the machine as a means of transport.

− 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.

− To manually move the machine, the electromagnetic brake must be disengaged. After moving the

machine manually, engage the electromagnetic brake again. Do not use the machine when the electromagnetic brake handwheel is screwed down.

− When the machine is to be pushed for service reasons (missing or discharged batteries, etc.), the speed must not exceed 4 km/h.

− 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.

− When 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 procedure, remove the batteries.

− The machine must be disposed of properly, because of the presence of toxic-harmful materials (batteries, etc.), which are subject to standards that require disposal in special centres (see Scrapping chapter).

General Information

Service Manual – SC3000

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 ignition key is removed.

The machine is securely fastened to the means of transport.

General Information

Service Manual – SC3000

Machine Nomenclature (know your machine)

Squeegee hook

Seat

Battery connector

Emergency push-button

Recovery

tank cover

Dumping recovery

tank assembly

General Information

Steering wheel with control panel

Steering wheel height control lever

Ignition key

Battery charger

Solution/clean

water tank

opening/closing

valve

Squeegee

blades assembly

Solenoid valve

Solution filter

Brush/pad-holder deck

Bumper wheel

height adjustment

Heel support

Electromagnetic brake unlocking lever

Drive pedal

Front steering,

driving and

braking wheel

P100370

Service Manual – SC3000

Detergent tank

Machine Nomenclature (continued)

Vacuum grid with automatic shut-off float

Container with

Rating plate

debris collection grid

Battery charger cable

Electronic component compartment cover

Lifted tank assembly and driver's seat

Tank assembly stand

Vacuum system motor filter

Vacuum system motor

General Information

Battery connection diagram

Cylindrical brush

deck side skirt

Cylindrical

brush deck

Solution/clean

water draining valve

Squeegee balance

adjusting handwheel

Recovery water drain hose

Solution/clean water draining adapter

Solution/clean water tank filler plug with removable filler hose

Solution/clean water tank

Squeegee vacuum hose

Squeegee bumper wheels

Squeegee mounting handwheels

Squeegee support wheels

Squeegee

24V

Front

Batteries

Battery caps

P100359

Service Manual – SC3000

Battery lights

Control Panel

General Information

Anti-skid control

activation

led indicator

EcoFlex™ system

led indicator

Hour counter and

solution level display

Scrub On/Off

led indicator

Scrub On/Off

push button

Extra pressure

push button

EcoFlex™

lever

Extra pressure

led indicator

Vacuum system

push button

Vacuum system

led indicator

Reverse gear led indicator

Washing detergent flow control led indicator

Detergent flow control push button

Mute function led indicator

Mute function push button

Reverse gear lever

Horn push button

Ignition key

Solution flow increase push button

Solution flow decrease push button

Solution flow indicator

P100372

Service Manual – SC3000

General Information

Service and Diagnostic Equipment

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)

• Amperometric pliers 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

• Italsea universal programmer, P/N 9097297000

Service Manual – SC3000

General Information

Technical Data

General technical data

Description

Cleaning width 26 in (660 mm) 30 in (710 mm) 30 in (710 mm)

Squeegee width 35 in (890 mm)

Solution/clean water tank capacity 21 US gal (80 L)

Solution ow 0.26 ÷ 0.8 US gal/min. (1 ÷ 3 L/min.)

Recovery tank capacity 21 US gal (80 L)

Minimum/maximum solution ow (with and without EcoFlex™ system)

EcoFlex™ kit tank capacity 1.3 US gal (5 L)

EcoFlex™ kit detergent ow setting Ratio 1:400 ÷ 1:33 (0.25% ÷ 3%)

Rear wheel diameter 9.8 in (250 mm)

Front wheel specic pressure on the oor (*) 72 psi (0.5 N/mm2)

Rear wheel specic pressure on the oor (*) 130 psi (0.9 N/mm2)

Front steering, driving and braking wheel diameter 8.8 in (225 mm)

Vacuum system motor power 0.56 hp (420 W)

Drive system motor power 0.4 hp (300 W)

Maximum speed 3.7 mi/h (6 km/h)

Maximum gradient when working 2% (1.14°)

Sound pressure level at workstation (ISO 11201, ISO 4871, EN 60335-2-72) (LpA)

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

Vibration level at the operator's arms (ISO 5349-1, EN 60335-2-72)

Vibration level at the operator's body (ISO 2631-1, EN 60335-2-72)

Battery compartment size (length x width x height) 14.9 x 21.2 x 11.8 in (380 x 540 x 300 mm)

Battery type

Standard batteries autonomy 2.5 - 3.5 hours

Total electrical input 60 A

Machine height 46.8 in (1,190 mm)

Machine maximum length 53.5 in (1,360 mm)

Machine width without squeegee 26.4 in (670 mm) 29.4 in (748 mm) 31.9 in (810 mm)

Vacuum performance 0.0098 MPa (1,000 mmH2O)

Nilsk BR 652

Advance SC3000

4 6V batteries, 180 Ah C5 (GEL/AGM)

Nilsk BR 752 Nilsk BR 752C

0 ÷ 0.8 US gal/min. (0 ÷ 3 L/min.)

65 dB(A) ± 3 dB(A)

82 dB(A)

< 98.4 in/s2 (< 2.5 m/s2)

3.1 in/s2 (0.8 m/s2)

4 6V batteries, 180 Ah C5 (WET)

(*) Machines have been tested under the following conditions:

◦ With operator on board (165.3 lb - 75 kg) ◦ 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 front and rear wheels

Service Manual – SC3000

General Information

Technical Data (continued)

Technical data for machines with disc deck

Description

Brush/pad diameter 13 in (330 mm) 355 mm

Weight without batteries and with empty tanks 385.8 lb (175 kg) 177 kg

Maximum weight with batteries, full tanks and operator (GVW)

Hourly efciency (4 km/h) ~ 24,488 ft2 (~ 2,275 m2) ~ 2,500 m

Deck right/left offset (variable)

Brush distance from the oor (when lifted) 1.9 in (48 mm) 48 mm

Brush/pad-holder motor power 2 x 0.53 hp (2 x 400 W)

Brush/pad-holder speed 230 rpm

Brush/pad-holder pressure with extra-pressure function turned off

Brush/pad-holder pressure with extra-pressure function turned on

Technical data for machines with cylindrical brush deck

Description Nilsk BR 752C

Cylindrical brush size (diameter x length) 5.7 x 27.2 in (145 x 690 mm)

Weight without batteries and with empty tanks 396.8 lb (180 kg)

Maximum weight with batteries, full tanks and operator (GVW)

Hourly efciency (4 km/h) ~ 26910 ft2 (~ 2,500 m2)

Deck right/left offset 3.5 / 3.5 in (90 / 90 mm)

Cylindrical brush deck distance from the oor (when lifted)

Cylindrical brush motor power 2 x 0.8 hp (2 x 600 W)

Cylindrical brush speed 720 rpm

Cylindrical brush pressure 77.1 lb (35 kg)

Nilsk BR 652

Advance SC3000

983.2 lb (446 kg) 448 kg

0 ÷ 3.9 in / 1 ÷ 0 in

(0 ÷ 100 mm / 25 ÷ 0 mm)

66.1 lb (30 kg) 32 kg

105.8 lb (48 kg) 50 kg

994.3 lb (451 kg)

0.8 in (22 mm)

15 / 150 mm - 105 / 0 mm

Nilsk BR 752

Service Manual – SC3000

Dimensions

Nilsk BR 652 - Advance SC3000

General Information

1190 mm (46.85 in)

890 mm (35 in)1360 mm (53.5 in)

Nilsk BR 752

P100367

1190 mm (46.85 in)

890 mm (35 in)1360 mm (53.5 in)

P100368

Service Manual – SC3000

Dimensions (continued)

Nilsk BR 752C

General Information

1190 mm (46.85 in)

890 mm (35 in)1360 mm (53.5 in)

P100369

Service Manual – SC3000

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 tables 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

Battery charging

Squeegee cleaning

Brush/cylindrical brush cleaning

Tank, debris collection grid and vacuum grid with oat cleaning, and cover gasket check

EcoFlex™ system cleaning and draining (optional)

Squeegee blade check and replacement

Side skirt check (only for BR 752C)

Solution lter cleaning

Vacuum system motor lter cleaning

Battery (WET) uid level check

Screw and nut tightening check (1)

Check and adjustment of driving belts between motors and cylindrical brushes (only for BR 752C)

Electromagnetic brake efciency check

Brush/pad-holder motor carbon brush check or replacement

Vacuum system motor carbon brush check or replacement

Drive system motor carbon brush check or replacement

Daily, after using

the machine

Weekly

Every six

months

Yearly

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

Chassis System

Front

Frame (main parts)

1. Steering assembly plate holder

2. Tanks and driver's seat holder

3. Rear wheels on xed axle

Chassis System 20Service Manual – SC3000

P100545

Control System 21Service Manual – SC3000

Control System

Functional Description

The architecture of the electronic system controlling the electrical machine utilities consists of a main electronic board (EB1), and a display electronic board (EB2) which is connected to the dashboard (EB3) - the main user interface.

The main electronic board (EB1) manages all the utilities. It drives directly the following accessories:

− Drive system motor with electromagnetic parking brake

− Vacuum system motor

− Deck actuator

− Squeegee actuator

− Solution ow solenoid valve

− Detergent pump

− Buzzer

It drives the brush deck motors by means of the electromagnetic switch.

The display electronic board (EB2) manages all the input signals (push-buttons) and the output signals (LED)

from keyboard (EB3) to which it is connected by 2 at cables.

There is also a 3-gure display on the display electronic board (EB2), which is mainly used to display the hour

counter, the solution tank level, and for any alarms (see below). There are also 2 microswitches activated by the levers under the steering wheel.

The display electronic board (EB2) sends all the input and output signals of these components to the main electronic board (EB1) using 2-wire 2-way serial communications protocol.

The system also has an on-board battery charger which also communicates with the main electronic board (EB1) using propriety serial protocol, so the operator can see the operating state (charging phase) on the same user interface of the dashboard (EB3).

Wiring Diagram

Dashboard instrument electronic board (EB3)

Function electronic board (EB1)

Display electronic board (EB2)

Dashboard power supply +

Dashboard serial +

Dashboard serial -

Dashboard power supply -

P100546

Component Location

• Function electronic board (EB1)

• Control panel electronic board (EB2)

• Dashboard (EB3)

Control System 22Service Manual – SC3000

Function electronic

board (EB1)

Control panel elec-

tronic board (EB2)

Dashboard (EB3)

P100547

P100548

Control System 23Service Manual – SC3000

Function Electronic Board Alarm Codes

The function electronic board indicates a series of alarms in case of malfunction of one or more systems, and in case of abnormal conditions detected in the input signals. The alarms are shown on the display (except “F6”) by 2 signs following each other: “AL” and “G2”, where G2 is one of the alarm codes (see the descriptions in the following tables).

P100549 P100550

Also, the alarms are repeated (in case of display malfunction) by the diagnostic LEDs (yellow and red) on the electronic board, as described in the following tables.

General alarms

Alarm on the function electronic board - YELLOW LED + RED LED FLASHING

Alarm

Code

on the

display

No. of

ashes

on the board

G2 2 EEPROM error. EEPROM error. Function block

G3 3 General thermal

Meaning Condition Effect

+ Default setting reset.

protection.

The heatsink of the board reached a temperature up to 194 °F (90 °C).

Function block.

P100401A

Troubleshooting action

If the machine is normally working after the G2 message appearing, it could be caused by an electromagnetic spike from the environment that didn’t damage the system.

1. Check all the parameter (see page 32 - 33) settings (battery type, parameters etc.) because of they could be restored to default.

1. Check the current ow in the drive motor (it has to be 6-8amps without load and it has to remain below 20 amps during operations).

2. Check the current ow in the vacuum motor (it has to be less than 20 amps).

3. Verify the correct thermal dissipation of the board: the correct installation on the metal bracket,

obstacles to the air ow from the bottom (deck

area) to the extraction hole on the top cover of the electric box.

4. If all is ok, it could be generated by extreme working conditions like room temperature >30°C, slopes in the working path. The machine has to be maintained off in order to restore the right temperature into the board and then it could be used.

General alarms

Alarm on the function electronic board - YELLOW LED + RED LED FLASHING

Alarm

Code

on the

display

No. of

ashes

on the board

G4 4 Blown F2 fuse. Blown F2 fuse. Function block.

G5 5 Wrong KEY

G6 6 No signal from

G7 7 Undervoltage. The battery voltage

G8 8 Serial

G9 9 Battery voltage

Meaning Condition Effect

sequence.

BATTERY CHARGER

communication error with dashboard electronic board.

drop.

Voltage dip (of the order of 100ms or less) of the key input.

No signal from battery charger on the communication yellow wire to pin 11 of J1 connector

stay for more than 10 senconds lower than 18,4 Volt (for WET batteries, 19,6 Volt for GEL-AGM batteries).

No signal or decoding error in the communication between the function Electronic board (EB1) and the display board (EB2).

Battery voltage drop bigger than 3 Volt in less than 1 sencond.

Function block.

The charging battery phase is not shown

Function block.

No block.

Drive system + electromagnetic brake block.

Control System 24Service Manual – SC3000

Troubleshooting action

F2 fuse is a power safety fuse (100 amps rated) and its primary function is to avoid that a short drive

so much current to generate smoke or re into the

board. The F2 opening is normally due to a severe damage of the board.

1. Open the board plastic cover to verify the condition of the board.

2. If everythink seems ok try to substitute F2 fuse otherwise substitute the board.

3. Take care to properly tight the fuse .

1. Check any bad contact in the key switch.

2. Check for any bad contact in the wires from the key switch to the pin 5 and 6 of J3 connector on the board.

3. If necessary substitute the key switch.

1. Check the continuity of the yellow wire from the 3 way charger connector to pin 11 of J1 connector.

2. If ok, it is necessary to substitute the charger or the board.

1. Check the battery voltage without and with load. If necessary substitute the bad batteries.

2. Charge the batteries with a complete charging cycle.

1. Check the 4 wires from the 4 ways connector on the dashboard to the pin 1,2,3,4 of J3.

2. If ok substitute the dashboard.

G9 tipically shows that the red safety button under the seat (that mechanically open the ANDERSON CONNECTOR) was pressed during the machine operation. If this is not the case, check the power wirings from the batteries to the ANDERSON connector: it could be a bad contact in one of these power connections. Otherwise it could be caused by one or more batteries damaged or to be replaced.

Function Electronic Board Alarm Codes (continued)

P100549 P100551

Function electronic board alarms

Alarm on the function electronic board - RED LED FLASHING

Alarm

Code

on the

display

No. of

ashes

on the board

F2 2 BRUSH motor

F3 3 VACUUM

F4 4 DECK

F5 5 VACUUM

F6 6 PRESSURE

F7 7 VACUUM

F8 8 Function general

Meaning Condition Effect

amperometric protection.

SYSTEM amperometric protection

ACTUATOR position irregularity.

SYSTEM power section damage.

SWITCH signal fault.

SYSTEM output short circuit.

relay fault.

The voltage drop measured on the F1 fuse is higher than the value of the parameter (see page 32 - 33) VS1 (for disc deck, VS2 for cylindrical deck).

The current draw in the vacuum motor is higher than 30 Amp for more than 10 senconds.

End-of-stroke

microswitch conguration

not plausible or endof-stroke microswitch not reached within 10 senconds.

Internal board mosfet short circuit.

Pressure switch input higher than 4.0 Volt.

The inrush current draw in the vacuum motor is higher than 100 amps.

The main relays inside the board is stuck (always closed or always open).

Brush electromagnetic switch output block.

Vacuum system block

Deck actuator block.

Vacuum system block.

Water level visualization missing +

water ow and

% detergent management fault.

Vacuum system block.

Function block.

Troubleshooting action

1. Check the current ow in the brush motors (the sum of the 2 motors has to be under 50 amps on disc decks, under 70 amps on cylindric decks).

2. If the current is ok check the correct tight of the F1 fuse nuts (F1 fuse is on the bracket under the function board).

1. Check for any debris into the vacuum motor

2. Check that the vacuum motor fan is free to rotate (bearing stuck ?).

3. If necessary substitute the vacuum motor.

1. Check the deck actuator wire and its connection to the 6 way J4 connector on the board.

2. Check for any obstacle or excessive friction that don’t allow the actuator to move.

3. If necessary substitute the actuator.

1. Check any short in the vacuum motor wiring.

2. Check the vacuum motor operation (try to power it directly).

3. Substitute the board.

1. Check for the correct positioning of the pressure gauge module into the board: take care of the 2

side connectors that have to be tted in properly.

2. If the connection is ok, substitute ALL THE pressure gauge KIT.

1. Check any short in the vacuum motor wiring.

2. Check the vacuum motor operation (try to power it directly).

3. Substitute the vacuum motor.

Substitute the board.

Control System 25Service Manual – SC3000

All “general” and “function” alarms, and their relevant effects remain until reset from KEY input. In case of

simultaneous errors, the one with greater priority is shown rst (priority order is opposite to the number of ashes).

Function Electronic Board Alarm Codes (continued)

P100549 P100552

Drive system alarms

Alarm on the function electronic board - YELLOW LED FLASHING

Alarm

Code

on the

display

No. of

ashes

on the board

t2 2 Amperometric

t3 3 Electromagnetic

t4 4 Pedal input

t5 5 Drive system

t6 6 Pedal input not

t7 7 Overcurrent

t8 8 Drive system

Meaning Condition

protection intervention.

brake not present

activated by ignition.

power section damage.

admitted.

(motor D.C.).

relay fault.

Current draw in to the drive motor higher than the parameter (see page 32 - 33) “INOM“ for more than parameter (see page 32 - 33) “TMAX“ time.

Open circuit between J5.1 and J5.2

Pedal output on J3.8 higher than the parameter (see page 32 - 33) “DEADL” when the machine was switched on by the key.

Internal board mosfet short circuit.

Open circuit between J3.7 and J3.9 or pedal output on J3.8 higher than 5 Volt.

Drive motor current higher than 1.5 times the value of the parameter (see page 32 - 33) “IMAX”.

The Drive system relays inside the board is stuck (always closed or always open).

Troubleshooting action

Check the drive motor current draw: it has to be 6-8 amps without load and it has to remain under 20 amps during operation.

1. Check the continuity of the 2 wires of the electrobrake of the motorwheel up to the 2 way connector J5 on the board.

2. Check for the electrobrake impedance: has to be about 40 Ohms.

3. If necessary substitute the electrobrake.

1. Check that the pedal returns into its released position when not pressed.

2. If necessary substitute the pedal.

1. Check any short in the main motorwheel wires.

2. Try to disconnect the 2 Ø6 mm fast connectors M1 and M2 from the board, switch on the machine and press the pedal.

3. If the alarm still appears, substitute the board.

Check the wiring from the pedal and the J3 connector pins 7, 8, 9. From the battery – you have to measure:

- About 5 Volt on pin 7.

- From 0.7 to 4.5 Volt on pin 8 (it has to change moving the pedal).

- About 0 – 0.7 Volt on pin 9.

1. Check any short in the main motorwheel wires.

2. Check the impedance of the motorwheel motor: it has to be about 0.6 –

0.8 Ohms.

3. If necessary substitute the motorwheel motor.

Substitute the board.

Control System 26Service Manual – SC3000

All the drive system alarms activates to cut off the power supply to the driving wheel motor (not to the ELECTROMAGNETIC BRAKE), until reset from KEY input [except alarm t4 which is reset as soon as J3.8 voltage (drive pedal output) became less then the value of the parameter “DEADL” (see table “Function electronic

board parameters” page 32 - 33). In case of simultaneous errors, the one with greater priority is shown rst (priority order is opposite to the number of ashes).

Function Electronic Board Alarm Codes (continued)

Other alarm indications on the display

Alarm Code

on the

display

“---” Water level signal missing or not as specied. Pressure switch module output higher than 4.0 Volt.

Meaning Condition

Control System 27Service Manual – SC3000

“888”

Off Dashboard electronic board power supply missing. Voltage between J1.1 and J1.4 less than 12 Volt.

Serial communication problem between dashboard electronic board and function electronic board.

Signal missing or errors.

Black-box: Record of Alarms, Battery Management Parameters (see page 32

- 33), Partial Hour Counter

The data indicated in the following table (ALARMS, BATTERY MANAGEMENT DATA) are stored in the nonvolatile memory of the electronic board and can be recalled and displayed by the external programmer (ITALSEA UNIVERSAL PROGRAMMER, NILFISK P/N 9097297000) connect to port J9. For each stored datum (event) the value HOURS.MINUTES of the TOTAL hour counter is associated when the alarm occurred. The last 20 events are stored. When the total number of events is used up, the next events overwrite the older ones. The data are shown on the programmer display, listed by decreasing order (starting from the latest) as: DATUM - HOUR (1 per page). The UP and DOWN buttons are used to select 1 page at a time. All the stored paged can be scrolled. The “info” button shows the DATUM - EVENT DESCRIPTION for the selected line.

DATUM EVENT DESCRIPTION Condition

G2 EEPROM error See alarm code description

G3 General thermal protection See alarm code description

G4 Blown F2 fuse See alarm code description

G5 Wrong KEY sequence See alarm code description

G6 No signal from BATTERY CHARGER See alarm code description

G7 Battery undervoltage See alarm code description

G9 Battery voltage drop See alarm code description

F2 Brush motor protection intervention See alarm code description

F3 VACUUM SYSTEM overcurrent See alarm code description

F4 DECK ACTUATOR position irregularity See alarm code description

F5 VACUUM SYSTEM power section damage See alarm code description

F6 PRESSURE SWITCH signal fault See alarm code description

F7 VACUUM SYSTEM output short circuit See alarm code description

F8 Function general relay fault See alarm code description

t2 Drive system amperometric protection intervention See alarm code description

t3 Electromagnetic brake not present See alarm code description

t5 Drive system power section damage See alarm code description

t6 Pedal input not admitted See alarm code description

t7 Drive system overcurrent See alarm code description

t8 Drive system relay fault See alarm code description

GB-N Time of continuous use with discharged batteries

GC Charging cycle interrupted before completion

GD-N Charging phase duration

Serial communication error with dashboard electronic board

See alarm code description

“N” is the number of hours from the key switching ON and OFF during the battery level is under 18,4 Volt for WET, 19,6 for AGM. This event is not recorded if the above time is less than 10 minutes.

Battery charger disconnection before PHASE IV (= with red or yellow LED on)

N = Number of hours from battery charger connection to completion of PHASE II (red LED on) if < 4

Control System 28Service Manual – SC3000

Last stored event

Machine working hours

Black-box: Record of Alarms, Battery Management Parameters (see page 32

- 33), Partial Hour Counter (continued)

Example 1:

Last stored alarm: alarm G8 occurred when the machine working hours were 24h and 19m, next to last stored alarm: alarm F4 occurred when the machine working hours were 22h and 5m.

PROGRAMMER

Logged alarm-1: ALL_G8: 24h,19m

Example 2:

Charging cycle interrupted before completion when the machine working hours were 15h and 45m (last stored event).

PROGRAMMERPROGRAMMER

Logged alarm-2: ALL_F4: 22h,55m

P100399

PROGRAMMER

GC (-1) 15h,45m 21hours, 31 min

Charging cycle time when interrupted

P100400

Control System 29Service Manual – SC3000

Display of Current Values of Signicant Variables, Hour Counters and

Stored Alarms

1. Turn the ignition switch to “0”.

2. Open the electrical component compartment.

3. Connect the ITALSEA programmer, NILFISK P/N 9097297000 to the function electronic board connector J9 (A).

VAVA+

4. Turn the ignition switch to “I”.

5. Scroll with the UP and DOWN buttons the pages in the order shown in the table below.

J7A

J7B

P100401

Control System 30Service Manual – SC3000

Display of Current Values of Signicant Variables, Hour Counters and

Stored Alarms (continued)

Variable description Value meaning

Software Release Software version loaded on the electronic board

Supply Voltage Battery voltage (V)

Ref. Voltage Drive pedal input voltage (V)

Drive Motor Voltage Drive system motor output voltage (V)

Drive Motor Current Drive system motor current (A)

Brushes Current Brush deck motor current (mV) (*)

Vacuum Current Vacuum system motor current (A)

Heatsink Temp. Temperature detected on the electronic board heatsink (°C)

Hour counter: total TOTAL HOUR COUNTER (h.min)

Hour counter: drive system DRIVE SYSTEM HOUR COUNTER (h.min)

Hour counter: brushes BRUSH HOUR COUNTER (h.min)

Hour counter: vacuum VACUUM SYSTEM HOUR COUNTER (h.min)

Logged Alarm-N ALARM STORAGE (possible) (**)

(*) The value is the same as the voltage drop on the F1 fuse, which is proportional to the current but does not

have the same value in Amp.

(**) See BLACK-BOX paragraph

Control System 31Service Manual – SC3000

Display and Change of Parameters Which can be Set by the Technician

The stored value of each parameter shown in the following table could be modied by the Service Operator from its Default value to another in the range dened from “Min. value” to “Max. value”.

The default value should be ok for most of the applications, however it could be useful to change a parameter value in order to:

– Customize the machine behavior to particular customer needing (like Maximum speed in forward

(FVM), max speed in reverse (RVM), maximum and minimum pre-set working speeds (WSMIN and SWMAX if present), reaction time to the pedal pressure variation (AR and DR), time of the ECOFLEX temporary function (SPT), etc..

– Adapt the board tolerance to partcular devices that are a little bit out of their normal tolerances (ex.

voltage of the pedal output when released (DEADL), voltage when the pedal is fully pressed (DEADH).

– Adapt the board output power limits to protect the motors in particular heavy duty applications (like

Max. current in the deck motors (VS1 for disc, VS2 for cylindrical), max continous current in the drive motorwheel (INOM) etc.)

1. Turn the ignition switch to “0”.

2. Open the electrical component compartment.

3. Connect the programmer to the function electronic board connector J9 (see gure).

4. Turn the ignition switch to “I”.

5. Press the MODE button.

6. Scroll the parameters with the UP and DOWN buttons to nd the one to be changed.

7. Press the MODE button to enter the “change” mode (the parameter starts to ash).

8. Change the value with the UP and DOWN buttons.

9. Store the new set value by pressing the MODE button.

Function Electronic Board Parameters

Parameters which can be set through programming port J9

Code Description

VRID

VS1

VS2

SPT SPOT function timer (s) 5 60 300

DEADL Drive pedal bottom dead area (V) 0.0 0.9 1.5

DEADH Drive pedal top dead area (V) 0.0 2.2 2.5

FVM0 Maximum forward speed (%) 10 100 100

Vacuum system partial supply voltage (V)

Brush motor protection threshold 1 (mV)

Brush motor protection threshold 2 (mV)

Deck actuator m1 microswitch delay (ms)

Min.

values

10 16 20

30 50 90

30 60 90

0 0 10

Default

values *

Max.

values

Control System 32Service Manual – SC3000

Meaning

It is the voltage supplied to the vacuum motor when the SILENCE MODE is active: it could be reduced to reduce further the noise or increased to increase the vacuum performances.

It is the max current that is possible to supply to the disc brush deck.

PAY ATTENTION: increasing this value you will take more overheating risk on the motors.

It is the max current that is possible to supply to the cylindrical brush deck.

PAY ATTENTION: increasing this value you will take more overheating risk on the motors.

Engineering parameter to bias the deck actuator normal working position.

– Do not modify.

Time of the ECOFLEX temporary function (ECOFLEX lever / button) after that the normal settings will be restored.

Pedal output voltage when the pedal is in its released position.

Pedal output voltage when the pedal is fully pressed.

Max forward speed.

RVM0 Maximum reverse speed (%) 10 70 100

AR Maximum acceleration ramp (s) 0.5 3.0 5.0

DR Maximum deceleration ramp (s) 0.5 1.0 5.0

Maximum deceleration ramp on

BRK

INOM

reversal (s)

Electromagnetic brake activation delay (s)

Drive system rated current (A)

Up to machine SN: 3510133204430

Drive system rated current (A)

Starting m. SN: 3510133204431

0.5 0.5 5.0

0.5 1.0 5.0

10 20 30

10 25 30

Max reverse speed.

Time to reach the max forward speed from the stopped position. Increase to have a slower reactive drive behavior, decrease to have a more reactive drive behavior.

Time to reach the machine stopped from the max speed. Increase to have a slower reactive drive behavior, decrease to have a more reactive drive behavior.

PAY ATTENTION: increasing this value would make the braking spaces longer.

Time to reach the machine stopped from the max speed, when the gear is reversed. Increase to have a slower reactive drive behavior, decrease to have a more reactive drive behavior.

PAY ATTENTION: increasing this value would make the braking spaces longer.

Delay to the parking brake activation after the machine is stopped. Decrease to allow the machine parking in a slope

NOTE: that this machine is not designed to operate on slopes, so in any case advise the customer about that.

It is the max continous current that is possible to supply to the drive motorwheel.

PAY ATTENTION: increasing this value you will take more overheating risk on the motor.

Parameters which can be set through programming port J9

Code Description

IMAX Drive system maximum current (A) 10 80 100

Protection intervention time for IMAX (s)

TMAX

AMAX Maximum lateral acceleration (g/100) 1 15 100

KG Lateral acceleration control constant 1.0 1.6 2.0

WSMIN (Not used) - -

Up to machine SN: 3510133204430

Protection intervention time for IMAX (s)

Starting m. SN: 3510133204431

Min.

values

0 15 60

0 20 60

Default

values *

Max.

values

Control System 33Service Manual – SC3000

Meaning

It is the max istantaneous current that is possible to supply to the drive motorwheel.

PAY ATTENTION: increasing this value you will take more overheating risk on the motor

It is the time reaction of the drive motorwheel overloading protection: this parameter is used in combination with IMAX to have the right response time curve of the drive motor overloading protection system.

PAY ATTENTION: increasing this value you will take more overheating risk on the motor

It is the max side acceleration allowed to the machine. Over this value the drive system will cut the power to the motorwheel in order to mantain the machine stability.

PAY ATTENTION: increasing this value you will take more tipping risks

Engineering parameter related to AMAX.

- Do not modify.

(available only on other models).

WSMAX (Not used) - -

(available only on other models).

(*) The default value is stored in the electronic board by the manufacturer.

Control System 34Service Manual – SC3000

Removal and Installation

Display Electronic Board and Dashboard Electronic Board Replacement

Display Electronic Board Disassembly

1. Drive the machine on a level oor.

2. Turn the ignition key to “0” and disconnect the batteries.

3. Remove the steering wheel height control lever and disconnect the wiring harness connection (A).

4. At the workbench, remove the screws (B), the cover (C) and recover the gasket (D).

5. Disconnect the at connections (E) and (F) from the display electronic board.

6. Remove the screws (I), remove the display electronic board (G) and recover the springs (J) of the microswitches (K).

P100398

Control System 35Service Manual – SC3000

Display Electronic Board and Dashboard Electronic Board Replacement (continued)

Dashboard Electronic Board Disassembly

7. Perform steps 1 to 5 of the Display Electronic Board Disassembly.

8. Carefully lift and remove the dashboard electronic board (H) from the cover (C).

Assembly

9. Assemble the components in the reverse order of disassembly and note the following:

◦ Install the display electronic board (G) and check the proper operation of springs (J), microswitches

(K) and levers (L and M).

◦ Install the dashboard electronic board (H) by carefully attaching it to the cover and paying attention

to the routing of the at connections (E) and (F) in the cover slots (C).

P100398

Control System 36Service Manual – SC3000

DCBA

Function Electronic Board Lay-Out and Disassembly/Assembly

Disassembly

1. Drive the machine on a level oor.

2. Turn the ignition key to “0” and disconnect the batteries.

3. Lift the recovery tank assembly.

4. Remove the 6 screws and remove the electronic component compartment cover.

5. Remove the 2 mounting screws of the function electronic board assembly and carefully remove it from the housing.

6. Disconnect the following connections sequentially:

◦ (A) and (B) Power supply connection (+) and (-) . ◦ (C and D) Driving wheel connection (M1) and (M2). ◦ (E) Pressure switch module connection (J7A and J7B).

VAVA+

J7B

J7A

P100553A

Warning! Do not try to remove the pressure switch module by pulling the transparent hose:

the connection between the hose and sensor can be irretrievably damaged. Remove

the module by forcing on the PCB as shown in the gure.

OK NO

P100553B

Function Electronic Board Lay-Out and Disassembly/Assembly (continued)

M M

◦ (F) Electrical component wiring harness connection (J1). ◦ (G) Foot board wiring harness connection (J3). ◦ (H) Frame wiring harness connection (J2). ◦ (I) Vacuum system wiring harness connection (VA+ and VA-).

Control System 37Service Manual – SC3000

VAVA+

◦ (J) Recovery tank wiring harness connection (J6). ◦ (K) Electromagnetic brake wiring harness connection (J5). ◦ (L) Brush deck actuator wiring harness connection (J4).

7. Remove the function electronic board mounting screws (M) from the plate.

J7B

J7A

P100553C

Assembly

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

VAVA+

M M

J7B

P100553D

J7A

Specications

Connectors on the function electronic board

M2 M1

J7A

VAVA+

Power connections (male RADSOK terminals Ø6mm (AMPHENOL P/N N01 060 0001 1 or equivalent))

Ref. Description

Electronic board

in/out

B+ Electronic board power supply + in 24V 120A BAT+

B- Electronic board power supply - in 24V 120A B AT-

M1 Drive system motor + out 24V 100A M3+

M2 Drive system motor - out 24V 100A M3-

J7B

V ref. I max. Connected to

Control System 38Service Manual – SC3000

M2 M1

J7B

VAVA+

J7A

Vacuum system connections (2-ways male faston 6.3x0.8 – pitch 6.5mm)

Ref. Description

Electronic board

in/out

V ref. I max. Connected to

VA+ Vacuum system power supply + out 0V 30A M2+

VA- Vacuum system power supply - out 10-24V 30A M2-

Connectors (continued)

M2 M1

J7A

VAVA+

J1: MOLEX MINIFIT type, 12-ways vertical

PIN Description

Brush electromagnetic switch power supply +

Brush electromagnetic switch power supply -

Electronic board

in/out

out 24V <1A ES1

out 0V <1A ES1

3 Brush fuse voltage drop reading + in 0V <1A F1

4 Brush fuse voltage drop reading - in 0V <1A F1

5 Power supply for N/A version congurator out 0V <1A J1.6

6 N/A version congurator return in 0V <1A J1.5

7 Power supply for deck congurator out 0V <1A J1.8

8 Deck congurator return in 0V <1A J1.7

9 Consent for battery charger out 24V <1A CH.1

10 Enabling from battery charger in 24V <1A CH.2

11 Battery charger data communication slot in/out 5V <1A CH.3

12 Auxiliary power supply + (under key) out 24V <1A -

J7B

V ref. I max. Connected to

Control System 39Service Manual – SC3000

M2 M1

J7B

VAVA+

J7A

J2: MOLEX MINIFIT type, 8-ways vertical

PIN Description

Electronic board

in/out

V ref. I max. Connected to

1 Solenoid valve power supply + out 24V 1A EV1

2 Solenoid valve power supply - out 0V 1A EV1

3 Detergent pump power supply + out 24V <1A M4

4 Detergent pump power supply - out 0V <1A M4

5 Buzzer power supply + out 24V <1A BZ1.+ / PR1+

6 Buzzer power supply - out 0V <1A BZ1.cont

7 Auxiliary power supply + (under key) out 24V <1A -

8 Auxiliary power supply - out 0V <1A -

Connectors (continued)

M2 M1

J7A

VAVA+

J3: MOLEX MINIFIT type, 10-ways vertical

PIN Description

Electronic board

in/out

1 Dashboard power supply + out 24V <1A EB2.1

2 Dashboard serial + in/out 5V <1A EB2.2

3 Dashboard serial - in/out 0V <1A EB2.3

4 Dashboard power supply - out 0V <1A EB2.4

5 Power supply for key circuit out 24V <1A K1

6 Return from key in 24V <1A K1

7 Pedal potentiometer power supply + out 5V <1A RV1.F

8 Pedal potentiometer return - In 0-5V <1A RV1.E

9 Pedal potentiometer power supply - out 0V <1A RV1.D

10 -

J7B

V ref. I max. Connected to

Control System 40Service Manual – SC3000

M2 M1

J7B

VAVA+

J7A

J4: MOLEX MINIFIT type, 6-ways vertical

PIN Description

Electronic board

in/out

V ref. I max. Connected to

1 Actuator power supply - microswitch out 0V <1A M5.m0,1,2

2 Return from microswitch actuator m0 in 0V <1A M5.m0

3 Return from microswitch actuator m1 in 0V <1A M5.m1

4 Return from microswitch actuator m2 in 0V <1A M5.m2

5 Deck actuator power supply +/- out 0/24V 8A M5

6 Deck actuator power supply -/+ out 0/24V 8A M5

Connectors (continued)

M2 M1

J7A

VAVA+

J5: MOLEX MINIFIT type, 2-ways vertical

PIN Description

Electronic board

in/out

1 Driving wheel brake power supply + out 24V 1A BRK

2 Driving wheel brake power supply - out 0V 1A BRK

J7B

V ref. I max. Connected to

Control System 41Service Manual – SC3000

M2 M1

J7B

VAVA+

J7A

J6: TYCO MODU1 type, 6-ways vertical

PIN Description

Electronic board

in/out

V ref. I max. Connected to

1 Squeegee actuator power supply +/- out 0/24V 8A M6

2 Squeegee actuator power supply -/+ out 0/24V 8A M6

3 Flashing light power supply + out 24V <1A BE

Lamp / seat microswitch / oat power

supply -

out 0V <1A BE / SW1,2

5 Return from driver's seat microswitch in 0V <1A SW1

6 Return from oat in 0V <1A SW2

Connectors (continued)

M2 M1

J7B

J7A

VAVA+

J7: PRESSURE SWITCH connector, Berger type, 3+3-ways vertical ( )

A1 Pressure switch power supply + out 5V <1A Press.A1

A2 Pressure switch power supply - out 0V <1A Press.A2

A3 - - - - Press.A3

B1 - - - - Press.B1

B2 Pressure switch signal + in 0-5V <1A Press.B2

B3 Pressure switch signal - in 0V <1A Press.B3

Control System 42Service Manual – SC3000

M2 M1

J7A

VAVA+

J8: JUMPER, 2-ways vertical

M2 M1

J7A

VAVA+

J9: MOLEX MINIFIT type, 4-ways vertical

Connector for parameter programming

J7B

Electrical System 43Service Manual – SC3000

Electrical System

Functional Description

The batteries (two 12V or four 6V) are connected in series by bridge cables.

(For Nilsk scrubbers version only) One of the bridge cables has a safety fuse (F0). If the voltage at battery connector (C1) = 0V, check the continuity of the cable with the fuse (F0) (for Nilsk scrubbers version only). In case of a break in continuity, replace the cable. The battery charger (CH) is connected to the machine by two connectors (C) (power connection to the batteries) and C3 (3-way signal connection).

(Only for SPE Charger) The grey cables (terminals 1 and 2 of connector C3) are short-circuited in battery charger (CH) when it is not connected to the electrical mains. If this connection is not made, all machine

functions are disabled.

The yellow cable (terminal 3 of connector C3) is the

data cable between board (EB1) and battery charger

(CH). This connection is used to set battery charger charging curves directly on the machine dashboard and displays the state of the battery charger when charging, on the 3 battery dashboard LEDS: Red LED lit = main charging phase Yellow LED lit = equalization phase (charge comple-

tion)

Green LED lit = charging phase successfully complet-

If the optional battery charger has not been installed, the relevant bridge must be used on connector C3.

(Only for Delta-Q Charger) The terminal 2 of connector C3 is shorted to the battery + (B+) internally to the charger when it is not connected to the electrical mains. If this connection is not made, all machine

functions are disabled.

Battery charger

The SC3000 may be equipped with an optional onboard battery charger. Depending on the market area and when the machine was manufactured, the charger may be an SPE charger or a Delta-Q charger.

SPE charger Delta-Q charger

SPE DQ

Wiring Diagram (SPE charger)

24 V battery box (BAT)

Battery fuse (F0) (**)

B+

Battery

charger (CH)

B-

(*)

Function electronic board (EB1)

Consent for battery charger

Enabling from battery charger Battery charger data communication

Signal circuit fuse (F3)

Power supply for key circuit

Main electronic board fuse (F2)

Return from key

Electrical System 44Service Manual – SC3000

Ignition switch (K1)

(*) Versions without on-board battery charger (**) For Nilsk scrubbers version only

Wiring Diagram (Delta-Q charger)

24 V battery box (BAT)

Signal circuit fuse (F3)

B+

Battery

charger (CH)

B-

(*)

Enabling from battery charger

Main electronic

(***)

Power supply for key circuit

board fuse (F2)

Return from key

Function electronic board (EB1)

P100554SPE

Ignition switch (K1)

(*) Versions without on-board battery charger (***) F3 on the Function electronic board is not used. Its function is performed by the F3 fuse on the wire

P100554DQ

Component Location

• Batteries (BAT)

• Battery connections

• SPE charger (CH)

• (for Nilsk scrubbers version only) Battery fuse (F0)

• Battery connector (C1)

• Delta-Q charger (CH)

Electrical System 45Service Manual – SC3000

SPE charger (CH)

Battery connector

(C1)

Batteries (BAT)

Battery fuse (F0)

(for Nilsk scrubbers

version only)

Battery connections

P100555

Delta-Q charger (CH)

P100555B

Component Location (continues)

• Electrical panel

• Function electronic board (EB1)

Electrical System 46Service Manual – SC3000

Electrical panel

4 4

Function electronic

board (EB1)

P100556

Electrical System 47Service Manual – SC3000

Maintenance and Adjustments

Charge condition display (SPE charger only)

Set the electronic board of the machine and the on board battery charger according to the type of batteries installed (WET or GEL/AGM) as shown below:

1. Turn the ignition key to “I” and, in the very rst seconds of machine operation, detect the current setting by counting the number of ashes of the battery warning lights, as shown in the following table:

SETTING DISPLAY BATTERY WARNING LIGHT INDICATION BATTERY TYPE CHARGING CURRENT

1 4 ashes of the red warning light WET

STANDARD2 4 ashes of the green warning light GEL-AGM

3 4 ashes of the yellow warning light GEL EXIDE® type

4 2 ashes of the red warning light WET

5 2 ashes of the green warning light GEL-AGM

6 2 ashes of the yellow warning light GEL EXIDE® type

REDUCED (see note)

2. If the setting is to be changed, perform the following procedure.

3. Turn off the machine by turning the ignition key to “0”.

4. Press and hold the scrub On/Off push button and the vacuum system push button at the same time, then turn the ignition key to “I”.

5. Release the scrub On/Off push button and the vacuum system push button at least 5 seconds after starting the machine.

6. Within 3 seconds, shortly press the scrub On/Off push button to go to the next setting (1 to 6 in cyclic sequence).

Note: When performing steps 5 and 6, the settings are shown on the display too, by the code in

the table.

Note: When using batteries with a capacity lower than 160Ah@5h (in case of doubt, refer to

the battery documents), to avoid battery overheating during charging procedure, use the REDUCED charging current with setting 4, 5 or 6 shown in the table, according to the type of batteries installed.

Note: The on board battery charger must be set according to the type of batteries.

Electrical System 48Service Manual – SC3000

Delta-Q IC 650 Charge Prole Selection

Set the DELTA-Q on-board charger according to the type of batteries installed as shown below:

7. Disconnect AC input (A) from the charger, or from the wall outlet. Wait 30 seconds for the input relay to open.

8. While reconnecting AC input (B), press and hold the Select Charge Prole Button (C). Hold the button until Error Indicator (D) is on and Amber in color and Battery Charging Indicator (E) starts ashing Green.

Note: You will have to hold the button for 15-

20 seconds for this to occur.

9. Press and release the Select Charge Prole Button (C) to advance through charging proles loaded on the charger. The selected charging prole will be displayed (F) up to three times (e.g. “P-0-1-1” for Prole 11).

Note: See the BATTERY CHARGER PROFILE

SELECTION CHART in the next page

for the relevant prole. Process will time out and prole will remain unchanged if there is 15 seconds of inactivity, a prole

number is allowed to display three times, or if AC power is cycled.

10. Once desired charging prole is displayed, press and hold button (C) for 10 seconds to conrm selection and exit Prole Selection Mode.

Note: Make sure both the Error Indicator and

the Battery Charging Indicator are no longer illuminated before releasing the button.

11. Press the Select Charge Prole Button (C) to check that the desired prole is selected.

P100396

Electrical System 49Service Manual – SC3000

Delta-Q IC 650 Charge Prole Selection (continues)

Available charging proles are as follows:

BATTERY CHARGER PROFILE SELECTION CHART FOR USE WITH DELTA-Q ON-BOARD CHARGER (N-A P/N 56383856)

Battery

Manufacturer

DISCOVER EV12A-A 1 56380239 2 140 P-0-4-2

DISCOVER EV185A- A 56393912 12 234 P-0-4-3

DISCOVER EV185A-A 41023A 12 234 P-0-4-3

DISCOVER EV250A-AGM 40953A 6 260 P-0-4-3

DISCOVER EV305A-A 56112546 6 312 P-0-4-3

DISCOVER EV305A-A 56315959 6 312 P-0-4-3

DISCOVER EV305A-AGM 40964A 6 312 P-0-4-3

DISCOVER EVGT6A 56315772 6 255 P-0-4-3

DISCOVER EVGT6A 56112545 6 255 P-0-4-3

DISCOVER EVL 16A-A 56388582 6 390 P-0-4-3

EAST PENN MFG. CO. 8G27MM/T876 56206988 12 86.4 P-0-2-6

EAST PENN MFG. CO. 8GGC 2/T881 (GEL CELL) 56206987 6 180 P-0-2-6

FULL RIVER DC 250-6 56112545 6 250 P-1-5-1

FULL RIVER DC 335-6 56112546 6 335 P-1-4-1

TROJAN J-250-2992-41 56026200 6 250 P-0-0-3

TROJAN J -305G 56391391 6 285 P-0-0-7

TROJAN J185-2292-42 56206078 12 195 P-0-0-3

TROJAN L16-5592-41 56388582 6 395 NOT RECOMMENDED

TROJAN T-125LPT 56206079 6 235 P-0-0-3

TROJAN T-605LPT 56206117 6 195 P-0-0-3

US BATTERY L16 40602A 6 375 P-0-7-3

US BATTERY L16 40704A 6 375 P-0-7-3

US BATTERY L16HC 56388582 6 415 P-0-7-3

US BATTERY UB27 40070A 12 86 P-0-0-6

US BATTERY US-125 331318 6 235 P-0-1-1

US BATTERY US-125 881317 6 235 P-0-1-1

US BATTERY US-125 56206079 6 235 P-0-1-1

US BATTERY US-125 40136A 6 235 P-0-1-1

US BATTERY US-125 40136B 6 235 P-0-1-1

US BATTERY US-14 5XC 56317154 6 251 P-0-7-2

US BATTERY US1800 56206117 6 201 P-0-1-1

US BATTERY US-185 871334 12 195 P-0-1-1

US BATTERY US-185 871335 12 195 P-0-1-1

US BATTERY US-185 56206078 12 195 P-0-1-1

US BATTERY US250HC 56026200 6 275 P-0-1-1

US BATTERY US-305 891384 6 305 P-0-7-2

US BATTERY US-305 891385 6 305 P-0-7-2

US BATTERY US-305 56391391 6 305 P-0-7-2

US BATTERY US-31TMX 40605A 12 130 P-0-7-1

US BATTERY US-31TMX 40606A 12 130 P-0-7-1

Battery

Model #

N-A P/N Voltage

20 Hour

Rating

56383856 Charge Prole to use

Charge condition display

Electrical System 50Service Manual – SC3000

INDICATION

1 GREEN LED: xed - YELLOW LED: xed 22 V 22.2 V -

2 YELLOW LED: xed - RED LED: ashing 20.4 V 21.6 V Brushes OFF

3 Safety threshold 19.4 V 20.6 V Vacuum system OFF

4 Drive threshold 18.4 V 19.6 V Drive system OFF

TRANSITION THRESHOLD (VOLT)

WET GEL

CONSEQUENCE

Fuse and Electromagnetic Switch Check/Replacement

1. Drive the machine on a level oor.

2. Turn the ignition key to “0” and disconnect the batteries.

3. Remove the screws and remove the electronic component compartment cover.

4. Remove the mounting screws of the function electronic board assembly and remove it from the housing.

5. Check/replace the following fuses:

◦ (F1) 50A fuse - Brush motors. ◦ (F2) 100A MIDI fuse - Function electronic board (drive and vacuum system). ◦ (F3) 3A blade fuse - Signal circuit. ◦ (F4) 15A blade fuse - Deck and squeegee lifting actuator.

6. Further move the function electronic board assembly to remove the electromagnetic switch (ES1).

7. Place the function electronic board assembly in its housing, tighten the mounting screws and install the

electronic component compartment cover.

ES1

P100396

Troubleshooting

See the other chapters related to the use of the electrical system.

Trouble Possible Causes Remedy

The machine is not working The batteries (BAT) are discharged or its connections are

not efcient

The batteries (BAT) are broken Check the battery no-load voltage

The battery charger (CH) is broken Replace

The fuses (F0)(*) (F2, F3) are open Replace

The wiring harness is cut or pressed or short circuited Repair

The ignition key (K1) does not work Replace

(*) For Nilsk scrubbers version only

Note: A damage to the battery charger or its connections can prevent the machine from

operating properly.

Charge the batteries or clean the connections

Electrical System 51Service Manual – SC3000

General Wiring Diagram

Battery connector (C1+)

Electrical System 52Service Manual – SC3000

Electromagnetic brake (BRK)

24 V battery box (BAT)

Battery fuse (F0)(***)

Squeegee actuator motor (M6)

Flashing light (BE)

Driver's seat microswitch (SW1)

Display electronic board (EB2)

Dashboard instrument electronic board (EB3)

Battery charger main connector (C2)

Ignition switch (K1)

Drive system motor (M3)

Drive pedal potentiometer (RV1)

Main electronic board fuse (F2)

Signal circuit fuse (F3)

Actuator fuse (F4)

Detergent/clean water level pressure switch (PR1)

Vacuum system motor (M2)

m0 m1 m2

(***)

(**)

Brush deck connector (C4+)

Brush motor (M1.1,2)

Brush deck connector (C4-)

Brush deck actuator motor (M5)

Brush motor electromagnetic switch (ES1)

Brush deck fuse (F1)

Solenoid valve (EV1)

(*)

Battery charger sub-connector (C3)

Battery charger (CH)

Battery charger main connector (C2)

Battery connector (C1-)

(*) Versions without on-board battery charger (**) Only for versions with disc brush deck (***) For Nilsk scrubbers version only

Function electronic board (EB1)

Detergent pump (M4)

Reverse gear warning buzzer/ horn (BZ1)

P100557

Electrical System 53Service Manual – SC3000

Specications

Battery compartment size (length x width x height) 14.9 x 21.2 x 11.8 in (380 x 540 x 300 mm)

Battery type

Standard batteries autonomy (capacity) 2.5 - 3.5 hours

Model 24V 25A

Input voltage 85Vac÷264Vac, 50Hz÷60Hz

Battery charger

Total machine electrical input 60 A

Charging procedure by microprocessor

Efciency > 85%

Environmental protection class IP66

Maximum input current 15Arms

4 6 V batteries, 180 Ah C5 (WET)

4 6 V batteries, 180 Ah C5 (GEL/AGM)

Recovery System 54Service Manual – SC3000

Vacuum system motor (M2)

Recovery System

Functional Description

The water recovery system removes the dirty water from the oor and pipes it to a recovery tank. When the machine is running, the dirty water on the oor is collected by the squeegee blades and collected through the slots in the same, piped through the vacuum hose and into the tank by the airow created by Vacuum system motor (M2). The dirty water is piped into the recovery tank, while the airow continues to the vacuum fan. A tank with a screen collects the largest debris going through the recovery tank hose. The automatic oat in the vacuum screen stops Vacuum system motor (M2) from collecting any liquids. When the automatic oat closes and shuts down the vacuum system, the vacuum system motor noise will increase and the oor will not be dried.

When the recovery tank is full it can be emptied through the drain hose.

Wiring Diagram

Function electric board (EB1)

P100558

Component Location

• Recovery tank

• Recovery tank cover

• Gasket cover

• Container with debris collection grid

• Float ball and cage

• Vacuum system motor (M2)

Recovery System 55Service Manual – SC3000

• Squeegee vacuum hose

• Recovery water drain hose

• Vacuum system wiring harness connection

• Function electronic board (EB1)

Recovery tank cover

Gasket cover

Container with

debris collection grid

Vacuum system

motor (M2)

Float ball and cage

Recovery tank

P100559

Squeegee vacuum

hose

Vacuum system

wiring harness

connection

Recovery water drain

hose

Function electronic board (EB1)

P100560b

P100560

Recovery System 56Service Manual – SC3000

Maintenance and Adjustments

Recovery Tank Cleaning

1. Drive the machine to the appointed disposal area.

2. Turn the ignition key to “0”.

3. Open the recovery tank cover.

4. Clean and wash the cover and the recovery tank with clean water.

5. Empty the recovery tank with the drain hose.

6. Clean the vacuum grid, release the fasteners (A), open the grid (B) and recover the oat (C) then clean carefully and reinstall.

7. Clean the container with debris collection grid (G), remove the container, remove the cover (H), then clean carefully and reinstall the vacuum hose.

8. Check the tank cover gasket (D) for integrity.

Note: The gasket (D) creates vacuum in the tank that is necessary for vacuuming the recovery

water.

9. If necessary replace the gasket (D) by removing it from its housing (E). When assembling the new gasket, install the joint (F) in the lower area, as shown in the gure.

10. Check that the seating surface (I) of the gasket (D) is integral, clean and adequate for the gasket itself.

11. Close the recovery tank cover.

P100561

Troubleshooting

Trouble Possible Causes Remedy

Recovery System 57Service Manual – SC3000

The vacuum system motor does not turn onThe wiring harness between function electronic board

Dirty water vacuuming is insufcient or

there is no vacuuming

(EB1) and vacuum system motor (M2) is damaged

The vacuum system motor carbon brushes are worn Replace

The dashboard instrument electronic board (EB3) is faulty

The vacuum system motor is faulty Check the electrical input

The vacuum grid with automatic shut-off oat is activated

because the recovery tank is full

The lter is dirty Clean

The vacuum grid with automatic shut-off oat is dirty Clean

The tank cover is not correctly positioned Adjust

The tank cover gasket is not efcient Clean or replace

The vacuum system motor lter is dirty Clean

The vacuum gaskets are damaged or do not match perfectly

Repair

Replace

Drain the recovery tank

Repair or replace

Recovery System 58Service Manual – SC3000

Removal and Installation

Vacuum system motor electrical input check

Warning! Thisproceduremustbeperformedbyqualiedpersonnelonly.

1. Install an Amp clamp (A) on one cable (B) of the batteries.

2. Turn the ignition key to “I”.

3. Turn on the vacuum system by pressing the vacuum system push button and check that the motor electrical input is 16 - 19 A at 24 V.

4. Turn off the vacuum system motor by pressing the vacuum system push button .

5. Remove the Amp clamp (A).

6. If the amperage exceeds the specications, check the motor carbon brushes (see the procedure in the relevant paragraph).

7. If necessary, remove the vacuum system motor (see the procedure in the relevant paragraph), and check the condition of its moving parts.

8. If the above-mentioned procedures do not restore normal current draw, the motor must be replaced (see the procedure in the relevant paragraph).

S301553

Recovery System 59Service Manual – SC3000

Vacuum System Motor Carbon Brush Check/Replacement

1. Remove the vacuum system motor (see the procedure in the following paragraph).

2. At the workbench, remove the screws and the cover (A) from the vacuum system motor (B).

3. Remove the screws (C).

4. Disconnect the electrical connections (D).

5. Remove the carbon brushes (E).

6. Check the carbon brushes (E) for wear. Replace the carbon brushes when:

◦ The contact with the motor armature is insufcient ◦ The carbon brushes are worn, ◦ The carbon brush contact surface is not integral, ◦ The carbon brush when the stroke residual is less than 0.12 in (3 mm), ◦ The thrust spring is broken, etc.

7. If necessary, replace the carbon brushes. Replace the carbon brushes as an assembly.

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

S301555

Recovery System 60Service Manual – SC3000

Vacuum System Motor Disassembly/Assembly

Disassembly

1. If there is recovery water in the tank, drain it.

2. Turn the ignition key to “0” and disconnect the batteries.

3. Lift the recovery tank assembly.

4. Remove the screws (A) and recover the washers.

5. Remove the motor cover (B).

6. Remove the lter (C) and the gasket (D).

7. Remove the motor (E) or (L), the sound-deadening pipe (F) and the sound-deadening panel (G).

8. Disconnect the connector (H) of the motor (E).

9. Check the efciency of the gasket (I) and, if necessary, replace it.

Assembly

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

D C

P100562

Specications

Recovery System 61Service Manual – SC3000

Description

Recovery tank capacity 21 US gal (80 L)

Vacuum system motor technical data

Vacuum performance 0.0098 MPa (1,000 mmH2O) (Blocked)

Advance SC3000

Nilsk BR 652

0.0146 MPa (1,448 mmH2O) (Blocked)

Nilsk BR 752

0.56 hp (420 W)

20.8A VDC 24V

14900 rpm

26.1 l/sec

Nilsk BR 752C

Scrub System, Cylindrical 62Service Manual – SC3000

Scrub System, Cylindrical

Functional Description

The cylindrical brush system can be started by the operator. The cylindrical brushes turn in opposite directions towards the centre of the deck.

The rotating brush system cleans the surface of the oor. The deck, where brushes suitable for cleaning the particular type of oor are installed, is the main part of the brush system.

The brush deck is mounted on a “magic deck” pantograph system with an electrical actuator. The “magic deck” system also traverses the deck to the side if it collides with an obstacle. The electrical actuator, with limit microswitches, lifts and lowers the deck. The operating and washing pressure depends on the weight of the deck. The cylindrical brush system does not have extra pressure function. The brushes rotate when the brush motors are activated by the function electronic board when the pedal is pressed. The cylindrical brushes are driven by a belt and pulley transmission system.

The brush system uses the solution to wash the oor.

The 2 side skirts direct the washing water towards the rear squeegee. There is also a removable box on the deck where the debris cleaned by the brushes collects.

In case of brush motor overload, a safety system stops the brushes after about one minute of continuous overload. The overload is shown by the three battery warning leds ashing simultaneously. The overload is detected monitoring the sum of current ow on the motors. The current is measured by a voltage drop verication across the brush system fuse (F1). If the voltage drop become over the value stored in the “VS2” parameter (default = 70 mV), the 3 battery leds start ashing simultaneously and if the overload persist, after a variable delay depending on the overload amount, the motors will stop. To start scrubbing again after a brush stop due to an overload, stop the machine by turning the ignition key to “0”. Turn on the machine by turning the ignition key to “I”. In summary, the brush motor running needs the following conditions/inputs:

• Seat microswitch closed

• Brushes function enabled

• Drive pedal pressed

• Battery level not in red light blinking condition.

Wiring Diagram

Power supply (B+)

Brush deck

Shown in retracted position

Function electronic

Scrub System, Cylindrical 63Service Manual – SC3000

Function electronic board (EB1)

Negative ref.

Positive ref.

Actuator Wiring Diagram

actuator motor (M5)

J1.2

J1.1

Shunt +

Shunt -

board (EB1)

J4.5

Brush motors (M1.1 - M1.2)

Brush motor electromagnetic switch (ES1)

Brush deck fuse (F1)

Power supply (B-)

P100563

B+

J4.6

B-

B+

Retracted

Work

Extra pressure

J4.2

J4.3

J4.4

J4.1

B-

Voltage reference

Retracted Work Extrapressure

Actuator position

V1 5V 0V 0V

V2 0V 5V 0V

V3 0V 0V 5V

B-

P100564

Component Location

Scrub System, Cylindrical 64Service Manual – SC3000

• Cylindrical brush deck

• Debris container

• Side skirts

• Crankcase belt protection

• Front deck protection

• Motor pulley

Cylindrical brush

Debris container

Side skirts

deck

• Roller belt tensioner

• Driving belt

• Brush pulley

• Support brush

Crankcase belt protection

Front deck protec-

tion

Motor pulley

Roller belt tensioner

Driving belt

Brush pulley

P100565

Support brush

P100566

Component Location (continued)

Scrub System, Cylindrical 65Service Manual – SC3000

• Brush deck lifting/lowering actuator

• Brush motor electromagnetic switch (ES1)

• Brush motor (M1.1 - M1.2)

• Function electronic board (EB1)

Brush deck lifting/

lowering actuator

Brush motor elec-

tromagnetic switch

(ES1)

• Brush deck fuse (F1)

• Actuator system wiring harness connection

Brush motor (M1.1 -

M1.2)

P100567

Function electronic

board (EB1)

Brush deck fuse (F1)

(into fuse holder)

Actuator system wiring harness connection

P100568

Scrub System, Cylindrical 66Service Manual – SC3000

Maintenance and Adjustments

Cylindrical brush installation/removal

1. Insert the ignition key and turn it to “I”.

Warning! Before pressing the scrub On/Off push button , always check that, between the

deck and the machine there is no foreign material which may prevent the deck from lifting.

2. Lift the deck by pressing the scrub On/Off push button .

3. Turn the ignition key to “0” and remove it.

4. On both sides of the machine, loosen the knobs (A) and remove the side skirt assemblies (B).

5. Unscrew the knobs (C) and remove the lids (D) by pushing the knobs downwards.

6. Install the cylindrical brushes (E), or remove them to install new ones.

7. The cylindrical brushes must be installed on either sides.

8. Install the lids (D) and fasten them with the knobs (C).

9. Install the side skirt assemblies (B), fasten them with the knobs (A).

Warning! If the machine is not perfectly assembled it can cause damages to people and

properties. Always check that all components are assembled before starting the machine. Carefully inspect the machine before using it.

Front

P100363

Side skirt check and replacement

Scrub System, Cylindrical 67Service Manual – SC3000

Check

1. Drive the machine on a level oor.

2. Turn the ignition key to “0”.

3. On both sides of the machine, loosen the knobs (A) and remove the side skirt assemblies (B).

4. Wash and clean the skirt.

5. Check that the skirt lower edge (C):

◦ Lays down on the same level, along all its

length; ◦ Is integral and free from cuts and lacerations; ◦ Has the inner corner (D) that is not worn;

6. Otherwise overturn or replace the skirts according to the following procedure.

Overturning or replacement

7. Remove the wing nuts (E), then remove the retaining strip (F).

8. Remove the skirt blade (G) and, if possible,

overturn the blade to replace the lower inner

corner (D) with the opposite one. If the other corner is worn too, replace the blade.

Assembly and height adjustment

9. Assemble the blades (G) and skirt assembly (B) in the reverse order of disassembly.

10. Start the machine and lower the cylindrical brush deck, then check that the side skirt blades (G):

◦ Slightly touch the oor; ◦ Collect the solution.

11. If necessary stop the machine and adjust the skirt height by loosening the knob (A) and turning the knobs (H).

12. After adjusting, tighten the knob (A).

P100369

Scrub System, Cylindrical 68Service Manual – SC3000

Troubleshooting

Open circuit

• The Brush deck fuse (F1) determines an open in the supply circuit of the brush deck motors. This system allows to prevents the wiring 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.

Trouble Possible Causes Remedy

All brushes do not turn The brush motor electromagnetic switch wiring harness

is damaged

The function electronic board (EB1) is faulty Replace

The wiring harness between function electronic board (EB1) and brush motor electromagnetic switch (ES1) is damaged

The brush motor electromagnetic switch (ES1) is damaged

The brush motor fuse (F1) is open Replace

One brush does not rotate The motor carbon brushes are worn Replace

Bulky debris or cords around the brushes or between the

brushes and its ange

The motor is faulty Repair or replace

The wiring harness is damaged Repair

The brush cannot be lifted/lowered See the Electrical System chapter,

The deck lifting/lowering actuator (M5) end-of-stroke microswitches are broken

The deck lifting/lowering actuator (M5) is broken Replace

Open circuit in the actuator wiring harness Check the connections according

Repair

Replace

Remove and clean the brushes

function electronic board error codes

Replace the actuator

to the instructions in the Electrical System chapter, Troubleshooting paragraph

The machine does not collect the solution completely

The actuator fuse (F4) is open Replace

The function electronic board (EB1) is damaged Replace

The side skirts are not properly adjusted Adjust/replace

Removal and Installation

Removing and Installing the Brush Deck

Scrub System, Cylindrical 69Service Manual – SC3000

Disassembly

1. Drive the machine on a level oor or on a

hoisting system to facilitate the disassembly procedures.

2. Remove the side skirt assemblies, the cylindrical

brushes and debris container.

3. Turn the ignition key to “I”, lower the cylindrical

brush deck by pressing the scrub On/Off push

button and then turn the ignition key to

“0”.

4. Disconnect the red connector (A).

5. Disconnect the solution hose union (B).

6. Remove the safety pins (C).

7. Unscrew the mounting nut (D) and recover the

washer.

8. Turn the ignition key to “I”, lift the deck holder (E) by pressing the scrub On/Off push button

and then turn the ignition key to “0”.

9. Turn the steering wheel all the way to the left to remove the cylindrical brush deck.

10. With a second operator who helps to keep the deck holder (E) further lifted, remove the cylindrical brush deck (F).

Assembly

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

P100467

Scrub System, Cylindrical 70Service Manual – SC3000

Brush motor electrical input check

Warning! Thisproceduremustbeperformedbyqualiedpersonnelonly.

1. Drive the machine on a level oor.

2. Remove the brushes.

3. Place two wooden shims (A) under the side areas of the cylindrical brush deck (C) as shown in the gure. Wooden shim thickness must be 25 mm.

4. Use a jumper wire to disable the driver's seat microswitch.

5. Disconnect the driving wheel connector to disable the drive system.

6. Turn the ignition key to “I” and lower the cylindrical brush deck with the scrub On/Off push button

7. Install an amp clamp (A) on one cable (B) of the brush motor.

8. Turn on the brushes by pressing the drive pedal, then check that the electrical input of the right (G) or left motor (I) is 4 to 6 A at 24V.

9. Turn off the brushes by releasing the drive pedal and lift the brush deck by pressing the scrub On/Off

push button .

10. Turn the ignition key to “0”.

11. Remove the amp clamp (A).

12. If the electrical input is higher, perform the following procedures to detect and correct the abnormal input:

Note: If the electrical input is higher than the maximum allowed value, the 3 battery warning

lights ash simultaneously.

13. Check the tightening of F1 fuse screws.

14. Check if there is dust or dirt (ropes, cables, etc.) on the brush hubs.

15. Check the motor carbon brushes (see the procedure in the following paragraph).

16. Remove the motors (see the procedure in “Brush motor Disassembly/Assembly” paragraph), and check

the condition of all components. If the above-mentioned procedures do not lead to a correct electrical

input, it is necessary to replace the motors.

Brush Motor Electrical Input Check (continued)

Reset

17. Connect the driving wheel connector.

18. Remove the jumper wire and enable the driver's seat microswitch.

19. Remove the wooden shims and install the brushes.

Scrub System, Cylindrical 71Service Manual – SC3000

P100469

Scrub System, Cylindrical 72Service Manual – SC3000

Brush Motor Carbon Brush Check/Replacement

Check

1. Remove the brush motor.

2. At the workbench, remove dust and debris from the motor, especially in the area of the protection clamp

(A).

3. Remove the protection clamp (A).

4. For each carbon brush, move the protection (B) and remove the screws (C).

5. Remove the carbon brushes (D).

6. Check the carbon brushes (D) for wear. Replace the carbon brushes when:

◦ The contact with the motor armature is insufcient, ◦ The carbon brushes are worn, ◦ The carbon brush contact surface is not integral, ◦ The carbon brushes when the stroke residual is less than 0.12 in (3 mm), ◦ The thrust spring is broken, etc.

7. Replace the carbon brushes as an assembly.

Reset

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

P100570

Scrub System, Cylindrical 73Service Manual – SC3000

Brush Motor Disassembly/Assembly

Disassembly

1. Remove the cylindrical brush deck (see the procedure in “Cylindrical Brush Deck Disassembly/ Assembly” paragraph).

2. On the machine side where the brush motor has to be removed, unscrew the knobs and remove the side skirt assembly.

3. Remove the screws (A) and remove the case (B).

P100379

Scrub System, Cylindrical 74Service Manual – SC3000

Brush Motor Disassembly/Assembly (continued)

5. Remove the guard (C).

6. Loosen the nut (D) and move the pulley (E) to loosen the belt (F).

7. Remove the belt (F).

8. Remove the screws (G).

9. Remove the motor (H).

Assembly

10. Assemble the components in the reverse order of disassembly, and note the following:

◦ The electrical connections (L) of the motor (H) must be turned to the rear side of the cylindrical brush

deck.

◦ The connection (J) of the carbon brush protection clamps (I) must be positioned as shown in the g-

ure.

◦ Install the belt (F) and tension it properly (see the procedure in the relevant paragraph).

Note: For further information on deck components see the Parts List.

P100379

Scrub System, Cylindrical 75Service Manual – SC3000

Check/replacement/adjustment of driving belts between motors and cylindrical brushes

Check

1. Drive the machine on a level oor.

2. Lower the brush deck by pressing the scrub On/Off push button .

3. Turn the ignition key to “0” and disconnect the batteries.

4. On both sides of the machine, unscrew the knobs and remove the side skirt assemblies.

5. Remove the screws (A) and remove the covers (B).

6. Visually inspect the driving belt (C) for integrity, cuts, tears or cracks and, if necessary, replace it

according to the following procedure.

7. Check the driving belt tension (C) according to the following procedure.

P100380

Scrub System, Cylindrical 76Service Manual – SC3000

Check/replacement/adjustment of driving belts between motors and cylindrical brushes (continued)

Replacement

8. If the belt (C) is to be replaced, remove the guard (D), loosen the nut (E) and move the pulley (F) to

loosen the belt.

9. Remove or replace the driving belt.

10. Stretch the driving belt (according to the following procedure).

Belt tensioning

11. Check the tension of the driving belt (C) between motor and brush. The tension is correct when the driving belt bends for 5 mm when pressing the driving belt in its centre with a force of 10 kg (G).

12. If necessary, stretch the driving belt according to the following procedure:

13. Remove the cover (D), loosen the nut (E) and adjust the position of the pulley (F) as necessary. When tensioning procedure has been performed, tighten the nut (E).

14. Repeat step 11.

Reset

15. Install the guard (D) and perform steps 3, 4 and 5 in the reverse order.

5 mm

P100380

Scrub System, Cylindrical 77Service Manual – SC3000

Brush Deck Lifting/Lowering Actuator Disassembly/Assembly

Disassembly

1. Lower the brush deck.

2. Remove the cylindrical brush deck (see the procedure in “Cylindrical Brush Deck Disassembly/

Assembly” paragraph).

3. Turn the ignition key to “0” and disconnect the batteries.

4. Disconnect the actuator connector (see the function electronic board).

5. Remove the screw (A) and recover nuts, bushings and washers.

6. Remove the screw (B) and recover the washer.

7. Remove the actuator (C).

Assembly

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

P100382

Specications

Description

Scrub System, Cylindrical 78Service Manual – SC3000

Nilsk BR 752C

Cleaning width

Cylindrical brush size (diameter x length)

Deck right/left offset

Cylindrical brush deck distance from the oor (when lifted)

Brush electromagnetic switch

Cylindrical brush motor technical data

Maximum load

Maximum speed

Actuator technical data

Voltage

Protection class

Cylindrical brush speed

Cylindrical brush pressure

28 in (710 mm)

5.7 x 27.2 in (145 x 690 mm)

3.5 / 3.5 in (90 / 90 mm)

0.8 in (22 mm)

24V 70A

2 x 0.8 hp (2 x 600 W 24V)

1800 rpm

700 N

16 mm/s

24V

IP 65

720 rpm

77.1 lb (35 kg)

Scrub System, Disc 79Service Manual – SC3000

Scrub System, Disc

Functional Description

The disc brush system can be started by the operator. The disc brushes turn in opposite directions towards the centre of the header.

The rotating brush system cleans the surface of the oor. The deck, where brushes suitable for cleaning the particular type of oor are installed, is the main part of the brush system. The brush deck is mounted on a “magic deck” pantograph system with an electrical actuator and gas spring. The “magic deck” system lets the brush deck traverse sideways and the steering system turn thanks to a rack. The “magic deck” system also traverses the deck to the side if it collides with an obstacle. The electrical actuator, with limit microswitches, lifts and lowers the deck. The operating and washing pressure depends on the weight of the deck. The actuator and gas spring provide extra pressure function. The extra pressure function can be selected with the specic button on the dashboard. The brushes rotate when the brush motors are activated by the function electronic board when the pedal is

pressed.

The brush system uses the solution to wash the oor. In case of brush motor overload, a safety system stops the brushes after about one minute of continuous overload. The overload is shown by the three battery warning leds ashing simultaneously. The overload is detected monitoring the sum of current ow on the motors. The current is measured by a voltage drop verication across the brush system fuse (F1). If the voltage drop become over the value stored in the “VS2” parameter (default = 70 mV), the 3 battery leds start ashing simultaneously and if the overload persist, after a variable delay depending on the overload amount, the motors will stop. If the overload takes place when the extra pressure function is on, the system automatically turns the extra pressure function off. If the overload persists, the brushes stop. To start scrubbing again after a brush/pad-holder stop due to overload, stop the machine by turning the ignition key to “0”. Turn on the machine by turning the ignition key to “I”. In summary, the brush motor running needs the following conditions/inputs:

• Seat microswitch closed

• Brushes function enabled

• Drive pedal pressed

• Battery level not in red light blinking condition.

Wiring Diagram

Power supply (B+)

Brush deck

Shown in retracted position

Function electronic

Scrub System, Disc 80Service Manual – SC3000

Function electronic board (EB1)

Negative ref.

Positive ref.

Actuator Wiring Diagram

actuator motor (M5)

J1.2

J1.1

Shunt +

Shunt -

board (EB1)

J4.5

Brush motors (M1.1 - M1.2)

Brush motor electromagnetic switch (ES1)

Brush deck fuse (F1)

Power supply (B-)

P100563

B+

J4.6

B-

B+

Retracted

Work

Extra pressure

J4.2

J4.3

J4.4

J4.1

B-

Voltage reference

Retracted Work Extrapressure

Actuator position

V1 5V 0V 0V

V2 0V 5V 0V

V3 0V 0V 5V

B-

P100564

Component Location

• Disc brush deck

• Brush gearmotor (M1, M2)

• Drive hub

• “Magic deck” system

• Brush deck lifting/lowering actuator (M5)

Scrub System, Disc 81Service Manual – SC3000

• Gas spring for extra pressure

• Brush electromagnetic switch (ES1)

Brush gearmotor

(M1, M2)

Disc brush deck

Brush deck lifting/

lowering actuator

(M5)

Magic deck” system

Drive hub

P100571

P100572

Brush electromagnetic switch (ES1)

Gas spring for extra

pressure

Component Location (continued)

• Brush deck fuse (F1)

• Actuator system wiring harness connection

• Function electronic board (EB1)

Function electronic

board (EB1)

Brush deck fuse (F1)

(into fuse holder)

Scrub System, Disc 82Service Manual – SC3000

Actuator system wiring harness connection

P100568

Scrub System, Disc 83Service Manual – SC3000

Maintenance and Adjustments

Brush/pad-holder installation/removal

1. Insert the ignition key and turn it to “I”.

Warning! Before pressing the scrub On/Off push button , always check that, between the

deck and the machine there is no foreign material which may prevent the deck from lifting.

2. Lift the deck by pressing the scrub On/Off push button .

3. Turn the ignition key to “0”.

4. Install the brushes (A) or pad-holders (B or C) in the drive hub (D) under the deck, then turn them in the opposite direction to their rotation direction, until they reach the end of stroke (E).

5. To remove the brushes/pad-holders perform steps 1 to 3, then manually release the brush/pad-holder from the hub by turning it abruptly in its normal rotation direction (F).

Warning! If the machine is not perfectly assembled it can cause damages to people and

properties. Always check that all components are assembled before starting the machine. Carefully inspect the machine before using it.

Front

P100362

Scrub System, Disc 84Service Manual – SC3000

Troubleshooting

Open circuit

• The fuse (F1) determines an open in the supply circuit of the brush deck motors. 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.

Trouble Possible Causes Remedy

All brushes do not turn The brush motor electromagnetic switch wiring harness

is damaged

The function electronic board (EB1) is faulty Replace

The wiring harness between function electronic board (EB1) and brush motor electromagnetic switch (ES1) is damaged

The brush motor electromagnetic switch (ES1) is damaged

The brush motor fuse (F1) is open Replace

One brush does not rotate The motor carbon brushes are worn (replace). Replace

Bulky debris or cords around the brushes or between the

brushes and its ange

The motor is faulty Repair or replace

The wiring harness is damaged Repair

The brush cannot be lifted/lowered See the Electrical System chapter,

The deck lifting/lowering actuator (M5) end-of-stroke microswitches are broken

The deck lifting/lowering actuator (M5) is broken Replace

Open circuit in the actuator wiring harness Check the connections according

Repair

Replace

Remove and clean the brushes

function electronic board error codes

Replace the actuator

to the instructions in the Electrical System chapter, Troubleshooting paragraph

The actuator fuse (F4) is open Replace

The function electronic board (EB1) is damaged Replace

Removal and Installation

Removing and Installing the Brush Deck

Scrub System, Disc 85Service Manual – SC3000

Disassembly

1. Drive the machine on a level oor or on a

hoisting system to facilitate the disassembly procedures.

2. Remove the brushes/pad-holder.

3. Turn the ignition key to “I”.

4. Lower the brush/pad-holder deck by pressing the

scrub On/Off push button .

5. Turn the ignition key to “0”.

6. Disconnect the red connector (A).

7. Disconnect the solution hose union (B).

8. Remove the screw (C) and recover the nut.

9. Remove the safety pins (D).

10. Remove the mounting nut (E) and recover the washer, then remove the brush/pad-holder deck (F).

Assembly

11. Assemble the components in the reverse order of

disassembly.

P100574

Scrub System, Disc 86Service Manual – SC3000

Brush motor electrical input check

Warning! Thisproceduremustbeperformedbyqualiedpersonnelonly.

1. Drive the machine on a level oor.

2. Remove the brushes.

3. Place two wooden shims (A) under the side areas of the deck (C) as shown in the gure. Wooden shim thickness must be 25 mm.

Warning! Keep the wooden shims at an appropriate distance from the brush hubs.

4. Use a jumper wire to disable the driver's seat microswitch.

5. Disconnect the driving wheel connector to disable the drive system.

6. Turn the ignition key to “I” and lower the brush/pad-holder deck with the scrub On/Off push button

7. Install an amp clamp (A) on one cable (B) of the brush motor.

8. Turn on the brushes by pressing the drive pedal, then check that the electrical input of the right (G) or left motor (I) is 3 to 4 A at 24V.

9. Turn off the brushes by releasing the drive pedal and lift the brush/pad-holder deck by pressing the

scrub On/Off push button .

10. Turn the ignition key to “0”.

11. Remove the amp clamp (A).

12. If the electrical input is higher, perform the following procedures to detect and correct the abnormal input:

Note: If the electrical input is higher than the maximum allowed value, the 3 battery warning

lights ash simultaneously.

13. Check the tightening of F1 fuse screws.

14. Check if there is dust or dirt (ropes, cables, etc.) on the brush hubs.

15. Check the motor carbon brushes (see the procedure in the following paragraph).

16. Remove the motors (see the procedure in “Brush motor Disassembly/Assembly” paragraph), and check the condition of all components. If the above-mentioned procedures do not lead to a correct electrical input, it is necessary to replace the motors.

Brush Motor Electrical Input Check (continued)

Reset

17. Connect the driving wheel connector.

18. Remove the jumper wire and enable the driver's seat microswitch.

19. Remove the wooden shims and install the brushes.

Scrub System, Disc 87Service Manual – SC3000

P100469

Scrub System, Disc 88Service Manual – SC3000

Brush Motor Carbon Brush Check/Replacement

Check

1. Remove the brush/pad-holder deck.

2. Remove dust and dirt from the motor carbon brush support area (A).

3. Disengage the fasteners (B) and (C), then remove the four carbon brush supports (A). If necessary, disconnect the electrical connections (D).

4. Check the carbon brushes (E) for wear. Replace the carbon brushes when:

5. If necessary, disconnect the connections (F) and remove the carbon brushes with their supports (A) and

replace them.

6. Replace the carbon brushes as an assembly.

Reset

7. Assemble the components in the reverse order of disassembly, and note the following:

◦ When connecting the terminals (F), take care of their insulation from the surrounding parts of the

frame.

S301327

Brush Motor Disassembly/Assembly

Scrub System, Disc 89Service Manual – SC3000

Disassembly

1. Remove the brush/pad-holder deck.

2. At the workbench, remove the screw (A) from

the reduction unit which has to be disassembled.

3. Remove the hub assembly (B) with a puller.

4. Remove the screws (C).

5. Remove the gearmotor (D).

6. Recover the key (E).

Note: For further information on deck components see the Parts List.

Assembly

7. Assemble the components in the reverse order of

disassembly.

P100378

Brush Deck Lifting/Lowering Actuator Disassembly/Assembly

Disassembly

1. Lower the brush deck.

2. Remove the deck.

3. Turn the ignition key to “0” and disconnect the batteries.

4. Disconnect the actuator connector (see the function electronic board).

5. Remove the screw (A) and recover nuts, bushings and washers.

6. Remove the screw (B) and recover the washer.

7. Remove the actuator (C).

Assembly

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

Scrub System, Disc 90Service Manual – SC3000

P100381

Scrub System, Disc 91Service Manual – SC3000

Brush Deck Adjuster Spring Disassembly/Assembly

Disassembly

1. Drive the machine on a level oor.

2. Remove the brush deck.

3. Turn the ignition key to “0” and disconnect the batteries.

4. Remove the front fairing (see the procedure in “Front Fairing Disassembly/Assembly” paragraph, Steering System section).

5. Place a wooden shim (A) under the deck holder assembly. Wooden shim thickness must be 160 mm.

6. Unscrew the ring nut (B), recover the washer, then carefully remove the spring (C).

7. If necessary, replace the spring taking care to properly place the elastic ends (D) on the frame.

Assembly

8. Assemble the components in the reverse order of disassembly, and note the following:

◦ Tighten the ring nut (B) so that the deck holder assembly can turn freely.

P100582

Scrub System, Disc 92Service Manual – SC3000

Brush Deck Drive Guide Disassembly/Assembly

Disassembly

1. Drive the machine on a level oor.

2. Remove the brush/pad-holder deck and leave the deck holder assembly lifted.

3. Turn the ignition key to “0” and disconnect the batteries.

4. Turn the steering wheel to accommodate the position of the drive guide (A) to be removed.

5. Under the machine, remove the screws (B) and the drive guide (A).

6. Replace the drive guide if it is too worn.

Assembly

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

P100383

Specications

Scrub System, Disc 93Service Manual – SC3000

Description

Cleaning width 26 in (660 mm) 28 in (710 mm)

Brush/pad diameter 13 in (330 mm) 14 in (355 mm)

Deck right/left offset (variable)

Brush distance from the oor (when lifted) 1.9 in (48 mm) 1.9 in (48 mm)

Brush/pad-holder motor power 2 x 0.53 hp (2 x 400 W)

Maximum load

Maximum speed

Actuator technical data

Voltage

Protection class

Stroke

Gas spring technical data

Strength

Brush/pad-holder speed 230 rpm

Brush/pad-holder pressure with extra-pressure function turned off 66.1 lb (30 kg) 70.5 lb (32 kg)

Brush/pad-holder pressure with extra-pressure function turned on 105.8 lb (48 kg) 110.2 lb (50 kg)

Nilsk BR 652

Advance SC3000

0 ÷ 3.9 in / 1 ÷ 0 in

(0 ÷ 100 mm / 25 ÷ 0 mm)

700 N

16 mm/s

24V

IP 65

50 mm

180 N

Nilsk BR 752

0.6 ÷ 5.9 in / 4.1÷ 0 in

(15 ÷ 150 mm / 105 ÷ 0 mm)

Solution System 94Service Manual – SC3000

Solution System

Functional Description

The solution system supplies water and detergent to the brushes when cleaning the oor. The solution tank is also the main machine body. There is a manual valve on the right side of the tank to close the water supply whenever maintenance must be performed on the machine. The solution ows from the tank to the tap, through the lter and solenoid valve (EV1) and then to the brush deck. The detergent pump (M4) installed only on EcoFlex™ systems, controls the detergent ow from the EcoFlex™ tank and pipes the ow into the main hose after the solenoid valve (EV1). There is a one-way valve between the EcoFlex™ system pump and the connection with the main hose. The EcoFlex™ system can be selected with the specic lever under the steering wheel. The operator sets the amount of detergent with the keys on the serigraphed electronic board installed on the steering wheel. There is a manual valve under the tank in a central position, which can be used to drain any liquid in the battery compartment. There is also a manual valve on the left side, which can be used to drain the detergent when cleaning the tank. The solution ow is regulated by different ON/OFF cycling timings depending on:

• Water ow setting (0 ÷ 4)

• Solution tank water level.

Both Solenoid valve and Detergent pump (when EDS system is enabled) follow the same above timings. The Solenoid valve and the detergent pump are running only when needs the following conditions/inputs:

• Seat microswitch closed

• Brushes function enabled

• Drive pedal pressed

• Battery level not in red light blinking condition.

Wiring Diagram

Solenoid valve (EV1)

BKWH

Detergent pump (M4)

J2.1

J2.2

J2.3

J2.4

Function electronic board (EB1)

P100575

Component Location

2 3 4 7 6

Solution System 95Service Manual – SC3000

• Solution/clean water tank

• Filling cap

• Solution/clean water valve

• Solution lter

• Solenoid valve (EV1)

EcoFlex™ detergent

Battery compartment

uid valve

tank

• EcoFlex™ detergent tank

• EcoFlex™ detergent pump (M4)

• One-way valve

• Solution/clean water drain valve

• Battery compartment uid valve

Filling cap

Solution/clean water

tank

Solution/clean water

drain valve

Solution/clean water

valve Solution lter Solenoid valve (EV1) One-way valve

P100576

EcoFlex™ detergent

pump (M4)

P100577

Solution System 96Service Manual – SC3000

Maintenance and Adjustments

Solution/clean water tank emptying

1. Drive the machine to the appointed disposal area.

2. Turn the ignition key to “0”.

3. Remove the adapter from its housing inside the battery compartment.

4. Install the adapter (A) on the squeegee vacuum hose (B), then fasten it to the drain valve (C).

5. Turn the ignition key to “I” and turn on the vacuum system with the vacuum system push button .

6. Open the drain valve (C) to drain the tank.

7. The valve (C) is open when it is in the position (D) and it is closed when it is in the position (E).

8. Then, turn of the vacuum system and drain the recovery tank with the hose.

9. Close the drain valve (C), remove the adapter (A) and install the vacuum hose (B) on the squeegee.

P100366

Solution System 97Service Manual – SC3000

Solution lter cleaning

1. Drive the machine on a level oor.

2. Turn the ignition key to “0”.

3. Close the solution valve (A) under the machine, behind the right rear wheel. The valve (A) is closed when it is in the position (B) and it is open when it is in the position (C).

4. Remove the transparent cup (D), recover the gasket (E), then remove the lter strainer (F) under the machine, in front of the right rear wheel. Clean them with water and install them on the support (G).

Note: Thelterstrainer(F)mustbecorrectlypositionedonthehousingofthesupport(G).

5. Open the valve (A).

P100578

Solution System 98Service Manual – SC3000

EcoFlex™ System Draining

1. Clean the detergent tank according to the procedure shown in the previous paragraph. To remove the detergent remained in the hoses and in the pump, perform the following procedure.

2. Turn on the machine by turning the ignition key to “I”.

3. Press the detergent ow control push button . Check that the push button LED turns on.

4. Press the detergent ow control push button and the solution ow increase push button at the same time, until the push button LED starts ashing (after about 5 seconds).

5. Release the switches and wait for the detergent ow control push button LED to stop ashing and for the vacuum system to turn on.

6. Collect the detergent remained on the oor.

7. Turn the ignition key to “0”.

8. Lift the recovery tank, then check that the detergent tank hose is empty, otherwise perform steps 3 to 7 again.

Note: Thedrainingcyclelastsabout30seconds,thenthevacuumfunctionautomatically

turnson,whichallowstoremovethedetergentremained.Thedrainingcyclecanalsobe performedwiththedetergenttankfullofwater,thuscleaningthesystemthoroughly.It isadvisabletoperformthistypeofdrainingtocleantheEcoFlex™systemfromdirtand depositsifthemachinehasnotbeenused/cleanedforalongtime.Thedrainingcycle canbeperformedalsotoquicklyllthedetergentsupplyhosewhenthetankisfullbut thesystemisstillempty.Ifnecessary,thedrainingcyclecanberepeatedlyperformed.

Solution System 99Service Manual – SC3000

EcoFlex™ system disabling procedure

In order to permanently disable the EcoFlex™ system, proceed as follows:

1. Turn off the machine by turning the ignition key (A) to “0”.

2. Lift the lever (B), then turn the ignition key (A) to “I”.

3. Release the lever (A) at least 8 seconds after turning on the machine.

After this procedure, the EcoFlex™ lever cannot be operated again (LED (C) off) and the detergent concentration level is the one which has been set.

In order to re-enable the system, repeat the steps 1 to 3.

Note: ThepermanentdisablingoftheEcoFlex™systemisstoredintomemoryevenafterthe

machineisturnedoff.

P100579

Troubleshooting

Trouble Possible Causes Remedy

Solution System 100Service Manual – SC3000

Small amount of solution or no solution reaches the brush

The solution reaches the brush also

when the machine is off

The tank lter (optional) is clogged/dirty Clean the lter

The solution lter is clogged/dirty Clean the lter

The solution valve is closed/semi-closed Replace the valve

The solenoid valve (EV1) is broken or there is an open in

the electrical connection

There is debris in the solution/clean water tank clogging the output hole

There is debris in the solution/clean water hoses clogging the ow

The function electronic board (EB1) is faulty Replace

The display electronic board (EB2) is faulty Replace

The dashboard electronic board (EB3) is faulty Replace

There is dirt or calcium deposit on the solenoid valve gaskets (EV1)

The solenoid valve (EV1) is broken Replace the solenoid valve

Replace the solenoid valve/repair

the electrical connection

Clean the tank

Clean the hoses

Clean the solenoid valve inner gaskets

Nilfisk-Advance SC3000, BR 652, 9087260020, 9087261020, BR 752 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual