Nilfisk BR 752 Service Manual

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

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

+ 100 hidden pages