NILFISK SC3000 Service Manual
SC3000 26” Disc
SERVICE MANUAL
Advance models: 9087267020 - 26” Disc - EcoFlex™ + Charger
ENGLISH
9099052000(3)2011-07
SERVICE MANUAL
ENGLISH
TABLE OF CONTENTS
GENERAL INFORMATION .............................................................................................................................................. 3
CONVENTIONS .............................................................................................................................................................................. 3
MACHINE LIFTING ......................................................................................................................................................................... 3
MACHINE TRANSPORTATION ....................................................................................................................................................... 3
OTHER REFERENCE MANUALS ................................................................................................................................................... 3
SAFETY ........................................................................................................................................................................................... 3
SYMBOLS ....................................................................................................................................................................................... 3
GENERAL INSTRUCTIONS ............................................................................................................................................................ 4
TECHNICAL DATA ........................................................................................................................................................................... 6
DIMENSIONS .................................................................................................................................................................................. 8
MAINTENANCE ............................................................................................................................................................................... 9
SCHEDULED MAINTENANCE TABLE ........................................................................................................................................... 9
MACHINE NOMENCLATURE ....................................................................................................................................................... 10
SOLUTION/CLEAN WATER SUPPLY SYSTEM ........................................................................................................... 13
SOLENOID VALVE/SOLUTION SYSTEM FILTER DISASSEMBLY/ASSEMBLY .......................................................................... 13
TROUBLESHOOTING ................................................................................................................................................................... 14
WIRING DIAGRAM ........................................................................................................................................................................ 14
ECOFLEX™ SYSTEM ................................................................................................................................................... 15
DETERGENT PUMP AND ONE-WAY VALVE DISASSEMBLY/ASSEMBLY ................................................................................. 15
ECOFLEX™ SYSTEM DISABLING PROCEDURE ...................................................................................................................... 16
TROUBLESHOOTING ................................................................................................................................................................... 16
BRUSHING SYSTEM ..................................................................................................................................................... 17
BRUSH/PAD DECK DISASSEMBLY/ASSEMBLY ......................................................................................................................... 17
BRUSH MOTOR ELECTRICAL INPUT CHECK ............................................................................................................................ 18
BRUSH MOTOR CARBON BRUSH CHECK/REPLACEMENT .................................................................................................... 20
BRUSH MOTOR DISASSEMBLY/ASSEMBLY .............................................................................................................................. 21
BRUSH DECK LIFTING/LOWERING ACTUATOR DISASSEMBLY/ASSEMBLY ......................................................................... 22
BRUSH DECK ADJUSTER SPRING DISASSEMBLY/ASSEMBLY .............................................................................................. 23
BRUSH DECK DRIVE GUIDE DISASSEMBLY/ASSEMBLY ......................................................................................................... 24
TROUBLESHOOTING ................................................................................................................................................................... 25
WIRING DIAGRAM ........................................................................................................................................................................ 26
RECOVERY WATER SYSTEM ...................................................................................................................................... 27
VACUUM SYSTEM MOTOR ELECTRICAL INPUT CHECK ......................................................................................................... 27
VACUUM SYSTEM MOTOR CARBON BRUSH CHECK/REPLACEMENT .................................................................................. 28
VACUUM SYSTEM MOTOR DISASSEMBLY/ASSEMBLY ........................................................................................................... 29
SQUEEGEE LIFTING ACTUATOR DISASSEMBLY/ASSEMBLY ................................................................................................. 30
SQUEEGEE LIFTING CABLE DISASSEMBLY/ASSEMBLY ......................................................................................................... 31
TROUBLESHOOTING ................................................................................................................................................................... 32
WIRING DIAGRAM ........................................................................................................................................................................ 33
SC3000 26” Disc 9099052000
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SERVICE MANUAL
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9099052000 SC3000 26” Disc
PARKING BRAKE SYSTEM .......................................................................................................................................... 35
ELECTROMAGNETIC BRAKE DISASSEMBLY/ASSEMBLY ....................................................................................................... 35
TROUBLESHOOTING ................................................................................................................................................................... 36
WIRING DIAGRAM ........................................................................................................................................................................ 37
DRIVE SYSTEM ............................................................................................................................................................. 39
DRIVE SYSTEM MOTOR ELECTRICAL INPUT CHECK ............................................................................................................. 39
DRIVE SYSTEM MOTOR CARBON BRUSH CHECK/REPLACEMENT ...................................................................................... 40
DRIVE SYSTEM MOTOR DISASSEMBLY/ASSEMBLY................................................................................................................ 41
DRIVING WHEEL DISASSEMBLY/ASSEMBLY ............................................................................................................................ 43
DRIVER’S SEAT SAFETY MICROSWITCH REPLACEMENT ...................................................................................................... 45
TROUBLESHOOTING ................................................................................................................................................................... 45
WIRING DIAGRAM ........................................................................................................................................................................ 46
OTHER SYSTEMS ......................................................................................................................................................... 47
SCREW AND NUT TIGHTENING CHECK .................................................................................................................................... 47
FRONT FAIRING DISASSEMBLY/ASSEMBLY ............................................................................................................................. 47
ELECTRICAL SYSTEM ................................................................................................................................................. 49
MACHINE WORKING HOUR CHECK .......................................................................................................................................... 49
CHARGE CONDITION DISPLAY .................................................................................................................................................. 49
BATTERY TYPE SETTING (WET OR GEL/AGM) ......................................................................................................................... 50
FUSE AND ELECTROMAGNETIC SWITCH CHECK/REPLACEMENT ....................................................................................... 51
FUNCTION ELECTRONIC BOARD LAY-OUT AND DISASSEMBLY/ASSEMBLY ........................................................................ 52
DISPLAY ELECTRONIC BOARD AND DASHBOARD ELECTRONIC BOARD REPLACEMENT ................................................ 53
TROUBLESHOOTING ................................................................................................................................................................... 54
FUNCTION ELECTRONIC BOARD ERROR CODES .................................................................................................................. 55
BLACK-BOX: RECORD OF ALARMS, BATTERY MANAGEMENT PARAMETERS, PARTIAL HOUR COUNTER ...................... 57
DISPLAY OF CURRENT VALUES OF SIGNIFICANT VARIABLES, HOUR COUNTERS AND STORED ALARMS .................... 59
DISPLAY AND CHANGE OF PARAMETERS WHICH CAN BE SET BY THE USER ................................................................... 60
FUNCTION ELECTRONIC BOARD PARAMETER ....................................................................................................................... 60
CONNECTORS ............................................................................................................................................................................. 61
ELECTRICAL COMPONENT LAYOUT ......................................................................................................................................... 63
WIRING DIAGRAM ........................................................................................................................................................................ 65
GENERAL INFORMATION
SERVICE MANUAL
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SC3000 26” Disc 9099052000
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GENERAL INFORMATION
CONVENTIONS
Forward, backward, front, rear, left or right are intended with reference to the operator’s position, that is to say in driving position.
MACHINE LIFTING
WARNING!
Do not work under the lifted machine without supporting it with safety stands.
MACHINE TRANSPORTATION
WARNING!
Before transporting the machine, make sure that:
All covers are closed. –
The ignition key is removed. –
The machine is securely fastened to the means of transport. –
OTHER REFERENCE MANUALS
The following manuals are available at Nilsk Literature Service Department:
SC3000 Operator manual - Form Number 9098828000 –
SC3000 Spare Parts List - Form Number 9098828000 –
24V 670W Motor Installation Instructions - Form Number 9098456000 –
SAFETY
The following symbols indicate potentially dangerous situations. Always read this information carefully and take all necessary
precautions to safeguard people and property.
SYMBOLS
DANGER!
It indicates a dangerous situation with risk of death for the operator.
WARNING!
It indicates a potential risk of injury for people or damage to objects.
CAUTION!
It indicates a caution related to important or useful functions.
Pay careful attention to the paragraphs marked by this symbol.
NOTE
It indicates a remark related to important or useful functions.
CONSULTATION
It indicates the necessity to refer to the Operator manual before performing any procedure.
GENERAL INFORMATION
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SERVICE MANUAL
4
9099052000 SC3000 26” Disc
GENERAL INSTRUCTIONS
Specic warnings and cautions to inform about potential damages to people and machine are shown below.
DANGER!
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 battery away from sparks, ames and incandescent material. During the normal operation 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 vapours: –
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.
WARNING!
Carefully read all the instructions before performing any maintenance/repair procedure. –
Before using the battery charger, ensure that frequency and voltage values, indicated on the machine serial –
number plate, match the electrical mains voltage.
Do not pull or carry the machine by the battery charger cable and never use the battery charger cable as –
a handle. Do not close a door on the battery charger cable, or pull the battery charger cable around sharp
edges or corners. Do not run the machine on the battery charger cable.
Keep the battery charger cable away from heated surfaces. –
Do not use the machine if the battery charger cable or plug is damaged. If the machine is not working as it –
should, has been damaged, left outdoors or dropped into water, return it to the Service Center.
To reduce the risk of re, electric shock, or injury, do not leave the machine unattended when it is plugged –
in. Before performing any maintenance procedure, disconnect the battery charger cable from the electrical
mains.
Do not smoke while charging the batteries. –
To avoid any unauthorised 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 this Manual. –
Do not allow to be used as a toy. Close attention is necessary when used near children. –
Use only as shown in this Manual. Use only Nilsk’s recommended accessories. –
Take all necessary precautions to prevent hair, jewelry and loose clothes from being caught by the machine –
moving parts.
GENERAL INFORMATION
SERVICE MANUAL
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SC3000 26” Disc 9099052000
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WARNING!
Do not use the machine on incline. –
Do not tilt the machine more than the angle indicated on the machine itself, in order to prevent instability. –
Do not use the machine in particularly dusty areas. –
Use the machine only where a proper lighting is provided. –
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. –
The machine working temperature must be between 32 °F and 104 °F (0 °C and +40 °C). –
The machine storage temperature must be between 32 °F and 104 °F (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 afxed 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 2,5 mi/h (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 specied in the Operator 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
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SERVICE MANUAL
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9099052000 SC3000 26” Disc
TECHNICAL DATA
General technical data
Description SC3000 26” Disc
Cleaning width
Squeegee width 35 in (890 mm)
Solution/clean water tank capacity 21 US gal (80 L)
Solution ow da 0,26 a 0,8 US gal/min. (from 1 to 3 L/min.)
Recovery tank capacity 21 US gal (80 L)
Minimum/maximum solution ow (with and without EcoFlex™ system) 0 ÷ 0,8 US gal/min. (0 ÷ 3 L/min.)
EcoFlex™ system solution tank capacity 1,3 US gal (5 L)
EcoFlex™ system detergent ow setting Ratio 1:400 ÷ 1:33
Rear wheel diameter
Front wheel specic pressure on the oor (*)
Rear wheel specic pressure on the oor (*)
Front steering, driving and braking wheel diameter
Vacuum system motor power
Drive system motor power
Maximum speed
Maximum gradient when working
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
Machine maximum length
Machine width without squeegee
Vacuum system circuit capacity 0.0098 MPa (1.000 mmH2O)
26 in (660 mm)
9.8 in (250 mm)
72 psi (0,5 N/mm2)
130 psi (0,9 N/mm2)
8,8 in (225 mm)
0.56 hp (420 W)
0.4 hp (300 W)
3.7 mi/h (6 km/h)
2% (1,14°)
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 x 6 V batteries, 180 Ah C5 (WET)
4 x 6 V batteries, 180 Ah C5 (GEL/AGM)
46,8 in (1.190 mm)
53.5 in (1.360 mm)
26.4 in (670 mm)
Machines have been tested under the following conditions:(*)
With operator [165.3 lb (75 kg)] if ride-on •
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•
GENERAL INFORMATION
SERVICE MANUAL
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SC3000 26” Disc 9099052000
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TECHNICAL DATA (Continues)
Technical data for machines with brush/pad-holder deck
Description SC3000 26” Disc
Brush/pad diameter
Weight without batteries and with empty tanks
Maximum weight with batteries, full tanks and operator (GVW)
Hourly efciency [2,5 mi/h (4 km/h)] ~ 24488 ft2 (~ 2,275 m2)
Deck right/left offset (variable) 0 ÷ 3,9 in / 1 ÷ 0 in (0 ÷ 100 mm / 25 ÷ 0 mm)
Brush distance from the oor (when lifted) 1,9 in (48 mm)
Brush/pad motor power
Brush/pad-holder speed
Brush/pad-holder pressure with extra-pressure function turned off
Brush/pad-holder pressure with extra-pressure function turned on
13 in (330 mm)
385.8 lb (175 kg)
983.2 lb (446 kg)
2 x 0.53 hp (2 x 400 W)
230 rpm
66.1 lb (30 kg)
105.8 lb (48 kg)
GENERAL INFORMATION
ENGLISH
SERVICE MANUAL
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9099052000 SC3000 26” Disc
1190 mm (46.85 in)
890 mm (35 in)1360 mm (53.5 in)
DIMENSIONS
SC3000 26” Disc
P100367
GENERAL INFORMATION
SERVICE MANUAL
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SC3000 26” Disc 9099052000
9
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 dened 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 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
Solution lter cleaning
Vacuum system motor lter cleaning
Battery (WET) uid level check
Screw and nut tightening check (1)
Electromagnetic brake efciency 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
And after the rst 8 working hours.(1)
GENERAL INFORMATION
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SERVICE MANUAL
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9099052000 SC3000 26” Disc
18 13 12 10 11 546
7
17 98
15
14
19
16
20
3
2
1
MACHINE NOMENCLATURE
Throughout this Manual you will nd numbers in brackets – for example: (2). These numbers refer to the components indicated in
these two nomenclature pages. Refer to these pages whenever you need to identify a component mentioned in the text.
Steering wheel with control panel (see the following 1.
paragraph)
Steering wheel height control lever2.
Ignition key3.
Drive pedal4.
Heel support height adjustment5.
Front steering, driving and braking wheel6.
Electromagnetic brake unlocking lever7.
Emergency push-button8.
Battery connector9.
Brush/pad-holder deck10.
Bumper wheel11.
Solution lter12.
Solenoid valve13.
Solution/clean water tank opening/closing valve14.
Squeegee hook15.
Battery charger (optional)16.
Seat17.
Squeegee blades assembly18.
(Dumping) recovery tank assembly19.
Recovery tank cover20.
P100370
GENERAL INFORMATION
SERVICE MANUAL
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SC3000 26” Disc 9099052000
11
MACHINE NOMENCLATURE (Continues)
Front
24V
21 27 26
25
42
41
43
44
37 36
38
35
33
34
30
33
34
32
31
22
23
28
24
32
29
38
4039
Serial number plate/technical data/conformity certication21.
Solution/clean water tank22.
Solution/clean water tank ller plug with removable ller 23.
hose
Recovery water drain hose24.
Tank assembly stand25.
Container with debris collection grid26.
Vacuum grid with automatic shut-off oat27.
Solution/clean water draining adapter28.
Solution/clean water tap29.
Squeegee30.
Squeegee vacuum hose31.
Squeegee bumper wheels32.
Squeegee support wheels33.
Squeegee mounting handwheels34.
Squeegee balance adjusting handwheel35.
Vacuum system motor36.
Vacuum system motor lter37.
Battery connection diagram38.
Batteries39.
Battery caps40.
Battery charger cable (optional)41.
Detergent tank (*)42.
Electronic component compartment cover43.
(Lifted) recovery tank assembly and driver’s seat44.
Only for machine with EcoFlex™ system (optional)(*)
P100371
GENERAL INFORMATION
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SERVICE MANUAL
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9099052000 SC3000 26” Disc
52
54
53
56
55
51
57
58
59
60
72
70
71
68
67
65
69
66
63
64
62
61
MACHINE NOMENCLATURE (Continues)
Reverse gear activation/deactivation lever51.
Reverse gear LED indicator52.
Detergent ow control switch (*)53.
Washing detergent ow control switch led indicator (*)54.
Mute function switch55.
Mute function switch LED56.
Horn switch57.
Ignition key58.
Solution ow increase switch59.
Solution ow decrease switch60.
Solution ow indicator61.
Battery warning lights62.
Green warning light - charged battery•
Yellow warning light - semi-discharged battery•
Red warning light - discharged battery•
Vacuum system switch63.
Vacuum system led indicator64.
Extra pressure switch65.
Extra pressure led indicator66.
Brush/pad-holder deck and squeegee lifting/lowering 67.
switch
Brush/pad-holder deck and squeegee lifting/lowering LED 68.
indicator
EcoFlex™ activation/deactivation lever (*)69.
EcoFlex™ system LED indicator (*):70.
LED on - EcoFlex™ system on•
LED ashing - EcoFlex™ system override•
Hour counter and solution level display:71.
When the machine is started, it displays for a few •
seconds the number of working hours which have been
performed.
While using the machine, it displays the solution/ •
washing water level in the tank (in gallons).
When the level is above 18 USgal, the display indicates •
“FUL”.
When the level is under 4 USgal, the display indicates •
“LO”.
When the tank is almost empty, “LO” starts ashing.•
NOTE
The display could indicate “LO” even if the tank is
not completely empty, thus allowing to complete
the cleaning cycle; in any case, it is recommended
to check the actual solution ow supplied to the
brushes.
Anti-skid control activation LED indicator72.
Only for machine with EcoFlex™ system (optional)(*)
P100372
SOLUTION/CLEAN WATER SUPPLY SYSTEM
SERVICE MANUAL
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SC3000 26” Disc 9099052000
13
A
A
B
D
E
F
G
G
C
H
SOLUTION/CLEAN WATER SUPPLY SYSTEM
SOLENOID VALVE/SOLUTION SYSTEM FILTER DISASSEMBLY/ASSEMBLY
Disassembly
Place the machine on a hoisting system (if available), then lift it. Otherwise, drive the machine on a level oor.1.
Lower the brush deck.2.
Lower and remove the squeegee from the holder.3.
Turn the ignition key to “0” and disconnect the batteries.4.
On the right side of the machine, remove the screws and nuts (A).5.
Disconnect the connector (B).6.
Disconnect the hose (C) and (D).7.
Recover the whole assembly and, at the workbench, remove the solenoid valve (E), or the lter assembly (F) by disconnecting/8.
unscrewing the connecting/fastening components.
Assembly
Assemble the components in the reverse order of disassembly, and note the following:9.
Before screwing the threaded ttings (G) clean them, then apply Teon tape, according to the screwing direction.•
When assembling the lter (F) the stamped arrow (H) must be tuned in the direction of the solution ow.•
P100373
SOLUTION/CLEAN WATER SUPPLY SYSTEM
ENGLISH
SERVICE MANUAL
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9099052000 SC3000 26” Disc
TROUBLESHOOTING
Small amount of solution or no solution reaches the brush
Possible causes:
The tank lter (optional) is clogged/dirty (clean).1.
The solution lter is clogged/dirty (clean).
The solution tap is closed/semi-closed (replace).2.
The solenoid valve (EV1) is broken or there is an open in the electrical connection (replace the solenoid valve/repair the 3.
electrical connection).
There is debris in the solution/clean water tank clogging the output hole (clean the tank).4.
There is debris in the solution/clean water hoses clogging the ow (clean the hoses).5.
The function electronic board (EB1) is faulty (replace).6.
The display electronic board (EB2) is faulty (replace).7.
The dashboard electronic board (EB3) is faulty (replace).8.
The solution reaches the brush also when the machine is off
Possible causes:
There is dirt or calcium deposit on the solenoid valve gasket (clean).1.
The solenoid valve is broken (replace).2.
WIRING DIAGRAM
P100374A
ECOFLEX™ SYSTEM
SERVICE MANUAL
ENGLISH
SC3000 26” Disc 9099052000
15
A
E
G
ECOFLEX™ SYSTEM
DETERGENT PUMP AND ONE-WAY VALVE DISASSEMBLY/ASSEMBLY
Disassembly
Place the machine on a hoisting system (if available), then lift it. Otherwise, drive the machine on a level oor.1.
Lower the brush deck.2.
Turn the ignition key to “0” and disconnect the batteries.3.
Open the detergent tank plug (42).4.
On the left side of the machine, remove the screws and nuts (A).5.
Disconnect the connectors (B) and (C).6.
Disconnect the hose (D).7.
Remove the detergent pump (E).8.
If necessary, remove the retaining springs (F) and disconnect the one-way valve (G) from the relevant hoses.9.
Assembly
Assemble the components in the reverse order of disassembly, and note the following:10.
Connect the connector with black cable (B) and white cable (C) as shown in the gure.•
Install the one-way valve (G) with the arrow (H) turned in the direction of the detergent ow.•
P100375
P100376
ECOFLEX™ SYSTEM
ENGLISH
SERVICE MANUAL
16
9099052000 SC3000 26” Disc
C
B
A
ECOFLEX™ SYSTEM DISABLING PROCEDURE
In order to permanently disable the EcoFlex™ system, proceed as follows:
Turn off the machine by turning the ignition key (58) to “0”.1.
Lift the lever (69), then turn the ignition key (58) to “I”.2.
Release the lever (69) at least 8 seconds after turning on the machine.3.
After this procedure, the EcoFlex™ the lever cannot be operated again (LED (70) 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.
TROUBLESHOOTING
Small amount of detergent or no detergent reaches the brush
Possible causes:
The detergent ow percentage is too low (check/change the percentage as shown in the Operator manual).1.
The hydraulic circuit upstream of the detergent pump is not triggered (check if the hose is lled and, if necessary, perform one 2.
or more draining cycle, as shown in the relevant paragraph of the Operator manual).
The pump (M1) is broken or there is an open in the electrical connection (replace the pump/repair the electrical connection).3.
There is foreign material/debris in the detergent tank clogging the output hole (clean the tank).4.
There is debris in the detergent hoses clogging the detergent ow (clean the hoses).5.
The detergent ow control switch is malfunctioning (check that the LED (78) turns on; if necessary, replace the dashboard 6.
electronic board).
The function electronic board (EB1) is not set for the operation with EcoFlex™ system (if equipped, remove the jumper wire 7.
(J4) in front of the electronic board).
The function electronic board (EB1) is faulty (replace).8.
The display electronic board (EB2) is faulty (replace).9.
The dashboard electronic board (EB3) is faulty (replace).10.
The detergent reaches the brush also when the machine is off
Possible causes:
The pump (M1) is broken (replace).1.
The one-way valve is broken (replace).2.
There is water in the detergent tank
Possible causes:
The one-way valve is broken (replace).1.
The EcoFlex™ system does not work in the “US mode” but in the “EU mode”.
Possible causes:
Check the GREEN bridge from pin 5 to pin 6 (A) of the connector J1 (B): it has not to be present (if present, switch off the 1.
machine and cut it).
The EcoFlex™ system does not turn on when pressing the switch (77) and the LED (78) does not turn on
To check the function electronic board, remove the panel as shown in Function Electronic Board Disassembly/Assembly paragraph
(steps 1 to 4).
Possible causes:
The function electronic board (EB1) is not set for the operation with EcoFlex™ system [if present, remove the jumper wire J8 1.
(C) behind of the electronic board].
The dashboard electronic board (EB3) is faulty (replace).2.
P100377A
BRUSHING SYSTEM
SERVICE MANUAL
ENGLISH
SC3000 26” Disc 9099052000
17
BRUSHING SYSTEM
B
D
A
C
F
E
BRUSH/PAD-HOLDER DECK DISASSEMBLY/ASSEMBLY
Disassembly
Drive the machine on a level oor or on a lift platform to facilitate disassembly.1.
Remove the brushes, as shown in the Operator manual.2.
Turn the ignition key (58) on “I”.3.
Pressing the switch (67) to lower the brush/pad deck.4.
Turn the ignition key (58) to “0”.5.
Disconnect the red connector (A).6.
Unplug the pipe (B) of the cleaning solution.7.
Unscrew the screw (C) and recover the nut.8.
Remove the safety pins (D).9.
Unscrew the nut (E) and recover the washer, then remove the brush/pad-holder deck (F).10.
Assembly
Assemble the components in reverse order of disassembly.11.
BRUSHING SYSTEM
ENGLISH
SERVICE MANUAL
18
9099052000 SC3000 26” Disc
BRUSH MOTOR ELECTRICAL INPUT CHECK
WARNING!
This procedure must be performed by qualied personnel only.
Drive the machine on a level oor.1.
Remove the brushes, as shown in the Operator manual.2.
Place two wooden shims (A) under the brush deck sides (B), as shown in the gure. Wooden shim thickness must be 1 in (25 3.
mm).
WARNING!
Keep the wooden shims at an appropriate distance from the brush hubs.
Use a jumper wire to disable the driver’s seat microswitch.4.
Disconnect the driving wheel connector to disable the drive system.5.
Turn the ignition key (58) to “I”.6.
Lower the brush/pad-holder deck by pressing the switch (67).7.
Apply the amperometric pliers (E) on one cable (F) of the right motor (G), or on one cable (H) of the left motor (I).8.
Turn on the brushes by pressing the drive pedal (4), then check that the electrical input of the right (G) or left motor (I) is as 9.
follows:
3 to 4 A at 24V, for the brush/pad-holder deck motors;•
Turn off the brushes by releasing the drive pedal (4) and lift the brush/pad-holder deck by pressing the switch (67).10.
Turn the ignition key (58) to “0”.11.
Remove the amperometric pliers (A).
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 (81) ash simultaneously.
Check the tightening of F1 fuse screw (see the procedure in Fuse check/replacement paragraph).•
Check if there is dust or dirt (ropes, cables, etc.) on the brush hubs.•
Check the motor carbon brushes (see the procedure in the relevant paragraph).•
Remove the motors (see the procedure in the relevant paragraph), and check the condition of all components.•
If the above-mentioned procedures do not lead to a correct electrical input, the motors must be replaced (see the procedure in
the relevant paragraph).
Reset
Connect the driving wheel connector.12.
Remove the jumper wire and enable the driver’s seat microswitch.13.
Remove the wooden shims and install the brushes.14.
BRUSHING SYSTEM
SERVICE MANUAL
ENGLISH
SC3000 26” Disc 9099052000
19
BRUSH MOTOR ELECTRICAL INPUT CHECK (Continues)
S301326
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