Page 1
Simple. Clean.
Razor™ 20 / 20T
SERVICE MANUAL
Kent model: 908 7200 020
908 7201 020
9097065000(2) 2009-06
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SERVICE MANUAL
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9097065000(2)2009-06 Razor™ 20 / 20T
TABLE OF CONTENTS
GENERAL INFORMATION ......................................................................................................................................... 4
CONVENTIONS ..................................................................................................................................................... 4
MACHINE LIFTING ................................................................................................................................................ 4
MACHINE TRANSPORTATION ............................................................................................................................. 4
OTHER REFERENCE MANUALS ......................................................................................................................... 4
SAFETY ................................................................................................................................................................. 5
SYMBOLS .............................................................................................................................................................. 5
GENERAL INSTRUCTIONS .................................................................................................................................. 5
TECHNICAL DATA ................................................................................................................................................ 7
DIMENSIONS MACHINE ....................................................................................................................................... 8
MAINTENANCE ..................................................................................................................................................... 9
SCHEDULED MAINTENANCE TABLE ................................................................................................................. 9
MACHINE NOMENCLATURE ............................................................................................................................. 10
SOLUTION/CLEAN WATER SUPPLY SYSTEM ...................................................................................................... 13
SOLUTION/CLEAN WATER TANK AND SUPPLY SYSTEM CLEANING ............................................................ 13
SOLUTION FILTER CLEANING .......................................................................................................................... 13
SOLENOID VALVE DISASSEMBLY/ASSEMBLY ................................................................................................ 14
TROUBLESHOOTING ......................................................................................................................................... 14
BRUSHING SYSTEM ................................................................................................................................................ 15
BRUSH/PAD CLEANING .....................................................................................................................................15
BRUSH/PAD-HOLDER/CYLINDRICAL BRUSH DECK DISASSEMBLY/ASSEMBLY ........................................ 15
BRUSH MOTOR ELECTRICAL INPUT CHECK .................................................................................................. 16
BRUSH MOTOR CARBON BRUSH CHECK/REPLACEMENT .......................................................................... 18
BRUSH MOTOR DISASSEMBLY/ASSEMBLY .................................................................................................... 18
BRUSH ENABLING MIVROSWITCH ADJUSTMENT/REPLACMENT (For Razor™ 20T) .................................. 19
TROUBLESHOOTING ......................................................................................................................................... 20
RECOVERY WATER SYSTEM ................................................................................................................................. 21
RECOVERY WATER TANK AND VACUUM GRID CLEANING, AND COVER GASKET CHECK ....................... 21
SQUEEGEE CLEANING/CHECK/REPLACEMENT AND SQUEEGEE BLADE REPLACEMENT ...................... 22
VACUUM SYSTEM MOTOR FILTER CLEANING ............................................................................................... 23
VACUUM SYSTEM MOTOR ELECTRICAL INPUT CHECK ................................................................................ 23
VACUUM SYSTEM MOTOR CARBON BRUSH CHECK/REPLACEMENT ........................................................ 24
VACUUM SYSTEM MOTOR DISASSEMBLY/ASSEMBLY .................................................................................. 25
SQUEEGEE SPRING CHECK/REPLACEMENT ................................................................................................. 26
TROUBLESHOOTING ......................................................................................................................................... 27
DRIVE SYSTEM ........................................................................................................................................................28
TRACTION ENABLING MICROSWITCH ADJUSTMENT/REPLACEMENT (For Razor™ 20T).......................... 28
MAXIMUM SPEED POTENTIOMETER DISASSEMBLY/ASSEMBLY(For Razor™ 20T) ................................... 29
DRIVE SYSTEM MOTOR ELECTRICAL INPUT CHECK (For Razor™ 20T) ...................................................... 30
DRIVE SYSTEM MOTOR CARBON BRUSH CHECK AND REPLACEMENT (For Razor™ 20T) ...................... 31
DRIVE SYSTEM MOTOR-DIFFERENTIAL DISASSEMBLY/ASSEMBLY (For Razor™ 20T) ............................. 32
TROUBLESHOOTING (For Razor™ 20T) ........................................................................................................... 33
DRIVE SYSTEM ELECTRONIC BOARD DIAGNOSTIC TABLE (For Razor™ 20T) ........................................... 34
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Razor™ 20 / 20T 9097065000(2)2009-06
3
TABLE OF CONTENTS
OTHER SYSTEMS ....................................................................................................................................................35
SCREW AND NUT TIGHTENING CHECK ........................................................................................................... 35
ELECTRICAL SYSTEM ............................................................................................................................................ 36
MACHINE WORKING HOUR CHECK (with optional hour counter) .................................................................... 36
BATTERY CHARGE AND MAINTENANCE (All models) .....................................................................................36
BATTERY DISASSEMBLY/ASSEMBLY ............................................................................................................... 36
BATTERY TYPE SETTING (WET OR GEL) ....................................................................................................... 37
FUSE CHECK/REPLACEMENT .......................................................................................................................... 38
BRUSH MOTOR ELECTROMAGNETIC SWITCH DISASSEMBLY/ASSEMBLY ................................................ 39
DRIVE SYSTEM ELECTRONIC BOARD DISASSEMBLY/ASSEMBLY (For Razor™ 20T) ................................40
FUNCTION ELECTRONIC BOARD DISASSEMBLY/ASSEMBLY ....................................................................... 41
TROUBLESHOOTING ......................................................................................................................................... 42
COMPONENT LAYOUT (For Razor™ 20) ........................................................................................................... 43
WIRING DIAGRAM (For Razor™ 20) .................................................................................................................. 44
COMPONENT LAYOUT (For Razor™ 20T) ......................................................................................................... 45
WIRING DIAGRAM (For Razor™ 20T) ................................................................................................................ 46
EB1 ELECTRONIC BOARD CONNECTOR PINS ............................................................................................... 47
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GENERAL INFORMATION
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SERVICE MANUAL
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9097065000(2)2009-06 Razor™ 20 / 20T
GENERAL INFORMATION
CONVENTIONS
Forward, backward, front, rear, left or right are intended with reference to the operator’s position, that is to say in driving position
with the hands on the handlebar.
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 KENT Literature Service Department:
KENT Razor™ 20 - Razor™ 20T: User Manual - Form Number 9097063000 –
KENT Razor™ 20 - Razor™ 20T: Spare Parts List - Form Number 9097064000 –
Assembling Instruction – Hour meter Kit - Form Number 9096952000
Assembling Instruction – Extra Pressure Kit - Form Number 909 6759 000
Assembling Instruction – Splash Guard Kit - Form Number 909 6745 000
SAFETY
The following symbols indicate potentially dangerous situations. Always read this information carefully and take all necessary
precautions to safeguard people and property.
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GENERAL INFORMATION
SERVICE MANUAL
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Razor™ 20 / 20T 9097065000(2)2009-06
5
SYMBOLS
DANGER!
It indicates a dangerous situation with risk of death for the operator.
WARNING!
It indicates a potential risk of injury for people or damage to objects.
CAUTION!
It indicates a caution related to important or useful functions.
Pay careful attention to the paragraphs marked by this symbol.
NOTE
It indicates a remark related to important or useful functions.
CONSULTATION
It indicates the necessity to refer to the User Manual before performing any procedure.
GENERAL INSTRUCTIONS
Specic warnings and cautions to inform about potential damages to people and machine are shown below.
DANGER!
This machine must be used by properly trained operators only. Children or disabled people cannot use this –
machine.
Do not wear jewels when working near electrical components. –
Do not work under the lifted machine without supporting it with safety stands. –
Do not operate the machine near toxic, dangerous, ammable and/or explosive powders, liquids or –
vapours: This machine is not suitable for collecting dangerous powders.
Before performing any cleaning, maintenance, repair or replacement procedure disconnect the battery –
connector and remove the ignition key.
Keep the battery far from sparks, ames and incandescent material. During the normal operation explosive –
gases are released.
Battery charging produces highly explosive hydrogen gas. Keep the tanks lifted during battery charging –
and perform this operation in well-ventilated areas and away from naked ames.
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9097065000(2)2009-06 Razor™ 20 / 20T
WARNING!
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. –
Do not allow to be used as a toy. Close attention is necessary when used near children. –
Use only as shown in this Manual. Only Kent recommended accessories must be used. –
Take all necessary precautions to prevent hair, jewels and loose clothes from being caught by the machine –
moving parts.
Do not use the machine on slopes with a gradient exceeding the specications. –
Do not use the machine in particularly dusty areas. –
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. –
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 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 a Dealer or Authorised 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.
Carefully read all the instructions before performing any maintenance/repair procedure. –
Do not wash the machine with direct or pressurised water jets, or with corrosive substances. –
The machine must be disposed of properly, because of the presence of toxic-harmful materials (batteries, –
etc.), which are subject to standards that require disposal in special centres (see the User Manual).
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 charge the batteries if the battery charger cable or the plug are damaged. If the machine is not –
working as it should, has been damaged, left outdoors or dropped into water, return it to the Service Centre.
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 smoke while charging the batteries. –
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.
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SERVICE MANUAL
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Razor™ 20 / 20T 9097065000(2)2009-06
7
TECHNICAL DATA
Modello
Machine height 41.7 in (1.058,5 mm)
Solution tank capacity 11.1 USgal (42 litri)
Recovery water tank capacity 11.1 USgal (42 litri)
Min/max solution ow 0 ÷ 0.4 gpm (0 ÷ 1,6 lt/min)
Solution/clean water autonomy 0,3 gpm (1,1 lt/min) ~ 36 min Media/Average
Front wheel diameter 7,9 in (200 mm)
Front wheel specic pressure on the oor (*) 130 psi (0.9 N/mm
Rear wheel specic pressure on the oor (*) 435.1 psi (3 N/mm
Rear wheel diameter 3.9 in (100 mm)
Vacuum system motor power 0.44 hp (330 W)
Drive system motor power — 0.27 hp (200 W)
Drive speed (variable) —
Max gradeability — 16% - 9°
Working gradeability 2 % - 1°
Sound pressure level (at the operator’s position) (ISO 11201, ISO 4871) (LpA) 66 dB(A) ± 3dB(A)
Sound pressure level (to the machine) (ISO 3744, ISO 4871) (LwA) 84 dB(A)
Vibration level at the operator’s arms (ISO 5349-1) < 98,4 in/ s
Standard batteries WET (2 x 12 V) 24V 105Ah
Standard batteries autonomy ~ 3,2h ~ 2,6h
Battery compartment size (width x length x height) 13.8 x 13.8 x 11.8 in (350 x 350 x 300 mm)
Vacuum system circuit capacity 41.5 in H
Cleaning width 20.9 in (530 mm)
Squeegee width 29.9 in (760 mm)
Machine maximum length 48.3 in (1.228 mm)
Machine width without squeegee 21.3 in (540,8 mm)
Brush diameter 20.9 in (530 mm)
Deck right/left offset 3/- in (75,9/- mm)
Brush distance from the ground (when lifted) 2,36 in (60,1 mm)
Weight without batteries and with empty tanks 178.6 lbs (81 kg) 211.6 lbs (96 kg)
Maximum weight with batteries and full tanks 469.6 lbs (213 kg) 504.5 lbs (229 kg)
Brush motor power 0.64 hp (480 W)
Brush speed 153 rpm
Brush/pad-holder pressure with extra-pressure function turned off 45.2 lbs (20,5 kg)
Brush/pad-holder pressure with extra-pressure function turned on (Optional) - 66,1 lbs (30 kg)
Razor™ 20
(1 brush/padholder,
without drive system)
2
(< 2,5 m/s2)
O (1.055 mm H2O)
2
Razor™ 20T
(1 brush/padholder,
with drive system)
2
)
2
)
da 0 a 2.8 mph
(da 0 a 4,5 km/h)
(*) Machine test have been performed under the following conditions:
Battery maximum size•
Brush and squeegee maximum size•
Full solution tank•
Optional equipment installed•
Wheel weight checked•
Each wheel print checked on cement•
Result expressed as maximum value for both front and rear wheels•
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9097065000(2)2009-06 Razor™ 20 / 20T
1.058,5 mm
540,8 mm
1.228 mm 760 mm
1.058,5 mm
540,8 mm
1.228 mm 760 mm
DIMENSIONS RAZOR™ 20
DIMENSIONS RAZOR™ 20T
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GENERAL INFORMATION
SERVICE MANUAL
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Razor™ 20 / 20T 9097065000(2)2009-06
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/pad cleaning
Tank and vacuum grid with oat cleaning, and cover gasket check
Squeegee blade check and replacement
Solution lter cleaning
Daily, after
machine use
Weekly
Every six
months
Yearly
Battery (WET) uid level check
Vacuum system motor lter cleaning
Screw and nut tightening 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 (For
Razor™ 20T)
(1): And after the rst 8 working hours.
(1)
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9097065000(2)2009-06 Razor™ 20 / 20T
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..
Control panel1.
Handlebar2.
Drive paddle (*)3.
Speed adjuster (*)4.
Battery charger data inspection window5.
Battery charger cable6.
Battery charger cable holder7.
Recovery water drain hose plug8.
Ignition key9.
Squeegee lifting/lowering lever10.
Deck lifting/lowering pedal11.
11a. Pedal position when deck is lifted
11b. Pedal position when deck is lowered
11c. Pedal position when the extra pressure function is on
(if applicable)
Battery connector (red). This connector also works as 12.
EMERGENCY switch, to stop immediately all functions.
Rear steering wheel13.
Front wheels on xed axle (**) Front traction wheels (*)14.
Squeegee vacuum hose15.
Recovery water drain hose16.
Solution drain and level check hose17.
Deck with one brush/pad-holder 18.
Brush/pad-holder 19.
Solution tank20.
Recovery water tank21.
Recovery water tank cover22.
Can holder23.
Solution lter24.
Squeegee25.
Squeegee mounting handwheels26.
Squeegee balance adjusting handwheel27.
Machine straight forward movement adjusting handwheel28.
Machine forward speed adjustment handwheel (**)29.
Recovery water tank cover (opened to be cleaned)30.
Tank cover gasket31.
Cover movable retaining plate32.
Cover xed retaining plate (do not remove!)33.
Serial number plate/technical data34.
Squeegee bumper wheels35.
Vacuum grid with automatic shut-off oat36.
Solution front ller neck37.
Filter38.
Deck bumper wheels39.
Recovery water tank (open)40.
Detergent hose41.
Lifted tank tie rod42.
Vacuum system motor cover43.
Vacuum system motor sound-deadening lter44.
Solution tap45.
Batteries46.
Battery caps47.
Solenoid valve48.
Battery connection diagram49.
Brush/pad-holder and vacuum system switch71.
Brush/pad-holder and vacuum system switch warning light72.
Vacuum system switch73.
Vacuum system switch warning light74.
Brush/pad-holder release switch 75.
Brush/pad-holder release switch warning light76.
Forward/reverse gear paddle (*)77.
Forward/reverse speed adjuster (*)78.
Hour counter (optional)79.
Ignition key (0 - I) (*)80.
Battery charge indicator81.
81a. Charged battery warning light (green)
81b. Semi-discharged battery warning light (yellow)
81c. Discharged battery warning light (red)
Washing water ow control switches82.
82a. Flow increase switch
82b. Flow decrease switch
82c. Washing water ow indicator
Electronic battery charger90.
Lead (WET) or gel (GEL) battery selector 91.
Green warning light (ON: the battery charger is on and 92.
batteries are charged)
Yellow warning light (ON: the battery charger is on and 93.
batteries are semi-discharged)
Red warning light (ON: the battery charger is on and it is 94.
charging the batteries)
(*) Only for Razor™ 20T
(**) Only for Razor™ 20
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Razor™ 20 / 20T 9097065000(2)2009-06
11
MACHINE NOMENCLATURE (Continues)
11
12
10
7
6
5
4
3
921232221
20
18
19
14
45
32
33
31
37
38
2839 29 48 24 4541
30 34
36
13
26 25 15 27 26 35
42 49 40
43
44
46
47
17
16
8
11c
11b
11a
P100135
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9097065000(2)2009-06 Razor™ 20 / 20T
71
82
82b 82c 82a
81a
81b
81c
81
72 74 73 79
RAZOR 20
71
82
82b 82c 82a
81a
81b
81c
81
72 74 73 76 75 79 80 77
78
RAZOR 20T
91
94
93
92
90
MACHINE NOMENCLATURE (Continues)
P100136 P100137
P100136
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SOLUTION SUPPLY SYSTEM
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Razor™ 20 / 20T 9097065000(2)2009-06
13
SOLUTION SUPPLY SYSTEM
E
G
F
E
D
A
C
B
SOLUTION TANK AND SUPPLY SYSTEM CLEANING
Drive the machine to the appointed solution disposal area.1.
• (For Razor™ 20T) Turn the ignition key (80) to “0”.2.
(For Razor™ 20) Turn off the switches (71) and (73).•
Empty the solution tank (20) with the hose (17).3.
Start the machine (as shown in the User Manual) and keep it running until the solution tank is completely empty.4.
• (For Razor™ 20T) Turn the ignition key (80) to “0”.5.
(For Razor™ 20) Turn off the switches (71) and (73).•
Clean the tank (20) with clean water.6.
Start the machine (as shown in the User Manual) and keep it running until the solution tank is completely empty.7.
Clean the solution lter (see the following procedure).8.
SOLUTION FILTER CLEANING
Drive the machine on a level oor.1.
Turn off the switches (71) and (73).2.
Close the solution tap (A) under the machine left lower side. The tap (A) is closed when it is on the position (B) and it is open 3.
when it is on the position (C).
Remove the transparent cover (D), then remove the lter strainer (E). Clean and install them on the support (F).4.
NOTE
The lter strainer (E) must be correctly positioned on the housing (G) of the support (F).
Open the tap (A).5.
P100109
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9097065000(2)2009-06 Razor™ 20 / 20T
F
E
A
B
D
C
SOLENOID VALVE DISASSEMBLY/ASSEMBLY
Disassembly
Remove the brush.1.
Lower the deck by pressing the pedal (11).2.
Remove the screw (A), disconnect the connector (B) and recover the gasket.3.
Disconnect the union (C) from the solenoid valve (D) and recover the gasket.4.
Remove the screws (E).5.
Slightly lift the solenoid valve (D), disconnect the union (F) and recover the gasket.6.
Recover the solenoid valve (D).7.
Assembly
Assemble the components in the reverse order of disassembly.8.
TROUBLESHOOTING
Small amount of solution or no solution reaches the brush
Possible causes:
The solution lter is clogged/dirty (clean).1.
The solution tap is stuck closed (replace).2.
The solenoid valve is broken or there is an open in the electrical connection (replace the solenoid valve/repair the electrical 3.
connection).
There is debris in the solution tank clogging the output hole (clean the tank).4.
There are debris in the solution hoses clogging the ow (clean the hoses).5.
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.
S301522
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BRUSHING SYSTEM
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Razor™ 20 / 20T 9097065000(2)2009-06
15
G
B
A
B
D
BRUSHING SYSTEM
BRUSH/PAD CLEANING
CAUTION!
It is advisable to wear protective gloves when cleaning the brushes/pads because there may be sharp debris.
Remove the brushes/pads, as shown in the User Manual.1.
Clean and wash the brushes/pads with water and detergent.2.
Check that the brush/pads are integral and not excessively worn; otherwise replace them.3.
BRUSH/PAD-HOLDER BRUSH DECK DISASSEMBLY/ASSEMBLY
The machine can be equipped with either the brush/pad-holder deck or the cylindrical brush deck.
Disassembly
Drive the machine on a level oor.1.
Remove the brushes/pad-holders, as shown in the User Manual.2.
Lower the brush/pad-holder deck by pressing the pedal (11). 3.
Disconnect the brush/pad-holder motor electrical connection (A).4.
Remove the screw (B) and disconnect the electrical connection (C).5.
Disconnect the solution hose connection (D).6.
Remove the screws (F), then remove the brush/pad-holder deck (E).7.
Assembly
Assemble the components in the reverse order of disassembly.8.
S301530A
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9097065000(2)2009-06 Razor™ 20 / 20T
B
C
A
BRUSH MOTOR ELECTRICAL INPUT CHECK
WARNING!
This procedure must be performed by qualied personnel only.
Check
If the tank (21) contains recovery water:1.
Drive the machine to the appointed recovery water disposal area.•
(For Razor™ 20T) Turn the ignition key (80) to “0”.•
(For Razor™ 20) Turn off the switches (71) and (73)•
Empty the recovery water tank (21) with the hose (16).•
Drive the machine on a level oor.2.
Remove the brush/pad-holder.3.
Lower the deck by pressing the pedal (11).4.
Turn off the switches (71) and (73).5.
Grasp the handle (41) and carefully lift the tank (40).6.
Apply the amperometric pliers (A) on one cable (B) of the brush motor (C).7.
(For Razor™ 20T). Turn the speed adjuster (84) to idle and turn the ignition key (80) to “I”.8.
Turn on the brush/pad-holder by pressing the switch (71) and check that the motor electrical input is 3 - 4 A at 24 V. Turn off 9.
the brush/pad-holder by pressing the switch (71).
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/pad-holder hub.•
Check the motor carbon brushes (see the procedure in the relevant paragraph).•
Disassemble the motor (see the procedure in the relevant paragraph), and check the condition of all its components.•
If the above-mentioned procedures do not lead to a correct electrical input, the motor must be replaced
(see the procedure in the relevant paragraph).
Reset
Perform steps 3 to 7 in the reverse order.10.
S301533A
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Razor™ 20 / 20T 9097065000(2)2009-06
17
A
A
D
A
D
F
C
A
B
E
BRUSH MOTOR CARBON BRUSH CHECK/REPLACEMENT
Check
If the tank (21) contains recovery water:1.
Drive the machine to the appointed recovery water disposal area.•
(For Razor™ 20T) Turn the ignition key (80) to “0”.•
(For Razor™ 20) Turn off the switches (71) and (73)•
Empty the recovery water tank (21) with the hose (16).•
Drive the machine on a level oor.2.
Remove the brush/pad-holder.3.
Lower the deck by pressing the pedal (11).4.
Turn off the switches (71) and (73).5.
Grasp the handle (41) and carefully lift the tank (40).6.
Disconnect the battery connector (12).7.
Remove dust and dirt from the motor carbon brush support area (A).8.
Disengage the fasteners (B) and (C and remove four carbon brush supports (A). If necessary, disconnect the electrical 9.
connections (D).
Check if the carbon brushes (E) are worn. Replace the carbon brushes when: the contact with the motor armature is 10.
insufcient, the carbon brushes are worn, the carbon brush contact surface is not integral, the thrust spring is broken, etc.
If necessary, disconnect the connections (F) and remove the carbon brushes with their supports (A) to replace them.Replace 11.
the carbon brushes as an assembly.
Reset
Assemble the components in the reverse order of disassembly, and note the following:12.
When connecting the terminals (F), take care of their insulation from the surrounding parts of the frame. •
S301539A
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BRUSHING SYSTEM
ENGLISH
SERVICE MANUAL
18
9097065000(2)2009-06 Razor™ 20 / 20T
D
E
F
C
C
B
A
BRUSH MOTOR DISASSEMBLY/ASSEMBLY
Disassembly
Remove the deck (see the procedure in the relevant paragraph).1.
At the workbench, remove the screw (A) from the deck.2.
Remove the hub assembly (B) with a puller.3.
Remove the screws (C).4.
Remove the reduction unit (D).5.
If necessary, remove the water distribution union (E) and ange (F) from the reduction unit.6.
Assembly
Assemble the components in the reverse order of disassembly.7.
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BRUSHING SYSTEM
SERVICE MANUAL
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Razor™ 20 / 20T 9097065000(2)2009-06
19
B
A
A
D
C
F
KEJ
HG
M
E
G
L
M
H
N
I
BRUSH ENABLING MICROSWITCH ADJUSTMENT/REPLACEMENT (For Razor™ 20T)
Drive the machine on a level oor.1.
Turn the ignition key (80) to “0”.2.
Disconnect the battery connector (12).3.
Remove the screws (A) and move the drive paddle cover (B).4.
Check that the springs (C) operate correctly when releasing the drive paddle (D).5.
If necessary, replace the microswitch (F) according to the following procedure:6.
Mark the position of the connectors (I) and disconnect them from the microswitch.•
Remove the screws (M).•
Remove the microswitch (F).•
Install the new microswitch and fasten it with the screws, then connect the connectors (I).•
Check that the actuator (E) of the microswitch (F) is in the housing (G) of the cam (H) when the drive paddle is released (D). 7.
Also check that the cable contacts (I) are all open (use a tester).
Press the drive paddle (D) and check that the actuator (E), in the positions (J) and (K) activates the microswitch (F) (a clicking 8.
sound must be heard). Also check that the cable contacts (I) are all closed (use a tester).
If necessary, to reach the above-mentioned condition, loosen the screws (L) and adjusting the position of the cam (H),
and/or by loosening the screws (M) and adjusting the position of the microswitch (F). Retighten the screws.
CAUTION!
If the microswitch connections (I) are disconnected, pay attention to reconnect them on the same terminals and
to leave the terminal (N) free.
Assemble the components by performing steps 3 and 4 in the reverse order.9.
Test the brush operation.10.
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BRUSHING SYSTEM
ENGLISH
SERVICE MANUAL
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9097065000(2)2009-06 Razor™ 20 / 20T
TROUBLESHOOTING
ALL BRUSHES DO NOT ROTATE
Possible causes
The brush enabling microswitch is misadjusted or broken (adjust or replace).1.
The wiring harness between microswitch and function electronic board is damaged (repair).2.
The brush motor electromagnetic switch wiring harness is damaged (repair).3.
The function electronic board is damaged (replace).4.
The wiring harness between function electronic board and brush motor electromagnetic switch is damaged (repair).5.
The brush motor electromagnetic switch is damaged (replace).6.
The brush motor fuse is open (replace).7.
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RECOVERY WATER SYSTEM
SERVICE MANUAL
ENGLISH
Razor™ 20 / 20T 9097065000(2)2009-06
21
H
D
E
E
F
G
C
B
J
A
G
L
I
K
RECOVERY WATER SYSTEM
RECOVERY WATER TANK AND VACUUM GRID CLEANING, AND COVER GASKET CHECK
Drive the machine to the appointed recovery water disposal area.1.
• (For Razor™ 20T) Turn the ignition key (80) to “0”.2.
(For Razor) Turn off the switches (71) and (73).•
Lift the cover (A) to washing position (L).3.
Wash with clean water the cover (A), the tank (B) and the vacuum grid with automatic shut-off oat (D).4.
Drain the water in the tank through the hose (16).
If necessary, release the fasteners (E) and open the grid (D), recover the oat (F), clean all the components and then reinstall 5.
them.
Check the tank cover gasket (G) for integrity.6.
NOTE
The gasket (G) creates vacuum in the tank that is necessary for vacuuming the recovery water.
If necessary replace the gasket (G) by removing it from its housing (H). When assembling the new gasket, install the
joint (I) in the rear central area, as shown in the gure.
Check that the bearing surface (J) of the gasket (G) is integral and adequate for the gasket itself.7.
Check the compensation hole (K) for clogging, and clean it if necessary.8.
NOTE
The hole (K), allowing to compensate the air in the cover interspaces, contributes to create vacuum in the tank.
Close the cover (A).9.
P100142
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RECOVERY WATER SYSTEM
ENGLISH
SERVICE MANUAL
22
9097065000(2)2009-06 Razor™ 20 / 20T
SQUEEGEE CLEANING/CHECK/REPLACEMENT AND SQUEEGEE BLADE REPLACEMENT
CAUTION!
It is advisable to wear protective gloves when cleaning the squeegee because there may be sharp debris.
Disassembly and cleaning
Drive the machine on a level oor.1.
• (For Razor™ 20T) Turn the ignition key (80) to “0”.2.
(For Razor™ 20) Turn off the switches (71) and (73).•
Lower the squeegee (25) with the lever (10).3.
Loosen the handwheels (26) and remove the squeegee (25).4.
Disconnect the vacuum hose (15) from the squeegee.5.
Clean the squeegee. Clean the compartments (A) and the hole (B) especially. Check the front blade (C) and the rear blade (D) 6.
for integrity, cuts and tears; otherwise replace them (see the procedure in the following paragraph).
Install the squeegee in the reverse order of removal.7.
Check and replacement
Clean the squeegee, according to the procedure shown in the previous paragraph.1.
Check that the edges (E) of the front blade (C) and the edges (F) of the rear blade (D) lay down on the same level, along their 2.
length; otherwise adjust their height according to the following procedure:
Release the tie rod (G), disengage the fasteners (M) and adjust the rear blade (D), then tighten the wing nuts, or engage •
the fasteners, and then engage the tie rod.
Loosen the handwheels (I) and adjust the front blade (C); then tighten the handwheels.•
Check the front blade (C) and rear blade (D) for integrity, cuts and tears; if necessary replace them according to the following 3.
procedure. Check that the front corner (J) of the rear blade is not worn; otherwise, overturn the blade to replace the worn
corner with an integral one. If the other corners are worn too, replace the blade according to the following procedure:
Release the tie rod (G), remove the wing nuts (H) or disengage the fasteners (M), remove the retaining strip (K), then •
replace/overturn the rear blade (D). Then install the blade in the reverse order of removal.
Unscrew the handwheels (I) and remove the retaining strip (L), then replace the front blade (C). Install the blade in the •
reverse order of removal.
After the blade replacement (or overturning), adjust the height as shown in the previous step.
Connect the vacuum hose (15) to the squeegee.4.
Install the squeegee (25) and screw down the handwheels (26).5.
If necessary, adjust the squeegee balance adjusting handwheel (27).6.
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RECOVERY WATER SYSTEM
SERVICE MANUAL
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Razor™ 20 / 20T 9097065000(2)2009-06
23
VACUUM SYSTEM MOTOR FILTER CLEANING
B
A
Disassembly and cleaning
If the tank (21) contains recovery water:1.
Drive the machine to the appointed recovery water disposal area.•
(For Razor™ 20T) Turn the ignition key (80) to “0”.•
(For Razor™ 20) Turn off the switches (71) and (73).•
Empty the recovery water tank (21) with the hose (16).•
Drive the machine on a level oor.2.
• (For Razor™ 20T) Turn the ignition key (80) to “0”.3.
(For Razor™ 20) Turn off the switches (71) and (73).•
Grasp the handle (41) and carefully lift the tank (40).4.
Remove the vacuum system motor lter (44) and clean it with water and compressed air.5.
Install the lter (44).6.
Assembly
Assemble the components in the reverse order of disassembly.7.
VACUUM SYSTEM MOTOR ELECTRICAL INPUT CHECK
WARNING!
This procedure must be performed by qualied personnel only.
If the tank (21) contains recovery water:1.
Drive the machine to the appointed recovery water disposal area.•
(For Razor™ 20T) Turn the ignition key (80) to “0”.•
(For Razor™ 20) Turn off the switches (71) and (73).•
Empty the recovery water tank (21) with the hose (16).•
Drive the machine on a level oor.2.
• (For Razor™ 20T) Turn the ignition key (80) to “0”.3.
(For) Turn off the switches (71) and (73).•
Disconnect the battery connector (12).4.
Grasp the handle (41) and carefully lift the tank (40).5.
Apply the amperometric pliers (A) on one cable (B) of the batteries.6.
- (For Razor™ 20T) Turn the ignition key (80) to “I”.7.
- Turn on the vacuum system by pressing the switch (73) and check that the motor electrical input is 16 - 19 A at 24 V. 8.
Turn off the vacuum system by pressing the switch (73).
Remove the amperometric pliers (B).
If the electrical input exceeds the specications, check the motor carbon brushes
(see the procedure in the relevant paragraph).
If necessary, disassemble the vacuum system motor (see the procedure in the relevant paragraph),
and check the condition of all its components.
If the above-mentioned procedures do not lead to a correct electrical input, the motor must be replaced
(see the procedure in the relevant paragraph).
Perform steps 4 and 5 in the reverse order.9.
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RECOVERY WATER SYSTEM
ENGLISH
SERVICE MANUAL
24
9097065000(2)2009-06 Razor™ 20 / 20T
VACUUM SYSTEM MOTOR CARBON BRUSH CHECK/REPLACEMENT
Remove the vacuum system motor (see the procedure in the relevant paragraph).1.
At the workbench, remove the cover (A) (press-tted) from the vacuum system motor (B).2.
Remove the screws (C).3.
Disconnect the electrical connections (D).4.
Remove the carbon brushes (E).5.
Check the carbon brushes for wear. Replace the carbon brushes when: the contact with the motor armature is insufcient, the 6.
carbon brushes are worn, the carbon brush contact surface is not integral, the thrust spring is broken, etc.
If necessary, replace the carbon brushes. Replace the carbon brushes as an assembly.7.
Assemble the components in the reverse order of disassembly.8.
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RECOVERY WATER SYSTEM
SERVICE MANUAL
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Razor™ 20 / 20T 9097065000(2)2009-06
25
VACUUM SYSTEM MOTOR DISASSEMBLY/ASSEMBLY
L
K
J
I
E
H
G
F
A
A
B
C
D
L
Disassembly
If the tank (21) contains recovery water:1.
Drive the machine to the appointed recovery water disposal area.•
(For Razor™ 20T) Turn the ignition key (80) to “0”.•
(For Razor™ 20) Turn off the switches (71) and (73).•
Empty the recovery water tank (21) with the hose (16).•
Drive the machine on a level oor.2.
• (For Razor™ 20T) Turn the ignition key (80) to “0”.3.
(For Razor) Turn off the switches (71) and (73).•
Disconnect the battery connector (12).4.
Grasp the handle (41) and carefully lift the tank (40).5.
Remove the screws (A) and recover the washers.6.
Remove the motor cover (B).7.
Remove the lter (C) and the gasket (D).8.
Remove the motor (E), the sound-deadening pipe (F) and the sound-deadening panel (G).9.
Disconnect the electrical connector (H) of the motor (E).10.
Check the efciency of the gasket (I) and, if necessary, replace it.11.
Assembly
Assemble the components in the reverse order of disassembly, and note the following:12.
If necessary, clean the lter (C) before assembling it (see the procedure in the relevant paragraph).•
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RECOVERY WATER SYSTEM
ENGLISH
SERVICE MANUAL
26
9097065000(2)2009-06 Razor™ 20 / 20T
A
B
C
D
E
G
H
F
SQUEEGEE SPRING CHECK/REPLACEMENT (All models, with aluminium squeegee)
Check
Drive the machine on a level oor.1.
• (For Razor™ 20T) Turn the ignition key (80) to “0”.2.
(For Razor™ 20) Turn off the switches (71) and (73).•
Check that the springs (A) and (B) push the squeegee (C) on the oor correctly.3.
If necessary, disassemble and replace the springs according to the following procedure.4.
Disassembly
Remove the squeegee (see the procedure in the relevant paragraph).5.
Lift the deck by pressing the pedal (11).6.
Grasp the handlebar (2) and lower the front part of the machine.7.
Remove the cotter pin (D).8.
Disengage the end (E) of the left spring (F) from the housing (G).9.
Remove the left spring (F).10.
Repeat steps 8, 9 and 10 for the right spring (H).11.
Assembly
Assemble the springs by performing steps 5 to 11 in the reverse order.12.
S301557
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RECOVERY WATER SYSTEM
SERVICE MANUAL
ENGLISH
Razor™ 20 / 20T 9097065000(2)2009-06
27
TROUBLESHOOTING
The vacuum system motor does not turn on
The wiring harness between the function electronic board and the vacuum system relay is damaged or short-circuited (check 1.
and repair).
The vacuum system relay is damaged (replace).2.
The wiring harness between relay and motor is damaged (repair).3.
The vacuum system fuse is open (replace).4.
The vacuum system motor carbon brushes are worn (replace).5.
The vacuum system motor is faulty (check the electrical input).6.
The function electronic board is damaged (replace).7.
Dirty water vacuuming is insufcient or there is no vacuuming
Possible causes:
The vacuum grid with automatic shut-off oat is activated because the recovery water tank is full (empty the recovery water 1.
tank).
The vacuum grid with automatic shut-off oat is dirty, or the vacuum pre-lter is dirty (clean).2.
The tank cover is not correctly positioned (adjust).3.
The tank cover gasket is not efcient, or the compensating hole is clogged (repair/clean).4.
The vacuum system motor lter is dirty (clean).5.
The squeegee or the vacuum hose is clogged or damaged (clean or repair/replace).6.
The vacuum gaskets are damaged or do not match perfectly (repair or replace).7.
The squeegee leaves lining on the oor or does not collect water
Possible causes:
There is debris under the blade (remove).1.
The squeegee blade edges are torn or worn (replace).2.
The squeegee is not balanced (adjust it with the relevant handwheel).3.
(For aluminium squeegee) The squeegee springs are not efcient (check/replace)4.
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DRIVE SYSTEM
ENGLISH
SERVICE MANUAL
28
9097065000(2)2009-06 Razor™ 20 / 20T
B
A
A
D
C
F
I
N
H
L
E
G
KEJ
HG
DRIVE SYSTEM
TRACTION ENABLING MICROSWITCH ADJUSTMENT/REPLACEMENT (For Razor™ 20T)
Drive the machine on a level oor.1.
Turn the ignition key (80) to “0”.2.
Disconnect the battery connector (12).3.
Remove the screws (A) and move the drive paddle cover (B).4.
Check that the springs (C) operate correctly when releasing the drive paddle (D).5.
If necessary, replace the microswitch (F) according to the following procedure:6.
Mark the position of the connectors (I) and disconnect them from the microswitch.•
Remove the screws (M).•
Remove the microswitch (F).•
Install the new microswitch and fasten it with the screws, then connect the connectors (I).•
Check that the actuator (E) of the microswitch (F) is in the position (G) of the cam (H) when the drive paddle is released (D). 7.
Press the drive paddle (D) and check that the actuator (E), in the position (K) doesn’t activate the microswitch (F). Also check 8.
that the cable contacts (I) are all open (use a tester).
Press the drive paddle (D) and check that the actuator (E), in the position (J) activates the microswitch (F) (a clicking sound 9.
must be heard). Also check that the cable contacts (I) are all closed (use a tester).
If necessary, to reach the above-mentioned condition, loosen the screws (L) and adjusting the position of the cam (H),
and/or by loosening the screws (M) and adjusting the position of the microswitch (F). Retighten the screws.
CAUTION!
If the microswitch connections (I) are disconnected, pay attention to reconnect them on the same terminals and
to leave the terminal (N) free.
Assemble the components by performing steps 3 and 4 in the reverse order.10.
Test the traction operation.11.
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DRIVE SYSTEM
SERVICE MANUAL
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Razor™ 20 / 20T 9097065000(2)2009-06
29
E
D
D
B
A
B
C
L
G
F
I
H
E
MAXIMUM SPEED POTENTIOMETER DISASSEMBLY/ASSEMBLY (For Razor™ 20T)
Disassembly
Disconnect the battery connector (12).1.
Operating inside the hole (A), loosen the threaded dowel and remove the maximum speed adjuster knob (B).2.
Unscrew the potentiometer mounting nut (C).3.
Remove the screws (D) and move the cover (E).4.
Cut the fastening clamp (F) and disconnect the potentiometer connector (G).5.
Open the clamp (H).6.
Remove the potentiometer with the relevant wiring harness (I).Check and replacement7.
Assembly
Assemble the components in the reverse order of disassembly, and note the following:8.
Fasten the knob (B) with the potentiometer shaft (L) completely turned to the left and the hole (A) in the lower centre part of •
the panel as shown in the gure.
Test the drive system and the maximum speed change.9.
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DRIVE SYSTEM
ENGLISH
SERVICE MANUAL
30
9097065000(2)2009-06 Razor™ 20 / 20T
C
A
E
B
D
DRIVE SYSTEM MOTOR ELECTRICAL INPUT CHECK (For Razor™ 20T)
WARNING!
This procedure must be performed by qualied personnel only and with the help of an assistant.
Check that the batteries are completely charged, otherwise charge them as shown in the User Manual.1.
If the tank (21) contains recovery water:2.
Drive the machine to the appointed recovery water disposal area.•
Turn the ignition key (80) to “0”.•
Empty the recovery water tank (21) with the hose (16).•
Drive the machine on a level oor.3.
Lower the deck by pressing the pedal (11).4.
Under the left side the machine, install a suitable jack (C) in the position (A), and slightly lift the machine so that the left wheel 5.
(C) can turn freely, without touching the oor or the jack.
WARNING!
While performing this procedure, pay attention to the rotation of the driving wheel (C).
Apply the amperometric pliers (D) on one cable (E) of the drive system motor.6.
Turn the ignition key (80) to “I”.7.
Turn the speed adjuster (84) to the maximum speed.8.
With the help of an assistant who rmly keeps the machine by the handlebar, push the drive paddle (3) completely forward and 9.
check that the electrical input is 1.5 - 2.5 A at 24 V. Release the drive paddle (3). Turn the ignition key (80) to “0” and remove
the amperometric pliers (D).
If the electrical input is higher, perform the following procedures to detect and correct the abnormal input:
Check if there is dust or debris preventing the component rotation. The lifted wheel (C) must turn freely whit a slight •
resistance of the differential.
If necessary, disassemble the motor-differential (see the procedure in the relevant paragraph) then check for hub correct •
alignment and bearing smooth running.
If the above-mentioned procedures do not lead to a correct electrical input, the motor must be replaced
(see the procedure in the relevant paragraph).
Perform steps 4 and 5 in the reverse order.10.
S301562
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DRIVE SYSTEM
SERVICE MANUAL
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Razor™ 20 / 20T 9097065000(2)2009-06
31
B
DRIVE SYSTEM MOTOR CARBON BRUSH CHECK AND REPLACEMENT (For Razor™ 20T)
Drive the machine to the appointed disposal area, and empty the recovery water tank (21) with the hose (16).1.
Place the machine on a hoisting system (if available).2.
Otherwise, drive the machine on a level oor.
Turn the ignition key (80) to “0”.3.
Disconnect the battery connector (12).4.
Operating on the left side of the machine, clean the drive system motor (B) in the area of the covers (A).5.
Unscrew the covers (A) and remove the carbon brushes (C).6.
Check if the carbon brushes (C) are worn. Replace the carbon brushes when: the contact with the motor armature is 7.
insufcient, the carbon brushes are worn, the carbon brush contact surface is not integral, the thrust spring is broken, etc.
If necessary, replace the carbon brushes. Replace the carbon brushes as an assembly.
Assemble the components in the reverse order of disassembly.8.
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DRIVE SYSTEM
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SERVICE MANUAL
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9097065000(2)2009-06 Razor™ 20 / 20T
B
A
C
D
F
E
E
F
F
F
I
C
D
G
J
I
DRIVE SYSTEM MOTOR-DIFFERENTIAL DISASSEMBLY/ASSEMBLY (For Razor™ 20T)
Disassembly
If the tank (21) and/or (20) contains recovery water:1.
Drive the machine to the appointed disposal area.•
Turn the ignition key (80) to “0”.•
Empty the recovery water tank (21) with the hose (16).•
Empty the solution tank (20) with the hose (17).•
Remove the squeegee (see the procedure in the relevant paragraph).2.
Remove the batteries (see the procedure in the relevant paragraph).3.
Prepare an hoisting system (A) on which the machine is to be laid on one side. Place a panel (B) on the hoisting system to 4.
avoid damaging the machine.
With the help of an assistant, tilt the machine on one side and lay it on the panel (B).5.
Remove the screws (C), then remove the wheels (D) and recover the keys (E).6.
Remove the screws (F) on both sides.7.
Disconnect the connectors (G) of the drive system motor.8.
If necessary, remove the spacers (I) and the retaining rings.9.
Remove the motor-differential (J).10.
Assembly
Assemble the components in the reverse order of disassembly.11.
P100155K
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DRIVE SYSTEM
SERVICE MANUAL
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Razor™ 20 / 20T 9097065000(2)2009-06
33
TROUBLESHOOTING (For Razor™ 20T)
Open circuit
Possible causes:
There are bulky debris or cords under the machine or around the driving wheels (remove the debris).1.
The motor is damaged (check the motor electrical input).2.
The oor gradient is excessive (do not use the drive system on slopes with a gradient exceeding the specications).3.
There is a short circuit in the drive system electronic board harness (repair).4.
The drive system electronic board is faulty (replace).5.
The machine does not move
Possible causes:
The battery voltage is too low (charge the batteries).1.
The drive paddle potentiometer is misadjusted or broken (adjust or replace).2.
The speed adjuster is broken (replace).3.
The drive system enabling microswitch is misadjusted or broken (adjust or replace).4.
The drive system electronic board is faulty (replace).5.
There is an open in the fuse (repair).6.
The wiring harness is damaged (repair).7.
The drive system motor carbon brushes are worn (replace).8.
The drive system motor is faulty (replace).9.
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DRIVE SYSTEM
ENGLISH
SERVICE MANUAL
34
9097065000(2)2009-06 Razor™ 20 / 20T
A
B
TROUBLESHOOTING (For Razor™ 20T) (Continues)
DRIVE SYSTEM ELECTRONIC BOARD DIAGNOSTIC TABLE
No. of ashes (*) Meaning Action
1
2 Faulty speed potentiometer Check both speed potentiometers
3 Faulty speed potentiometer Check both speed potentiometers
4
5 Thermal protection Check the drive system motor electrical input
6 Faulty drive system electronic board Replace the drive system electronic board
7 Overcurrent output
8 Missing power connection
9 Low battery voltage Charge the batteries
10 High battery voltage Check the batteries
11 Overload output Check the drive system motor electrical input
12 (Not applicable) --
13 Ignition key wrong sequence
14 Software error Replace the drive system electronic board (B)
Drive system/brush enabling microswitch
closed when starting the machine
Speed potentiometer off neutral when
starting the machine
(*) Flashing of led (A) of the drive system electronic board (B)
Check the microswitch adjustment
Check the speed potentiometer adjustment
Check the drive system motor electrical input; if the electrical input is
normal, replace the drive system electronic board
Check the drive system fuse and the drive system electronic board
wiring harness; if the fuse and the wiring harness are normal, replace the
drive system electronic board
Check for false contacts in the ignition key – function electronic board –
drive system electronic board circuit (orange cables)
S301565
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OTHER SYSTEMS
SERVICE MANUAL
ENGLISH
Razor™ 20 / 20T 9097065000(2)2009-06
35
OTHER SYSTEMS
SCREW AND NUT TIGHTENING CHECK
Drive the machine to the appointed disposal area, and empty the recovery water tank (21) with the hose (16).1.
Place the machine on a hoisting system (if available).2.
Otherwise, drive the machine on a level oor.
• (For Razor™ 20T) Turn the ignition key (80) to “0”.3.
(For Razor™ 20) Turn off the switches (71) and (73).•
Grasp the handle (41) and carefully lift the tank (40).4.
Check:5.
Tightening of mounting screws and nuts;•
Correct position of fasteners;•
Visible faults in the components;•
Leaks of uids.•
Carefully lower the tank (40).6.
Remove the machine from the hoisting system.7.
Page 36
ELECTRICAL SYSTEM
ENGLISH
SERVICE MANUAL
36
9097065000(2)2009-06 Razor™ 20 / 20T
A
B
C
A
B
ELECTRICAL SYSTEM
MACHINE WORKING HOUR CHECK (optional)
(For Razor™ 20T) Turn the ignition key (80) to “I”.1.
Press the vacuum system switch (73) and read on the hour counter (79) the total number of working hours (scrubbing/drying) 2.
performed by the machine.
Turn off the vacuum system by pressing the switch (73).3.
(For Razor™ 20T) Turn the ignition key (80) to “0”.4.
BATTERY CHARGE AND MAINTENANCE
See the User Manual.
BATTERY DISASSEMBLY/ASSEMBLY
Disassembly
If the tank (21) contains recovery water:1.
Drive the machine to the appointed recovery water disposal area.•
(For Razor™ 20T) Turn the ignition key (80) to “0”.•
(For Razor) Turn off the switches (71) and (73).•
Empty the recovery water tank (21) with the hose (16).•
Drive the machine on a level oor.2.
• (For Razor™ 20T) Turn the ignition key (80) to “0”.3.
(For Razor™ 20) Turn off the switches (71) and (73).•
Disconnect the battery connector (12).4.
Grasp the handle (41) and carefully lift the tank (40).5.
Disconnect the cables (A) from the battery terminals.6.
Remove the battery shims, if present.7.
Carefully remove the batteries (B).8.
Assembly
Assemble the batteries in the reverse order of disassembly, referring to the installation diagram (C), and note the following:9.
Set the machine according to the type of batteries installed (WET or GEL) as shown in the relevant paragraph.•
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SERVICE MANUAL
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Razor™ 20 / 20T 9097065000(2)2009-06
37
C
A
A
B
BATTERY TYPE SETTING (WET OR GEL) (For Razor™ 20)
Set the electronic board of the machine and of the battery charger according to the type of batteries installed (WET or GEL) as
shown below:
Machine setting
Press the switch (71) or (73) and pay attention to the following in the very rst seconds of machine operation:1.
If the green warning light (81a) is ashing, the machine is set to GEL.•
If the red warning light (81c) is ashing, the machine is set to WET.•
If the setting is to be changed, perform the following procedure.2.
Make sure that the switches (71) and (73) are turned off.3.
Press and hold the switches (71) and (73) at the same time.4.
Release the switches (71) and (73) at least 8 seconds after starting the machine.5.
Within three seconds, press the switch (73) again for a few seconds and check that the warning light for the required setting is 6.
ashing (as shown in step 1).
Battery charger setting
Remove the battery charger data inspection window screws (A).7.
Remove the window (B).8.
Turn the battery charger selector (C) to WET position for lead batteries, or to GEL position for gel batteries.9.
Install the window (B) and tighten the screws (A).10.
BATTERY TYPE SETTING (WET OR GEL) (For Razor™ 20T)
Set the electronic board of the machine and of the battery charger according to the type of batteries installed (WET or GEL) as
shown below:
Machine setting
Turn the ignition key (80) to “I” position and pay attention to the following in the very rst seconds of machine operation:1.
If the green warning light (81a) is ashing, the machine is set to GEL.•
If the red warning light (81c) is ashing, the machine is set to WET.•
If the setting is to be changed, perform the following procedure.2.
Turn off the machine by turning the ignition key (80) to “0”.3.
Press and hold the switches (71) and (73) at the same time, then turn the ignition key (80) to “I”.4.
Release the switches (71) and (73) at least 8 seconds after starting the machine.5.
Within three seconds, press the switch (73) again for a few seconds and check that the warning light for the required setting is 6.
ashing (as shown in step 1).
Battery charger setting
Remove the battery charger data inspection window screws (A).7.
Remove the window (B).8.
Turn the battery charger selector (C) to WET position for lead batteries, or to GEL position for gel batteries.9.
Install the window (B) and tighten the screws (A).10.
S301567A
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9097065000(2)2009-06 Razor™ 20 / 20T
F
G
H
A
A
B
A
A
J
I
D
K
E
C
FUSE CHECK/REPLACEMENT
Disconnect the battery connector (12).1.
Move aside the recovery water drain hose (16).2.
Remove the battery charger cable (I) from the cable holder (J).3.
Remove the screws (A) and carefully move aside the panel (B) by disengaging the grommet (K) from its housing on the panel 4.
(B).
Check/replace the following fuses:5.
(C) - F1 fuse, deck: (40 A)
(D) - F2 fuse, vacuum system: (30 A)
(E) - F3 fuse, drive system: (30 A) (*)
(F) - F4 fuse, signal circuits: (3 A)
(G) - F5 fuse, brush/pad-holder release: (20 A) (*)
(H) - F6 fuse, pumps: (3 A) (*)
(*) Only for Razor™ 20T
Perform steps 1 to 4 in the reverse order.6.
S301569K
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Razor™ 20 / 20T 9097065000(2)2009-06
39
B
D
E
F
A
A
B
A
A
C
L
N
J
L
K
K
M
H
G
J
BRUSH MOTOR ELECTROMAGNETIC SWITCH DISASSEMBLY/ASSEMBLY
Disassembly
Disconnect the battery connector (12).1.
Move aside the recovery water drain hose (16).2.
Remove the battery charger cable (6) from the cable holder (7).3.
Remove the screws (A) and carefully move aside the panel (B) by disengaging the cable grommet (C) from its housing on the 4.
panel (B).
Disconnect the connectors (D), (E), (F), and remove the panel (B).5.
Disconnect the terminals (G) and (H) from the electromagnetic switch (J). Disconnect also the terminals (I), which are present 6.
only on the models with drive system.
Remove the screws (K) and move the electrical panel (L) by disengaging it from the lower fastener (M).7.
Remove the screws (N) on the rear side of the electrical panel (L), then remove the electromagnetic switch (J).8.
Assembly
Assemble the components in the reverse order of disassembly. 9.
S301569K S301572
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40
9097065000(2)2009-06 Razor™ 20 / 20T
B
D
E
F
A
A
B
A
A
C
L
L
J
J
I
I
H
G
G
K
DRIVE SYSTEM ELECTRONIC BOARD DISASSEMBLY/ASSEMBLY (For Razor™ 20T)
Disassembly
Disconnect the battery connector (12).1.
Move aside the recovery water drain hose (16).2.
Remove the battery charger cable (6) from the cable holder (7).3.
Remove the screws (A) and carefully move aside the panel (B) by disengaging the cable grommet (C) from its housing on the 4.
panel (B).
Disconnect the connectors (D), (E), (F), and remove the panel (B).5.
Disconnect the connectors (G) of the drive system electronic board (H).6.
Remove the screws (I) and move the electrical panel (J) by disengaging it from the lower fastener (K).7.
Remove the screws (L) on the rear side of the electrical panel (J), then remove the drive system electronic board (H).8.
Assembly
Assemble the components in the reverse order of disassembly. 9.
S301573A S301574A
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Razor™ 20 / 20T 9097065000(2)2009-06
41
FUNCTION ELECTRONIC BOARD DISASSEMBLY/ASSEMBLY
B
D
E
F
G
H
G
G
G
A
A
B
A
A
C
Disassembly
Disconnect the battery connector (12).1.
Move aside the recovery water drain hose (16).2.
Remove the battery charger cable (6) from the cable holder (7).3.
Remove the screws (A) and carefully move aside the panel (B) by disengaging the cable grommet (C) from its housing on the 4.
panel (B).
Disconnect the connectors (D), (E), (F), and remove the panel (B).5.
On the panel, remove the screws (G), then remove the function electronic board (H).6.
Assembly
Assemble the components in the reverse order of disassembly. 9.
S301575K
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42
9097065000(2)2009-06 Razor™ 20 / 20T
TROUBLESHOOTING
See the previous chapters related to the use of the electrical system.
Other possible causes:
The batteries are discharged or the connections are not efcient (charge the batteries or clean the connections).1.
The batteries are broken (check the battery no-load voltage).Assembly2.
NOTE
A fault in the battery charger and relevant connections can affect the machine operation.
The battery charger is broken (replace).3.
There is an open in the fuses (replace).4.
The harness is cut, pressed or short-circuited (repair).5.
Error codes indicated by LEDs (81a - 81b - 81c):6.
Flashes Meaning Action
Green, yellow and red LED
ashing simultaneously.
Problem related to brush motor overload.
Perform checks shown in BRUSH MOTOR
ELECTRICAL INPUT CHECK.
If check results are negative, check the F1
fuse for integrity and its nut tightness.
Red LED ashing. The batteries are discharged.
Charge the batteries.
If the problem persists, replace them.
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43
M2
BAT
EV1
C1
HM
CH
F4
ES2
F1
C2
EB1
ES1
F2
CS
M1
COMPONENT LAYOUT - Razor™ 20
Key
BAT 24 V battery
C1 Battery connector
C2 Battery charger connector
CH Battery charger
CS Deck connector
EB1 Function electronic board
ES1 Brush electromagnetic switches
ES2 Vacuum system relay
EV1 Water solenoid valve
F1 Deck fuse
F2 Vacuum system fuse
F4 Signal circuit fuse
HM Hour counter (optional)
M1 Brush/pad-holder motor
M2 Vacuum system motor
S301575A
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44
9097065000(2)2009-06 Razor™ 20 / 20T
WIRING DIAGRAM - Razor™ 20
Key
BAT 24 V battery
C1 Battery connector
C2 Battery charger connector
CH Battery charger
CS Deck connector
EB1 Function electronic board
ES1 Brush electromagnetic switches
ES2 Vacuum system relay
EV1 Water solenoid valve
F1 Deck fuse
F2 Vacuum system fuse
F4 Signal circuit fuse
HM Hour counter (optional)
M1 Brush/pad-holder motor
M2 Vacuum system motor
Colour codes
BK Black
BU Blue
BN Brown
GN Green
GY Grey
OG Orange
PK Pink
RD Red
VT Violet
WH White
YE Yellow
S301575A
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Razor™ 20 / 20T 9097065000(2)2009-06
45
M2
BAT
EV1
C1
F4
ES2
F1
C2
EB1
CS
M1
F2
ES1
RV2
HM
K1
SW2
SW1
F5
F6
EB2
F3
CH
COMPONENT LAYOUT - Razor™ 20T
Key
BAT 24 V battery
C1 Battery connector
C2 Battery charger connector
CH Battery charger
EB1 Function electronic board
EB2 Drive system electronic board
ES1 Brush electromagnetic switches
ES2 Vacuum system relay
EV1 Water solenoid valve
F1 Deck fuse
F2 Vacuum system fuse
F3 Drive system fuse
F4 Signal circuit fuse
F5 Brush/pad-holder release fuse
F6 Pump fuse
HM Hour counter (optional)
K1 Ignition key
M1 Brush/pad-holder motor
M2 Vacuum system motor
M3 Drive system motor
RV2 Maximum speed potentiometer
SW1 Brush/drive system enabling switch
SW2 Reverse gear switch
S301579K
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46
9097065000(2)2009-06 Razor™ 20 / 20T
(**)
F1
ES1
BN
BU
BK
C1
BK
C2.2
BK BK
J4
J1.8
BU
BU
M5
WH
J3.3
J3.4
J2.2
EV1
BN
J2.1
J3.2
OG-BK
J1.10
RD-BK
BU-BK
J1.9
J3.5
J3.6
CSC1
CSC2
BK
CH
BAT
C2.1
OG
BU
HM
F6
F5
F4
ES2
YE
M4
BN
85BN86
J3.1
J1.13
J1.12
BN-BK
ES1
BU
1
2
J1.11
J1.4
GY
J1.14
EB1
J1.1
RD
OG
K1
J1.6J1.6
J1.2
GN-BK
J1.15
J1.3
J1.5
BU
VT
RD
(2)
(1)
SW1
RD
RD
C1
C2.4
C2.3
C2.4
C2.3
M1
RD RD
BK BK
CSC1
CSC2
87
ES2
30
RV2
J1.4
(4)
WH
-B
WH
(6)
BU
(5)
J1.3
RD
J1.1
GN-BK
VT-BK
J1.12
J1.15
EB2
+B
M1 M2
M3
RD GY
M2
RD
F3
BN
F2
RD RD
(3)
SW2
YE-BK
J1.2
+
-
-
+
(*)
WIRING DIAGRAM - Razor™ 20T
Key
BAT 24 V battery
C1 Battery connector
C2 Battery charger connector
CH Battery charger
EB1 Function electronic board
EB2 Drive system electronic board
ES1 Brush electromagnetic switches
ES2 Vacuum system relay
EV1 Water solenoid valve
F1 Deck fuse
F2 Vacuum system fuse
F3 Drive system fuse
F4 Signal circuit fuse
F5 Brush/pad-holder release fuse
F6 Pump fuse
HM Hour counter (optional)
K1 Ignition key
M1 Brush/pad-holder motor
M2 Vacuum system motor
M3 Drive system motor
RV2 Maximum speed potentiometer
SW1 Brush/drive system enabling switch
SW2 Reverse gear switch
Colour codes
BK Black
BU Blue
BN Brown
GN Green
GY Grey
OG Orange
PK Pink
RD Red
VT Violet
WH White
YE Yellow
S301575A
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47
EB1 ELECTRONIC BOARD CONNECTOR PINS
456
123
321
J3 J5
2
1
J2
910111213141516
1 2345678
J1
Electronic board for Razor™ 20
Supplier Ref. Ref. Rev. Spec.
7CFBA600 Till S/N 072115094
7CFBA606 current version
Electronic board for Razor™ 20T
Supplier Ref. Ref. Rev. Spec.
7CFBA700 Till S/N 072014255
7CFBA706 current version
S301581
CONNECTORS (on B side card)
J1: MOLEX MINIFIT type 16 ways vertical
Electronic
PIN Description
1 Electronic board power supply +
2 Ignition key circuit power supply
3 Auxiliary signal power supply OUT 24V always, with connected batteries SW1 SW2
4 Hour counter power supply OUT 0V with Vacuum function activated HM
Drive system electronic board
5
enabling
6 Return from ignition key IN 24V with key on “I” K1
7 - - - -
8 Electronic board power supply - IN 0V always, with connected batteries BAT
9 Brush fuse voltage drop reading + IN 0 ÷ 50mV nearly proportional to the current in brush motors F1
10 Brush fuse voltage drop reading - IN 0V always, with connected batteries F1
Brush electromagnetic switch power
11
supply -
12 Vacuum system relay power supply - OUT 0V with Vacuum function activated ES2
board
in/out
BOARD
IN/OUT
OUT 24V with key on “I” EB2.J1.15
OUT 0V with brush function activated ES1
24V always, with connected batteries BAT
24V always, with connected batteries K1
V ref. Connected to
Electromagnetic switch/relay power
13
supply +
14 Brush motor braking circuit IN 24V with brush function deactivated ES1.NC
15 Drive system/brush enabling (panel) IN 24V with pressed paddle SW1
16 -
OUT 24V with key on “I” ES1-ES2
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ELECTRICAL SYSTEM
EB1 ELECTRONIC BOARD CONNECTOR PINS 6 (continues)
J2: MOLEX MINIFIT type 2 ways vertical
Electronic
PIN Description
1 Solenoid valve power supply + OUT 24V with key on “I” EV1
board
in/out
V ref. Connected to
2 Solenoid valve power supply - OUT
0V pulsed, according to water ow setting, only with paddle
pressed and brush function activated
J3: MOLEX MINIFIT type 6 ways vertical (only version CFBA706)
Electronic
PIN Description
1 Water pump power supply + OUT 24V with key on “I”
2 Water pump power supply - OUT
3 Solution pump power supply + OUT 24V with key on “I” M5
4 Solution pump power supply - OUT
5 B-type deck conguration return IN 24V always with cylindrical brush deck installed CSC.2
6 Auxiliary power supply + OUT 24V with key on “I” CSC.1
board
in/out
V ref. Connected to
0V pulsed, according to water ow setting, only with paddle
pressed and brush function activated
0V pulsed as J3.2, when active squared wave with different
frequencies according to the setting solution ow
EV1
M4 (only for
CFBA706)
M4 (only for
CFBA706)
M5
48
9097065000(2)2009-06 Razor™ 20 / 20T
Page 49
Page 50
14600 21st Avenue North
Plymouth, MN, 55447-3408
www.kenteuroclean.com
Phone: 800-334-1083
Fax: 866-261-4779
©2009 Printed in Hungary
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