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ELECTRICAL SYSTEM

SERVICE MANUAL

ENGLISH

Razor™ 20 / 20T

9097065000(2)2009-06

EB1 ELECTRONIC BOARD CONNECTOR PINS

S301581

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

CONNECTORS

(on B side card)

J1: MOLEX MINIFIT type 16 ways vertical

PIN

Description

Electronic

board
in/out

V ref.

Connected to

Electronic board power

BOARD

24V always, with connected batteries

BAT

Ignition key circuit power supply

IN/OUT

24V always, with connected batteries

Auxiliary signal power supply

OUT

24V always, with connected batteries

SW1 SW2

Hour counter power supply

OUT

0V with Vacuum function activated

Drive system electronic board
enabling

OUT

24V with key on “I”

EB2.J1.15

Return from ignition key

24V with key on “I”

Electronic board power supply -

0V always, with connected batteries

BAT

Brush fuse voltage drop r

0 ÷ 50mV nearly proportional to the current in brush motors

Brush fuse voltage drop reading -

0V always, with connected batteries

Brush electromagnetic switch power
supply -

OUT

0V with brush function activated

ES1

Vacuum system relay power supply -

OUT

0V with Vacuum function activated

ES2

Electromagnetic switch/relay power

OUT

24V with key on “I”

ES1-ES2

Brush motor braking circuit

24V with brush function deactivated

ES1.NC

Drive system/brush enabling (panel)

24V with pressed paddle

SW1

Содержание Razor 20

Страница 1: ...Simple Clean Razor 20 20T SERVICE MANUAL Kent model 908 7200 020 908 7201 020 9097065000 2 2009 06 ...

Страница 2: ...RUSH 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 SYST...

Страница 3: ...TTERY 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 ...

Страница 4: ...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 Pr...

Страница 5: ... 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 lammable and or explosive powders liquids or vapours This machine is not suitable for co...

Страница 6: ...d reduce the air low Do not remove or modify the plates afixed 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 speciied in the User Manual Usin...

Страница 7: ... 5349 1 98 4 in s2 2 5 m s2 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 H2 O 1 055 mm H2 O 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...

Страница 8: ...GENERAL INFORMATION ENGLISH SERVICE MANUAL 8 9097065000 2 2009 06 Razor 20 20T DIMENSIONS RAZOR 20 1 058 5 mm 540 8 mm 1 228 mm 760 mm DIMENSIONS RAZOR 20T 1 058 5 mm 540 8 mm 1 228 mm 760 mm ...

Страница 9: ...rge of the maintenance For instructions on maintenance procedures see the following paragraphs SCHEDULED MAINTENANCE TABLE Procedure Daily after machine use Weekly Every six months Yearly Battery charging Squeegee cleaning Brush pad cleaning Tank and vacuum grid with loat cleaning and cover gasket check Squeegee blade check and replacement Solution ilter cleaning Battery WET luid level check Vacuu...

Страница 10: ...handwheel 29 Recovery water tank cover opened to be cleaned 30 Tank cover gasket 31 Cover movable retaining plate 32 Cover ixed retaining plate do not remove 33 Serial number plate technical data 34 Squeegee bumper wheels 35 Vacuum grid with automatic shut off loat 36 Solution front iller neck 37 Filter 38 Deck bumper wheels 39 Recovery water tank open 40 Detergent hose 41 Lifted tank tie rod 42 V...

Страница 11: ...NGLISH Razor 20 20T 9097065000 2 2009 06 11 MACHINE NOMENCLATURE Continues 11 12 10 7 6 5 4 3 9 2 1 23 22 21 20 18 19 14 45 32 33 31 37 38 28 39 29 48 24 45 41 30 34 36 13 26 25 15 27 26 35 42 49 40 43 44 46 47 17 16 8 11c 11b 11a P100135 ...

Страница 12: ...MANUAL 12 9097065000 2 2009 06 Razor 20 20T MACHINE NOMENCLATURE Continues 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 P100136 P100137 91 94 93 92 90 P100136 ...

Страница 13: ...rn 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 ilter see the following procedure 8 SOLUTION FILTER CLEANING Drive the machine on a level loor 1 Turn off the switches 71 and 73 2 Close the solution tap A under the machine left lower side The tap A is...

Страница 14: ... the reverse order of disassembly 8 F E A B D C S301522 TROUBLESHOOTING Small amount of solution or no solution reaches the brush Possible causes The solution ilter 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 solu...

Страница 15: ...AD 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 loor 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 disconn...

Страница 16: ... 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...

Страница 17: ...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 insuficient the carbon brushes are worn the carbon brush contact surface is not integral the t...

Страница 18: ... 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 lange F from the reduction unit 6 Assembly Assemble the components in the reverse order of disassembly 7 D E F C C B A S301544 ...

Страница 19: ...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 th...

Страница 20: ...ring 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...

Страница 21: ...eners E and open the grid D recover the loat 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 ...

Страница 22: ...wise 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 accord...

Страница 23: ...ter 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 loor 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...

Страница 24: ...otor 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 insuficient 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...

Страница 25: ...azor 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 ilter 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 eficiency of th...

Страница 26: ...rectly 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 Repe...

Страница 27: ...um grid with automatic shut off loat is activated because the recovery water tank is full empty the recovery water 1 tank The vacuum grid with automatic shut off loat is dirty or the vacuum pre ilter is dirty clean 2 The tank cover is not correctly positioned adjust 3 The tank cover gasket is not eficient or the compensating hole is clogged repair clean 4 The vacuum system motor ilter is dirty cle...

Страница 28: ...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 conta...

Страница 29: ...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 replacement 7 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 t...

Страница 30: ...ving 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 irmly 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 t...

Страница 31: ...connect 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 insuficient the carbon brushes are worn the carbon brush contact surface is not integral the th...

Страница 32: ...tteries 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 Discon...

Страница 33: ... 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 ...

Страница 34: ...ace the drive system electronic board 7 Overcurrent output Check the drive system motor electrical input if the electrical input is normal replace the drive system electronic board 8 Missing power connection 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 9 Low battery voltage C...

Страница 35: ...e machine on a hoisting system if available 2 Otherwise drive the machine on a level loor 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 luids Carefully lower the tank 40 6 Remove the ...

Страница 36: ...he 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 loor 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 Disc...

Страница 37: ...r 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 irst seco...

Страница 38: ...e 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 F...

Страница 39: ...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 electrica...

Страница 40: ...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 ele...

Страница 41: ...e 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 B D E F G H...

Страница 42: ...harger 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 lashing simultaneously Problem related to brush motor overload Perform checks shown in BRUSH MOTOR ELECTRICA...

Страница 43: ...or 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 ...

Страница 44: ...arger 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 ...

Страница 45: ...r 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 s...

Страница 46: ...stem 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 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 F...

Страница 47: ...ry signal power supply OUT 24V always with connected batteries SW1 SW2 4 Hour counter power supply OUT 0V with Vacuum function activated HM 5 Drive system electronic board enabling OUT 24V with key on I EB2 J1 15 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 proportio...

Страница 48: ...ertical only version CFBA706 PIN Description Electronic board in out V ref Connected to 1 Water pump power supply OUT 24V with key on I M4 only for CFBA706 2 Water pump power supply OUT 0V pulsed according to water low setting only with paddle pressed and brush function activated M4 only for CFBA706 3 Solution pump power supply OUT 24V with key on I M5 4 Solution pump power supply OUT 0V pulsed as...

Страница 49: ......

Страница 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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