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SERVICE MANUAL

ENGLISH

Razor Blade 26D / 28D / 28C

909 6510 000(3)2007-12

ELECTRICAL SYSTEM

DRIVE SYSTEM ELECTRONIC BOARD REPLACEMENT

Disassembly

Drive the machine to the appointed disposal area, and empty the recovery water tank (58) with the hose (22).

Empty the solution tank (59) with the tap (36).

Drive the machine on a level floor.

Turn the ignition key (12) to "0".

Carefully lift the tank assembly (60).

Disconnect the battery connector (63).

Remove the nuts (93), then remove the cover (92).

Slightly move the electrical component panel (100).

Disconnect the connectors (A) from the drive system electronic board (B).

Remove the screws (C).

Remove the drive system electronic board (B).

Assembly

Assemble the components in the reverse order of disassembly.

S301358

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11.

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Summary of Contents for 908 7099 020

Page 1: ...Simple Clean Razor Blade 26D 28D 28C SERVICE MANUAL Kent models 908 7099 020 908 7100 020 908 7101 020 909 6510 000 3 2007 12 ...

Page 2: ......

Page 3: ...LACEMENT 17 BRUSH PAD HOLDER DECK OR CYLINDRICAL BRUSH DECK DISASSEMBLY ASSEMBLY 18 BRUSH MOTOR ELECTRICAL INPUT CHECK 18 BRUSH MOTOR CARBON BRUSH CHECK AND REPLACEMENT 20 BRUSH PAD HOLDER MOTOR DISASSEMBLY ASSEMBLY 21 CHECK REPLACEMENT ADJUSTMENT OF DRIVING BELTS BETWEEN MOTORS AND CYLINDRICAL BRUSHES 24 BRUSH DECK LIFTING LOWERING ACTUATOR DISASSEMBLY ASSEMBLY 26 TROUBLESHOOTING 28 RECOVERY WATE...

Page 4: ...G CONTACT CHECK AND REPLACEMENT Machines after January 2007 51 DRIVE SYSTEM MOTOR DISASSEMBLY ASSEMBLY Machines up to January 2007 53 DRIVE SYSTEM MOTOR BEARING AND GASKET DISASSEMBLY ASSEMBLY Machines after January 2007 54 FORWARD REVERSE GEAR PEDAL DISASSEMBLY ASSEMBLY 57 FORWARD REVERSE GEAR PEDAL POTENTIOMETER CHECK AND ADJUSTMENT 58 SPEED REDUCTION SENSOR CHECK ADJUSTMENT 59 SPEED REDUCTION S...

Page 5: ...t work under the lifted machine without supporting it with safety stands MACHINE TRANSPORTATION WARNING Before transporting the machine make sure that All doors and cases are closed The ignition key is removed The machine is securely fastened to the means of transport OTHER AVAILABLE MANUALS The following manuals are available at Kent Literature Service Department RAZOR BLADE Instructions for Use ...

Page 6: ...ore performing any procedure GENERAL SAFETY PRECAUTIONS Specific warnings and cautions to inform about potential damages to people and machine are shown below DANGER Before performing any maintenance repair procedure drive the machine on a level ground remove the ignition key and disconnect the battery This machine must be used by properly trained and authorized personnel only Keep the battery awa...

Page 7: ...ifications Do not wash the machine with direct or pressurised water jets or with corrosive substances Do not use the machine in particularly dusty areas While using this machine take care not to cause damage to people or objects The machine storage temperature must be between 32 F and 104 F 0 C and 40 C The machine operating temperature must be between 32 F and 104 F 0 C and 40 C The humidity must...

Page 8: ...the machine ISO 3744 ISO 4871 LwA 82 4 dB A Vibration level at the operator s arms ISO 5349 1 9 05 295 27 in s2 0 23 7 5 m s2 Vibration level at the operator s body ISO 2631 1 47 24 in s2 1 2 m s2 Batteries 24 V battery box 240 Ah 5 h WET 240 Ah C5 24 V battery box 240 Ah 5 h GEL optional 240 Ah C5 4 6 V batteries 180 Ah 5 h WET 180 Ah C5 4 6 V batteries 180 Ah 5 h GEL optional 180 Ah C5 Standard ...

Page 9: ... motor power 0 54 hp 400 W Brush pad holder rotation speed 190 rpm Brush pad holder pressure with extra pressure deactivated 66 lb 30 kg Brush pad holder pressure with extra pressure activated 110 lb 50 kg TECHNICAL DATA FOR MACHINES WITH CYLINDRICAL BRUSH DECK Description 28C Cylindrical brush size diameter x length 5 7 x 27 1 in 145 x 690 mm Deck right left offset 5 5 3 6 in 138 7 92 2 mm Brush ...

Page 10: ...00 3 2007 12 Razor Blade 26D 28D 28C GENERAL INFORMATION DIMENSIONS RAZOR BLADE 26D 681 5 mm 26 8 in 830 mm 32 6 in 1450 mm 57 0 in 1250 mm 49 2 in DIMENSIONS RAZOR BLADE 28D 758 mm 30 in 1450 mm 57 0 in 1250 mm 49 2 in 860 mm 33 9 in ...

Page 11: ...SERVICE MANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 GENERAL INFORMATION DIMENSIONS RAZOR BLADE 28C 758 mm 30 in 1450 mm 57 0 in 1250 mm 49 2 in 860 mm 33 9 in ...

Page 12: ...s see the following paragraphs SCHEDULED MAINTENANCE TABLE Procedure Daily after machine use Weekly Every six months Yearly Squeegee cleaning Brush cleaning Tank and vacuum grid with float cleaning Battery charging Squeegee blade check and replacement Side skirt check Solution filter cleaning WET battery fluid level check Screw and nut tightening check 1 Check and adjustment of driving belts betwe...

Page 13: ... steering driving and braking wheel 41a Electromagnetic brake unlock handwheel 41b Electromagnetic brake unlock handwheel Serial number plate technical data Rear wheels 1 2 3 4 5 6 7 8 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 42 43 Side skirt height adjustment knobs Recovery water tank cover open Recovery water tank cover gasket Recovery water va...

Page 14: ...azor Blade 26D 28D 28C MAINTENANCE MACHINE NOMENCLATURE Continues 33 34 35 13 14 42 32 15 19 20 25 18 16 21 43 25 29 30 27 31 24 26 26 27 25 23 28 17 18 37 38 16 18 36 43 25 22 44 44 44 3 2 6 5 4 7 7c 7b 7a 8 10 10a 10b 11 12 1 40 39 41a 39 41b S301315 ...

Page 15: ...SERVICE MANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 13 MAINTENANCE MACHINE NOMENCLATURE Continues S301396 S301397 S301318 ...

Page 16: ...ENGLISH SERVICE MANUAL 14 909 6510 000 3 2007 12 Razor Blade 26D 28D 28C MAINTENANCE MACHINE NOMENCLATURE Continues S301619 ...

Page 17: ...t the machine as shown in the User Manual and keep it running until the solution tank is completely empty Remove the support rod 57 and close the cover 56 Clean the solution filter see the following procedure SOLUTION FILTER CLEANING Drive the machine on a level floor Turn the ignition key 12 to 0 Close the solution tap A under the machine behind the right rear wheel The tap A is closed when it is...

Page 18: ...right wheel E Remove the screws F Move the support G forward by disengaging the fastener H from the screw I Disconnect the hoses J and K from their fittings L Disconnect the hose M from the pressure switch N by pulling it Disconnect the connectors O of the solenoid valve P and of the pressure switch Recover the whole assembly G and at the workbench remove the solenoid valve R or the filter assembl...

Page 19: ...SERVICE MANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 17 DETERGENT SUPPLY SYSTEM SOLUTION SYSTEM SOLENOID VALVE TAP FILTER DISASSEMBLY ASSEMBLY Continues S301321 ...

Page 20: ...e solenoid valve is broken or there is an open in the electrical connection replace the solenoid valve repair the electrical connection There is debris in the solution tank clogging the output hole clean the tank There are debris in the solution hoses clogging the flow clean the hoses THE SOLUTION REACHES THE BRUSH ALSO WHEN THE MACHINE IS OFF Possible causes There is dirt or calcium deposit on th...

Page 21: ...wn on the same level along all its length is integral and free from cuts and lacerations has the inner corner D that is not worn Otherwise overturn or replace the skirts according to the following procedure Overturning or replacement Remove the wing nuts E then remove the retaining strip F Remove the skirt blade G and if possible overturn the blade to replace the lower inner corner D with an integ...

Page 22: ...ms A under the brush pad holder deck sides B or the cylindrical brush deck C as shown in the figure The wooden shim height must be 1 5 in 40 mm WARNING Keep the wooden shims A at a proper distance from the brush hubs D Apply the amperometric pliers E on one cable F of the right motor G or on one cable H of the left motor I Turn the ignition key 12 to I Press the switch 4 to lower the deck B or C o...

Page 23: ...SERVICE MANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 21 BRUSHING SYSTEM BRUSH MOTOR ELECTRICAL INPUT CHECK Continues S301326 ...

Page 24: ...ry disconnect the connections F and remove the carbon brushes with their supports A and replace them Replace the carbon brushes as an assembly Assemble the components in the reverse order of disassembly and note the following When connecting the terminals F take care of their insulation from the surrounding parts of the frame S301327 CYLINDRICAL BRUSH MOTOR CARBON BRUSH CHECK AND REPLACEMENT Remov...

Page 25: ... see the procedure in the relevant paragraph At the workbench disconnect the motor electrical connections A Cut the motor clamp B Remove the motor screw C then remove the relevant hub assembly D Recover the key E Remove the four motor screws F Remove the reduction unit G Assembly Assemble the components in the reverse order of disassembly and note the following Place the reduction units G as shown...

Page 26: ...C then remove the cover D Loosen the nuts E and remove the cover F Loosen the nut I and move the pulley J to loosen the belt K Remove the belt K from the brush motor pulley L Disconnect the brush motor electrical connections M Remove the screws G then remove the motor H Assembly Assemble the components in the reverse order of disassembly and note the following The electrical connections M of the m...

Page 27: ...SERVICE MANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 25 BRUSHING SYSTEM CYLINDRICAL BRUSH MOTOR DISASSEMBLY ASSEMBLY Continues S301330 ...

Page 28: ...he following procedure Check the belt tension G according to the following procedure Replacement If the belt G must be replaced loosen the nut J and move the pulley K to loosen the belt Tension the belt G according to the following procedure Belt tensioning Check the tension of the belt G between motor and brush The tension is correct when pressing the belt in its centre with a force of 22 lb 10 k...

Page 29: ...SERVICE MANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 27 BRUSHING SYSTEM CHECK REPLACEMENT ADJUSTMENT OF DRIVING BELTS BETWEEN MOTORS AND CYLINDRICAL BRUSHES Continues S301332 ...

Page 30: ...rn the ignition key 12 to 0 Carefully lift the tank assembly 60 to reach the batteries Disconnect the battery connector 63 Remove the deck see the procedure in the relevant paragraph Remove the nuts A then carefully remove the cover B Carefully move the electrical component panel C and disconnect the deck lifting lowering actuator connector D Remove the lower mounting screw E of the actuator F Rem...

Page 31: ...SERVICE MANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 29 BRUSHING SYSTEM BRUSH DECK LIFTING LOWERING ACTUATOR DISASSEMBLY ASSEMBLY Continues S301334 ...

Page 32: ...ONE BRUSH DO NOT TURN Possible causes The motor carbon brushes are worn replace There are bulky debris or cords around the brushes or between the brushes and their flanges remove the brushes and the debris The motor is faulty repair or replace The wiring harness is damaged repair THE BRUSHES CANNOT BE LIFTED LOWERED OR THE EXTRA PRESSURE FUNCTION CANNOT BE TURNED ON Possible causes see also the El...

Page 33: ...e water in the tank through the hose 22 If necessary release the fasteners A and open the grid B recover the float C clean all components and then reinstall them Check the tank cover gasket D for integrity NOTE The gasket D creates vacuum in the tank that is necessary for vacuuming the recovery water If necessary replace the gasket D by removing it from its housing E When assembling the new gasket...

Page 34: ...urn the ignition key 12 to I Turn on the vacuum system motor by pressing the switch 6 and check that the motor electrical input is 18 22 A at 24 V Turn off the vacuum system motor by pressing the switch 6 Turn the ignition key 12 to 0 and remove the amperometric pliers A If the electrical input exceeds the specifications check the motor carbon brushes see the procedure in the relevant paragraph If...

Page 35: ... water tank 58 with the hose 22 Empty the solution tank 59 with the tap 36 Drive the machine on a level floor Turn the ignition key 12 to 0 Carefully lift the tank assembly 60 Apply the amperometric pliers A on one cable B of the vacuum system motor C Turn the ignition key 12 to I Turn on the vacuum system motor by pressing the switch 6 and check that the motor electrical input is 16 19 A at 24 V ...

Page 36: ...60 to reach the batteries Disconnect the battery connector 63 Remove the cover A from the vacuum system motor B Remove the screws C Disconnect the electrical connections D Remove the carbon brushes E Check the carbon brushes for wear Replace the carbon brushes when the contact with the motor armature is insufficient the carbon brushes are worn the carbon brush contact surface is not integral the t...

Page 37: ...bly 60 to reach the batteries Disconnect the battery connector 63 Remove the cover A from the vacuum system motor B Remove the screws C Disconnect the electrical connections D Remove the carbon brushes E Check the carbon brushes for wear Replace the carbon brushes when the contact with the motor armature is insufficient the carbon brushes are worn the carbon brush contact surface is not integral t...

Page 38: ...gnition key 12 to 0 Disconnect the vacuum hose 23 from the squeegee 24 Carefully lift the tank assembly 60 Disconnect the battery connector 63 Disconnect the connector D from the vacuum system motor Remove the screws A then remove the recovery water tank B with the vacuum hose C Remove the screws E Remove the vacuum system motor F Recover the gasket G Assembly Assemble the components in the revers...

Page 39: ...onnect the battery connector 63 Disconnect the connector D from the vacuum system motor Remove the screws A then remove the recovery water tank B with the vacuum hose C Remove the screws E and recover the washer Remove the vacuum motor cover F Recover the Filter G and the gasket H Remove the vacuum system motor I the acoustic insulation pipe J and the acoustic insulation panel K Check the gasket e...

Page 40: ...rding to the following procedure Disengage the fastener G and loosen the wing nuts H to adjust the rear blade D then tighten the wing nuts and engage the fastener Loosen the wing nuts I to adjust the front blade C then tighten the wing nuts Check the front blade C and rear blade D for integrity cuts and tears if necessary replace them as shown below Check that the front corner J of the rear blade ...

Page 41: ...ccording to the procedure shown in the User Manual Remove the batteries and the battery case see the procedure in the Electrical System chapter Clean and lubricate the sliding shoe A of the squeegee lifting cable B with graphite grease Install the batteries and the battery case see the procedure in the Electrical System chapter Lift the squeegee 24 S301340 1 2 3 4 5 ...

Page 42: ...batteries and the battery case see the procedure in the Electrical System chapter Remove the retaining rings A and the pin B thus disconnecting the terminal C of the squeegee lifting cable D Remove the screw E Disconnect the connector F of the actuator I Disconnect the actuator connector G from the clamps H Remove the squeegee lifting actuator I Assembly Assemble the components in the reverse orde...

Page 43: ...ee lifting cable D Remove the screw E and recover the washer F Remove the guide G Carefully lower the tank assembly 59 Remove the nut and the locknut H then remove the lifting cable I from the squeegee assembly J Assembly Assemble the components in the reverse order of disassembly and note the following Before assembling the lifting cable I lubricate the squeegee lifting cable sliding shoe K with ...

Page 44: ...shut off float is activated because the recovery water tank is full empty the recovery water tank The grid is dirty clean The tank cover is not correctly positioned adjust The tank cover gasket is not efficient replace The squeegee or the vacuum hose is clogged or damaged clean or repair replace The vacuum gaskets are damaged or do not match perfectly repair or replace THE SQUEEGEE LEAVES LINING O...

Page 45: ...ive the machine on a dry floor that offers a good grip Turn the ignition key 12 to 0 Get off of the machine and push it manually in the direction shown by the arrow A then check that the front wheel B is locked If necessary replace the electromagnetic brake see the procedure in the relevant paragraph B A B S301640 Machines up to January 2007 Machines after January 2007 1 2 3 ...

Page 46: ...he wiring harness B from the clamps C Remove the self locking nut D and the unlocking handwheel E Remove the screws F then remove the cover G Remove the electromagnetic brake mounting screws H Remove the electromagnetic brake I Remove the brake pad J Assembly Assemble the components in the reverse order of disassembly and note the following Before assembling the cover G check the gasket L for dirt...

Page 47: ...SERVICE MANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 45 PARKING BRAKE SYSTEM ELECTROMAGNETIC BRAKE DISASSEMBLY ASSEMBLY Machines up to January 2007 Continues S301344 ...

Page 48: ...onnect the electromagnetic brake connector B Remove the screws C then remove the case D by disengaging the wiring harness grommet E Remove the screws F then remove the electromagnetic brake G Remove the disc with braking masses H Check the thickness J of the braking masses K and if it is lower than 0 039 in 1 mm the disc H must be replaced If necessary remove the flange I Assembly Assemble the com...

Page 49: ...SH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 47 PARKING BRAKE SYSTEM ELECTROMAGNETIC BRAKE AND DISC WITH BRAKING MASSES DISASSEMBLY ASSEMBLY Machines after January 2007 Continues N N M O L F F F G H I H K J J S301642 ...

Page 50: ... electromagnetic brake Machines after January 2007 The electromagnetic brake air gap is not properly adjusted adjust THE BRAKE DOES NOT DEACTIVATE WHEN PRESSING THE FORWARD REVERSE GEAR PEDAL Possible causes There is an open in the wiring harness between the drive system electronic board and the electromagnetic brake check repair the wiring harness electrical connections The electromagnetic brake ...

Page 51: ...7 see the procedure in the relevant paragraph Turn the front wheel A completely to the left Apply proper wedges to right and left rear wheels 43 so that the machine cannot move when the front wheel A is lifted With the help of an assistant slightly lift the front part of the machine and apply to the frame brackets B two proper wooden shims C high enough to keep the front wheel A lifted for about 1...

Page 52: ... the front wheel R lifted for about 1 18 in 3 cm from the floor Lift the tank assembly 60 and disconnect the battery connector 63 Remove the wiring harness fastening clamp A Cut the fastening clamps B of the connector C Disconnect the electromagnetic brake connector C Remove the screws D then remove the cover E Disconnect the electrical connections F Remove the screws G then remove the driving whe...

Page 53: ...ANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 51 DRIVE SYSTEM DRIVING WHEEL COVER DISASSEMBLY ASSEMBLY Machines after January 2007 Continues S T R T I I J P O P O Q N O O M M L L K G G H S S301644 ...

Page 54: ... red E The amperometric pliers must not touch the wheel Seat on the machine driver s seat 37 Turn the ignition key 12 to I Drive the machine at the maximum forward speed by pressing the pedal 15 and check that the electrical input is 10 15 A at 24 V Release the pedal 15 Turn the ignition key 12 to 0 and remove the amperometric pliers D If the electrical input is higher perform the following proced...

Page 55: ...The amperometric pliers must not touch the wheel Seat on the machine driver s seat 37 Turn the ignition key 12 to I Drive the machine at the maximum forward speed by pressing the pedal 15 and check that the electrical input is 10 15 A at 24 V Release the pedal 15 Turn the ignition key 12 to 0 and remove the amperometric pliers D If the electrical input is higher perform the following procedures to...

Page 56: ...tank assembly 60 Disconnect the battery connector 63 Remove dust and debris from the drive system motor outer part F then disengage and remove the clamp A from the motor Lift the retaining springs B and remove the four carbon brushes C Check the carbon brushes for wear Replace the carbon brushes when the contact with the motor armature is insufficient the carbon brushes are worn the carbon brush c...

Page 57: ...refully lift the tank assembly 60 Disconnect the battery connector 63 Remove the drive system motor carbon brush covers A bayonet joint Remove the gasket B and check them for integrity and efficiency if necessary replace them Remove the screws C then remove the four carbon brushes D Check the carbon brushes D for wear Replace the carbon brushes when the contact with the motor armature is insuffici...

Page 58: ...t the battery connector 63 Remove the screws A then remove the sliding contact cover B Disconnect the sliding contact connections C Remove the sliding contact mounting screws D and nuts E Recover the washer E Remove both sliding contacts G Check the sliding contacts D for wear Replace the sliding contacts when the contact with the sliding ring is insufficient the sliding contacts are worn the cont...

Page 59: ...CE MANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 57 DRIVE SYSTEM DRIVE SYSTEM MOTOR SLIDING CONTACT CHECK AND REPLACEMENT Machines after January 2007 Continues D G F E D E G D G E H H S301648 ...

Page 60: ...ng gear D and recover the key E Mark the position G of the flange H on the wheel support I for proper reassembly Remove the screws F then remove the flange H Remove the screws J If necessary to remove the drive system motor K hit the shaft L with a plastic mallet Assembly Assemble the components in the reverse order of disassembly and note the following The connectors A of the drive system motor K...

Page 61: ...he relevant paragraph Turn the front wheel AG completely to the left Apply proper wedges to right and left rear wheels 43 so that the machine cannot move when the front wheel AG is lifted With the help of an assistant slightly lift the front part of the machine and apply to the frame brackets AH two proper wooden shims AI high enough to keep the front wheel AG lifted for about 1 18 in 3 cm from th...

Page 62: ...U then remove the carbon brushes holder assembly V If necessary remove the bearing W With a puller K remove the brush side bracket X If necessary remove the screws Z and the fasteners AA then remove the bearing Y if necessary use a puller Remove the motor AB from the reduction unit AC Do not let the oil coming out of the hole AF Do not let dust and dirt enter the reduction unit through the hole AF...

Page 63: ...Blade 26D 28D 28C 909 6510 000 3 2007 12 61 DRIVE SYSTEM DRIVE SYSTEM MOTOR BEARING AND GASKET DISASSEMBLY ASSEMBLY Machines after January 2007 Continues J P O P O Q N O O M M L K I I L AF X Y Z AA AC AB AE AD W V U U R T S S301650 ...

Page 64: ...RD REVERSE GEAR PEDAL DISASSEMBLY ASSEMBLY Disassembly Drive the machine on a level floor Engage the parking brake Remove the pedal mounting screws A Slightly lift the pedal B and disconnect the connector C Assembly Assemble the components in the reverse order of disassembly S301349 1 2 3 4 5 ...

Page 65: ...en remove the protection B Apply a tester on the connector centre contact C and on the side contact D then check that the resistance is 2 500 500 Ω Ohm when the pedal is released If necessary reset the resistance correct value by loosening the screw F and operating on the potentiometer screw E Then tighten the screw F Install the protection B and tighten the screws A Install the forward reverse ge...

Page 66: ...lity in every condition If necessary adjust the speed reduction sensor according to the following procedure Adjustment Place the machine on a hoisting system if available Otherwise drive the machine on a level floor Turn the ignition key 12 to 0 Clean the flange A in the area where the speed reduction sensor B operates Turn the steering wheel until the sensor B moves out of the deactivation area C...

Page 67: ...o mounting screws H of the foot board I Lift the foot board J and remove the sensor cable K through the passage L Remove the nuts M then remove the speed reduction sensor N with the cable Assembly Assemble the components in the reverse order of disassembly and note the following Insert the speed reduction sensor wiring harness O with the connector P disconnected then connect the wiring harness to ...

Page 68: ...ENGLISH SERVICE MANUAL 66 909 6510 000 3 2007 12 Razor Blade 26D 28D 28C DRIVE SYSTEM SPEED REDUCTION SENSOR REPLACEMENT Continues S301353 ...

Page 69: ... driver s seat according to the following procedure Check for driver s seat microswitch proper operation otherwise replace it according to the following procedure If necessary check the driver s seat microswitch wiring harness DRIVER S SEAT SAFETY MICROSWITCH REPLACEMENT Disassembly Drive the machine on a level floor Turn the ignition key 12 to 0 Open the cover 56 and install the support rod 57 Re...

Page 70: ...erse gear pedal potentiometer is misadjusted or broken adjust or replace The speed adjuster is broken replace The drive system electronic board is faulty replace The wiring harness is damaged check all connections inside the electrical component compartment included those of the function electronic board The drive system motor carbon brushes are worn replace The drive system motor is faulty replac...

Page 71: ...ty main contact OFF function replace the electronic board 2 3 Faulty main contact replace the electronic board 2 4 Faulty main contact ON function replace the electronic board 3 1 Forward reverse gear pedal pressed when starting the machine check 3 2 Wrong programming of drive system electronic board replace 3 3 Forward reverse gear pedal pressed when starting the machine check 3 4 Wrong programmi...

Page 72: ...area and empty the recovery water tank 58 with the hose 22 Empty the solution tank 59 with the tap 36 Drive the machine on a level floor Turn the ignition key 12 to 0 Carefully lift the tank assembly 60 Check Tightening of mounting screws and nuts Correct position of fasteners Visible faults in the components Leaks of fluids Carefully lower the tank assembly 60 1 2 3 4 5 6 7 ...

Page 73: ...Remove the cover A the cover is press fitted Remove the steering wheel nut B and recover the washer C Remove the steering wheel D Remove the clamp E Remove the screws F and slightly lift the control panel G with care Disconnect the connectors H and recover the control panel Remove the steering wheel tilting control lever support screws I Slightly pull the lever J upwards and remove the support K D...

Page 74: ...ENGLISH SERVICE MANUAL 72 909 6510 000 3 2007 12 Razor Blade 26D 28D 28C OTHER SYSTEMS FRONT FAIRING DISASSEMBLY ASSEMBLY Continues S301356 ...

Page 75: ...econds approximately Press and release the switch 9 5 times within 5 seconds The hour counter is reset BATTERY MAINTENANCE AND RECHARGING See the User Manual BATTERY DISASSEMBLY ASSEMBLY Disassembly Drive the machine to the appointed disposal area and empty the recovery water tank 58 with the hose 22 Empty the solution tank 59 with the tap 36 Drive the machine on a level floor Turn the ignition ke...

Page 76: ...ver 92 Check replace the following fuse Drive system electronic board protection fuse F2 60 A 96 Carefully move the electronic component panel 100 and check replace the following fuses Low power circuit protection fuse F3 5 A A Function electronic board protection fuse F1 100 A B Install the electrical component panel 100 and the cover 92 then tighten the nuts 93 S301400 1 2 3 4 5 ...

Page 77: ...th the tap 36 Drive the machine on a level floor Turn the ignition key 12 to 0 Carefully lift the tank assembly 60 Disconnect the battery connector 63 Remove the nuts 93 then remove the cover 92 Slightly move the electrical component panel 100 Disconnect the connectors A from the drive system electronic board B Remove the screws C Remove the drive system electronic board B Assembly Assemble the co...

Page 78: ... Drive the machine on a level floor Turn the ignition key 12 to 0 Carefully lift the tank assembly 60 Disconnect the battery connector 63 Remove the nuts 93 then remove the cover 92 Slightly move the electrical component panel A Disconnect the connectors B of the function electronic board C Disconnect the lead in wires D Remove the screws E Remove the function electronic board C Assembly Assemble ...

Page 79: ...on tank 59 with the tap 36 Drive the machine on a level floor Turn the ignition key 12 to 0 Carefully lift the tank assembly 60 Disconnect the battery connector 63 Remove the mounting screws then slightly lift the control panel 1 Disconnect the connectors A of the dashboard electronic board B Remove the dashboard electronic board B by disengaging the fasteners E Assembly Assemble the components in...

Page 80: ...en in the fuses replace The wiring harness is cut or pressed repair FUNCTION ELECTRONIC BOARD ERROR CODES On the function electronic board there are the following warning LEDs Red LED upper 101 Green LED 102 Red LED lower 103 Under normal conditions ignition key turned to I and batteries connected only the green LED 102 must be on If the green LED 102 is off the possible causes are The batteries a...

Page 81: ...All except Out By ignition key 2 flashes Deck actuator CC1 lowering overcurrent Short circuit in deck actuator cable check or faulty deck actuator replace or faulty function electronic board replace Deck actuator By switch 4 3 flashes Deck actuator CC2 lifting overcurrent Deck actuator By switch 4 4 flashes Overvoltage Wrong battery voltage check battery voltage and battery series parallel connect...

Page 82: ... All except Out By ignition key 11 flashes Ignition key turned to 0 False contact from ignition key circuit check connections of dashboard function electronic board ignition switch emergency push button and battery charger All except Out By ignition key 12 flashes EEPROM software failure Faulty function electronic board replace All except Out By ignition key 13 flashes Squeegee actuator CC lowerin...

Page 83: ...tra pressure function switch LED power supply Indef 0 V Out 8 Vacuum system on off switch LED power supply Indef 0 V Out 9 Battery GREEN LED power supply Indef 0 V Out 10 Battery YELLOW LED power supply Indef 0 V Out 11 Battery RED LED power supply Indef 0 V Out 12 Pressure switch output 0 5 V Out 13 Solenoid valve adjustment input 1 Indef 0 V In 14 Solenoid valve adjustment input 2 Indef 0 V In 1...

Page 84: ...ng input Indef 0 V In 7 Drive system inhibition output Indef 0 V Out 8 Horn output Indef 0 V Out J4 PIN Description Reference voltage Electronic board in out 1 Deck jack power supply Indef Out 2 Deck jack power supply Indef Out 3 Jack return microswitch m0 Indef 0 V In 4 Jack return microswitch m1 Indef 0 V In 5 Jack return microswitch m2 Indef 0 V In 6 Jack microswitch common power supply 0 V Out...

Page 85: ... F1 Function electronic board fuse F2 Drive system electronic board fuse F3 Low power circuit fuse F4 Pump fuse optional K1 Ignition switch LD1 Drive system electronic board diagnostic warning light M1 Left brush motor M2 Right brush motor M3 Vacuum system motor M4 Brush deck actuator M5 Drive system motor M6 Squeegee actuator M7 Water pump optional M8 Detergent pump optional M9 Cooling fan PR1 Wa...

Page 86: ...RVICE MANUAL 84 909 6510 000 3 2007 12 Razor Blade 26D 28D 28C ELECTRICAL SYSTEM COMPONENT LAYOUT Continues RV1 SW0 K1 EB3 RV2 M5 SW5 BE SW4 BRX BRX S301651 Machines up to January 2007 Machines after January 2007 ...

Page 87: ...SERVICE MANUAL ENGLISH Razor Blade 26D 28D 28C 909 6510 000 3 2007 12 85 ELECTRICAL SYSTEM COMPONENT LAYOUT Continues S301403 ...

Page 88: ...F1 Function electronic board fuse F2 Drive system electronic board fuse F3 Low power circuit fuse F4 Pump fuse optional K1 Ignition switch LD1 Drive system electronic board diagnostic warning light M1 Left brush motor M2 Right brush motor M3 Vacuum system motor M4 Brush deck actuator M5 Drive system motor M6 Squeegee actuator M7 Water pump optional M8 Detergent pump optional M9 Cooling fan PR1 Wat...

Page 89: ... 6 J2 3 J2 4 J5 1 J5 2 B J1 5 J2 7 J2 5 J2 6 J2 8 J1 9 J1 8 J1 14 J1 6 J3 4 J1 16 J3 8 J3 1 J3 5 J3 7 J1 12 B M2 M5 M1 M1 M2 J1 2 J1 17 J1 3J1 4 J1 13 J1 18 RD OG OG BU BN SW6 BU BN GN J1 4 J1 5 J1 6 BK YE OG BK RD BN BN BU RD BU J3 2 RV2 YEBK OG OG RD BK WH BU RD BK BK GNBK WH OG OGBK RDBK RDBK BUBK BU RD OG J1 7 GNBK OG J1 8 J1 7 J1 6 J1 11 J1 10 J1 9 J1 14 J1 13 J1 12 J1 2 J1 16 J1 15 J1 1 J1 2...

Page 90: ...14600 21st Avenue North Plymouth MN 55447 3408 www kenteuroclean com Phone 800 334 1083 Fax 866 261 4779 2007 Printed in Italy ...

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