Nilfisk-Advance SC401 17 B Service Manual Download Page 132

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132

Service Manual – SC401, SCRUBTEC 344

30 - Solution System

Troubleshooting

Trouble

Possible Causes

Remedy

Small amount of solution or no

solution reaches the brush

The solution filter is clogged/dirty

Clean the filter

Solution supply valve locked in (semi) closed

position

Replace the valve

Solenoid valve (EV1) broken or electrical

connection interrupted

Replace the solenoid

valve/repair the electrical

connection

Presence of debris in water tank blocking the

outlet hole

Clean the tank

Presence of debris in the detergent solution

hose, blocking the passage of the liquid

Clean the hoses

The solution reaches the brush

also when the machine is off

Presence of dirt or scale in solenoid valve

(EV1)

Clean the solenoid valve

Solenoid valve (EV1) broken

Replace the solenoid valve

The Detergent system is not

reaching the brush, or is not

arriving in sufficient quantity

The hydraulic circuit upstream of the

detergent pump is not triggered

Check if the hose is filled

and, if necessary, perform

one or more draining cycles

The pump (M4) is broken or there is an open

in the electrical connection

Replace the pump/repair the

electrical connection

There is foreign material/debris in the

detergent bottle clogging the output hole

Clean the bottle

There is debris in the detergent hoses

clogging the detergent flow

Clean the hoses

Summary of Contents for SC401 17 B

Page 1: ...del Numbers 9087394020 SC401 17 B 9087395020 SC401 17 BD Nilfisk Model Numbers 9087391020 SC401 43 B 9087390020 SC401 43 B FULL PKG 9087392020 SC401 43 E 9087393020 SC401 43 BD 9087398020 SC401 43 BD FULL PKG 9087396020 SCRUBTEC 344 B COMBI 9087397020 SCRUBTEC 344 E English ...

Page 2: ...hine View 21 Know Your Machine Cord 22 Control Panel View 22 Rear Left Machine View 23 Front Right Machine View 24 Service and Diagnostic Equipment 25 Dimensions 27 04 Control System Battery 28 Functional Description 28 Functional Block Diagram no Drive 30 Functional Block Diagram Drive 31 Wiring Diagram 32 Component Locations 33 Maintenance and Adjustments 34 Parameter Machine Settings 34 Trouble...

Page 3: ...ctors 82 10 Chassis System 84 Chassis Main Parts 84 14 Wheel System Non Traction 85 Functional Description 85 Component Locations 85 Specifications 86 20 Wheel System Traction 87 Functional Description 87 Wiring Diagram 88 Component Locations 89 Maintenance and Adjustments 90 Drive Motor Clenanig 90 Drive Wheels Controller EB3 Parameters 91 Troubleshooting 93 Drive Wheels Controller EB3 Alarms 94 ...

Page 4: ...Pre Wetted 125 Adjusting of Detergent Concentration in the Washing Water 126 Wiring Diagram 127 Component Locations 128 Maintenance and Adjustments 130 Cleaning the Water Tank and Filter 130 Detergent Tank and Detergent System Cleaning 131 Troubleshooting 132 Removal and Installation 133 Solenoid Valve 133 Specifications 135 34 Scrub System Disc 136 Functional Description 136 Brush Engage and Rele...

Page 5: ...g 155 Removal and Installation 156 Spring on the Squeegee Support 156 Specifications 157 40 Recovery System 158 Functional Description 158 Wiring Diagram 159 Component Locations 160 Maintenance and Adjustments 161 Recovery Tank Cleaning 161 Troubleshooting 162 Vacuum Motor Current Draw Test 163 Removal and Installation 164 Vacuum Motor Unit 164 Container and Vacuum Motor Disassembly Assembly 165 S...

Page 6: ...sh and dry floors in one pass The machine is powered by on board batteries or cord power supply The machine features a floor disc brush controlled detergent solution dosing and a rear squeegee with rubber blades that vacuums and dries the floor Figure 1 Drive handlebar Recovery tank Detergent bottle Vacumm system Solution tank Squeegee Solution system Brush deck Brush ...

Page 7: ...087395020 Nilfisk SC401 17 B FULL PKG 9087390020 9100002291 9100002294 Nilfisk SC401 17 B 9087391020 Nilfisk SC401 17 BD 9087393020 Nilfisk SC401 17 BD FULL PKG 9087398020 Nilfisk SCRUBTEC 344 B COMBI 9087396020 Nilfisk SC401 17 E 9087392020 9100002292 9100002295 Nilfisk SCRUBTEC 344 E 9087397020 Assembly Instructions Instruction Code Machines concerned Key Kit 9100002549 Nilfisk Battery Detergent...

Page 8: ...e intended with reference to the operator s position that is to say in driving position Name Plate Reference to Figure 2 The machine serial number and model name are marked on the plate see the example to the side Model number and year of production Date code A18 as January 2018 are marked on the same plate Figure 2 ...

Page 9: ...water jets max 2 WARNING Do not use the machine on slopes with a gradient exceeding the specifications Symbols The following symbols are used to help you recognize the information concerning the safety and the prevention of problems DANGER Indicates a potentially hazardous situation which if not avoided will result in death or serious injury WARNING Indicates a potentially hazardous situation whic...

Page 10: ...quids or vapours This machine is not suitable for collecting dangerous powders CAUTION BATTERY MODELS Before using the battery charger ensure that frequency and voltage values indicated on the machine serial number plate match the electrical mains voltage Do not pull or carry the machine by the battery charger cable and never use the battery charger cable as a handle Do not close a door on the bat...

Page 11: ...cable Do not handle the plug or the machine with wet hands Turn off all controls before unplugging Regularly check the power supply cable for damages cuts cracks and wear If necessary replace it If the power supply cable is damaged it must be replaced by the Manufacturer or by an authorised Service Centre Do not pull or carry the machine by the power supply cable and never use the power supply cab...

Page 12: ...nents have been properly assembled before use If the machine is not perfectly assembled it can cause damages to people and properties 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 Do not tilt the machine more than the angle indicated on the machine itself in order to prevent instability Do not ...

Page 13: ...iously damage the machine Use only the brushes supplied with the machine or those specified in the Instructions for Use Manual Using other brushes could reduce safety In case of machine malfunctions ensure that these are not due to lack of maintenance If necessary request assistance from the authorised personnel or from an authorised Service Center If parts must be replaced require ORIGINAL spare ...

Page 14: ...machine without supporting it with safety stands Transporting The Machine WARNING Before transporting the machine make sure that All covers are closed The recovery tank and the detergent tank are empty The batteries are disconnected The ignition key is removed The machine is securely fastened to the means of transport ...

Page 15: ...he floor 290 psi 2 0 N mm2 Brush pad diameter 17 in 430 mm Brush pressure 55 lb 25 kg Solution flow values 0 08 0 18 0 53 gpm 0 3 0 7 2 0 L m Detergent bottle capacity 0 26 US gal 1 liters Detergent System detergent percentage 0 25 2 0 Sound pressure level at workstation ISO 11201 ISO 4871 EN 60335 2 72 LpA 65 3 dB A Sound pressure level at workstation in silent mode LpA 60 3 dB A Machine sound po...

Page 16: ...MONOBLOC Battery charger 24V 10A Operating time standard batteries EN 60335 2 72 2 6 h 2 4 h Weight without batteries and with empty tanks 134 lb 61 kg 161 lb 73kg Gross vehicle weight GVW 333 lb 151 kg 359 lb 163 kg Shipping weight basic full package 214 lb 97 kg 340 lb 154 kg 240 lb 109 kg 366 lb 166 kg Machines have been tested under the following conditions Battery maximum size Maximum brush a...

Page 17: ...ressure level at workstation ISO 11201 ISO 4871 EN 60335 2 72 LpA 68 3 dB A Machine sound power level ISO 3744 ISO 4871 EN 60335 2 72 LwA 87 dB A Vibration level at the operator s arms ISO 5349 1 EN 60335 2 72 98 in s2 2 5 m s2 Maximum gradient when working 2 Vacuum system motor power 0 4 hp 280 W Vacuum system circuit capacity 35 4 in H2 O 900 mm H2 O Brush motor power 1 hp 750 W Brush motor spee...

Page 18: ...ystem cleaning and washing Squeegee blade check Solution Filter Cleaning Battery WET fluid level check Squeegee blade replacement Drive and brush motor check and cleaning Brush motor carbon brush check or replacement Cord Models Procedure Daily after use Weekly Monthly Every 6 Months Annually Squeegee Cleaning Brush pad cleaning Recovery tank debris tray and vacuum grid with float cleaning and cov...

Page 19: ... presence sensors Reverse gear switch only for drive version Operator s presence sensors Ignition key 0 I standard for drive version Vacuum system button Battery level Led s Main machine start and stop button USB port Solution button 3 level Speed adjuster only for drive version Hour counter Battery charger inspection window ...

Page 20: ...in and level check hose Squeegee lifting lowering pedal Drive handlebar Control panel Recovery water drain hose Battery charger cable Battery charger cable housing and document holder Serial number plate technical data conformity certification Battery connector red Squeegee adjusting knob Squeegee mounting handwheels Recovery tank cover Recovery tank Squeegee vacuum hose ...

Page 21: ...1 SCRUBTEC 344 03 General Information Front Right Machine View Figure 5 Solution valve Rear wheels Solution tank filler plug Recovery water tank cover Solenoid valve Disc brush deck Brush Recovery tank Solution tank Squeegee ...

Page 22: ...C 344 03 General Information Know Your Machine Cord Control Panel View Figure 6 Operator s presence sensors Operator s presence sensors Start switch 0 I Vacuum system button Main machine start and stop button Solution button 3 level ...

Page 23: ...olution drain and level check hose Squeegee lifting lowering pedal Drive handlebar Control panel Recovery water drain hose Power supply cable holder Power supply cable holder Serial number plate technical data conformity certification Power supply cable Squeegee adjusting knob Squeegee mounting handwheels Recovery tank cover Recovery tank Squeegee vacuum hose ...

Page 24: ...l SC401 SCRUBTEC 344 03 General Information Front Right Machine View Figure 8 Squeegee Solution valve Solution tank filler plug Recovery water tank cover Solenoid valve Disc brush deck Brush Recovery tank Solution tank ...

Page 25: ... possible Internet connection Digital Volt Meter DVM Amp clamp with possibility of making DC measurements Hydrometer Battery charge tester to check 12V batteries Static control wrist strap Dynamometric wrench set A copy of the Instructions for Use Manual and Spare Parts List of the machine to be serviced provided with the machine or available at www advance us com or other Nilfisk websites The fol...

Page 26: ...N 101221030 NilfiskServiceTool software installed on the Laptop computer see the Service tool installation guide or open the Internet browser and type in the serveradress https ftp niladv org Type in Login ID and Password Login ID neotool Password nil2ool2015 Figure 10 Programmer Electronic Cards ITALSEA P N 1466207000 Figure 11 ...

Page 27: ...27 Service Manual SC401 SCRUBTEC 344 03 General Information Dimensions 47 in 1196mm 28 3 in 720 mm 41 3 in 1050 mm 18 in 458 mm 1 8 in 45 mm Figure 12 ...

Page 28: ...1 if at least one of the sensors is active By pressing and holding the Reverse gear switch SW1 along with the Operator presence sensors S1 S2 the system activates the reverse gear until the button is pressed By pressing for 2 sec the Main button when the machine is running the brushing with the solution flow preset to level 1 and vacuum full power functions are turned on or off The LEDs on the Mai...

Page 29: ...ervice Manual SC401 SCRUBTEC 344 04 Control System Battery User interface controller EB2 Speed adjuster RV1 Operator s presence sensor S2 Ignition key K1 Reverse gear switch SW1 Main machine controller EB1 ...

Page 30: ... no Drive BRUSH MOTOR M1 VACUUM MOTOR M2 MAIN MACHINE CONTROLLER EB1 MAIN MACHINE CONTROLLER RELAY ES1 USER INTERFACE CONTROLLER EB2 RH OPERATOR S PRESENCE SENSOR S1 LH OPERATOR S PRESENCE SENSOR S2 24 V BATTERIES BAT BATTERY CHARGER CH Power Main Battery Power PWM PWM Serial Bus Figure 1 ...

Page 31: ...INE CONTROLLER EB1 MAIN MACHINE CONTROLLER RELAY ES1 USER INTERFACE CONTROLLER EB2 RH OPERATOR S PRESENCE SENSOR S1 LH OPERATOR S PRESENCE SENSOR S2 24 V BATTERIES BAT BATTERY CHARGER CH Power Main Battery Power PWM PWM PWM Serial Bus IGNITION KEY KEY DRIVE WHEELS CONTROLLER EB3 REVERSE GEAR SWITCH SW1 SPEED POTENTIOMETER RV1 Figure 2 ...

Page 32: ...NABLE KEY INPUT BTN 1 J201 8 J201 7 J201 6 J201 5 J201 4 J201 3 J201 2 J201 1 Power button output Power button input Power supply Power supply SPI CS3 SPI MISO SPI MOSI SPI clock KEY 2 KEY 1 Key input Key output B R 2 B R 3 Power relay Power relay 24V 0V PTC FUSE B R 1 24V LOGIC Power supply permanent B 24V POWER B 0V BTN 2 IGNITION EXT 1 Power supply Power button input Power button output Power s...

Page 33: ...SC401 SCRUBTEC 344 04 Control System Battery Component Locations User interface controller EB2 Speed adjuster RV1 Operator s presence sensor S2 Ignition key K1 Reverse gear switch SW1 Figure 4 Main machine controller EB1 ...

Page 34: ...e P N 101221030 A to the Main Machine Controller EB1 B 1 If equipped remove the ignition key then disconnect the red battery connector 2 Unscrew the 4 screws and remove the electronic component compartment cover Figure 5 A B 3 Connect the cable marked PROG C to connector D and the cable marked SERVICE E to connector F on the Main Machine Controller EB1 SERVICE PROG Figure 6 F D C E ...

Page 35: ...ce Tool module to a laptop computer H and start the NilfiskServiceTool software 5 Enter the Service Tech access level password to the menù SETTINGS I Access level Password Developer N D Service Tech tech Production prod NPI New Product Introduction Engineers npi Sales sale Customer cust 6 Access the parameters to configure J Figure 7 G H J I ...

Page 36: ...ime ms 5 255 1 7 W W R R T1off Pump state1 off time ms 0 255 1 33 W W R R T2on Pump state2 on time ms 5 255 1 17 W W R R T2off Pump state2 off time ms 0 255 1 23 W W R R T3on Pump state3 on time ms 5 255 1 40 W W R R T3off Pump state3 off time ms 0 255 1 0 W W R R Tm Pump time multiplier 1 255 1 100 W W R R K Solution Detergent flow ratio x10 0 1020 1 268 W W R R 1 Detergent Level 1 percentage x10...

Page 37: ...nt higher then parameter Current sum cutoff default 50 Amp or Current limit during softstart default 50 Amp for a period of time longer than parameter Time for continuous current overload default 30 sec Check if there is dust or debris preventing the brush rotation Check if brush or vacuum motor are stuck issue into the harness Vacuum system button LED flashing fast flashing 0 5 sec ON 0 5 sec OFF...

Page 38: ...ould not wear a sweater fleece or other wool or synthetic clothing when changing the PCB The wrist strap must be connected to an earth ground See the relevant instructions Figure 8 1 If equipped remove the ignition key then disconnect the red battery connector 2 Unscrew the 4 screws and remove the electronic component compartment cover 3 If present remove the on board battery charger A unscrewing ...

Page 39: ...ol System Battery Main Machine Controller EB1 continues 4 Disconnect the following connections C and D main machine controller power supply connection J106 B and J107 B Figure 10 C C D D E and F Vacuum motor connection J403 OUT2 Figure 11 E E F F ...

Page 40: ...4 04 Control System Battery Main Machine Controller EB1 continues G and H Brush motor connection J303 OUT1 Figure 12 G G H H I Solenoid valve connection J601 AUX1 Figure 13 1 2 I I J Detergent pump connection J602 AUX2 Figure 14 1 2 J J ...

Page 41: ... Machine Controller EB1 continues K Hour meter connection J604 AUX4 Figure 15 1 2 K K L User interface controller power connection J105 BTN Figure 16 L L M User interface controller connection J204 EXT Figure 17 1 2 3 4 5 6 7 8 9 10 11 1 3 5 7 9 11 12 2 4 6 8 10 12 M M ...

Page 42: ...stem Battery Main Machine Controller EB1 continues N Drive wheels controller connection JJ209 D4 Figure 18 1 2 3 1 2 3 N N O Main machine controller connection J104 BATTERY RELAY Figure 19 1 2 3 O O P Ignition key connection J101 KEY Figure 20 1 2 P P ...

Page 43: ...ntroller EB1 continues 5 Unscrew the 2 screws Q and pull out the Main machine controller R with his support bracket 6 Unscrew the 4 screws S and cerefully remove the Main machine controller T Figure 21 Q Q R S S S S T 7 Assemble the components in the reverse order of disassembly ...

Page 44: ...er B 3 Disconnect the following connections C and D left and right Operator s presence sensors connection E User interface controller power supply connection J201 4 Carefully remove the User interface controller F detaching it from the cover B 5 Clean the cover area from the glue remained of the User interface controller removed Figure 22 A A B D F C E 6 Assemble the components in the reverse orde...

Page 45: ... I the open the two handlebar parts front and back 3 Disconnect the connection J with the screwdriver carefully remove the operator s presence sensor K detaching it from the support 4 Clean the support area from the glue remained of the operator s presence sensor removed Figure 23 G G G G I I I I I J K H 5 Assemble the components in the reverse order of dissasembly Note The new operator s presence...

Page 46: ...s J106 J107 BATTERY bolt M5 PIN Description Controller in out V ref I max Connected to Vbatt In 24V 35A BAT Vbatt In 0V 35A BAT Figure 24 J303 OUT1 type FCI T702035100J0G 2 ways screw type PIN Description Controller in out V ref I max Connected to 1 Brush output Out 24V 20A M1 2 Brush output Out 0V 20A M1 Figure 25 ...

Page 47: ...0J0G 2 ways screw type PIN Description Controller in out V ref I max Connected to 1 Vacuum output Out 24V 15A M2 2 Vacuum output Out 0V 15A M2 Figure 26 J601 AUX1 type JST B2P VH 2 ways vertical PIN Description Controller in out V ref I max Connected to 1 Solenoid valve output Out 24V 1A EV 2 Solenoid valve output Out 0V 1A EV 1 2 Figure 27 ...

Page 48: ...ways vertical PIN Description Controller in out V ref I max Connected to 1 Detergent pump output Out 24V 1A PM 2 Detergent pump output Out 0V 1A PM 1 2 Figure 28 J604 AUX4 type JST B2P VH 2 ways vertical PIN Description Controller in out V ref I max Connected to 1 Hourmeter output Out 24V 1A HM 2 Hourmeter output Out 0V 1A HM 1 2 Figure 29 ...

Page 49: ...tical PIN Description Controller in out V ref I max Connected to 1 Power supply Out 5V 1A UI J201 6 2 Power supply Out 0V 1A UI J201 5 3 SPI MISO In out 0 5V 1A UI J201 3 4 SPI MOSI In out 0 5V 1A UI J201 2 5 6 SPI clock Out 0 5V 1A UI J201 1 7 8 9 10 11 SPI CS3 Out 0 5V 1A UI J201 4 12 1 2 3 4 5 6 7 8 9 10 11 1 3 5 7 9 11 12 2 4 6 8 10 12 Figure 30 ...

Page 50: ...ways vertical PIN Description Controller in out V ref I max Connected to 1 Power button output Out 24V 1A UI J201 8 2 Power button input In 24V 1A UI J201 7 Figure 31 J101 KEY JST B2P VH 2 ways vertical PIN Description Controller in out V ref I max Connected to 1 Key output Out 24V 1A K1 CH 3 2 Key input In 24V 1A CH 4 K1 1 2 Figure 32 ...

Page 51: ...cal PIN Description Controller in out V ref I max Connected to 1 Power supply permanent In 24V 1A BAT 2 Power relay Out 24V 1A ES1 86 3 Power relay Out 0V 1A ES1 85 1 2 3 Figure 33 J209 D type JST B3B EH A 3 ways vertical PIN Description Controller in out V ref I max Connected to 1 2 Drive system enable output Out 5V 1A EB3 J1 12 3 1 2 3 1 2 3 Figure 34 ...

Page 52: ... 0V 1A TRK BU 2 Supply 24V permanent out 24V 1A TRK RD 1 2 Figure 35 J203 GSM UART LED LEOCO 3675P10VTA0 10 ways vertical PIN Description Controller in out V ref I max Connected to 1 2 3 4 5 Output Machine turned on out 5V 1A TRK BN 6 Output Brush turned on out 0V 1A TRK WH 7 Output Vacuum turned on out 5V 1A TRK GY 8 9 Output Drive turned on out 5V 1A TRK PK 10 Input iButton in 0V 1A TRK YE 1 2 3...

Page 53: ...T 3 4 SPI CS3 In 0 5V 1A EXT 11 5 Power supply In 0V 1A EXT 2 6 Power supply In 5V 1A EXT 1 7 Power button output Out 24V 1A BUTTON 2 8 Power button input In 24V 1A BUTTON 1 12 3 4 5 6 7 8 12 345 6 78 Figure 37 LEFT JST S3B ZR SM4A TF 3 ways side entry PIN Description Controller in out V ref I max Connected to 1 Left operator presence sensor supply out 0V 1A S1 1 2 Left operator presence sensor su...

Page 54: ...tors continues RIGHT JST S3B ZR SM4A TF 3 ways side entry PIN Description Controller in out V ref I max Connected to 1 Right operator presence sensor supply out 0V 1A S2 1 2 Right operator presence sensor supply out 5V 1A S2 2 3 Right operator presence sensor input In 0V 1A S2 3 1 2 3 1 2 3 Figure 39 ...

Page 55: ...s like All voltage values were measured with the black Negative voltmeter lead connected to the main battery negative unless otherwise specified Main Machine Controller EB1 Battery volts at battery key on 24 24V Power Supply Figure 40 PIN Color Description Measured Comments B Red Main machine controller power supply 23 83 V Vac ON B Black Main machine controller power supply 0 039 V Vac ON ...

Page 56: ... PIN Color Description Measured Comments 1 Blue Brush motor 24 14 OFF 23 79 ON 2 Brown Brush motor 24 14 OFF 3 81 ON Vacuum System Motor Figure 42 PIN Color Circuit Description Measured Comments 1 White Vacuum system motor 23 78 V SILENT 23 6 V ON 24 12 OFF 2 Yellow Vacuum system motor 7 39 V SILENT 0 074 V ON 24 12 V OFF ...

Page 57: ... 43 PIN Color Description Measured Comments 1 Blue Solenoid valve power supply 23 56 V All levels 2 Brown Solenoid valve power supply 0 070 V Max level Detergent Pump 1 2 Figure 44 PIN Color Description Measured Comments 1 Red Detergent pump power supply 23 51 V All levels 2 Black Detergent pump power supply 0 052 V Max level ...

Page 58: ...ourmeter power supply 23 47 V 2 Black Hourmeter power supply 0 047 V With drive enable User Interface Controller 1 2 3 4 5 6 7 8 9 10 11 1 3 5 7 9 11 12 2 4 6 8 10 12 Figure 46 PIN Color Circuit Description Measured Comments 1 Brown Power supply 5 1 V Machine ON 2 White Power supply 0 00 V 3 Green SPI MISO 0 5 V 4 Yellow SPI MOSI 0 5 V 6 Grey SPI clock 0 5 V 11 Pink SPI CS3 0 5 V ...

Page 59: ...or Circuit Description Measured Comments 1 Red Power button output 23 84 V OFF 23 75 V ON 2 Blue Power button input 0 00 V OFF 23 84 V While pressing Main button Key 1 2 Figure 48 PIN Color Circuit Description Measured Comments 1 Orange Key output 23 84 V Connected to PTC FUSE 2 Black Orange Key input 23 74 V ON 0 01 V OFF ...

Page 60: ...uit Description Measured Comments 1 Red Power supply permanent 24 18 V Connected to B 2 Black Power relay 23 8 V OFF Connected to PTC FUSE 23 77 ON 3 Black Orange Power relay 24 09 V OFF 0 02 V ON D Drive Enable 1 2 3 1 2 3 Figure 50 PIN Color Circuit Description Measured Comments 2 Green Drive system enable output 0 003 V No Drive 4 95 V Drive ...

Page 61: ... V 2 Yellow SPI MOSI 0 5 V 3 Green SPI MISO 0 5 V 4 Pink SPI CS3 0 5 V 5 White Power supply 0 00 V 6 Brown Power supply 5 10 V Machine ON 7 Blue Power button output 23 85 V While pressing Main button 8 Red Power button input 23 85 V Machine ON and OFF Left Operator s Presence Sensor 1 2 3 1 2 3 Figure 52 PIN Color Circuit Description Measured Comments 1 Red Left operator presence sensor supply 0 0...

Page 62: ...t Operator s Presence Sensor 1 2 3 1 2 3 Figure 53 PIN Color Circuit Description Measured Comments 1 Red Right operator presence sensor supply 0 03 V Machine ON 2 Black Right operator presence sensor supply 5 10 V Machine ON 3 White Right operator presence sensor input 4 26 V No operator 0 09 V With operator ...

Page 63: ... button again when the machine is running the brushing with the solution flow preset to level 1 and vacuum functions are turned on or off The LEDs on the Main and Vacuum buttons show the related ON status Brush rotation and the activation of the pump however also require the activation of at least 1 of the 2 Operator presence sensors S1 S2 The vacuum function can be turned on or off independently ...

Page 64: ...1 6 J201 5 J201 4 J201 3 J201 2 J201 1 EXT 1 EXT 2 EXT 11 EXT 3 EXT 4 EXT 6 L 4 1 5 2 N PE 5V IGNITION 5V 0V SPI CS3 SPI MISO SPI MOSI SPI CLOCK uP uP Left op pres sensor supply Left op pres sensor supply Left op pres sensor input Right op pres sensor supply Right op pres sensor supply Right op pres sensor input Power button output Power button input Power supply Power supply SPI CS3 SPI MISO SPI ...

Page 65: ...65 Service Manual SC401 SCRUBTEC 344 05 Control System Cord Component Locations User interface controller EB2 Operator s presence sensor S2 Start switch SW1 Figure 2 Main machine controller EB1 ...

Page 66: ... P N 101221030 A to the Main Machine Controller EB1 B 1 If equipped remove the ignition key then disconnect the red battery connector 2 Unscrew the 4 screws and remove the electronic component compartment cover Figure 3 A B 3 Connect the cable marked PROG C to connector D and the cable marked SERVICE E to connector F on the Main Machine Controller EB1 SERVICE PROG Figure 4 F D C E ...

Page 67: ...e Tool module to a laptop computer H and start the NilfiskServiceTool software 5 Enter the Service Tech access level password to the menù SETTINGS I Access level Password Developer N D Service Tech tech Production prod NPI New Product Introduction Engineers npi Sales sale Customer cust 6 Access the parameters to configure J Figure 5 G H J I ...

Page 68: ...opdelay Brush ms 0 25000 1 3000 W W R R Stopdelay Vacuum ms 0 25000 1 5000 W W R R T1on Pump state1 on time ms 5 255 1 7 W W R R T1off Pump state1 off time ms 0 255 1 33 W W R R T2on Pump state2 on time ms 5 255 1 17 W W R R T2off Pump state2 off time ms 0 255 1 23 W W R R T3on Pump state3 on time ms 5 255 1 40 W W R R T3off Pump state3 off time ms 0 255 1 0 W W R R Tm Pump time multiplier 1 255 1...

Page 69: ...es The operator should not wear a sweater fleece or other wool or synthetic clothing when changing the PCB The wrist strap must be connected to an earth ground See the relevant instructions Figure 6 1 Make sure that the scrubber is disconnected from the power supply 2 Unscrew the 4 screws A and remove the electronic component compartment cover B to access on the Main machine controller C Figure 7 ...

Page 70: ...ehand by marking the cables with some tape and a marker as shown below D Start switch connection SW1 E Brush motor connection M1 E Vacuum motor connection M2 G Solenoid valve connection EV1 Figure 8 N L N L N L N L N L N L N L N L D E F G 4 Disconnect the following connections D Start switch SW1 connection Figure 9 N L N L D D ...

Page 71: ...71 Service Manual SC401 SCRUBTEC 344 05 Control System Cord Main Machine Controller EB1 continues E Brush motor M1 connection Figure 10 N L N L E E F Vacuum motor M2 connection Figure 11 N L N L F F ...

Page 72: ...72 Service Manual SC401 SCRUBTEC 344 05 Control System Cord Main Machine Controller EB1 continues G Solenoid valve EV1 connection Figure 12 N L N L G G H Earth connection Figure 13 H H ...

Page 73: ...ntrol System Cord Main Machine Controller EB1 continues I User interface controller EB2 power button connection Figure 14 1 2 1 2 I I K User interface controller EB2 connection Figure 15 1 3 5 7 9 11 2 4 6 8 10 12 1 3 5 7 9 11 2 4 6 8 10 12 K K ...

Page 74: ...UBTEC 344 05 Control System Cord Main Machine Controller EB1 continues 5 Unscrew the 4 screws J and cerefully remove the Main machine controller L Figure 16 J J J L J 6 Assemble the components in the reverse order of disassembly ...

Page 75: ...Disconnect the following connections C and D left and right Operator s presence sensors connection E User interface controller power supply connection J201 4 Carefully remove the User interface controller F detaching it from the cover B 5 Clean the cover area from the glue remained of the User interface controller removed Figure 17 A A B D F C E 6 Assemble the components in the reverse order of di...

Page 76: ...I the open the two handlebar parts front and back 3 Disconnect the connection J with the screwdriver carefully remove the operator s presence sensor K detaching it from the support 4 Clean the support area from the glue remained of the operator s presence sensor removed Figure 18 G G G G I I I I I J K H 5 Assemble the components in the reverse order of dissasembly Note The new operator s presence ...

Page 77: ... Connectors MAINS type 2 x faston 6 3 x 0 8 mm PIN Description Controller in out V ref I max Connected to 1 Mains In 230Vac 15A SW1 2 Mains In 230Vac 15A SW1 N L N L Figure 19 GROUND type faston 6 3 x 0 8 mm PIN Description Controller in out V ref I max Connected to 1 Ground In 0Vac Earth bolt Figure 20 ...

Page 78: ...6 3 x 0 8 mm PIN Description Controller in out V ref I max Connected to 1 Brush output Out 230Vac 15A M1 2 Brush output Out 230Vac 15A M1 N L N L Figure 21 OUT2 type 2 x faston 6 3 x 0 8 mm PIN Description Controller in out V ref I max Connected to 1 Vacuum output Out 230Vac 5A M2 2 Vacuum output Out 230Vac 5A M2 N L N L Figure 22 ...

Page 79: ...stem Cord Main Machine Controller EB1 Connectors continues OUT3 type 2 x faston 6 3 x 0 8 mm PIN Description Controller in out V ref I max Connected to 1 Solution valve output Out 230Vac 1A EV 2 Solution valve output Out 230Vac 1A EV N L N L Figure 23 ...

Page 80: ...vertical PIN Description Controller in out V ref I max Connected to 1 Power supply Out 5V 1A UI J201 6 2 Power supply Out 0V 1A UI J201 5 3 SPI MISO In out 0 5V 1A UI J201 3 4 SPI MOSI In out 0 5V 1A UI J201 2 6 SPI clock Out 0 5V 1A UI J201 1 11 SPI CS3 Out 0 5V 1A UI J201 4 1 3 5 7 9 11 2 4 6 8 10 12 1 3 5 7 9 11 2 4 6 8 10 12 Figure 24 ...

Page 81: ... Cord Main Machine Controller EB1 Connectors continues J211 A JST B2B EH A LF SN 2 ways vertical PIN Description Controller in out V ref I max Connected to 1 Power button output Out 5V 1A UI J201 8 2 Power button input In 5V 1A UI J201 7 1 2 1 2 Figure 25 ...

Page 82: ... EXT 3 4 SPI CS3 In 0 5V 1A EXT 11 5 Power supply In 0V 1A EXT 2 6 Power supply In 5V 1A EXT 1 7 Power button output Out 5V 1A BUTTON 2 8 Power button input In 5V 1A BUTTON 1 123456789 123456789 Figure 26 LEFT JST S3B ZR SM4A TF 3 ways side entry PIN Description Controller in out V ref I max Connected to 1 Left operator presence sensor supply out 0V 1A S1 1 2 Left operator presence sensor supply o...

Page 83: ...rs continues RIGHT JST S3B ZR SM4A TF 3 ways side entry PIN Description Controller in out V ref I max Connected to 1 Right operator presence sensor supply out 0V 1A S2 1 2 Right operator presence sensor supply out 5V 1A S2 2 3 Right operator presence sensor input In 0V 1A S2 3 1 2 3 1 2 3 Figure 28 ...

Page 84: ...chanisms are integrated in the gear motor unit Drive model and the rear frame Reference to the Figure Deck raising levers Frame integrated in the drive motor Front wheels Rear pivoting wheels support frame with squeegee raising lowering system Figure 1 Drive gear motor with integrated frame Rear pivoting wheels support frame with squeegee raising lowering system Brush deck raising levers ...

Page 85: ...ption The machine wheel system without drive system consists of front wheels and a pair of pivoting rear wheels The front wheel system is the main machine support and pivot of the lifting and lowering brush deck mechanism Component Locations Figure 1 Pivoting rear wheels Front wheels ...

Page 86: ...heel diameter 3 1 in 80 mm Rear wheel specific pressure on the floor 116 psi 0 8 N mm2 Maximum gradient when working 2 Machines have been tested under the following conditions Battery maximum size Battery Maximum brush and squeegee size Full detergent tank Optional equipment installed Wheel weight checked Print on the floor checked on cement for each single wheel Result expressed as maximum value ...

Page 87: ...not any failure this safety feature is not visible to the user because of the Drive wheels controller EB3 is turned on as soon as the user turns on the Ignition Key K1 but the Operator presence sensor signals are given to the Drive wheels controller EB3 only after the Main machine controller EB1 is turned on pushing the Main button So if the user turn on the machine pushing the Main button with on...

Page 88: ...CH SW1 KEY 2 Key input KEY 1 Key output B 24V POWER B 24V POWER 24 Potenza B 0V POWER 0V M1 24V 24V 0V M2 Positive forward speed motor output Negative forward speed motor output J1 1 J1 2 J1 3 J1 13 12V WIPER 0V REV DIRECTION J1 14 HI POT INPUT C POT INPUT LO POT INPUT BACKWARD SWITCH COMMON HIGH 24V J1 15 KEY IN KEY INPUT J1 12 FORWARD SWITCH DRIVE ENABLE D 2 Drive system enable output B 0V M4 DR...

Page 89: ...89 Service Manual SC401 SCRUBTEC 344 20 Wheel System Traction Component Locations Driving wheels Gear motor unit M3 Rear pivoting wheel Figure 2 Drive wheels controller EB3 ...

Page 90: ...a level floor or on a hoisting system to facilitate the procedures 2 If equipped remove the ignition key then disconnect the red battery connector 3 Under the machine check and clean the drive motor A by using compressed air nozzle B from the dirt dust that could compromise its correct function overheating overvoltage ect Figure 3 B A ...

Page 91: ...4 20 Wheel System Traction Drive Wheels Controller EB3 Parameters The parameters are accessible when connect the connector A of the ITALSEA programmer P N 1466207000 to the 4 way connector B on the Drive wheels controller Figure 4 B A B ...

Page 92: ...function 0 CURRENT LIMIT Controller s current limit 35 RATED CURRENT Motor s rated current 10 OVERLOAD TIME Motor s overload time 10 5 J1 HW CONFIG Pin 5 J1 hardware config n c n o N O switch 6 J1 HW CONFIG Pin 6 J1 hardware config n c n o N O switch 11 J1 HW CONFIG Pin 11 J1 hardware config n c n o N O switch 2 J1 P up down Pin 2 J1 hardware config pull up down pull down active 5 J1 P up down Pin...

Page 93: ...Replace One or both Operator s presence sensors S1 S2 faulty Replace Main machine controller EB1 faulty Replace Drive wheels controller EB3 LEDs blinking alarms See the next paragraph Drive wheels controller EB3 faulty Replace Wiring damaged Check all connections inside the electrical component compartment included those of the Main machine controller EB1 and the Drive wheels controller EB3 Drive ...

Page 94: ... debris or damages preventing the drive system operation Turn off the machine using the Ignition key KEY and wait a few minutes for the system to cool down before turning it back on 6 flashes Inner power section fault Short circuit in power MOSFET upon Drive wheels controller start Check if there are any short circuits in the Drive motor wiring M4 Try to reset the machine if the alarm persists rep...

Page 95: ...y KEY 10 flashes Overvoltage Battery voltage over 35V Check battery voltage Turn off the machine using the Ignition key KEY 11 flashes Drive motor overload Drive motor current higher than 10 Amp for an excessive period of time the maximum time depends negatively from the overload entity Check if there is debris or damages preventing the drive system operation Do not use the drive system on sloping...

Page 96: ...e Drive system gear motor Figure 6 A B 4 Rotate the Speed adjuster at maximum speed 5 Switch on the machine and activate the drive motor with at least one hand on the Operator s presence sensor 6 Check that the current draw is included between 1 5 and 2 5A at 24V 7 Release the Operator s presence sensor 8 Switch off the machine and remove the amperometric clamp 9 If the amperage is higher perform ...

Page 97: ...y connector 2 Unscrew the 4 screws and remove the electronic component compartment cover 3 Unscrew the 2 screws A and pull out the Drive wheels controller B with his support bracket 4 Disconnect the following connections C 16 ways J1 MOLEX connector D Grey M2 Drive motor faston E Red M2 Drive motor faston F Black B supply faston G Red B supply faston Figure 7 C D E F G E F G D C B A ...

Page 98: ...CRUBTEC 344 20 Wheel System Traction Drive Wheels Controller EB3 continues 5 Unscrew the 2 screws H and cerefully remove the Drive wheels controller I Figure 8 H I H 6 Assemble the components in the reverse order of disassembly ...

Page 99: ...r on a hoisting system to facilitate the disassembly procedures 2 If equipped remove the ignition key then disconnect the red battery connector 3 Remove the squeegee 4 Lift the recovery tank and remove the batteries 5 Turn the machine A upside down CAUTION Use suitable protections on the support areas and secure the machine 6 Remove the 2 covers B and unscrew the 2 fastening screws C then remove t...

Page 100: ... 2 circlips G 8 Unscrew the 3 screws H from the brush deck levers and retrieve the bushings 9 Remove the clamp I and disconnect the Drive system gear motor J 10 Unscrew the 4 screws K and retrieve the washers then remove the Drive system gear motor L Figure 10 K J I K L E F H H H G 11 Assemble the components in the reverse order of disassembly ...

Page 101: ...els Controller EB3 Connectors FASTON PIN Description Controller in out V ref I max Connected to B Vbatt In 24V 35A BAT B Vbatt In 0V 35A BAT Figure 11 FASTON PIN Description Controller in out V ref I max Connected to M1 Drive output Out 0V 15V 20A M2 Drive output Out 24V 0V 20A Figure 12 ...

Page 102: ...Connectors continues MOLEX MINIFIT PIN Description Controller in out V ref I max Connected to 1 Brush output POT Out RV1 1 2 Brush output POT IN In RV1 2 3 POT Out RV1 3 4 5 6 7 8 9 10 11 12 Drive enable In EB1 D 2 13 Reverse direction In SW1 14 Output Out SW1 15 Key input In KEY 16 Figure 13 ...

Page 103: ...ower supply 24 15 V No functions B Black Main machine controller power supply 0 00 V No functions Power Supply Figure 15 PIN Color Description Measured Comments M1 Red Main machine controller power supply 9 05 V Min Forward speed 17 10 V Mid 24 07 V Max 9 05 V Min Reverse speed 9 15 V Mid 4 72 V Max M2 Black Main machine controller power supply 9 05 V Min Forward speed 17 10 V Mid 24 07 V Max 9 05...

Page 104: ...Measured Comments 1 Red Brush output POT 13 82 V B 2 White Brush output POT IN 0 V Vref PIN 3 Min speed 13 38 V Vref PIN 3 Max speed 3 Blue POT 0 44 V B 12 Green Drive enable 0 0 V No enable B 4 95 V Enable B 13 Black Yellow Reverse direction 0 00 V No reverse B 23 26 V Reverse B 14 Violet Output 23 35 V Machine ON B 15 Black Orange Key input 23 72 V Machine ON B ...

Page 105: ... gearmotor technical data Power 0 2 hp 150 W Voltage 24V Transmission ratio 13 1 RPM shaft 110 20 rpm Protection class UL RECOGNIZED Insulation class F Drive speed variable 0 3 1 mi h 0 5 km h Maximum gradient when working 2 Machines have been tested under the following conditions Battery maximum size Maximum brush and squeegee size Full detergent tank Optional equipment installed Wheel weight che...

Page 106: ...t is responsible for the user interface as it contains all control buttons and the indicator LEDs and is connected to the two Operator presence sensors S1 S2 on the handlebars All information from and for the user is exchanged with the Machine Main Controller EB1 via I2C protocol Main power relay ES1 controlled by the Main machine controller EB1 it powers the electronic board power circuits only a...

Page 107: ...ed by over discharging The voltage threshold where loads are turned off depends on the battery type See table below Significant Levels for Machine Operation Level Battery status LEDs Voltage in WET setting Voltage in GEL setting CONSEQUENCE B V B V A 23 5 23 5 B 23 0 23 2 C 22 5 22 9 D 22 0 22 6 E 21 4 22 2 F 20 4 21 6 Little remaining run time no block G 20 4 21 6 Brush and Vacuum system OFF 19 0...

Page 108: ...TROLLER EB1 MAIN MACHINE CONTROLLER RELAY ES1 MAIN MACHINE CONTROLLER RELAY ES1 BRUSH MOTOR FUSE F1 VACUUM MOTOR FUSE F2 IGNITION KEY KEY B KEY INPUT KEY 2 KEY 1 Key input Key output B R 2 B R 3 Power relay Power relay 0V PTC FUSE B R 1 24V LOGIC Power supply permanent B 24V POWER OUT2 B 0V OUT1 Brush output Vacuum output uP B MAIN MACHINE CONTROLLER EB1 KEY 2 BASE MACHINE WITHOUT BATTERY CHARGER ...

Page 109: ...TEC 344 24 Electrical System Battery Component Locations Figure 2 Battery charger CH Main machine controller EB1 Main machine controller relay ES1 Drive motor fuse F1 Figure 3 Batteries BAT Battery connections Battery red connector ...

Page 110: ...nds the battery symbol LED flashing Figure 4 GEL AGM WET 2 If the setting is to be changed press the vacuum button for 3 seconds 3 Within 3 seconds shortly press the vacuum button to select a new setting 4 Wait 3 seconds for the battery symbol to display the battery charge status Note This procedure sets only the low voltage cut out threshold values and not the charging profiles In order to set th...

Page 111: ...tion 1 If equipped remove the ignition key then disconnect the red battery connector 2 Unscrew the 4 screws A and remove the electronic component compartment cover B 3 Unplug the connection of the on board battery charger 4 Unscrew the 4 screws C and remove the on board battery charger D Figure 5 A C D A C A C C B A ...

Page 112: ...es ON ON OFF 2 flashes of GREEN Gel for generic Gel and AGM batteries ON OFF ON 2 flashes of RED and GREEN AGM for DISCOVER AGM batteries ON OFF OFF 2 flashes of YELLOW and GREEN OPTIMA for OPTIMA batteries OFF ON ON 2 flashes of YELLOW Gel for EXIDE SONNENNSCHEIN Gel batteries DEFAULT OFF ON OFF 2 flashes of RED and YELLOW AGM for FULLRIVER AGM batteries The LED CODE is shown by the battery charg...

Page 113: ...nd carefully lift the recovery tank 4 The machine is supplied with cables suitable to install two 12 V batteries 5 Carefully lift the batteries up to the compartment then install them correctly 6 Route and install the battery cables as shown in the diagram then tighten the nut on each battery terminal 7 Place the protection cap on each terminal then connect the red battery connector 8 Carefully lo...

Page 114: ...y fluid leakages The battery fluid is corrosive If it comes in contact with skin or eyes rinse thoroughly with water and consult a physician 1 Raise the recovery tank 2 For WET batteries only Check the level of electrolyte inside the batteries If necessary unscrew the caps and top up 3 When the correct level is restored close the caps and clean the tops of the batteries Charging the Batteries with...

Page 115: ... connected to the electrical mains all machine functions are automatically cut off 2 If the RED LED A on the on board battery charger inspection window stays on the on board battery charger is charging the batteries 3 When the YELLOW LED B turns on the battery charging cycle is nearly completed 4 When the GREEN LED C turns on the battery charging is completed Figure 9 A B C 5 When the battery char...

Page 116: ...d remove the electronic component compartment cover 3 Check replace the following Relay or Fuses ES1 Relay 24V Main machine controller relay A F1 30A blade fuse Drive motor fuse B 4 Unscrew the 2 screws C and pull out the Main machine controller D with his support bracket to check replace the following Fuses F2 30A blade fuse Brush motor fuse E F2 30A blade fuse Vacuum motor fuse F Figure 10 A B E...

Page 117: ... not working The batteries BAT flat or connections sre faulty Charge the batteries or clean the connections The batteries BAT are broken Check the battery no load voltage The relay ES1 is broken Replace The on board battery charger CH is broken Replace The wiring harness is cut or pressed or short circuited Repair Note A damage to the on board battery charger or its connections can prevent the mac...

Page 118: ...1 4 J201 3 J201 2 J201 1 KEY 2 KEY 1 Key input Key output B R 2 B R 3 Power relay Power relay 24V 24V 24V 24V 24V CLICK OFF TRCK 1 0V 0V 0V 0V 0V 0V PTC FUSE B R 1 24V LOGIC Power supply permanent B 24V POWER 0V OUT1 OUT2 OUT2 AUX1 1 AUX1 2 AUX2 1 AUX2 2 AUX4 1 AUX4 2 B 0V h M3 M2 M1 OUT1 Brush output Brush output Vacuum output Vacuum output Solution valve output Solution valve output Detergent pu...

Page 119: ...EY INPUT J1 12 FORWARD SWITCH DRIVE ENABLE OUT2 AUX1 1 AUX1 2 AUX2 1 AUX2 2 AUX4 1 AUX4 2 D 2 Drive system enable output B 0V h M3 M2 M1 M4 OUT1 Brush output Brush output Vacuum output Vacuum output Solution valve output Solution valve output Detergent pump output Detergent pump output Hourmeter output Hourmeter output 3 TRCK 2 24V GUA 5 KEY ON GUA 6 BRUSH ON GUA 7 VACUUM ON GUA 9 DRIVE ON GUA 10 ...

Page 120: ...rger Battery compartment size 13 8 x 13 8 x 10 2 in 350 x 350 x 260 mm Standard batteries q ty 2 Advance 98 Ah C20 GEL 105 Ah C20 WET Nilfisk 12V 76 Ah GEL MONOBLOC Standard battery run time standard batteries EN 60335 2 72 2 5 h On board battery charger Input voltage 100 240 Vac 50 60 Hz 3 5A Output voltage 24V 10A Efficiency 90 Efficiency 85 Output ripple 150 mV Min Vbatt 2V Case protection IP20...

Page 121: ...f Main machine controller EB1 receives the commands from the User interface controller EB2 and powers directly all the machine services User interface controller EB2 it is responsible for the user interface as it contains all control buttons and the indicator LEDs and is connected to the two Operator presence sensors S1 S2 on the handlebars All information from and for the user is exchanged with t...

Page 122: ...oubleshooting See the other chapters for previously provided instructions for other electrical system components Trouble Possible Causes Remedy The machine is not working The power supply cable or plug is broken Replace the cable The Main switch SW1 is broken Replace ...

Page 123: ... J201 8 J201 7 J201 6 J201 5 J201 4 J201 3 J201 2 J201 1 EXT 1 EXT 2 EXT 11 EXT 3 EXT 4 EXT 6 L L L L 1 4 1 5 2 1 N PE BRUSH MOTOR VACUUM MOTOR EV 5V IGNITION 5V 0V SPI CS3 SPI MISO SPI MOSI SPI CLOCK uP uP Left op pres sensor supply Left op pres sensor supply Left op pres sensor input Right op pres sensor supply Right op pres sensor supply Right op pres sensor input Power button output Power butt...

Page 124: ...ual SC401 SCRUBTEC 344 24 Electrical System Cord Specifications Description Model SC401 SCRUBTEC 344 Total power draw EN 60335 2 72 1 0 kW IP protection class X4 Protection class electric I Power supply 230 V 50 60 Hz ...

Page 125: ...also a hole for draining any liquid in the battery compartment The solution flow is regulated by various timed ON OFF cycles according to the water flow rate regulation 0 3 The detergent pump follow different ON OFF timings depending on flow rate set and detergent percentage setting The solenoid valve and detergent pump operate only with the following inputs conditions Brush function on Operator s...

Page 126: ...ing water is set to 0 25 to change the setting perform press the Solution button for more than two seconds to perform the adjustment The set percentage depends on the relevant LED turned on on the battery symbol Figure 1 To change the setting or to reset it all LEDs off press Solution button to set the percentage Note The setting is stored 3 minutes after releasing all push buttons Detergent perce...

Page 127: ...on System Wiring Diagram SOLENOID VALVE EV1 DETERGENT PUMP M3 24V 24V 0V 0V B 24V POWER AUX1 1 AUX1 2 AUX2 1 AUX2 2 B 0V M3 Solution valve output Solution valve output Detergent pump output Detergent pump output MAIN MACHINE CONTROLLER EB1 Figure 2 ...

Page 128: ...0 Solution System Component Locations Figure 3 Water tank Garden plug Water removable filler hose Solution drain and level check hose Water tank front filler cap Figure 4 Peristaltic detergent pump M3 Bottle for detergent system Closing cap ...

Page 129: ...129 Service Manual SC401 SCRUBTEC 344 30 Solution System Component Locations continues Figure 5 Battery compartment liquid drain hole Figure 6 Solution filter Solution tap Solenoid valve EV1 ...

Page 130: ...hen disconnect the red battery connector 3 Drain the water tank with the level hose Then rinse the tank with clean water 4 Close the detergent solution tap A The tap A is closed when it is in position B 5 Remove the transparent cover C and the gasket D then remove the filter strainer E Wash and rinse them then refit them carefully onto the filter support F 6 Open the valve A Figure 7 A B F D E C ...

Page 131: ...overy tank 5 Unscrew the cap A from the detergent bottle B 6 Remove the detergent bottle 7 Rinse and wash out the detergent bottle with clean water in the appointed disposal area Note For a thorough washing of the Detergent System the cleaning procedure can also be performed with the detergent bottle full of water Turn on the system with the flow set to the maximum It is advisable to perform this ...

Page 132: ...f the liquid Clean the hoses The solution reaches the brush also when the machine is off Presence of dirt or scale in solenoid valve EV1 Clean the solenoid valve Solenoid valve EV1 broken Replace the solenoid valve The Detergent system is not reaching the brush or is not arriving in sufficient quantity The hydraulic circuit upstream of the detergent pump is not triggered Check if the hose is fille...

Page 133: ...2 If equipped remove the ignition key then disconnect the red battery connector 3 Close the detergent solution tap 4 Unscrew and disconnect the connection A on the solenoid valve B 5 Disconnect the detergent supply hose C and D from the solenoid valve 6 Unscrew the two screws E then remove the solenoid valve B Installation 7 Assemble the components in the reverse order of disassembly Figure 9 E A ...

Page 134: ...emove only the head of the detergent pump a Disconnect the tank hose C and brush hose D b Remove the head of the detergent pump E to the detergent pump motor 7 For remove the detergent pump a Disconnect the connectors F tank hose C and brush hose D b Unscrew the two screws G and remove the detergent pump H Installation 8 Assemble the components in the opposite order to that they were removed in en...

Page 135: ...0 L m Detergent pump technical data Voltage 24 V Current DC 90 150 mA Nominal flow 55 ml min Insulating class H Detergent bottle capacity 0 26 US gal 1 liters Detergent System detergent percentage 0 25 2 0 Description Model SC401 SCRUBTEC 344 CORD Solution tank capacity 12 US gal 45 liters Solution flow values 0 08 0 18 0 53 gpm 0 3 0 7 2 0 L m Detergent pump technical data Voltage 230 V Protectio...

Page 136: ...h motor If the motor current reaches the value stored in the parameter VS1 and the overload persists the brush motor will stop following a delay which varies on the basis of the extent of the overload To start scrubbing again after a brush stop due to overload turn the machine off Then restart the machine by inserting the ignition key To work properly the brush motor M1 needs the following Brush f...

Page 137: ...n This system prevents the brush from reaching an excessive rotation speed and additionally reduced energy consumption of smooth floors The system operates as follows if the brush motor current absorption is lower than the parameter Reduced brush consumption default 9 Amp the motor is powered at a voltage equal to the parameter Brush reduced voltage default 20V instead of the battery voltage The t...

Page 138: ... Manual SC401 SCRUBTEC 344 34 Scrub System Disc Wiring Diagram MAIN MACHINE CONTROLLER RELAY ES1 BRUSH MOTOR FUSE F1 BRUSH MOTOR M1 24V CLICK OFF B 24V POWER 0V OUT1 B 0V M1 OUT1 Brush output Brush output Figure 1 ...

Page 139: ...ual SC401 SCRUBTEC 344 34 Scrub System Disc Component Locations Figure 2 Brush deck support Brush Machine straight forward movement adjusting knob Disc brush deck Brush motor M1 Deck raising levers Figure 3 Drive hub ...

Page 140: ... the main button to start the machine 4 Press the main button LED on again 5 Lower the brush deck by pressing the pedal 6 To activate the brush engagement function press the vacuum button and the main button simultaneously for one second Removal 7 Press the main button LED off 8 Lift the brush deck by pressing the pedal 9 To activate the brush disengagement function press the vacuum button and the...

Page 141: ... on a hoisting system to facilitate the procedures 2 If equipped remove the ignition key then disconnect the red battery connector 3 Under the machine check and clean the brush motor A by using compressed air nozzle B from the dirt dust that could compromise its correct function overheating overvoltage ect Figure 5 A B ...

Page 142: ...Control System chapter General system alarms paragraph Brush motor carbon brushes worn Replace Presence of bulky debris or string around the brush or between the brush and attachment flange Remove the brush and clean it Faulty brush motor Repair or replace Wiring damaged Repair The brush disengagement system does not work Main machine controller EB1 faulty Replace User interface controller EB2 fau...

Page 143: ... motor 8 Activate the brush by the presence sensors F then check that the brush motor current draw is between 1 and 2A at 20V 9 Deactivate the brush by releasing the presence sensors and raise the brush deck 10 Remove the Amp clamp D 11 If the amperage is higher or unexpeted perform the following procedures to detect and correct the abnormal amperage Check the brush motor carbon brushes Remove the...

Page 144: ...sembly procedures 2 Remove the brush 3 Switch off the machine and disconnect the battery connector 4 Lower the brush deck by pressing the pedal 5 Under the machine disconnect the detergent supply hose A from the detergent filter B 6 Unscrew and disconnect the connection C on the solenoid valve D 7 Remove the screws E F and G of the levers then retain its bushings Figure 7 C D G F E A B ...

Page 145: ... Remove the tie cable to release the motor harness 10 Unscrew the 2 retaining nuts I J and disconnect the brush motor power supply cables 11 Extract the brush deck K from beneath the solution tank Figure 8 H I J K Installation 12 Assemble the components in the opposite order they were removed in ensuring the brush motor power supply cable polarities are correct ...

Page 146: ...ts B with the lead in wires 5 Disengage the tabs C and remove the carbon brushes D 6 Check the carbon brushes D for wear The carbon brushes are worn out when They do not make sufficient contact with the armature of the brush motor due to their wear When their contact surface is not intact When the residual stroke is below 0 12 in 3 mm When the thrust spring etc is broken 7 Replace the carbon brush...

Page 147: ...its washers 3 Use two little crowbar B for remove the brush hub C to the brush motor pin 4 Recover the key D 5 Remove the screws E 6 Remove the brush motor F Assembly 7 Assemble the components in the reverse order of disassembly Note Use the rubber hammer for mounting the brush hub C Note For further information on deck components see the Spare Parts List Figure 10 F A D C E B B C ...

Page 148: ...electrical mains 2 Lower the brush deck by pressing the pedal 3 Unscrew the 4 screws A and remove the cover B 4 Unscrew the screw C for disengage the brown wire D 5 Unscrew the screw E for disengage the blue wire F 6 Lift the harness G to the box 7 Unscrew the screw H and remove the Electronic capacitor I Replacing 8 Assemble the components in the reverse order of disassembly Figure 11 I G H A F B...

Page 149: ...ctrical mains 2 Lower the brush deck by pressing the pedal 3 Unscrew the 4 screws A and remove the cover B 4 Unscrew the screw C for disengage the brown wire D 5 Unscrew the screw E for disengage the blue wire F 6 Lift the harness G to the box 7 Unscrew the screw H and remove the Electronic capacitor I Replacing 8 Assemble the components in the reverse order of disassembly Figure 12 I G H A F B D ...

Page 150: ...rom the floor when lifted 1 6 in 40 mm Brush motor power 0 6 hp 450 W Brush rotation speed 140 rpm Protection class IP 20 Insulation class F Description Model SC401 SCRUBTEC 344 CORD Cleaning width 17 in 430 mm Brush pad diameter 17 in 430 mm Brush pressure 66 lb 30 kg Brush deck right left offset 65 15 mm 2 5 0 6 in Brush distance from the floor when lifted 1 6 in 40 mm Brush motor power 1 hp 750...

Page 151: ...it system allows for squeegee immediate removal The squeegee can be raised and lowered by the operator using just their foot on the squeegee support footrest thanks to a mechanism consisting of two levers and a spring The angle of the squeegee and the correct adherence of the blades on the floor can be adjusted with a knob The front blade has an opening in the bottom edge so the squeegee can colle...

Page 152: ...CRUBTEC 344 38 Squeegee System Component Locations Figure 1 Squeegee adjusting knob Lower squeegee support Mounting handwheels Squeegee lifting lowering pedal Spring Squeegee blades Impact deflection wheel Upper squeegee support ...

Page 153: ... because there may be sharp debris 1 Drive the machine on a level floor 2 Ensure that the machine is off and the ignition key has been removed 3 Loosen the handwheels and remove the squeegee 4 Wash and clean the squeegee In particular clean the compartments A Figure 2 and the vacuum hole B Check that the front blade C and the rear blade D are integral and free from cuts and lacerations if necessar...

Page 154: ...the blade according to the following procedure Using the tab F release and remove the elastic strap G from the fasteners H then turn or replace the rear blade D Install the blade in the reverse order of removal Fix the elastic strap G to the fasteners H starting from one side Constrain to the fastener one by one with the hand M blocking the elastic strap before the fastener and pulling with the ot...

Page 155: ...ent or non existent Squeegee or vacuum hose blocked or damaged Clean or repair replace The squeegee leaves lining on the floor or does not collect water There is debris under the blade Remove Squeegee blade lips damaged or worn Replace Squeegee not balanced Adjust with the relevant handwheel Squeegee will not raise Spring off seat Replace ...

Page 156: ...bly procedures 2 Remove the squeege from the squeegee support A then lower the squeegee support by slowly to the floor 3 Press lighly the spring B then remove it with its pair of spring plastic retainers Installation 4 Assemble the components in the reverse order of disassembly and note the following Mount the spring with its pair of spring plastic terminals as shown of the picture C Figure 4 A C ...

Page 157: ...157 Service Manual SC401 SCRUBTEC 344 38 Squeegee System Specifications Description Model SC401 SCRUBTEC 344 Squeegee width 28 3 in 720 mm ...

Page 158: ...through the recovery tank hose The automatic float in the vacuum grid stops vacuum system motor M2 from collecting any liquids When the automatic float closes and shuts down the vacuum system the vacuum system motor noise will increase and the floor will not be dried The vacuum system is activated automatically with the Main button It can then be managed independently via the Vacuum system button ...

Page 159: ...ervice Manual SC401 SCRUBTEC 344 40 Recovery System Wiring Diagram MAIN MACHINE CONTROLLER RELAY ES1 VACUUM MOTOR FUSE F2 VACUUM MOTOR M2 0V B 24V POWER OUT2 OUT2 B 0V M2 Vacuum output Vacuum output Figure 1 ...

Page 160: ...stem Component Locations Figure 2 Recovery tank cover Recovery tank Vacuum grid with automatic shut off float Container with debris collection grid Cover gasket Figure 3 Motor protection case Squeegee vacuum hose Recovery water drain hose Vacuum motor M2 ...

Page 161: ...oat C then clean it carefully and reinstall it 7 Remove the debris collection tank D and open its cover then clean it carefully and reinstall it on the vacuum hose 8 Check the condition of the tank cover gasket E Note The gasket E allows the creation of a vacuum in the tank which is necessary to suck up the recovery water 9 If necessary replace the gasket E by removing it from its housing F When f...

Page 162: ...2 faulty Replace Vacuum motor M2 faulty Check the amperage Suction of dirty water is insufficient or non existent Activation of automatic float shut off Drain the recovery tank Debris collection filter dirty Clean Vacuum grid with automatic float shut off dirty Clean Tank cover not correctly positioned Adjust Tank cover seal damaged or not working correctly Clean or replace Vacuum motor container ...

Page 163: ...e 7 Activate the vacuum by pressing the Vacuum system button to full power Led on 8 Activate the vacuum and check that the current draw of the vacuum motor is between 11 and 12 at 24V Stop the vacuum Remove the amp clamp A If the amperage is higher perform the following procedures to detect and correct the abnormal amperage Remove the vacuum system motor see the Container and vacuum motor disassem...

Page 164: ... Vacuum Motor Unit Removal 1 Switch off the machine and disconnect the battery connector 2 If present drain the recovery tank then lift it 3 Disconnect the connector A 4 Unscrew the 5 screws B and the tie cable C then remove the Vacuum motor unit D from the machine Figure 6 A D C B ...

Page 165: ...em motor unit as shown in the previous paragraph 2 At the workbench remove the terminals lock A from the connector B 3 With a little screwdriver C move the splane lock D for disengaging the terminals from the connector 4 Remove the two terminals E 5 Carefully slightly lift the splane lock D previously pressed to restore it Figure 7 A B C D D E E ...

Page 166: ...embly Assembly continues 6 Remove the external soundproofing support E from the internal soundproofing case F 7 Remove the ferrite G from the wire 8 Unscrew the 4 screw H Figure 8 E G H H H H F 9 Lift the outer container I out of the inner container J then extract the motor K Figure 9 K I J ...

Page 167: ...Assembly continues 10 Save the gaskets L and M Figure 10 M L 11 Remove the save the clamp N and the dividing sponge O then disconnect the connections P P Figure 11 O N 12 Clean the inside of the containers to remove any dirt which has accumulated and check all gaskets for wear replace if necessary ...

Page 168: ...st be positioned at 2 2 in 55 mm from the upper surface around the entire circumference Figure 12 Q R 2 2 in 55 mm 15 Connect the power connections S and position the gasket T below the vacuum system motor Check that the gasket is reassembled with the correct orientation 16 Position the sponge ring U flush against the clamp R Check that the wiring is inside the sponge ring and that the sponge is c...

Page 169: ...rt the vacuum system motor in the outer container as shown Y Figure 14 I X Y 20 Rotate the outer container with the vacuum system motor Check that the motor and gasket are positioned almost in line with the outer edge of the container 21 Fit the inner container J and fasten it with the 4 screws Figure 15 J 22 Reassemble the components of the Vacuum motor unit on the machine location ...

Page 170: ... SCRUBTEC 344 40 Recovery System Specifications Description Model SC401 SCRUBTEC 344 BATTERY Recovery tank capacity 7 9 US gal 30 liters Vacuum motor technical data 0 4 hp 280 W Vacuum circuit capacity 35 4 in H2 O 900 mm H2 O ...

Page 171: ...l SC401 SCRUBTEC 344 90 Options Description Illustration KEY KIT EU model only Switch ignition starter with cap Harness DETERGENT KIT EU model only Detergent Bottle Insert dry brake Cap Refill cap Hose Pump chemical mix ...

Page 172: ...ion UK EU Cable tie plug Charger battery Support battery charger Hardware COUNTER HOUR 24V KIT All version The hour counter displays the machine operating hours calculated with the machine turned on and at least one of the Operator Presence Sensors S1 S2 active Counter hour 24V Gasket for counter hour Harness counter hour ...

Page 173: ...e Manual SC401 SCRUBTEC 344 90 Options Description Illustration USB PORT KIT All version The USB socket enables to recharge an external device when the machine is turned on USB port Harness USB Clamp cable black ...

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