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BRUSHING SYSTEM

SERVICE MANUAL

ENGLISH

SC350

9098840000

13

BRUSHING SYSTEM

BRUSH MOTOR ELECTRICAL INPUT CHECK

WARNING!

This procedure must be performed by qualified personnel only.

Drive the machine on a level floor.

1. 

Remove the brush, as shown in the User Manual.

2. 

Place two wooden shims (A) under the side area of the deck as shown in the figure. Wooden shim thickness must be 40 mm.

3. 

WARNING!

Keep the wooden shims at an appropriate distance from the brush hub.

Turn the knob (32) to program (34).

4. 

Apply the amperometric pliers (A) on one cable (B) of the brush motor.

5. 

Turn on the brush by pressing the push-button (39) together with the levers (40), then check that the motor electrical input (C) 

6. 

is:

6 to 8 A at 12V

• 

Turn off the brush by releasing the levers (40).

7. 

Turn the knob (32) to “0”.

8. 

Remove the amperometric pliers (A).

If the electrical input is higher, perform the following procedures to detect and correct the abnormal input:

Check if there is dust or dirt (ropes, cables, etc.) on the brush hubs.

• 

Disassemble the motor (see the procedure in the relevant paragraph), and check the condition of all its components.

• 

If the above-mentioned procedures do not lead to a correct electrical input, the motor must be replaced (see the procedure in 

the relevant paragraph).

A

B

C

P100422

Summary of Contents for SC350

Page 1: ...SERVICE MANUAL 9098840000 Edition 1 2010 10 setting standards Printed in Italy SC350 ...

Page 2: ......

Page 3: ... VALVE DISASSEMBLY ASSEMBLY 11 TROUBLESHOOTING 12 WIRING DIAGRAM 12 BRUSHING SYSTEM 13 BRUSH MOTOR ELECTRICAL INPUT CHECK 13 BRUSH MOTOR DISASSEMBLY ASSEMBLY 14 BRUSH DECK DISASSEMBLY ASSEMBLY 15 TROUBLESHOOTING 16 WIRING DIAGRAM 16 RECOVERY WATER SYSTEM 17 VACUUM SYSTEM MOTOR ELECTRICAL INPUT CHECK 17 VACUUM SYSTEM MOTOR DISASSEMBLY ASSEMBLY 18 TROUBLESHOOTING 19 WIRING DIAGRAM 19 OTHER SYSTEMS 2...

Page 4: ...ENGLISH SERVICE MANUAL 2 9098840000 SC350 ...

Page 5: ...M Nilfisk Form Number 9098867000 SC350 User Manual Nilfisk Form Number 9098868000 SC350 Spare Parts List Nilfisk Form Number 9098869000 SC350 Quick Start Guide Nilfisk Form Number 9098866000 SAFETY The following symbols indicate potentially dangerous situations Always read this information carefully and take all necessary precautions to safeguard people and property SYMBOLS DANGER It indicates a d...

Page 6: ...ing and perform this procedure in well ventilated areas and away from naked flames WARNING Carefully read all the instructions before performing any maintenance repair procedure Before using the battery charger ensure that frequency and voltage values indicated on the machine serial number plate match the electrical mains voltage Do not pull or carry the machine by the battery charger cable and ne...

Page 7: ...e floor cleaning detergents wear suitable gloves and protections Do not allow the brushes to operate while the machine is stationary to avoid damaging the floor In case of fire use a powder fire extinguisher not a water one Do not tamper with the machine safety guards and follow the ordinary maintenance instructions scrupulously Do not allow any object to enter into the openings Do not use the mac...

Page 8: ...litres min SET2 0 5 litres min Brush pad holder motor speed 140 rpm Sound pressure level at workstation ISO 11201 ISO 4871 EN 60335 2 72 LpA 65 dB A 3dB A Machine sound pressure level ISO 3744 ISO 4871 EN 60335 2 72 LwA 84 dB A Vibration level at the operator s arms ISO 5349 1 EN 60335 2 72 2 5 m s2 Vacuum system motor power 200 W Brush pad motor power 240 W Maximum gradient when working 2 Battery...

Page 9: ...GENERAL INFORMATION SERVICE MANUAL ENGLISH SC350 9098840000 7 DIMENSIONS P100417 ...

Page 10: ...orking conditions which are to be defined by the person in charge of the maintenance For instructions on maintenance procedures see the following paragraphs SCHEDULED MAINTENANCE TABLE Procedure Daily after using the machine Weekly Every six months Yearly Squeegee cleaning Brush cleaning Tank and vacuum grid cleaning Squeegee blade check and or replacement Battery charging Screw and nut tightening...

Page 11: ... 2 Start up and program selection knob 3 Accessory and battery compartment cover 4 Cover latch 5 Can holder 6 Battery connection connector 7 GEL AGM battery 8 Battery charger 9 Battery charger cable 10 Battery charger cable holder 11 Brush pad holder deck 12 Brush deck gearmotor 13 Squeegee vacuum hose 14 Splash shield 15 Deck bumper wheels 16 Deck support wheels 17 Squeegee 18 Squeegee blades ass...

Page 12: ...um system activation 35 Machine switching off 0 36 Solution flow control switch 37 One drop minimum solution flow Two drops maximum solution flow Battery warning lights 38 Green warning light charged battery Yellow warning light semi discharged battery Red warning light discharged battery Machine start up enabling push button 39 Machine start stop levers 40 Handlebar inclination adjusting lever 41...

Page 13: ...disconnected 2 Remove the cover and the solution and recovery water tanks 3 Remove the solenoid valve power supply connector A 4 Disconnect the hoses B and C under the machine 5 Remove the screws D and recover the washers 6 Remove the solenoid valve E upwards 7 Assembly Assemble the components in the reverse order of disassembly and note the following 8 When assembling the solenoid valve E the sta...

Page 14: ...an open in the electrical connection replace the solenoid valve repair the 2 electrical connection There is debris in the solution tank clogging the output hole clean the tank 3 There is debris in the solution hoses and or reducer clogging the flow clean the hose 4 The solution reaches the brush also when the machine is off Possible causes There is dirt or calcium deposit on the solenoid valve gas...

Page 15: ...one cable B of the brush motor 5 Turn on the brush by pressing the push button 39 together with the levers 40 then check that the motor electrical input C 6 is 6 to 8 A at 12V Turn off the brush by releasing the levers 40 7 Turn the knob 32 to 0 8 Remove the amperometric pliers A If the electrical input is higher perform the following procedures to detect and correct the abnormal input Check if th...

Page 16: ...the battery connector is disconnected 2 Disconnect the gearmotor connector A and the detergent hose B 3 Lift the machine and remove the brush 4 Remove the screw C then remove the hub assembly D 5 Remove the 4 screws E 6 Remove the gearmotor F 7 Recover the key G 8 Assembly Assemble the components in the reverse order of disassembly 9 NOTE For further information on deck components see the Spare Pa...

Page 17: ...sh deck C 7 Check the rubber pads D for integrity if necessary replace them by removing the 3 nuts E 8 NOTE The rubber pads D allow the deck mechanical rotation by creating friction on the rotating brush Check the rubber joint F for integrity if necessary remove the 13 screws G recover the nuts flanges H and I and 9 replace it NOTE The rubber joint F absorbs blows and vibrations between the deck a...

Page 18: ... motor 1 Overvoltage of the gearmotor 2 One brush do not turn Possible causes The brush motor electromagnetic switch wiring harness is damaged repair 1 The brush motor electromagnetic switch ES1 is damaged replace 2 The brush motor fuse F1 is tripped reset 3 The motor is faulty repair or replace 4 The wiring harness is damaged repair 5 Malfunction of the brush deck mechanical rotation system Possi...

Page 19: ... pliers A on the cable B 2 Turn the knob 32 to program 35 3 Check that the motor electrical input is between 15 and 18 A at 12 V 4 Turn the knob 32 to 0 5 Remove the amperometric pliers B If the electrical input is higher than specified disassemble the vacuum system motor see the procedure in the relevant paragraph and check the condition of its moving parts If the procedure do not lead to a corre...

Page 20: ... washers and nuts 5 Remove the motor cover E and recover the gasket F 6 Remove the motor B and the acoustic insulation pipe G 7 Check the gasket F and the gasket H for efficiency If necessary replace 8 Assembly Assemble the components in the reverse order of disassembly and note the following 9 When installing the gasket I into the housing J turn it until the lower tooth K and upper teeth L are as...

Page 21: ...nk is full empty the recovery tank 1 The debris tray is clogged clean 2 The vacuum grid with automatic shut off float is dirty or the vacuum pre filter is dirty clean 3 The tank cover is not correctly positioned adjust 4 The tank cover gasket is not efficient replace clean 5 The vacuum system motor filter is dirty clean 6 The squeegee or the vacuum hose is clogged or damaged clean or repair replac...

Page 22: ...the machine on a level floor with the recovery tank empty 1 Turn the ignition key to 0 and disconnect the batteries 2 Carefully lift the tank assembly 3 Then check 4 Tightening of mounting screws and nuts Correct position of fasteners Visible faults in the components Leaks Carefully lower the tank assembly 7 ...

Page 23: ...l and AGM batteries ON OFF 2 flashes of RED GREEN IUIa AGM for DISCOVER AGM batteries OFF ON 2 flashes of YELLOW GREEN IUIa OPTIMA for OPTIMA batteries default OFF OFF 2 flashes of YELLOW IUIa GEL for EXIDE SONNENSCHEIN Gel batteries The LED code is shown by the battery status LEDs every time the charger is powered on before to start the charging cycle BATTERY CHARGER ADDITIONAL FUNCTIONS The batt...

Page 24: ...nic board ES1 Brush electromagnetic switch ES2 Vacuum system relay EV Solution solenoid valve F1 Brush resettable fuse F2 Vacuum system fuse 30 A F3 Selector fuse 5 A M1 Brush motor M2 Vacuum system motor SW1 Rotary function selector SW2 M1 EV enabling switch SW3 Solution rate switch T1 Solenoid valve timer BAT D2 D1 EB1 ES1 ES2 T1 EV F1 F3 F2 M1 M2 SW1 SW2 SW3 CH P100429 ...

Page 25: ...c switch ES2 Vacuum system relay EV Solution solenoid valve F1 Brush resettable fuse F2 Vacuum system fuse 30 A F3 Selector fuse 5 A M1 Brush motor M2 Vacuum system motor SW1 Rotary function selector SW2 M1 EV enabling switch SW3 Solution rate switch T1 Solenoid valve timer Colour codes BK Black BU Blue BN Brown GN Green GY Grey OG Orange PK Pink RD Red VT Violet WH White YE Yellow P100430 ...

Page 26: ...ndards Nilfisk Advance SpA Registered office Via F Turati 16 18 20121 Milano Administrative office Strada Comunale della Braglia n 18 26862 Guardamiglio Lodi Phone 39 0377 451124 Fax 39 0377 51443 www nilfisk com ...

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