Service Manual - Capital Equipment Hire
Contents
1. Product Code User Manual Spare Parts List Advance SC351 9087342020 9099867000 9099868000 Nilfisk SC351 9087340020 9099864000 9099865000 Nilfisk SC351 9087341020 These manuals are available at Local Advance or Nilfisk retailer Advance website www advance us com Nilfisk website www nilfisk com 4 Service Manual SC351 General Information Conventions Forward backward front rear left or right are intended with reference to the operator s position that is to say in driving position Service and Spare Parts Service and repairs must be performed only by authorised personnel or Advance Nilfisk Service Centers The authorised personnel is trained directly at the manufacturer s premises and has original spare parts and ac cessories Contact Advance or Nilfisk Retailer indicated below for service or to order spare parts and accessories specify ing the machine model and serial number Apply Retailer label here Serial Number Label The machine serial number and model name are marked on the plate see the example to the side Product code and year of production are marked on the same plate This information is useful when requiring machine spare parts Use the following table to write down the machine identification data P100771 MACHINE model o sets serre Ee EES EER een ee ee DE E EE EE cette PRODUCT NUMDER AE RE NE E EA EENE EENES MACHINE Serial number misa Serv2. ENABLIN PUSH BUTTON SW2 me VACUUM SYSTEM MOTOR M2 SOLENOIDVALVE TIMER RELAY KT1 en SOLUTION FLOW MOTOR M1 i SWITCH SV LED ELECTRONIC L g BOARD EB1 J HE 12 V BATTERY BAT 5 BRUSH MOTOR sis 31 RELAY K1 VACUUM SYSTEM MOTOR RELAY K2 Lg CONNECTOR C1 Y ed Nr EV BRUSH MOTOR RELAY K1 P100785 Service Manual SC351 Electrical System Specifications D ipti Advance Nilfisk Nilfisk PN SC351 SC351 SC351 full PKG Total absorbed power 42 A 0 5 kW Battery compartment size 17 8x6 9x9 4 in 350x175x240 mm Battery voltage 12V Standard batteries 12 V 85 AhC5 AGM 5 18455 iio AGM spiralcell Battery charger 100 240 VAC Work autonomy standard batteries 2 hour 1 hour Nilfisk Advance 29 Service Manual SC351 Recovery System Functional Description Recovery System 30 The water recovery system removes the dirty water from the floor and pipes it to a recovery tank When the machine is running the dirty water on the floor is collected by the sgueegee blades and collected through the slots in the same piped through the vacuum hose and into the tank by the airflow created by vacuum motor M2 The dirty water is piped into the recovery tank while the airflow continues to the vacuum fan The vacuum system motor M2 is supplied by the vacuum system motor relay K2 which is driven by the program selectio
3. Ld SWITCH SW3 ES SOLENOID VALVE EV P100806 49 Service Manual SC351 Solution System 50 Component Locations Solution tank Solenoid valve EV e Filler plug e Detergent hose e Detergent valve Filler plug Detergent valve Detergent hose Solenoid valve EV 8 P100807 Service Manual SC351 Solution System 51 Component Locations Continues Solenoid valve timer relay KT1 P200067 Service Manual SC351 Troubleshooting Trouble Possible Causes Solution System 52 Small amount of solution or no solution reaches the brush The valve between tank and solution hose is clogged dirty Clean The solenoid valve EV is faulty or the electrical connection is open Replace the solenoid valve or repair the electrical connection There is dust debris in the tank or in the detergent hoses obstructing the solution flow Clean the tank hoses SW2 are broken The function selector fuse F3 is open Replace The solenoid valve relay KT1 is broken Replace The program selection knob rotary switch SW1 is broken Replace The levers or the machine start up enabling push button Replace The solution leaks when the machine is off The solenoid valve EV is dirty broken Clean replace Service Manual SC351 Removal and Installation Solenoid Valve Disassembly Assembly Disassembly 1 Place the machine on a hoisting sy
4. Vacuum system motor relay K2 Brush motor fuse F1 Function selector fuse F3 Battery wiring harness Vacuum system motor fuse F2 Connector C1 Machine wiring Brush motor fuse F1 harness Solenoid valve timer AA relay KT1 Brush motor relay K1 2377 Vacuum system motor relay K2 P100782 Service Manual SC351 Electrical System 24 Maintenance and Adjustments Battery Installation 1 Open the cover and check that the battery connector is disconnected 2 Install the battery on the machine connect the terminals and fasten it with the relevant belt Warning This machine requires sealed lead batteries GEL or AGM technology Do not use batteries with liquid electrolyte or not sealed WET for any reason Warning Pay special attention when connecting the battery pins The red cable must be connected to the positive pin the black cable must be connected to the negative pin of the battery A wrong connection can damage the battery charger Battery Charger Setting and Dipswitch Configuration paragraph to set the proper N Warning The installed battery GEL AGM may require a specific charging algorithm See the charging algorithm for the installed battery 3 Connect the battery connector and close the cover 4 Charge the battery Battery charging S Note Charge the batteries w
5. Warning This procedure must be performed by qualified personnel only 43 Service Manual SC351 Brush Motor Amperage Check 1 Drive the machine on a level floor 2 Remove the brush as shown in the User Manual 3 Place two wooden shims A under the side area of the deck as shown in the figure Wooden shim thickness must be 1 5 in 40 mm Warning Keep the wooden shims at an appropriate distance from the brush hub 4 Turn the knob on the brush activation program 5 Apply the amp clamp A on one cable B of the brush motor 6 Turn on the brush by pressing the push button 39 together with the levers 40 then check that the motor amperage C is 6 to 8A at 12 V 10 Scub Sytem Disc 44 Turn off the brush by releasing the levers 40 Turn the knob 32 to 0 Remove the amp clamp A If the amperage is higher perform the following procedures to detect and correct the abnormal amperage o Check if there is dust or dirt ropes cables etc on the brush hubs o Disassemble the motor see the procedure in the relevant paragraph and check the condi tion of all its components If the above mentioned procedures do not lead to a correct amperage the motor must be replaced see the procedure in the relevant paragraph P100796 Service Manual SC351 Removal and Installation Brush Deck Disassembly Assembly Disassembly 1 Place the machine on a hoisting system 1f
6. available then lift it Otherwise drive the machine on a level floor 2 Make sure that the battery connector is disconnected 3 Disconnect the vacuum hose from the squeegee A 4 Lift the machine and remove the brush 5 Remove the centre screw remove the hub assembly B and retrieve the transmission pin key C 6 Remove the 4 screws D the deck flange E and disassemble the brush deck F 7 Check the rubber pads G for integrity and replace them if excessively worn S Note The rubber pads G allow the Ca deck mechanical rotation by creating friction on the rotating brush 8 Check the end of stroke spacer tab H and replace it if necessary 9 Check the centre flange I and the relevant springs for integrity if necessary replace them EN Note The centre flange I absorbs ag blows and vibrations between the deck and the machine 10 Upon reassembly couple the centre flange with the deck to match the reference arrows J Scub Sytem Disc P100798 P100799 P100800 45 Service Manual SC351 Scub Sytem Disc 46 Brush Deck Disassembly Assembly Continues 11 Install the centre flange springs K by engaging them on the deck housings and on the centre flange housings L as shown in the figure Assembly 12 Assemble the components in the reverse order of disassembly and note the following o Couple the tooth M of the end of stroke spacer tab N and the deck flange
7. BUTTON SW2 BRUSH MOTOR Ul RELAY K1 BRUSH MOTOR RELAY K1 P100793 Service Manual SC351 Scub Sytem Disc 40 Component Locations Brush deck Machine straight forward movement adjusting Brush motor M1 handwheel Drive hub Deck rotation end of stroke system Machine forward speed adjusting handwheel Machine straight forward movement adjusting handwheel Brush motor M1 Machine forward speed adjusting handwheel Brush deck Drive hub Deck rotation end of stroke system P100794 Service Manual SC351 Scub Sytem Disc 41 Component Locations Continues Brush motor fuse F1 Brush motor relay K1 Brush motor fuse F1 Brush motor relay K1 gt 3 P100781 Service Manual SC351 Scub Sytem Disc 42 Maintenance and Adjustments Brush Cleaning Warning Itis advisable to wear protective gloves when cleaning the brush because there may be sharp debris 1 Remove the brush 2 Clean the brush with water and detergent 3 Check the brush bristles for integrity and wear if necessary replace the brush Machine Speed Adjustment cleaned and the choice of using the brush or the pad E Note The machine speed and forward movement vary according to the type of floor to be Ga If necessary perform the adjustments as shown 1 Remove the recovery and the detergent tanks 2 Adjust the machine speed with the handwheel A o Turn the handwheel counter cl
8. as shown in the figure o Assemble the brush deck by matching the deck flange polarization O with the one of the deck holder P AA Note For further information on deck Ga components see the Spare Parts List P100802 P100799 P100803 Service Manual SC351 Brush Motor Disassembly Assembly Disassembly 1 Place the machine on a hoisting system if available then lift it Otherwise drive the machine on a level floor 2 Make sure that the battery connector is disconnected 3 Disconnect the gearmotor connector A and the detergent hose B 4 Lift the machine and remove the brush 5 Disassemble the brush deck as shown by the previous procedure 6 Recover the key C 7 Remove the 4 screws D 8 Remove the gearmotor E Assembly 9 Assemble the components in the reverse order of disassembly FN Note For further information on deck Di Gad components see the Spare Parts List Scub Sytem Disc P100805 47 Service Manual SC351 Scub Sytem Disc 48 Specifications Description Advance Nilfisk Nilfisk SC351 SC351 SC351 full PKG Brush pad diameter 14 5 in 370 mm Brush pad pressure on the floor 39 6 Ib 18 Kg Brush pad pressure with full tank 59 5 Ib 27 Kg Brush motor power 0 32 hp 240 W Brush motor speed 140 rpm Nilfisk 2 Advance Service Manual SC351 Solution System Solution System Functional D
9. the fuse F3 The negative output of the battery charger B2 al lows function activation when battery level is suffi cient and the battery charger is not connected to the electrical mains Battery charge level LED display i Diagram of Output Activation according to the Position of the Switches SW1 SW2 and SW3 Program selection knob Machine start up Brush motor M1 Solenoid valve EV Vacuum system motor rotary switch SW1 enabling push button M2 settings SW2 settings with brush activation levers O Pressed released Off Off Off mm ZA Es Released Off Off On CO IU N Pressed On On On MT Es Released Off Off Off lt lt N Pressed On On Off mm ZA Released Off Off On CC IU Pressed On Off On Solution flow push button setting SW3 0 0 2 sec 2 sec 1 O Always ON Service Manual SC351 Control System 17 Component Locations e Handlebar with control panel Machine start up enabling push button SW2 Program selection knob rotary switch SW1 Solution flow switch SW3 LED electronic board EB1 Wiring harness Brush levers Handlebar inclination adjusting lever Machine start up enabling push button SW2 SW3 Solution flow switch Handlebar with control panel Brush levers Handlebar inclination and height adjusting E lever Fee Program selection knob rotary switch SW1 LED electro
10. 665 e ee Eo oe ee ee EEE 52 Remov l and Installation lt s s se e s vn ses Sek EE Sogo dd dae YR ee 53 Specinications BES eek Ak dd a dado OR ed a A 54 Squeegee System ee eee eee eee eee eee eee eee eee 55 Functional Description se sace SS aa SS a SS SS a a 55 Component Locations 1 rv vr erre rare kraner ran 56 Maintenance and Adjustments w sow sace da wona aa ea SS SS SS SS aa 57 Troubleshooting sors ac rest rv revner k kag Ea akan 59 Wheel System Non Traction e o 60 Component Locations aooaa a a eee eee SS Se 60 Vida e e zn Ar Gre A a de Wein SR kva Beek Be ay BSN amp ae ae 61 Service Manual SC351 General Information General Information Machine General Description The SC351 is a walk behind industrial machine designed to wash and dry floors in one pass The machine is powered by on board batteries The machine is equipped with disc brushes a controlled solution flow dosing system and a squeegee with blades integrated in the deck which vacuums and dries the floor Service Manual Purpose and Field of Application The Service Manual is a technical resource intended to help service technicians when carrying out mainte nance and repairs on the SC351 to guarantee the best cleaning performance and a long working life for the machine Please read this manual carefully before performing any maintenance and repair procedure on the machine Other Reference Manuals
11. 782 SW1 DP1 DP2 ON ON ON RED YELLOW GREEN LED LED LED OFF OFF P100783 SW1 LED CODES CHARGING CURVES DP1 DP2 BATTERY CHARGING LEDS on the control panel ON ON 2 flashes of the GREEN LED Charging algorithm for generic Gel and AGM battery ON OFF 2 flashes of the RED and GREEN LEDS Charging algorithm for AGM DISCOVER battery default for Advance model OFF ON 2 flashes of the YELLOW and GREEN LEDS Charging algorithm for OPTIMA battery default for Nilfisk model OFF OFF 2 flashes of the YELLOW LED Charging algorithm for EXIDE SONNENSCHEIN Gel battery The LED codes are shown by the battery charge indicators each time that the battery charger is turned on before the charging cycle starts Battery Charger Auxiliary Functions The battery charger is also used to 7 Check the battery voltage during machine operation 8 Display the battery charge level with the led electronic board EB1 9 Stop the machine operation when the battery is discharged 10 8 V 10 Disable the machine operation during battery recharging For this reason the following battery charger auxiliary contacts are used Bl ref 12 V Enabling input for machine start up B2 ref 0 V Output for machine function activation Service Manual SC351 Electrical System 26 Fuse Check and Replacement Fuses in the electric component box 1 Drive the machine on a level floor 2 Check that the function selection knob is turned to 0 and
12. SC351 Service Manual Advance SC351 9087342020 Nilfisk SC351 9087340020 9087341020 ONilfisk Advance trusted since 1906 English 2013 05 Form No 9099876000 Service Manual SC351 Table of Contents 2 Table of Contents General Information eee eee eee ee 4 Machine General Description 4 Service Manual Purpose and Field of Application eneen 4 Other Reference Manuals 4 Conventions ses aem aka da Ean a GE a a a a ER N an 5 Service and Spare Parts so da page wat a a a a laa 5 Serial Number Label eee SS SS SS SS 5 Safety N AA KON ET SA oh e Je be doe EO ER we A Be 6 Visible Symbols on the Machine vaar vr SS eee SS Se 6 Symbols an ome aen dt Gove EE ED EMS We ds decd er eh ae heats Gas th al on oren VR ag vet 6 General Instructions 6 Machine Lite 8 Machine Transportation 8 Machine Nomenclature know your machine eee ee ene 9 Control Panel saa ea coin EA Hede a a eb RG Ew 10 Service and Diagnostic Equipment 11 Technical Data 12 Dimensions on sete fee ROG SE A A RO ENS GE Hek 13 Maintenance oen 14 Scheduled Maintenance Table se aa eee eee 14 Chassis System 4 sveve a eee a dd da a a 15 Frame main part 15 Control System ee s eaten ea BES AS EE ti e SUE GS 16 Functional Description 16 Component Locations e s miis d a ieai SS ee 17 Removal and Installation ass e sw wu ses a Gab dae Ed ek 4 18 SPECIACA
13. TIONS sat a ee ai dad ia E dd ba ir ERG 21 Electrical SysteM ss eee 22 Functional Description eeen 22 ERA a s ke AE EES EO EN N AE EN Weak 22 Wiring Diagram os saa ek eeen 22 Component Locations ooo e e e e krakk rea 23 Maintenance and Adjustments eee a a 24 Troubleshootme ses sie ser ate se ae ee dele a BG Mk dag 27 General Wiring Diagram 28 Specifications 29 Recovery System 022 ant ei ee ee RR RR RR a 30 Functional Description 30 Warme Didgram e sn arn Ge ate hk bles Bh se a EA RA Won drie 30 Component Locations ooa een 31 Maintenance and Adjustments SS SS SS eee eee eee 33 Troubleshooting od een 35 Removaland Installation s sec wen a sa A aa 37 Specifications G42 ba eG a WE at A es 38 Service Manual SC351 Table of Contents 3 Scrub System Disc aas ne a a a a AR A 39 Functional Description 39 Wammes Diagram o a sioa Get a ld are A a 39 Component Locations ooo a en 40 Maintenance and Adjustments 22 eee a eee ra aa 42 Troubleshooting cse eae ecw aca de a aae ee 43 Removal and Installation s se we nar OA Be RR 45 Specifications 4 4 aen wa malmis a a RR ee ae GE a 48 Solution System sss as rt en as a o She E HEEL E ee 49 Functional Description sus sea ansi a a fr ne we Rw ar Se a 49 Wiring Diagram is sas boe der Ge hae ias vea HERE EDS 49 Component Locations 50 Troubleshooting s 44 BERE KS rea 605564
14. acuum Grid Cleaning 1 Drive the machine to the appointed disposal area 2 Check that the function selection knob is turned to 0 and disconnect the battery connector 3 Remove the cover A clean and wash the cover and the vacuum grid B with clean water 4 Drain the water from the tanks C and D and clean them 5 If necessary disassemble the grid B and remove the float E than clean with care and reinstall 6 Check the recovery tank cover gasket F for integrity J Note The gasket F creates an vacuum in the tank that is necessary for vacuuming the recovery water 7 If necessary replace the gasket F by removing it from its housing G on the cover When assembling the new gasket install the joint H in the area shown in the figure 8 Check that the seating surface I of the gasket F is clean and adequate for the gasket itself 9 Check the vacuum duct J and the gasket K carefully clean if necessary 10 Reinstall the recovery tank cover A Recovery System P100789 33 Service Manual SC351 Recovery System 34 Vacuum System Gasket Cleaning YA Note The gaskets L and M GE create vacuum in the system that is necessary for vacuuming the recovery water 1 Drive the machine on a level floor 2 Check that the function selection knob is turned to 0 and disconnect the battery connector 3 Open the cover A and check the vacuum system motor ga
15. and nuts 6 Remove the motor cover E and recover the gasket F 7 Remove the motor B and the acoustic insulation pipe G 8 Check the gasket F and the gasket H for damage If necessary replace Assembly 9 Assemble the components in the reverse order of disassembly and note the following o When installing the gasket I into the hous ing J turn it until the lower tooth K and upper teeth L are as shown in the figure o Install the motor B with the power supply contacts as shown in the figure M P100792 Service Manual SC351 Recovery System Specifications D ipti Advance Nilfisk Nilfisk SERE SC351 SC351 SC351 full PKG Recovery tank capacity 2 9 USgal 11 litres Vacuum system motor power 0 27 hp 200 W Vacuuming with closed inlet 27 7 in H O 710 mmH O Nilfisk Advance 38 Service Manual SC351 Scub Sytem Disc Scrub System Disc Functional Description The disc brush system can be started by the operator The disc brush turns counter clockwise The brush system when turning cleans washes the floor surface and assists machine forward movement The deck where brushes suitable for cleaning the particular type of floor are installed is the main part of the scrub system The brush deck is fixed and integrated in the machine with a support bracket The adjusting sys tems adjusts the forward speed while the handwheel on the
16. and accurate vacuuming of the water from the floor The 2 blades have different hardness Front blade with ruled side to convey the water towards the centre of the squeegee Rear blade smooth to collect the water and dry the floor All 4 functional edges of each blade can be used before replacing the blade itself The design and the central duct make it easy for the squeegee to clear the water Service Manual SC351 Squeegee System 56 Component Locations Squeegee Rear blade Rear elastic strap Front blade Front strap Squeegee Rear blade Rear elastic strap Front blade Front strap P100809 Service Manual SC351 Squeegee System 57 Maintenance and Adjustments Squeegee Cleaning V Note The squeegee must be clean ie and its blades must be in good conditions in order to get a good drying Caution Itis advisable to wear protective gloves when cleaning the squeegee because there may be sharp debris 1 Drive the machine on a level floor 2 Check that the function selection knob is turned to 0 and disconnect the battery connector 3 Fully turn the brush pad holder deck counter clockwise 4 Disconnect the vacuum hose A from the squeegee or Disengage the squeegee B from the deck Wash and clean the squeegee In particular clean the compartments C and the vacuum hole D Check the front blade F and the rear blade G for integrity cuts
17. and tears if necessary replace them see the procedure in the following paragraph Assemble the components in the reverse order of disassembly P100810 Service Manual SC351 Squeegee Blade Check and Replacement de Clean the squeegee as shown in the previous paragraph Check that the front blade E and the rear blade F are integral and free from cuts and lacerations if necessary replace them Check that the front edge G of the rear blade is not worn otherwise overturn the blade to replace the worn edge with an integral one If the other edges are worn too replace the blade as shown o Remove the fastening strap H by disengag ing it from the fasteners I Replace or overturn the rear blade F then reinstall the fastening strap Remove the fastening strap J by disengag ing it from the fasteners K Replace or overturn the front blade E then reinstall the fastening strap Squeegee System 58 Install the squeegee B by carefully inserting the hooks L and the vacuum hole M in the brush deck housings Connect the vacuum hose A to the squeegee P100811 Service Manual SC351 Squeegee System Troubleshooting Trouble Possible Causes Leaving streaks on floor There is debris under the blade Remove The squeegee blade edges are torn or worn Replace Nilfisk f Advance 59 Service Manual SC351 Wheel System Non Traction 60 Wheel System Non Trac
18. and the machine start up enabling push button SW2 con trols the vacuum brush motor relay K1 for the activation of the brush motor M1 and the vacuum system motor relay K2 for the activation of the vacuum system motor M2 The solenoid valve EV is controlled by the solenoid valve timer relay KT1 when the solution flow switch SW3 is turned to 0 minimum flow the timer is bypassed when the solution flow switch SW3 is turned to 1 maximum flow The battery charger CH supplies negative power to all the control relays only when the battery charge is suf ficient and the battery charger is not connected to the electrical mains The machine system is connected to the battery with the connector C1 Fuses The brush motor M1 is protected by the brush motor fuse F1 The vacuum system motor M2 is protected by the vacuum system motor fuse F2 The solenoid valve EV is protected by the function selector fuse F3 The battery charger CH has inner safety protections which are not accessible Wiring Diagram LED ELECTRONIC BOARD EB1 BATTERY CHARGER CH 12 V BATTERY BAT Fi CONNECTOR C1 CONNECTOR C1 P100781 Service Manual SC351 Electrical System 23 Component Locations Battery charger CH Vacuum system motor fuse F2 12V Battery BAT Function selector fuse F3 Connector C1 Brush motor relay K1 Battery wiring harness Solenoid valve timer relay KT1 Machine wiring harness
19. deck adjusts the machine straight forward drive The brush working pressure is functional to the machine designed balance The brush motor M1 is supplied by vacuum brush motor relay K1 which is driven by the program selection knob rotary switch SW1 when it is turned to 1 2 or 3 and the machine start up enabling push button SW2 is pressed The circuit is protected by the brush motor fuse F1 The system once activated uses the solution coming form the solution system to wash the floor To work properly the brush motor needs the following Program selection knob rotary switch SW1 turned to 1 2 or 3 Machine start up enabling push button SW2 pressed Charged batteries the red LED must not be flashing Battery charger is completing path to battery negative for B2 When necessary to use the squeegee in the opposite direction pry on the handlebar and slightly lift the deck while the brush is turning The rubber pads mounted into the deck allow the mechanical rotation by creating friction on the rotating brush When the deck is turned by 180 start to scrub dry by drawing the machine To resume working in the normal forward direction push the machine forward until the brush deck returns to the original position Wiring Diagram BRUSH MOTOR FUSE F1 FUNCTION SELECTOR FUSE F3 PROGRAM SELECTION KNOB ROTARY SWITCH SW1 BATTERY CHARGER CH BRUSH MOTOR M1 Q I an mm MACHINE START UP ENABLING Q PUSH
20. disconnect the battery connector 3 Open the cover and check one of the following fuses for deactivation or integrity o A brush motor fuse circuit breaker F1 35 A o B vacuum system motor blade fuse F2 30 A o C function selector blade fuse F3 5 A 4 Reset or replace any fuse after having checked and repaired any problem that caused deactivation 5 Close the cover P100784 Service Manual SC351 Electrical System Troubleshooting The machine is not working The battery connector C1 is not connected or broken Connect or replace it The 12V batteries BAT are discharged or its connections Charge the batteries or clean repair the are not efficient connections The 12V batteries BAT are broken Check the battery no load voltage The battery charger CH is broken Replace The function selector fuse F3 is open Replace The wiring harness is cut or pressed or short circuited Repair The program selection knob rotary switch SW1 is not Replace working The battery has been connected with inverted polarity Replace the battery charger Service Manual SC351 Electrical System 28 General Wiring Diagram BRUSH MOTOR FUSE F1 In VACUUM SYSTEM FUNCTION SELECTOR FUSE F3 MOTOR FUSE F2 CONNECTOR C1 PROGRAM SELECTION KNOB ROTARY SWITCH SW1 BATTERY CHARGER sd VACUUM SYSTEM A9 ne EE A A PRES ERAEN START UP DIODE me
21. e handlebar 31 9 in 50 in 810 mm 1 270 mm Machine width 18 5 in 470 mm Min max machine height with adjustable handlebar 550 1 000 mm 21 6 39 4 in Minimum turning radius 21 6 in 550 mm Cleaning width 14 5 in 370 mm Diameter of wheels on fixed axle 8 4 in 214 mm Wheel pressure on the floor 72 5 psi 0 5 N mm Brush pad diameter 14 5 in 370 mm Brush pad pressure with full tank 39 6 Ib 18 Kg 59 5 Ib 27 Kg Brush pad pressure on the floor Min max solution flow One drop 0 066 gpm 0 25 litres min Two drops 0 13 gpm 0 5 litres min Sound pressure level at workstation ISO 11201 ISO 4871 EN 60335 2 72 LpA 64 dB A 3 dB A Machine sound pressure level ISO 3744 ISO 4871 EN 60335 2 72 LwA Vibration level at the operator s arms ISO 5349 1 EN 60335 2 72 84 dB A 98 4 in s lt 2 5 m s Maximum gradient when working 2 IP protection class X4 Protection class electric Vacuum system motor power 0 27 hp 200 W Vacuuming with closed inlet 27 7 in H O 710 mmH 0 Brush motor power 0 35 hp 260 W Brush motor speed 140 rpm Total absorbed power 42 A 0 5 kW Battery compartment size 17 8x6 9x9 4 in 350x175x240 mm Battery voltage 12V Standard battery 12 V 84 AhC5 AGM EN pr AGM Battery charger 100 240 VAC Work autonomy standard battery 2 hour 1
22. e without supporting it with safety stands Machine Transportation N Warning Before transporting the machine make sure that All covers are closed The battery is disconnected The machine is securely fastened to the means of transport 8 Service Manual SC351 General Information 9 Machine Nomenclature know your machine ER Transparent cover with vacuum grid X Handlebar with SES Vacuum grid with pe control panel N automatic shut off float Le ES lt AR O Recovery tank i ASS 7 I 2 IS Battery charger cable holder i Battery Y connection f connector NY NY jf Deck A KG Q SS A ES CON Fuses Serial number plate technical data conformity certification Accessory and battery compartment cover closed Squeegee blades Y I i S Cover latch assembly PEN pe Solution tank filler plug Accessory and battery GEL AGM SP ad compartment cover battery ball Vacuum system open Battery charger d motor Brush pad holder deck lp 7 Rear wheels O CS on fixed axle Squeegee vacuum hose 7 Solution tank Brush deck gearmotor Brush rotation direction NS Brush deck wheels P100772 Service Manual SC351 General Information 10 Control Panel Program selection knob rotary switch Scrubbing program Scrubbing and drying program Brush activation brush solution flow activation Vacuum system activation Solution flow activation Machine sw
23. escription The solution system supplies the detergent to the brush when cleaning the floor The solution tank is also the main machine body There is a manual valve on the left side of the tank to close the water supply whenever maintenance must be performed on the machine The detergent quantity is adjusted by the operator with the solution flow switch SW3 The solution flows from the tank to the tap through the filter and solenoid valve EV and then to the brush deck The solenoid valve EV is driven by the program selection knob rotary switch SW1 when it is turned to 1 or 2 and the machine start up enabling push button SW2 When the solution flow switch SW3 is open the solenoid valve EV is driven by solenoid valve timer KT 1 2 sec ON 2 sec OFF When the solution flow switch SW3 is closed the solenoid valve EV is always on by pass the solenoid valve timer The circuit is protected by the function selector fuse F3 on the LED electronic board EB1 The solenoid valve EV opening and closing time according to the water flow are shown below Solution flow switch SW3 Solenoid valve EV ON time Solenoid valve EV OFF time setting 0 2 sec 2 sec 1 Always ON Wiring Diagram FUNCTION SELECTOR FUSE F3 PROGRAM SELECTION KNOB ROTARY SWITCH SW1 BATTERY CHARGER CH N I CD a faa SOLENOID VALVE TIMER KT1 MACHINE START UP ENABLING A PUSH BUTTON SW2 UU 1 gt 1 SOLUTION FLOW
24. ety stands Do not operate the machine near toxic dangerous flammable and or explosive powders liquids or vapours This machine is not suitable for collecting dangerous powders Keep the battery away from sparks flames and incandescent material During the normal opera tion explosive gases are released Battery charging produces highly explosive hydrogen gas Keep the cover open during battery charging and perform this procedure in well ventilated areas and away from naked flames 6 Service Manual SC351 General Information serious injuries damages to materials or equipments Caution Make sure to follow the safety precautions to avoid situations that may lead to 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 never use the battery charger cable as a handle Do not close a door on the battery charger cable or pull the battery charger cable around sharp edges or corners Do not run the machine on the battery charger cable Keep the battery charger cable away from heated surfaces Do not use the machine if the battery charger cable or plug is damaged If the machine is not working as it should has been damaged left outdoors or dropped into water return it
25. heduled maintenance The intervals shown may vary according to particu lar working 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 Daily after using the Every six Procedure machine months Battery charging Squeegee Cleaning Brush Cleaning Tank and Vacuum Grid Cleaning Squeegee blade check and or replacement Solution valve check and cleaning Brush deck rotation clutch check and or replacement Nilfisk Advance Chassis System 15 Service Manual SC351 Chassis System Frame main parts 1 Frame 2 Handlebar holder 3 Wheels on fixed axle Se WW MY WL WA Nilfisk Q Advance Service Manual SC351 Control System 16 Control System Functional Description The function control is performed with the program The LED electronic board EB1 is equipped with 3 selection knob rotary switch SWI the machine LEDs which indicate the battery charge level both start up enabling push button SW2 which must be during operation and while recharging used simultaneously with the brush levers and the solution flow switch SW3 The switch outputs controls the relevant outputs re lay K1 for brush motor relay K2 for vacuum sys tem motor solenoid valve EV The control circuit are protected by
26. hen the yellow or red LED turns on or at the end of each working Ga cycle Keeping the batteries charged make their life last longer Caution When the battery is discharged charge is as soon as possible as that condition makes its life shorter Check for battery charge at least once a week 1 Drive the machine on a level floor 2 Check that the function selection knob is turned to 0 3 Connect the battery charger cable to the electrical mains the electrical mains voltage and frequency must be compatible with the battery charger values shown on the machine serial number plate are automatically cut off The red or yellow warning light 37 is on when the battery S Note When the battery charger is connected to the electrical mains all machine functions Ga charger is charging the batteries 4 When the green warning LED stays on the battery charging cycle is over 5 When the battery charging is completed disconnect the battery charger cable from the electrical mains and wind it round its housing 6 Now the machine is ready to be used Manual attached E Note For further information about the operation of the battery charger see the relevant vr Service Manual SC351 Electrical System 25 Battery Charger Setting and Dipswitch Configuration To change the dipswitch configuration remove the round white cap near the openings see the illustration below with a screwdriver P100
27. hour Weight without battery and with empty tanks Gross vehicle weight GVW 92 6 Ib 42 Kg 97 0 Ib 44 Kg 176 Ib 80 Kg 97 0 Ib 44 Kg Shipping weight 171 9 Ib 78 Kg 105 8 Ib 48 Kg 154 3 Ib 70 Kg Machines have been tested under the following conditions o Battery maximum size o Maximum brush and squeegee size o Full clean water tank o Optional equipment installed o Wheel weight checked o Print on the floor checked on cement for each single wheel o Result expressed as maximum value for both front and rear wheels 12 Service Manual SC351 General Information 13 Dimensions oo ETD 17 in 432 mm i 17 in 432 mm 28 5 in 726 mm 18 7 in 475 mm 5 Y Sia gt P100774 Service Manual SC351 General Information 14 Maintenance The lifespan of the machine and its maximum operating safety are ensured by correct and regular mainte nance Warning Read carefully the instructions in the Safety chapter before performing any maintenance procedure The following tables provides the sc
28. ice Manual SC351 General Information Safety The following symbols indicate potentially dangerous situations Always read this information carefully and take all necessary precautions to safeguard people and property Visible Symbols on the Machine WARNING Carefully read all the instructions before performing any operation on the machine WARNING Do not use the machine on slopes with a gradient exceeding the specifications WARNING Do not wash the machine with direct or pressurized water jets mat l Symbols Danger It indicates a dangerous situation with risk of death for the operator Warning It indicates a potential risk of injury for people or damage to objects Caution It indicates a caution related to important or useful functions Note It indicates a remark related to important or useful functions a General Instructions Specific warnings and cautions to inform about potential damages to people and machine are shown below serious injuries A Warning Make sure to follow the safety precautions to avoid situations that may lead to Before performing any cleaning maintenance repair or replacement procedure turn the func tion selection knob to 0 and disconnect the battery connector This machine must be used by properly trained operators only Do not wear jewels when working near electrical components Do not work under the lifted machine without supporting it with saf
29. itching off 0 Drying program brush vacuum system activation Handlebar inclination adjusting lever pe R Brush levers Machine start up Brush levers enabling push button Battery charge LED indicators Solution flow switch P100773 Service Manual SC351 General Information 11 Service and Diagnostic Equipment Besides a complete set of standard meters the following instruments are necessary to perform fast checks and repairs on Nilfisk Advance machines Laptop computer charged with the current version of EzParts Adobe Reader and if possible Internet connection Digital Volt Meter DVM Amp clamp with possibility of making DC measurements e Hydrometer Battery charge tester to check 12 V batteries Static control wrist strap Dynamometric wrench set A copy of the User 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 Advance websites The following equipment is also available at Nilfisk Advance Centers Vacuum water lift gauge P N 56205281 Service Manual SC351 General Information Technical Data Description Advance Nilfisk Nilfisk P SC351 SC351 SC351 full PKG Solution tank capacity 2 9 USgal 11 litres Recovery tank capacity 2 9 USgal 11 litres Min max machine length at th
30. n knob rotary switch SW1 when it is turned to 1 or 3 The circuit is protected by the vacuum system motor fuse F2 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 in crease and the floor will not be dried When the recovery tank is full it must be emptied Wiring Diagram A MOTOR FUSE F2 PROGRAM SELECTION KNOB ROTARY SWITCH SW1 MN VACUUM SYSTEM MOTOR RELAY K2 neg VACUUM SYSTEM MOTOR RELAY K2 N VACUUM SYSTEM 7 MOTOR M2 VACUUM SYSTEM FUNCTION SELECTOR FUSE F3 BATTERY CHARGER CH ZIN 2333 a m P100786 Service Manual SC351 Recovery System 31 Component Locations Recovery tank Squeegee vacuum hose Vacuum system tank connection gasket Vacuum system motor M2 Recovery tank Squeegee vacuum hose Vacuum system tank connection gasket Vacuum system motor M2 P100787 Service Manual SC351 Recovery System 32 Component Locations Continues Transparent cover Vacuum system motor fuse F2 Vacuum grid with automatic shut off float Vacuum system relay K2 Cover gasket Vacuum grid with automatic shut off float Transparent cover Vacuum system motor fuse F2 Vacuum system relay K2 I Va Van I P100788 Service Manual SC351 Maintenance and Adjustments Tank and V
31. nic board EB1 P100777 Service Manual SC351 Control System 18 Removal and Installation LED Electronic Board EB1 Disassembly Assembly Disassembly 6 Disconnect the connector C of the LED i i electronic board D Remove the screws E and 1 Drive the machine on a level floor Make sure remove the LED electronic board D that the machine cannot move independently i un 7 If necessary disconnect the connector F and 2 Turn the machine program selection knob to 0 remove the solution flow push button G by 3 Disconnect the battery connector disengaging the inner tabs H 4 On the lower side of the handlebar with the control panel unscrew the screws A 5 Lower the upper side B of the handlebar with the control panel P100778 Service Manual SC351 Control System 19 LED Electronic Board EB1 Disassembly Assembly Continues 8 If necessary remove the selector assembly N of the machine program selection knob I as shown below Disconnect the connectors J On the outer side turn the knob 1 on the position K vacuum system activation Loosen the threaded dowel inside the housing L then remove the knob I from the housing Remove the screws M and from the inside remove the selector assembly N of the knob I Assembly 9 Assemble the components in the reverse order of disassembly P100779 Service Manual SC351 Control System 20 Machine Enabling Pu
32. ockwise to increase the machine speed o Turn the handwheel clockwise to decrease the machine speed 3 Ifitis difficult to keep the machine moving in a straight line because it deviates to the left or to the right adjust the handwheel B by turning it clockwise or counter clockwise 4 After adjusting install the tanks 5 With the machine ready to operate perform hands on tests of the machine and if other adjustments are necessary repeat steps 1 to 4 Pou AN 0 FN 7 P100795 Service Manual SC351 Scub Sytem Disc Troubleshooting Open Circuit The Brush motor fuse F1 determines an open in the supply circuit of the brush deck motor This protects the circuits from being damaged under overload conditions The open in the fuse can be caused by the following Short circuit in the brush motor wiring harness fault in the motor Trouble Possible Causes The brush does not clean properly Replace The brush is excessively worn The brush does not turn The motor is faulty Check the motor amperage replace There are ropes or debris restraining the brush rotation Remove and clean The Brush motor fuse F1 is open Replace The brush motor relay K1 is damaged Replace The program selection knob rotary switch SW1 is broken Replace The levers or the machine start up enabling push button SW2 are broken Replace
33. recovery hose with a gauge Note GE 1 Disconnect the vacuum hose from the squeegee 2 Turn the knob on the number 3 working program 3 With the gauge verify that the value is 27 7 in H O 710 mmH O For the particular shape of the end vacuum hose not circular this operation is to be performed with a suitable rettangular support mounted on the gauge P100791 Service Manual SC351 Recovery System 36 Vacuum System Motor Amperage Check 1 Remove the solution and recovery water tanks Apply the amp clamp A on the cable B Turn the knob on the working program Check that the motor amperage is between 15 and 18 A at 12 V 2 3 4 5 Turn the knob to 0 6 Remove the amp clamp B 7 If the amperage is higher than specified disassemble the vacuum system motor see the procedure in the relevant paragraph and check the condition of its moving parts go If the procedure does not lead to a correct amperage it is necessary to replace the motor 9 Reinstall the solution and recovery water tanks P100791 Service Manual SC351 Removal and Installation Recovery Sysiem 37 Vacuum System Motor Disassembly Assembly Disassembly 1 Remove the solution and recovery water tanks 2 Make sure that the battery connector is disconnected 3 Disconnect the 2 electrical connectors A for the motor B 4 Remove the acoustic insulation panel C 5 Remove the screws D recover the washers
34. sh Button Disassembly Assembly SW2 Disassembly 1 2 3 4 5 6 7 8 9 Drive the machine on a level floor Make sure that the machine cannot move independently Turn the machine program selection knob to 0 Disconnect the battery connector red On the lower side of the handlebar with the control panel unscrew the screws A Move the upper side B of the handlebar with the control panel Remove the screws C and move the lower side D of the handlebar from the frame E Disconnect the connectors F of the brush enabling push button G Remove the screws H and remove the switch G If necessary remove from the housing the enabling push button 1 of the switch G 10 Ifnecessary remove the brush levers J from the housing Assembly 11 Assemble the components in the reverse order of disassembly P100780 Service Manual SC351 Specifications LED electronic board connector EB1 JA 4 way vertical Tyco Modu II type PIN Description Electronic board V ref I max in out 1 Common cathode LED power supply in OV lt 1A 2 RED anode LED power supply in 0 7V lt 1A 3 YELLOW anode LED power supply in 0 7V lt 1A 4 GREEN anode LED power supply in 0 7 V lt 1A Nilfisk Advance Control System 21 Service Manual SC351 Electrical System 22 Electrical System Functional Description The program selection knob rotary switch SW1
35. sket L for integrity 4 If necessary replace the gasket by removing it from its housing 5 Remove the recovery tank C 6 Check the recovery water duct gasket M for integrity If necessary replace the gasket 7 Clean with care and reinstall gt nr les a I ED oe Lp gt 3 i Sy t P100790 Service Manual SC351 Troubleshooting The vacuum system motor M2 does not turn on The program selection knob rotary switch SW1 is broken Recovery System 35 Replace The vacuum system motor M2 is faulty Check the amperage Replace The vacuum system motor fuse F2 is open Replace The vacuum system motor relay K2 is broken Replace The recovery water vacuuming is insufficient or there is no vacuuming The vacuum grid with automatic shut off float is activated because the recovery tank is full Drain the recovery tank The vacuum grid is dirty Clean The transparent cover is not properly positioned Adjust The tank cover gasket is not sealing Clean replace The vacuum system motor filter is dirty Clean The vacuum gaskets are damaged or do not match perfectly Repair or replace The squeegee or the vacuum hose is clogged or damaged Clean repair replace Warning This procedure must be performed by qualified personnel only Measure the vacuum suction at the end of the
36. stem 1f available then lift it Otherwise drive the machine on a level floor Make sure that the battery connector is disconnected Remove the cover and the solution and recovery water tanks Remove the solenoid valve power supply connector A Disconnect the hoses B and C under the machine Solution System 53 6 Remove the screws D and recover the washers 7 Remove the solenoid valve E upwards Assembly 8 Assemble the components in the reverse order of disassembly and note the following o When assembling the solenoid valve E the stamped arrow F must be tuned in the direction of the solution flow as shown in the figure P100808 Service Manual SC351 Solution System 54 Specifications Description Advance Nilfisk Nilfisk p SC351 SC351 SC351 full PKG Solution tank capacity 2 9 USgal 11 litres One drop 0 066 gpm 0 25 litres min Minder solution NOW Two drops 0 13 gpm 0 5 litres min Resistance solenoid valve 16 Ohm Nilfisk 2 Advance Service Manual SC351 Squeegee System 55 Squeegee System Functional Description The squeegee system cleans the liquid off the floor which is then collected by the recovery system The squeegee is fastened to the brush deck by 2 hooks and the vacuum hose When the machine is running the conformation of the squeegee and the brush deck rotation mechanism assist in the alignment
37. the machine if the openings are clogged Always keep the openings free from dust hairs and any other foreign material which could reduce the air flow Do not remove or modify the plates affixed to the machine This machine cannot be used on roads or public streets Pay attention during machine transportation when temperature is below freezing point The water in the recovery tank or in the hoses could freeze and seriously damage the machine Use brushes and pads supplied with the machine or those specified in the User Manual Using other brushes or pads could reduce safety Incase of machine malfunctions ensure that these are not due to lack of maintenance If neces sary request assistance from the authorised personnel or from an authorised Service Center If parts must be replaced require ORIGINAL spare parts from an Authorised Dealer or Retailer To ensure machine proper and safe operation the scheduled maintenance shown in the relevant chapter of this Manual must be performed by the authorised personnel or by an authorised Ser vice Center Do not wash the machine with direct or pressurised water jets or with corrosive substances The machine must be disposed of properly because of the presence of toxic harmful materials battery etc which are subject to standards that require disposal in special centres see Scrap ping chapter Machine Lifting N Warning Do not work under the lifted machin
38. tion Component Locations Rear wheels on fixed axle Castors on brush deck Rear wheels on brush deck Castors on brush dec ioe Rear wheels on brush deck Rear wheels on fixed axle P100812 Service Manual SC351 Specifications Wheel System Non Traction Description Advance Nilfisk Nilfisk SC351 SC351 SC351 full PKG Diameter of wheels on fixed axle 8 4 in 214 mm Wheel pressure on the floor 72 5 psi 0 5 N mm Nilfisk 2 Advance 61
39. to the Service Center To reduce the risk of fire electric shock or injury do not leave the machine unattended when it is plugged in Before performing any maintenance procedure disconnect the battery charger cable from the electrical mains Do not smoke while charging the battery Always protect the machine against the sun rain and bad weather both under operation and inactivity condition Store the machine indoors in a dry place This machine must be used in dry conditions it must not be used or kept outdoors in wet conditions Before using the machine close all doors and or covers as shown in the User Manual This machine is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the machine by a person responsible for their safety Children should be supervised to ensure that they do not play with the machine Close attention is necessary when used near children Use only as shown in this Manual Use only Advance or Nilfisk s recommended accessories Check the machine carefully before each use always check that all the components have been as sembled 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 Pa
40. y attention to the machine moving parts When using the machine the deck can abruptly turn by 180 Do not use the machine on an incline Do not tilt the machine more than the angle indicated on the machine itself in order to prevent instability Do not use the machine in particularly dusty areas Use the machine only where a proper lighting is provided While using this machine take care not to cause damage to people or objects Do not bump into shelves or scaffoldings especially where there is a risk of falling objects Do not lean liquid containers on the machine use the relevant can holder The machine operating temperature must be between 32 F and 104 F 0 C and 40 C The machine storage temperature must be between 32 F and 104 F 0 C and 40 C The humidity must be between 30 and 95 7 Service Manual SC351 General Information When using floor cleaning detergents follow the instructions on the labels of the detergent bot tles To handle floor cleaning detergents wear suitable gloves and protections Do not use the machine as a means of transport Do not allow the brush to operate while the machine is stationary to avoid damaging the floor Incase 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
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