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Nilfisk-Advance SC500 Service Manual

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SC500
Service Manual
Advance SC500, 9087361020, 9087353020
Nilfisk SC500, 9087350020 - 9087351020
English
05/2015 (2) Form No. 9099984000

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Summary of Contents for Nilfisk-Advance SC500

  • Page 1 SC500 Service Manual Advance SC500, 9087361020, 9087353020 Nilfisk SC500, 9087350020 - 9087351020 English 05/2015 (2) Form No. 9099984000...

  • Page 2: Table Of Contents

    Service Manual – SC500 Table of Contents Table of Contents General Information Machine General Description Service Manual Purpose and Field of Application Other Reference Manuals Conventions Service and Spare Parts Serial Number Label Safety Visible Symbols on the Machine Symbols...
  • Page 3 Service Manual – SC500 Table of Contents Functional Description Wiring Diagram Component Locations Maintenance and Adjustments Setting the Installed Battery Type Battery installation Battery Charging Battery Charge State Display Checking/Replacing Fuses Troubleshooting Specifications General Wiring Diagram Recovery System Functional Description...
  • Page 4 Service Manual – SC500 Table of Contents Functional Description Wiring Diagram Component Locations Maintenance and Adjustments Cleaning the Detergent Solution Tank and Filter Cleaning the EcoFlex Detergent Tank Draining the EcoFlex System Troubleshooting Removal and Installation Solenoid Valve Disassembly/Assembly Detergent Pump Disassembly/Assembly...

  • Page 5: General Information

    General Information Machine General Description The SC500 is a “man-down” industrial machine designed to wash and dry floors in one pass. The machine is powered by on-board batteries, models can be equipped with EcoFlex system The machine features variable floor pressure disc brush or REV system, controlled detergent solution dosing and a rear squeegee with rubber blades that vacuums and dries the floor.

  • Page 6: Conventions

    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. Model: Scrubber-Dryer SC500 20 B Serial No: ....Prod. Nr: 9087352020 Date code: ..IPX4...

  • Page 7: Safety

    Service Manual – SC500 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.

  • Page 8: General Instructions

    Service Manual – SC500 General Information General Instructions Specific warnings and cautions to inform about potential damages to people and machine are shown below. Warning! Make sure to follow the safety precautions to avoid situations that may lead to serious injuries.
  • Page 9 Service Manual – SC500 General Information • 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 •...

  • Page 10: Machine Lifting

    Service Manual – SC500 General Information Machine Lifting Warning! Do not work under the lifted machine without supporting it with safety stands. Machine Transportation Warning! Before transporting the machine, make sure that: All covers are closed. The recovery tank and the detergent tank are empty.

  • Page 11: Machine Nomenclature (Know Your Machine)

    Service Manual – SC500 General Information Machine Nomenclature (know your machine) Can holder Drive handlebar Recovery tank Forward/reverse cover gear and activation paddle Battery charger Control panel Tank lifting handle Battery charger cable Solution drain Battery charger and level check...
  • Page 12 Service Manual – SC500 General Information Machine Nomenclature (Continues) Debris Recovery tank collection tank cover Detergent Vacuum system solution tank motor side filler cap Vacuum grid with automatic shut-off float Detergent solution tank Solution tank front filler Recovery tank Water...

  • Page 13: Control Panel (Disc Deck)

    Service Manual – SC500 General Information Control panel (Disc deck) Multifunction display and operating information One-Touch Scrub ON/OFF EcoFlex system push- push-button button Vacuum system adjustment/deactivation Brush release push-button push-button Detergent flow adjustment push-button Machine speed adjustment push-buttons Detergent percentage...

  • Page 14: Service And Diagnostic Equipment

    • 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...

  • Page 15: Technical Data

    Service Manual – SC500 General Information Technical Data Advance / Nilfisk Advance Description / Model SC500 20 B SC500 20R B Solution tank capacity 12 US gal (45 liters) Recovery tank capacity 12 US gal (45 liters) Machine length 50.3 in (1277 mm) 51.2 in (1302 mm)

  • Page 16: Dimensions

    Service Manual – SC500 General Information Dimensions Nilfisk SC500 Disc 28.3 in (720 mm) 50.3 in (1277 mm) Figure 7...

  • Page 17: Advance Sc500 Rev

    Service Manual – SC500 General Information Dimensions (Continues) Advance SC500 REV 28.3 in (720 mm) 51.2 in (1302 mm) Figure 8...

  • Page 18: Maintenance

    Service Manual – SC500 General Information Maintenance The lifespan of the machine and its maximum operating safety are ensured by correct and regular maintenance. Warning! Read carefully the instructions in the Safety chapter before performing any maintenance procedure. The following tables provides the scheduled maintenance. The intervals shown may vary according to particular working conditions, which are to be defined by the person in charge of the maintenance.

  • Page 19: Chassis System

    Service Manual – SC500 Chassis System Chassis System Chassis (main parts) The chassis function is primarily performed by the solution tank, the support housings for the wheels and working mechanisms are integrated in the gear motor unit and the rear frame.

  • Page 20: Control System

    Service Manual – SC500 Control System Control System Functional Description The architecture of the electronic control system for Mounted on the Display Board (EB2) is also the LCD the machine’s electrical components is composed of display and the 2 sensors which detect the presence...

  • Page 21: Component Locations

    Service Manual – SC500 Control System Component Locations • Function electronic board (EB1) • Display board (EB2) • Dashboard instrument board (EB3) Function electronic board (EB1) Figure 2 Display board (EB2) Dashboard instrument board (EB3) Figure 3...

  • Page 22: Maintenance And Adjustments

    Service Manual – SC500 Control System Maintenance and Adjustments Function Board (EB1) Alarm Codes The function electronic board indicates a series of alarms in case of malfunction of one or more systems, and in case of abnormal conditions detected in the input signals The alarms are shown on the display in the following format: ALARM <XX>...
  • Page 23 Service Manual – SC500 Control System Function Board (EB1) Alarm Codes (Continues) General alarms Alarm on Function Board - FLASHING YELLOW + RED LEDS Alarm code -------------------------- Meaning Condition Effect Service Suggestions Flashes Description Blown F2 fuse. Blown F2 fuse.
  • Page 24 Service Manual – SC500 Control System Function Board (EB1) Alarm Codes (Continues) Function electronic board alarms Alarm on Function Board - FLASHING RED LED Alarm code flashes -------------------------- Meaning Condition Effect Service Suggestions Description board BRUSH motor The motor current is Brush motor Check the current draw of the brush motor.
  • Page 25 Service Manual – SC500 Control System Function Board (EB1) Alarm Codes (Continues) Drive system alarms Alarm on Function Board - FLASHING YELLOW LED Alarm code flashes -------------------------- Meaning Condition Effect Service Suggestions Description board Amperometric Drive motor current Drive blocked.
  • Page 26 Service Manual – SC500 Control System Function Board (EB1) Alarm Codes (Continues) On-board Battery Charger Alarms Alarm code -------------------------- Meaning Condition Effect Service Suggestions Description Communication No signal from battery The battery charger Check the wiring between the battery charger...

  • Page 27: Black-Box: Recording Of Alarms, Parameters (See Pages 29-30), Partial Operating Time Counter

    Service Manual – SC500 Control System Black-box: Recording of Alarms, Parameters (see pages 29-30), Partial Operating Time Counter The alarms activated during normal machine operation are stored and can be read in the corresponding log (Alarm Log Screen) Display, Main Screen...

  • Page 28: Display, Alarms Log Screen

    Service Manual – SC500 Control System Display, Alarms Log Screen The alarms log screen (Figure 8) function allows you to check any alarms stored on the machine To return to the main screen (Figure 6), press the One-Touch button repeatedly...

  • Page 29: Display, Machine Settings Screen

    Service Manual – SC500 Control System Display, Machine Settings Screen The machine settings screen (Figure 9) functions allow you to customise some parameters described in the following table of modifiable parameters. Press the “hare” button to increase the value of the current parameter Press the “tortoise”...
  • Page 30 Service Manual – SC500 Control System Display, Machine Settings Screen (Continues) The following parameters are displayed only when, on reaching the last parameter RESET, the One-Touch button is pressed together with the EcoFlex and vacuum buttons If the One-Touch button is not pressed, the system will return to the first parameter CHM1.

  • Page 31: System For Flow Rate Regulation As Function Of Speed

    Service Manual – SC500 Control System System for Flow Rate Regulation as Function of Speed Solution flow levels 1, 2 and 3 regulate the flow of detergent solution on the basis of the machine speed so as to keep the quantity of solution dispensed per square metre of floor treated constant.

  • Page 32: Display, Operating Time Counter Screen

    Service Manual – SC500 Control System Display, Operating Time Counter Screen The operating time counter screen (Figure 10) function allows you to check the total accumulated hours of work for each machine subsystem: • (A) TOTAL counter (machine running time) •...

  • Page 33: Removal And Installation

    Service Manual – SC500 Control System Removal and Installation Function Board (EB1) Removal/Replacement Drive the machine on a level floor. Remove the operator key Disconnect the red battery connector Lift the recovery tank Remove the 7 screws and remove the electronic component compartment cover Disconnect the following connections sequentially (Figure 11): ◦...
  • Page 34 Service Manual – SC500 Control System Function Board (EB1) Removal/Replacement (Continues) Disconnect the following connections sequentially (Figure 13): ◦ (I) Deck actuator and detergent pump connection (J1) ◦ (J) Solenoid valve connection (J2) ◦ (K) Display board connection (J3) ◦...

  • Page 35: Display Board (Eb2) And Dashboard Instrument Board (Eb3) Removal/Replacement

    Service Manual – SC500 Control System Display Board (EB2) and Dashboard Instrument Board (EB3) Removal/Replacement Display board Drive the machine on a level floor. Disconnect the following connections sequentially (Figure 16): Remove the operator key ◦ (A) Speed potentiometer connection (J4) ◦...
  • Page 36 Service Manual – SC500 Control System Display Board (EB2) and Dashboard Instrument Board (EB3) Removal/Replacement (Continues) Dashboard Instrument Board Perform points 1 to 5 for removal of the display board Disconnect the following connections sequentially (Figure 17): ◦ (A) Flat connection (J3) ◦...

  • Page 37: Specifications

    Service Manual – SC500 Control System Specifications Function Board (EB1) Connectors (Figure 18) Power connections (Ø6mm male RADSOK terminals - AMPHENOL SK 200800532 101 or equivalent) Electronic board Ref. Description V ref. I max. Connected to in/out Electronic board power supply +...
  • Page 38 Service Manual – SC500 Control System Function Board (EB1) Connectors (Continues) (Figure 20) Drive connections (2-way male faston T-connectors, 6.3x0.8 – spacing 7.4mm) Electronic board Ref. Description V ref. I max. Connected to in/out Drive system motor + 0-24V Drive system motor -...
  • Page 39 Service Manual – SC500 Control System Function Board (EB1) Connectors (Continues) (Figure 22) J1: MOLEX MINIFIT type, 8-ways vertical Description Electronic board V ref. I max. Connected to in/out Detergent pump power supply + <1A Detergent pump power supply - <1A...
  • Page 40 Service Manual – SC500 Control System Function Board (EB1) Connectors (Continues) (Figure 24) J3: MOLEX MINIFIT type, 6-ways vertical Description Electronic board V ref. I max. Connected to in/out Dashboard power supply + <1A EB2.1 Dashboard serial + in/out <1A EB2.2...
  • Page 41 Service Manual – SC500 Control System Function Board (EB1) Connectors (Continues) (Figure 26) J5: JST VHR-3N vertical 3-way Description Electronic board V ref. I max. Connected to in/out Power supply for water level sensor + <1A S1.1 Water level sensor return <1A...
  • Page 42 Service Manual – SC500 Control System Function Board (EB1) Connectors (Continues) (Figure 28) J7: TYCO MODU II vertical 6-way Description Electronic board V ref. I max. Connected to in/out +24V power supply <1A TRK.RD +5V power supply <1A iButton input (CAN H channel)

  • Page 43: Display Board (Eb2) Connectors

    Service Manual – SC500 Control System Display board (EB2) Connectors (Figure 29) J1: MOLEX MINIFIT type, 6-ways vertical Electronic board Ref. Description V ref. I max. Connected to in/out Power supply + in/out <1A CFD12.J3.1 Dashboard serial + in/out <1A CFD12.J3.2...
  • Page 44 Service Manual – SC500 Control System Display board (EB2) Connectors (Continues) (Figure 31) J3: FCI DUFLEX (2.54 pitch) 8-way, male pins Electronic board Ref. Description V ref. I max. in/out Power supply - common <1A SP / EXTRAPR function LED (red)(LD3R) <1A...

  • Page 45: Shop Measurements

    Service Manual – SC500 Control System Shop Measurements The following tables contain some “real world” shop voltage measurements to help you recognize what “nor- mal” looks like All voltage values were measured with the black (Negative) voltmeter lead connected to the main battery negative unless otherwise specified.
  • Page 46 Service Manual – SC500 Control System Shop Measurements - Function Board (EB1) (continues) Brush Motor Figure 34 Color Description Measured Comments Brush motor + 24.4V (off), Constant Positive 24.2V (on) Blue Brush motor - 24.4V (off), PWM Battery 0.15v (on without RPM control activated) Negative 5.8v (on with RPM Control Active –...
  • Page 47 Service Manual – SC500 Control System Shop Measurements - Function Board (EB1) (continues) Vacuum Motor Figure 36 Color Description Measured Comments Vacuum system power supply + 24.8v (off) Constant Positive 24.4v (on) Blue Vacuum system power supply - 24.56 (off) 1.02 Running, 9.56...
  • Page 48 Service Manual – SC500 Control System Shop Measurements - Function Board (EB1) (continues) Figure 37 Color Circuit Description Measured Comments Detergent pump power supply + 24.9v (off) No change seen on voltmeter when the pump pulsed. Gray Detergent pump power supply - 24.9v (off)
  • Page 49 Service Manual – SC500 Control System Shop Measurements - Function Board (EB1) (continues) Figure 38 Color Circuit Description Measured Comments Yellow Solenoid valve power supply + 24.4 (Off and On) Purple Solenoid valve power supply - 24.4 (off) Momentarily drops to...
  • Page 50 Service Manual – SC500 Control System Shop Measurements - Function Board (EB1) (continues) Figure 39 Color Circuit Description Measured Comments Dashboard power supply + 24.9v On or Off White Dashboard serial + 4.62v key on 0v key off Blk/Wh Dashboard serial - 4.13v key on...
  • Page 51 Service Manual – SC500 Control System Shop Measurements - Function Board (EB1) (continues) Figure 40 Color Circuit Description Measured Comments White Enabling from battery charger 24.8v Not Charging May see residual voltage back-feeding from the main board here when charging.
  • Page 52 Service Manual – SC500 Control System Shop Measurements - Function Board (EB1) (continues) Figure 41 Color Circuit Description Measured Comments Brown Power supply for water level sensor + 24.7v Key on Black Water level sensor return 4.98 Tank < ½ full 0.03v...
  • Page 53 Service Manual – SC500 Control System Shop Measurements - Function Board (EB1) (continues) Figure 42 Two way vertical jumper • What is this for? The J6 Jumper is used to configure the function board for the EcoFlex option. • What does it mean if it is jumped? The function board is set for no EcoFlex •...
  • Page 54 Service Manual – SC500 Control System Shop Measurements - Function Board (EB1) (continues) Measured machine did not have a wiring connector Measurements were taken at each pin on the board Figure 43 Color Circuit Description Measured Comments +24V power supply 24.6...

  • Page 55: Shop Measurements - Display Board (Eb2)

    Service Manual – SC500 Control System Shop Measurements - Display Board (EB2) Measure and record the voltage at each of the function board pins Always use battery negative as your refer- ence point for your black voltmeter lead Figure 44...
  • Page 56 Service Manual – SC500 Control System Shop Measurements - Display Board (EB2) (continues) J2 9 way ribbon connector PIN 1 PIN 9 Figure 45 Color Circuit Description Measured Comments Power supply - common 0.003v ON/OFF button (P0) 24.2v Key off or key on DETERGENT MIX button (P4) 3.14v Not pressed...
  • Page 57 Service Manual – SC500 Control System Shop Measurements - Display Board (EB2) (continues) J3 8 way ribbon connector PIN 1 PIN 8 Figure 46 Color Circuit Description Measured Comments Power supply - common 0.003v SP / EXTRAPR function LED (red) 1.78v Red LED on...
  • Page 58 Service Manual – SC500 Control System Shop Measurements - Display Board (EB2) (continues) J4 Potentiometer Connector Figure 47 Color Circuit Description Measured Comments VR1 potentiometer power supply + 2.675 White VR1 potentiometer return 1.45 (Neutral) 2.48 (Full Fwd Pin 2), 0.44 (Full Rev Pin 2)

  • Page 59: Electrical System

    Service Manual – SC500 Electrical System Electrical System Functional Description The batteries (2 x 12V) are connected together in se- The green cable (terminal 4 of connector C3) is the ries by the cables data cable between board (EB1) and battery charger...

  • Page 60: Component Locations

    Service Manual – SC500 Electrical System Component Locations • Function electronic board (EB1) • Battery connections • Signal circuits fuse (F2) • Batteries (BAT) • Function board fuse (F1) • Battery connector (C1) • Battery charger (CH) Function electronic board (EB1)

  • Page 61: Maintenance And Adjustments

    Service Manual – SC500 Electrical System Maintenance and Adjustments Setting the Installed Battery Type Set the machine and the on-board battery charger (where fitted) on the basis of the type of battery to be in- stalled by modifying the BAT parameter as indicated...

  • Page 62: Battery Installation

    Service Manual – SC500 Electrical System Battery installation Remove the operator key Disconnect the red battery connector Lift the recovery tank cover and check that it is empty; if not, empty it using the drain hose Grasp the handle and carefully lift the recovery tank...
  • Page 63 Service Manual – SC500 Electrical System Battery Charging (Continues) Warning! When using lead (WET) batteries, battery charging produces highly explosive hydrogen gas. Charge the batteries in well-ventilated areas and away from naked flames. Do not smoke while charging the batteries. Keep the recovery tank raised until the battery charging cycle is over.

  • Page 64: Battery Charge State Display

    Service Manual – SC500 Electrical System Battery Charge State Display (Significant levels for machine operation) TRANSITION THRESHOLD (VOLT) INDICATION CONSEQUENCE 22.2V Little remaining run time, no block. 20.4V 21.6V Brush OFF 19.4V 20.6V Vacuum system OFF 18.4V 19.6V Drive system OFF Checking/Replacing Fuses Drive the machine on a level floor.

  • Page 65: Troubleshooting

    Service Manual – SC500 Electrical System Troubleshooting See the other chapters for previously provided instructions for other electrical system components Trouble Possible Causes Remedy The machine is not working Batteries (BAT) flat or connections faulty Charge the batteries or clean the...

  • Page 66: Specifications

    Service Manual – SC500 Electrical System Specifications Battery compartment size (length x width x height) 13.7x13.7x10.2 in (350x350x260 mm) Standard batteries (2) 12V 105 AhC5 Standard battery run time (capacity) 3.5 h Model 24V 13A Input voltage 85Vac÷264Vac, 50Hz÷60Hz Battery charger...

  • Page 67: General Wiring Diagram

    Service Manual – SC500 Electrical System General Wiring Diagram BATTERY CONNECTOR DASHBOARD FCI DUFLEX (2.54 pitch) 8-way, male pins INSTRUMENT Electronic board power supply + BRUSH MOTOR Brush motor + BOARD (EB3) FCI DUFLEX (2.54 pitch) 9-way, male pins (M1)

  • Page 68: Recovery System

    Service Manual – SC500 Recovery System Recovery System Functional Description The recovery system removes the dirty water from The vacuum system is activated automatically with the the floor and pipes it to a recovery tank. When the machine is running, the dirty water on the floor is col- One-Touch button .

  • Page 69: Component Locations

    Service Manual – SC500 Recovery System Component Locations • Recovery tank • Squeegee vacuum hose • Recovery tank cover • Vacuum motor (M2) • Cover gasket • Container with debris collection grid • Vacuum motor filter • Vacuum grid with automatic shut-off float •...

  • Page 70: Recovery Tank Cleaning

    Service Manual – SC500 Recovery System Maintenance and Adjustments Recovery Tank Cleaning Drive the machine to the appointed disposal Note: The gasket (E) creates the area vacuum in the tank that is necessary to vacuum up the Drain the water from the tank using the drain recovery water.

  • Page 71: Troubleshooting

    Service Manual – SC500 Recovery System Troubleshooting Trouble Possible Causes Remedy The vacuum motor will not turn on Wiring between Function Board (EB1) and vacuum motor Repair (M2) damaged Dashboard instrument board (EB3) faulty Replace Vacuum motor faulty Check the amperage...

  • Page 72: Removal And Installation

    Service Manual – SC500 Recovery System Removal and Installation Vacuum Motor Current Draw Test Warning! This procedure must be performed by qualified personnel only. Apply the amperometric clamp (A) to a cable (B) of the batteries (Figure 5) Insert the operator key in its slot on the control panel...

  • Page 73: Vacuum Motor Unit Disassembly/Assembly

    Service Manual – SC500 Recovery System Vacuum Motor Unit Disassembly/Assembly Disassembly Remove the operator key Disconnect the red battery connector If present, drain the recovery tank, then lift it Remove the cover (A) (Figure 6), then disconnect the connector (B)

  • Page 74: Container And Vacuum Motor Disassembly/Assembly

    Service Manual – SC500 Recovery System Container and Vacuum Motor Disassembly/Assembly Disassembly Remove the operator key Disconnect the red battery connector If present, drain the recovery tank, then lift it Unscrew the 4 screws (A) (Figure 8) and remove the case (B)
  • Page 75 Service Manual – SC500 Recovery System Container and Vacuum Motor Disassembly/Assembly (Continues) Unscrew the 4 screws (F) and cut the retaining strap (G) (Figure 9) Remove the external soundproofing support (H) from the internal soundproofing support (I). Clean any dirt from the space between the two containers...
  • Page 76 Service Manual – SC500 Recovery System Container and Vacuum Motor Disassembly/Assembly (Continues) 14 Clean and check the condition of all seals (O) (Figure 11); replace them if necessary Figure 11 Assembly 15 Check that all components are reassembled with the correct polarity and orientation...

  • Page 77: Specifications

    Service Manual – SC500 Recovery System Specifications Advance / Nilfisk Advance Description / Model SC500 20 B SC500 20R B Recovery tank capacity 12 US gal (45 L) 0.37 hp (280 W) Vacuum motor technical data 20.8A VDC 24V Vacuum circuit capacity 29.9 in H...

  • Page 78: Scrub System, Disc

    Service Manual – SC500 Scrub System, Disc Scrub System, Disc Functional Description The disc brush system can be started by the operator The overload is detected by monitoring the current The disc brush turn counter-clockwise flow on the brush motor. If the motor current reaches The rotating brush system cleans the surface of the the value stored in the parameter “VS1”...

  • Page 79: Brush Deck Actuator System

    Scrub System, Disc Brush Deck Actuator System The brush deck actuator of SC500 is a new generation actuator developed by SIR and ITALSEA and it is con- trolled directly by the main board without electromechanical limit switches ITALSEA patented the system to control the actuator.

  • Page 80: Component Locations

    Service Manual – SC500 Scrub System, Disc Component Locations • Brush motor (M1) • Brush deck support • Machine straight forward movement adjusting • Brush knob • Brush deck lifting/lowering actuator (M5) • Disc brush deck • Drive hub • Deck raising levers...
  • Page 81 Service Manual – SC500 Scrub System, Disc Component Locations (Continues) • Function electronic board (EB1) • Actuator system wiring connection Actuator system wiring connection Function electronic board (EB1) Figure 4...

  • Page 82: Brush Installation/Removal

    Service Manual – SC500 Scrub System, Disc Maintenance and Adjustments Brush Installation/Removal According to the kind of cleaning to be Caution! Turn the machine speed to idle performed, the machine can be equipped either and slightly press the paddle, with the brush (A) (Figure 5) or the pad-holder...

  • Page 83: Troubleshooting

    Service Manual – SC500 Scrub System, Disc Troubleshooting Trouble Possible Causes Remedy The brush does not clean properly The brush is excessively worn Replace One brush does not turn See the chapter Control System, Function Board (EB1) Error Codes Brush motor carbon brushes worn...

  • Page 84: Removal And Installation

    Service Manual – SC500 Scrub System, Disc Removal and Installation Brush Motor Current Draw Test Warning! This procedure must be performed by qualified personnel only. Drive the machine on a level floor. Remove the brush Disconnect the drive system connector (A) (Figure 6) on the function board (B) to disable machine...

  • Page 85: Brush Deck Disassembly/Assembly

    Service Manual – SC500 Scrub System, Disc Brush Deck Disassembly/Assembly Disassembly Drive the machine on a level floor or on a hoisting system to facilitate the disassembly procedures. Remove the brush Insert the operator key in its slot on the control panel to switch the machine on...
  • Page 86 Service Manual – SC500 Scrub System, Disc Brush Deck Disassembly/Assembly (Continues) 10 Remove the 4 screws (I) (Figure 9) fastening the deck raising levers (J), retaining the bushings and washers 11 Unscrew the 2 retaining nuts (K) and disconnect the brush motor power supply cables (L)

  • Page 87: Checking/Replacing Brush Motor Carbon Brushes

    Service Manual – SC500 Scrub System, Disc Checking/Replacing Brush Motor Carbon Brushes Check Remove the brush deck Remove any dust and dirt from around the brush motor carbon brushes Remove the four protective covers (A) (Figure 11) by disconnecting the clips...

  • Page 88: Brush Motor Disassembly/Assembly

    Service Manual – SC500 Scrub System, Disc Brush Motor Disassembly/Assembly Disassembly Remove the brush deck Working at the bench, remove the screw (A) (Figure 12) of the brush motor Use a puller to remove the brush hub (B) Remove the screws (C)

  • Page 89: Brush Deck Actuator Disassembly/Assembly

    Service Manual – SC500 Scrub System, Disc Brush Deck Actuator Disassembly/Assembly Disassembly Lower the brush deck Switch off the machine and disconnect the battery connector Remove the cover and disconnect the actuator connector (A) (Figure 13) Unscrew the screw (B) of the lower pin, retaining the bushings...

  • Page 90: Specifications

    Service Manual – SC500 Scrub System, Disc Specifications Advance / Nilfisk Description / Model SC500 20 B Cleaning width 20 in (530 mm) Brush/pad diameter 20 in (530/508 mm) Brush pressure with extra-pressure function turned off 33 lb (15 kg)

  • Page 91: Scrub System, Rev

    Service Manual – SC500 Scrub System, REV Scrub System, REV Functional Description The REV brush system can be operated by the opera- In case of REV motor overload, a safety system stops the brush to prevent continuous overload The REV brush has a movement with distinctive or-...

  • Page 92: Brush Deck Actuator System

    Scrub System, REV Brush Deck Actuator System The brush deck actuator of SC500 is a new generation actuator developed by SIR and ITALSEA and it is con- trolled directly by the main board without electromechanical limit switches ITALSEA patented the system to control the actuator.

  • Page 93: Component Locations

    Service Manual – SC500 Scrub System, REV Component Locations • REV Motor (M1) • REV pad • REV brush deck • Brush deck lifting/lowering actuator (M5) • Deck raising levers • Drive disc • Brush deck support REV Motor (M1)
  • Page 94 Service Manual – SC500 Scrub System, REV Component Locations (Continues) • Function electronic board (EB1) • Actuator system wiring connection Actuator system wiring connection Function electronic board (EB1) Figure 4...

  • Page 95: Maintenance And Adjustments

    Service Manual – SC500 Scrub System, REV Maintenance and Adjustments Brush or Pad Installation/Removal Caution! Ensure that the machine is off with the operator key removed before installing or removing the REV system brush. With the REV deck raised, install the pad (A) (Figure 5) or the brush (C), depending on the type of treatment to be performed: ◦...

  • Page 96: Troubleshooting

    Service Manual – SC500 Scrub System, REV Troubleshooting Trouble Possible Causes Remedy The brush does not clean properly The brush is excessively worn Replace One brush does not turn See the chapter Control System, Function Board (EB1) Error Codes REV motor carbon brushes worn...

  • Page 97: Removal And Installation

    Service Manual – SC500 Scrub System, REV Removal and Installation REV Motor Current Draw Test Warning! This procedure must be performed by qualified personnel only. Drive the machine on a level floor. Remove the brush Lift the machine so that the deck no longer touches the floor once lowered.

  • Page 98: Rev Deck Disassembly/Assembly

    Service Manual – SC500 Scrub System, REV REV Deck Disassembly/Assembly Disassembly Drive the machine on a level floor or on a hoisting system to facilitate the disassembly procedures. Insert the operator key in its slot on the control panel to switch the machine on...
  • Page 99 Service Manual – SC500 Scrub System, REV REV Deck Disassembly/Assembly (Continues) Remove the 2 screws (I) (Figure 9) fastening the deck raising levers (J), retaining the bushings and washers 10 Disconnect the REV motor power supply connections (K) Figure 9...

  • Page 100: Checking/Replacing Rev Motor Carbon Brushes

    Service Manual – SC500 Scrub System, REV Checking/Replacing REV Motor Carbon Brushes Remove the REV deck Place the deck on a workbench The motor cannot be removed with the REV deck fitted to the machine. Note: Remove the connector holder Remove the wire mounting nut and the rubber gasket...
  • Page 101 Service Manual – SC500 Scrub System, REV Checking/Replacing REV Motor Carbon Brushes (Continues) Remove the top cover Figure 13 Replace the carbon brushes ◦ Before disassembly, note the spring position when the carbon brush is being pushed back ◦ Remove the carbon brush and the spring ◦...
  • Page 102 Service Manual – SC500 Scrub System, REV Checking/Replacing REV Motor Carbon Brushes (Continues) Figure 15 ◦ Install the other three carbon brushes Install the wave washer Install the top cover ◦ Install it far enough so that the carbon brushes make contact with the collector when the temporary...

  • Page 103: Rev Deck Actuator Disassembly/Assembly

    Service Manual – SC500 Scrub System, REV REV Deck Actuator Disassembly/Assembly Disassembly Assembly Lower the brush deck Assemble the components in the reverse order of disassembly Switch off the machine and disconnect the battery connector Remove the cover and disconnect the actuator...

  • Page 104: Specifications

    Service Manual – SC500 Scrub System, REV Specifications Advance Description / Model SC500 20 RB Cleaning width 20 in (530 mm) Brush/pad diameter 20 in (530/508 mm) Brush pressure with extra-pressure function turned off 49 lb (22 kg) Brush pressure with extra-pressure function turned on...

  • Page 105: Solution System

    Service Manual – SC500 Solution System Solution System Functional Description The solution system supplies water and detergent to Solution flow levels 1, 2 and 3 regulate the flow of the brush when cleaning the floor. The solution tank detergent solution on the basis of the machine speed...

  • Page 106: Component Locations

    Service Manual – SC500 Solution System Component Locations • Solution tank • Solution filter • Detergent solution tank side filler cap • Solenoid valve (EV1) • Detergent solution tank front filler • Battery compartment liquid drain hole • Water removable filler hose •...
  • Page 107 Service Manual – SC500 Solution System Component Locations (Continues) • Solution tap • EcoFlex detergent tank • Solution filter • EcoFlex detergent pump (M4) • Solenoid valve (EV1) • Water level sensor (SW1) • Battery compartment liquid drain hole • Cap with detergent supply hose...

  • Page 108: Maintenance And Adjustments

    Service Manual – SC500 Solution System Maintenance and Adjustments Cleaning the Detergent Solution Tank and Filter Drive the machine on a level floor. Ensure that the machine is off and the operator key has been removed Drain the detergent solution tank with the level hose Then, rinse the tank with clean water...

  • Page 109: Cleaning The Ecoflex Detergent Tank

    Service Manual – SC500 Solution System Cleaning the EcoFlex Detergent Tank Clean the detergent tank as follows Drive the machine to the appointed disposal area Ensure that the machine is off and the operator key has been removed Lift the recovery tank cover by opening it with the handle and check that the tank is empty; if not,...

  • Page 110: Draining The Ecoflex System

    Service Manual – SC500 Solution System Draining the EcoFlex System Clean the detergent tank following the procedure in the previous section To remove residual detergent from the detergent hoses and pump, proceed as follows 11 To turn on the machine, insert the operator key in its slot on the control panel; if the key is already...

  • Page 111: Troubleshooting

    Service Manual – SC500 Solution System Troubleshooting Trouble Possible Causes Remedy Small amount of solution or no solution The solution filter is clogged/dirty Clean the filter reaches the brush Solution supply valve locked in (semi) closed position Replace the valve...
  • Page 112 Service Manual – SC500 Solution System Troubleshooting (Continues) Trouble Possible Causes Remedy The EcoFlex system detergent is not The detergent flow percentage is too low Check/change the percentage as reaching the brush, or is not arriving in shown in the User Manual...

  • Page 113: Removal And Installation

    Service Manual – SC500 Solution System Removal and Installation Solenoid Valve Disassembly/Assembly Disassembly Drive the machine on a level floor or on a hoisting system to facilitate the disassembly procedures. Insert the operator key in its slot on the control panel to switch the machine on...

  • Page 114: Detergent Pump Disassembly/Assembly

    Service Manual – SC500 Solution System Detergent Pump Disassembly/Assembly Drive the machine on a level floor. Switch off the machine and disconnect the battery connector Lift the recovery tank Unscrew the two screws (A) (Figure 9) and remove the cover (B)

  • Page 115: Water Level Sensor Operation

    Service Manual – SC500 Solution System Water Level Sensor Operation The water level sensor (SW1) is positioned about half the height of the solution tank so as to provide the in- formation to the electronic system on the level of water present in the tank (more than half, less than half)

  • Page 116: Water Level Sensor Disassembly/Assembly

    Service Manual – SC500 Solution System Water Level Sensor Disassembly/Assembly Drive the machine on a level floor. Switch off the machine and disconnect the battery connector Lift the recovery tank Unscrew the two screws (A) (Figure 13) and remove the cover (B)

  • Page 117: Specifications

    Service Manual – SC500 Solution System Specifications Advance / Nilfisk Advance Description / Model SC500 20 B SC500 20R B Solution tank capacity 12 US gal (45 liters) 0.75 cl/m / 1.5 cl/m 0.38 cl/m / 0.75 cl/m Solution flow values 3.0 cl/m / 2.8 l/min...

  • Page 118: Squeegee System

    Service Manual – SC500 Squeegee System Squeegee System Functional Description The squeegee system cleans the liquid off the floor, which is then collected by the recovery system. The squeegee is mounted on castors and the weight of the system presses it down on the floor.

  • Page 119: Component Locations

    Service Manual – SC500 Squeegee System Component Locations • Upper squeegee support • Impact deflection wheel • Squeegee blades • Gas spring • Squeegee lifting/lowering pedal • Squeegee adjusting knob • Lower squeegee support • Mounting handwheels • Squeegee blades...

  • Page 120: Maintenance And Adjustments

    Service Manual – SC500 Squeegee System Maintenance and Adjustments Squeegee cleaning Loosen the handwheels and remove the Note: The squeegee must be clean squeegee and its blades must be in good conditions in order to get a good Wash and clean the squeegee In particular, drying.

  • Page 121: Checking/Replacing The Squeegee Blades

    Service Manual – SC500 Squeegee System Checking/Replacing the Squeegee Blades Note: The squeegee must be clean and its blades must be in good conditions in order to get a good drying. Warning! It is advisable to wear protective gloves when cleaning the squeegee because there may be sharp debris.

  • Page 122: Troubleshooting

    Service Manual – SC500 Squeegee System Troubleshooting Trouble Possible Causes Remedy Suction of dirty water is insufficient or Squeegee or vacuum hose blocked or damaged Clean or repair/replace non-existent The squeegee leaves lining on the floor There is debris under the blade...

  • Page 123: Removal And Installation

    Service Manual – SC500 Squeegee System Removal and Installation Disassembly/Assembly of the Gas Spring on the Squeegee Support Drive the machine on a level floor or on a hoisting system to facilitate the disassembly procedures. Lower the squeegee and remove it from the support...

  • Page 124: Specifications

    Service Manual – SC500 Squeegee System Specifications Advance / Nilfisk Advance Description / Model SC500 20 B SC500 20R B Squeegee width 28.3 in (720 mm) Gas spring 300 N...

  • Page 125: Wheel System, Traction

    Service Manual – SC500 Wheel System, Traction Wheel System, Traction Functional Description Machine movement is provided by the gear motor unit (M3) The gear motor unit (M3) also functions as the main support of the machine, and is composed of an electric...

  • Page 126: Component Locations

    Service Manual – SC500 Wheel System, Traction Component Locations • Forward/reverse gear and activation paddle • Rear pivoting wheel • Speed Potentiometer (RV1) • Gear motor unit (M3) • Maximum speed regulation buttons • Driving wheels Forward/reverse gear and activation paddle...

  • Page 127: Troubleshooting

    Service Manual – SC500 Wheel System, Traction Troubleshooting Trouble Possible Causes Remedy The machine does not move Battery voltage too low Charge the battery Speed potentiometer (RV1) incorrectly regulated or Replace broken Function Board (EB1) faulty Replace Wiring damaged Check all connections inside the...

  • Page 128: Maintenance And Adjustments

    Service Manual – SC500 Wheel System, Traction Maintenance and Adjustments Speed Potentiometer Removal/Replacement Drive the machine on a level floor. Remove the operator key Disconnect the red battery connector Unscrew the 2 screws (A) (Figure 4) Release the retaining tab (B), then lift up and remove the dashboard cover (C) Disconnect the following connections: ◦...

  • Page 129: Drive System Gear Motor Current Draw Test

    Service Manual – SC500 Wheel System, Traction Drive System Gear Motor Current Draw Test Warning! This procedure must be performed by qualified personnel only and with the help of an assistant. Drive the machine on a level floor. Use a suitable chock to raise one side of the machine approximately 2cm from the floor and allow one...

  • Page 130: Specifications

    Service Manual – SC500 Wheel System, Traction Specifications Advance / Nilfisk Advance Description / Model SC500 20 B SC500 20R B Driving wheel diameter 7.8 in (200 mm) Driving wheel specific pressure on the floor (*) 101 psi (0.7 N/mm Rear wheel diameter 3.1 in (80 mm)

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