Advance acoustic SC1500 Service Manual
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Advance acoustic SC1500 Service Manual

56104000 (x20d), 56104001 (x20r), 56104002 (sc1500-51d)
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SC1500
Service Manual
Advance SC1500 Models: 56104000 (X20D), 56104001 (X20R)
Nilfisk SC1500 Models: 56104002 (SC1500-51D)
English
5/13 Form No. 56043166

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Summary of Contents for Advance acoustic SC1500

  • Page 1 SC1500 Service Manual Advance SC1500 Models: 56104000 (X20D), 56104001 (X20R) Nilfisk SC1500 Models: 56104002 (SC1500-51D) English 5/13 Form No. 56043166...

  • Page 2: Table Of Contents

    Service Manual – SC1500 Contents General Information Machine Configurations Service Manual Purpose and Application Other Reference Manuals and Information Sources Diagnostic and Service Tools Conventions Parts and Service Modifications Nameplate Cautions and Warning Symbols General Safety Instructions Prop Rod Moving the Machine...
  • Page 3 Service Manual – SC1500 Contents Programming Options To Access the Main Menu To Access a Submenu from the Main Menu To Change a Programmable Option in a Submenu Deck Type Low Battery Voltage Cutout Battery Charger Burst Of Power Operation...
  • Page 4 Service Manual – SC1500 Contents Recovery System Functional Description Circuit Descriptions Vacuum Motor Off Vacuum Motor On Component Locations Troubleshooting Removal and Installation Vacuum Motor Specifications Special Tools Scrub System Functional Description Scrub Deck and Motor 20D Scrub Deck 20R REV Deck ™...
  • Page 5 Service Manual – SC1500 Contents Squeegee System Functional Description Component Locations Troubleshooting Specifications Steering System Functional Description Component Locations Troubleshooting Wheel System - Traction Functional Description Wheel Drive Motor Circuit Descriptions Power to the E1 Curtis 1210 Speed Controller Speed Control Drive Functions...

  • Page 6: General Information

    Service Manual Purpose and Application This Service Manual is a technical resource designed to aid service personnel in maintaining and repairing the Advance SC1500 Scrubbers to ensure optimum performance and long service life. Please read it thoroughly before servicing your machine.

  • Page 7: Conventions

    Advance original replacement parts and accessories. Call the Advance Dealer named below for repair parts or service. Please specify the Model Number (same as the Part Number) and Serial Number when discussing your machine.

  • Page 8: Cautions And Warning Symbols

    General Information Cautions and Warning Symbols Nilfisk-Advance uses the symbols below to signal potentially dangerous conditions. Read this information carefully and take the necessary steps to protect personnel and property. Danger! Is used to warn of immediate hazards that will cause severe personal injury or death.
  • Page 9 • This machine is not suitable for picking up hazardous dust. • Do not use scarifier discs and grinding stones. Advance will not be held responsible for any damage to floor surfaces caused by scarifiers or grinding stones (can also cause damage to the brush drive system).

  • Page 10: Prop Rod

    Service Manual – SC1500 General Information Prop Rod To prevent the Control Panel Housing / Recovery from dropping unexpectedly and Tank Cover causing injury, always engage the Prop Rod shown before working under the Control Panel Panel Housing Housing/ / Recovery Tank Cover...

  • Page 11: Transporting The Machine

    Service Manual – SC1500 General Information Transporting the Machine Caution! Before transporting the machine on an open truck or trailer, make sure: • All tanks are empty. • The recovery tank cover is latched securely. • The machine is tied down securely. (Refer to the Tie-down Locations below.

  • Page 12: Overall Dimensions

    Service Manual – SC1500 General Information Overall Dimensions 1.13 1.13” [28,7] [28,7 mm] 52.5” 52.5 [1332] [133,4 cm] 48.5” [123,2 cm] 48.5 24.5” [62,2 cm] [1232] 24.5 [623] 27.9” [70,9 cm] 27.9 [710] Fastener Torque Specifications Size Plated Steel Stainless Steel 42 in.-lb.

  • Page 13: Maintenance

    ** Replace vibration damping isolators (REV model only) * Have an Authorized Advance Service Center check the vacuum motor carbon motor brushes once a year or after 300 operating hours. The brush and drive motor carbon brushes should be checked every 500 hours or once a year.

  • Page 14: Lubrication Locations

    Service Manual – SC1500 General Information Lubrication Locations • Once a month apply Lubriplate® 730-2 or equivalent grease to, or grease the fitting on, the following components. Avoid using too much grease. – Hex Shaft/Steering Tube Assembly – Drive Wheel Chain –...

  • Page 15: Major Machine Components

    Service Manual – SC1500 General Information Major Machine Components Control System Electrical System Recovery System Solution System Chassis System Squeegee Assembly Scrub Scrub System - REV System - 20D...

  • Page 16: Machine Controls

    Service Manual – SC1500 General Information Machine Controls Key Switch, Emergency Stop and Horn Switch • – controls the battery power to the machine. Key Switch Note that you must turn the to the on ( Key Switch position before stepping onto the machine platform.

  • Page 17: Circuit Breakers

    Service Manual – SC1500 General Information Circuit Breakers are mounted on the top of the control panel. To reset a , press the Circuit Breakers Circuit Breaker corresponding reset button • – labeled in the 50-amp Circuit Breaker Ladder Diagram; controls the positive voltage to the E1 Curtis 1210 Speed Controller.

  • Page 18: Speed And Direction Controls And Indicators

    Service Manual – SC1500 General Information Speed and Direction Controls and Indicators • The – labeled in the Ladder Diagram; Speed Adjustment Knob 100K potentiometer that controls the machine speed in both forward and reverse. Speed Adjustment Knob R1 • The...

  • Page 19: Scrub Controls And Indicators

    Service Manual – SC1500 General Information Scrub Controls and Indicators Note: The scrub pressure, recovery vacuum power, solution flow rate and detergent strength settings that will be in effect when the One-touch Scrub On/Off Switch is pressed is ™ determined by the Save Scrub Settings submenu in the Programming Options. is selected, the machine will use the scrub settings that • If...

  • Page 20: Solution Controls And Indicators

    Service Manual – SC1500 General Information Solution Controls and Indicators • – functions as follows: Solution Flow Adjustment Switch Solution – When the scrub system is enabled, pressing the Solution Flow Rate will cycle the solution flow rates Bar Graph...

  • Page 21: Burst Of Power Switch And Indicator

    Service Manual – SC1500 General Information • – displays the Detergent Purge Screen Chemical Purge Icon indicate that the detergent purge cycle is active. To start the purge cycle and display the , press Detergent Purge Screen and hold the...

  • Page 22: Vacuum Power Adjustment Switch And Indicators

    Service Manual – SC1500 General Information Vacuum Power Adjustment Switch and Indicators • – functions as Vacuum Power Adjustment Switch follows: Quiet Vacuum Vacuum Level Bar – Pressing the Mode Graph Vacuum Power Adjustment while in the scrub mode will cycle...

  • Page 23: Information Switch

    Service Manual – SC1500 General Information Information Switch • – displays the Information Screen on the Information Switch graphic display. The Information Screen will also be displayed Fault Codes if a significant error occurs that results in the shutdown of...
  • Page 24 Service Manual – SC1500 General Information • – displayed when AC power is applied Battery Charger Screen to the onboard charger. Note that this will disable all Battery machine functions. The displays the Type Battery Charger Screen . The Battery Type...

  • Page 25: Chassis System

    Service Manual – SC1500 Chassis System Major Chassis Components The Chassis System provides the framework on which the machine components are mounted. Battery Tray contains the batteries Platform and connectors and is Assembly mounted to the top of Chassis Weldment...

  • Page 26: Platform Switches

    Chassis System Service Manual – SC1500 Platform Switches are mounted on the top of the Operator Presence Pedal Go Pedal Platform • When the Operator stands on the he/she presses the which actuates the Platform, Operator Presence Pedal (called the “Deadman Switch S2” in the Diagram).

  • Page 27: Control System

    Service Manual – SC1500 Control System Functional Description The Control System consists of the A1 Control Board (Main Machine Controller) and the E1 Curtis 1210 Speed Controller. The A1 Control Board controls the scrubbing and wastewater recovery functions based on Operator requests, and motion and direction inputs from the E1 Curtis 1210 Speed Controller.

  • Page 28: Component Locations

    Control System Service Manual – SC1500 Component Locations The following components are included in this section: Interface E1 Curtis • A1 Control Board Panel A1 Control 1210 Speed Assembly Board Controller • E1 Curtis 1210 Speed Controller is mounted to the...

  • Page 29: Fault Code Table

    Control System Service Manual – SC1500 Fault Code Table Display Fault Description Conditions Needed to Set the Fault Code Code The E1 Curtis Speed Controller is communicating a problem Speed Control fault to the A1 Control Board. Scrub Deck Actuator overload The Scrub Deck Actuator has drawn more than 4.5 amps.

  • Page 30: System Disabled By Fault Codes

    Control System Service Manual – SC1500 System Disabled by Fault Codes Disable System Flash Indicator Fault Description Speed Control fault Scrub Deck Actuator overload Solution Solenoid overload Vacuum Contactor (SSR1) coil overload Brush Contactor (K2) coil overload Detergent Pump overload...

  • Page 31: Service Test Mode

    Control System Service Manual – SC1500 Service Test Mode The Service Test Mode allows you to switch the individual electrical system components on and off independent of the normal Operator inputs. This serves as a “shortcut” when troubleshooting the machine systems.

  • Page 32: Service Test Mode Functions

    Control System Service Manual – SC1500 Service Test Mode Functions The control panel switches are used to control various A1 Control Board output functions. The table below lists the control panel switches, and their corresponding Service Test Mode functions and displays:...

  • Page 33: To Exit The Service Test Mode

    To exit the Service Test mode, press the Scrub On/Off Switch six times or turn the key switch off. Programming Options The SC1500 graphic display has two “layers” of hidden menus that allow you to view and change the various programmable machine configurations, system settings and parameters. The top “layer” is the main menu from which you can navigate to the 20 submenus.

  • Page 34: To Access The Main Menu

    Control System Service Manual – SC1500 To Access the Main Menu Turn the key switch to the Off position. (If the optional on-board battery charger is installed, it must be unplugged from the AC power). Press and hold in the Solution Flow Adjustment Switch and Extra Pressure Switch simultaneously.

  • Page 35: To Access A Submenu From The Main Menu

    Switch. This will enter the displayed programming option and return to the main menu link. Deck Type The SC1500 can be equipped with two different deck options. The 1. DECK PROGRAM OPTIONS submenus allow you to specify the type of deck installed in your TYPE 1.

  • Page 36: Low Battery Voltage Cutout

    Control System Service Manual – SC1500 Low Battery Voltage Cutout The purpose of the low battery voltage cutout is to help prolong battery PROGRAM OPTIONS life. The A1 Control Board will raise the deck, and switch off the brush 2. LOW VOLT CUTOUT and vacuum motors, solution solenoid valve and detergent pump automatically when the batteries discharge to the selected cutout level.

  • Page 37: Burst Of Power Operation

    Control System Service Manual – SC1500 Burst Of Power Operation submenus allow you to enable or disable the 4. BURST OF POWER PROGRAM OPTIONS burst-of-power function. When the burst-of-power function is enabled 4. BURST OF POWER ), pressing the Burst Of Power Switch while scrubbing will attempt to make a temporary increase in the solution flow rate, brush pressure, vacuum level and detergent flow rate.

  • Page 38: Open Fault Detect

    Control System Service Manual – SC1500 Open Fault Detect Normally, the A1 Control Board will perform checks of the electrical PROGRAM OPTIONS system during operation. If a fault occurs in a particular system, 7. OPEN FAULT DETECT that system (and possibly others) will be shut down. This can make troubleshooting the system difficult.

  • Page 39: Lock Out Solution Flow Rate

    Control System Service Manual – SC1500 Lock Out Solution Flow Rate submenus allow you to lock out single or 10. LOCKOUT SOLUTION PROGRAM OPTIONS multiple solution flow rate settings. The Operator will not be able to 10. LOCKOUT SOLUTION select flow rate(s) that are locked out during normal operation.

  • Page 40: Forward Alarm Volume

    Control System Service Manual – SC1500 Forward Alarm Volume (forward) (volume) submenus allow you to set 12. FWD ALARM VOL PROGRAM OPTIONS the forward alarm volume. 12. FWD ALARM VOL The default setting is PROGRAM OPTIONS FWD ALARM VOL PROGRAM OPTIONS...

  • Page 41: Restore Defaults

    Control System Service Manual – SC1500 Restore Defaults submenus allow you to reset the programmed 14. RESTORE DEFAULTS PROGRAM OPTIONS options/parameters stored in the A1 Control Board EEPROM to their 14. RESTORE DEFAULTS factory default values. Note that selecting will RESTORE DEFAULTS / YES not reset the hour meter.

  • Page 42: Extra Information On The Graphic Display

    Control System Service Manual – SC1500 Extra Information on the Graphic Display submenus allow you to display additional 17. EXTRA INFO ON LCD PROGRAM OPTIONS information on the graphic display. This additional information is 17. EXTRA INFO ON LCD displayed in real time on both the Scrubbing and Information screens and can aid in troubleshooting the machine in normal operation.

  • Page 43: Frozen Parameters

    Control System Service Manual – SC1500 Frozen Parameters first and second-level submenus allow you 18. FROZEN PARAMETER PROGRAM OPTIONS to view the machine parameters that were saved prior to when an error 18. FROZEN PARAMETER code was detected. This can be helpful when troubleshooting intermittent problems that are causing a code to set.
  • Page 44 Control System Service Manual – SC1500 To display the parameter data points in a second-level submenu: Press the Forward (up) or Reverse (down) Drive Switch to scroll PROGRAM OPTIONS through the available first-level submenus. (The first-level submenu FROZEN PARAMETER is selected in this example.) 3.

  • Page 45: Panel Test

    Control System Service Manual – SC1500 This fast-scrolling feature will automatically end when you press the Scrub On/Off Switch to leave a second- level submenu. The Detergent On/Off Indicator will turn off when you press the Scrub On/Off Switch again to leave the first- level submenu.
  • Page 46 Control System Service Manual – SC1500 LED Indicator That Will Light When the Membrane Switch Switch is Pressed Scrub On/Off Scrub On/Off Indicator Switch Extra Pressure Extra Pressure Indicator Switch Solution Flow Solution On/Off Indicator Adjustment Switch Detergent Detergent On/Off...

  • Page 47: Save Scrub Settings

    Control System Service Manual – SC1500 Save Scrub Settings submenus allow you determine whether 20. SAVE SCRUB SETTINGS PROGRAM OPTIONS the machine uses the scrub settings that were in use when the key switch 20. SAVE SCRUB SETTINGS was switched off, or the default settings.
  • Page 48 Control System Service Manual – SC1500 Carefully lift the Interface Panel out of the Assembly Control Panel Control Interface Panel Panel Assembly Carefully disconnect the Electrical from the Connectors A1 Control Board Remove the Phillips Screws grounding strap, then remove the...

  • Page 49: E1 Curtis 1210 Speed Controller

    Control System Service Manual – SC1500 E1 Curtis 1210 Speed Controller Disconnect the batteries. Phillips Screw Interface Control and Flat Panel Remove the four Panel Washer (4) Assembly Phillips Screws holding Flat Washers Interface Panel to the Assembly Control Panel...
  • Page 50 Control System Service Manual – SC1500 Carefully disconnect Electrical from the Connectors Electrical E1 Curtis 1210 Speed Connector Controller (typical) Remove the two Socket Head Screws remove the E1 Curtis 1210 Speed Controller from the Control Panel Reinstall the E1 Curtis...

  • Page 51: A1 Control Board Shop Measurements

    Service Manual – SC1500 A1 Control Board Shop Measurements The following table lists measurements taken from one SC1500. While these are not “specifications”, they can help you recognize abnormal vs. normal conditions. Note that the black voltmeter lead is on B- unless otherwise indicated.
  • Page 52 Control System Service Manual – SC1500 Color Description Ref. Measurements J3-4 Dead Man 24.4v when pressed (Key and Emergency Switch Switch also closed) J3-5 BLU/BLK Rev. Alarm 23.4v forward or stationary 1.5v in reverse J3-6 RED/WHT Motion 24v stationary 0.1v moving forward or reverse...

  • Page 53: Electrical System

    Service Manual – Advance SC1500 Electrical System Functional Description Overview The electrical system consists of the switches, circuit breakers and contactors mounted on and underneath the control panel assembly, the 150-amp main fuse, on-board battery charger (if so equipped) and the batteries.

  • Page 54: Battery Charger Circuit Descriptions

    Electrical System Service Manual – SC1500 Battery Charger Circuit Descriptions Battery Charger Not Plugged In Fuse, 150 A. Battery 12 VDC Internal Relay in Battery Charger 1 2 3 Emergency YEL/ORN Stop Dead Man Switch BRN/VIO WHT/BRN SPST Key X161C X162C...

  • Page 55: Battery Charger Plugged In

    Electrical System Service Manual – SC1500 Battery Charger Plugged In Fuse, 150 A. Battery 12 VDC Internal Relay in Battery Charger 1 2 3 Emergency YEL/ORN Stop Dead Man Switch BRN/VIO WHT/BRN SPST Key X161C X162C Circuit Breaker, 5 Amp...

  • Page 56: Component Locations

    Electrical System Service Manual – SC1500 Component Locations The following electrical components are included in this section: • Batteries • Optional On-board battery charger • Switches • Circuit Breakers • Contactors/Relays • 150-amp Fuse sit in the Batteries . To access...
  • Page 57 Electrical System Service Manual – SC1500 25-amp Circuit Breaker (CB4), 20-amp Circuit 25-amp 20-amp 5-amp 50-amp (CB3), Breaker Circuit Circuit Circuit Circuit 5-amp Circuit Breaker Breaker Breaker Breaker (CB2) and Breaker 50-amp (CB1), Circuit Breaker 100k Speed Control Potentiometer (R1),...

  • Page 58: Electrical Diagrams

    Wiring Diagram, p/n 56104081, Rev. B, Page 1 CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK-ADVANCE, INC., PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST.
  • Page 59 Wiring Diagram, p/n 56104081, Rev. B, Page 2 CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK-ADVANCE, INC., PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST.

  • Page 60: Wiring Harness Diagram, P/N 56104082, Rev. B

    Electrical System Service Manual – SC1500 Wiring Harness Diagram, p/n 56104082, Rev. B...

  • Page 61: Electrical Connector Pin-Out Assignments

    Electrical System Service Manual – SC1500 Electrical Connector Pin-out Assignments The following tables list the individual connector pin-out assignments. The tables include connector illustrations to help you identify the various connectors on the machine. The connector pin-out information is organized by connector ID in alphabetical order.

  • Page 62: Connector Pin-Out Assignment Tables

    Electrical System Service Manual – SC1500 Connector Pin-out Assignment Tables J1 (Molex Mini Fit Jr. 39012105) Pin# Conductor Wire Color W279 RED/YEL – – W280 BLU/GRA – – – – W302 RED/YEL YEL/BLK W165 W054 W055 ORN/BLK J2 (Molex Mini Fit Jr. 39012125)
  • Page 63 Electrical System Service Manual – SC1500 J3 (Molex Mini Fit Jr. 39012145) Pin# Conductor Wire Color W181 BRN/VIO – – W166 RED/BRN W294 W066 BLU/BLK W277 RED/WHT W067 ORN/BLU W182 BRN/VIO W281 GRN/BLK W282 ORN/RED W283 VIO/BLK W003 GRA/BLK W010...
  • Page 64 Electrical System Service Manual – SC1500 J4 (39012185) Pin# Conductor Wire Color – – – – W060 W272 W293 W276 RED/WHT – – – – W067 ORN/BLU – – – – W302 RED/YEL W064 W278 – – W066 BLU/BLK W166...
  • Page 65 Electrical System Service Manual – SC1500 X6 (Delphi 12052613) Pin# Conductor Wire Color W191 W194 X7 (Delphi 12015792) Pin# Conductor Wire Color W284 W283 VIO/BLK X126 (AMP 282087-1) Pin# Conductor Wire Color W172 W173 RED-VIO W174 YEL-ORN...
  • Page 66 Electrical System Service Manual – SC1500 X127 (Delphi 15363990) Pin# Conductor Wire Color W170 W171 X139 (Delphi 12020786) Pin# Conductor Wire Color W055 ORN/BLK W054 W204 RED/VIO W165 YEL/BLK – – W218 BLK/WHT X143 (Ducon 12147067) Pin# Conductor Wire Color...
  • Page 67 Electrical System Service Manual – SC1500 X144 (Delphi 12015792) Pin# Conductor Wire Color W278 W275 RED/WHT X161 (Delphi 12020926) Pin# Conductor Wire Color W272 W271 W289 WHT/BRN W293 W294...

  • Page 68: Troubleshooting

    Electrical System Service Manual – SC1500 Troubleshooting Note: Refer to the individual machine system sections for electrical troubleshooting procedures. Problem Cause Correction Discharged batteries. Check the battery voltage and charge as necessary. No power to the machine. Poor battery connection(s).

  • Page 69: Specifications

    Electrical System Service Manual – SC1500 Specifications Specifications Component Batteries (4) Six-volt, 260 amp-hour, 20-hr. Rate Input – 100-240 VAC, 50/60Hz Battery Charger Output – 24V, 25A Operating Voltage – 7-48 VDC Solid State Relay/Vacuum Motor Power Module (K1) Rated Load Current – 40A Brush Contactor (K2) Nominal Coil Resistance –...

  • Page 70: Recovery System

    Service Manual – SC1500 Recovery System Functional Description The Recovery System pulls the wastewater from the squeegee and directs it into the recovery tank. The 24-volt, three-stage electric vacuum motor creates a vacuum in the recovery tank with sufficient airflow to lift the used cleaning solution from the squeegee and into the vacuum hose assembly, which then directs the water into the recovery tank.

  • Page 71: Circuit Descriptions

    Recovery System Service Manual – SC1500 • The Solid State Vacuum Relay SSR1 controls the voltage to the Vacuum Solid State . Note that the Motor Solid State Vacuum Vacuum Relay has an LED that lights when the (SSR1) Relay is on.

  • Page 72: Vacuum Motor On

    Recovery System Service Manual – SC1500 Vacuum Motor On Bat + Bat - Control Board SPST Key Switch Vacuum Contactor Curtis 1210 BRN/VIO GRA/BLK J3-12 Bat - Speed Controller RED/WHT J3-6 Pin 6 Brake - Bat - Motion Input (0.1v)

  • Page 73: Component Locations

    Recovery System Service Manual – SC1500 Component Locations The following components are included in this section: • Recovery Tank • Vacuum Motor • Debris Cage • Float Cage Assembly • Vacuum Hose Assembly • Drain Hose • SSR1 Solid State Vacuum Relay...
  • Page 74 Recovery System Service Manual – SC1500 allows you to drain the wastewater Drain Hose from the Recovery Tank. Drain Hose controls the SSR1 Solid State Vacuum Relay power to the vacuum motor and is located inside the control panel assembly.

  • Page 75: Troubleshooting

    Recovery System Service Manual – SC1500 Troubleshooting Problem Cause Correction Check the wiring from the Key Switch S1 to terminal Vacuum motor not No voltage from the Key running - the LED Switch S1 to terminal 3+ on 3+ on relay SSR1 and repair as necessary.

  • Page 76: Removal And Installation

    Recovery System Service Manual – SC1500 Removal and Installation Vacuum Motor Drain the recovery tank. Vacuum Lift the recovery tank to access the Cover Vacuum M6 Screw, Flat Washer and Cover Cover Plate (3) Remove the three M6 Screws Flat Washers...

  • Page 77: Specifications

    Recovery System Service Manual – SC1500 Service Tip: Before you reinstall the Vacuum Cover, make sure the top of the is centered in the Vacuum Motor Recovery matching cutout in the Recovery Tank as shown. Tank Vacuum Motor Specifications Specifications...

  • Page 78: Scrub System

    • The “extra” scrub pressure position lowers the scrub deck to its extension limit so the brush/pad contacts the floor with greater than normal scrub pressure. The SC1500 can be configured with two different scrub decks: • The have a 20” brush plate assembly to 20D Scrub Decks accommodate a variety of disc brushes.

  • Page 79: Scrub Deck And Motor

    Scrub System Service Manual – SC1500 Scrub Deck and Motor 20D Scrub Deck The 20D Scrub Decks use a Brush horizontally-mounted Motor Brush Motor with an integral gearbox to drive the and attached Brush Plate Assembly . The is fastened to...

  • Page 80: Rev ™ Deck

    Scrub System Service Manual – SC1500 20R REV Deck ™ The 20R REV Scrub Decks use a ™ Motor vertically-mounted to drive the Motor and attached Pad Driver Assembly directly. The is fastened to the Motor and attached Motor Plate...

  • Page 81: Brush Motor Contactor

    Scrub System Service Manual – SC1500 Brush Motor Contactor controls the Brush Motor Contactor (K2) power to the Brush/Pad Motor. Brush Motor Contactor (K2) Deck Actuator Assembly uses an electric to run a lead screw that Deck Actuator Assembly Motor extends and retracts the .
  • Page 82 Scrub System Service Manual – SC1500 Two internal , actuated by rotating , provide Position Switches Cams actuator position feedback to the A1 Control Board. Two internal (top and bottom), also actuated by Limit Switches rotating , switch off the actuator...

  • Page 83: Circuit Descriptions

    Scrub System Service Manual – SC1500 Circuit Descriptions Scrub Brush Motor Scrub Brush Motor Off Bat + Control Board Bat - Brush WHT/RED Contactor J3-13 Curtis 1210 Bat - SPST Key Speed Switch Controller Brake - RED/WHT J3-6 Pin 6...

  • Page 84: Scrub Brush Motor On

    Scrub System Service Manual – SC1500 Scrub Brush Motor On Bat + Control Board Bat - Brush Contactor WHT/RED J3-13 Curtis 1210 Bat - SPST Key Speed Switch Controller Brake - RED/WHT J3-6 Pin 6 Bat - Motion Input (0.1v)

  • Page 85: Deck Actuator Assembly

    Scrub System Service Manual – SC1500 Deck Actuator Assembly Scrub Deck Up When the Scrub System is switched from active to not active, Deck Actuator Assembly in the Gang Switch A1 Control Control Board switches on the power to the...

  • Page 86: Scrub Deck At Normal Scrub Pressure

    Scrub System Service Manual – SC1500 Scrub Deck at Normal Scrub Pressure When the Scrub System is active, in the Gang Switch A1 Control Deck Actuator Assembly switches on the power to the Board Control Board . The Brush Lift Actuator Motor M3...

  • Page 87: Component Locations

    Scrub System Service Manual – SC1500 Component Locations The following components are included in this section: • Scrub Deck • Scrub Deck Motor • Brush Motor Contactor (K2) • Scrub Deck Actuator Assembly is suspended underneath Scrub Deck the machine and pivots up and down on a mechanical mount.
  • Page 88 Scrub System Service Manual – SC1500 controls the power Brush Motor Contactor (K2) to the scrub deck motor and is located inside the Brush Motor Contactor (K2) control panel assembly. Scrub Deck Actuator Assembly is attached to the Scrub Deck...

  • Page 89: Troubleshooting

    Scrub System Service Manual – SC1500 Troubleshooting Problem Cause Correction 1. Check the voltage on pin J3-13 on the A1 Control Brush Motor not No voltage to the K2 Brush running Contactor coil Board. The signal, referenced to ground, should be 24.3v with the Brush Motor off, 0.2v with the...

  • Page 90: Removal And Installation

    Scrub System Service Manual – SC1500 Removal and Installation Scrub Deck Turn the key switch on, then press the Scrub On/Off Switch to lower the scrub deck to the normal scrub position. This will relieve the tension between the scrub deck actuator and the scrub deck.
  • Page 91 Scrub System Service Manual – SC1500 Loosen the and remove the Clamp from the Solution Hose Solution . Note that a small Solenoid Valve Solenoid amount of solution may leak out from Electrical when you disconnect Connector Solution Hose it from the...
  • Page 92 Scrub System Service Manual – SC1500 11 Remove the and nut that Shoulder Screw connect the scrub deck actuator to the Lift on the scrub deck. Note that Plate Weldment you’ll need to hold the M8 Nyloc nut with a ®...
  • Page 93 Scrub System Service Manual – SC1500 14 Disconnect the Scrub Deck Motor Electrical Connector Scrub Deck Motor Electrical 15 Carefully slide the deck out of the machine. Connector Service Tip: The scrub motors on the 20R REV™ scrub decks are slightly taller than the motors on 20D decks.

  • Page 94: Scrub Deck Actuator Assembly

    Scrub System Service Manual – SC1500 Scrub Deck Actuator Assembly Turn the key switch on, then press the Scrub On/Off Switch to lower the scrub deck to the normal scrub position. This will relieve the tension between the scrub deck actuator and the scrub deck.

  • Page 95: Scrub Deck Actuator Adjustment

    Scrub System Service Manual – SC1500 Service Tip: If you’re going to reinstall the Scrub without readjusting Deck Actuator position. be careful not to Plunger rotate the with the Plunger Scrub Deck out of the machine. This can Actuator cause the to get Scrub Deck Actuator out of adjustment.

  • Page 96: Specifications

    Scrub System Service Manual – SC1500 Specifications Specifications Component Voltage – 24 VDC RPM – 140 20D Scrub Deck Brush Motor Current Draw – 20 Amps Output Power – 380 Watts / 1/2 HP Voltage – 24 VDC RPM – 2200 Scrub Deck ™...

  • Page 97: Solution System

    Service Manual – SC1500 Solution System Functional Description The Solution System is a gravity-feed system that supplies cleaning solution to the scrub brush/pad on the scrub deck. The detergent, supplied from the detergent tank and pump, is added to the solution upstream of the scrub deck.

  • Page 98: Solution Solenoid Valve

    Solution System Service Manual – SC1500 Solution Solenoid Valve controls the solution flow to the L1 Solution Solenoid Valve scrub deck. The solution from the solution tank enters the through the side port and exits through Solution Solenoid Valve Electrical the rear port to the scrub deck as shown.

  • Page 99: Detergent System

    Solution System Service Manual – SC1500 Detergent System The Detergent System uses an electric diaphragm to inject detergent from the Detergent Pump into the cleaning solution Detergent Cartridge upstream of the scrub deck. The A1 Control Board sends voltage pulses to the...

  • Page 100: Circuit Descriptions

    Solution System Service Manual – SC1500 Circuit Descriptions Solution Solenoid Valve Off Bat + BRN/VIO SPST Key Switch Control Board Solution Solution Line from E1 Curtis VIO/BLK Solenoid J3-11 Solenoid Valve Bat - 1210 Speed to Scrub Deck Controller Brake -...

  • Page 101: Solution Solenoid Valve On

    Solution System Service Manual – SC1500 Solution Solenoid Valve On Bat + BRN/VIO SPST Key Switch Control Board Solution Solution Line from E1 Curtis VIO/BLK Solenoid J3-11 Solenoid Valve Bat - 1210 Speed to Scrub Deck Controller Brake - RED/WHT...

  • Page 102: Detergent Pump Off

    Solution System Service Manual – SC1500 Detergent Pump Off Control Board Detergent Bat + Pump RED/YEL J1-1 + Bat - J1-3 - Detergent Detergent Pump Bat + Curtis 1210 Pump BLU/GRA Speed Controller Brake - RED/WHT J3-6 Pin 6 Pin 6...
  • Page 103 Solution System Service Manual – SC1500 Control Board Detergent Bat + Pump RED/YEL J1-1 + Bat - J1-3 - Detergent Detergent Bat + Pump Curtis 1210 Pump BLU/GRA Speed Controller Brake - RED/WHT J3-6 Pin 6 Pin 6 Bat - Motion Input (0.1v)

  • Page 104: Component Locations

    Solution System Service Manual – SC1500 Component Locations The following components are included in this section: • Solution Tank • Solution Solenoid Valve • Solution Ball Valve • Water Filter • 90° Ball Valve and Drain Hose • Detergent Cartridge •...
  • Page 105 Solution System Service Manual – SC1500 The solution controls the solution flow Ball Valve from the solution tank to the Water Filter Ball filters the solution upstream of the Valve Water Filter solution solenoid valve. Water Filter allow you to 90°...

  • Page 106: Maintenance

    Solution System Service Manual – SC1500 is located Detergent Cartridge at the front of the machine underneath the Control Panel Housing/Recovery Tank Cover, and sits above the Scrub Deck Actuator Assembly. Detergent Cartridge Maintenance Cleaning the Water Filter Close the solution...

  • Page 107: Troubleshooting

    Solution System Service Manual – SC1500 Troubleshooting Problem Cause Correction No solution to the Plugged Water Filter. Clean or replace the Filter. Scrub Deck (scrub Plugged solution line or ball Check the solution lines and ball valve and clear or system is working).

  • Page 108: Specifications

    Solution System Service Manual – SC1500 Specifications Component Specifications Specifications Component Nominal Voltage – 24 VDC, 11 Watt Solution Solenoid Valve Duty – Continuous Resistance – 55.5 Ohms ±10% @ 25° C Solution Tank Capacity – 12 gal. [45,4 l] Flow per Stroke –...

  • Page 109: Nominal Solution Flow Rates

    Solution System Service Manual – SC1500 Nominal Solution Flow Rates The nominal solution flow are listed in the following table. Note that these flow rates are based on a half-full solution tank. Solution Deck Type Nominal Flow Rate Setting 20” Disk 0.15 (gal./min.) / 0.57 l/min.

  • Page 110: Squeegee System

    Service Manual – SC1500 Squeegee System Functional Description Squeegee Assembly is designed to be easily removed from its mounting Squeegee hardware for cleaning and Link Squeegee maintenance. Mount Weldment Bracket Knob Rear Squeegee Strap holds the Assembly (4) Rear Squeegee...

  • Page 111: Component Locations

    Squeegee System Service Manual – SC1500 Component Locations The following components are included in this section: • Vacuum Hose Assembly • Squeegee Link Weldment • Knob Assemblies • Squeegee Blades • Squeegee Casting • Caster Wheel • Squeegee Mount Bracket •...

  • Page 112: Troubleshooting

    Squeegee System Service Manual – SC1500 Troubleshooting Problem Cause Correction Poor water pick-up. The squeegee blades are Check and replace the blades as necessary. torn or worn. The squeegee assembly is Readjust the squeegee as follows: out of adjustment. 1. Park the machine on a flat, even surface and lower the squeegee.

  • Page 113: Steering System

    Service Manual – SC1500 Steering System Functional Description Steering Wheel attached Steering Shaft connected to and rotate the Steering Upper Universal Joint Wheel Upper Universal Joint drives the which Hex Shaft drives the Steering Tube . Note that the Assembly...

  • Page 114: Component Locations

    Steering System Service Manual – SC1500 Component Locations The following components are included in this section: • Upper Universal Joint • Hex Shaft • Steering Tube Assembly • Lower Universal Joint • Steering Plate Upper Universal Joint Hex Shaft Steering...

  • Page 115: Troubleshooting

    Steering System Service Manual – SC1500 is fastened to the top of the Steering Plate Drive Wheel Assembly and rotates the Drive Steering Wheel Assembly to steer the machine left and Plate right. Troubleshooting Problem Cause Correction The steering is The upper and lower Realign the upper and lower universal joints.

  • Page 116: Wheel System - Traction

    Service Manual – SC1500 Wheel System - Traction Functional Description The machine is propelled by the Drive which consists of a 24- Wheel Assembly volt DC and attached Drive Wheel Motor Steering that drive an 11-tooth Sprocket Gearbox Plate drives the...

  • Page 117: Wheel Drive Motor Circuit Descriptions

    Wheel System - Traction Service Manual – SC1500 Wheel Drive Motor Circuit Descriptions Power to the E1 Curtis 1210 Speed Controller B+ B- Internal Relay in Battery Charger 1 2 3 Emergency Stop Dead Man Switch WHT/BRN SPST Key Switch...

  • Page 118: Speed Control Drive Functions

    Wheel System - Traction Service Manual – SC1500 Speed Control Drive Functions Brake +24V Brake - Pin 6 E1 Curtis 1210 Speed Controller Pin 3 High YEL/BLK Speed GRN/ORG Limit 100K Pot. Pin 18 Wheel Drive Motor Pin 13 Pot. Low...

  • Page 119: Speed Control Communication With The A1 Control Board

    Wheel System - Traction Service Manual – SC1500 Speed Control Communication with the A1 Control Board B+ B+ Control Board Brake Main Machine E1 Curtis Controller 1210 Speed Controller Motion Input Pin 6 J3-6 RED/WHT + 24v Brake - (B -)
  • Page 120 Wheel System - Traction Service Manual – SC1500 A1 Control Board Speed Controller Function Terminal Terminal Status Signal J3-7 Pin 9 - Status (B -) uses the status signal to tell the Speed Controller when it has set a fault, and which fault is Control Board set.

  • Page 121: Component Locations

    Wheel System - Traction Service Manual – SC1500 Component Locations The following components are included in this section: • Drive Wheel Assembly • E1 Curtis 1210 Speed Controller • Speed Control Adjustment Knob/100k Speed Control Potentiometer • Drive Wheel Brake...
  • Page 122 Wheel System - Traction Service Manual – SC1500 controls the Speed Adjustment Knob 100K Speed Control , labeled in the Diagram. The Wiring Potentiometer Speed is mounted on the control panel and controls the Adjustment Knob Speed machine speed in both forward and reverse.

  • Page 123: Maintenance And Adjustments

    Wheel System - Traction Service Manual – SC1500 Maintenance and Adjustments Speed Control Programming Options The following table lists the Speed Control parameters that can be accessed and changed using the 1311 Programmer. Note that these parameters normally do not need to be changed, and should not be changed arbitrarily.

  • Page 124: Troubleshooting

    Wheel System - Traction Service Manual – SC1500 Troubleshooting General Troubleshooting Note: use the Service Test Mode to simplify troubleshooting the Drive Wheel System. (Refer to the Controls System/Service Test Mode.) Problem Cause Correction Rotate the Speed Adjustment Knob to a higher...

  • Page 125: Diagnostics Method B - Curtis Programmer

    Wheel System - Traction Service Manual – SC1500 Diagnostics Method B - Curtis Programmer Diagnostics Method B uses the optional hand-held Curtis programmer model 1311. With a programmer, diagnostics and troubleshooting are more direct than with the Detergent On/Off Indicator LED alone. The...

  • Page 126: Status Led Fault Code Table

    Wheel System - Traction Service Manual – SC1500 Status LED Fault Code Table Status Light Explanation Possible Cause Code Display Over-/under-temperature cutback 1. Temperature >92°C or < -25°C 2. Excessive load on vehicle 3. Operation in extreme environments 4. Electromagnetic brake not releasing.

  • Page 127: Removal And Installation

    Wheel System - Traction Service Manual – SC1500 Removal and Installation Drive Wheel Assembly Loosen the holding the in the Setscrew Steering Assembly Tube lower Steering Universal Joint Assembly Tube Universal Joint Setscrew Disconnect the upper Brake Drive Motor Drive Motor...
  • Page 128 Wheel System - Traction Service Manual – SC1500 Remove the four and flat washers holding each M8 x 30 Screws of the two to the machine and remove the Tip Pads Tip Pads M8 x 30 Screw (4) Caution: Tipping the machine on its side without...

  • Page 129: Drive Wheel Motor

    Wheel System - Traction Service Manual – SC1500 To reinstall the and attached , follow the above steps in Drive Wheel Assembly Spindle Mount Weldment reverse order. Service Tip: Make sure the axes of the two are parallel Universal Joints...
  • Page 130 Wheel System - Traction Service Manual – SC1500 Remove the and remove the chain. Master Link Master Link Disconnect the lower Brake Drive Motor Electrical Connectors Brake Electrical Connector Drive Motor Electrical Connector Remove the four and flat M6 x 25 Screws...

  • Page 131: Steering Spindle Bearings

    Wheel System - Traction Service Manual – SC1500 Steering Spindle Bearings Remove the Drive Wheel Assembly and attached Spindle Mount Weldment from the machine. (Refer to subsection above.) Drive Wheel Assembly Remove the Drive Motor from the Drive Wheel Frame Weldment. (Refer to the Drive Wheel Motor subsection above.)
  • Page 132 Wheel System - Traction Service Manual – SC1500 Carefully remove the from the Bearing Block Shaft Seal Bearing Cup Bearing Cone Replace the as necessary. Make sure the is greased Shaft Seal Bearing Cup Bearing Cone Bearing Cone adequately with a high-quality lithium-base grease before reassembly.

  • Page 133: Drive Wheel Motor Maintenance

    Wheel System - Traction Service Manual – SC1500 Reassemble the Drive Wheel Assembly by following the above steps in reverse order. Note that when you reinstall the onto the Spindle Weldment, torque the to 20 ft.-lbs. 1”-14 Nyloc ® Drive Wheel Motor Maintenance Replacing the Motor Brushes Remove the Drive Wheel Assembly and attached Spindle Mount Weldment from the machine.

  • Page 134: Specifications

    Service Manual – SC1500 Specifications Shop Measurements The following table lists measurements taken from one SC1500. While these are not “specifications”, they can help you recognize abnormal vs. normal conditions. Note that the black voltmeter lead is on B- unless otherwise indicated.

  • Page 135: E1 Curtis 1210 Speed Controller - Output

    Wheel System - Traction Service Manual – SC1500 E1 Curtis 1210 Speed Controller – Output Ref. Measurements FWD low speed 12.6v FWD high speed 23.4v REV low speed 11 v REV high speed 3.9v FWD low speed 11.2v FWD high speed 0.17v...

  • Page 136: Special Tools

    Wheel System - Traction Service Manual – SC1500 Special Tools Curtis 1311 Handheld Programmer, p/n 56409441...

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