Nilfisk-Advance Adphibian AX 651 Multi EDS Service Manual
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Nilfisk-Advance Adphibian AX 651 Multi EDS Service Manual

Nilfisk-Advance Adphibian AX 651 Multi EDS Service Manual

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Adphibian™/AX 651 Multi EDS
AquaPLUS™
Service Manual
Advance Adphibian Model 56317000
Nilfisk AX 651 Multi EDS Model 56317003
Advance AquaPLUS Models 56317001, 56317002
11/10 Form No. 56043116

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Summary of Contents for Nilfisk-Advance Adphibian AX 651 Multi EDS

  • Page 1 Adphibian™/AX 651 Multi EDS AquaPLUS™ Service Manual Advance Adphibian Model 56317000 Nilfisk AX 651 Multi EDS Model 56317003 Advance AquaPLUS Models 56317001, 56317002 11/10 Form No. 56043116...

  • Page 2: Table Of Contents

    Contents Introduction ......................6 Parts and Service ....................6 Nameplate ......................6 Part Number .......................6 Serial Number ....................6 Transporting the Machine ...................6 Towing ........................6 Other Manuals and Information Sources for Your Machine ........ 7 Adphibian ......................7 AX 651 Multi EDS ...................7 AquaPLUS/AquaPLUS AXP ................7 Cautions and Warning Symbols .................
  • Page 3 Symptom One - No Solution Flow While in the Scrub Auto Solution Mode .. 34 Symptom Two - Solution Pump Will Not Operate ......... 35 Solenoid Valve Removal...................36 Solenoid Valve Disassembly and Cleaning ............36 Solution Filter and Shutoff Valve Removal ............36 Solution Pump Removal ...................36 Scrub System .....................37 Functional Overview ..................37...
  • Page 4 Wheel Drive System ..................60 General Functional Overview ................60 Drive Motor System Function ................61 Electrical Diagram ..................61 A1 Speed Control Pin Connections ..............62 Low Current A1 Speed Control Pin Key Detail ..........62 Wheel Drive Troubleshooting Guide ..............63 Drive Motor Transaxle Removal ...............64 Drive Motor Transaxle Removal (continued) ............
  • Page 5 General Instructions for All Actuator Motors ..........76 Adjusting the Drive Nut on the Scrub Brush Lift Actuator ......77 Curtis Controller Diagnostics ................79 Diagnostics Method A - LED Panel and Wand Switch Indicator....79 Diagnostics Method B - Curtis Programmer ..........79 Diagnostic History ..................80 Speed Control Programming Options ..............

  • Page 6: Introduction

    Introduction This manual will help you get the most from your Nilfisk-Advance machine. Read it thoroughly before servicing the machine. Note: Bold numbers and letters in parentheses indicate items illustrated in the Know Your Machine section. Parts and Service Repairs should be performed by your Authorized Nilfisk-Advance Service Center, who employs factory trained service personnel, and maintains an inventory of Nilfisk-Advance original replacement parts and accessories.

  • Page 7: Other Manuals And Information Sources For Your Machine

    • Nilfisk-Advance website: www.Nilfisk-Advance-us.com • EzParts service / parts CD-ROM 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 8: General Safety Instructions

    • This machine is not approved for use on public paths or roads. • This machine is not suitable for picking up hazardous dust. • Use care when using scarifier discs and grinding stones. Nilfisk-Advance will not be held responsible for any damage to floor surfaces caused by scarifiers or grinding stones.
  • Page 9 • Do not use on surfaces having a gradient exceeding that marked on the machine. • All doors and covers are to be positioned as indicated in the instruction manual before using the machine. • Refer to the Electrical System section at back of this manual for additional specific battery charger warnings. Save These Instructions Form No.

  • Page 10: Technical Specifications

    Technical Specifications Voltage 24 Volt Power Source (4) 6 volt batteries (wet acid and gel cell available) Onboard Battery Charger 24 volt, 25 amp Wet/Gel Compatible Solution Control Precision-flow electric pump/solenoid valves Solution Tank 20 gal. (76L) Recovery Tank 20 gal. (76L) Solution Capacity 20 gal (76 L) Solution Pump...

  • Page 11: General Maintenance

    Note: See the individual machine system sections for maintenance information. * Have Nilfisk-Advance check the vacuum motor carbon brushes once a year or after 300 operating hours. Check the brush motor and drive motor carbon brushes every 500 hours or once a year.

  • Page 12: Batteries And Chargers

    Batteries and Chargers Attention: See the Electrical System section for battery installation, battery maintenance and charger system requirements. Lubricating the Machine Once a month, apply light machine oil to lubricate the following components: Adphibian/AX 651 Refer to Figure 1. Figure 1 Once a month lubricate the pivot points below.
  • Page 13 Advance Adphibian™/AX 651/AquaPLUS™ PM Checklist Defect Codes Customer needs adjustment binding Address dirty or contaminated damaged, bent or torn City leaks missing Model Serial Hours worn out Does Operational Inspection Items Defect Codes (circle) Work Drive Paddle Operation (check for fwd/rev drive and any neutral creep) Drive System Performance (speed changes min/max) noisy sluggish...

  • Page 14: Know Your Machine

    Know Your Machine Major Components As you read this manual, you will occasionally run across a bold number or letter in parentheses - example: (2). These numbers refer to an item shown on this page unless otherwise noted. Refer back to this page whenever necessary to pinpoint the location of an item mentioned in the text.

  • Page 15: Major Components (Continued)

    Major Components (continued) Operator Control Handle 30B Vacuum Recovery Hose (scrub position) Drive Paddle Solution Shutoff Valve Speed Control Knob Recovery Drain Hose Cap Solution Drain Hose / Level Indicator Control Panel 10-amp Control Circuit Circuit Breaker Vacuum Shutoff Switch* 30-amp Drive Motor Circuit Breaker Squeegee Adjustment Knob* Recovery Tank Drain Hose...

  • Page 16: Control Panel - Adphibian/Ax 651 Multi Eds - Scrub Mode

    Control Panel - Adphibian/AX 651 Multi EDS - Scrub Mode Key Switch (Main Power) D13 Solution OFF Indicator Detergent System D14 Light Scrub Pressure Indicator Solution Pre-spray Switch D15 Solution Active Indicator Display Panel D16 Heavy Scrub Pressure Indicator D1 AXP Indicator Vacuum Switch D2 Hour Meter/Battery Indicator Speed Control Fault Code Indicator...

  • Page 17: Control Panel - Adphibian/Ax 651 Multi Eds - Extract Mode

    Control Panel - Adphibian/AX 651 Multi EDS - Extract Mode Key Switch (Main Power) D8 Heavy Pre-spray Mode Detergent System D9 Recovery Tank Full Indicator Solution Pre-spray Switch D10 Battery Low Indicator Display Panel D11 Extract Mode Indicator D1 AXP Indicator Vacuum Switch D2 Hour Meter/Battery Indicator Speed Control Fault Indicator...

  • Page 18: Control Panel Switch Functions - Adphibian/Ax 651 Multi Eds

    Control Panel Switch Functions - Adphibian/AX 651 Multi EDS Key Switch (A) Main power switch. Detergent System (B) This switch controls the AXP system. • Pressing and releasing this switch while the solution system is active will toggle the AXP system on and off. • The AXP Indicator (D1) informs the operator when the detergent bottle is low.
  • Page 19 If the scrub system is activated in extract or scrub mode, pressing this switch will cause the solution system to alternate between disabled and enabled. The solution flow will only turn on when the throttle is moved from the neutral position to the forward direction.
  • Page 20 • The vacuum system will be enabled. Both vacuum motors will be activated when the machine is in an extract mode. • The solution system will be enabled for the LIFT mode. • The travel speed will be limited to the LIFT mode speed setting. • As soon as the throttle is moved from the neutral position, the scrub brushes will start turning and the vacuum will turn on.

  • Page 21: Control Panel Indicators - Adphibian/Ax 651 Multi Eds

    • The detergent system will be enabled. • The travel speed will be variable from 20% to 100%. • As soon as the throttle is moved from the neutral position, the scrub brushes will start turning and the vacuum will turn on.
  • Page 22 Indicator Voltage Levels for Standard Cutout Level: • 5 Bars = full charge down to 23.8 volts • 4 Bars = 23.7 volts down to 23.6 volts • 3 Bars = 23.5 volts down to 23.2 volts • 2 Bars = 23.1 volts down to 22.5 volts • 1 Bar = 22.4 volts down to 21.7 volts • 0 Bars = 21.6 volts down to 20.6 volts • Low Voltage Warning Screen = less than 20.5 volts.
  • Page 23 Heavy Pre-spray Mode (D8) Indicates that the machine is in the heavy pre-spray mode. Recovery Tank Full Indicator (D9) Warns the operator that the recovery tank is full. Battery Low Indicator (D10) Displays the “attention” symbol when the batteries require recharging. Note that the vacuum motors will shut off 30 seconds after the Battery Low indicator is displayed.

  • Page 24: Control Panel - Aquaplus

    Control Panel - AquaPLUS Key Switch (Main Power) D6 Restoration Extract Mode Indicator Detergent System D7 Fast Pre-spray Mode Solution Pre-spray Switch D8 Heavy Pre-spray Mode Display Panel D9 Battery Low Indicator D1 AXP Indicator Vacuum Switch D2 Hour Meter/Battery Indicator Speed Control Fault Code Indicator D3 Fault Indicator Wand Switch...

  • Page 25: Control Panel Switch Functions - Aquaplus

    Control Panel Switch Functions - AquaPLUS Key Switch (A) Main power switch Detergent System (B) This switch controls the AXP system. • Pressing and releasing this switch while the solution system is active will toggle the AXP system on and off. • The AXP Indicator (D1) informs the operator when the detergent bottle is low.
  • Page 26 If the scrub system is activated in the maintenance or restoration extraction mode, pressing this switch will cause the following to occur: • The solution system will toggle between disabled and enabled. The solution flow will only turn on when the throttle is moved from the neutral position in the forward direction.
  • Page 27 Scrub ON Switch (J) If the scrub system is off or in the restoration extract mode, pressing this switch will cause the machine to enter maintenance extract mode. The following will occur: • The scrub system will be enabled with the system configured for the maintenance mode, and the scrub deck will be lowered.

  • Page 28: Control Panel Indicators - Aquaplus

    Control Panel Indicators - AquaPLUS AXP Indicator (D1) Machines equipped with an AXP system have an AXP indicator in the lower left corner of the display. When AXP is enabled, the indicator will show a detergent bottle icon. When AXP is disabled, the detergent bottle icon will have a cross through it.

  • Page 29: General Guidelines For Control Panel Indicators

    Fault Indicator (D3) If an electrical fault occurs, the fault indicator will display the associated error code immediately. The error code number will be displayed with a wrench icon right of the battery condition indicator. Refer to the Error Code section for descriptions.

  • Page 30: Solution System

    Solution System Functional Overview The Adphibian, AX 651 Multi EDS and AquaPLUS models have a solution tank capacity of 20 gallons (76 liters). All models use one right rear tank fill opening. A flexible clear hose on the side of the solution tank indicates the solution level, and is used to drain the tank for system maintenance.

  • Page 31: Circuit Overview - Solution Auto Mode (Solenoid Valve Circuit)

    Note: See the Control Panel Switch Functions sections in this manual for a complete explanation of the solution operation modes. During normal machine scrubbing the solution system’s Auto Mode is selected and works in conjunction with the wheel drive speed controller and the (A1) main controller’s scrub system outputs to turn solenoid valves L1 and L2 and solution pump M1 on and off.
  • Page 32 - (Negative) circuit input starts with: • Battery negative ground inputs at the A1 Control Board and A2 Speed Control Ground terminals. • The A1 control board solution button enabled. • A negative voltage output from the A2 speed controller’s (pin #6) RED/BLK wire to the A1 control board RED/BLK wire (terminal J1-5).

  • Page 33: Solution System Maintenance

    Solution System Maintenance Solution Tank 1. Empty the solution tank weekly. 2. Remove the solution Drain Hose from its storage area (located on the right rear control handle compartment). Direct the hose to a designated “Disposal Site” and flush the tank with clean water. Solution Filter See Figure 5.

  • Page 34: Symptom One - No Solution Flow While In The Scrub Auto Solution Mode

    Symptom One - No Solution Flow While in the Scrub Auto Solution Mode Note: Activate the Service Test Mode Program. See the optional program section for instructions. All testing will be performed in the Service Test Mode Program. While in the Remove the solution feed hoses from solution solenoid Service Test...

  • Page 35: Symptom Two - Solution Pump Will Not Operate

    Symptom Two - Solution Pump Will Not Operate Note: Activate the Service Test Mode Program. See the optional program section for instructions. All testing will be performed in the Service Test Mode Program. Check for (+) 24V to Bat.(-) Disconnect the from the red main harness pump wire Repair wiring...

  • Page 36: Solenoid Valve Removal

    Solenoid Valve Removal 1. Drain the solution tank or turn the solution filter ball valve to the off position to prevent solution loss. 2. Lower the deck and disconnect the battery supply to the machine. 3. Remove the front nose cone from the machine by firmly grasping the lower part and lifting straight up. 4.

  • Page 37: Scrub System

    Scrub System Functional Overview The machines use two cylindrical brushes that counter-rotate to sweep up light debris and scrub at the same time. Each scrub brush is powered on opposing ends by 1/2 HP permanent magnet motors attached to separate poly-V belt/ pulley drives.

  • Page 38: M3 - Scrub Brush Actuator Lift Motor Function

    M3 - Scrub Brush Actuator Lift Motor Function The Scrub Brush Actuator continuously raises and lowers the scrub deck as needed to maintain optimum brush contact with the floor surface. The Scrub Brush Actuator lift motor is controlled by the amount current drawn by the scrub brush motors as follows: • If the control board senses that the brush motors are drawing too much current, the Scrub Brush Actuator lift motor raises the scrub deck until the brush motor current draw is within the acceptable range.
  • Page 39 Figure 7 Fuse, 150 A Onboard Battery Charger A1 Control Board Interlock J2-4 BRN/WHT B+ Unswitched BRN/WHT J2-8 B- Switched Circuit Breaker, 10 A. Switch, SPST Key VIO/YEL Motor, Brush Actuator WHT/GRN VIO/BLK J1-1 Brush Contactor Coil, Brush Motor Contactor J2-5 Ground J2-6...

  • Page 40: Scrub Brush Deck Removal

    Scrub Brush Deck Removal 1. Turn the Key Switch on and lower the scrub deck. 2. Lift up and remove the cover and nose cone from the front of the machine. 3. Disconnect the electrical connector from the deck actuator motor to prevent the deck from rising once the Key Switch is turned off.
  • Page 41 13. Remove the Clips holding the Gas Springs to the Actuator Yoke, then remove the actuator assembly from the machine. Clip Spring 14. Disconnect the two Pivot Links from the deck weldment. Note that Left-hand there is a Bushing in the Left-hand Pivot Link and a Flange Bearing in Pivot Link the Right-hand Pivot Link (as viewed from the operator position).

  • Page 42: Scrub Brush Motor Removal

    16. Remove the cotter hair pins and ring pins that attach the scrub deck to the machine chassis linkage arms, then rotate the arms out of the way. 17. Carefully slide the deck toward the front of the machine. Note that you may need to loosen the fasteners holding the two Pivot Links together to free the deck weldment from the Pivot Links.

  • Page 43: Scrub Brush System Maintenance

    Scrub Brush System Maintenance The scrubbing system must be serviced at regular intervals to maintain good scrubbing performance. Follow the maintenance steps listed below: Daily Maintenance Weekly Maintenance Monthly Maintenance Rinse and clean any built-up Clean the drain holes in the solution delivery trough on Inspect the scrub brush debris from the debris hopper top of the scrub deck.
  • Page 44 8. Remove the Cotter Hair Pin from one side of the Actuator Pin, then remove the Actuator Pin and the two Spacers from the deck weldment and Actuator Tube. Cotter Hair Pin (2) Spacer (2) Actuator Service Tip: It is important that the actuator motor is not run or the actuator is not rotated while it is disconnected from the deck or chassis mounts.
  • Page 45 Scrub Brush Removal and Installation 1. Make sure the deck is raised, then turn the Key Switch off and disconnect the battery pack. 2. See Figure 9. Loosen the black knobs (one on each side) that secure the removable bearing Idler Support Plate Assembly (9) to the brush housing, then pull the plates down and out to remove.

  • Page 46: Recovery System

    Recovery System Functional Overview See Figure 10. Dirt and water are lifted off the floor into the recovery tank by airflow created by two three-stage 24V vacuum motors. Note that in the scrub mode only one vacuum motor will run. In the Extract mode both vacuum motors will run due to the increased airflow required to remove the wastewater from carpeting through the extraction/vacuum shoes.

  • Page 47: Extract Mode - All Machines

    The wastewater and air enter the vacuum system either of two ways: Extract mode - All machines The wastewater and air enter the vacuum system through the extraction/vacuum shoe assemblies. The air and wastewater move through the vacuum hoses at high speed until they reach the recovery tank. Scrub Mode - Adphibian and AX 651 Multi EDS only The wastewater and air enter the vacuum system at the squeegee tool through small openings (notches) located in the front squeegee blade.
  • Page 48 Note: Refer to Figure 12 for an illustration of the float switch configuration. Figure 11 Fuse, 150 A Onboard Battery Charger A1 Control Board Interlock J2-4 BRN/WHT B+ Unswitched J2-8 BRN/WHT B- Switched Circuit Breaker, 10 A. Switch, SPST Key BLU/RED J2-1 Vacuum Contactor...

  • Page 49: Vacuum / Recovery System Service Maintenance Checklist

    Vacuum / Recovery System Service Maintenance Checklist Whenever there is a vacuum problem, it’s best to check over the entire system. Use the checklist below as a guide, to thoroughly check the vacuum system. Inspect and clean the vacuum motor float switch. Inspect the vacuum motor inlet screens and clean any built-up debris from the screens.

  • Page 50: Maintenance Of Recovery Tank Float Switch

    Maintenance of Recovery Tank Float Switch See Figure 12. If the recovery tank float switch becomes dirty it can impair its operation. A dirty vacuum shutoff switch can cause the vacuum motors to not function at all, or not shut off when the tank is full. If daily rinsing of the recovery tank is not adequate to keep the switch clean, you may need to remove the float arm for cleaning.

  • Page 51: Maintenance Of The Vacuum Motor Inlet Screens

    Maintenance of the Vacuum Motor Inlet Screens Figure 13 The two Vacuum Motor Inlet Screens (4) should be cleaned on a daily basis. DO NOT run water down the screens in an attempt to clean them. If you do this you will be running water directly into the vacuum motors.

  • Page 52: Vacuum Shoe Maintenance

    Vacuum Shoe Maintenance Check the vacuum shoes daily. Remove any built-up string, hair or carpet fibers. To remove: 1. Press the red Scrub OFF Switch (H). Turn the master Key Switch (A) off. 2. Remove the Debris Hopper (29). Note: Remove the left side shoe first to allow clearance for the right side shoe to slide out. 3.

  • Page 53: Vacuum Motor Removal

    Vacuum Motor Removal 1. Drain the recovery tank using the drain hose. 2. Turn the key off and disconnect the battery pack. 3. See Figure 15. Swing open the Recovery Tank and remove the Vacuum Cover (seven screws and washers). 4.
  • Page 54 Figure 15 Recovery Tank Cover Recovery Lid Gasket Fan Inlet Screen Drainhose Recovery Tank Float Switch Vacuum Vacuum Hose Assembly Motor Gasket Vacuum Motor Vacuum Duct Gasket Vacuum Duct Gasket Vacuum Cover Plate Gasket Vacuum Cover 54 - Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™...

  • Page 55: Squeegee Lift Linkage Adjustment (Adphibian And Ax 651 Multi Eds Only)

    Squeegee Lift Linkage Adjustment (Adphibian and AX 651 Multi EDS Only) Also refer to the Know Your Machine section. The rear-mounted Squeegee Raise/Lower Lever (36) raises and lowers the squeegee pick-up tool manually. Adjust the squeegee tool storage and operating positions as follows: 1.

  • Page 56: Servicing The Squeegee

    Servicing The Squeegee If the squeegee leaves narrow streaks or water, the blades may be dirty or damaged. Remove the squeegee, rinse it under warm water and inspect the blades. Reverse or replace the blades if they are cut, torn, wavy or worn. To Reverse or Replace the Rear Squeegee Wiping Blade 1.

  • Page 57: To Reverse Or Replace The Front Squeegee Blade

    To Reverse or Replace the Front Squeegee Blade 1. See Figure 17. Raise the squeegee tool off the floor, loosen the two Thumb Nuts (20), disconnect the Recovery Hose (28) and remove the Squeegee Assembly (12) from the mount. 2. Remove both rear Tension Straps (26). 3.

  • Page 58: Squeegee Mount Assembly Removal

    Squeegee Mount Assembly Removal 1. See Figure 18. Disconnect the Squeegee Hose (28) and remove the Squeegee Assembly (12) from the machine. 2. Lower the Squeegee Lever (15) and disconnect the Squeegee Lift Cable (C) from the squeegee mount bracket. 3.

  • Page 59: Caster Wheel Removal

    Caster Wheel Removal Warning! Disconnect the battery pack connector before servicing machine. Warning! Never work under machine without safety stands or blocking to support the machine. 1. Drain both the solution and recovery tanks. 2. Remove the squeegee assembly and have the scrub deck in the up (stored) position with the scrub brushes installed.

  • Page 60: Wheel Drive System

    Wheel Drive System General Functional Overview See Figures 20 and 21. A 300-watt (.4 HP) permanent magnet (24V) motor transaxle (M8) is used for the wheel drive on all machines. A Curtis PMC solid-state speed controller (A2) regulates the variable speed and Forward/Reverse wheel drive motor functions.

  • Page 61: Drive Motor System Function

    Drive Motor System Function See Figures 21 and 22. With the Key Switch S1 closed, the BRN wire inputs 24V to the A2 speed controller (pin 5-KSI) to make its internal control circuits operational (powering it up). The CB2 circuit breaker (30-Amp) supplies the positive load circuit voltage input to the B+ controller terminal (WHT/YEL wire).

  • Page 62: A1 Speed Control Pin Connections

    A1 Speed Control Pin Connections R2 Voltage Values R1 Voltage Values 0V -= Minimum Speed 2.5V - 5V Forward 5V = Maximum Speed 0 - 2.5V Reverse Figure 22 WHEEL DRIVE SYSTEM R1 Throttle 5K Ohms A1 Speed Control Pin Connection POT HIGH STATUS BRAKE...

  • Page 63: Wheel Drive Troubleshooting Guide

    Wheel Drive Troubleshooting Guide Problem Possible Cause • Wheel Drive Motor Circuit Breaker (CB2) tripped - reset 30A circuit breaker • Control Circuit Circuit Breaker (CB1) tripped - reset Wheel drive motor will not run in forward and reverse. circuit breaker • Defective Wheel Drive Motor - replace motor • Defective Throttle Potentiometer (R1) - replace * • Test the Forward and Reverse (R1) wiring outputs (pins...

  • Page 64: Drive Motor Transaxle Removal

    Drive Motor Transaxle Removal Warning! Disconnect the battery pack before servicing machine. Warning! Never work under machine without safety stands or blocking to support the machine. 1. Drain both the solution and recovery tanks and remove the squeegee (if so equipped). 2.

  • Page 65: Drive Motor Transaxle Removal (Continued)

    Drive Motor Transaxle Removal (continued) 1. See Figure 24. Jack the front of the machine from this location until the drive wheels are approximately 1” off the ground. 2. Remove the eight Locknuts (A) and then remove the two Drive Wheels (B) from the transaxle. 3.

  • Page 66: Drive Wheel Removal

    Drive Wheel Removal Warning! Disconnect the battery pack before servicing machine. Warning! Never work under machine without safety stands or blocking to support the machine. 1. Remove the squeegee (if so equipped) and place wood blocking in front and rear of the opposite drive wheel that you are removing to prevent the machine from rolling.

  • Page 67: Directional/Throttle Potentiometer (R1)

    5K Directional/Throttle Potentiometer (R1) Warning! Disconnect the battery pack before servicing machine. Testing the 5K Directional/Throttle Potentiometer R1 Note: The potentiometer (pot) doesn’t have to be removed from its housing mount to test. 1. See Figure 26. Remove the front Drive Paddle Cover (G) from the Rear Housing (H) held together with four Screws (I) .

  • Page 68: Removing The R1 5K Potentiometer

    Figure 28 Removing the R1 5K Potentiometer 1. See Figure 28. Loosen the pot shaft anchor nut and spin it to the end of the shaft. 2. Back out the Screw (J) from the pot Fork (K). 3. Maneuver the pot (R1) out from its mounting bracket hole and separate the Fork (K) from the shaft end.

  • Page 69: 100K Potentiometer (R2)

    100K Potentiometer (R2) Warning! Disconnect the battery pack before servicing machine. Note: The potentiometer (pot) doesn’t have to be removed from the drive paddle cover to test. Test Procedure 1. See Figure 26. Remove the front drive paddle Cover (G) from the Rear Housing (H) held together with four Screws (I).

  • Page 70: Electrical System

    Electrical System Batteries If your machine shipped with batteries installed, do the following: • Check that the batteries are connected to the machine (17). • Turn on the Key Switch (A) and check the Battery Indicator (D2). If the gauge is completely filled, the batteries are ready for use. If the gauge is less than full, the batteries should be charged before use.

  • Page 71: Specific Wet Cell Battery Information

    • Use a combination of multiple 2-volt cell units to construct a 24-volt DC battery pack system. • The battery pack capacity recommended by Nilfisk-Advance is a 238 AH @ 20 Hour Rate deep cycle battery system. Note: The battery pack must fit the battery compartment as listed in the Technical Specifications.

  • Page 72: Description Of The Low-Voltage Cutout Feature

    Description of the Low-voltage Cutout Feature All models covered in this manual are equipped with a low-voltage cutout feature to prevent over-discharging of the batteries. When a machine’s battery pack voltage falls below a specifically defined threshold (voltage setting), the scrub system is automatically shut down.

  • Page 73: Charging Wet Batteries

    Charging Wet Batteries Charge the batteries each time the machine is used, or when the Battery Indicator (D2) is reading less than full. Warning! • Do not fill the batteries before charging. • Charge batteries in a well-ventilated area. • Do not smoke while charging the batteries. When Servicing Wet Batteries •...

  • Page 74: Charging Gel (Vrla) Batteries

    Caution! Acid can spill onto the floor if the batteries are overfilled. 3. Tighten the vent caps. 4. Wash the tops of the batteries with a solution of baking soda and water (2 tablespoons of baking soda to 1 liter of water).

  • Page 75: If Your Machine Shipped Without An Onboard Battery Charger, Do The Following

    If your machine shipped without an onboard battery charger, do the following: 1. Disconnect the batteries from the machine and push the connector from the charger into the Battery Pack Connector (17). 2. Follow the instructions on the battery charger. Service Note: Make sure you plug the battery charger into the connector with the handle attached to it.

  • Page 76: Actuator Drive Nut Adjustment

    Percent of Charge Specific Gravity 100% (full charge) 1.265 1.225 1.190 1.155 0% (discharged) 1.120 2. Use a voltmeter to check the voltage of each battery with the scrub and drive motors running. The battery with the dead cell will read 1 or 2 volts lower than the other batteries in the system. If the batteries in the machine are more than one year old, it’s usually best to replace the whole set, rather than replacing just one battery.

  • Page 77: Adjusting The Drive Nut On The Scrub Brush Lift Actuator

    Adjusting the Drive Nut on the Scrub Brush Lift Actuator Figure 32 1. See Figures 32 and 33. On a new scrub lift actuator motor, remove (spin-off) the Drive Nut (B) and slide on the Spring Housing Guide (A). 2. Install the short compression Spring (C) onto the actuator (lead screw) shaft.
  • Page 78 Service Tip: See Figure 33. Note the correct orientation of the Spring Housing (D) when installing the complete motor assembly. Run the spring housing assembly to the IN (retracted) position for before you install it in the machine. Figure 33 78 - Form No.

  • Page 79: Curtis Controller Diagnostics

    Curtis Controller Diagnostics Diagnostics Method A - LED Panel and Wand Switch Indicator Diagnostics Method A uses the machine’s control display LED panel and wand switch indicator. The Curtis 1210- (24V) speed control will output a fault code if there is a problem associated with the speed control and wheel drive system. See Figure 34.

  • Page 80: Diagnostic History

    Figure 34 Fault Indicator Diagnostic History The handheld programmer can be used to access the controller’s diagnostic history file. Connect the programmer, press the key, then while continuing to hold the key, press the key. The MORE INFO MORE INFO DIAGNOSTICS programmer will read out all the faults that the controller has experienced since the last time the diagnostic history file was cleared.
  • Page 81 Status LED Fault Codes (Table 1) Status Light Code Display Explanation Possible Cause 1. Temperature >92°C or < -25°C. 2. Excessive load on vehicle 3. Operation in extreme environments. over-/under-temperature cutback 4. Electromagnetic brake not releasing. 1. Throttle input wire open or shorted 2.

  • Page 82: Speed Control Programming Options

    Speed Control Programming Options Following is a list of the speed control parameters that can be adjusted using a Curtis hand held programmers: • M1 MAX SPEED – Transport/Scrub speed maximum limit (% of full throttle) • M2 MAX SPEED – Not applicable •...

  • Page 83: Programming Vehicle Speed Changes

    Note: Before pressing the diagnostics key, wait until model # screen appears, if the throttle is activated prior to this screen appearing the controller will shut down. • If there is a problem, the LED will flash a diagnostic code and the programmer will display a diagnostic message. If you are conducting the checkout without a programmer, look up the LED diagnostic code in the Curtis Controller Diagnostics section of this chapter and Status LED Fault Codes (Table 1).

  • Page 84: Troubleshooting Guide

    The secondary function of the main control board is to detect any system failures and display an error code on the display LED panel, or store it in the main control board’s recall memory mode. The error code(s) are used to help the service person determine the fault and to quickly guide in repairing a specific system malfunction.
  • Page 85 Display Fault Description Troubleshooting Action Code 1. Check for wiring problems (short) on the coil circuit and repair wiring. Brush motor contactor coil K1 2. Check the coil resistance. The nominal resistance is 53 ohms for White Rogers overload. and 100 ohms for Ametek. If resistance is below 45 Ohms, replace the solenoid. 1.

  • Page 86: Service Test Mode

    ** See Service Test Mode in this manual for further trouble shooting information. *** See the Main Control Board Special Program Options section to activate the brush type selection function. *Short Circuit definition: • A short circuit is a parallel path of very low resistance, often caused accidentally. •...

  • Page 87: Panel Indicators - Service Test Mode

    Panel Indicators – Service Test Mode See Figure 35 for panel display. – indicates the machine is in the Service Test Mode. • SVCTEST • Battery Status Display – displays the battery voltage. This display is accurate to within +/- 0.15 volts. Therefore, the voltage displayed may not correlate precisely to a high-accuracy, calibrated voltmeter.

  • Page 88: To Run The Wheel Drive Motor

    To Run the Wheel Drive Motor The Drive Paddle (20) controls the wheel drive motor in the Service Test Mode. • With the Drive Paddle in the neutral position, the machine will remain stationary. The display will read SPD:OFF • Pressing the Drive Paddle forward will move the machine forward. The display will read SPD:FOR •...

  • Page 89: To Switch The Vacuum Motors On And Off

    To Switch the Vacuum Motors On and Off The Vacuum Switch (E) controls the vacuum motors in the Service Test Mode. • Pressing the Vacuum Switch when both vacuum motors are off switches on the main vacuum motor. The display will read VAC:1 •...

  • Page 90: To Switch The Detergent (Axp) System On And Off (On Machines So Equipped)

    To Switch the Detergent (AXP) System On and Off (on machines so equipped) The Detergent System switch (B) controls the chemical pump in the Service Test Mode. • Pressing the Detergent System switch switches on the chemical pump. The display will read CPUMP:ON •...

  • Page 91: Selecting The Scrub Pressure Current Limits

    Selecting the Scrub Pressure Current Limits The Adphibian, AX 651 Multi EDS and AquaPLUS use the combined scrub brush motor current draw to determine if the scrub pressure is correct for the selected scrub mode. • If the current draw goes above the upper limit, the scrub deck lift actuator raises the deck until the scrub motor current draw is within the selected range.

  • Page 92: Restoring The Scrub Pressure Limits To The Factory Default Settings

    Restoring the Scrub Pressure Limits to the Factory Default Settings Factory Default: Maintenance Mode – 9, Restoration Mode – 9, Pre-spray Mode – 9 To restore the scrub pressure limits to the default setting, perform the following steps: 1. Turn the Key Switch (A) to the off position. 2.

  • Page 93: Displaying The Control Unit Revision Level

    6. Press and release the Scrub ON Switch (J) to select between the wrench icon for fault detection enabled, or the wrench icon with a cross through it for fault detection disabled. 7. Once the desired setting is shown, press the Scrub OFF Switch to save it. The display will now show a key icon to indicate the procedure is done.

  • Page 94: Factory Reset

    1. Turn the Key Switch (A) to the off position. 2. Press and hold the Detergent System switch (B). 3. While holding the switch, turn the Key Switch to the on position. 4. Continue to hold the switch until the detergent indicator is yellow. 5.

  • Page 95: Electrical Wiring Diagram/Schematic

    Electrical Wiring Diagram/Schematic 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 96: Electrical Ladder Diagram

    CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY O PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH Electrical Ladder Diagram AGREES TO RETURN IT UPON REQUEST. DWG.

  • Page 97: Detergent (Axp) System Plumbing Schematic

    Detergent (AXP) System Plumbing Schematic Solution Nozzles Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPlus™ - 97...

  • Page 98: Detergent (Axp™) System Preparation And Use

    Detergent (AXP™) System Preparation And Use Item Description The system should be purged of previous detergent when switching to a Non-Refillable Cartridge Specific Instructions: different detergent. Fill the detergent cartridge with a maximum of 1.25 gallons (4.73 Liters) of Service Note: Move machine over floor drain before purging because a small detergent.

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