Nilfisk-Advance Nilisk-Alto 866 Service Manual
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Nilfisk-Advance Nilisk-Alto 866 Service Manual

Nilfisk-Advance Nilisk-Alto 866 Service Manual

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Cla rke Foc us I I M idsize
Nilisk-Alto SCRUBTEC 8/BOOST 8
Service Manual
Cla rke M ode ls: Disc 26 05390A, Disc 26 05390C, Disc 28 05400A, Disc 28 05400C, Disc 34
05410A, Disc 34 05410C, Cylindrical 28 05420A, Cylindrical 28 05420C, Boost 28 05370A, Boost 28
05370C, Boost 32 05380A, Boost 32 05380C
Nilisk Alto Models:
Scrubtec 866, 871, 871C, 886, BOOST 8
10/10 Revised 08/14 Form Number 56043117

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Summary of Contents for Nilfisk-Advance Nilisk-Alto 866

  • Page 1 Cla rke Foc us I I M idsize Nilisk-Alto SCRUBTEC 8/BOOST 8 Service Manual Cla rke M ode ls: Disc 26 05390A, Disc 26 05390C, Disc 28 05400A, Disc 28 05400C, Disc 34 05410A, Disc 34 05410C, Cylindrical 28 05420A, Cylindrical 28 05420C, Boost 28 05370A, Boost 28 05370C, Boost 32 05380A, Boost 32 05380C Nilisk Alto Models: Scrubtec 866, 871, 871C, 886, BOOST 8...

  • Page 2: Table Of Contents

    Contents GEN ERAL I N FORM AT I ON .................. 4 SERVICE MANUAL PURPOSE ..................4 REVISION HISTORY ......................4 OTHER REFERENCE MANUALS ..................4 CONVENTIONS ........................4 SAFETY ..........................4 MACHINE LIFTING ......................5 MACHINE TRANSPORTATION ..................5 GENERAL INSTRUCTIONS ....................5 GENERAL MACHINE DESCRIPTION ................
  • Page 3 SPECIAL TOOLS ......................50 SCRU B SYST EM , CY LI N DRI CAL ..............5 1 FUNCTIONAL DESCRIPTION ..................51 COMPONENT LOCATIONS ..................... 53 TROUBLESHOOTING ...................... 54 REMOVAL AND INSTALLATION ..................54 SPECIFICATIONS ......................56 SCRU B SYST EM , DI SC ..................5 7 FUNCTIONAL DESCRIPTION ..................

  • Page 4: General Information

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec GENERAL INFORMATION SERVICE MANUAL PURPOSE This Service Manual is a resource for professional service technicians. It provides informaion for understanding how the machine operates, where components are located, basic troubleshooing, maintenance and mechanical service operaions.

  • Page 5: Machine Lifting

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec MACHINE LIFTING WARNING! Do not work under the lited machine without supporing it with safety stands. MACHINE TRANSPORTATION WARNING! Before transporing the machine, make sure that: • All covers are closed. • The igniion key is removed. • The machine is securely fastened to the means of transport.
  • Page 6 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec • Do not leave the machine unatended without being sure that it cannot move independently. • Always protect the machine against the sun, rain and bad weather, both under operaion and inacivity condiion.

  • Page 7: General Machine Description

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec • In case of machine malfuncions ensure that these are not caused by a lack of maintenance. Otherwise, request assistance from the authorized personnel or from an authorized Service Center. • Use brushes and pads supplied with the machine and those speciied in the Operator’s Manual. Using other brushes or pads could reduce safety.

  • Page 8: Know Your Machine

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec KNOW YOUR MACHINE MACHINE CONTROL PANEL Figure 1 – Machine Control Panel Key Switch (See Figure 1, Item “A”) The key switch turns “ON” the power to the control panel. “O” is “OFF” and “I” is “ON”.
  • Page 9 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec lower the brushes by pressing the one touch control buton (Item “C”). This will lower the brushes to the normal scrub posiion. To increase brush pressure, press the buton (Item “D”). The LED above the buton will illuminate yellow. Press the buton (Item “D”) again and the brushes will return to normal scrub (yellow LED will turn “OFF”).

  • Page 10: Indicator Lights

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec INDICATOR LIGHTS Explanaion Indicator Light • On steady when operator has requested one touch scrub. • Flashes when brush head actuator is moving. • Does not come on at iniial key on. • On steady when operator has requested extra scrub pressure .

  • Page 11: Machine Specifications

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec MACHINE SPECIFICATIONS Model DISC 26 Disc 28 Disc 34 (2) 13” (33 cm) (2) 14” (36 cm) (2) 17” (43 cm) Pad / Brush Size (2) 3/4 hp (.56 kw) (2) 3/4 hp (.56 kw) (2) 3/4 hp (.56 kw) Brush Motor (s) 200 RPM...
  • Page 12 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec Model DISC 26 Disc 28 Disc 34 Soluion Fill Rear Fill with Bucket or Hose Soluion Flow 0 - 1 gal/min (0 - 3.8 liters/min) 23 gallons (87 liters) Recovery Tank Motor Tracion .44 hp (.33 kw) 0 - 260 t/min (0 - 4.8 km/h) Speed Forward...
  • Page 13 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec Model Cylindrical 28 BOOST 28 BOOST 32 (2) 5.75” x 28” (14.6 x 14” x 28” (35.6 x 71cm) 14” x 32” (35.6 x 81cm) Pad / Brush Size 69cm) (2) .81 hp (.6 kw) 3/4 hp (.56 kw) 3/4 hp (.56 kw) Brush Motor (s)
  • Page 14 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec Model Cylindrical 28 BOOST 28 BOOST 32 Soluion Flow 0 - 1 gal/min (0 - 3.8 Normal BOOST Scrubbing .12 gal/min (.45 liters/ liters/min) min), Full range .0 - .65 gal/min (0 -2.5 liters/min) 23 gallons (87 liters) Recovery Tank Motor Tracion...

  • Page 15: Machine Maintenance

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec MACHINE MAINTENANCE EVERY 6 MONTHS 1. Check the carbon brushes in the electric motors. a. Scrub motors for all disc and boost models (not cylindrical). b. Transaxle motor. 2. Clean the batery terminals and connectors. Make sure all of the batery connecions are ightened correctly. 3.

  • Page 16: Assi S Syst

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 CHASSIS SYSTEM FUNCTIONAL DESCRIPTION The chassis is made up of heavy gauge steel and supports the drive transaxle, caster wheel, brush deck, squeegee assembly and machine body. Form Number 5043117 Page 16...

  • Page 17: Con T Rol Syst

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 CONTROL SYSTEM FUNCTIONAL DESCRIPTION There are two controllers on the Clarke Focus II midsize scrubber. The main machine controller operates the scrub and vacuum funcions. It is located directly behind the operator control panel. It is responsible for raising and lowering the deck, turning the scrub funcion and the vacuum funcion on and of based on operator requests and other inputs.
  • Page 18 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Descripion Pin ID 24Vdc (B+) at all imes. J1-1 J1-2 Not Used 24Vdc with Key Switch “ON”. J1-3 Note: Output from Control Panel to turn “ON” IDrive Relay. 17Vdc with Key Switch “ON” and Brush Head lowered to the loor J1-4 then 0Vdc when the Traverse is engaged Forward or Reverse Direcion.
  • Page 19 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Descripion Pin ID J2-3 Not Used J2-4 Not Used J3 Connector – 16 Pin Descripion Pin ID 24Vdc with Key Switch “ON” and Brush Head lowered to the loor J3-1 and when the Traverse is engaged Forward or Reverse Direcion. Note: (+) Output from Control Panel to turn “ON”...
  • Page 20 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Descripion Pin ID 24Vdc with Key Switch “ON” and the Brush Head Actuator is being lowered to the J3-11 loor or 0Vdc in the opposite direcion. 0Vdc with Key Switch “ON” and the Brush Head Actuator is being lowered to the J3-12 loor or 24Vdc in the opposite direcion.

  • Page 21: Removal And Installation

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 REMOVAL AND INSTALLATION MAIN MACHINE CONTROLLER 1. Turn of key, remove control panel mouning screws and pull control panel toward you. 2. Disconnect the 3 white electrical connectors, the 2 green ground wires on the key switch and the wiring for the hour meter (If equipped) and remove the control panel.
  • Page 22 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 3. Separate the main machine control board from the control panel by removing the 4 white plasic screws. 4. Do not lose the plasic ilm between the control board and the panel. 5.

  • Page 23: Elect Ri Cal Syst

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 ELECTRICAL SYSTEM FUNCTIONAL DESCRIPTION The Clarke Focus II Midsize scrubber is batery powered. It contains 4 6 volt bateries for a total of 24volts. Heavy cables connect the bateries in series. A large red 120 amp two way “Anderson” connector is used as a Main Power Plug to connect the bateries to the machine wiring and batery charger.
  • Page 24 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Delta-Q IC650 Battery Charging Profiles Table Proile to use Battery Manufacturer Voltage Battery Model # 20 Hour Rating N-A P/N DISCOVER EV250A-AGM 40953A P-0-4-3 DISCOVER EV305A-A 56112546 P-0-4-3 DISCOVER EV305A-A 56315959 P-0-4-3 DISCOVER EV305A-AGM...

  • Page 25: Component Locations

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 COMPONENT LOCATIONS • Bateries • Main Power Plug • Batery Charger • Electrical Panel • Fuses Form Number 5043117 Page 25...
  • Page 26 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Form Number 5043117 Page 26...

  • Page 27: Maintenance And Adjustments

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 MAINTENANCE AND ADJUSTMENTS BATTERY MAINTENANCE AND RECHARGING See Operator’s Manual. CHECKING BATTERY TYPE SETTING The batery type seing is stored in the main machine controller and is used to establish the correct low voltage cutout threshold and for storing the correct charging proile to be used by the S.P.E batery charger.
  • Page 28 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Within 3 seconds toggle the button shown below to advance the green bar LED to the desired setting. Green bar seing • 1st green bar - WET @ 25 amps, 250 & 330 ah bateries (4 RED blinks). • 2nd green bar - GEL/AGM @ 25 amps, 260 &...
  • Page 29 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Wait for the batery indicator LED to lash out conirmaion of the new seing, then turn the key switch of. Form Number 5043117 Page 29...

  • Page 30: Troubleshooting

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 TROUBLESHOOTING INSUFFICIENT MACHINE OPERATION TIME Possible Causes: • Bateries not fully charged o If there is any quesion whether the bateries are fully charged, they should be charged for at least 16 hours.
  • Page 31 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 When Servicing Bateries • Remove all jewelry • Do not smoke • Wear safety glasses, rubber gloves and a rubber apron • Work in a well-venilated area • Do not allow tools to touch more than one batery terminal at a ime • ALWAYS disconnect the negaive (ground) cable irst when replacing bateries to prevent sparks.
  • Page 32 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 BATTERY CHARGER The batery charger is mounted to the botom of the frame with 4 bolts that are screwed into threaded holes. Photos and procedures are for the S.P.E. charger. Delta-Q charger procedure is similar. 1.
  • Page 33 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 4. Remove 4 batery charger mouning bolts. 5. Remove charger, thread AC power cable through opening. Form Number 5043117 Page 33...
  • Page 34 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 6. Reassemble in reverse order. Tie wiring in same locaions using new ie straps. 7. When installing a new Delta-Q charger, you must select the correct charging proile for the type of bateries installed in the machine.

  • Page 35: Specifications

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 SPECIFICATIONS LOW VOLTAGE CUT-OUT THRESHOLD VOLTAGES INDICATION TRANSITION CONSEQUENCE THRESHOLD (VOLT) GREEN LED: ixed - YELLOW 22 V 22.2 V LED: ixed YELLOW LED: ixed - RED LED: 20.4 V 21.6 V Brushes OFF lashing RED LED: lashing -Safety...

  • Page 36: Wiring Diagram - 05370T-E Rev F Sheet 1 Of 2

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 WIRING DIAGRAM – 05370T-E REV F Sheet 1 of 2 BATTERY, 24 Vdc MOTOR, TRAVERSE HOURMETER REV SWITCH OPTIONAL BRUSH SOLENOID FUSE, 35A RIGHT BRUSHMOTOR YEL BRN SOLENOID, VACUUM RELAY, IDRIVE FUSE, 35A 14 13 12 11 10 9 8 LEFT BRUSHMOTOR...
  • Page 37 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 WIRING DIAGRAM – 05370T-E REV F Sheet 2 of 2 ONBOARDCHARGERNOT CHARGERCONNECTIONS (OPTIONAL) USEDONTHESE MODELS: FOCUS II DISC34 56380659 FOCUS II DISC28 56380658 OPTION1 OPTION2 OPTION3 FOCUS II DISC26 56380657 FOCUS II BOOST 28 56380651 JUMPER MODEL...

  • Page 38: Connection Diagram 05370T-W Rev C

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 CONNECTION DIAGRAM 05370T-W REV C Form Number 5043117 Page 38...

  • Page 39: Opt I On S An D Accessori

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 OPTIONS AND ACCESSORIES POWER WAND An opional power wand provides pressurized spray and vacuum for spot cleaning. It consists of a telescoping wand, vacuum hose, soluion hose, electric pump, switch and some addiional plumbing and wiring. If the machine is equipped with the chemical mixing system there is addiional plumbing to tap into the chemical hose.
  • Page 40 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Plumbing – Power Wand with EcoFlex Plumbing – Power Wand Without EcoFlex Form Number 5043117 Page 40...

  • Page 41: Hour Meter

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 HOUR METER An opional hour meter can be mounted to the machine control panel. It tracks the ime that the machine is moving either forward or reverse. PARKING BRAKE KIT The opional parking brake kit has a manually operated lever that presses a plunger against a drive wheel to act as s brake.

  • Page 42: Clarke Battery Maintenance System

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 CLARKE BATTERY MAINTENANCE SYSTEM The Clarke batery maintenance system is a special module that pulses a DC current into the bateries to prolong their life. It is powered by the batery pack. There are no serviceable parts. Form Number 5043117 Page 42...

  • Page 43: Recov Ery Syst

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 RECOVERY SYSTEM FUNCTIONAL DESCRIPTION The job of the recovery system is to remove the dirty water from the loor and store it in the recovery tank. The dirty water is then disposed of. Dirt and water are lited of the loor into the recovery tank by airlow, created by a vacuum motor.

  • Page 44: Component Locations

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 The vacuum solenoid (relay) is turned on when the following inputs are met: Self test is completed • Operator request • One Touch Control Buton has been pressed or Vacuum Motor Buton has been pressed The vacuum solenoid is de-energized when the operator turns of the scrub system following a imed delay.
  • Page 45 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Form Number 5043117 Page 45...
  • Page 46 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Form Number 5043117 Page 46...

  • Page 47: Troubleshooting

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 TROUBLESHOOTING VACUUM MOTOR DOES NOT TURN ON (SCRUB FUNCTION WORKS) Possible Causes: Blown (Open) Fuse • Open Float Switch • Defecive Vacuum Motor • Defecive Vacuum Motor Solenoid (Relay) • Defecive Wiring •...

  • Page 48: Removal And Installation

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 REMOVAL AND INSTALLATION VACUUM MOTOR 1. Turn of key switch, drain recovery tank and lit recovery tank up. 2. Cut ie straps securing wiring and connector. 3. Disconnect vacuum motor electrical connecion. 4.
  • Page 49 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 5. Remove vacuum motor and foam pieces. 6. Reassemble in reverse order taking care to posiion all foam pieces correctly and secure wiring with new ie straps. Route vacuum motor wiring lead in slot of vacuum motor cover. Form Number 5043117 Page 49...

  • Page 50: Specifications

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 SPECIFICATIONS VACUUM WATER LIFT: Blocked of - measured at squeegee hose end 55 “ H20 • With 1 inch hole measured approx 10” H2O • VACUUM MOTOR AMP DRAW With everything assembled and squeegee of the loor - 21 Amps VACUUM FAN AIR FLOW MOVEMENT Maximum Flow –...

  • Page 51: Scrub System, Cylindrical

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 SCRUB SYSTEM, CYLINDRICAL FUNCTIONAL DESCRIPTION The disc scrub system moves the scrub head up and down and turns the scrub motors on and of at the operator’s request to provide loor scrubbing acion. The brushes spin toward the center at the botom of each brush. The head is moved up and down by an electric actuator motor that has integrated posiion switches.
  • Page 52 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Form Number 5043117 Page 52...

  • Page 53: Component Locations

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 COMPONENT LOCATIONS Brush Drive Belts • • Brush Head Actuator Brush Solenoid • • Main Machine Controller Belt Belt Form Number 5043117 Page 53...

  • Page 54: Troubleshooting

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 TROUBLESHOOTING SCRUB MOTORS DO NOT TURN ON Possible Causes Brush Solenoid (Contactor) • Open or shorted winding Burned Contacts Wiring • Main Machine Controller – Not energizing the brush solenoid. • Drive Motor Controller –...
  • Page 55 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 BRUSH HEAD ACTUATOR 1. Empty recovery tank. 2. Press the one touch control buton to lower the brush head. a. If the actuator does not move, slightly raise the brush head with a jack to take tension of of the mouning hardware 3.

  • Page 56: Specifications

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 SPECIFICATIONS BRUSH HEAD ACTUATOR AMP DRAW Upward with weight of deck - ~ 2-3 Amps BRUSH CONTACTOR Winding Resistance – 53 ohms GAS SPRING Force – 112 pounds (500 N) Form Number 5043117 Page 56...

  • Page 57: Scru B Syst Em , Di

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 SCRUB SYSTEM, DISC FUNCTIONAL DESCRIPTION The disc scrub system moves the scrub head up and down and turns the scrub motors on at of at the operator’s request to provide loor scrubbing acion. The discs spin toward the center at the front edge of each disc. The head is moved up and down by an electric actuator motor that has integrated posiion switches.
  • Page 58 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Form Number 5043117 Page 58...

  • Page 59: Component Locations

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 COMPONENT LOCATIONS • Gas Spring • Brush Head Actuator • Brush Solenoid • Main Machine Controller Form Number 5043117 Page 59...

  • Page 60: Troubleshooting

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 TROUBLESHOOTING SCRUB MOTORS DO NOT TURN ON Possible Causes • Brush Solenoid (Contactor) Open or shorted winding Burned Contacts • Wiring • Main Machine Controller – Not energizing the brush solenoid. • Drive Motor Controller –...
  • Page 61 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 4. Turn the key on and press the one touch scrub buton to lower the brush head to the loor. Then turn the key of leaving the brush head on the loor. 5.
  • Page 62 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 3. Replace carbon brushes. a. Replace one brush at a ime. b. Push the brush all the way back so that the spring rests on the side of the brush rather than at the end of the brush this will hold the brush in place during assembly 4.
  • Page 63 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 5. Reassemble in reverse order. a. Ater installing the end cover, push each carbon brush inward unil the spring seats against the end of the brush. This can be done by working through the slots in the frame. SCRUB MOTOR CARBON BRUSHES –...
  • Page 64 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 3. Loosen the fan set screw and remove the fan. 4. Remove 2 through bolts and pry the end cover of of the motor. 5. Replace carbon brushes. a. Replace one brush at a ime. b.
  • Page 65 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 6. Reassemble in reverse order. a. Ater installing the end cover, push each carbon brush inward unil the spring seats against the end of the brush. Form Number 5043117 Page 65...
  • Page 66 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 BRUSH HEAD ACTUATOR 1. Empty recovery tank. 2. Press the one touch control buton to lower the brush head. a. If the actuator does not move, slightly raise the brush head with a jack to take tension of of the mouning hardware 3.

  • Page 67: Specifications

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 SPECIFICATIONS SCRUB MOTOR AMP DRAW No Load ~ 4 Amps BRUSH HEAD ACTUATOR AMP DRAW Up with weight of deck up - ~ 2-3 Amps BRUSH CONTACTOR Winding Resistance – 53 ohms GAS SPRING Force –...

  • Page 68: Scrub System, Orbital (Boost)

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 SCRUB SYSTEM, ORBITAL (BOOST) FUNCTIONAL DESCRIPTION The disc scrub system moves the scrub head up and down and turns the scrub motor on at of at the operator’s request to provide loor scrubbing acion. The scrub pad is moved in an orbital moion by the scrub motor similar to an orbital sander.
  • Page 69 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Form Number 5043117 Page 69...

  • Page 70: Component Locations

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 COMPONENT LOCATIONS • Gas Spring • Brush Head Actuator • Brush Solenoid • Main Machine Controller Form Number 5043117 Page 70...

  • Page 71: Troubleshooting

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 TROUBLESHOOTING SCRUB MOTOR DOES NOT TURN ON Possible Causes • Scrub Motor • Brush Solenoid (Contactor) Open or shorted winding Burned Contacts • Wiring • Main Machine Controller – Not energizing the brush solenoid. • Drive Motor Controller –...
  • Page 72 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 4. Disconnect the brush motor electrical connecion. 5. Remove the nuts, bolts and plasic bushing securing the brush head lit brackets to the lit arms. a. Make a note of plasic bushing posiions for reassembly. 6.
  • Page 73 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 3. Remove isolator mouning nuts. 4. Flip head up. 5. Remove 4 screws ataching the lex plates to the driver plate. Form Number 5043117 Page 73...
  • Page 74 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 6. Remove both lex plates. 7. Remove lit brackets from brush head assembly. a. Remove bolt from stud stabilizer on each side. b. Remove rubber mount ataching nuts on each side. 8.
  • Page 75 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 9. Install new rubber mounts in brush head plate by hand. 10. Install lit brackets to brush head. a. Apply Locite 242 to rubber mount stud threads. b. Install and Torque nuts to 8-10 t.-lbs. i.
  • Page 76 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 14. Install one lex plate at a ime to the brush head – make sure you use the star lock washer between the isolator and the brush head plate. a. Tip: start with one of the inner isolators. Install the star washer and direct the isolator through the hole in the drive plate and the stud through the hole in the brush head plate.
  • Page 77 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 SCRUB MOTOR CARBON BRUSHES 1. Remove wire retaining nut and rubber packing. 2. Remove both through bolts. Form Number 5043117 Page 77...
  • Page 78 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 3. Remove end plate. 4. Replace the carbon brushes a. Observe how the springs roll when the brush is pushed back before taking it apart. b. Remove a brush and spring. c.
  • Page 79 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 d. Push brush back against the spring and insert a sif temporary retaining wire (Paper clip) through the access hole in the end cover. (Remove silicone sealer from the holes) The wire must go through the holes in the brush holder just in front of the brush to hold the brush back against the spring pressure.
  • Page 80 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 d. Seal the retaining wire holes in the end cover with silicone sealant. BRUSH HEAD ACTUATOR 1. Empty recovery tank. 2. Press the one touch control buton to lower the brush head. a.
  • Page 81 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 BRUSH HEAD MOTOR The brush head motor is atached with 4 screws from the botom side of the steel plate. 1. Follow steps 1 – 6 in REMOVAL AND INSTALLATION - ISOLATORS AND MOUNTS 2.

  • Page 82: Specifications

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 4. Remove motor mouning screws and remove the motor from the plate. SPECIFICATIONS BRUSH HEAD ACTUATOR AMP DRAW Up with weight of deck up - ~ 2-3 Amps BRUSH CONTACTOR Winding Resistance – 53 ohms GAS SPRING Force –...

  • Page 83: Solu T I On Syst

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 SOLUTION SYSTEM FUNCTIONAL DESCRIPTION The soluion system dispenses the water and cleaning chemicals to the scrub brush head for scrubbing the loor. The soluion tank holds the soluion and serves as the main body of the scrubber. Soluion from the tank lows through a manual shut of valve, ilter, soluion valve (solenoid), manifold and out to the deck.
  • Page 84 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 If the operator has requested low soluion low rate (irst two LED segments), the controller will switch the circuit on for about 1 seconds and of for about 2 seconds. It will then coninue this cycle. For medium soluion low rate (irst 4 LED segments), the circuit will be on for 2 seconds and of for 1.
  • Page 85 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Form Number 5043117 Page 85...

  • Page 86: Component Locations

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Figure 3 - Captured Scope Paterns of Chemical Pump Control. COMPONENT LOCATIONS • Common to all machines Soluion Tank Tank ill opening and cover Shut of valve Soluion ilter Soluion Valve Manifold iing (disk deck) Form Number 5043117 Page 86...
  • Page 87 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Form Number 5043117 Page 87...
  • Page 88 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 • Machines will opional chemical mixing system Chemical Mixing Pump Chemical Mixing Poteniometer Chemical Mixing Module Chemical Mixing Check Valve “Frequency Switch” Form Number 5043117 Page 88...
  • Page 89 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Form Number 5043117 Page 89...

  • Page 90: Maintenance And Adjustments

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 MAINTENANCE AND ADJUSTMENTS SOLUTION FILTER CLEANING 1. Work near a loor drain for convenient clean up if possible 2. Turn key switch of. 3. Close the shut of valve (The valve is closed when the lever is NOT in line with the hose) 4.

  • Page 91: Troubleshooting

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 5. Remove and clean the screen. 6. Reassemble in reverse order. 7. Open the shut of valve. TROUBLESHOOTING INSUFFICIENT SOLUTION FLOW Possible Causes • Restricted Soluion Filter • Debris in soluion tank clogging iing to shut of valve • Pinched hose • Restricted Soluion Valve SOLUTION LEAKS AFTER MACHINE IS SHUT OFF...

  • Page 92: Removal And Installation

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 CHEMICAL IS NOT BEING ADDED TO THE SOLUTION (MACHINES WITH OPTIONAL CHEMICAL MIXING SYSTEM) Possible Causes • Chemical botle empty • Chemical hose blocked or leaking • Check valve stuck closed • Chemical pump • Chemical soap module • Wiring...
  • Page 93 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 5. Remove bateries. 6. Remove brush head actuator support a. Remove two top bolts. b. Remove lower through bolt and nut. Form Number 5043117 Page 93...
  • Page 94 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 7. Remove handle assembly. 8. Disconnect wiring from electrical components on electrical panel. 9. Thread wiring out of soluion tank. 10. Remove squeegee lit cable. 11. Remove soluion tank shut of valve elbow from tank. 12.

  • Page 95: Wh Eel Syst Em , N On -T Ract I

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 WHEEL SYSTEM, NON-TRACTION FUNCTIONAL DESCRIPTION A single caster wheel mounted to the back of the frame allows the machine to pivot easily. The wheel is atached with 4 bolts that are screwed into threaded holes in the frame. COMPONENT LOCATIONS Form Number 5043117 Page 95...

  • Page 96: Wh Eel Syst Em , T Ract I

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 WHEEL SYSTEM, TRACTION FUNCTIONAL DESCRIPTION A permanent magnet motor transaxle is used to propel the machine in both forward and reverse direcions. The speed is variable in both direcions and is adjusted by the Speed Control Poteniometer. The Drive Motor Controller operates the Transaxle Drive Motor by supplying electrical current according to input requests.
  • Page 97 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Figure 4 - Drive Inputs Form Number 5043117 Page 97...
  • Page 98 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 Drive Motor Controller Outputs – The primary job of the Drive Motor Controller is to operate the electric transaxle drive motor. It does this by regulaing current low through the drive motor to control speed and by changing polarity to control direcion.

  • Page 99: Component Locations

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 COMPONENT LOCATIONS Transaxle • Drive Motor Controller • Speed Control Poteniometer • Forward Switches • Reverse Switch • IDrive Relay • Form Number 5043117 Page 99...

  • Page 100: Troubleshooting

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 TROUBLESHOOTING IDRIVE CONTROLLER (24VDC): Note: All voltage measurements should be in reference to the (B-) connecion on the IDrive Controller. 1. Is there a minimum of 24Vdc at the (B+) and (B-) connecions on the IDrive? NO, check the “Traverse 60Amp Fuse”...

  • Page 101: Removal And Installation

    Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 NO, defecive Reverse Buton and / or wiring. YES, Go to Step 7. 7. Is there approximately 17 Vdc at Pin 2 of the 2 Pin connector of the IDrive with the “Brush Head” lowered to the loor and with the traverse not engaged? If not, check the Brush Solenoid, Control Panel and / or wiring.
  • Page 102 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 6. Remove the transaxle to frame mouning bolts on both sides. 7. Disconnect the transaxle motor electrical connector. 8. Remove the transaxle by sliding it out of the frame slots. 9. Reassemble in reverse order. a.
  • Page 103 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 3. Remove Brush and Spring. 4. Install Brush and Spring. 5. Install Brush Cap. Form Number 5043117 Page 103...
  • Page 104 Service Manual: Clarke Focus II Midsize, Nilisk-Alto ScrubTec 8 6. Tighten cap with screwdriver 7. Repeat steps for all 4 carbon brushes. SPECIFICATIONS DRIVE MOTOR Amp Draw Measurements No load (one wheel jacked up), jumped directly to batery- Approximately 2.5 amps •...

This manual is also suitable for:

Nilisk-alto 871Nilisk-alto 871cNilisk-alto 886Nilisk-alto boost 8Clarke disc 26 05390cClarke disc 28 05400a ... Show all

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