Tennant M20 Operator's Manual
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Tennant M20 Operator's Manual

Scrubber-sweeper
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M20
(Gas/LPG)
Scrubber- -Sweeper
Operator Manual
The Safe Scrubbing Alternative
R
Hygenic Fully Cleanable Tanks
R
FloorSmart
Integrated Cleaning System
t
R
ES Extended Scrub System
North America / International
331380
Rev. 06 (5-2009)
*331380*
www.tennantco.com

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Summary of Contents for Tennant M20

  • Page 1 (Gas/LPG) Scrubber- -Sweeper Operator Manual The Safe Scrubbing Alternative Hygenic Fully Cleanable Tanks FloorSmart Integrated Cleaning System ES Extended Scrub System North America / International 331380 Rev. 06 (5-2009) *331380* www.tennantco.com...
  • Page 2 Thermo- -Sentry, Touch- -N- -Go, 1- -STEP, Clean- -Wedge, Variable Drain Valve, EasyOpen, Grip- -n- -Go, MaxPro, Dura- -Track, SmartRelease, InstantAccess, Duramer, FaST- -PAK, ErgoSpace and Lower Total Cost of Ownership are US registered and unregistered trademarks of Tennant Company.

  • Page 3: Table Of Contents

    ......RELAY PANEL FUSES AND RELAYS ENGINE HARNESS FUSES AND RELAYS ....M20 331380 (5- -09)
  • Page 4 ....STORAGE INFORMATION ... . . FREEZE PROTECTION ....M20 331380 (4- -08)

  • Page 5: Safety Precautions

    - - Report machine damage or faulty CAUTION: LPG engine will run for a operation immediately. few seconds after key is turned off. - - Follow mixing and handling Apply parking brake before leaving instructions on chemical containers. machine. M20 331380 (4- -08)
  • Page 6 Keep area well ventilated. - - Use cardboard to locate leaking hydraulic fluid under pressure. - - Use Tennant supplied or approved replacement parts. 7. When loading/unloading machine onto/off truck or trailer: - - Turn off machine.
  • Page 7 Located on the side of the operator compartment. LPG ENGINE LABEL - - Located HOPPER LIFT ARMS LABEL - - next to the ignition switch on the Located on both hopper lift arms. instrument panel. (LPG machines only) M20 331380 (9- -06)
  • Page 8 HOT SURFACE LABEL - - Located on RAISED HOPPER LABEL - - Located on the side of the bumper, on the both hopper lift arms. exhaust shield, and on the hydraulic reservoir. M20 331380 (3- -07)

  • Page 9: Operation

    I. FaST carton or ES detergent tank U. Vacuum wand (option) compartment (option) V. Hopper safety pin J. Solution tank cover W. Engine cover K. Operator seat X. Fuel tank L. Spray wand - - nozzle behind seat (option) M20 331380 (6- -06)

  • Page 10: Controls And Instruments

    F. Brake pedal G. Parking brake pedal H. Hopper door open / close switch I. Hopper raise / lower switch J. Touch panel K. Operating / Hazard Lights switch L. Spray nozzle switch (option) M. Engine indicator lights M20 331380 (6- -06)

  • Page 11: Touch Panel

    I. Solution decrease button (- -) J. Brush pressure increase button (+) K. Brush pressure decrease button (- -) L. Filter shaker button M. Sweep vacuum fan button N. Side brush button (option) O. Engine speed button P. Supervisor control buttons M20 331380 (6- -06)

  • Page 12: Symbol Definitions

    Engine oil pressure (000000--002885) Filter shaker Engine oil pressure (002886-- Sweep vac fan Check engine Scrub vac fan/squeegee Parking Brake (002886-- 1--STEP sweep Horn 1--STEP scrub Jack point ES (extended scrub) Unleaded fuel only FaST (foam scrubbing) M20 331380 (5- -09)

  • Page 13: Operation Of Controls

    CHARGING SYSTEM INDICATOR The Charging system indicator comes on when If this indicator comes on, contact a Tennant the alternator is not operating within the normal service representative. range. If this indicator comes on, stop the machine immediately and correct the problem.

  • Page 14: Setting The Engine Speed

    The light next to the button will turn off. The machine will default to the last setting used when it is powered on or off. M20 331380 (6- -06)

  • Page 15: Hour Meter

    The Supervisor Control buttons are for accessing the configuration and diagnostic modes. Only Press the bottom of the Operating / hazard light properly trained service personnel and TENNANT switch to turn on the hazard light, headlights, and representatives should access these modes.

  • Page 16: Operator Seat

    2. Release the Steering column tilt handle. Increase firmness: Turn the weight adjustment knob clockwise. Decrease firmness: Turn the weight adjustment knob counterclockwise. Use the gauge next to the weight adjustment knob to help determine seat firmness for the operator. M20 331380 (6- -06)

  • Page 17: Brake Pedal

    SQUEEGEE PROTECTORS (OPTION) The rear and side squeegee protectors help protect the rear squeegee from being damaged. To engage the rear squeegee protector, pull the pin, lower the protector bar, and reinsert the pin. M20 331380 (6- -06)

  • Page 18: How The Machine Works

    The 1- -STEP Sweep button operates all the dry important role in determining the type of brushes sweeping functions (without scrubbing). The to use. Contact a Tennant representative for 1- -STEP Scrub button operates all the scrubbing specific recommendations. functions. (The machine also sweeps while PolyPro brush -- Heavy duty polypropylene scrubbing).

  • Page 19: While Operating The Machine

    FOR SAFETY: When using machine, go slow on inclines and slippery surfaces. The maximum rated incline for scrubbing with the machine is 8_ or 14%. The maximum rated incline during transport of the machine is 10_ or 18%. M20 331380 (6- -06)

  • Page 20: Pre--Operation Checklist

    - Check the condition of the hopper dust filter and seals. - Clean the hopper and the debris screen. - Check the squeegee hose for debris or blockage. - Check the squeegees for damage, wear, and deflection adjustment. M20 331380 (6- -06)

  • Page 21: Changing The Lpg Tank

    9. Slowly open the tank service valve and check for leaks. If a leak is found, immediately close the service valve and inform the appropriate personnel. M20 331380 (6- -06)

  • Page 22: Starting The Machine

    3. Turn the ignition switch key until the engine ignition switch is turned off. starts. FOR SAFETY: Before leaving or servicing machine, stop on level surface, set parking brake, and turn off machine. M20 331380 (6- -06)

  • Page 23: Filling The Solution Tank

    TENNANT are conventional cleaning detergents in the representative. solution tank. Drain, rinse, and refill the solution tank with clear cool water before operating the FaST system. Conventional cleaning detergents may cause a FaST system failure. M20 331380 (6- -06)

  • Page 24: Es (Extended Scrub) Mode With Auto--Fill

    Do not use ATTENTION: For ES Scrubbing, only use flammable materials in tank(s). recommended low- -foaming cleaning detergents. Machine damage due to the use of improper detergent will void the manufacturer’s warranty. M20 331380 (6- -06)

  • Page 25: Setting Scrub Modes

    The machine will default to the last setting used when it is powered on or off. NOTE: When the ES system is turned on there is a slight delay before the ES pump begins operating. M20 331380 (6- -06)

  • Page 26: Setting Solution Flow

    The middle setting (two lights) allows solution AND detergent flow. The lowest setting (one light) allows solution flow WITHOUT adding detergent. Detergent does not have to be continuously added with the solution flow to attain effective scrubbing results. M20 331380 (6- -06)

  • Page 27: Scrubbing

    Do not pick up. FOR SAFETY: When using machine, go slow on inclines and slippery surfaces. NOTE: The squeegee automatically rises when the machine is driven backwards. This prevents damaging the squeegee. M20 331380 (6- -06)

  • Page 28: Double Scrubbing

    FOR SAFETY: When using machine, go slow on inclines and slippery surfaces. Let the cleaning solution soak on the floor for 5--15 minutes. Then place the side squeegee into the lower position and lock into place with the pin. M20 331380 (6- -06)

  • Page 29: Water Pickup Mode (No Scrubbing)

    Do not pick up. Press the Scrub vacuum fan/squeegee button. The light above the button will come on, the squeegee will lower, and the vacuum fan will start operating. Pick up the water or non--flammable liquid spill. M20 331380 (6- -06)

  • Page 30: Sweeping

    1- -STEP Sweep button is turned off. 6. Empty the debris hopper at the end of each shift or as needed. See EMPTYING THE HOPPER section of this manual M20 331380 (6- -06)

  • Page 31: Emptying The Hopper

    NOTE: Be aware the minimum ceiling height needed to raise the hopper is 2500 mm (98 in). 4. Slowly back the machine up to the debris container. FOR SAFETY: When using machine, use care when reversing machine. M20 331380 (6- -06)

  • Page 32: Engaging Hopper Support Pin

    Hopper raise/lower switch 3. Set the parking brake. until the hopper is completely lowered. 4. Remove the hopper support pin from the storage tube. WARNING: Lift arm pinch point. Stay clear of hopper lift arms. M20 331380 (3- -07)

  • Page 33: Removing The Hopper Dust Filter

    CLEANING THE HOPPER DUST FILTER section of this manual. 8. Place the cleaned or new dust filter into the hopper. Position the filter screen side up as shown below. 4. Unhook the handles from the filter cover. M20 331380 (6- -06)

  • Page 34: Cleaning The Hopper And Debris Screen

    See ENGAGING HOPPER SUPPORT PIN section of this manual. WARNING: Raised hopper may fall. Engage hopper support pin. WARNING: Lift arm pinch point. Stay clear of hopper lift arms. 3. Turn off the machine. M20 331380 (6- -06)
  • Page 35 11. Disengage the hopper support pin and lower the hopper. See the DISENGAGING HOPPER SUPPORT PIN section of this manual. 7. Turn off the machine. 8. Flush dirt and debris from the debris hose and debris screen and out into the hopper. M20 331380 (4- -08)

  • Page 36: Draining And Cleaning The Recovery Tank

    2. Place the recovery tank drain hose nozzle next to a floor drain. NOTE: DO NOT use steam to clean tanks. Excessive heat can damage tanks and components. 5. Remove the vacuum screen from the recovery tank and rinse the screen. M20 331380 (6- -06)

  • Page 37: Draining The Recovery Tank With The Drain Plug

    Allow the recovery tank to drain. pin in the lowest position. WARNING: Raised hopper may fall. Engage hopper support pin. WARNING: Lift arm pinch point. Stay clear of hopper lift arms. M20 331380 (8- -07)
  • Page 38 NOTE: If necessary, turn the handle clockwise for a tighter fit and counterclockwise for a looser fit. 5. Remove the recovery tank drain hose from the back of the recovery tank, then rinse the dirt and debris from the hose into the tank. M20 331380 (3- -07)

  • Page 39: Draining And Cleaning The Solution Tank

    10. Remove the hopper support pin and insert it into the storage tube. Then lower the hopper. 11. Close the recovery tank cover. 2. Place the solution tank drain hose nozzle next to a floor drain. M20 331380 (3- -07)
  • Page 40 7. Reinstall the solution tank drain hose onto the toward the solution tank drain. back of the recovery tank. 8. Close the solution tank cover(s). 5. Rinse the float sensor and the screen filter. Allow the solution tank to drain. M20 331380 (6- -06)

  • Page 41: Fault Indicator(S)

    Connect vacuum hose to (Optional) connected squeegee assembly. F12: Seat Sw Open Operator not in the seat Engine will shut off Engage parking brake (Optional) while engine is running and before leaving the machine. parking brake not engaged M20 331380 (5- -09)

  • Page 42: Conditions / Warnings

    C5: No ES/FaST ES and FaST systems unavailable Only machines equipped with ES or FaST system can be operated in these modes. C6: No Side Sweep Side sweep unavailable Side sweep not allowed to operate by itself. M20 331380 (6- -06)

  • Page 43: Options

    5. Twist the off/on knob to turn on the wand. 6. When finished cleaning, place the spray nozzle and wand back into their storage locations. 7. Press the bottom of the Spray nozzle switch to turn off the water supply. M20 331380 (6- -06)

  • Page 44: Vacuum Wand (Option)

    Consult with your 10. Disassemble the vacuum wand assembly and regulatory authorities for exposure return it to the storage bag. limits. Keep engine properly tuned. 11. Reattach the vacuum hose to the hopper lift arm. M20 331380 (4- -08)

  • Page 45: Machine Troubleshooting

    Main brushes not properly adjusted Adjust brushes Debris caught in main brush drive Remove debris from main brush mechanism drive mechanism Main and/or side brush drive failure Call Tennant service representative Hopper is full Empty hopper Hopper lip skirts worn or damaged Replace lip skirts...
  • Page 46 Shut off machine. Extinguish fire. If necessary, call emergency personnel. Recovery tank full Press the Scrub vacuum fan/squeegee button for one minute of extended water pickup. Empty recovery tank. ES models: activate the ES system to prevent this. M20 331380 (6- -06)

  • Page 47: Maintenance

    MAINTENANCE MAINTENANCE M20 331380 (3- -07)

  • Page 48: Maintenance Chart

    Drain oil from electronic pressure regulator (EPR) (machines serial number 002000 and above) 100 Hours 13, 20 Tires Check for damage Rear squeegee casters Lubricate Rear squeegee Check leveling Scrub head skirt Check for damage or wear M20 331380 (3- -07)
  • Page 49 . . . Water and ethylene glycol anti-freeze, --34_ C (--30_ F) . . . Special lubricant, Lubriplate EMB grease (Tennant part number 01433--1) NOTE: More frequent maintenance intervals may be required in extremely dusty conditions. M20 331380 (10- -08)

  • Page 50: Lubrication

    The engine oil capacity is is located next to the front wheel support. 3.5 L (3.7 qt) with oil filter. SQUEEGEE CASTER BEARINGS Lubricate the squeegee caster bearings after every 100 hours of operation. M20 331380 (6- -06)

  • Page 51: Hopper Lift Arm Pivots

    The torque tube grease fittings on the operator side of the machine are located beneath the fuel tank. On the other side of the machine the torque tube grease fittings are located beneath the propel pump. M20 331380 (6- -06)

  • Page 52: Hydraulics

    ATTENTION! Do not overfill the hydraulic fluid Tennant hydraulic fluid is specially selected to reservoir or operate the machine with a low meet the needs of Tennant machines. There are two fluids available for different temperature level of hydraulic fluid in the reservoir.

  • Page 53: Hydraulic Hoses

    Serious infection or reaction can occur if proper medical treatment is not given immediately. Contact a mechanic or supervisor if a leak is discovered. Flush the radiator and the cooling system after every 800 hours of operation. M20 331380 (10- -08)

  • Page 54: Air Filter

    AIR FILTER Replace the air filter after every 400 hours of operation. Check the radiator hoses and clamps after every 200 hours of operation. Tighten loose clamps. Replace damaged hoses and clamps. M20 331380 (6- -06)

  • Page 55: Fuel Filter (Lpg)

    Replace the gasoline fuel filter after every 400 hours of operation. FOR SAFETY: When servicing machine, keep flames and sparks away from fuel system service area. Keep area well ventilated. Location of fuel filter on machines serial number 001999 and below. M20 331380 (10- -08)

  • Page 56: Engine Belt

    4 to 5 kg (8 to 10 lb) applied at the Check the timing belt after every 800 hours of mid-point of the longest span. operation. Replace the timing belt after every 2000 hours of operation. WARNING: Moving belt and fan. Keep away. M20 331380 (3- -07)

  • Page 57: Battery

    Refer to the diagram below for locations of the fuses and relays on the relay panel. The M10 relay for the optional spray nozzle is located behind the battery. M20 331380 (3- -07)

  • Page 58: Engine Harness Fuses And Relays

    Reverse 12 VDC, 40 A Horn 12 VDC, 40 A Shutdown 12 VDC, 40 A Starter 12 VDC, 40 A Not Used 12 VDC, 40 A Not Used 12 VDC. 40 A Spray Wand (Separate Relay) M20 331380 (3- -07)

  • Page 59: Cleaning The Hopper Dust Filter

    If there is a fire in the hopper, the Thermo--Sentry stops the vacuum fan and cuts off the air flow. The Thermo--Sentry automatically resets after cooling down. M20 331380 (5- -09)
  • Page 60 5. Pull the brushes out from the scrub head. 8. Reinstall the brush idler plates. 9. Close the inner and outer brush doors. 10. Check and adjust the brush pattern if needed. Refer to CHECKING THE MAIN BRUSH PATTERN. M20 331380 (9- -06)

  • Page 61: Checking The Main Brush Pattern

    6. Observe the brush patterns. If the brush pattern is the same width across the entire length of each brush and both brushes are the same width, no adjustment is necessary. 10653 10355 M20 331380 (6- -06)

  • Page 62: Adjusting The Main Brush Taper

    3. Tighten the mounting bolts. 4. Recheck the pattern. Readjust if necessary. 2. Recheck the pattern. Readjust if necessary. M20 331380 (6- -06)

  • Page 63: Side Brush (Option)

    4. Remove the side brush from underneath the side brush assembly. 5. Place the new side brush underneath the side brush assembly and lift the side brush up onto the side brush hub until the brush locks onto the hub. M20 331380 (5- -09)

  • Page 64: Fast System

    6. Connect the FaST supply hose to the carton out from the compartment and discard. FaST--PAK hose connector. 7. Scrub with the FaST system for a few minutes to allow the detergent to reach maximum foaming. M20 331380 (6- -06)

  • Page 65: Cleaning The Fast Supply Hose Connector

    Replace the FaST system filters after every 1000 hours of operation. Empty the solution tank before Remove the filter screen bowl and clean the filter replacing the filters. screen after every 50 hours of operation. Empty the solution tank before removing the filter. M20 331380 (6- -06)

  • Page 66: Squeegee Blades

    7. Remove the rear squeegee. 3. Remove both mounting knobs from the rear squeegee assembly. 4. Turn on the machine, raise the scrub head, and turn off the machine. 5. Remove the rear squeegee assembly from the machine. M20 331380 (6- -06)
  • Page 67 13. Install the new front squeegee blade or rotate the existing blade to the new edge. Be sure the holes in the squeegee blade are hooked 10. Tighten the rear retaining band tension latch. onto the tabs. M20 331380 (6- -06)

  • Page 68: Replacing Or Rotating The Side Squeegee Blades

    17. Check and adjust the rear squeegee if necessary. Refer to ADJUSTING THE REAR SQUEEGEE BLADE DEFLECTION and LEVELING THE REAR SQUEEGEE sections of this manual. 4. Remove the retaining band from the side squeegee assembly. M20 331380 (6- -06)

  • Page 69: Replacing The Side Brush Squeegee Blade (Option)

    2. Pull the pin from the squeegee bumper and open the squeegee bumper. 7. Reattach the side squeegee retaining band to the side squeegee assembly. M20 331380 (6- -06)

  • Page 70: Leveling The Rear Squeegee

    5. Drive the machine forward with the squeegee down to recheck the squeegee blade deflection if adjustments were made. 6. Readjust the squeegee blade deflection if necessary. M20 331380 (6- -06)

  • Page 71: Adjusting The Rear Squeegee Blade Deflection

    12 mm (0.50 in) for scrubbing adjustments are made. smooth floors and 15 mm (0.62 in) for rough floors. 5. Readjust the squeegee blade deflection if necessary. 12 mm (0.50 in) M20 331380 (6- -06)

  • Page 72: Skirts And Seals

    The skirts should be between 0 to 6 mm (0 to 0.25 in) from the floor when the scrub head is down. RECOVERY TANK SEAL Check the recovery tank cover seal for damage and wear daily. M20 331380 (6- -06)

  • Page 73: Brakes And Tires

    FRONT WHEEL Torque the front wheel nuts twice in the pattern shown to 122 to 149 Nm (90 to 110 ft lb) after the first 50 hours of operation, and after every 800 hours there after. M20 331380 (6- -06)

  • Page 74: Pushing, Towing, And Transporting The Machine

    AND is 380 mm (15 in) or less from the ground. 4. To winch the machine onto the truck or trailer, attach the winching chains to the holes in the rear jacking brackets behind the rear tires. M20 331380 (6- -06)
  • Page 75 FOR SAFETY: When unloading machine off truck or trailer, use winch. Do not drive the machine off the truck or trailer unless the loading surface is horizontal AND 380 mm (15 in) or less from the ground. M20 331380 (6- -06)

  • Page 76: Machine Jacking

    ES or the FaST system in freezing the machine. Jack machine up at designated temperatures requires special procedures. locations only. Support machine with jack Consult a TENNANT representative for more stands. information. M20 331380 (8- -07)

  • Page 77: Specifications

    HYDRAULIC SYSTEM System Capacity Fluid Type Hydraulic reservoir 38 L (10 gal) TENNANT part no. 65869 -- above 7_ C (45_ F) Hydraulic total 45 L (12 gal) TENNANT part no. 65870 -- below 7_ C (45_ F) STEERING Type...

  • Page 78: Power Type

    Parking brake Utilize service brakes, cable actuated TIRES Location Type Size Front (1) Solid 140 mm x 460 mm (5.5 in x 18 in) Rear (2) Solid 90 mm x 410 mm (3.5 in x 16 in) M20 331380 (8- -04)

  • Page 79: Fast System

    High concentrate flow rate 5.2 CC/Minute (0.17 Liquid Ounces/Minute) Detergent pump (S/N 000000--002532) 12 Volt DC Air pump (S/N 000000--002532) 12 Volt DC, 0.6 Maximum Amp draw Air pump flow rate (S/N 000000--002532) 8.7 LPM (0.3 CFM) open flow M20 331380 (8- -04)

  • Page 80: Machine Dimensions

    SPECIFICATIONS MACHINE DIMENSIONS Rear Squeegee 1300 mm (51 in) 1470 mm (58 in) Frame 2410 mm (roller to roller) (95 in) 1270 mm (50 in) Width (with side brush) 1470 mm (58 in) 1014751 M20 331380 (6- -06)

  • Page 81: Index

    Solution increase button (+), 24 Supervisor Control Buttons, 13 Electronic Pressure Regulator, 53 Sweep vacuum fan button, 28 Emptying the Hopper, 29 Buttons, Controls and Instruments, 9, 12 Engaging Hopper Support Pin, 30 Bypass valve, 72 M20 331380 (4- -08)
  • Page 82 Fuses and Relays, 55 Hopper Lift Arm Pivots, 49 Engine Harness Fuses and Relays, 56 Lift Arm Latch, 49 Relay Panel Fuses and Relays, 55 Squeegee Caster Bearings, 48 Steering Cylinder Bearing, 48 Torque Tubes, 49 M20 331380 (4- -08)
  • Page 83 Setting Brush Pressure, 23 Propelling Motor, 71 Setting Conventional Solution Flow, 24 Torque Shaft Nut, 71 Setting ES (Extended Scrub) Mode, 23 Pushing or Towing the Machine, 72 Setting ES Solution Flow, 24 Setting FaST Mode, 23 M20 331380 (4- -08)
  • Page 84 Replacing or Rotating the Side Squeegee Blades, 66 Squeegee Caster Bearings, 48 Squeegee Protectors (Option), 15 Starting the Machine, 20 Steering, Specifications, 75 Steering Cylinder Bearing, 48 Storage Information, 74 Freeze Protection, 74 Storing the Machine, 74 M20 331380 (4- -08)

Table of Contents