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

Scrubber-sweeper
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See also: Service Manual , Operator's Manual
M20
(Diesel)
Scrubber- -Sweeper
Operator Manual
The Safe Scrubbing Alternative
R
Hygenic Fully Cleanable Tanks
R
FloorSmart
Integrated Cleaning System
t
ES Extended Scrub System
R
North America / International
331410
Rev. 06 (5-2009)
*331410*
www.tennantco.com

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  • Page 1 (Diesel) Scrubber- -Sweeper Operator Manual The Safe Scrubbing Alternative Hygenic Fully Cleanable Tanks FloorSmart Integrated Cleaning System ES Extended Scrub System North America / International 331410 Rev. 06 (5-2009) *331410* 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

    ....ADJUSTING THE MAIN BRUSH TAPER ......M20 Diesel 331410 (5- -09)
  • Page 4 INDEX ........M20 Diesel 331410 (5- -09)

  • Page 5: Safety Precautions

    - - Do not carry passengers on machine. NOT touch. - - Always follow safety and traffic rules. - - Report machine damage or faulty operation immediately. - - Follow mixing and handling instructions on chemical containers. M20 Diesel 331410 (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 FOR SAFETY LABEL - - Located on the side of the EMISSIONS LABEL - - Located on the operator compartment. side of the operator compartment. HOPPER LIFT ARMS LABEL - - Located on both hopper lift arms. M20 Diesel 331410 (9- -06)
  • Page 8 RAISED HOPPER LABEL - - Located on both hopper lift arms. HOT SURFACE LABEL - - Located on the side of the bumper, on the exhaust shield, and on the hydraulic reservoir. M20 Diesel 331410 (3- -07)

  • Page 9: Operation

    P. Solution tank drain hose G. Fuel tank Q. Hopper H. Seat shroud R. Rear squeegee I. FaST carton or ES detergent tank S. Hopper safety pin compartment (option) T. Engine cover J. Solution tank cover M20 Diesel 331410 (9- -06)

  • Page 10: Controls And Instruments

    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 Diesel 331410 (9- -06)

  • Page 11: Touch Panel

    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 Diesel 331410 (9- -06)

  • Page 12: Symbol Definitions

    Engine oil pressure (002886-- Sweep vac fan Glow plugs (preheat -- diesel only) Scrub vac fan/squeegee Horn 1--STEP sweep Jack point 1--STEP scrub Diesel fuel only ES (extended scrub) Parking Brake (002886-- FaST (foam scrubbing) Check engine (000000--002885) M20 Diesel 331410 (5- -09)

  • Page 13: Operation Of Controls

    OPERATION If this indicator comes on, contact a Tennant OPERATION OF CONTROLS service representative. CHARGING SYSTEM INDICATOR The Charging system indicator comes on when the alternator is not operating within the normal 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 Diesel 331410 (9- -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 Diesel 331410 (9- -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 Diesel 331410 (9- -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 Diesel 331410 (9- -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 Diesel 331410 (9- -06)

  • Page 21: Starting The Machine

    NOTE: Do not operate the starter motor for more than 10 seconds at a time or after the engine has started. Allow the starter to cool 15- -20 seconds between starting attempts or damage to the starter motor may occur. M20 Diesel 331410 (9- -06)

  • Page 22: 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 Diesel 331410 (9- -06)

  • Page 23: 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 Diesel 331410 (9- -06)

  • Page 24: 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 Diesel 331410 (9- -06)

  • Page 25: 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 Diesel 331410 (9- -06)

  • Page 26: 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 Diesel 331410 (9- -06)

  • Page 27: 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 Diesel 331410 (9- -06)

  • Page 28: 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 Diesel 331410 (9- -06)

  • Page 29: 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 Diesel 331410 (9- -06)

  • Page 30: 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 Diesel 331410 (9- -06)

  • Page 31: 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 Diesel 331410 (3- -07)

  • Page 32: 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 Diesel 331410 (9- -06)

  • Page 33: 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 Diesel 331410 (9- -06)
  • Page 34 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 Diesel 331410 (4- -08)

  • Page 35: 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 Diesel 331410 (9- -06)

  • Page 36: 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 Diesel 331410 (8- -07)
  • Page 37 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 Diesel 331410 (9- -06)

  • Page 38: 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 Diesel 331410 (9- -06)
  • Page 39 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 Diesel 331410 (9- -06)

  • Page 40: 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 Diesel 331410 (5- -09)

  • Page 41: 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 Diesel 331410 (9- -06)

  • Page 42: 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 Diesel 331410 (9- -06)

  • Page 43: 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 Diesel 331410 (4- -08)

  • Page 44: 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 45 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 Diesel 331410 (9- -06)

  • Page 46: Maintenance

    MAINTENANCE MAINTENANCE M20 Diesel 331410 (9- -06)

  • Page 47: Maintenance Chart

    Check coolant level Hydraulic cooler Clean core exterior Engine Change oil and filter 20, 13 Tires Check for damage Rear squeegee casters Lubricate Rear squeegee Check leveling Scrub head skirt Check for damage or wear M20 Diesel 331410 (9- -06)
  • Page 48 . . . 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 Diesel 331410 (10- -08)

  • Page 49: Lubrication

    The engine oil capacity is is located next to the front wheel support. 6 L (6.35 qt) with oil filter. SQUEEGEE CASTER BEARINGS Lubricate the squeegee caster bearings after every 100 hours of operation. M20 Diesel 331410 (10- -08)

  • Page 50: 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 Diesel 331410 (9- -06)

  • Page 51: 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 52: 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 Diesel 331410 (10- -08)

  • Page 53: Air Filter

    200 hours of operation. Tighten loose clamps. Replace damaged hoses and clamps. FOR SAFETY: When servicing machine, wear eye and ear protection when using pressurized air or water. AIR FILTER Replace the air filter after every 400 hours of operation. M20 Diesel 331410 (9- -06)

  • Page 54: Fuel Filter

    Proper belt tension is 13 mm (0.50 in) from a force of 4 to 5 kg (8 to 10 lb) applied at the mid-point of the longest span. WARNING: Moving belt and fan. Keep away. M20 Diesel 331410 (9- -06)

  • Page 55: 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 Diesel 331410 (9- -06)

  • Page 56: Engine Harness Fuses And Relays

    12 VDC, 40 A Shutdown 12 VDC, 40 A Starter 12 VDC, 40 A Starter (Diesel) 12 VDC, 40 A Restart Delay 12 VDC. 40 A Spray Wand (Separate Relay) 12 VDC. 40 A Fuel Pump M20 Diesel 331410 (9- -06)

  • Page 57: 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 Diesel 331410 (5- -09)
  • Page 58 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 AND ADJUSTING THE MAIN BRUSH PATTERN. M20 Diesel 331410 (9- -06)

  • Page 59: 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 Diesel 331410 (9- -06)

  • Page 60: 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 Diesel 331410 (9- -06)

  • Page 61: 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 Diesel 331410 (5- -09)

  • Page 62: 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 Diesel 331410 (9- -06)

  • Page 63: Cleaning The Fast Supply Hose Connector

    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 Diesel 331410 (4- -08)

  • Page 64: 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 Diesel 331410 (9- -06)
  • Page 65 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 Diesel 331410 (9- -06)

  • Page 66: 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 Diesel 331410 (9- -06)

  • Page 67: 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 Diesel 331410 (9- -06)

  • Page 68: 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 Diesel 331410 (9- -06)

  • Page 69: 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 Diesel 331410 (9- -06)

  • Page 70: 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 Diesel 331410 (9- -06)

  • Page 71: 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 Diesel 331410 (9- -06)

  • Page 72: 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 Diesel 331410 (9- -06)
  • Page 73 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 Diesel 331410 (9- -06)

  • Page 74: 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 Diesel 331410 (8- -07)

  • Page 75: 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 76: Power Type

    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 Diesel 331410 (10- -08)

  • Page 77: 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 Diesel 331410 (9- -06)
  • Page 78 SPECIFICATIONS M20 Diesel 331410 (3- -07)

  • Page 79: Index

    Solution decrease button (--), 23 Solution increase button (+), 23 Emptying the Hopper, 28 Supervisor Control Buttons, 13 Engaging Hopper Support Pin, 29 Sweep vacuum fan button, 27 Buttons, Controls and Instruments, 9, 12 Bypass valve, 70 M20 Diesel 331410 (4- -08)
  • Page 80 Relay Panel Fuses and Relays, 53 Front Wheel Support Bearing, 47 Hopper Door Pivots, 48 Hopper Lift Arm Pivots, 48 Lift Arm Latch, 48 Squeegee Caster Bearings, 47 Glow Plug Light, 11, 19 Steering Cylinder Bearing, 47 Torque Tubes, 48 M20 Diesel 331410 (4- -08)
  • Page 81 Preheat ---Glow Plug Light, 11, 19 Setting Brush Pressure, 22 Priming the fuel system, 52 Setting Conventional Solution Flow, 23 Propelling Motor, 69 Setting ES (Extended Scrub) Mode, 22 Torque Shaft Nut, 69 Setting ES Solution Flow, 23 M20 Diesel 331410 (4- -08)
  • Page 82 Replacing or Rotating the Side Squeegee Blades, 64 Squeegee Caster Bearings, 47 Squeegee Protectors (Option), 15 Starting the Machine, 19 Steering, Specifications, 73 Steering Cylinder Bearing, 47 Storage Information, 72 Freeze Protection, 72 Storing the Machine, 72 M20 Diesel 331410 (4- -08)

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