Tennant T7 Service Information Manual
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Tennant T7 Service Information Manual

Rider-scrubber
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T7
Rider- -Scrubber
Service Information Manual
R
The Safe Scrubbing Alternative
R
Hygenic Fully Cleanable Tanks
North America / International
331045
Rev. 01 (09-2008)
*331045*
www.tennantco.com
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Summary of Contents for Tennant T7

  • Page 1 Rider- -Scrubber Service Information Manual The Safe Scrubbing Alternative Hygenic Fully Cleanable Tanks North America / International 331045 Rev. 01 (09-2008) *331045* www.tennantco.com Home Find... Go To..

  • Page 2: Identify Machine Model And Serial Number

    2. (B) Identify the machine serial number from the data plate. Refer to the TENNANT Parts Manual. NOTE: Only use TENNANT Company supplied or equivalent parts. Parts and supplies may be ordered online, by phone, by fax or by mail.

  • Page 3: Table Of Contents

    Electrical Schematic ............38 Wire Harness Group (Page 1 of 7)......... 40 Key OFF, Operator NOT on Seat ........47 Key OFF, Battery Charger Plugged In ......48 Key ON, Operator on Seat ..........49 T7 331045 (9- -08) Home Find... Go To..

  • Page 4: Safety Precautions

    - - Report machine damage or faulty operation immediately. This machine is designed solely for cleaning - - Follow mixing and handling smooth flooring in an indoor environment. Tennant instructions on chemical containers. does not recommend using this machine in any other environment.

  • Page 5: General Machine Information

    Unknown Cause or Course of Action NOTE: Troubleshooting charts may be shown with optional equipment. The optional equipment may not be specified in these charts. Some machines may not be equipped with all components shown. T7 331045 (9- -08) Home Find... Go To..

  • Page 6: Component Locator

    S2 Horn button Flow button button Vacuum Fan ON/OFF Decrease Solution KEYSWITCH1 & Squeegee Flow button ON/OFF key switch Raise/Lower button SW6 Forward/ Reverse switch One Step Decrease Brush Scrub button Pressure button T7 331045 (9- -08) Home Find... Go To..
  • Page 7 Interlock Switch M1 Main Contactor Standoff 2 U4 Control Board (See Next Page for Details) F1 100A Fuse Standoff 1 MTR6 Scrub Batteries Head Actuator Shown with seat and battery shroud removed T7 331045 (9- -08) Home Find... Go To..
  • Page 8 Power Outputs Control Board Fuse – 15 Amp (Slow Blow) Battery Positive Connection from STANDOFF2 Battery Negative Connection Output to Output to Scrub Output to Vacuum Propel Motor Brush Motors Fan Motor T7 331045 (9- -08) Home Find... Go To..
  • Page 9 General Machine Information Component Locator (Page 4 of 5) Rear Machine Area Details SW4 Solution Tank Empty Switch SW3 Recovery Tank Full Switch MTR4 Vacuum Fan Motor SHOWN WITH REAR COVER REMOVED T7 331045 (9- -08) Home Find... Go To..
  • Page 10 UNDERSIDE VIEW Brake MTR1A Pedal Propel Motor Assembly Propel Pedal MTR1B Parking Brake Solenoid U2 Throttle/ Brake Sensor SHOWN WITH STEERING COLUMN COVER REMOVED MTR3 Right MTR2 Left Brush Motor Brush Motor T7 331045 (9- -08) Home Find... Go To..

  • Page 11: Specifications

    6.4 Km/h (4 mph) Maximum rated climb and descent angle with full tanks 6_/10.5% Maximum rated climb and descent angle with empty tanks 11_/19.25% Maximum rated climb and descent angle when scrubbing 4_/7% T7 331045 (9- -08) Home Find... Go To..

  • Page 12: Power Type

    24 Volt DC, 5A, 5.7 LPM (1.5 GPM) open flow, 70 psi bypass setting Solution flow rate 1.1 LPM (0.30 GPM) Detergent to water dilution ratio 1:1000 Detergent flow rate 1.35 CC/Minute (0.046 Ounces/Minute) T7 331045 (9- -08) Home Find... Go To..

  • Page 13: Dimensions

    800 mm (33.25 in) For 800 mm (32 in) squeegee 1000 mm (39.25 in) 1270 mm (50 in) Frame (Disk) 740 mm (29 in) Frame (Cyl) 1520 mm 810 mm (31.7 in) (60 in) T7 331045 (9- -08) Home Find... Go To..
  • Page 14 T7 SERVICE INFORMATION T7 331045 (9- -08) Home Find... Go To..

  • Page 15: Maintenance & Repair

    Unknown Cause or Course of Action NOTE: Troubleshooting charts may be shown with optional equipment. The optional equipment may not be specified in these charts. Some machines may not be equipped with all components shown. T7 331045 (9- -08) Home Find... Go To..

  • Page 16: Maintenance Points

    Maintenance T7 SERVICE INFORMATION MAINTENANCE POINTS 355033 T7 331045 (9- -08) Home Find... Go To..

  • Page 17: Maintenance Chart

    500 Hours Vacuum fan motor(s) Check motor brushes Scrub brush motors Check motor brushes Propelling motor Check motor brushes Tires Check for damage and wear LUBRICANT/FLUID ..Distilled water T7 331045 (9- -08) Home Find... Go To..

  • Page 18: Batteries

    Keep all metallic objects off the 04380 batteries. Replace any worn or damaged wires. Replace any defective batteries. To dispose of batteries, contact a battery dealer or your Tennant Service representative. GEL BATTERIES The Gel batteries are maintenance free and do not need to have the electrolyte level checked.

  • Page 19: Charging - Off-Board Charger

    FOR SAFETY: Before leaving or servicing covers open when charging. machine, stop on level surface, and turn off machine. 3. Tilt the operator seat forward and hook the seat latch into place to hold up the seat T7 331045 (9- -08) Home Find... Go To..

  • Page 20: Settings - On-Board Charger

    NOTE: If the red “ABNORMAL CYCLE” lamp If your machine is equipped with the on--board lights when the TENNANT charger is plugged into charger, the charger settings must be set for your a wall outlet, the charger cannot charge the battery type before charging.

  • Page 21: Charging - On-Board Charger

    E03 reappears check battery or ies undercharged due to a sulfated replace it. or faulty battery. Safety timer exceeded maximum Replace battery. charging time. Interrupts charging cycle. Possible internal short circuit. Contact Service Center. T7 331045 (9- -08) Home Find... Go To..

  • Page 22: Electric Motors

    (0.25 in) deflection from a force of 2.3 to 2.5 kg the initial 500 hours. (5.0 to 5.4 lb) at the belt midpoint. Check and adjust the belt tension every 100 hours of operation. T7 331045 (9- -08) Home Find... Go To..

  • Page 23: Scrub Brushes & Pads

    4. Open the side squeegee retainer pivot toward the front of the machine, then pull the side squeegee toward the rear of the machine to access the scrub brushes or pads. T7 331045 (9- -08) Home Find... Go To..
  • Page 24 7. Close the side squeegee and the retainer pivot, then insert the pin. NOTE: Be sure the pin is inserted completely through the bottom. 4. Reinsert the pad driver into the machine. T7 331045 (9- -08) Home Find... Go To..

  • Page 25: Cylindrical Brushes

    The idler door of that side of the scrub head is stamped with the same letter. Make sure the letter on the door matches the letter on the scrub head when replacing the doors. T7 331045 (9- -08) Home Find... Go To..
  • Page 26 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 T7 331045 (9- -08) Home Find... Go To..
  • Page 27 Tighten the mounting screw. 4. Remove idler plate from the scrub head by pressing the spring tab downward. 7. Check the brush patterns again and readjust as necessary until both patterns are the same. T7 331045 (9- -08) Home Find... Go To..
  • Page 28 Tighten the jam nut and the two scrub head mounting screws when finished. 5. Check the brush patterns again and readjust as necessary until both brush patterns are the same. T7 331045 (9- -08) Home Find... Go To..

  • Page 29: Replacing Fast-Pak

    4. Squeeze the button on the FaST supply hose supply hose connector on the storing plug to connector, then pull the empty FaST--PAK out prevent the hose from clogging. from the compartment. T7 331045 (9- -08) Home Find... Go To..

  • Page 30: Squeegee Blades

    3. Remove the squeegee suction hose from the 7. Loosen the two outer knobs on the rear rear squeegee assembly. Then loosen both squeegee assembly. Remove the front rear squeegee assembly mounting knobs. squeegee blade from the squeegee assembly. T7 331045 (9- -08) Home Find... Go To..
  • Page 31 11. Reinstall the rear squeegee retaining band onto the squeegee assembly. Be sure each of the flanges on the retaining band are seated in the cut outs in the rear squeegee assembly. T7 331045 (9- -08) Home Find... Go To..

  • Page 32: Replacing Side Squeegee Blades

    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. T7 331045 (9- -08) Home Find... Go To..

  • Page 33: Adjusting Rear Squeegee Deflection

    12 mm (0.50 in) for scrubbing the squeegee blade deflection after smooth floors and 15 mm (0.62 in) for rough adjustments are made. floors. 6. Readjust the squeegee blade deflection if necessary. 12 mm (0.50 in) 03719 T7 331045 (9- -08) Home Find... Go To..

  • Page 34: Skirts & Seals

    The recovery tank seal is located on the bottom of damage and wear after every 500 hours of the recovery tank cover. Check the seal for operation. damage and wear after every 100 hours of operation. T7 331045 (9- -08) Home Find... Go To..

  • Page 35: Pushing, Towing, & Transporting

    7. Route the rear tie--down straps through the Do not exceed 3.2 kp/h (2 mph). It is NOT opening at the center part of the rear axle. intended to be pushed or towed at a high speed. T7 331045 (9- -08) Home Find... Go To..

  • Page 36: Machine Jacking

    Use a hoist or jack that will support the weight of the machine. Jack machine up at designated locations only. Block machine up with jack stands. T7 331045 (9- -08) Home Find... Go To..

  • Page 37: Machine Troubleshooting

    Little or no solution flow to Solution tank empty Fill solution tank the floor (Conventional Solution flow turned off Turn solution flow on Scrubbing Mode) Solution supply lines plugged Flush solution supply lines T7 331045 (9- -08) Home Find... Go To..
  • Page 38 FaST system is not primed To prime, operate the FaST solu- tion system for a few minutes Clogged filter screen Drain solution tank, remove and clean filter screen Faulty solution pump Replace solution pump T7 331045 (9- -08) Home Find... Go To..

  • Page 39: Electrical Troubleshooting Information

    Unknown Cause or Course of Action NOTE: Troubleshooting charts may be shown with optional equipment. The optional equipment may not be specified in these charts. Some machines may not be equipped with all components shown. T7 331045 (9- -08) Home Find... Go To..

  • Page 40: Commonly Used Electrical Symbols & Terms

    Example of Wiring Numbers & Colors: Wiring Color Codes (Unless otherwise marked) Right Most Digit Color of Wire of Wire Number Pink Brown Orange 1 RED 13 BLK Yellow Green Blue Purple Gray White T7 331045 (9- -08) Home Find... Go To..
  • Page 41 T7 SERVICE INFORMATION Electrical Troubleshooting T7 331045 (9- -08) Home Find... Go To..

  • Page 42: Electrical Schematic

    Electrical Troubleshooting T7 SERVICE INFORMATION Electrical Schematic (page 1 of 2) 1021038 T7 331045 (9- -08) Home Find... Go To..
  • Page 43 T7 SERVICE INFORMATION Electrical Troubleshooting Electrical Schematic (page 2 of 2) 1021038 T7 331045 (9- -08) Home Find... Go To..

  • Page 44: Wire Harness Group

    Electrical Troubleshooting T7 SERVICE INFORMATION Wire Harness Group (page 1 of 7) T7 331045 (9- -08) Home Find... Go To..
  • Page 45 T7 SERVICE INFORMATION Electrical Troubleshooting Wire Harness Group (page 2 of 7) T7 331045 (9- -08) Home Find... Go To..
  • Page 46 Electrical Troubleshooting T7 SERVICE INFORMATION Wire Harness Group (page 3 of 7) T7 331045 (9- -08) Home Find... Go To..
  • Page 47 T7 SERVICE INFORMATION Electrical Troubleshooting Wire Harness Group (page 4 of 7) T7 331045 (9- -08) Home Find... Go To..
  • Page 48 Electrical Troubleshooting T7 SERVICE INFORMATION Wire Harness Group (page 5 of 7) T7 331045 (9- -08) Home Find... Go To..
  • Page 49 T7 SERVICE INFORMATION Electrical Troubleshooting Wire Harness Group (page 6 of 7) T7 331045 (9- -08) Home Find... Go To..
  • Page 50 Electrical Troubleshooting T7 SERVICE INFORMATION Wire Harness Group (page 7 of 7) T7 331045 (9- -08) Home Find... Go To..

  • Page 51: Key Off, Operator Not On Seat

    (Unless otherwise marked) Right Most Digit Color of Wire of Wire Number Pink Brown Orange Yellow Green Blue Purple Gray White = Battery Negative or Logic Ground = Battery Positive or Positive Output T7 331045 (9- -08) Home Find... Go To..

  • Page 52: Key Off, Battery Charger Plugged In

    (Unless otherwise marked) Right Most Digit Color of Wire of Wire Number Pink Brown Orange Yellow Green Blue Purple Gray White = Battery Negative or Logic Ground = Battery Positive or Positive Output T7 331045 (9- -08) Home Find... Go To..

  • Page 53: Key On, Operator On Seat

    Color of Wire of Wire Number Pink Brown Orange SWITCH Yellow Green Blue Purple RIGHT SIDE Gray DASH PANEL White = Battery Negative or Logic Ground = Battery Positive or Positive Output T7 331045 (9- -08) Home Find... Go To..

  • Page 54: Electrical Troubleshooting Information (Continued)

    Tank Level Switches are ALWAYS in the OPEN position with low or White empty tank = Battery Negative or Logic Ground Tank Level Switches are ALWAYS in the CLOSED position with full tank = Battery Positive or Positive Output T7 331045 (9- -08) Home Find... Go To..

  • Page 55: Horn & Hour Meter Systems

    Horn pulses when a fault is detected (Directional Switch must be in FORWARD = Battery Negative Position) – refer to “Diagnostic/Beep Code” chart or Logic Ground = Battery Positive or Positive Output T7 331045 (9- -08) Home Find... Go To..

  • Page 56: Propel Forward System

    The Propel Pedal Position HALL EFFECT Sensor sends a varying voltage = Output that can signal (1 to 4 Volts) to control board, based upon position of the propel pedal Change Polarity T7 331045 (9- -08) Home Find... Go To..

  • Page 57: Propel Reverse System

    The Propel Pedal Position HALL EFFECT Sensor sends a varying voltage = Output that can signal (1 to 4 Volts) to control board, based upon position of the propel pedal Change Polarity T7 331045 (9- -08) Home Find... Go To..

  • Page 58: Braking System

    Blue Brake Solenoid is DE-energized to apply brake. Purple Dynamic Braking will occur before Brake Solenoid is de-energized. Gray White = Battery Negative or Logic Ground = Battery Positive or Positive Output T7 331045 (9- -08) Home Find... Go To..

  • Page 59: Scrub Head & Squeegee Actuator Systems

    Logic Ground Squeegee actuator can also be operated by pressing the “Vacuum Fan/ = Battery Positive Squeegee Button”, without operating scrub brushes or Positive Output = Output that can Change Polarity T7 331045 (9- -08) Home Find... Go To..
  • Page 60 Scrub head actuator travel is controlled by monitoring actuator current in upward travel and brush motor current in downward travel Squeegee actuator can also be operated by pressing the “Vacuum Fan/ Squeegee Button”, without operating scrub brushes T7 331045 (9- -08) Home Find... Go To..

  • Page 61: Scrub Brush Motors System

    Scrub Brush Motors will function only when propelling either forward or reverse = Battery Negative or Logic Ground Scrub Brush Pressure is controlled by monitoring brush motor current = Battery Positive or Positive Output T7 331045 (9- -08) Home Find... Go To..

  • Page 62: Vacuum Fan System

    Pressing the “One Step Scrub Button” will activate Vacuum Fan Gray Vacuum Fan can also be operated by pressing the “Vacuum Fan/Squeegee White Button”, without operating scrub brushes = Battery Negative or Logic Ground = Battery Positive or Positive Output T7 331045 (9- -08) Home Find... Go To..

  • Page 63: Fast System

    Gray Solution Volume Control Buttons will NOT operate & Solution Volume White Control LED’s will be OFF during FaST scrubbing = Battery Negative or Logic Ground = Battery Positive or Positive Output T7 331045 (9- -08) Home Find... Go To..

  • Page 64: Conventional Solution System

    Conventional Solution system will operate ONLY if FaST LED is OFF Gray Solution Volume Control Buttons & LED’s will operate ONLY during White Conventional scrubbing = Battery Negative or Logic Ground = Battery Positive or Positive Output T7 331045 (9- -08) Home Find... Go To..

  • Page 65: Led Locations & Descriptions

    T7 SERVICE INFORMATION Electrical Troubleshooting LED Locations & Descriptions GREEN GREEN GREEN GREEN GREEN GREEN YELLOW YELLOW T7 331045 (9- -08) Home Find... Go To..

  • Page 66: Operational Modes & Interlocks

    Current condition in the Motor High Refer to "High Current Faults" chart on next page or Vacuum Fan Motor – Scrub function Scrub Brush Motors or Current Fault shuts off Vacuum Fan Motor T7 331045 (9- -08) Home Find... Go To..

  • Page 67: Diagnostic & Fault Alarms

    E-STOP switch has closed) Battery charger plugged Propel Interlock: Prevents movement of the machine FORWARD into machine with Horn sounds beep cycle (repeats) Charger Plugged In with charger plugged in Key Switch ON T7 331045 (9- -08) Home Find... Go To..

  • Page 68: Diagnostic & Configuration Modes

    Brush Forward Propel Speed selection MIDDLE (#2) LED = 2.7 mph / 4.3 kph (REFER TO PAGE 71) Pressure LED setting UPPER (#3) LED = 3.5 mph / 5.5 kph T7 331045 (9- -08) Home Find... Go To..

  • Page 69: Display Software Revision Mode

    Solution Flow Increase Button Brush Pressure Increase Button LED 3 LED 3 LED 2 LED 2 Solution Flow LED 1 Decrease Button Brush Pressure LED 1 Decrease Button = BLINKING (except if zero) T7 331045 (9- -08) Home Find... Go To..

  • Page 70: Self Test Mode

    # 1 (Lower) Brush Pressure LED Head Actuator # 3 (Upper) Solution Flow LED Water Valve # 2 (Middle) Solution Flow LED Squeegee Actuator # 1 (Lower) Solution Flow LED Brake Recovery Tank Full LED Horn/Back-up Alarm T7 331045 (9- -08) Home Find... Go To..

  • Page 71: Input Display Mode

    T7 SERVICE INFORMATION Electrical Troubleshooting . . . Input Display Mode T7 331045 (9- -08) Home Find... Go To..

  • Page 72: Manual Mode

    Electrical Troubleshooting T7 SERVICE INFORMATION . . . Manual Mode T7 331045 (9- -08) Home Find... Go To..

  • Page 73: Propel/Brake Diagnostics

    3 Slightly Depressed 1.5 to 1.89 VDC Brake Brush Pressure LED's indicate pedal is fully Halfway Depressed 1.89 to 2.27 VDC depressed Fully Depressed 2.27 to 4.0 VDC T7 331045 (9- -08) Home Find... Go To..

  • Page 74: Battery Select Mode & Voltage Levels

    Full discharge 21.0 21.3 21.6 22.2 LED's: R=RED Y=YELLOW G=GREEN =OFF =BLINKING *Voltage measured at circuit board - Assume 0.5 Volts higher at batteries (under load) **Used only under instruction of battery manufacturer T7 331045 (9- -08) Home Find... Go To..

  • Page 75: Reverse Alarm & Propel Speed Select Modes

    MAXIMUM SCRUB SPEED # 1 (Lower) LED 2.0 mph / 3.2 kph #1 & # 2 LEDs 2.7 mph / 4.3 kph #1, #2, & # 3 LEDs 3.5 mph / 5.5 kph T7 331045 (9- -08) Home Find... Go To..

  • Page 76: Inputs & Outputs Table

    Electrical Troubleshooting T7 SERVICE INFORMATION . . . Inputs & Outputs Table T7 331045 (9- -08) Home Find... Go To..

  • Page 77: Amer Drive Motor

    Unknown Cause or Course of Action NOTE: Troubleshooting charts may be shown with optional equipment. The optional equipment may not be specified in these charts. Some machines may not be equipped with all components shown. T7 331045 (9- -08) Home Find... Go To..

  • Page 78: Drive Motor Exploded View

    Volts Values Amps Tennant Part Number Gear Ratio Duty Cycle Date Made Serial Number Amp draw with drive wheel off of the floor should not exceed: 24volt 7.5 amps 36volt 6.5 amps T7 331045 (9- -08) Home Find... Go To..

  • Page 79: Commutator Brush Replacement

    •Do not allow sleeve to come out when brush is removed. Two of the four brush sleeves use brass nuts as spacers which may drop into assembly. Always remove the complete box to service the contact ring carbon brushes. T7 331045 (9- -08) Home Find... Go To..

  • Page 80: Brake Solenoid

    •Curved carbon brush •Fixed backing nut Brake Solenoid The air gap should be .31mm(.012in) to.019mm(.008in). .20mm Measurement is taken from three different angles while the brake is mounted to the drive motor. T7 331045 (9- -08) Home Find... Go To..

  • Page 81: Brake Rotor

    Measuring total thickness, replace when worn to 4mm (0.1718in), or 1mm or less on each side . Brake dragging may be caused by: Air gap too narrow Intermittent electrical connection Debris in air gap T7 331045 (9- -08) Home Find... Go To..

  • Page 82: Drive Motor Disassembly & Repair

    To make the reassembly of the brush holder assembly easier unscrew the caps and remove the carbon brushes. T7 331045 (9- -08) Home Find... Go To..
  • Page 83 Keep the gearbox side bracket on the table and remove the armature. Pay attention: the oil must not come out from the gearbox otherwise it will damage the o ring. T7 331045 (9- -08) Home Find... Go To..
  • Page 84 T7 SERVICE INFORMATION T7 331045 (9- -08) Home Find... Go To..
  • Page 85 We Need Your Help... As part of Tennant’s Zero Defects Program, we want to know about errors you have found or suggestions you may have regarding our machine manuals. If you find an error or have a suggestion, please complete this postage-paid form and mail it to us.
  • Page 86 Home Find... Go To..
  • Page 87 We Need Your Help... As part of Tennant’s Zero Defects Program, we want to know about errors you have found or suggestions you may have regarding our machine manuals. If you find an error or have a suggestion, please complete this postage-paid form and mail it to us.
  • Page 88 Home Find... Go To..

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