Tennant T300 Service Manual
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Tennant T300 Service Manual

Automatic floor scrubber
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Hygenic
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Recovery Tank
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TennantTrue
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IRIS
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T300e
Automatic Floor Scrubber
Service Manual
*9014510*
T300
English EN
9014510
Rev. 02 (10-2023)
R

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Summary of Contents for Tennant T300

  • Page 1 T300 T300e Automatic Floor Scrubber English EN Service Manual ® Hygenic Fully cleanable Recovery Tank ® TennantTrue Parts ® IRIS a Tennant Technology 9014510 For the latest Parts Manuals and other Rev. 02 (10-2023) language Operator Manuals, visit: *9014510* www.tennantco.com/manuals...
  • Page 2 ATTENTION: Do not remove machine from pallet party licenses. More information can be found at: www.tennantco. com/opensource without using ramp, machine damage may occur. Specifications and parts are subject to change without notice. Original Instructions. Copyright © 2015- 2023 Tennant Company. All rights reserved.

  • Page 3: Table Of Contents

    T300e Failed To Propel .........75 After Weekly Use ........35 T300 Scrub Motor On ........76 After Every 50 Hours Of Use ....36 T300 Scrub Motor Failed To Turn On ....77 After Every 100 Hours Of Use ....36 T300e Scrub Motor On .........78 Electric Motors ..........37 T300e Scrub Motor Failed To Turn On ..79...
  • Page 4 (Push-To-Connect) Fittings....137 T300e Solution Control Failed To Turn On (ec-H2O) ..........93 Disconnect Hoses From PTC (Push-To-Connect) Fittings....138 T300 SE (Severe Environment) On ....94 Scrubbing Systems ........139 T300 SE (Severe Environment) Failed To Turn On...........95 Dual Disk Scrub Head Lift Group ...139 SUN-I/O Circuit Board Testing Single Disk Scrub Head Lift Group ..140...
  • Page 5 Replace The ec-H2O Solution Pump (Option) ..........188 Replace The Water Solenoid Valve ..190 SE (Severe Environment) Group (Option) ..........191 Remove/Install The Severe Environment Detergent Pump Assembly ...........192 Remove/Install The Severe Environment Detergent Metering Liquid Level Sensor ......193 T300, T300e Service Manual (10-2023)

  • Page 6: Safety Precautions

    Read manual before operating machine. With pads or accessories not supplied or approved by Tennant. The use of other Do not use or pick up flammable materials. pads may impair safety. Do not use near flammable liquids, vapors or In areas with possible falling objects.
  • Page 7 Use a hoist or adequate assistance when lifting batteries. Battery installation must be done by trained personnel. Wear personal protection equipment as needed and where recommended in this manual. For Safety: wear protective gloves. For Safety: wear eye protection. T300, T300e Service Manual (10-2023)
  • Page 8 WARNING LABEL - Electrical hazard. Magnetic Field Hazard. Magnetic Disconnect battery pad driver/brush can be harmful cables before servicing to pacemaker wearers or medical machine. implants. Located on circuit breaker Located on Insta-Click magnetic panel. pad driver/brush. T300, T300e Service Manual (10-2023)
  • Page 9 Hazard. Disconnect battery to pacemaker wearers or medical Located on cylindrical cables before servicing implants. scrub head model. machine. Located on Insta-Click magnetic pad Located on circuit board panel. driver/brush. T300, T300e Service Manual (10-2023)

  • Page 10: General Information

    24. Solution tank level/drain hose 11. Squeegee foot pad 25. Parking brake 12. Squeegee assembly 26. Dual down pressure lever (T300e option) 13. Control handle 27. Solution flow control knob (T300e) 14. Control handle start bail T300, T300e Service Manual (10-2023)

  • Page 11: Electrical Schematic Symbols

    Sweep ON N.C. Relay Contacts Sensor Vac & Swe (Variable Resistor) Notes N.O. Relay Contacts Momenary Switch N.O. Assembly Contact Switch N.C. Horn or Alarm AC Plug Operational Solenoid Valve Capacitor Light Electro- Magnetic Brake T300, T300e Service Manual (10-2023)

  • Page 12: Electrical Schematic T300 (Drive Model)

    GENERAL INFORMATION ELECTRICAL SCHEMATIC T300 (DRIVE MODEL) - 1 of 3 W/FUSE,GND CABLE ASSY B+ W/FUSE,GND CABLE ASSY 12 VDC 12 VDC (2) 12VDC BATTERIES 1/RED 13/BLK OFF BOARD CHARGER CABLE ASSY P1-B- 13/BLK 13/BLK CABLE, CHARGER PCB ASSEMBLY INTERFACE MODULE...
  • Page 13 GENERAL INFORMATION ELECTRICAL SCHEMATIC T300 (DRIVE MODEL) - 2 of 3 J3-4 NOT_USED1 FUSE-1 INCLUDED IN CABLE ASSEMBLY 1/RED BLUE J3-3 SHIELD1 J3-2 CAN-1 J3-1 24/YEL J10-1 CAN+1 HALF_0A MTR-2 INCLUDED IN CABLE ASSEMBLY 13/BLK 24/YEL J10-2 HALF_0B SCRUB MOTOR-1...
  • Page 14 GENERAL INFORMATION ELECTRICAL SCHEMATIC T300 (DRIVE MODEL) - 3 of 3 PAGE 3 = PAGE 1 WITH OPTIONAL LCD TOUCHSCREEN. B+ W/FUSE,GND CABLE ASSY B+ W/FUSE,GND CABLE ASSY 12 VDC 12 VDC (2) 12VDC BATTERIES 1/RED 13/BLK OFF BOARD CHARGER CABLE ASSY...

  • Page 15: Electrical Schematic T300 (Push Model)

    GENERAL INFORMATION ELECTRICAL SCHEMATIC T300 (PUSH MODEL) - 1 of 3 B+ W/FUSE,GND CABLE ASSY B+ W/FUSE,GND CABLE ASSY 12 VDC 12 VDC (2) 12VDC BATTERIES 1/RED 13/BLK OFF BOARD CHARGER CABLE ASSY P1-B- 13/BLK 13/BLK CABLE, CHARGER INTERFACE MODULE...
  • Page 16 GENERAL INFORMATION ELECTRICAL SCHEMATIC T300 (PUSH MODEL) - 2 of 3 J3-4 NOT_USED1 J3-3 FUSE-1 SHIELD1 INCLUDED IN CABLE ASSEMBLY 1/RED 3/ORA J3-2 CAN-1 J3-1 24/YEL J10-1 CAN+1 HALF_0A MTR-2 INCLUDED IN CABLE ASSEMBY 13/BLK 24/YEL J10-2 HALF_0B SCRUB MOTOR...
  • Page 17 GENERAL INFORMATION ELECTRICAL SCHEMATIC T300 (PUSH MODEL) - 3 of 3 PAGE 3 = PAGE 1 WITH OPTIONAL LCD TOUCHSCREEN. B+ W/FUSE,GND CABLE ASSY B+ W/FUSE,GND CABLE ASSY 12 VDC 12 VDC (2) 12VDC BATTERIES 1/RED 13/BLK OFF BOARD CHARGER CABLE ASSY...

  • Page 18: Electrical Schematic T300E (Drive Model)

    42/BRN 13/BLK AUX. SCRUB BRUSH RELAY SCRUB BRUSH RELAY 42/BRN 13/BLK MTR2 CB-5 1/RED 12/BRN 26/BLU 13/BLK SCRUB BRUSH RELAY SCRUB BRUSH MOTOR MTR3 CB-6 1/RED 15/GRN 29/WHT 13/BLK VAC FAN RELAY VAC FAN MOTOR T300, T300e Service Manual (10-2023)
  • Page 19 105/GRN REAR FRAME 105/GRN OP.STATION BASE 105/GRN EC-H2O 105/GRN TRANSAXLE 105/GRN 105/GRN VAC FAN1 STATIC GROUND @ THE SCRUB HEAD J2-7 105/GRN USER INTERFACE STATIC GROUNDING (PART OF MAIN HARNESS AND OP.STATION HARNESS) KEY SWITCH1 T300, T300e Service Manual (10-2023)

  • Page 20: Electrical Schematic T300E (Push Model)

    (SW. HELD = OPEN = FULL UP POSITION) 6/BLU 13/BLK AUX. SCRUB BRUSH RELAY SCRUB BRUSH RELAY 42/BRN 13/BLK MTR2 CB-5 1/RED 12/BRN 26/BLU 13/BLK SCRUB BRUSH RELAY SCRUB BRUSH MOTOR MTR3 CB-6 1/RED 15/GRN 29/WHT 13/BLK VAC FAN MOTOR T300, T300e Service Manual (10-2023)
  • Page 21 J11-4 CELL_A1 J11-5 4EB/YEL CELL_A2 J12-10 OPEN_4 SW-11 EC-H20 FLUSH SW. 3EA/ORA J11-3 J11-1 13EA/BLK-WHT CELL_B1 FLUSH_GND J11-6 J11-2 3EB/ORA 9EA/WHT CELL_B2 FLUSH_SW OPT. EC-H2O MODULE HARNESS EC-H20 MODULE EC-H2O RELAY 6/BLU 13/BLK 13/BLK 6/BLU T300, T300e Service Manual (10-2023)
  • Page 22 • Detergent Tank Empty • Detergent Tank Not Empty • Low Battery Voltage (Wet < 21.9 V, AGM < 22.7 V) • Fault • Battery Charger ON Interlock MOM001_1 T300, T300e Service Manual (10-2023)

  • Page 23: Fastener Torque

    508 - 660 Nm 177 - 230 Nm 409 - 530 Nm 574 - 745 Nm 686 - 890 Nm 227 - 295 Nm 520 - 675 Nm 732 - 950 Nm 879 - 1140 Nm T300, T300e Service Manual (10-2023)

  • Page 24: General Machine Dimensions/Capacities/Performance

    24 VDC, 0.6 hp / 0.47 kW Water lift 42 in / 1067 mm Water lift - Quiet Mode 28 in / 711 mm 24 VDC, 1.0 gpm / 3.8 L/min, min open flow ec-H2O solution pump Machine voltage 24 VDC T300, T300e Service Manual (10-2023)

  • Page 25: General Machine Dimensions/Capacities/Performance

    Machine vibration at hand-arm* <2.5 m/s2 Ambient operating temperature Min: 32°F/0°C, Max: 110°F/43°C *Values per EN 60335-2-72. Specifications are subject to change without notice. *Values per EN 60335-2-72, Specifications are subject to change without notice. T300, T300e Service Manual (10-2023)

  • Page 26: General Machine Dimensions/Capacities/Performance

    24 VDC, 0.6 hp / 0.47 kW Water lift 42 in / 1067 mm Water lift - Quiet Mode 28 in / 711 mm 24 VDC, 1.0 gpm / 3.8 L/min, min open flow ec-H2O solution pump Machine voltage 24 VDC T300, T300e Service Manual (10-2023)

  • Page 27: General Machine Dimensions/Capacities/Performance

    Sound power level uncertainty L 83.8 dB(A) 85 dB(A) 83.5 dB(A) uncertainty K Machine vibration at hand-arm* <2.5 m/s2 Ambient operating temperature Min: 32°F/0°C, Max: 110°F/43°C *Values per EN 60335-2-72. Specifications are subject to change without notice. T300, T300e Service Manual (10-2023)
  • Page 28 1302 mm 508 mm 17 in / 43 cm 17 in / 43 cm Model Model 54 in 22 in 1372 mm 559 mm 20 in / 50 cm 20 in / 50 cm Model Model T300, T300e Service Manual (10-2023)
  • Page 29 GENERAL INFORMATION DUAL DISK MODEL 30.4 in 772 mm 43.1 in 1095 mm 51.25 in 26 in 1314 mm 660 mm T300, T300e Service Manual (10-2023)
  • Page 30 GENERAL INFORMATION CYLINDRICAL BRUSH MODEL 30.4 in 772 mm 43.1 in 1095 mm 50.5 in 25 in 1283 mm 635 mm T300, T300e Service Manual (10-2023)
  • Page 31 GENERAL INFORMATION ORBITAL PAD MODEL 30.4 in 772 mm 43.1 in 1095 mm 49 in 20.5 in 1245 mm 521 mm T300, T300e Service Manual (10-2023)

  • Page 32: Maintenance

    Batteries, terminals and cables Check and clean 500 Hours Lower orbital isolators Replace (4 qty) 750 Hours Vacuum motor Replace carbon brushes 1250 Propel motor Replace carbon brushes Hours Brush motor Replace carbon brushes Brush belt Replace belt T300, T300e Service Manual (10-2023)

  • Page 33: Machine Maintenance

    AFTER DAILY USE 1. Drain and rinse out the recovery tank. See DRAINING TANKS in OPERATOR MANUAL. 5. Disk scrub head - Turn pad over or replace when worn. 2. Remove the debris tray and empty. T300, T300e Service Manual (10-2023)
  • Page 34 7. Wipe the squeegee blades clean. Inspect 10. Cylindrical scrub head - Remove and clean blades for wear and damage. Rotate debris trough. blade if worn. See SQUEEGEE BLADE REPLACEMENT. T300, T300e Service Manual (10-2023)

  • Page 35: After Weekly Use

    1. Check the electrolyte level in all batteries. See cleaning detergent at full concentration. BATTERIES. Replace cap. 2. Remove the drip tray cover from the squeegee 12. Charge batteries. See BATTERIES. assembly and clean reservoir. T300, T300e Service Manual (10-2023)

  • Page 36: After Every 50 Hours Of Use

    Replace brushes when they no longer system if damaged. clean effectively. FOR SAFETY: When servicing batteries, wear personal protection equipment as needed. Avoid contact with battery acid. 3. Cylindrical scrub head - Remove debris buildup from underside of scrub head. T300, T300e Service Manual (10-2023)

  • Page 37: Electric Motors

    Replace belts every 1250 hours. Cylindrical Brush Drive Belt. See REMOVE/ REPLACE THE BRUSH BELT (CYLINDRICAL SCRUB HEAD MODEL). Dual disk brush drive belt. See REPLACE THE BRUSH MOTOR BELT (DUAL DISK MODEL). T300, T300e Service Manual (10-2023)

  • Page 38: Batteries

    Check the battery electrolyte level weekly. NOTE: Do Not check the electrolyte level if the machine is equipped with the optional battery watering system. Proceed to MANUAL BATTERY WATERING SYSTEM (Trojan Battery Option). T300, T300e Service Manual (10-2023)

  • Page 39: Charging Batteries

    AC power supply cord into a properly machine. The use of other battery chargers not grounded wall outlet. Refer to the off-board supplied and approved by Tennant are prohibited. battery charger owner manual for operating instructions. If machine is equipped with an off-board battery...

  • Page 40: Battery Charger Settings

    See OFF-BOARD BATTERY CHARGER:. IRIS MODELS: For models equipped with capability to report battery charging data via IRIS, Tennant recommends using the same battery type. If a different amp hour or battery type is desired, Contact Tennant Technical Support to report the new battery.

  • Page 41: On-Board Battery Charger

    2. Unwrap the battery charger power cord from the cord hooks. 3. Using a T25 star screwdriver, remove the two screws located at the bottom of the control console to access battery charger. T300, T300e Service Manual (10-2023)

  • Page 42: Change On-Board Battery Charger

    See SUPERVISOR CONTROLS instructions in OPERATOR MANUAL. To change the on-board battery charger settings for a different battery type : 1. Turn the key switch ON. 2. Press the settings button located on the home screen. T300, T300e Service Manual (10-2023)

  • Page 43: Manual Battery Watering System (Trojan Battery Option)

    2. After charging batteries, check the electrolyte level indicator on each battery cap. If any Distilled of the indicator floats are low, add water as Water described in the next step. Level Indicator Float T300, T300e Service Manual (10-2023)

  • Page 44: Circuit Breakers

    Key switch, control board 10 A ec-H2O module / pump 30 A Propel T300e Circuit Breaker Rating Circuit Protected Key switch, control board ec-H2O module ec-H2O pump 30 A Propel 37 A Brush motor 20 A Vacuum motor T300, T300e Service Manual (10-2023)

  • Page 45: Squeegee Blade Replacement

    This will separate the knobs. spring loaded blade retainer from squeegee frame. To loosen the knobs quickly, squeeze the blade retainer and squeegee frame together. 3. Remove worn blade(s) from the blade retainer. T300, T300e Service Manual (10-2023)

  • Page 46: Ec-H2O Nanoclean Water Conditioning Cartridge Replacement

    2. Lift the recovery tank to access the ec-H2O water conditioning cartridge. Drain recovery tank before lifting tank. 5. Install the new cartridge and reconnect the two hoses. Make sure the hose connectors are fully inserted into the cartridge. T300, T300e Service Manual (10-2023)
  • Page 47 The three indicator lights will then blink three times to indicate timer has been reset. Repeat process if the three Service switch 3 indicator lights Solution flow button T300, T300e Service Manual (10-2023)

  • Page 48: Loading/Unloading Machine For Transporting

    3. Once loaded, position the front of the machine up against the front of the trailer or truck. Lower the scrub head, turn key off and set parking brake, if equipped. 4. Place a block behind each wheel. T300, T300e Service Manual (10-2023)

  • Page 49: Storing Machine

    4. Turn machine on and operate the solution flow system. Turn the machine off when the antifreeze is visible on floor. Models equipped with ec-H2O option - Operate ec-H2O scrubbing to cycle antifreeze through system. T300, T300e Service Manual (10-2023)

  • Page 50: Troubleshooting

    2. J10 connector on scrub and battery. controller board unplugged. 2. If connections are good, 3. Scrub controller board power replace control board. disconnected. 4. Scrub controller in-line power fuse defective/blown. 5. Scrub controller board problem. T300, T300e Service Manual (10-2023)
  • Page 51 2. Check connections/wiring. unplugged. 3. Large white i-Drive connector pin 7 disconnected. 4. i-Drive power wire unplugged. 5. Scrub controller board connector J9 unplugged and bail activated. 6. Scrub controller board connector J9 pin 7 disconnected. T300, T300e Service Manual (10-2023)
  • Page 52 Replace controller. 0x0908 Propel RAM 1. i-Drive unit is faulty. 1. Replace i-Drive. Check Error 0x0909 Propel Data 1. i-Drive unit is faulty. 1. Replace i-Drive. Check Error T300, T300e Service Manual (10-2023)
  • Page 53 2. If trip is still present after potentiometer, programming, connectors, and wiring have been checked, controller may be defective. Replace controller. 0x0913 Propel Joystick 1. i-Drive unit is faulty. 1. Replace i-Drive. Error Right 2 T300, T300e Service Manual (10-2023)
  • Page 54 Current Feedback Out of Range 0x091E Propel Negative 1. i-Drive unit is faulty. 1. Replace i-Drive. Current Feedback Null 0x091F Propel Negative 1. i-Drive unit is faulty. 1. Replace i-Drive. Current Feedback Out of Range T300, T300e Service Manual (10-2023)
  • Page 55 2 Operation has been set to controller. ‘Latched’. 2. If trip is still present after state of the input, programming, connectors, and wiring have been checked, controller may be defective. Replace controller. T300, T300e Service Manual (10-2023)
  • Page 56 1. Check condition of batteries, Battery voltage has fallen below connectors, and relevant approximately 13.5V. wiring to controller. 2. If trip is still present after batteries, connectors, and wiring have been checked, controller may be defective. Replace controller. T300, T300e Service Manual (10-2023)
  • Page 57 Control wiring have been checked, Log. Number of ‘4401’ trips controller may be defective. shown in System Log should Replace controller. equal cumulative number of trip occurrences shown in Control Log. T300, T300e Service Manual (10-2023)
  • Page 58 Controller detects Throttle switch. Potentiometer has been 4. Replace switch or bail displaced at start-up and handle if damaged. parameter Throttle Operated At Power-Up has been set to ‘Trip’. T300, T300e Service Manual (10-2023)
  • Page 59 Load Fault hardware design limit. ☼ ☼ ☼ ● ☼ 0x0106 Scrub Motor 1. Shorted load condition. 1. Check wire harness. Repair Short Fault 2. Higher current draw than as necessary. hardware design limit. T300, T300e Service Manual (10-2023)
  • Page 60 Warning complete charge. 2. Replace charger. 2. Charger is faulty. ● ☼ ☼ ● ☼ 0xF104 Charger 1. Batteries not charging 1. Check for low battery Timer Phase I correctly. voltage. Warning T300, T300e Service Manual (10-2023)

  • Page 61: T300/T300E Ec-H2O Nanoclean Icon Faults

    3. If problem persists, replace ec- down. H2O pump. ☼ ● ● ● ● 0x0717 ec-H2O Pump 1. Driver on control board 1. Key cycle machine. FET short fault damaged/shorted. 2. If problem persists, replace ec- H2O module. T300, T300e Service Manual (10-2023)
  • Page 62 0x0746 ec-H2O WCM 1. Shorted load condition. 1. Check harness. Pump Short 2. Some higher current 2. Verify water conditioning module Warning draw than hardware design micro pump is functional. limit. T300, T300e Service Manual (10-2023)
  • Page 63 Detergent Tank 1. Detergent tank is empty. 1. Fill detergent tank. Empty ec-H2O 0x0707 ec-H2O Water 1. ec-H2O water 1. Replace ec-H2O water indicator Conditioning conditioning cartridge is conditioning cartridge. blinking blue/ Cartridge expired. Expired Warning T300, T300e Service Manual (10-2023)

  • Page 64: Faults - Off Board Battery Charger

    Safety timer of one of the phases for battery capacity and selected voltage has been activated. corresponds to battery voltage. Also, ensure that there are no elements in short circuit and that battery is not sulphated. T300, T300e Service Manual (10-2023)

  • Page 65: Troubleshooting

    No fault is reported connected. by machine. No Charge Mode 1. User Interface board is not receiving 1. Ensure pin connections between LEDs power from charger at J7-9. UI and charger connectors are not broken or unseated. T300, T300e Service Manual (10-2023)

  • Page 66: System Troubleshooting

    (option) AC Power Cord J8-7 Machine Control Module (option) Battery Positive + Battery Negative - CAN + CAN-bus + P2-6 AC Volts CAN - CAN-bus - P2-10 J3-3 Interface CAN GROUND 113/BLK/WHT Module P2-1 PMC021 T300, T300e Service Manual (10-2023)

  • Page 67: Batteries Failed To Charge/Reduced Run Time (Onboard Charger)

    0.050 (50 points) spe- cific gravity of each other? Terms: AC = Alternating Current AGM = Absorbed Glass Mat Specific Gravity = Relative density of a substance compared to water (1.000 specific gravity) T300, T300e Service Manual (10-2023)

  • Page 68: Off Board Battery Charging On (Option)

    12 Volt Battery Charger Connector Not Used N.O. 5/GRN 6/BLU N.C. J7-10, J7-7 Interface 4/YEL Module Switch Battery Charger Interlock Switch ec-H2O Relay (option) J8-7 Machine Control Module (option) Battery Positive + Battery Negative - PMC021 T300, T300e Service Manual (10-2023)

  • Page 69: Batteries Failed To Charge/ Reduced Run Time (Off Board Charger)

    0.050 (50 points) specific gravity of each other? Terms: AC = Alternating Current AGM = Absorbed Glass Mat Specific Gravity = Relative density of a substance compared to water (water = 1.000 specific gravity) T300, T300e Service Manual (10-2023)

  • Page 70: Power-Up On

    N.C. P2-2 RED Cable Switch AC Power Cord Onboard Battery Charger (Opt) 6/BLU 13/BLK Interface Module J6 B+ Machine Control Module (Opt) Touch Panel Battery Positive + LCD Option Battery Negative - AC Volts PMC021 T300, T300e Service Manual (10-2023)

  • Page 71: Machine Failed To Power Up

    Test voltage applied to the power-up drop location subsystem as shown on electrical and repair or schematic replace neces- • Are the electrical circuits operating as sary compo- shown on electrical schematic? nents Terms: VDC = DC Voltage T300, T300e Service Manual (10-2023)

  • Page 72: T300 Propel Subsystem (Option)

    Enabled Disabled Propel • Battery Charger ON Interlock • Fwd/Rev Throttle (Option) • Neutral - Ready State Command • PMC (Propel Motor • Fwd/Rev Switch Controller) Fault Input Battery Positive + Battery Negative - PMC021 T300, T300e Service Manual (10-2023)

  • Page 73: T300 Failed To Propel

    • Enable propel sary compo- • Test voltage applied to propel subsys- nents tem as shown on electrical schematic • Are electrical circuits operating as shown on electrical schematic? Terms: BDI = Battery Discharge Indicator T300, T300e Service Manual (10-2023)

  • Page 74: T300E Propel Subsystem (Option)

    Enabled Disabled Propel • Battery Charger ON Interlock • Fwd/Rev Throttle (Option) • Neutral - Ready State Command • PMC (Propel Motor • Fwd/Rev Switch Controller) Fault Input Battery Positive + Battery Negative - PMC021 T300, T300e Service Manual (10-2023)

  • Page 75: T300E Failed To Propel

    Enable forward propel sary compo- • Test voltage applied to propel subsys- nents tem as shown on electrical schematic • Are electrical circuits operating as shown on electrical schematic? Terms: BDI = Battery Discharge Indicator T300, T300e Service Manual (10-2023)

  • Page 76: T300 Scrub Motor On

    Foot Pedal Battery Positive + Motor released on non-propel • Fwd/Rev Throttle models. Command or Bail Battery Negative - • Low Battery Voltage Activated on non- • Fault Propel models. • Battery Charger ON Interlock PMC011 T300, T300e Service Manual (10-2023)

  • Page 77: T300 Scrub Motor Failed To Turn On

    TROUBLESHOOTING T300 SCRUB MOTOR FAILED TO TURN ON Step Action Value(s) • Key On See FAULT/ Proceed to • Enable scrub motor ERROR CODES Step 2 Is there a flashing BDI fault or LCD Pro- • in TROUBLE- Panel (option) fault code present? SHOOTING •...

  • Page 78: T300E Scrub Motor On

    • Neutral - Ready State or Bail released on non-propel Motor • Fwd/Rev Throttle Battery Positive + Command or Bail models. Activated on non- • Low Battery Voltage Battery Negative - • Fault Propel models. • Battery Charger ON Interlock PMC021 T300, T300e Service Manual (10-2023)

  • Page 79: T300E Scrub Motor Failed To Turn On

    Test voltage applied to scrub motor and repair or subsystem as shown on electrical replace neces- schematic sary compo- • Are electrical circuits operating as nents shown on electrical schematic? Terms: BDI = Battery Discharge Indicator T300, T300e Service Manual (10-2023)

  • Page 80: Scrub Head Lift Actuator (Option)

    • Head Raised - Foot Pedal • Head Lowered - Foot Lift • Low Battery Voltage Pedal Battery Positive + Actuator • Load Current Fault • Battery Charger ON Interlock (Option) Battery Negative - PMC011 T300, T300e Service Manual (10-2023)

  • Page 81: Scrub Head Failed To Raise/Lower

    Test voltage applied to actuator subsys- and repair or tem as shown on electrical schematic replace neces- • Are electrical circuits operating as sary compo- shown on electrical schematic? nents Terms: BDI = Battery Discharge Indicator T300, T300e Service Manual (10-2023)

  • Page 82: T300 Vacuum Fan On

    Approx. 11 Volts Quiet Mode Operational Matrix: Enabled Disabled • Squeegee Raised • Squeegee Lowered Vacuum Fan • Low Battery Voltage Battery Positive + • Fault • Battery Charger ON Interlock Battery Negative - PMC011 T300, T300e Service Manual (10-2023)

  • Page 83: T300 Vacuum Fan Failed To Turn On

    TROUBLESHOOTING T300 VACUUM FAN FAILED TO TURN ON Step Action Value(s) • Key On See FAULT/ Proceed to • Enable vacuum fan ERROR CODES Step 2 Is there a flashing BDI fault or LCD • in TROUBLE- Pro-Panel (option) fault code present? SHOOTING •...

  • Page 84: T300E Vacuum Fan On

    (Closed= Down) 38/GRY 3/ORA Vacuum Fan Motor CB6 (20A) 15/GRN 29/WHT 13/BLK Operational Matrix: Enabled Disabled • Squeegee Raised • Squeegee Lowered Vacuum Fan • Battery Charger ON Interlock Battery Positive + Battery Negative - PMC021 T300, T300e Service Manual (10-2023)

  • Page 85: T300E Vacuum Fan Failed To Turn On

    Test voltage applied to vacuum fan sub- and repair or system as shown on electrical schematic replace neces- • Are electrical circuits operating as sary compo- shown on electrical schematic? nents Terms: BDI = Battery Discharge Indicator T300, T300e Service Manual (10-2023)

  • Page 86: T300 Solution Control On (Conventional)

    • Solution Control ON released on non-propel models. • Fwd/Rev Throttle (Conventional) Battery Negative - Command or Bail • Low Battery Voltage activated on non- • Fault • Battery Charger ON Interlock propel models. PMC011 T300, T300e Service Manual (10-2023)

  • Page 87: T300 Solution Control Failed To Turn On (Conventional)

    TROUBLESHOOTING T300 SOLUTION CONTROL FAILED TO TURN ON (CONVENTIONAL) Step Action Value(s) • Key On See FAULT/ Proceed to • Enable solution control (conventional) ERROR CODES Step 2 Is there a flashing BDI fault or LCD Pro- • in TROUBLE-...

  • Page 88: T300E Solution Control On (Conventional)

    • Neutral - Ready State or bail Battery Positive + • Fwd/Rev Throttle released on non-propel models. (Conventional) • Low Battery Voltage Command or Bail Battery Negative - activated on non- • Fault propel models. • Battery Charger ON Interlock PMC021 T300, T300e Service Manual (10-2023)

  • Page 89: T300E Solution Control Failed To Turn On (Conventional)

    Test voltage applied to the solution con- repair or replace trol (conventional) subsystem as shown necessary com- on electrical schematic ponents • Are electrical circuits operating as shown on electrical schematic? Terms: BDI = Battery Discharge Indicator T300, T300e Service Manual (10-2023)

  • Page 90: T300 Solution Control On (Ec-H2O)

    TROUBLESHOOTING T300 SOLUTION CONTROL ON (ec-H2O) J7-3 Interface Module 2/BRN ec-H2O Mode Switch 13/BLK ec-H2O Relay 6/BLU 13/BLK 13/BLK GND J12-5 66/BLU J12-13 WCM PUMP GND J12-6 J12-14 WCM 13/BLK PUMP 67/PUR Water Conditioning Module Pump J12-11 VCC_1 J12-12 VCC_2 46/BLU N.C.

  • Page 91: T300 Solution Control Failed To Turn On (Ec-H2O)

    TROUBLESHOOTING T300 SOLUTION CONTROL FAILED TO TURN ON (ec-H2O) Step Action Value(s) • Key On See FAULT/ Proceed to • Enable solution control (ec-H2O) ERROR CODES Step 2 Is there a flashing BDI, ec-H2O fault or • in TROUBLE- LCD Pro-Panel (option) fault code pres-...

  • Page 92: T300E Solution Control On (Ec-H2O)

    • Fwd/Rev Throttle Battery Positive + bail released on Command or Bail activated non-propel models. on non-propel models. Battery Negative - • Low Battery Voltage • ecH2O System Fault • Battery Charger ON ECC001 Interlock T300, T300e Service Manual (10-2023)

  • Page 93: T300E Solution Control Failed To Turn On (Ec-H2O)

    Test voltage applied to solution control and repair or (ec-H2O) subsystem as shown on electri- replace neces- cal schematic sary compo- • Are electrical circuits operating as shown nents on electrical schematic? Terms: BDI = Battery Discharge Indicator T300, T300e Service Manual (10-2023)

  • Page 94: T300 Se (Severe Environment) On

    TROUBLESHOOTING T300 SE (SEVERE ENVIRONMENT) ON 6/BLU J8-7 (KEY SWITCH INTERLOCK) Detergent Tank level Sw. 32/BRN SV 1 LEVEL ON TIME % PERIOD 2.5 SEC INPUT 0 (Open = Empty) J4-4 O (No LEDs) 0 S On/ 2.5 S O Low (1 LED) 0.6 S On/ 1.9 S O...

  • Page 95: T300 Se (Severe Environment) Failed To Turn On

    TROUBLESHOOTING T300 SE (SEVERE ENVIRONMENT) FAILED TO TURN ON Step Action Value(s) • Key On See FAULT/ Proceed to • Enable SE (Severe Environment) deter- ERROR CODES Step 2 gent pump in TROUBLE- Is there a flashing BDI fault or LCD Pro- •...

  • Page 96: Sun-I/O Circuit Board Testing (Universal Schematic)

    P1-4 means plug number 1, pin number 4. Use this information to locate and identify proper wires per the actual electrical schematic. N = Negative (-) I = Inputs O = Outputs Battery Positive + Battery Negative - PMC021 T300, T300e Service Manual (10-2023)

  • Page 97: Sun-I/O Circuit Board Testing Procedure

    Negative 2 An open circuit has infinite resistance “O.L.”. (-) indicates battery negative (ground) as part of A shorted circuit has “0” resistance. Always test power supply to circuit board. through entire circuit. T300, T300e Service Manual (10-2023)

  • Page 98: Can (Controller Area Network) Open Network Issues

    1. Turn off machine. 2. Locate a CAN node location on the machine. 3. Carefully push probes into back of connector containing the CAN wires. 4. Since network remains connected in this mode, resistance should measure approximately 61Ω. T300, T300e Service Manual (10-2023)

  • Page 99: Check Node (Module) Resistance

    CHECK WIRE CONTINUITY TO NODE A check can be made between two points on the harness verifying continuity of the wire harness. Check the yellow to yellow connections and the green to green. T300, T300e Service Manual (10-2023)

  • Page 100: Machine Node Table

    Machine Nodes model Master/ Master Slave Slave Optional Standard Standard Standard Standard Standard Standard Optional Optional Optional Optional Nodes T300 User Scrub Charger ec-H2O Interface Controller T300e/ User Charger ec-H2O SS300 Interface T300, T300e Service Manual (10-2023)
  • Page 101 TROUBLESHOOTING T300, T300e Service Manual (10-2023)

  • Page 102: Service

    • Machine Control Module (T300-only option): Located at the rear of the battery compartment beneath a cover. • IRIS Module (T300-only option): Attached to the machine control module as an assembly. • i-Drive Propel Module (option): Located above the rear squeegee assembly at the rear of the scrubber.
  • Page 103 7. The programming process begins and all of the control modules are updated (if applicable). 4. The Service Diagnostics tool now connects to the control module network. T300, T300e Service Manual (10-2023)
  • Page 104 OK button and then cycle the key switch to allow programming to continue. Do not interrupt process unless prompted to do so. 9. Cycle the key switch to save selections after Machine Setup Complete appears on the screen. T300, T300e Service Manual (10-2023)

  • Page 105: Update The Machine Firmware

    Authorized service providers can download the Service Diagnostics software. Factory-Direct Tennant Service personnel have this software installed on their ServiceLink devices. A USB cable connects from the service device to an external port on the control console. The SERVICE DIAGNOSTICS TOOL configures up to five control modules depending on options.
  • Page 106 The firmware updates are complete when there is no longer a yellow highlight surrounding the Firmware button. A prompt box to “Press OK, the Key cycle machine” will appear on the screen. T300, T300e Service Manual (10-2023)
  • Page 107 10. Refer to the PDF notes to confirm the firmware updates and fixes to the machine. 11. Cycle the key switch to save changes. 12. Click on the Main Menu button to return to the Main Menu. T300, T300e Service Manual (10-2023)

  • Page 108: Program The I-Drive Module (Option)

    Authorized service providers can download the Service Diagnostics software. Factory-Direct Tennant Service personnel have this software installed on their ServiceLink devices. A USB cable connects from the service device to an external port on the control console (USB to mini USB adapter cable required).
  • Page 109 Wait for configuration...to complete. 11. Validating Complete!! appears on the screen 8. Writing Complete!! appears on the screen when when validation is complete. programming factory defaults is complete. 12. Cycle the key switch to save changes. T300, T300e Service Manual (10-2023)

  • Page 110: Reconfigure The Machine After New Hardware/Option Installation

    Authorized service providers can download the Service Diagnostics software. Factory-Direct Tennant Service personnel have this software installed on their ServiceLink devices. 3. Double click the Service Diagnostics desktop A USB cable connects from the service device to...
  • Page 111 8. Click on Advanced in the menu located on the left side of the screen. A password box will appear on the screen. If not reconfiguring the machine, click the Main Menu button to return to the Main Menu. T300, T300e Service Manual (10-2023)
  • Page 112 SERVICE If not reconfiguring the machine and No was 9. Enter the password into the password box and click the OK button. Contact T.A.C. (Tennant selected, click the Main Menu button to return to Assistance Center) for required password. the Main Menu.

  • Page 113: Access Support Documentation

    Authorized service providers can download the Service Diagnostics software. Factory-Direct Tennant Service personnel have this software installed on their ServiceLink devices. A USB cable connects from the service device to 4. Click on the Documentation button to display a an external port on the control console (USB to list of support documentation.
  • Page 114 Click on the Tech Doc Start Page button to machine Parts Manual. access the Technical Publications Start Page. Click on the Service Manual button to access the 6. Click on the Main Menu button to return to the machine Service Manual Main Menu. T300, T300e Service Manual (10-2023)

  • Page 115: Display Fault Codes On Service Device

    Service Diagnostics, and relaunch Service Tennant portal by visiting www.tennantco.com. Diagnostics. Factory-Direct Tennant Service has this software installed on their ServiceLink devices. A USB cable connects from the service device to an external port on the control console. The SERVICE DIAGNOSTICS TOOL configures up to five control modules depending on options.

  • Page 116: Changing Off-Board Battery Charger Settings

    3. Press the middle button to activate the battery type options (algorithms). The left LED will turn 7. Press the middle button to save the new settings. red. The screen will display “PROGRAMMING PARAMETERS SAVED”. TURNS T300, T300e Service Manual (10-2023)

  • Page 117: Battery Charger Operation

    Maintenance-free batteries can become damaged from an equalization charge, which is why it is important to make sure the Tennant-specified charger is programmed for the battery being used. See BATTERY CHARGER SETTINGS. Maintenance-free batteries, such as AGM and Gel, use slightly lower finish voltages (approximately 31 Volts) to keep the batteries from outgassing.

  • Page 118: Chassis

    Swivel Micro caster switch Wheel (S/N 10000000 - 10887016) Transaxle Front frame carbon brush kit 24 VDC transaxle Axle motor mounting adapter Axle mounting adapter Transaxle joint Wheel 24 VDC electric transaxle Transaxle joint T300, T300e Service Manual (10-2023)

  • Page 119: Remove The Transaxle Assembly

    Use a non- access the left side wheel. conductive battery removal device. 5. Remove rear squeegee assembly from the machine. T300, T300e Service Manual (10-2023)
  • Page 120 SERVICE 9. Remove transaxle mounting hardware 10. If replacing the drive motor carbon brushes, see REMOVE/INSPECT/INSTALL THE DRIVE MOTOR CARBON BRUSHES (PROPEL MACHINES ONLY). 11. Assemble/reinstall transaxel assembly in reverse order of disassembly. T300, T300e Service Manual (10-2023)

  • Page 121: Remove/Inspect/Install The Drive Motor Carbon Brushes (Propel Machines Only)

    7. Repeat procedure to inspect/replace the remaining carbon brushes. 8. Reinstall the drive motor onto the transaxle assembly in reverse order of disassembly. 9. Reinstall the transaxle assembly onto the machine. See REMOVE/INSTALL THE TRANSAXLE ASSEMBLY (PROPEL MACHINES ONLY). T300, T300e Service Manual (10-2023)

  • Page 122: Remove/Install The Swivel Caster

    8. Remove the swivel caster from the machine. assistance when lifting batteries. Use a non- conductive battery removal device. 9. Reinstall removed swivel caster/new swivel casters in reverse order of disassembly 5. Remove rear squeegee assembly from the machine. T300, T300e Service Manual (10-2023)

  • Page 123: Frame Group-Push Model

    Latch lift Swivel switch bracket caster Replaced By 1225500 (S/N 10000000 - 10887016) Front frame Wheel Axle axle mounting Wheel Axle adapter mounting adapter Axle Wheel grommet Latch lift bracket Replaced Axle By 1225500 grommet T300, T300e Service Manual (10-2023)

  • Page 124: Solution Systems

    1. Completely empty the recovery tank. 2. Turn the key switch OFF. 3. Disconnect the battery cable from the machine. FOR SAFETY: When servicing machine, Disconnect battery connection and charger cord before working on machine. T300, T300e Service Manual (10-2023)
  • Page 125 REPLACE VACUUM FAN CARBON BRUSHES. 9. Install new vacuum fan assembly/reinstall the removed vacuum fan assembly in the reverse order of disassembly. 6. Remove vacuum fan mounting hardware. 7. Remove vacuum fan from the recovery tank. T300, T300e Service Manual (10-2023)

  • Page 126: Remove/Inspect/Replace Vacuum Fan Carbon Brushes

    3. Lift up to release and remove carbon brushes. 6. Reinstall the removed vacuum fan brushes/install the new vacuum fan brushes in reverse order of disassembly. 7. Reinstall the vacuum fan onto the machine. See REMOVE/INSTALL THE VACUUM FAN. T300, T300e Service Manual (10-2023)

  • Page 127: Remove/Replace The Recovery Tank

    Vibration Hinge mount isolators weldment (Qty. 3) Inductor 24 VDC Hinge mount vacuum fan weldment Recovery tank Vacuum fan exhaust muffler Adhesive gasket Hinge doubler plate Hinge Vacuum inlet cover Hinge Vacuum fan mount T300, T300e Service Manual (10-2023)
  • Page 128 FOR SAFETY: When servicing machine, remove key, and set parking brake if equipped. Disconnect battery connection and charger cord before working on machine. 1. Completely empty the recovery tank. 2. Turn the key switch OFF. T300, T300e Service Manual (10-2023)
  • Page 129 9. Remove the recovery tank from the machine. 10. Assemble components onto the removed/ replaced recovery tank in reverse order of disassembly. 11. Install the recovery tank onto the machine in reverse order of disassembly. T300, T300e Service Manual (10-2023)

  • Page 130: Remove The Water Solenoid Valve (T300E Shown)

    From: 0.8 in. Solution compression tank spring Valve knob Solution valve mounting bracket Clear PVC hose Inline filter 24 vdc water Clear PVC solenoid valve hose From: Solution tank Site tube To: Scrub head T300, T300e Service Manual (10-2023)
  • Page 131 6. Place a protective blanket next to the left side of the machine. 7. Carefully lower machine onto the left side onto the protective blanket. T300, T300e Service Manual (10-2023)
  • Page 132 SERVICE 11. Disconnect the solution connectors from the water solenoid. See DISCONNECT HOSES FROM PTC (PUSH-TO-CONNECT) FITTINGS. 12. Install the new water solenoid onto the machine in reverse order of disassembly. T300, T300e Service Manual (10-2023)

  • Page 133: Adjust The Water Solenoid (T300E Only)

    1. Loosen set screws and remove knob from water solenoid. 4. Add water to the solution tank. 2. Disconnect the solution connectors from the water solenoid. See DISCONNECT HOSES FROM PTC (PUSH-TO-CONNECT) FITTINGS. T300, T300e Service Manual (10-2023)
  • Page 134 Adjustment is complete. 7. Slowly turn the valve stem clockwise until water flow stops. Stop immediately when water flow stops. This is the no-flow or clockwise knob setting. T300, T300e Service Manual (10-2023)

  • Page 135: Replace The Solution Tank

    FOR SAFETY: When servicing machine, Disconnect battery connection and charger cord 6. Remove the rear squeegee assembly from the before working on machine. machine. 4. Lift the recovery tank completely open. T300, T300e Service Manual (10-2023)
  • Page 136 NOTE: Do Not allow the machine to drop when tipping it onto the blanket/cardboard. Components could be damaged if machine is allowed to drop. 14. Carefully tip the machine onto the blanket/ cardboard. T300, T300e Service Manual (10-2023)

  • Page 137: Connect Hoses To Ptc (Push-To-Connect) Fittings

    4. Pull on the fitting to ensure the hose connection is secure. 5. Test the fitting/hose connections for leaks prior to leaving the site. T300, T300e Service Manual (10-2023)

  • Page 138: Disconnect Hoses From Ptc (Push-To-Connect) Fittings

    Continue to hold the collet held in against the fitting and pull the hose from the fitting. NOTE: Be sure there is no pressure in the system and the system is empty before disconnecting hose(s) from the fitting. T300, T300e Service Manual (10-2023)

  • Page 139: Scrubbing Systems

    Head lift bracket Roller Journal 0.5 in. bearings sleeves 0.5 in. sleeves 0.5 in. Electric sleeve harness Tall head Journal mounting bearings bracket Short head 0.5 in. mounting sleeve bracket Dual disk scrub head assembly T300, T300e Service Manual (10-2023)

  • Page 140: Single Disk Scrub Head Lift Group

    Head spacer bearings (push model) 0.5 in. sleeve Short head mounting (S/N 10000000 - 10499416) bracket 0.5 in. sleeves Compression Tall head mounting spring bracket (push model) Single disk scrub head assembly Head spacer (push model) T300, T300e Service Manual (10-2023)

  • Page 141: Cylindrical Scrub Head Lift Group

    Head lift (S/N 10000000 - 10778393) bracket Head lift Journal roller bearings 0.5 in. sleeves Compression spring Compression spring Journal bearings Electric 0.5 in. harness sleeve Short head mounting bracket Cylindrical scrub head assembly T300, T300e Service Manual (10-2023)

  • Page 142: Orbital Scrub Head Lift Group

    2.9 in. bracket extension spring 0.5 in. sleeves 0.5 in. sleeve Journal bearings 0.5 in. sleeves Roller Short orbital head mounting bracket Tall orbital Journal head mounting bearings bracket 0.5 in. sleeve Orbital scrub head assembly T300, T300e Service Manual (10-2023)

  • Page 143: Remove/Reinstall The Scrub Head

    (cylindrical only). cover to the machine. 5. Remove scrub brushes from the scrub head. 8. Pull forward to remove the scrub head cover from the machine. 9. Disconnect the main wire harness connections from the motor. T300, T300e Service Manual (10-2023)
  • Page 144 13. Cylindrical Head Option Only: There are required brush pattern adjustments on the cylindrical scrub head. See CHECK/ADJUST THE CYLINDRICAL SCRUB BRUSH PATTERN. 14. Reinstall the scrub head cover onto the machine. T300, T300e Service Manual (10-2023)

  • Page 145: Remove/Replace The Brush Belt (Cylindrical Scrub Head Model)

    Idler plug shafts 24 VDC electric motor Grooved motor sheave Belt installation tool Grooved idler sheave Ball bearings Motor bracket Belt cover Grooved drive sheave Motor belt Smooth drive Floating sheave side skirt Skirt cover T300, T300e Service Manual (10-2023)
  • Page 146 13. Reinstall the brushes into the scrub head. 7. If replacing the scrub motor, proceed to REMOVE/REPLACE THE BRUSH MOTOR 14. Reinstall the debris tray into the scrub head. (CYLINDRICAL SCRUB HEAD MODEL). If replacing the belt, proceed to the following step. T300, T300e Service Manual (10-2023)

  • Page 147: Remove/Replace The Brush Motor (Cylindrical Scrub Head Model)

    Plastic PVC hose straight Plastic elbow fitting fitting Plastic straight fitting Motor Plastic elbow PVC hose bracket fitting Plastic straight fitting Plastic t-fitting PVC hose Plastic elbow fitting Brush panel Debris tray Debris tray bracket T300, T300e Service Manual (10-2023)
  • Page 148 7. Remove the belt cover from the scrub head. 8. Remove drive belt from the scrub head. See REMOVE/REPLACE THE BRUSH BELT (CYLINDRICAL SCRUB HEAD MODEL). 9. Disconnect the main wire harness from the brush motor. T300, T300e Service Manual (10-2023)

  • Page 149: Replace The Cylindrical Brush Motor Carbon Brushes

    MODEL). 4. Remove the pan screw securing the carbon brush wire to the cylindrical brush motor, remove the spring securing the carbon brush inside the motor, and remove the carbon brush assembly from the motor. T300, T300e Service Manual (10-2023)

  • Page 150: Check/Adjust The Cylindrical Scrub Brush Pattern

    3. Disconnect the main wire harness from the transaxle motor. NOTE: This must be done to keep the machine stationary during the brush pattern test. 6. Set parking brake (if equipped). T300, T300e Service Manual (10-2023)
  • Page 151 Inspect the clockwise to decrease down pressure on the right brush pattern. The pattern shown below has a side of the scrub brushes. severe taper and requires adjustment to achieve two parallel rectangles. T300, T300e Service Manual (10-2023)
  • Page 152 Tighten the top hex nut. 14. Tighten the top bolt and perform a final pattern check. Adjustment is complete. 15. Reinstall the scrub head cover onto the machine. T300, T300e Service Manual (10-2023)

  • Page 153: Dual Scrub Brush Head Assembly

    15 mm square key Water distribution manifold Belt guide bracket Head housing Pad plunger button Compression spring Pad plunger button Compression spring Splash guard bracket Stop pin Stop pin Bristle skirt head bumper T300, T300e Service Manual (10-2023)

  • Page 154: Remove/Install The Dual Scrub Head Motor Carbon Brushes

    5. Remove the screw securing the carbon brush to 9. Reinstall the removed carbon brushes/install the the motor. new carbon brushes into the brush motor in the reverse order of disassembly. 10. Reinstall the scrub head cover onto the machine. T300, T300e Service Manual (10-2023)
  • Page 155 SERVICE T300, T300e Service Manual (10-2023)

  • Page 156: Replace The Brush Motor Belt (Dual Disk Model)

    Ball bearing Drive hub spacer release Shaft spring clip spacer Drive hub release stop plate Flat Double end studs drive hub Ball bearing Ball bearings Shaft spacer Idler pulleys Idler bearing spacers T300, T300e Service Manual (10-2023)
  • Page 157 5. Install the new belt into the scrub head. Note belt routing below. 7. Reinstall the splash guard bracket onto the scrub head. 8. Reinstall the scrub head onto the machine. See REMOVE/REINSTALL THE SCRUB HEAD. T300, T300e Service Manual (10-2023)

  • Page 158: Orbital Scrub Head Assembly

    24 VDC Neopren isolators electric isolators Electric motor harness Scubber deck PVC hose (12 in.) Rubber wheel Plastic straight Eccentric fitting balance Water Rubber distribution wheel Pad driver manifold face Pad driver plate Neopren isolators T300, T300e Service Manual (10-2023)

  • Page 159: Remove/Install The Orbital Scrub Head Motor Carbon Brushes

    5. Remove the screw securing the carbon brush to 9. Reinstall the removed carbon brushes/install the the motor. new carbon brushes into the brush motor in the reverse order of disassembly. 10. Reinstall the scrub head cover onto the machine. T300, T300e Service Manual (10-2023)

  • Page 160: Replace The Lower Orbital Head Isolators

    3. Place the head upside down and remove the pads. 6. Remove the lower plate and the lower isolators. 4. Remove the hardware securing the lower plate to the lower isolators. T300, T300e Service Manual (10-2023)
  • Page 161 Torque the set screw to 15 ft-lbs (20 Nm). 30 lbs. Set Screw 9. Reinstall the scrub head assembly onto the machine. See REMOVE/REINSTALL THE SCRUB HEAD. T300, T300e Service Manual (10-2023)

  • Page 162: Remove/Install/Replace The Orbital Scrub Head Eccentric Drive Assembly

    6. Remove the orbital eccentric drive assembly 2. Turn the key switch OFF. from the motor. Do not lose the square key when 3. Remove the scrub pad from the machine. removing the orbital eccentric drive assembly from the motor. T300, T300e Service Manual (10-2023)
  • Page 163 Eccentric 12. Reinstall the scrub pad onto the machine. step balance Eccentric spacer Outer bearing retainer plate Ball bearing Outer bearing housing Inner bearing retainer O-ring seal T300, T300e Service Manual (10-2023)

  • Page 164: Replace The Down Pressure Actuator (Option)

    3. Disconnect the battery cable from the machine. switch. FOR SAFETY: When servicing machine, 7. Remove the entire squeegee lift group squeegee disconnect battery connection and charger cord mounting bracket from the rear frame weldment. before working on machine. T300, T300e Service Manual (10-2023)
  • Page 165 6.5 in. extension spring Down pressure pulley mounting bracket Nylon cable pulley Down pressure cable Front frame weldment Actuator mounting weldment Rear frame weldment Wire tie securing actuator to actuator mounting weldment 24 VDC actuator T300, T300e Service Manual (10-2023)
  • Page 166 12. Use cotter pin/clevis pin to install the new actuator onto the actuator mounting weldment. 13. Use cotter pin/clevis pin to connect the down pressure cable to the actuator. 14. Use a cable tie to secure the actuator to the actuator mounting weldment. T300, T300e Service Manual (10-2023)

  • Page 167: Manual Down Pressure Group

    0.2 in. Ball knob sleeve Manual down pressure lever Link plate 0.7 in. compression spring 0.5 in. sleeve 6.5 in. extension spring Down pressure lever cover Manual down pressure bracket Scrub head raise/lower pedal Solution tank T300, T300e Service Manual (10-2023)

  • Page 168: Control Modules/Controls/Electrical

    Circuit board standoffs (Qty. 5) Circuit board thermal pad 125-Amp bus bar Circuit board cover gasket Main circuit board Speed controller (propel model) Insulator standoffs (Qty. 2) Circuit board heatsink Drive bracket (propel model) PVC molding T300, T300e Service Manual (10-2023)

  • Page 169: Remove The Machine Control Module (Option)

    NOTE: Be careful not to damage the IRIS antenna conductive battery removal device. (option) when lowering the assembly. 5. Cut zip ties securing hoses and wire harnesses to cover. 8. Disconnect all electrical connections from the machine control module assembly. T300, T300e Service Manual (10-2023)

  • Page 170: Replace The I-Drive Module (Option)

    4. Carefully lower the console cover. Do Not break any wire/harness connections when lowering the console cover. 11. Install control module onto machine in reverse order of disassembly. NOTE: The torque specification for control module electrical cables is 52 in-lbs (6 Nm). T300, T300e Service Manual (10-2023)
  • Page 171 11. Reinstall the console cover onto the machine. 12. Reconnect the battery cable to the machine. 13. Reconfigure machine for new i-Drive. The new i-Drive module must be programmed prior to machine operation. See SERVICE DIAGNOSTICS TOOL. T300, T300e Service Manual (10-2023)

  • Page 172: Remove The Onboard Battery Charger (Option)

    Compression Charger spring Cord hooks 24 VDC cover (Qty. 2) Control battery column charger frame Anderson connector Power cable Anderson connector Charger harness Anderson connector is the registered trademark of Anderson Power Products Inc T300, T300e Service Manual (10-2023)
  • Page 173 3. Remove the hardware securing the lower console cover to the machine. 6. Remove the battery charger from the control column frame. 4. Carefully lower the console cover. Do Not break any wire/harness connections when lowering the console cover. T300, T300e Service Manual (10-2023)
  • Page 174 Panel can be configured through the touch panel. All other models must be configured using separate con- figuration software via a mini-USB programming port on the back of the operator console. See SERVICE DIAGNOSTICS TOOL. T300, T300e Service Manual (10-2023)

  • Page 175: Remove The Interface Module

    6. Remove the hardware securing the control panel top housing to the machine. 4. Remove the hardware securing the access cover to the machine. 7. Carefully separate the control panel top housing from the machine. T300, T300e Service Manual (10-2023)
  • Page 176 8. Disconnect electrical connections and remove interface module. 9. Install the interface module onto the machine in reverse order of disassembly. 10. The new interface module must be programmed to operate in the Scrubber. See SERVICE DIAGNOSTICS TOOL. T300, T300e Service Manual (10-2023)

  • Page 177: Disassemble/Assemble The Control Handle Assembly

    Bail return spring (propel model) USB cable Speed range dial Control handle (propel model) bottom housing Closed rubber adhesive seal Bail Bail handle shaft handle Closed rubber adhesive seal Control handle cover Control column frame T300, T300e Service Manual (10-2023)
  • Page 178 6. Carefully separate the control panel top housing from the machine. 4. Carefully lower access cover. 7. If replacing/removing the speed range potentiometer, see REMOVE/INSTALL THE SPEED RANGE POTENTIOMETER. 8. If replacing/removing the direction switch, see REMOVE/INSTALL THE DIRECTION SWITCH. T300, T300e Service Manual (10-2023)
  • Page 179 15. Remove the bail handle from the bottom control 11. Disconnect the main wire harness connections housing. from the circuit board located behind the control panel. 12. Disconnect the main wire harness from the speed control potentiometer and the direction switch. T300, T300e Service Manual (10-2023)
  • Page 180 17. Separate the top control panel housing from the bottom control panel housing. 18. If replacing/removing the bail switch, see REMOVE/INSTALL THE BAIL SWITCH. 19. Reassemble the control handle assembly in reverse of disassembly. T300, T300e Service Manual (10-2023)

  • Page 181: Remove/Install The Speed Range Potentiometer

    3. Disconnect the main wire harness from the speed range potentiometer. 6. Reinstall speed range potentiometer and reassemble the control handle assembly in reverse order of disassembly if only replacing the speed range potentiometer. T300, T300e Service Manual (10-2023)

  • Page 182: Remove/Install The Direction Switch

    2. Disconnect the main wire harness from the direction switch. 3. Remove the knob from the direction switch. 5. Reinstall the direction switch and reassemble the control handle assembly in reverse order of disassembly if only replacing the direction switch. T300, T300e Service Manual (10-2023)

  • Page 183: Remove/Install The Bail Switch

    3. Replace/reinstall the bail switch and reassemble the control handle assembly in reverse order of disassembly. T300, T300e Service Manual (10-2023)

  • Page 184: Options

    Plastic straight Plastic fitting t-fitting Plastic elbow ec-H2O fitting Plastic module elbow Hoses fitting Plastic Plastic t-fitting straight Plastic fitting elbow fitting ec-H2O module Clear PVC mounting bracket hose Electric harness (Ground) Sleeve Solution tank T300, T300e Service Manual (10-2023)
  • Page 185 8. Remove the ec-H2O module/ec-H2O module mounting bracket from the machine. 9. If replacing/servicing the ec-H2O module, remove the ec-H2O module from the ec-H2O module mounting bracket. 10. If servicing/repairing the ec-H2O module, proceed to SERVICE THE ec-H2O NanoClean MODULE. T300, T300e Service Manual (10-2023)

  • Page 186: Service The Ec-H2O Nanoclean Module

    5-plate electrode ec-H2O upper module housing ec-H2O Rocker direction switch label Molded hose Clear PVC hose Heat sink plate ec-H2O circuit board assembly ec-H2O lower Heat sink module housing thermal pad ec-H2O controller gasket T300, T300e Service Manual (10-2023)
  • Page 187 5. Further disassemble the ec-H2O module as necessary to access/service/replace parts. 6. Reassemble the ec-H2O module in the reverse order of disassembly. 7. Reinstall the ec-H2O module onto the machine. See REMOVE/INSTALL THE ec-H2O MODULE (OPTION). T300, T300e Service Manual (10-2023)

  • Page 188: Replace The Ec-H2O Solution Pump (Option)

    1. Completely empty the solution tank and the recovery tank. 2. Turn the key switch OFF. 3. Disconnect the battery cable from the machine. FOR SAFETY: When servicing machine, Disconnect battery connection and charger cord before working on machine. T300, T300e Service Manual (10-2023)
  • Page 189 10. If tipping the machine: Place a protective blanket pump. next to the left side of the machine. 16. Install the new solution pump onto the rear frame. Tighten the cable clamp to secure the solution pump to the rear frame. T300, T300e Service Manual (10-2023)

  • Page 190: Replace The Water Solenoid Valve

    10. Install the water solenoid valve/solution valve solenoid valve. mounting bracket onto the rear frame. 11. Connect the main wire harness to the water solenoid valve. 12. Install the compression spring/knob onto the water solenoid valve. T300, T300e Service Manual (10-2023)
  • Page 191 SERVICE T300, T300e Service Manual (10-2023)

  • Page 192: Se (Severe Environment) Group (Option)

    Detergent pump mounting bracket Plastic elbow fitting cap Potentiometer 24 VDC detergent Vented Severe pump tank cap environment tank Clear PVC hose From: ec-H2O Plastic module t-fitting 30-watt liquid level To: Scrub sensor head Solution tank T300, T300e Service Manual (10-2023)

  • Page 193: Remove/Install The Severe Environment Detergent Metering Liquid Level Sensor

    6. Remove the hardware securing the detergent pump assembly to the solution tank. 18. Adjust the Severe Environment knob to the customer preferred setting. T300, T300e Service Manual (10-2023)
  • Page 194 9. Connect the liquid level sensor to main wire harness. 10. Reinstall the Severe Environment tank into the machine. 11. Reinstall the solution hose cap into the detergent metering tank. 6. Disconnect the main wire harness from the liquid level sensor. T300, T300e Service Manual (10-2023)
  • Page 195 SERVICE T300, T300e Service Manual (10-2023)

This manual is also suitable for:

T300e

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