Nobles Speed Scrub 300 Operator Manual

Introduction

This manual is furnished with each new model. It provides necessary operation and maintenance instructions.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​​​‍​​​‌​‍‍​⁠‌⁠⁠​⁠⁠‌​⁠‌​‌​​‌​‌⁠‍​​‌⁠

Read this manual completely and understand the machine before operating or servicing it.

This machine will provide excellent service. However, the best results will be obtained at minimum costs if:

• The machine is operated with reasonable care.
• The machine is maintained regularly - per the maintenance instructions provided.
• The machine is maintained with manufacturer supplied or equivalent parts.

To view, print or download manuals online visit www.tennantco.com/manuals

Protect the environment

Please dispose of packaging materials and used machine components such as batteries in an environmentally safe way according to your local waste disposal regulations. Always remember to recycle.

Intended use

The automatic floor scrubber is intended for commercial use, for example in hotels, schools, hospitals, factories, shops, offices and rental businesses. It is designed to scrub hard floor surfaces (concrete, tile, stone, synthetic, etc.) in an indoor environment. Do not use this machine on carpeted surfaces. Use only recommended pads/brushes and commercially available floor cleaning detergents. Do not use this machine other than described in this Operator Manual.

Machine data

Please fill out at time of installation for future reference.

Model No. -
Serial No. -
Installation Date -

Uncrating machine

Carefully check machine for signs of damage. Report damages at once to carrier. Contact distributor or Tennant for missing items.

To uncrate the machine, remove straps, wheel blocks and shipping brackets. Using the supplied ramp carefully back the machine off the pallet. Make sure scrub head is in the raised position.

Operation

• Important safety instructions (page 4)
• Safety labels (page 6)
• Machine components (page 7)
• Machine symbols (page 8)
• Control panel components (page 8)
• Installing batteries (page 9)
• Battery pack lift-out tray (option) (page 9)
• How the machine works (page 10)
• Brush and pad information (page 10)
• Machine setup (page 11)
• Attaching squeegee assembly (page 11)
• Installing brush/pad - 3 lug disk (page 11)
• Installing brush/pad - Insta-Click magnetic disk (option) (page 12)
• Installing pad - orbital (page 13)
• Installing cylindrical brushes (page 13)
• Filling solution tank (page 14)
• ec-H2O NanoClean water conditioning cartridge (ec-H2O model) (page 15)
• Accessory rails (page 15)
• Machine operation (page 16)
• Pre-operation check list (page 16)
• Operating machine (page 16)
• While operating machine (page 18)
• Emergency shut-off button (page 19)
• Battery discharge indicator (page 19)
• Circuit breaker panel (page 19)
• Hour meter (page 19)
• Draining tanks (page 20)
• Draining recovery tank (page 20)
• Draining solution tank (page 20)
• Service indicator codes (page 21)

Maintenance

• Maintenance chart (page 24)
• Machine maintenance (page 25)
• After daily use (page 25)
• After weekly use (page 26)
• After every 50 hours of use (page 27)
• After every 100 hours of use (page 27)
• Electric motors (page 27)
• Belts (page 28)
• Orbital scrub head isolators (page 28)
• Batteries (page 28)
• Maintenance-free batteries (page 28)
• Flooded (wet) lead-acid batteries (page 28)
• Checking connections / cleaning (page 29)
• Charging batteries (page 29)
• Battery charger settings (page 30)
• HydroLINK battery watering system (page 32)
• Squeegee blade replacement (page 33)
• ec-H2O NanoClean water conditioning cartridge replacement (page 34)
• Loading/unloading machine for transporting (page 35)
• Storing machine (page 35)
• Freeze protection (page 35)
• Troubleshooting (page 36)

Specifications

• General machine dimensions/capacities/performance (page 38)
• Machine dimensions (page 40)

1. Cup holder/tray
2. Recovery tank lid
3. Recovery tank
4. Solution tank fill-port
5. Solution tank
6. Scrub head
7. Battery compartment
8. Accessory rail(s)
9. On-board battery charger cord hooks
10. Scrub head lift pedal
11. Squeegee foot pad
12. Squeegee assembly
13. Control handle
14. Control handle start bail

15. Speed control knob (drive model)
16. Forward/Reverse lever (drive model)
17. Control panel display
18. Emergency stop button (option)
19. Hour meter
20. Key switch
21. ec-H2O on/off switch (option)
22. Off-board battery charger receptacle
23. Recovery tank drain hose
24. Solution tank level/drain hose
25. Parking brake (option)
26. Dual down pressure lever (option)
27. Solution flow control knob

Machine symbols

Symbol	Meaning
	Fast speed (drive model)
	Slow speed (drive model)
	Forward / Reverse (drive model)
	On
	Off
	ec-H2O scrubbing (option)
	Battery charge
	Do not lift by accessory rails
	No step
	Dual down pressure
	Parking brake (option)
	No detergent (ec-H2O option)
	Water temperature (ec-H2O option)
	Solution flow
	No solution flow
	Circuit breaker

Control panel components

1. Service indicator - Lights up when a machine or charger fault is detected.
2. Parking brake indicator (option) - Lights up when parking brake lever is engaged. To turn off indicator, disengage parking brake lever near left rear wheel.
3. Battery discharge indicator (BDI) - The battery discharge indicator serves two functions. In normal scrub mode it displays the charge level of the batteries. It also, in conjunction when the service indicator is flashing, provides specific LED codes when a machine or charger fault is detected.
4. ec-H2O indicator (Option) - Lights up blue when ec-H2O system is activated and operating normally.

Installing batteries

Battery specifications

Two 12 volt deep-cycle batteries.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​​‍‌​​​‌​‍‍​⁠‌‌‌‌‍⁠‌‍⁠‌​‌​⁠‍‍‌​‌‍‍⁠‌

Contact distributor or Tennant for battery recommendations.

1. Lift the recovery tank to access the battery compartment (Figure 1).

2. With adequate assistance, carefully install the batteries into the battery compartment. Arrange the batteries as shown (Figure 2).

3. Using the supplied battery post boots, connect the cables to the battery posts as shown (Figure 2). Connect the machine's black (-) battery cable last. Use insulated tools when working near batteries.

Battery pack lift-out tray (option)

Models equipped with the optional battery lift-out tray for quick or frequent battery pack exchange.

1. Disconnect the battery cable connection at machine (Figure 3).

2. Using an approved lift strap that supports the weight of battery pack, connect the strap to the two lift brackets as shown. Using a lift hoist rated to handle the weight of the battery pack, carefully lift the battery packs to and from machine. Keep one hand on the battery lift-out tray when lifting for stability (Figure 4).
   Before lifting battery pack, make sure the batteries are secured to the battery lift-out tray with the supplied battery strap as shown (Figure 4).

3. Reconnect the battery cable connection after installing battery pack.

How the machine works

Conventional scrubbing

When using the conventional scrubbing mode, water and detergent mixture from the solution tank flows to the floor and the rotating brush(es)/pad(s) scrub the floor clean. As the machine moves forward, the squeegee with vacuum suction picks up the dirty solution from the floor into the recovery tank.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​​‍‍​​​‌​‍‍​‍⁠⁠⁠‌‌⁠‌‍​‍‌‍⁠​​​⁠‌​‌⁠‍‌

ec-H2O NanoClean technology (option)

When using the ec-H2O NanoClean technology, normal water passes through a module where it is electrically converted into a cleaning solution. The electrically converted water attacks the dirt, allowing the machine to easily scrub away the suspended soil. The converted water then returns to normal water in the recovery tank.

Brush and pad information

For best cleaning results use the appropriate brush or pad for your cleaning application. Listed below are brushes and pads and the applications for which each is best suited.

NOTE: The amount and type of soilage play an important role in determining the type of brush or pad to use. Contact a Tennant representative for specific recommendations.

Soft nylon bristle scrub brush (White) - Recommended for cleaning coated floors without removing finish. Cleans without scuffing.

Polypropylene bristle scrub brush (Black) - This general purpose polypropylene bristle scrub brush is used for scrubbing lightly compacted soilage. This brush works well for maintaining concrete, wood and grouted tile floors.

Super abrasive bristle scrub brush (Gray) - Nylon fiber impregnated with abrasive grit to remove stains and soilage. Strong action on any surface. Performs well on buildup, grease, or tire marks.

Polishing pad (White) - Used to maintain highly polished or burnished floors.

Buffing pad (Red) - Used for light duty scrubbing without removing floor finish.

Scrubbing pad (Blue) - Used for medium to heavy-duty scrubbing. Removes dirt, spills, and scuffs and leaves surface clean ready for recoating.

Stripping pad (Brown) - Used for stripping of floor finish to prepare the floor for recoating.

Heavy duty stripping pad (Black) - Used for aggressive stripping of heavy finishes/sealers, or very heavy duty scrubbing.

Surface preparation pad (Maroon) - Used for very aggressive chemical free removal of floor finish to prepare the floor for re-coating

Machine setup

Attaching squeegee assembly

1. Lift the squeegee mount bracket to the raised position. Place toe under pedal to lift (Figure 5).

2. Mount the squeegee assembly to the squeegee mount bracket (Figure 6). Tighten knobs to secure squeegee assembly to bracket.

3. Connect the vacuum hose to the squeegee assembly (Figure 7).

Installing brush/pad - 3 lug disk

1. Step down on the scrub head lift pedal to raise the scrub head off the floor (Figure 8).

2. Attach the pad to the pad driver before installing the disk (Figure 9). Secure pad with centerlock.

3. Single disk model - Position the three lugs into the motor hub slots and give the pad driver/brush a quick counter-clockwise turn to engage hub (Figure 10). View through the scrub head window to align lugs.

Dual disk model - Turn the brush motor hub until the lug slot with spring clip is visible. Position the three lugs into the motor hub slots and give the pad driver/brush a quick turn towards the spring clip (Figure 11). View through the scrub head window to align lugs.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​​⁠​​​​‌​‍‍​⁠​‍⁠​⁠​⁠​‌‌‍‌⁠⁠‍‍‍‍‍‌⁠‌⁠

NOTE: The left and right disks engage the hubs in opposite directions.

4. Single disk model - To remove the pad driver/brush, press down on the plunger and turn the pad driver/brush clockwise (Figure 12).

Dual disk model - To remove the pad driver/brush, grip the disk and give it a quick turn in the direction as shown (Figure 13).

Installing brush/pad - Insta-Click magnetic disk (option)

1. Step down on the scrub head lift pedal to raise the scrub head off the floor (Figure 14).

2. Attach the pad to the pad driver before installing the driver (Figure 15). Secure pad with centerlock.

3. Place the pad driver/brush under the scrub head and lift into position. The Insta-Click pad driver/brush will automatically click into position (Figure 16).

4. To remove the pad driver(s)/brush(es), raise the scrub head and press the yellow plunger button with foot or hand (Figure 17). Pad will drop to floor.

Installing pad - orbital

For best cleaning performance and to avoid damaging the pad driver plate or floor surface, always use backer pad with work pads (Figure 18).‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​​⁠‌​​​‌​‍‍​‌​​‌‌⁠​‌‍‌‌‍​‌​‍‍‍‌⁠​‌⁠‍

1. Step down on the scrub head lift pedal to raise the scrub head off the floor (Figure 19).

2. Install the backer pad, retaining strips facing outward, to bottom of scrub head (Figure 20). Make sure pad is centered on scrub head.

3. Attach the work pad to the backer pad (Figure 21).

Installing cylindrical brushes

1. Step down on the scrub head lift pedal to raise the scrub head off the floor (Figure 22).

2. Remove the debris tray by sliding it out from the scrub head (Figure 23).

3. Remove the idler plate from the scrub head by unscrewing the yellow knob (Figure 24).

4. Slide the brushes into the scrub head and connect the slotted ends of each brush into the drive hubs (Figure 25).

5. Connect the idler plate to the brush ends and reattach the idler plate. Make sure the idler plate hooks are engaged before tightening knob (Figure 26).

6. Replace debris tray.

Filling solution tank

Remove the solution tank lid and fill the solution tank. Stop filling tank when the level reaches the "3/3" mark on the solution tank drain hose indicator (Figure 27).‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​​⁠‍​​​‌​‍‍​⁠​‌​‍‍‍​‌‍‍‍‌​‌‍‍‌‌‍​‍‍​

ec-H2O Scrubbing - Only use cool clean water (less than 70°F (21°C)). Do not use hot water or add conventional floor cleaning detergents. An ec-H2O system fault will occur if cleaning detergents are added.

Conventional Scrubbing - Use hot water (140°F (60°C) maximum). Pour a recommended cleaning detergent into the solution tank according to mixing instructions on the container.

NOTE: Do not use the ec-H2O system when there are conventional cleaning detergents in the solution tank. Drain, rinse, and refill the solution tank with clear cool water before operating the ec-H2O system.

The solution tank fill-port is equipped with two hose clips to hold hose while filling. The two clips are different hose diameter sizes (Figure 28).

ec-H2O NanoClean water conditioning cartridge (ec-H2O model)

The ec-H2O system is equipped with a water conditioning cartridge (Figure 29). The cartridge is designed to protect the machine's plumbing system from potential scaling.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​​⁠⁠​​​‌​‍‍​​‌‍‍​‌‌⁠‍⁠‌⁠​‍‍⁠‌‌‌⁠‌⁠⁠‌

The cartridge is required to be replaced when it reaches its maximum water usage or expiration time of when the cartridge was activated, which ever comes first.

Depending on machine usage a new cartridge can last anywhere from 12 to 24 months.

The control panel will signal a code when it's time to replace cartridge. See SERVICE INDICATOR CODES for further details.

All cartridges are labeled with a manufacture date. The shelf-life of an un-installed cartridge is one year from manufacture date. For new cartridge replacement, the ecH2O module timer must be reset. See ec-H2O NanoClean WATER CONDITIONING CARTRIDGE REPLACEMENT.

Accessory rails

The machine is equipped with one or two accessory rails which straddle the control console. The left side rail also serves as the recovery tank and solution tank drain hose holder.

The accessory rails are designed to store the squeegee assembly, spray bottles and other accessory items (Figure 30).

The J-hooks on the underside of the right side rail allow debris bag storage (Figure 31).

Accessory clips (option) - If model is equipped with the optional accessory clips, the clips easily clip on and off the rails for additional accessory storage (Figure 32).

To install the accessory clips, hook the clip over the rail and push downward until it snaps into position. To remove the accessory clip, reach under the clip and carefully pull the latch tab downward to release from rail. (Figure 33)‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‌​​​​​‌​‍‍​‍‌​⁠‌​‌​‌‍​​⁠‍​​​​‌‍‍‌⁠‌

The optional accessory clips allow for storage of wet floor signs, spray bottles, squeegee assembly, debris bags and other items (Figure 34).

Machine operation

Pre-operation check list

• Sweep area and remove any obstructions.
• Check brushes/pads for wear and damage.
• Check squeegee blades for wear and damage.
• Confirm recovery tank empty and screen and debris tray is clean.
• Check scrub head skirt for wear and damage.
• Cylindrical brush model - confirm scrub head debris tray is empty and clean.
• ec-H2O Scrubbing: Confirm solution tank is filled with clear cool water only.
• ec-H2O Scrubbing: Ensure all conventional cleaning agents/restorers are drained and rinsed from solution tank.
• Check machine for proper operation.

Operating machine

1. Release the parking brake lever, if equipped (Figure 35)
2. Turn the key to the on ( I ) position (Figure 35).

3. ec-H2O models - The ec-H2O system will automatically turn on at start up. To turn off the ec-H2O system, press the ec-H2O switch located below the key switch (Figure 36).

4. Lower the scrub head to the floor by stepping on the scrub head lift pedal as shown (Figure 37).

5. Lower the squeegee assembly to floor by stepping on foot pad as shown (Figure 38). To raise squeegee assembly, place toe under foot pad and lift. The vacuum motor will start when squeegee assembly is lowered.

6. Drive models - push the directional lever to the forward position to go forward (Figure 39). To reverse the machine pull the directional lever backwards.

7. To begin scrubbing, pull the start bail (Figure 40).

8. Drive models - Adjust the scrubbing speed by turning the speed dial to the desired speed (Figure 41).
   Push models - Slowly push the machine forward. The rotating brush(es) will help assist the machine forward.

9. To adjust the solution flow rate when ec-H2O scrubbing, press the solution flow button located on the ec-H2O module (Figure 42). One LED= low, two LED's=medium, and three LED's= high.

10. To adjust the solution flow rate when conventional scrubbing, turn the solution flow control knob located underneath machine (Figure 43).

NOTE: The solution flow control knob is only functional when conventional scrubbing.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‌​‍​​​‌​‍‍​​⁠​​‌‌​​​​‌‌‍‌​​⁠‌​​‍‍​‍

11. Speed Scrub 300 Option - When extra brush pressure is needed for heavily soiled areas lift the down pressure lever (Figure 44).

NOTE: Release the down pressure lever when raising scrub head.

12. To stop scrubbing, release the start bail and raise the scrub head and squeegee assembly off floor. Turn key off and set parking brake, if equipped.

Corrected an obvious misprint: "down pressure level" printed in the note after step 11 (now "lever", as in step 11 and on page 7).

While operating machine

1. Overlap each scrub path by 2 inches (5 cm).
2. Keep machine moving to prevent damage to floor finish.
3. Wipe squeegee blades with a cloth if blades leave streaks.
4. Avoid bumping the machine into posts and walls.

5. Pour a recommended foam control solution into the recovery tank if excessive foam appears.
   ATTENTION: Foam buildup will not activate the float shut-off screen, vacuum motor damage will result.
6. Use the double scrubbing method for heavily soiled areas. First scrub the area with the squeegee up, let solution set for 3-5 minutes, then scrub the area a second time with squeegee down.
7. Orbital Scrub Head Model - Use caution when working near the tile cove (Figure 45) and floor mounted fixtures such as pedestal sinks and other breakable items. Keep the metal scrub head edge away to avoid possible damage.

8. When leaving the machine unattended, remove the key and set the parking brake, if equipped.
9. Do not operate machine in areas where the ambient temperature is above 110°F (43°C) or below freezing 32°F (0°C).

Corrected an obvious misprint: the warning printed "materials materials" (now "materials", as in the warning on page 4).

Emergency shut-off button (drive models)

Push the emergency shut-off button in the event of an emergency (Figure 46). This red button shuts off all power to machine. To regain power, turn the button clockwise and restart the key.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‌​⁠​​​‌​‍‍​‌⁠‌⁠‌​‌⁠‍​​⁠⁠​⁠​​‌⁠​​⁠⁠‍

Only use this button in the event of an emergency. It is not intended for routine machine shutdown.

Battery discharge indicator

The battery discharge indicator (BDI) displays the charge level of the batteries while the machine is operating. When the batteries are fully charged, all five indicators are lit (Figure 47). When the discharge level reaches the red light, stop scrubbing and recharge the batteries. If the red light begins to flash, the scrubbing function will automatically shut off to protect the batteries from total discharge. Drive Model: The machine will still propel when the red light is flashing, this will allow user to transport machine to charging station.

Circuit breaker panel

The machine is equipped with resettable circuit breakers to protect the machine from a current overload. If a circuit breaker trips, disconnect the battery cable connection and reset the breaker by pressing the reset button after the breaker has cooled down. Reconnect the battery cable connection. If the circuit breaker does not reset or continues to trip contact service personnel.

The circuit breaker panel is located near the battery compartment and identified as described below (Figure 48).

Hour meter

The hour meter records the number of hours the machine has been operated. Use the hour meter to perform specific maintenance procedures and to record service history (Figure 49).

Draining tanks

Draining recovery tank

Drain and clean the recovery tank daily and between solution tank refills.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‌‌​​​​‌​‍‍​​‌‍‌​‍⁠‍‍‍​‍⁠‍⁠⁠⁠⁠‍‍​‌⁠‍

1. Transport the machine to drain area.
2. For models equipped with drain hose caps, hold the hose upward, remove cap then slowly lower hose to drain. For models equipped with flow control valve drain hose, lower hose and slowly open valve to drain (Figure 50).

NOTE: When using a bucket to drain the machine, do not use the same bucket to fill the solution tank.

3. Remove and clean the float shut-off screen (Figure 51).

4. Option - Remove the debris tray and empty (Figure 52).

5. Rinse out the recovery tank with clean water and wipe clean of any soil residue (Figure 53).

Draining solution tank

Drain the solution tank daily.

1. Transport the machine to drain area.

2. To drain remaining water from solution tank, pull the solution hose from the accessory rail (Figure 54).

Firmly reconnect the solution hose to accessory rail after draining tank.

3. Rinse out solution tank with clean water (Figure 55).

4. Remove the solution tank filter and clean screen after every 50 hours of use (Figure 56). Solution filter is located under machine at rear. Drain solution tank before removing filter.

Machine maintenance

To keep the machine in good working condition, simply perform the following maintenance procedures.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‌‍‌​​​‌​‍‍​‍⁠‌⁠⁠⁠⁠‍⁠⁠‍⁠‌⁠⁠‍⁠‌‌‌​‍‌‌

After daily use

1. Drain and rinse out the recovery tank (Figure 57). See DRAINING TANKS.

2. Option - Remove the debris tray and empty (Figure 58).

3. Remove and clean the float shut-off screen (Figure 59).

4. Drain and rinse out the solution tank (Figure 60).

5. Disk scrub head - Turn pad over or replace when worn (Figure 61).
   Orbital scrub head - Turn the work pad over or replace when worn (Figure 62).

6. Insta-Click pad driver/brushes - clean any debris buildup from hub connection area (Figure 63).

7. Wipe the squeegee blades clean. Inspect blades for wear and damage (Figure 64). Rotate blade if worn. See SQUEEGEE BLADE REPLACEMENT.

8. Check the scrub head skirt for wear or damage (Figure 65). Replace if worn or damaged.

9. Clean the outside surface of the machine with an all purpose cleaner and damp cloth (Figure 66).

10. Cylindrical scrub head - Remove and clean debris trough (Figure 67).

11. Charge batteries (Figure 68). See BATTERIES.

After weekly use

1. Check the electrolyte level in all batteries (Figure 69). See BATTERIES.

2. Remove the drip trap cover from the squeegee assembly and clean reservoir (Figure 70).

After every 50 hours of use

1. Remove the solution tank filter and clean screen (Figure 71). Turn the filter bowl counter-clockwise to remove. Make sure to drain solution tank before removing filter.

2. Cylindrical brushes - Rotate brushes from front to rear (Figure 72). Replace brushes when they no longer clean effectively.

3. Cylindrical scrub head - Remove debris buildup from underside of scrub head (Figure 73).

4. Inspect and clean the seal on the recovery tank lid (Figure 74). Replace seal if damaged.

After every 100 hours of use

If machine is equipped with the optional battery watering system, check the watering hoses and connections for damage and wear (Figure 75). Replace system if damaged.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‌‍⁠​​​‌​‍‍​​⁠⁠⁠⁠‌​‍‍⁠‍​‌‍⁠‍‌⁠‍​⁠‍⁠​

Electric motors

Replace motor carbon brushes as indicated. Contact trained personnel for carbon brush replacement.

Belts

Replace belts every 1250 hours. Contact trained personnel for belt replacement (Figure 76).‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‌⁠​​​​‌​‍‍​‍⁠‌‌‌​⁠⁠‌‌‌‍‌‍‌​‌⁠‍​​‍‌⁠

Cylindrical brush drive belt

Dual disk brush drive belt

Orbital scrub head isolators

Replace the four lower vibration isolators every 500 hours. The lower isolators (hidden) are located between the deck plate the driver plate. Contact trained personnel for isolator replacement (Figure 77).

Batteries

The lifetime of the batteries depends on their proper maintenance. To get the most life from the batteries;

• Do not charge the batteries more than once a day and only after running the machine for a minimum of 15 minutes.
• Do not leave the batteries partially discharged for long period of time.
• Only charge the batteries in a well-ventilated area to prevent gas build up. Charge batteries in areas with ambient temperatures 80°F (27°C) or less.
• Allow the charger to complete charging the batteries before re-using the machine.
• Maintain the proper electrolyte levels of flooded (wet) batteries by checking levels weekly.

Your machine is equipped with either flooded (wet) lead-acid or maintenance-free batteries supplied by Tennant.

Maintenance-free batteries

Maintenance-free (Sealed AGM) batteries do not require watering. Cleaning and other routine maintenance is still required.

Flooded (wet) lead-acid batteries

The flooded (wet) lead-acid batteries require routine watering as described below. 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 the BATTERY WATERING SYSTEM.

The electrolyte level should be slightly above the battery plates as shown before charging (Figure 78). Add distilled water if low. DO NOT OVERFILL. The electrolyte will expand and may overflow when charging. After charging, distilled water can be added up to about 0.12 in (3 mm) below the sight tubes.

NOTE: Make sure the battery caps are in place while charging. There may be a sulfur smell after charging batteries. This is normal.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‌⁠‌​​​‌​‍‍​​‍‌⁠​‌‍​⁠‌‍‌​‌‌⁠⁠‌‍‍​⁠⁠​

Checking connections / cleaning

After every 200 hours of use, check for loose battery connections and clean the surface of the batteries, including terminals and cable clamps to prevent battery corrosion. Use a scrub brush with a strong mixture of baking soda and water (Figure 79). Do not remove battery caps when cleaning batteries.

Charging batteries

The charging instructions in this manual are intended for the battery charger supplied with your machine. The use of other battery chargers that are not supplied and approved by Tennant are prohibited.

If your machine is equipped with an off-board battery charger refer to the charger's owners manual for operating instructions. Contact distributor or Tennant for battery charger recommendations if machine is not equipped with charger.

1. Transport the machine to a well-ventilated area.

2. Park the machine on a flat, dry surface, turn off machine and remove key.

3. If the machine is equipped with flooded (wet) lead-acid batteries check the battery electrolyte level weekly before charging. See FLOODED (WET) LEAD-ACID BATTERIES.
4. For models equipped with on-board chargers, remove the charger's power cord from the storage hooks and plug power cord into a properly grounded wall outlet (Figure 80).

For models equipped with off-board chargers, first connect the charger's DC cord into the machine's battery charge receptacle then plug the AC power supply cord into a properly grounded wall outlet (Figure 81). Refer to the off-board battery charger's owner manual for operating instructions.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‌⁠‍​​​‌​‍‍​​‍⁠‍‌‌‌‌‍⁠‍‌⁠‍‍⁠‍​⁠⁠‌​⁠⁠

5. The charger will automatically begin charging and shut off when fully charged. The maximum charging cycle may take up to 6-12 hours depending on battery type.
   On-board battery charger: The battery discharge indicator lights will ripple back and forth during the charging cycle. When all five lights are flashing, the charging cycle is complete (Figure 82).

6. After charging batteries unplug the power supply cord and wrap cord around the cord hooks (Figure 83).
   For models equipped with an off-board charger, always disconnect the AC power supply cord first before disconnecting charger from machine.

Corrected an obvious misprint: step 5 printed "begin charging and and shut off" (now "and shut off").

Battery charger settings

The battery charger is set to charge the battery type supplied with your machine. If you choose to change to a different battery type or capacity, the charger's charging profile must be changed to prevent battery damage.

For machine's equipped with an off-board battery charger, refer to the off-board charger's owner manual to change the charger's charging profile.

To change the on-board battery charger settings for a different battery type :

1. Disconnect the battery cable connection at machine (Figure 84).

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 (Figure 85).

4. Disconnect the battery cable, power cord and wire harness from charger. Using a T25 star screwdriver, remove the four screws that mount charger to machine (Figure 86). Remove charger from machine.

5. Remove the black cap from bottom side of charger to access the profile dial (Figure 87)

6. Using a small standard screwdriver, turn the dial to the appropriate battery type according to the following chart (Figure 88).

* The factory setting, dial position "0", is pre-programmed to accommodate the battery type supplied with new machine. After the dial is changed from the factory setting, it should not be returned to "0" otherwise battery damage may result.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‌⁠⁠​​​‌​‍‍​‌‌⁠​​⁠​‍‍​‌​⁠⁠⁠‍‍​‍⁠​​‍⁠

7. Replace the black cap on charger, reinstall battery charger and replace control console.
8. Reconnect the battery cable connection.

HydroLINK battery watering system (Trojan 155AH battery option)

The following instructions are for models equipped with the HydroLINK battery watering system option.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‍​​​​​‌​‍‍​⁠‍​‍​⁠‍​‍​‍‍⁠⁠⁠‍​‍⁠​​‍⁠​

The optional HydroLINK battery watering system provides a safe and easy way to maintain the proper electrolyte levels in your batteries. It is designed exclusively for Trojan flooded (wet) lead-acid batteries.

Before using the battery watering system check hoses and connections for damage or wear.

1. Fully charge batteries prior to using the battery watering system. Do not add water to batteries before charging, the electrolyte level will expand and may overflow when charging.
2. After charging batteries, check the battery electrolyte level indicators located on the battery covers (Figure 89). If the level indicator is white add water as described in the following instructions. If the level indicators are black the electrolyte is at the correct level, no water is required.

3. Locate the battery fill hose coupler inside the battery compartment. Remove the dust cap and connect the hand pump hose (Figure 90).

4. Submerge the other end of the hand pump hose into a bottle of distilled water (Figure 91).

5. Squeeze the bulb on the hand pump hose until firm (Figure 92). The level indicators will turn black when full.

6. After adding water, replace the dust cap on the battery fill hose and store the hand pump hose inside the machine's battery compartment for future use.

Squeegee blade replacement

Each squeegee blade has four wiping edges. When the blades become worn, simply rotate the blades end-for-end or top-to-bottom for a new wiping edge. Replace blade if all four edges are worn.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‍​‌​​​‌​‍‍​​​‍​⁠‍⁠‌‍‍‌‌‍‍⁠‌‌‌‍‍⁠‌​‍

1. Remove the squeegee assembly from the machine.
2. Fully loosen the two outside knobs on squeegee assembly. This will separate the spring loaded blade retainer from squeegee frame (Figure 93). To loosen the knobs quickly, squeeze the blade retainer and squeegee frame together.

3. Remove worn blade(s) from the blade retainer (Figure 94).

4. Rotate the rear blade to a new wiping edge (Figure 95). Make sure to align the slots in the blade with retainer tabs.

5. Squeeze the squeegee frame and blade retainer together and re-tighten the two outside knobs (Figure 96).

ec-H2O NanoClean water conditioning cartridge replacement

The water conditioning cartridge is required to be replaced when it reaches its maximum water usage or expiration time of when the cartridge was activated, which ever comes first. The control panel will signal a code when it's time to replace cartridge. See CONTROL PANEL OPERATION for further details.‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‍​‍​​​‌​‍‍​⁠‌​​‍‍⁠‍‌‍⁠⁠‌‍⁠‍‌​⁠‍​⁠​​

Depending on machine usage, on average, a new cartridge can last anywhere from 12 months for heavy machine usage to 24 months for light machine usage.

1. Park the machine on a level surface, remove the key and set parking brake, if equipped.
2. Lift the recovery tank to access the ec-H2O water conditioning cartridge (Figure 97). Drain recovery tank before lifting tank.

3. Disconnect the two hose connectors from the top of the cartridge by pressing the gray collars inward and pulling the connectors outward (Figure 98). Lift cartridge to remove.

4. Fill in the installation date on the new cartridge label (Figure 99).

5. Install the new cartridge and reconnect the two hoses. Make sure the hose connectors are fully inserted into the cartridge.
6. Reset timer for new cartridge.
   Carefully read and understand all steps first before performing procedure.
   1. Turn key on.
   2. Press and hold the service switch, located on the ec-H2O module, for 10 seconds. After releasing service switch, the three solution flow indicator lights will begin to (ripple) move back and forth (Figure 100).
   3. Within 5 seconds after releasing the service switch, while the three indicator lights are moving back and forth, quickly press and release the solution flow button located on ec-H2O module (Figure 100).
      The three indicator lights will then blink three times to indicate timer has been reset.
      Repeat process if the three indicator lights do not blink three times.

Loading/unloading machine for transporting

When transporting the machine by use of trailer or truck, carefully follow the loading and tie-down procedure:‌‌​⁠‍‌‍​⁠‌‍⁠​⁠‌⁠‌⁠​⁠​​​​​‍​⁠​​​‌​‍‍​‌​​​‌​​‍‌⁠‌⁠​‍‍⁠‌⁠⁠⁠⁠⁠​‌

1. Raise the scrub head and remove squeegee assembly.
2. Use a ramp that can support the machine weight and operator and carefully load machine. Do not operate the machine on a ramp incline that exceeds a 21% grade level (Figure 101). A winch must be used when ramp incline exceeds a 21% grade level.

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 (Figure 102).
4. Place a block behind each wheel (Figure 102).
5. Using tie-down straps, secure the machine using the four tie-down brackets located on the machine frame (Figure 102). It may be necessary to install tie-down brackets to the floor of your trailer or truck.

Storing machine

The following steps should be taken when storing the machine for extended periods of time.

1. Charge the batteries before storing machine to prolong the life of the batteries. Recharge batteries every 3 months.
2. Drain and rinse recovery tank and solution tank.
3. Store the machine in a dry area with squeegee and scrub head in the up position.

4. Open the recovery tank lid to promote air circulation.

NOTE: To prevent potential machine damage store machine in a rodent and insect free environment.

Freeze protection

Storing machine in freezing temperatures.

1. Completely drain solution tank and recovery tank.
2. Empty the water from the solution tank filter located under machine. Replace filter.
3. Pour 1 gallon (4 liters) of propylene glycol based recreational vehicle (RV) antifreeze into the solution tank.
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.
5. After storing machine in freezing temperatures, drain any remaining antifreeze from the solution tank. Add clean water to solution tank and to optional detergent tank and operate the machine to flush system.