Tennant T500e Operator Manual

IRIS Telemetry - This machine may be equipped with technology that automatically communicates over the cellular network. If the machine will be operated where cell phone use is restricted because of concerns related to equipment interference, please contact a Tennant representative for information on how to disable the cellular communication functionality.

Lithium-ion battery

For machines equipped with lithium-ion battery, contact Tennant Service for battery service and replacement.‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​​‍‍​​​‌​‍⁠⁠‍​‍​⁠⁠⁠‌‌​⁠‍​⁠‌‌​⁠⁠⁠​‌‍​

Flooded (wet) and maintenance-free sealed lead-acid batteries

Battery specifications

Requires four 6 volt deep-cycle batteries, ≤ 260 Ah @ 20 hr or two 12V TPPL batteries.

Contact distributor or Tennant for battery recommendations.

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

2. Carefully install the batteries into the battery compartment tray and arrange the battery posts as shown (Figures 2 & 3). Position foam spacer(s) as shown. Using the supplied battery post boots, connect the cables to battery posts, RED TO POSITIVE (+) & BLACK TO NEGATIVE (-).

IRIS® Battery Charging Metrics Notification: Machines equipped with capability to report battery charging data via IRIS are supplied with a charger and set of batteries from the factory. When a battery reaches its end of life and must be replaced, Tennant highly recommends that the same battery type be used to continue to maximize the machines performance. In the event a battery with a different amp hour (AH), type (Flooded, AGM, Gel, TPPL), or manufacturer is selected for replacement please contact Tennant technical service department for assistance in determining the feasibility of the replacement batteries and if so, selecting the correct charging profile. Availability of IRIS battery metric reporting is not guaranteed with third party supplied batteries.

Charge batteries

Lithium-ion batteries must be charged prior to initial use, see Charging batteries.‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​​⁠​​​​‌​‍⁠⁠​​​‍‍⁠‌​‌⁠‍​‌​⁠‍⁠​⁠⁠‍‍⁠⁠

Attaching squeegee assembly

1. Lift the squeegee mount bracket to the raised position. Place foot under pedal to lift (Figure 4).

2. Mount the squeegee assembly to the squeegee mount bracket (Figure 5). Tighten knobs to secure squeegee assembly to bracket.

3. Connect the vacuum hose to the squeegee assembly (Figure 6).

5. Check the squeegee blades for proper deflection. The blades should deflect as shown (Figure 7).

6. To adjust the blade deflection, loosen the jam nut and turn the caster hex plate until there is a 1/16” (2mm) space between caster and floor. Re-tighten jam nut and repeat step on other caster (Figure 8).

1. Raise scrub head off floor and remove key.

2. Attach the pad to the pad driver before installing the driver. Secure pad with center-lock (Figure 9).

3. Set the yellow spring clips to the open position to make brush installation easier. Press clips down and outward to set (Figure 10).

4. Align the pad driver or brush under the motor hub and push it upward to engage hub (Figure 11). Replace pads or brushes when they no longer clean effectively or when the bristles on the brush disk are worn to the yellow indicator (Figure 11).

5. To remove the pad drivers/brushes, raise the scrub head and press down on the yellow pad release plunger (Figure 12). Pad will drop to floor.

For best cleaning performance and to avoid damaging the pad driver plate or floor surface, always use backer pad with working pads (Figure 13).‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​​⁠‍​​​‌​‍⁠⁠‍⁠‍⁠‍‍‍​‌‍‍‌‍‍⁠​‍​‌‌⁠‌‌‍

1. Raise scrub head off floor and remove key.

2. Attach backer pad, retaining strips facing downward, to working pad (Figure 14).

3. Attach the two pads to the bottom of the scrub head (Figure 15). Make sure pad is centered on scrub head.

Installing cylindrical brushes (cylindrical brush scrub head model)

1. Raise scrub head off floor and remove key.

2. Unfasten yellow latch and remove the idler plate from the scrub head (Figure 16).

3. Attach idler plate to brush end with double row of bristles (Figure 17).

4. Guide brush onto the drive hub and refasten latch (Figure 18).

The machine is equipped with two solution tank fill-port locations. A front bucket fill-port and a rear hose fill-port (Figure 19).‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​​⁠⁠​​​‌​‍⁠⁠‍​⁠‍⁠‍‍​⁠​​‌⁠⁠⁠‍‍⁠‌⁠⁠⁠‌​

1. Fill the solution tank with water until level reaches the ”3/3” mark on the solution tank drain hose indicator (Figure 20).

ec-H2O Scrubbing (Option)- Fill solution tank with only cool clean water (less than 70°F (21°C)). Do not add conventional floor cleaning detergents. An ec-H2O system fault will occur if cleaning detergents are added.

Conventional Scrubbing - Fill solution tank with water (not to exceed 140°F (60°C)). 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. Conventional cleaning detergents will cause an ec-H2O system fault.

2. Replace the front and rear fill-port cover after filling solution tank (Figure 21).

Filling automatic battery watering tank (option)

1. Lift the recovery tank to access the automatic battery watering tank (Figure 22). Drain recovery tank before lifting tank.

2. Remove the blue cap from the automatic battery watering tank (Figure 23).
3. Pour distilled water into tank (Figure 23).

4. When the tank needs refilling, the automatic battery watering indicator will alert user to add distilled water (Figure 24). See Control panel operation for further details.

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

The ec-H2O system is equipped with a water conditioning cartridge (Figure 25). 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 on 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 the following code when it's time to replace the cartridge (Figure 26). The ec-H2O icon will begin to blink blue and red. 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 ec-H2O module timer must be reset. See ec-H2O water conditioning cartridge replacement.

Control panel operation

1-STEP button

With key turned on, press the 1-STEP button to activate the scrub function (Figure 27). The scrub head will lower to floor. Press button again to stop the scrub function and to raise scrub head.

Brush pressure button

Press the brush pressure button to increase or decrease the brush pressure (Figure 28). The brush pressure indicator will display the pressure setting. One LED = Low pressure, two LED's = High pressure.

NOTE: Orbital scrub head model - If brush pressure is set too high for scrubbing conditions, the brush pressure setting will automatically reduce to a lower setting and begin flashing. The flashing LED alerts the operator to reduce the brush pressure setting to prevent brush motor overload.

Solution flow button

Press the solution flow button to increase or decrease the solution flow rate (Figure 29). The solution flow indicator will display flow setting. No LED = No flow, One LED = Low flow, two LED's = Medium flow, three LED's = High flow.‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‌​‌​​​‌​‍⁠⁠‌​‌‍‍‌‍⁠⁠‍⁠‍‌‍‍⁠​​⁠​⁠​⁠⁠

ec-H2O button / indicator (option)

The ec-H2O system automatically turns on at each key start. A blue ec-H2O indicator appears when machine is equipped with the ec-H2O option. The green LED illuminates when ec-H2O is activated. To turn off the ec-H2O system, press the ec-H2O button. The green LED indicator will disappear (Figure 30).

NOTE: If a fault occurs to the ec-H2O system, the machine will automatically turn off the ec-H2O system and convert over to conventional scrubbing. The service indicator icon will remain solid red or continue to blink red until the ec-H2O fault is serviced.

Service indicator

When the machine or on-board battery charger detects a fault, the service indicator will light up and begin flashing (Figure 31). The battery discharge indicator lights will also flash a fault code. See Service indicator codes to diagnose machine fault.

Parking brake indicator (option)

Lights up when parking brake lever is engaged. To turn off indicator, disengage parking brake lever near left rear wheel (Figure 32).

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 33). When the discharge level reaches the red light, stop scrubbing and recharge the batteries. When the red light begins to flash, the scrub function will be disabled to protect the batteries from total discharge. The machine will still propel when the red light is flashing. This will allow user to transport the machine to the charging station.

Automatic battery watering indicator (option)

The automatic battery watering indicator will flash when the battery watering tank is empty and needs refilling (Figure 34).‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‌​‍​​​‌​‍⁠⁠​‍​‍​‌​​​‌‍⁠⁠⁠‍‍‌‌‍‍‌⁠⁠‍

To protect the batteries from damage, the machine's scrub function will be disabled after 10 hours of continued use if tank is not refilled. When the indicator flashes rapidly, the scrub function will be disabled. Add distilled water and restart key to clear the flashing indicator. See Filling automatic battery watering tank.

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 is empty, debris tray is clean and the float shut-off screen is installed and clean.
☐ Check scrub head skirt for wear and damage.
☐ Cylindrical brush model - confirm debris trough is empty and clean.
☐ ec-H2O Scrubbing: Confirm solution tank is filled with clear cool water only.
☐ ec-H2O Scrubbing: Confirm all conventional cleaning agents/restorers are drained and rinsed from solution tank.
☐ Check machine for proper operation.

Operating machine

For control panel operating instructions, see Control panel operation.

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 automatically turns on at each key start. A blue ec-H2O indicator appears when machine is equipped with the ec-H2O option. The green LED illuminates when ec-H2O is activated. To turn off the ec-H2O system, press the ec-H2O button. The green LED indicator will disappear (Figure 36).

4. Lower the squeegee assembly to floor by stepping on foot pedal (Figure 37). To raise squeegee assembly, place foot under foot pedal and lift. The vacuum motor will automatically start when squeegee is lowered to floor.

5. Press the 1-STEP button to activate the scrub function (Figure 38). The scrub head will lower to floor.

6. Push the directional lever forward to go forward (Figure 39). Pull the lever back to maneuver machine in reverse. Lift squeegee assembly when backing machine.

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

8. Adjust the scrubbing speed by turning the speed dial to the desired speed (Figure 41).

9. To stop scrubbing, release the start bail, press the 1-STEP button and raise the squeegee assembly off floor. Turn key off and set parking brake, if equipped.

NOTE: To pick up any remaining water left on floor after scrub head is raised continue to drive machine forward with squeegee down.‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‌‌​​​​‌​‍⁠⁠​‍⁠‍⁠‍⁠​‌​⁠⁠‌‌‍​⁠⁠‌‍⁠​⁠​

Emergency shut-off button

Push the emergency shut-off button in the event of an emergency (Figure 42). This red button shuts off all power to machine. To regain power, turn the button clockwise and restart the key.

While operating machine

1. Overlap each scrub path by 2 in (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. When draining and refilling machine, always top off the optional Severe Environment tank with detergent.

6. Pour a recommended foam control solution into the recovery tank if excessive foam appears.

7. 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.
8. Orbital Scrub Head Model - Use caution when working near the tile cove (Figure 43) and floor mounted fixtures such as pedestal sinks and other breakable items. Keep the metal scrub head edge away to avoid possible damage.

9. When leaving the machine unattended, park on level surface, turn machine off, remove key and set the parking brake, if equipped.
10. Do not operate machine in areas where the ambient temperature is above 110°F (43°C) or below freezing 36°F (2°C).

Circuit breaker panel

The machine is equipped with resettable circuit breakers to protect the machine from a current overload (Figure 44). 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.‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‌‌‌​​​‌​‍⁠⁠‍​‍​‌‌‌​​​​⁠‍​‍​⁠‍‌⁠​⁠​⁠

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 45).

Draining tanks

Draining recovery tank

Drain and clean the recovery tank after each use.

1. Transport the machine to drain area.
2. Remove the recovery tank drain hose from storage hook and pinch hose as shown (Figure 46). Over a drain basin, remove cap and slowly release the pinched hose to drain.

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 47).

4. Rinse out the recovery tank with clean water and wipe clean of any soil residue (Figure 48).

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 tank level hose from the accessory rail (Figure 49). Firmly reconnect the hose to the accessory rail after draining tank.

3. Rinse solution tank with clean water (Figure 50).

4. Remove the solution tank filter and clean screen after every 50 hours of use (Figure 51). 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 52). See Draining tanks.

2. Remove and clean the float shut-off screen (Figure 53).

3. Drain and rinse out the solution tank (Figure 54).

4. Disk scrub head - Turn pad over or replace when worn (Figure 55).

5. Replace brushes when they no longer clean effectively or when the bristles are worn to the yellow indicator (Figure 56).

Orbital scrub head - Turn the working pad over or replace when worn (Figure 57).

6. Wipe the squeegee blades clean. Inspect blades for wear and damage (Figure 58). Rotate blade if worn. See Squeegee blade replacement.

7. Clean scrub head skirt. Check for wear or damage (Figure 59). Replace if worn or damaged.

8. Clean the outside surface of the machine with an all purpose cleaner and damp cloth (Figure 60).

9. Cylindrical brush scrub head - Remove and clean debris trough (Figure 61).

10. Automatic battery watering option - Refill tank with distilled water (Figure 62). Replace cap.

11. Charge batteries (Figure 63). See Batteries.

After weekly use

1. Check the electrolyte level in all batteries (Figure 64). See Batteries.

NOTE: If machine is equipped with the automatic or manual battery watering system, See Batteries.‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‌⁠​​​​‌​‍⁠⁠‌‌⁠‍​⁠‍​​‍‌⁠‍‌​‍‍‍‌⁠​‌‌​

2. Remove the drip trap cover from the squeegee assembly and clean reservoir (Figure 65).

After every 50 hours of use

1. Drain solution tank. Remove the solution tank filter and clean screen (Figure 66). Turn the filter bowl counter-clockwise to remove.

2. Cylindrical brushes - Rotate brushes from front to rear (Figure 67). Replace brushes when they no longer clean effectively.

3. Cylindrical scrub head - Remove debris buildup from underside of scrub head, including the idler plates and drive hubs (Figure 68).

After every 100 hours of use

If machine is equipped with the optional battery watering system, check hoses for leaks, loose hose connections and for damage or wear (Figure 69). Replace system if damaged.

Batteries

Your machine is equipped with either flooded (wet) lead-acid, maintenance-free (Sealed AGM) batteries or lithium-ion battery supplied by Tennant.‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‌⁠‍​​​‌​‍⁠⁠​​‌​‌‍‍⁠⁠​⁠‌‍‌⁠​‌‍​⁠‌‍⁠‍

Flooded (wet) and maintenance-free sealed lead-acid batteries

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

• Do not charge standard wet lead-acid batteries more than once a day and only after running the machine for a minimum of 15 minutes. TPPL batteries can be opportunity charged during the day to extend run time.
• 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 temperatures between 32°F (0°C) and 80°F (27°C).
• 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 (Sealed AGM/TPPL) batteries supplied by Tennant.

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

The flooded (wet) lead-acid batteries require routine watering as described below. Check the battery electrolyte level weekly.

NOTE: If machine is equipped with the automatic or manual battery watering system, proceed to the BATTERY WATERING SYSTEM instructions.

The electrolyte level should be slightly above the battery plates as shown before charging (Figure 71). 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.

Corrected an obvious misprint: "BATTERY WATERING SYSYEM" printed with a typo (now "SYSTEM", as in the Battery watering system headings on pages 34 and 36).

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 (all battery types)

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 72). Do not remove battery caps when cleaning batteries.

Lithium-ion battery

The lithium-ion battery pack is a maintenance-free battery protected by a battery management system (BMS). To achieve the maximum battery life, carefully follow the instructions below:‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‌⁠⁠​​​‌​‍⁠⁠‍‍​‍​‍‌⁠‍⁠​‍⁠​​​‌​‍‍​⁠‍‍

• Lithium-Ion batteries must be charged prior to initial use.
• Carefully follow the Important Safety Instructions section in the manual when using the Lithium-ion Battery Model.
• Only use the lithium-ion battery charger supplied with machine.
• Charge battery pack in well-ventilated areas. For best charging performance, charge the battery pack in temperatures below 80°F (27°C) and above 32°F (0°C). Battery pack may shut down and not take a charge in elevated or freezing temperatures.
• Do not store the machine for an extended period if battery is discharged to the last bar, the battery may further discharge to a level that is unrecoverable.
• When the machine shuts down due to a depleted battery pack, do not repeatedly cycle the key on and off. This may cause permanent battery pack damage. Recharge battery pack immediately to avoid damage.
• Opportunity charging (i.e. partial charge cycle of a half hour or more) is only recommended if discharge level is below 80%.
• Do not operate machine in temperatures above 104°F (40°C) or below -4°F (-20°C). Machine may shutdown if exceed these temperatures.
• Contact Tennant Service for lithium-ion battery service and replacement.

Battery power button / battery discharge indicator

Each Lithium-Ion battery contains a power button to turn on/off the battery power supply. The battery discharge indicator (BDI) displays the current state of the battery (Figure 73).

To display the battery charge status or fault state (while the batteries are active), press and hold the power button of any battery for one second. When the batteries are fully charged, all five green indicators are lit. As the battery discharges, the indicator levels decreases. If the indicators flash red the battery is getting very low. If the indicators display solid red along with green, the battery has a fault. Contact Tennant Service to fix the fault.

LED indicator status	Battery state of charge
	81-100%
	61-80%
	41-60%
	21-40%
	11-20%
	1-10%
	Fault - Contact Service

To turn off the battery power (while the batteries are active), press and hold the battery power button of any battery for 20 seconds. The battery discharge indicators will turn off. Turning off one battery will shut down power to all connected batteries. Batteries should be shut down before any service is completed on the battery modules.

To turn on the battery power (when the batteries are shutdown), press and hold the power button on each battery for 5 seconds. The battery discharge green indicators will illuminate when turned on.

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. For models equipped with the automatic battery watering system, check if the automatic battery water tank needs refilling. Add distilled water if low.
4. For models equipped with an on-board charger, remove the charger's power cord from the storage hooks and plug power cord into a properly grounded wall outlet (Figure 74).

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 75). Refer to the off-board battery charger's owner manual for operating instructions.

5. The charger will automatically begin charging and 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 repeatedly flash two times, the charging cycle is complete (Figure 76).

For Lithium-ion Batteries: During the charging cycle, starting from left to right, the indicator light will flash, turn solid then progress to the next light. Once the charging cycle completes this process through all five lights, all lights will repeatedly flash two times at the end of the charging cycle.

6. After charging batteries unplug the power supply cord and wrap cord around the cord hooks (Figure 77).

For models equipped with an off-board charger, always disconnect the AC power supply cord first before disconnecting charger from machine (Figure 77).‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‍​‌​​​‌​‍⁠⁠‍‌⁠‍‌⁠⁠​⁠‌‌‌​​​‍​⁠​‌‍‍‍‌

Battery charger settings

NOTE: The following instructions apply to models equipped with flooded lead-acid or sealed AGM batteries.

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.

The machine's battery discharge indicator (BDI) must also be reprogrammed to match battery type to prevent battery damage and/or short run-time.

NOTE: For machines shipped without batteries, the battery discharge indicator and the on-board battery charger are set for GEL batteries as the default. If you choose to use a different battery type, the settings must be changed as described as below.

NOTE: For machines shipped without batteries and supplied with an Off-Board Charger, the off-board battery charger is set for wet lead-acid batteries from the factory. The machine's battery discharge indicator is set for GEL batteries as the default. The battery discharge indicator must be reprogrammed to match charger settings, contact service.

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 Service Department.

OFF-BOARD BATTERY CHARGER:

To change the off-board battery charger settings, refer to the off-board charger's owner manual.

To reprogram the machine's battery discharge indicator (BDI), service application software is required, contact service.

ON-BOARD BATTERY CHARGER:

To change the on-board battery charger settings, service application software required, contact service.

As an alternative, the charger profile may be manually changed. See Changing on-board battery charger settings. The battery discharge indicator will automatically reprogram to match battery type when the battery charger profile is changed.

NOTE: TPPL batteries come with an unique battery charger that is only used with TPPL batteries. It's not intended to be changed.

Changing on-board battery charger settings

To manually change the on-board battery charger settings for a different battery type, carefully follow instructions as described below :

NOTE: The manual method is only an alternative if unable to change setting by use of the Service Application Software performed by Service.

1. Disconnect the battery cable connection at machine (Figure 78).

2. Carefully peel back the charger display label to access the dial settings (Figure 79).

3. Using a small standard screwdriver, turn the dial to the appropriate battery type according to the following chart (Figure 80).

* The CAN-BUS setting, dial position “0”, is the software setting that is programmed to match battery type supplied with machine. When the dial is manually changed to a different setting, it should not be reset back to “0” otherwise battery damage may result. Service Application Software is required to reset dial back to “0”. Contact Service.‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‍​‍​​​‌​‍⁠⁠‍‌‌‍⁠​​‌⁠​‍‌​⁠⁠​⁠‌⁠​‍‌​‍

4. Re-apply the display label.
5. To set the BDI for the new battery type, plug the on-board battery charger cord into an electrical outlet. The machine's software will automatically reprogram the BDI to the new battery type.

Manual battery watering system (Trojan battery option)

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

The optional manual 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.

Kit p/n TN4022010 (replaces 9021123)

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 electrolyte level indicator on each battery cap. If any of the indicator floats are low, add water as described in the next step (Figure 81).

3. If the level indicator has a low white float add water as described in the following instructions. (Figure 82).

4. Locate the battery fill hose coupler inside the battery compartment. Remove the dust cap and connect the hand pump hose (Figure 83).

5. Submerge the other end of the hand pump hose into a bottle of distilled water (Figure 84).

6. Squeeze the bulb on the hand pump hose until firm. The indicator float will rise when full (Figure 85).

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

Automatic battery watering system (Trojan battery option)

The automatic battery watering system is designed to automatically refill the batteries after the machine reaches a limited number of charge cycles. Do not remove battery caps and manually add water to the batteries.‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‍‌​​​​‌​‍⁠⁠‌⁠​​‌⁠⁠‌⁠‌‌⁠‌‌⁠⁠‍⁠​‌​​​​

Check the automatic battery watering system for leaks, loose hose connections and for damage or wear. (Figure 86). Replace if damaged.

Check the water level in the automatic watering tank periodically. Add distilled water when low (Figure 87).

The automatic battery watering indicator will also alert user to add distilled water when tank is empty (Figure 88). See Control panel operation for further details.

To store machine equipped with the automatic battery watering system in freezing temperatures, see Storing machine / freeze protection.

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 89). To loosen the knobs quickly, squeeze the blade retainer and squeegee frame together.

3. Remove worn blade(s) from the blade retainer (Figure 90).

4. Rotate the rear blade to a new wiping edge and reinstall blade (Figure 91). 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 92).

Parts ›

ec-H2O 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 93). 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 94). Lift cartridge to remove.

4. Fill in the installation date on the new cartridge label (Figure 95).

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.

a. Turn key on.
b. 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 96).
c. 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 96).
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.

Machine jacking

Use the designated locations to jack up the machine for service (Figure 97). Empty the recovery and solution tanks and position the machine on a level surface before jacking.‌‌​⁠​‌​​‌​‌⁠​‍‌​‍​⁠⁠​​​​​‍‌⁠​​​‌​‍⁠⁠⁠‍‌​​⁠​​⁠‌​​‍‌‍‍‍⁠‍⁠‌⁠⁠​

Transporting machine

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

1. Drain tanks, raise the scrub head and the remove squeegee assembly.
2. Carefully load machine in trailer or on truck.

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 (Figure 98).
5. Using tie-down straps, secure the machine using the four tie-down brackets located on the machine frame (Figure 98). It may be necessary to install tie-down brackets to the floor of your trailer or truck.

NOTE: When transporting machine in an open truck or trailer, secure recovery tank lid.

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 lead-acid batteries once a month. Recharge Lithium-ion batteries once a year.
2. Disconnect batteries before storing.
3. Lithium-ion batteries: Turn off battery power with the battery power button.
4. Drain and rinse recovery tank and solution tank.
5. Store the machine in a dry area with squeegee and scrub head in the up position.

6. Open the recovery tank lid to promote air circulation.
7. If storing machine machine in freezing temperatures, proceed to FREEZE PROTECTION.

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

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

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 (Figure 99).

3. Pour 1 gal (4 L) of propylene glycol based recreational vehicle (RV) antifreeze into the solution tank.

4. Models not equipped with ec-H2O system - Turn machine on and operate the solution flow system. Turn the machine off when the antifreeze is visible on the floor.

Models equipped with ec-H2O system - Turn machine and set the solution flow rate on and operate ec-H2O scrubbing to cycle antifreeze through system. Turn machine off when antifreeze is visible on the floor. This may take up to two minutes.

5. Models equipped with optional automatic battery watering tank - Lift tank from machine and empty the water from tank (Figure 100).

Drain remaining water from system by removing the drain hose cap located below the tank (Figure 101). Leave cap off tank when draining system. After draining, replace cap on drain hose.

6. 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.
7. Refill the automatic battery watering tank with distilled water, if equipped.