Nobles Speed Scrub 500 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.

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 re-coating.

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.

Turf scrubbing pad (Green) - Used to scrub uneven floor surfaces with crevices, cracks and deep grout lines.

Machine setup

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 in (2 mm) space between caster and floor. Re-tighten jam nut and repeat step on other caster (Figure 8).

   

Installing disk brushes/pads (disk scrub head model)

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)- 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. See DRAINING TANKS (page 20).

2. After filling the solution tank make sure the front and rear fill-port covers are securely in place (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).
   FOR SAFETY: When operating machine, only use distilled water when filling the automatic battery watering tank.

   

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 (page 22) 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 (page 34).

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 indicator (option)

The ec-H2O system automatically turns on at each key start. A blue ec-H2O indicator will appear on the control panel indicating that the system is activated. To turn off the ec-H2O system, press the ec-H2O switch located below the key switch. The blue ec-H2O 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 (page 22) to diagnose machine fault.

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 32). 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 33).

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 (page 15).

6. Push the directional lever forward to go forward (Figure 38). Pull the lever back to maneuver machine in reverse. Lift squeegee assembly when backing machine.

   

7. To begin scrubbing, pull the start bail (Figure 39).

   

8. Adjust the scrubbing speed by turning the speed dial to the desired speed (Figure 40).

   

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 41). 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.
   ATTENTION: Foam buildup will not activate the float shut-off screen, vacuum motor damage will result.
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 42) 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 43). 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 44).

Draining tanks

Draining recovery tank

Drain and clean the recovery tank after each use.

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 45).

   

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 46).

   

4. Rinse out the recovery tank with clean water and wipe clean of any soil residue (Figure 47).

   

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 48). Firmly reconnect the hose to the accessory rail after draining tank.

3. Rinse solution tank with clean water (Figure 49).

   

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

   

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 51). See DRAINING TANKS (page 20).

   

2. Remove and clean the float shut-off screen (Figure 52).

   

3. Drain and rinse out the solution tank (Figure 53).

   

4. Disk scrub head - Turn pad over or replace when worn (Figure 54).

   

5. Replace brushes when they no longer clean effectively or when the bristles are worn to the yellow indicator (Figure 55).

   

   Orbital scrub head - Turn the working pad over or replace when worn (Figure 56).

   

6. Wipe the squeegee blades clean. Inspect blades for wear and damage (Figure 57). Rotate blade if worn. See SQUEEGEE BLADE REPLACEMENT (page 33).

   

7. Clean scrub head skirt. Check for wear or damage (Figure 58). Replace if worn or damaged.

   

8. Clean the outside surface of the machine with an all purpose cleaner and damp cloth (Figure 59).
   FOR SAFETY: When servicing machine, do not power spray or hose off machine. Electrical malfunction may occur. Use damp cloth.

   

9. Cylindrical brush scrub head - Remove and clean debris trough (Figure 60).

   

10. Automatic battery watering option - Refill tank with distilled water (Figure 61). Replace cap.

    

11. Charge batteries (Figure 62). See BATTERIES (page 29).

    

1. Check the electrolyte level in all batteries (Figure 63). See BATTERIES (page 29).

   NOTE: If machine is equipped with the automatic or manual battery watering system, See BATTERIES (page 29).‌‌​⁠​​‌‌​​‌⁠​⁠⁠​‌‍​​​​​​​‌‍⁠​​​‌​‍‍​‍​⁠​‍​​‌‌​‍​⁠‍​‌‌‍​‌​⁠​​

   

2. Remove the drip trap cover from the squeegee assembly and clean reservoir (Figure 64).

   

After every 50 hours of use

1. Drain solution tank. Remove the solution tank filter and clean screen (Figure 65). Turn the filter bowl counter-clockwise to remove.

   

2. Cylindrical brushes - Rotate brushes from front to rear (Figure 66). 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 67).

   

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 68). Replace system if damaged.

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 (Sealed AGM) 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: If machine is equipped with the automatic or manual battery watering system, proceed to the BATTERY WATERING SYSTEM instructions (page 32).

The electrolyte level should be slightly above the battery plates as shown before charging (Figure 70). 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 71). 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.

IMPORTANT NOTICE: 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 (i.e. flooded (wet) lead-acid, maintenance-free, sealed, AGM batteries, etc.), the charger's charging profile must be changed to prevent battery damage. See BATTERY CHARGER SETTINGS (page 31).‌‌​⁠​​‌‌​​‌⁠​⁠⁠​‌‍​​​​​​​‌⁠‍​​​‌​‍‍​​‍‌⁠‍​‌‍⁠​‍​‌‌​‍⁠‍‍‌‌‌⁠‌

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 72).

   

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

   FOR SAFETY: Do not disconnect the off-board charger's DC cord from the machine's receptacle when the charger is operating. Arcing may result. If the charger must be interrupted during charging, disconnect the AC power supply cord first.

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 repeatedly flash two times, the charging cycle is complete (Figure 74).

   

   ATTENTION: Do not disconnect battery cables while charger is plugged in, circuit board damage may result.
6. After charging batteries unplug the power supply cord and wrap cord around the cord hooks (Figure 75).

   For models equipped with an off-board charger, always disconnect the AC power supply cord first before disconnecting charger from machine (Figure 75).

   

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 models shipped without batteries and 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.

Off-board battery charger:

Refer to the off-board charger's owner manual to change the charging profile.

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

On-board battery charger:

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.

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 76).

2. Carefully peel back the charger display label to access the dial settings (Figure 77).

   

3. Using a small standard screwdriver, turn the dial to the appropriate battery type according to the following chart (Figure 78).

   

* 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.

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 79). 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 80).

   

4. Submerge the other end of the hand pump hose into a bottle of distilled water (Figure 81).

   

5. Squeeze the bulb on the hand pump hose until firm (Figure 82). 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.

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 83). Replace if damaged.

Check the water level in the automatic watering tank periodically. Add distilled water when low (Figure 84).

The automatic battery watering indicator will also alert user to add distilled water when tank is empty (Figure 85). See CONTROL PANEL OPERATION (page 17) for further details.

To store machine equipped with the automatic battery watering system in freezing temperatures, see STORING MACHINE/FREEZE PROTECTION (page 36).

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

   

3. Remove worn blade(s) from the blade retainer (Figure 87).

   

4. Rotate the rear blade to a new wiping edge and reinstall blade (Figure 88). 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 89).

   

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 (page 16) 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 90). 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 91). Lift cartridge to remove.

   

4. Fill in the installation date on the new cartridge label (Figure 92).

   

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 93).
   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 93).

      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 94). Empty the recovery and solution tanks and position the machine on a level surface before jacking.

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 95).
5. Using tie-down straps, secure the machine using the four tie-down brackets located on the machine frame (Figure 95). 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 batteries once a month.
2. Disconnect batteries before storing.
3. Drain and rinse recovery tank and solution tank.
4. Store the machine in a dry area with squeegee and scrub head in the up position.
   ATTENTION: Do not expose machine to rain, store indoors.
5. Open the recovery tank lid to promote air circulation.
6. If storing machine in freezing temperatures, proceed to FREEZE PROTECTION.

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 (Figure 96).

   

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.