Tennant T3 Orbital Operator Manual

T3 Orbital Automatic Scrubber

English EN‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​​​‌​​​‌​⁠​​​‍‍‌‌‌⁠​‌​⁠‍⁠‌‍‍‍⁠​‍⁠⁠⁠‌

Operator Manual

Model Part No:
9009981 Conventional Scrubber
9009980 ec-H2O Scrubber

Hygenic® Fully Cleanable Tanks

North America

To view, print or download the latest manual, visit: www.tennantco.com/manuals

9010337
Rev. 00 (12-2012)

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 machine maintenance instructions provided.
• The machine is maintained with manufacturer supplied or equivalent parts.

Parts and supplies may be ordered online, by phone, by fax or by mail.

INTENDED USE

This walk behind orbital scrubber is intended for commercial use, for example in hotels, schools, hospitals, factories, shops, offices, and rental businesses. It is designed to scrub floors in an indoor environment and is not constructed for any other use. Use only recommended pads and commercially available floor cleaners intended for machine application. Do not use flammable liquids with this machine. This machine is not intended for cleaning carpets or sanding wood floors.

TENNANT Company
PO Box 1452
Minneapolis, MN 55440
Phone: (800) 553-8033 or (763) 513-2850

www.tennantco.com

Specifications and parts are subject to change without notice.

Original Instructions Copyright © 2012 TENNANT COMPANY, Printed in U.S.A. All rights reserved.

MACHINE DATA

Please fill out at time of installation for future reference.

• Model No. -
• Serial No. -
• Machine Options -
• Sales Rep. -
• Sales Rep. phone no. -
• Customer Number -
• Installation Date -

TABLE OF CONTENTS

OPERATION

IMPORTANT SAFETY INSTRUCTIONS - SAVE THESE INSTRUCTIONS

The following warning alert symbol and the “FOR SAFETY” heading are used throughout this manual as indicated in their description:‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​​‌​​​​‌​⁠​​‍⁠‌‍​​‍‌‍‍‍‍‍‍‌‌⁠⁠​​⁠​⁠‍

FOR SAFETY: To identify actions which must be followed for safe operation of equipment.

The following safety precautions signal potentially dangerous conditions to the operator or equipment. All operators must read, understand and practice them.

This machine is not equipped with explosion proof motors. The electric motors will spark upon start up and during operation which could cause a flash fire or explosion if machine is used in an area where flammable vapors/liquids or combustible dusts are present.

• Do Not Pick Up Flammable Materials Or Reactive Metals.
• Batteries Emit Hydrogen Gas. Keep Sparks And Open Flame Away. Keep Battery Compartment Open When Charging.

If the charger supply cord is damaged or broken, it must be replaced by the manufacturer or its service agent or a similarly qualified person in order to avoid a hazard.

FOR SAFETY:

1. Do not operate machine:
   • With flammable liquids or near flammable vapors as an explosion or flash fire may occur.
   • Unless trained and authorized.
   • Unless operator manual is read and understood.
   • If not in proper operating condition.
   • Unless mentally and physically capable of following machine instructions.
   • In areas that are too dark to safely see the controls or operate the machine.
2. Before starting machine:
   • Check machine for fluid leaks.
   • Make sure all safety devices are in place and operate properly.
3. When using machine:
   • Use only as described in this manual.
   • Go slow on inclines and slippery surfaces.
   • Wear non-slip shoes.
   • Reduce speed when turning.
   • Report machine damage or faulty operation immediately.
   • Never allow children to play on or around.
   • Do not operate on inclines that exceed 5%.
   • Follow mixing, handling and disposal instructions on chemical containers.
   • Follow safety guidelines concerning wet floors.
4. Before leaving or servicing machine:
   • Stop on level surface.
   • Turn off machine.
   • Remove key.
5. When servicing machine:
   • Avoid moving parts. Do not wear loose clothing, jewelry and secure long hair.
   • Disconnect battery connections before working on machine.
   • Wear protective gloves and eye protection when handling batteries or battery cables.
   • Avoid contact with battery acid.
   • Wear protective gloves and eye protection when handling white vinegar.
   • Do not power spray or hose off machine. Electrical malfunction may occur.

• All work must be done with sufficient visibility and lighting.
• Wear personal protection equipment as needed and where recommended in this manual.
• Wear a dust mask, protective glasses and gloves in dusty environments.
• Keep work area well ventilated.
• Use manufacturer supplied or approved replacement parts.
• All repairs must be performed by a qualified service person.
• Do not modify the machine from its original design.

6. When loading/unloading machine onto/off truck or trailer:
   • Drain tanks before loading.
   • Use a ramp that can support the machine weight and person loading it. Do not exceed a 15% ramp incline at a ramp length of 12 ft (3.7m).
   • Turn machine off.
   • Put scrub head in the lowered position.
   • Block machine wheels.
   • Use tie-down straps to secure machine.
   • Set parking brake, if equipped.

SAFETY LABELS

The safety labels appear on the machine in the locations indicated. Replace labels if they are missing or become damaged or illegible.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​​‌‌​​​‌​⁠​​‌​​⁠‍‌‌​‍⁠‍⁠‌‍​‌​‌‌‌‌⁠‌​

WARNING LABEL - Located on recovery tank cover.

BATTERY CHARGE LABEL - Located near battery compartment.

OPERATION

MACHINE COMPONENTS

CONTROL PANEL SYMBOLS

MACHINE INSTALLATION

UNCRATING MACHINE

1. Carefully check the shipping crate for signs of damage. Report damages at once to carrier.
2. Check the contents list. Contact distributor for missing items.
   Contents:
   • 2-12 V Batteries - Optional
   • 2-Foam Battery Spacers (#630375)
   • Battery Tray (#1012994)
   • 15 in / 38 cm Battery Cable (#130364)
   • 4-Battery Cable Rubber Boots
   • Squeegee Assembly (#9001178)
3. To uncrate your machine, remove the shipping hardware and straps that secure the machine to the pallet. With assistance, carefully lift the machine off the pallet.

INSTALLING BATTERIES

Battery Specifications:
Two 12 volt deep cycle lead acid batteries.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​​‌⁠​​​‌​⁠​​⁠​⁠⁠​‍‌‍⁠⁠⁠‌‍⁠⁠⁠​‌​​⁠‌‌‌

155 AH battery - 20 in / 50cm

Maximum battery dimensions: 6.85 in / 174 mm W x 15 in / 380 mm L x 11.18 in / 284 mm H.

1. Park the machine on a level surface and remove the key.
2. Lift the recovery tank to access the battery compartment (Figure 1).

3. Carefully install the batteries into the battery compartment tray and arrange the battery posts as shown (Figure 2). Insert the two foam spacers along side the batteries as shown.

4. Using the supplied battery post boots, connect the cables to the battery posts in numerical order as labeled (Figure 2), RED TO POSITIVE (+) & BLACK TO NEGATIVE (-).

HOW THE MACHINE WORKS

Conventional Scrubbing:
Water and detergent from the solution tank flow to the floor through a manually controlled solution valve. The pad uses the detergent and water solution to scrub the floor clean. As the machine moves forward, the squeegee wipes the dirty solution from the floor into the recovery tank.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​​‍​​​​‌​⁠​​⁠⁠​​‍‍‍⁠⁠‌​‍⁠‍‍‍⁠​‍‍⁠‍​‍

ec-H2O Scrubbing (ec-H2O Model):
(ec-H2O-electrically converted water)
Normal water passes through a module where it is oxygenated and charged with an electric current. The electrically converted water changes into a blended acidic and alkaline solution forming a neutral pH cleaner. The converted water attacks the dirt, breaks it into smaller particles, and pulls it off the floor surface allowing the machine to easily scrub away the suspended soil. The converted water then returns to normal water in the recovery tank.

PAD INFORMATION

BACKER PAD (With Retaining Strips)

For best cleaning performance and to avoid damaging the pad driver plate or floor surface, always use backer pad (p/n 9010674) with work pads (Figure 3).‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​​‍‌​​​‌​⁠​​⁠‍⁠‌‍‌​‍​⁠‍‌‍‍‍‌⁠​⁠‍​​⁠‌

WORK PADS

For best results, use the correct work pad type for the cleaning application. The following are recommended work pads.

Polishing Pad (White) - Used to maintain highly polished or burnished floors (p/n 1205512, 10 pack).

Buffing Pad (Red) - Used for light duty scrubbing without removing floor finish (p/n 1205513, 10 pack).

Scrubbing Pad (Blue) - Used for medium to heavy-duty scrubbing. Removes dirt, spills, and scuffs (p/n 1205514, 10 pack).

Surface Preparation Pad (Maroon) - Used for very aggressive chemical free removal of floor finish to prepare the floor for re-coating (p/n 1205515, 10 pack).

MACHINE SETUP

ATTACHING SQUEEGEE ASSEMBLY

1. Park the machine on a level surface and remove the key.
2. Lift the squeegee lift lever to the upward position (Figure 4).

   

3. Mount the squeegee assembly to the squeegee pivot bracket as shown (Figure 5). Make sure the knobs are completely seated into the slots before securing knobs.

   

4. Connect the vacuum hose to the squeegee assembly. Loop the hose as shown using the hose clip provided (Figure 6).

   

5. Check the squeegee blades for proper adjustment (See SQUEEGEE BLADE ADJUSTMENT).

OPERATION

INSTALLING BACKER PAD AND WORK PAD

1. Park the machine on a level surface and remove the key.
2. Step down on the scrub head lift pedal to raise the scrub head off the floor (Figure 7).

3. Align the backer pad with the four edges of the scrub head and install the backer pad onto the bottom of the scrub head (Figure 8).

4. Align and install the work pad onto the backer pad (Figure 9).

FILLING SOLUTION TANK

The machine is equipped with a hose fill-port at the rear of the machine, and a bucket fill-port located under the recovery tank (Figure 10). Before accessing the bucket fill-port make sure that the recovery tank is empty.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​​‍‍​​​‌​⁠​​‍‌‌⁠⁠‍‌​⁠⁠⁠‌⁠​‍‍‍​‌‌​‍​‍

Fill the solution tank to the “40 L MAX” level on the solution tank sight gauge. When using the bucket fill-port, stop filling when the level reaches the bottom edge of the fill-port (Figure 10).

FOR ec-H2O SCRUBBING: Use cool clean water only (less than 70°F/21°C). Do not add any conventional floor cleaning detergents, system failure may result.

FOR CONVENTIONAL SCRUBBING: Fill the tank with water, 140°F/60°C maximum. Pour a recommended cleaning detergent into the solution tank according to mixing instructions on the bottle.

OPERATION

MACHINE OPERATION

FOR SAFETY: Do not operate machine, unless operator manual is read and understood.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​​‍⁠​​​‌​⁠​​​‍⁠‌​‍⁠‍⁠⁠​‌⁠⁠⁠‍⁠​‍​⁠​​⁠

PRE-OPERATION CHECKS

• Sweep and dust-mop the floor.
• Check the battery meter charge level (See BATTERY METER).
• Check the pad for wear.
• Check the squeegee blades for wear and proper adjustment.
• Make sure the recovery tank is empty and the float shut-off screen is installed and clean.
• For ec-H2O Scrubbing: Make sure the solution tank is filled with cool clean water only.
• For ec-H2O Scrubbing: Ensure that all conventional cleaning agents are drained and rinsed from solution tank.

OPERATING THE MACHINE

1. Turn the main power key switch to the on ( I ) position (Figure 11).

2. ec-H2O model: Press the ec-H2O system switch to the on ( I ) position (Figure 12).

3. Lower the squeegee assembly to floor by lowering the squeegee lift lever (Figure 13). The vacuum motor will automatically turn on.

OPERATION

4. Lower the scrub head to the floor by stepping on the scrub head lift pedal as shown (Figure 14).

5. Pull the control handle bail backwards to start scrubbing. The machine will propel forward. Push the control handle bail forward to move the machine in reverse (Figure 15).

6. Adjust the speed control knob to a desired scrubbing speed (Figure 16).

7. For conventional scrubbing, turn the solution flow control knob to a desired flow rate (Figure 17).

8. When more pad pressure is needed for heavily soiled areas simply lift the down pressure lever (Figure 18).

9. To stop scrubbing, release the control handle bail, raise the scrub head and the squeegee.

WHILE OPERATING MACHINE

1. Overlap each scrubbing path by 5 cm (2 in).
2. Keep the machine moving to prevent damage to floor finish.
3. Wipe the squeegee blades with a cloth if blades leave streaks. Pre-sweep the area to prevent streaking.
4. Do not operate the machine on inclines that exceed 5%.

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

OPERATION

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 the squeegee down.
7. When leaving the machine unattended, park the machine on a level surface and remove the key.
8. ec-H2O Model: If an alarm sounds and the ec-H2O system indicator light begins to blink red, the ec-H2O module must be flushed to resume ec-H2O operation (See ec-H2O MODULE FLUSH PROCEDURE) (Figure 19).

7. Use caution when working near the tile cove (Figure 20) and floor mounted fixtures such as pedestal sinks and other breakable items. Keep the metal scrub head edge away to avoid possible damage to the cove and other breakable items.

9. When transporting or storing machine, remove the squeegee assembly and hang it on the storage bracket (Figure 21).

10. Perform the Daily Maintenance procedures after scrubbing (See MACHINE MAINTENANCE).

BATTERY METER

The battery meter displays the charge level of the batteries. When the batteries are fully charged, all indicator lights are lit. As the batteries discharge, the indicator lights will begin to go out from right to left. To prolong the life of the batteries, do not allow the indicator lights to go beyond the discharge level as described below.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​​⁠‌​​​‌​⁠​​‍‍‌⁠⁠‌‍‌‍‌​‍​​⁠‌‌​⁠‍‌⁠‌⁠

When the discharge level reaches the last red light (Figure 22), stop scrubbing and recharge the batteries. If the last red light begins to flash, the scrubbing function will shut off automatically. This protects the batteries from total discharge. Drive the machine to the charging area and recharge the batteries immediately.

CIRCUIT BREAKER / FUSES

The machine is equipped with a resettable circuit breaker to protect the pad motor from damage. The circuit breaker button is located on the control panel (Figure 23). If the circuit breaker should trip, determine the cause, allow the motor to cool, and then manually reset the circuit breaker button.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​​⁠‍​​​‌​⁠​​‍‌‍‍​‍‌​‍‍‍⁠‍​‍‍​⁠⁠⁠​‌‌⁠

The machine is also equipped with two fuses located inside the control console: 30A Main fuse and a 25A vacuum motor fuse. When replacing a fuse never substitute a higher Amp rated fuse than specified.

Contact an Authorized Service Center for machine repairs.

HOUR METER

The hour meter records the number of total hours the motor has been powered on. Use the hour meter to determine when to perform recommended maintenance procedures and to record service history (Figure 24).

DRAINING TANKS

The recovery tank should be drained and cleaned out after every use. The solution tank should be cleaned out periodically to remove any corrosion.

Transport the machine to a draining site, turn the key off and follow the draining instructions below:

DRAINING RECOVERY TANK

1. While holding the drain hose upward, remove the cap and lower hose to drain (Figure 25).

2. Open the recovery tank cover and rinse out the tank. Use a rag to remove any excess dirt (Figure 26).

3. Clean the float shut-off screen and debris tray located in the recovery tank (Figure 27).

DRAINING SOLUTION TANK

1. To drain any remaining water from the solution tank, pull the solution tank level hose off the hose fitting as shown (Figure 28).

2. To rinse out the solution tank, remove the clean-out cap at the rear of the machine and spray water, 60°C (140°F) maximum, directly into the two fill-ports located under the recovery tank (Figure 29).

3. Remove and clean the solution tank filter (Figure 30). Turn the filter counter-clockwise to remove.

4. After rinsing out the tank, securely replace the solution tank filter, clean-out cap, fill-port covers and hose.

CHARGING BATTERIES

The following charging instructions are intended for battery chargers supplied with the machine. Only use a battery charger with the following specifications to prevent battery damage.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​‌​​​​​‌​⁠​​⁠‍‌⁠​​⁠⁠​‌‍‌‌‌​​‌​‍⁠⁠‍⁠‍

BATTERY CHARGER SPECIFICATIONS:

• CHARGER TYPE:
  • FOR SEALED (Gel) BATTERIES
  • FOR WET (Lead Acid) BATTERIES
• OUTPUT VOLTAGE - 24 VOLTS
• OUTPUT CURRENT - 11 AMPS
• AUTOMATIC SHUTOFF CIRCUIT
• FOR DEEP CYCLE BATTERY CHARGING

USING THE ON-BOARD BATTERY CHARGER

To determine your battery type, see battery label. Contact your battery supplier if not specified.

To verify the setting of the charger profile:

Connect the charger cord into an electrical receptacle, open the battery compartment and view the on-board battery charger LED display.

If the LED labeled “GEL” is on, the charger is set for Gel (sealed) batteries. If the LED is off, the charger is set for Wet/lead acid (flooded) batteries (Figure 31).

To change the charger profile:

1. Remove the knob that holds the battery charger mounting panel in position and remove panel to access battery charger (Figure 32).

2. Unplug the charger cord. Remove the “Charger Profile Selection” panel and position the switch towards the proper setting: “GEL” or “Flooded” (Figure 33).

OPERATION

To charge batteries:

1. Transport the machine to a well-ventilated area for charging.
2. Park the machine on a level surface and turn the key off.
3. If charging wet (lead acid) batteries check the fluid level before charging (See BATTERY MAINTENANCE on page 24).
4. Connect the charger cord into a properly grounded electrical receptacle (Figure 34).

5. The charger will start automatically within a few seconds. The LEDs will display the charging state as described in the following table (Figure 35).

* See the On-board Battery Charger Fault Codes table. When a fault occurs, the charger will also sound an alarm.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​‌​‌​​​‌​⁠​​​‍⁠‌⁠‌⁠​⁠⁠‌‌⁠‌‍⁠⁠‌‍​​‍‍‌

FIG. 35

6. Prop up the recovery tank for ventilation when charging (Figure 36).

7. Once the batteries are fully charged, the charger will stop suppling power, but will continue to monitor the battery voltage. The charger will restart if the batteries self-discharge.

The charger cord must also be disconnected for 30 seconds before the charger can be restarted.

OPERATION

ON-BOARD BATTERY CHARGER FAULT CODES

MACHINE MAINTENANCE

To keep the machine in good working condition, simply follow the daily, monthly and quarterly maintenance procedures.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​‌​⁠​​​‌​⁠​​​‍⁠​​⁠‌​‌‍⁠​​⁠​‌⁠‌‌⁠‍​⁠⁠

DAILY MAINTENANCE (After Every Use)

1. Drain and clean out the recovery tank (Figure 37).

   

2. Remove the debris tray and empty (Figure 38).

   

3. Remove and clean the float shut-off screen located in the recovery tank (Figure 39).

   

4. Drain the solution tank and rinse out the inside with hot water, 60°C (140°F) maximum temperature, as needed (Figure 40).

   

5. Remove and clean the solution tank filter (Figure 41). Turn the filter counter-clockwise to remove.

   

MAINTENANCE

6. Turn the work pad over or replace when worn (Figure 42).

7. Wipe the squeegee blades clean. When machine is not in use, raise the squeegee assembly off the floor or hang it on the storage bracket (Figure 43).

8. Check the condition of the squeegee blade wiping edge (Figure 44). Rotate blade if worn.
   (See SQUEEGEE BLADE REPLACEMENT)

9. Clean the machine with an all purpose cleaner and damp cloth (Figure 45).

12. Recharge the batteries after a total of 30 minutes of use or more (Figure 46). (See CHARGING BATTERIES).

MAINTENANCE

MONTHLY MAINTENANCE (Every 80 hours of use)

1. Clean the battery tops to prevent corrosion (See BATTERY MAINTENANCE).
2. Check for loose battery cable connections.
3. Inspect and clean the recovery tank cover seal (Figure 47). Replace if damaged.

4. Lubricate all pivot points and rollers with silicone spray then coat with a water resistant grease to maintain smooth operation.
5. Check the machine for loose nuts and bolts.
6. Check the machine for leaks.

MOTOR MAINTENANCE

Contact an Authorized Tennant Service Center for carbon brush replacement.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​‌‌‌​​​‌​⁠​​‌⁠‌​​​⁠‍‍​⁠⁠⁠‍‌​‌​⁠⁠‌‍‍⁠

ec-H2O MODULE FLUSH PROCEDURE

This procedure is only required when an alarm sounds and the ec-H2O system indicator light begins to blink red.

1. Drain the solution tank and recovery tank of all water.
2. Pour 1 gallon (4 liters) of white or rice vinegar into the solution tank at full strength. Do not dilute.

3. Disconnect the black connector fitting at the scrub head and place the hose into a bucket (Figure 48).

4. Turn the key to the on ( I ) position.

MAINTENANCE

5. Press and release the ec-H2O module flush switch to start the flush cycle (Figure 49). The module is located under the recovery tank.

Repeat flush procedure if the ec-H2O module does not reset. If module fails to reset, contact an Authorized Service Center.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​‌‌‍​​​‌​⁠​​‍‍⁠⁠‍⁠‌‍‌‍⁠​‍⁠⁠​​⁠⁠​‌‍⁠‌

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. Loosen the band clamp and remove the band from the squeegee assembly (Figure 50).

3. Rotate the rear blade to a new wiping edge and reinstall the band. Make sure the notched edge of the band is facing downward (Figure 51).

4. To replace the front blade, remove the rear band and fully loosen the four squeegee assembly knobs, do not remove the knobs. Lift and tilt the retainer plate to access the front blade (Figure 52). Rotate the front blade to a new wiping edge and return the retainer plate. Make sure the retainer plate tabs engage the blade slots. Reinstall the band then retighten the knobs.

MAINTENANCE

SQUEEGEE BLADE ADJUSTMENT

The squeegee blade adjustment is factory set, but may require periodic adjustment.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​‌‌⁠​​​‌​⁠​​‌⁠​⁠⁠​‌​​​⁠‍⁠⁠‌‍‌​‍‌‌‍⁠‌

For optimum squeegee blade performance, the squeegee assembly casters must be adjusted to a specified height as described below.

1. To check the squeegee assembly for proper adjustment, remove the squeegee assembly from the machine and place it on a level surface. Measure the distance between the caster and the surface. It should measure approximately 2 mm (1/16”) (Figure 53).
2. To adjust the caster height, loosen the top nut and remove the plastic bearing cover to access the adjustment nut. Turn the adjustment nut until properly adjusted (Figure 53). After adjusting, tighten the top nut and replace the plastic bearing cover. Repeat step for the other caster.

3. During machine operation, with the casters properly adjusted, the squeegee blades should deflect as shown (Figure 54).

BATTERY MAINTENANCE (Wet/lead acid batteries)

1. Check battery fluid level frequently to prevent battery damage. The fluid should be at the level shown (Figure 55). Add distilled water if low. DO NOT OVERFILL, the fluid may expand and overflow when charging.

CORRECT BATTERY FLUID LEVEL:

2. Clean the batteries to prevent battery corrosion. Use a scrub brush with a mixture of baking soda and water (Figure 56).

Transporting Machine

When transporting the machine by trailer or truck, be certain to follow the transporting procedure below:‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​‌‍​​​​‌​⁠​​​⁠​​‌‌‍‍‍‌⁠‌​‍‍​⁠⁠‌‍⁠‍‍‌

1. Drain machine tanks.
2. Raise the scrub head and hang squeegee on squeegee storage bracket.
3. Load the machine using a ramp that can support the machine weight and person loading it. The maximum ramp incline should not exceed 15% at a ramp length of 12 ft (3.7m).
4. Position the front of machine up against the front of the trailer or truck. Lower the scrub head.
5. Place a block behind each wheel to prevent the machine from rolling.
6. Secure with tie-down straps as shown (Figure 57). It may be necessary to install tie-down brackets to trailer or truck.

Storing Machine

1. Charge the batteries before storing. Never store the machine with discharged batteries.
2. Drain and rinse the tanks thoroughly.
3. Store the machine in a dry area with the squeegee and scrub head in the up position.
4. Open the recovery tank cover to promote air circulation.

5. If storing machine in freezing temperatures, follow the FREEZE PROTECTION instructions below.

Freeze Protection

1. Drain the solution tank and recovery tank of all water.
2. Pour 1 gallon / 4 liters of recreational vehicle (RV) antifreeze into the solution tank at full strength. Do not dilute.

3. Turn the machine power on and operate the solution flow system. Turn the machine off when the red RV antifreeze is visible.

Continue with the freeze protection procedure if machine is equipped with the ec-H2O system.

ec-H2O Model:

Press and release the flush switch on the ec-H2O module to cycle the antifreeze through ec-H2O system (Figure 58). When the antifreeze is visible, press the switch again to turn off the module.

If the antifreeze is not properly flushed from the ec-H2O system, the ec-H2O module may detect an error and not function (ec-H2O switch indicator light will turn red). If this occurs, reset key and repeat the flush procedure as described below.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​‌‍‌​​​‌​⁠​​​‍⁠‍‍⁠‍⁠​⁠​‍‌‍​‍‍​⁠‍​‍‍‍

Flushing antifreeze from ec-H2O module:

1. Drain the antifreeze from the solution tank into a bucket.
2. Fill the solution tank with cool water until full (See FILLING SOLUTION TANK).
3. Disconnect the black connector fitting at the scrub head and place the hose into a bucket (Figure 59). To access the connector fitting, you may have to remove the front cover from the machine.

4. Press and release the ec-H2O module switch to flush the antifreeze from the ec-H2O system (Figure 58). The module is located under the recovery tank.
   When the water turns clear, press the module switch again to stop the flush cycle.

Dispose the antifreeze in an environmentally safe way according to local waste disposal regulations.

5. The machine is now ready for scrubbing.

MAINTENANCE

TROUBLESHOOTING

TROUBLESHOOTING - continued

MAINTENANCE

BATTERY METER LED FAULT CODES

SPECIFICATIONS

* Run times are based on Continuous Scrubbing Run Times.
** Sound levels (ISO 11201) as recommended by the American Association of Cleaning Equipment Manufacturers (AACEM) and OSHA.‌‌​⁠⁠‌​‍‌‍‍‌‍‌‍‍​‌​‍​​​​​‌⁠‌​​​‌​⁠​​​‌​⁠⁠⁠​‍​‌​​‍‍‍​‍‍​⁠⁠​⁠⁠

* If the optional solution flow rates are required, contact an Authorized Service Center.

SPECIFICATIONS

MACHINE DIMENSIONS