NOBLES Speed Scrub 300 SS300 Walk Behind Floor Scrubber Instruction Manual

: June 15, 2024
: NOBLES

Table of Contents

NOBLES Speed Scrub 300 SS300 Walk Behind Floor Scrubber
Product Information
Product Usage Instructions
FAQs
INTRODUCTION
OPERATION
MAINTENANCE
TROUBLESHOOTING
SPECIFICATIONS
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NOBLES Speed Scrub 300 SS300 Walk Behind Floor Scrubber

Product Information

Walk-Behind Floor Scrubber R

Specifications

Model No.: [Model Number]
Serial No.: [Serial Number]
Installation Date: [Installation Date]

Introduction:

This manual is provided with each new model of the Walk-Behind Floor Scrubber R. It contains necessary operation and maintenance instructions. It is important to read this manual completely and understand the machine before operating or servicing it. By following the instructions provided, the machine will provide excellent service and minimize costs.

Protect the Environment:

It is important to dispose of packaging materials and used machine components such as batteries in an environmentally safe way according to local waste disposal regulations. Remember to recycle whenever possible.

Intended Use:

The Walk-Behind Floor Scrubber R is designed for commercial use in various settings such as hotels, schools, hospitals, factories, shops, offices, and rental businesses. It is specifically intended for scrubbing hard floor surfaces (concrete, tile, stone, synthetic, etc.) in indoor environments. Please note that this machine is not suitable for cleaning carpets or sanding wood floors. Only use recommended pads/brushes and commercially available floor cleaning detergents. It is important to strictly follow the instructions provided in the Operator Manual.

Machine Data:

Please fill out the following information at the time of installation for future reference:

Model No.: [Model Number]
Serial No.: [Serial Number]
Installation Date: [Installation Date]

Uncrating Machine:

When uncrating the machine, carefully check for any signs of damage. If any damages are found, report them immediately to the carrier. Contact the distributor or Tennant for any missing items. To uncrate the machine, follow these steps:

Remove the straps, wheel blocks, and shipping brackets.
Using the supplied ramp, carefully back the machine off the pallet.
Ensure that the scrub head is in the raised position.

Attention: Do not remove the machine from the pallet without using the ramp as it may cause machine damage.

Product Usage Instructions

Operation

Important Safety Instructions:

Before operating the Walk-Behind Floor Scrubber R, it is crucial to read and understand the important safety instructions. These instructions ensure the safe and proper use of the machine. Save these instructions for future reference.

Safety Labels:

The Walk-Behind Floor Scrubber R is equipped with safety labels that provide important information and warnings. Familiarize yourself with these labels to ensure safe operation.

Machine Components:

The Walk-Behind Floor Scrubber R consists of various components that are essential for its operation. Familiarize yourself with these components to understand their functions and proper usage.

Machine Symbols:

The Walk-Behind Floor Scrubber R uses symbols to indicate specific functions or actions. Understand these symbols to operate the machine correctly.

Control Panel Components:

The Walk-Behind Floor Scrubber R features a control panel with various components that control the machine’s operations.
Familiarize yourself with these components for proper machine control.

Control Panel:

The control panel of the Walk-Behind Floor Scrubber R includes various buttons, switches, and indicators. These components allow you to control and monitor the machine’s functions.

Installing Batteries:

If applicable, follow the instructions provided to install the batteries in the Walk-Behind Floor Scrubber R. Proper installation ensures optimal performance and operation of the machine.

Battery Pack Lift-Out Tray (Option):

If available, follow the instructions provided to use the battery pack lift- out tray for easy battery maintenance and replacement.

How the Machine Works:

Understand the operational principles of the Walk-Behind Floor Scrubber R to use it effectively. This section explains how the machine functions to achieve optimal cleaning results.

Brush and Pad Information:

Proper selection and usage of brushes and pads are essential for efficient scrubbing. This section provides information on the recommended brushes and pads for different floor surfaces and cleaning requirements.

Machine Operation:

Pre-Operation Check List:

Prior to operating the Walk-Behind Floor Scrubber R, perform a pre-operation check to ensure all necessary components are in proper working condition. This checklist helps ensure safe and efficient machine operation.

Operating Machine:

Follow the instructions provided to operate the Walk-Behind Floor Scrubber R. This section covers starting, stopping, and maneuvering the machine for effective floor cleaning.

While Operating Machine:

During machine operation, certain precautions and actions need to be taken to ensure safe and efficient performance. Refer to this section for instructions on various aspects to consider while operating the machine.

Emergency Shut-Off Button (Drive models):

If applicable, familiarize yourself with the location and usage of the emergency shut-off button. This button is designed to quickly stop the machine in case of an emergency.

Battery Discharge Indicator:

The battery discharge indicator provides information about the battery’s remaining charge. Understand how to interpret the indicator to monitor battery usage and plan recharging accordingly.

Circuit Breaker Panel:

The circuit breaker panel houses the machine’s circuit breakers. Familiarize yourself with its location and function to quickly address any electrical issues that may arise.

Hour Meter:

The hour meter tracks the machine’s operating hours. This information is useful for maintenance and service scheduling. Learn how to read and interpret the hour meter.

FAQs

Q: Can this machine be used on carpets?

A: No, the Walk-Behind Floor Scrubber R is not intended for cleaning carpets. It is designed specifically for scrubbing hard floor surfaces.

Q: Can I use any floor cleaning detergents with this machine?

A: It is recommended to use commercially available floor cleaning detergents that are compatible with the Walk-Behind Floor Scrubber R. Follow the instructions provided to ensure proper usage.

Q: Are the pads and brushes included with the machine?

A: Pads and brushes are not typically included with the machine.
It is necessary to purchase recommended pads and brushes separately for specific floor surfaces and cleaning requirements.

Q: How often should I perform maintenance on the machine?

A: Regular maintenance is crucial for optimal machine performance. Follow the maintenance instructions provided in the Operator Manual for recommended maintenance intervals and procedures.

ENGLISH
®
SPEED SCRUB® 300
WALK- BEHIND FLOOR SCRUBBER R
OPERATOR MANUAL

For the latest Parts manuals and other language Operator manuals, visit: www.nobles.com/manuals

9014512 Rev. 02 (10-2022)
9014512

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:
S The machine is operated with reasonable care.
S The machine is maintained regularly – per the
maintenance instructions provided.
S The machine is maintained with manufacturer
supplied or equivalent parts.
To view, print or download manuals online visit www.nobles.com/manuals
PROTECT THE ENVIRONMENT Please dispose of packaging materials and used machine components such as batteries in an environmentally safe way according to your local waste disposal regulations.
Always remember to recycle.

INTENDED USE
The automatic floor scrubber is intended for commercial use, for example in hotels, schools, hospitals, factories, shops, offices and rental businesses. It is designed to scrub hard floor surfaces (concrete, tile, stone, synthetic, etc.) in an indoor environment. This machine is not intended for cleaning carpets or sanding wood floors. Use only recommended pads/brushes and commercially available floor cleaning detergents. Do not use this machine other than described in this Operator Manual.
MACHINE DATA
Please fill out at time of installation for future reference. Model No. –
Serial No. –
Installation Date –
SERIAL NUMBER LOCATION

Tennant Company 10400 Clean Street Eden Prairie, MN 55344- 2650 USA Phone: (800) 553- 8033 www.nobles.com
Trojan is a registered trademark of Trojan Battery Company. Specifications and parts are subject to change without notice. Original Instructions. Copyright E2015- 2022 Tennant Company. All rights reserved.
2

UNCRATING MACHINE
Carefully check machine for signs of damage. Report damages at once to carrier. Contact distributor or Tennant for missing items. To uncrate the machine, remove straps, wheel blocks and shipping brackets. Using the supplied ramp carefully back the machine off the pallet. Make sure scrub head is in the raised position. ATTENTION: Do not remove machine from pallet without using ramp, machine damage may occur.
Nobles Speed Scrub 300 (10- 2022)

OPERATION

IMPORTANT SAFETY INSTRUCTIONS – SAVE THESE INSTRUCTIONS

The following warning precautions are used throughout this manual as indicated in their description:
WARNING: To warn of hazards or unsafe
practices which could result in severe personal injury or death.
FOR SAFETY: To identify actions which must be followed for safe operation of equipment.
The following information signals potentially dangerous conditions to the operator. Know when these conditions can exist. Locate all safety devices on the machine. Report machine damage or faulty operation immediately.
WARNING: To Reduce the Risk of Fire,
Explosion, Electric Shock or Injury:
– Read manual before operating machine.
– Do not use or pick up flammable materials.
– Do not use near flammable liquids, vapors or combustible dusts. This machine is not equipped with an explosion proof motor. The electric motor 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.
– Batteries emit hydrogen gas. Explosion or fire can result. Keep sparks and open flame away when charging.
– Disconnect battery cables and charger cord before cleaning and servicing machine.
– Do not charge batteries with damaged cord. Do not modify plug.
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.
– Do not use outdoors. Store indoors.
– Spinning pad/brush, keep hands away.
WARNING: Magnetic Field Hazard. Magnetic pad driver/brush can be harmful to pacemaker wearers or medical implants.
IRIS Telemetry (option): 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 SAFETY:
1. Do not operate machine:
– Unless trained and authorized. – Unless operator manual is read and
understood. – Unless mentally and physically capable of
following machine instructions. – Under the influence of alcohol or drugs.
– While using a cell phone or other types of electronic devices.
– If not in proper operating condition. – In outdoor areas. This machine is for
indoor use only.
– In areas where flammable vapors/liquids or combustible dusts are present.
– With pads or accessories not supplied or approved by Tennant. The use of other pads may impair safety.
– In areas with possible falling objects.
– In areas that are too dark to safely see the controls or operate machine.
2. Before operating machine:
– Check machine for fluid leaks. – Make sure all safety devices are in place
and operate properly.
3. When operating machine:
– Use only as described in this manual. – Report machine damage or faulty operation
immediately. – Wear closed- toe, non- slip work shoes.
– Reduce speed when turning. – Go slowly on inclines and slippery
surfaces. – Do not scrub on inclines that exceed 9%
grade or transport on inclines that exceed 21% grade. – Follow site safety guidelines concerning wet floors. – Follow mixing, handling and disposal instructions on chemical containers. – Do not carry passengers on machine. – Use care when reversing machine.
– Keep children and unauthorized persons away from machine.
– Do not allow machine to be used as a toy.

4

Nobles Speed Scrub 300 (10- 2022)

4. Before leaving or servicing machine: – Stop on level surface. – Set the parking brake, if equipped. – Turn off machine and remove key.
5. When servicing machine: – Disconnect battery connection and charger cord before working on machine. – All work must be done with sufficient lighting and visibility. – All repairs must be performed by trained personnel. – Use Tennant supplied or approved replacement parts. – Do not modify the machine from its original design. – Do not jack up machine. – Avoid moving parts. Do not wear loose clothing or jewelry and secure long hair. – 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 cycle, disconnect the AC power supply cord first. – Do not use incompatible battery chargers as this may damage battery packs and potentially cause a fire hazard. – Inspect charger cord regularly for damage. – Keep work area well ventilated. – Avoid contact with battery acid. – Keep all metal objects off batteries. – Do not power spray or hose off machine. – Use a hoist or adequate assistance when lifting batteries. – Battery installation must be done by trained personnel. – Wear personal protection equipment as needed and where recommended in this manual.
For Safety: wear protective gloves.
For Safety: wear eye protection.

OPERATION
6. When loading/unloading machine onto/off truck or trailer: – Drain tanks before loading machine. – Use a ramp, truck or trailer that can support the machine weight and operator. – Do not operate the machine on a ramp incline that exceeds a 21% grade level. – Use a winch if ramp incline exceeds a 21% grade level. – Lower the scrub head and squeegee before tying down machine. – Turn machine off and remove key. – Set parking brake (if equipped). – Block machine wheels. – Use tie- down straps to secure machine.

Nobles Speed Scrub 300 (03- 2015)

5

OPERATION
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.

WARNING LABEL Spinning pad. Keep hands away.
Located on disk scrub head model.

FOR SAFETY LABEL Do not power spray or hose off machine. Electrical malfunction may occur.
Located on control console

WARNING LABEL Spinning brush. Keep hands away.
Located on cylindrical scrub head model.

WARNING LABEL Magnetic Field Hazard. Magnetic pad driver/brush can be harmful to pacemaker wearers or medical implants. Located on Insta-Click magnetic pad driver/brush.
6

WARNING LABEL Electrical hazard. Disconnect battery cables before servicing machine.
Located on circuit breaker panel.

WARNING LABEL Batteries emit hydrogen gas. Explosion or fire can result. Keep sparks and open flame away when charging. Located on bottom side of recovery tank.
Nobles Speed Scrub 300 (02- 2017)

OPERATION

MACHINE COMPONENTS

1

27

2

3

Scrub Head Types

4

17 in / 43cm 20 in / 50cm 24 in / 60cm

20 in / 50cm

Disk

Dual Disk

Cylindrical

Orbital

5

7

14

13

16

15

17

24

18 20
22

6

19

8
9
10
11
12
1. Cup holder/tray 2. Recovery tank lid 3. Recovery tank 4. Solution tank fill-port 5. Solution tank 6. Scrub head 7. Battery compartment 8. Accessory rail(s) 9. On-board battery charger cord hooks 10. Scrub head lift pedal 11. Squeegee foot pad 12. Squeegee assembly 13. Control handle 14. Control handle start bail 15. Speed control knob (drive model) 16. Forward/Reverse lever (drive model) 17. Control panel display 18. Emergency stop button (option)
Nobles Speed Scrub 300 (10- 2022)

25

23

21

26 24

19. Hour meter 20. Key switch 21. Off-board battery charger receptacle 22. Recovery tank drain hose 23. Solution tank level/drain hose 24. Parking brake (option) 25. Dual down pressure lever (option) 26. Solution flow control knob 27. Circuit breaker panel splash guard.

7

OPERATION MACHINE SYMBOLS
Fast speed (drive model) Slow speed (drive model) Forward / Reverse (drive model) On Off ec-H2O scrubbing (option) Battery charge Do not lift by accessory rails
No step
Dual down pressure
Parking brake (option)
No detergent (ec-H2O option) Water temperature (ec-H2O option) Solution flow No Solution flow Circuit breaker Cloud Connectivity (Telemetry option)
8

CONTROL PANEL COMPONENTS
Control Panel
4

1

2

3

5

1. Service indicator – Lights up when a machine or charger fault is detected.

2. Parking brake indicator (option) – Lights up when parking brake lever is engaged. To turn off indicator, disengage parking brake lever near left rear wheel.

3. Battery discharge indicator (BDI) – The battery discharge indicator serves two functions. In normal scrub mode it displays the charge level of the batteries. It also, in conjunction when the service indicator is flashing, provides specific LED codes when a machine or charger fault is detected.

4. ec-H2O button / indicator (Option) – A blue ec- H2O indicator appears when the machine is equipped with ec- H2O option.

5. Telemetry Connectivity indicator (Option) Lights up blue when machine is connected to the cloud.

Nobles Speed Scrub 300 (10- 2022)

OPERATION

INSTALLING BATTERIES
WARNING: Batteries emit hydrogen gas. Explosion or fire can result. Keep sparks and open flame away when charging.
FOR SAFETY: When servicing machine, wear appropriate personal protection equipment as needed. Avoid contact with battery acid.
BATTERY SPECIFICATIONS Two 12 volt deep-cycle batteries. Contact distributor or Tennant for battery recommendations. FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped.
1. Lift the recovery tank to access the battery compartment (Figure 1).

BATTERY PACK LIFT- OUT TRAY (Option) Models equipped with the optional battery lift-out tray for quick or frequent battery pack exchange.
FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped.
WARNING: Batteries emit hydrogen gas. Explosion or fire can result. Keep sparks and open flame away when charging.
1. Disconnect the battery cable connection at machine (Figure 3).

FIG. 1
2. With adequate assistance, carefully install the batteries into the battery compartment. Arrange the batteries as shown (Figure 2).
FOR SAFETY: When servicing machine, use a hoist or adequate assistance when lifting batteries.
3. Using the supplied battery post boots, connect the cables to the battery posts as shown (Figure 2). Connect the machine’s black (- ) battery cable last. Use insulated tools when working near batteries.

FIG. 3
FOR SAFETY: When servicing machine, wear appropriate personal protection equipment as needed. Avoid contact with battery acid.
2. Using an approved lift strap that supports the weight of battery pack, connect the strap to the two lift brackets as shown. Using a lift hoist rated to handle the weight of the battery pack, carefully lift the battery packs to and from machine. Keep one hand on the battery lift-out tray when lifting for stability (Figure 4).
Before lifting battery pack, make sure the batteries are secured to the battery lift- out tray with the supplied battery strap as shown (Figure 4).

Machine Front

RED
BLACK FIG. 2
IMPORTANT: Make sure that the machine’s battery charger is properly set before charging. See BATTERY CHARGER SETTINGS.

FIG. 4
3. Reconnect the battery cable connection after installing battery pack.

Nobles Speed Scrub 300 (03- 2015)

9

OPERATION

HOW THE MACHINE WORKS
Conventional scrubbing: When using the conventional scrubbing mode, water and detergent mixture from the solution tank flows to the floor and the rotating brush(es)/pad(s) scrub the floor clean. As the machine moves forward, the squeegee with vacuum suction picks up the dirty solution from the floor into the recovery tank.
ec-H2O NanoClean Technology (option): When using the ec-H2O NanoClean technology, normal water passes through a module where it is electrically converted into a cleaning solution. The electrically converted water attacks the dirt, allowing the machine to easily scrub away the suspended soil. The converted water then returns to normal water in the recovery tank.

BRUSH AND PAD INFORMATION
For best cleaning results use the appropriate brush or pad for your cleaning application. Listed below are brushes and pads and the applications for which each is best suited.
NOTE: The amount and type of soilage play an important role in determining the type of brush or pad to use. Contact a Tennant representative for specific recommendations.
Soft nylon bristle scrub brush (White) Recommended for cleaning coated floors without removing finish. Cleans without scuffing.
Polypropylene bristle scrub brush (Black) This general purpose polypropylene bristle scrub brush is used for scrubbing lightly compacted soilage. This brush works well for maintaining concrete, wood and grouted tile floors.
Super abrasive bristle scrub brush (Gray) Nylon fiber impregnated with abrasive grit to remove stains and soilage. Strong action on any surface. Performs well on buildup, grease, or tire marks.
Polishing pad (White) Used to maintain highly polished or burnished floors.
Buffing pad (Red) – Used for light duty scrubbing without removing floor finish.
Scrubbing pad (Blue) – Used for medium to heavy-duty scrubbing. Removes dirt, spills, and scuffs and leaves surface clean ready for recoating.
Stripping pad (Brown) – Used for stripping of floor finish to prepare the floor for recoating.
Heavy duty stripping pad (Black) – Used for aggressive stripping of heavy finishes/sealers, or very heavy duty scrubbing.
Surface preparation pad (Maroon) – Used for very aggressive chemical free removal of floor finish to prepare the floor for re-coating

10

Nobles Speed Scrub 300 (03- 2015)

OPERATION

MACHINE SETUP
ATTACHING SQUEEGEE ASSEMBLY FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped. 1. Lift the squeegee mount bracket to the raised
position. Place toe under pedal to lift (Figure 5).

INSTALLING BRUSH/PAD – 3 Lug Disk
FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped.
1. Step down on the scrub head lift pedal to raise the scrub head off the floor (Figure 8).

FIG. 5
2. Mount the squeegee assembly to the squeegee mount bracket (Figure 6). Tighten knobs to secure squeegee assembly to bracket.

FIG. 8
2. Attach the pad to the pad driver before installing the disk (Figure 9). Secure pad with centerlock.
FOR SAFETY: Do not operate machine with pads or accessories not supplied or approved by Tennant. The use of other pads may impair safety.

FIG. 6
3. Connect the vacuum hose to the squeegee assembly (Figure 7).

FIG. 9
3. Single disk model – Position the three lugs into the motor hub slots and give the pad driver/brush a quick counter-clockwise turn to engage hub (Figure 10). View through the scrub head window to align lugs.

FIG. 7 Nobles Speed Scrub 300 (03- 2015)

FIG. 10
11

OPERATION
Dual disk model – Turn the brush motor hub until the lug slot with spring clip is visible. Position the three lugs into the motor hub slots and give the pad driver/brush a quick turn towards the spring clip (Figure 11). View through the scrub head window to align lugs. NOTE: The left and right disks engage the hubs in opposite directions.

INSTALLING BRUSH/PAD – Insta-Click Magnetic Disk (Option)
FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped.
WARNING: Magnetic Field Hazard. Magnetic pad driver/brush can be harmful to pacemaker wearers or medical implants.
1. Step down on the scrub head lift pedal to raise the scrub head off the floor (Figure 14).

FIG. 11
4. Single disk model – To remove the pad driver/brush, grip the disk and give it a quick turn in the direction as shown (Figure 12).

FIG. 14
2. Attach the pad to the pad driver before installing the driver (Figure 15). Secure pad with centerlock.
FOR SAFETY: Do not operate machine with pads or accessories not supplied or approved by Tennant. The use of other pads may impair safety.

FIG. 12
Dual disk model – To remove the pad driver/brush, grip the disk and give it a quick turn in the direction as shown (Figure 13).
FIG. 15
3. Place the pad driver/brush under the scrub head and lift into position. The Insta-Click pad driver/brush will automatically click into position (Figure 16).
FIG. 13

FIG. 16

12

Nobles Speed Scrub 300 (03- 2015)

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

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

FIG. 17
INSTALLING PAD – Orbital For best cleaning performance and to avoid damaging the pad driver plate or floor surface, always use backer pad with work pads (Figure 18).

FIG. 20
3. Attach the work pad to the backer pad (Figure 21).

Scrub head
Pad driver plate
Backer pad
Work pad
FIG. 18
FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped. 1. Step down on the scrub head lift pedal to raise the
scrub head off the floor (Figure 19).

FIG. 21
INSTALLING CYLINDRICAL BRUSHES
FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped. 1. Step down on the scrub head lift pedal to raise the
scrub head off the floor (Figure 22).

FIG. 19 Nobles Speed Scrub 300 (03- 2015)

FIG. 22
13

OPERATION
2. Remove the debris tray by sliding it out from the scrub head (Figure 23).
FIG. 23
3. Remove the idler plate from the scrub head by unscrewing the yellow knob (Figure 24).
FIG. 24
4. Slide the brushes into the scrub head and connect the slotted ends of each brush into the drive hubs (Figure 25).

FILLING SOLUTION TANK
FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped.
Remove the solution tank lid and fill the solution tank. Stop filling tank when the level reaches the “3/3” mark on the solution tank drain hose indicator (Figure 27).
ec-H2O Scrubbing – 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 60°C/140°F). 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.
WARNING: Flammable materials can cause an explosion or fire. Do not use flammable materials in tank(s).
ATTENTION: For Conventional Scrubbing, only use commercially approved cleaning detergents. Machine damage due to improper detergent usage will void the manufacturer’s warranty.

FIG. 25
5. Connect the idler plate to the brush ends and reattach the idler plate. Make sure the idler plate hooks are engaged before tightening knob (Figure 26).

FIG. 27
The solution tank fill- port is equipped with two hose clips to hold hose while filling. The two clips are different hose diameter sizes (Figure 28).

FIG. 26
6. Replace debris tray.
14

FIG. 28 Nobles Speed Scrub 300 (03- 2015)

OPERATION

ec-H2O NanoClean WATER CONDITIONING CARTRIDGE (ec-H2O model)
The ec-H2O system is equipped with a water conditioning cartridge (Figure 29). The cartridge is designed to protect the machine’s plumbing system from potential scaling.
The cartridge is required to be replaced when it reaches its maximum water usage or expiration time of when the cartridge was activated, which ever comes first.
Depending on machine usage a new cartridge can last anywhere from 12 to 24 months.
The control panel will signal a code when it’s time to replace cartridge. See SERVICE INDICATOR CODES for further details.

ACCESSORY RAIL
The machine is equipped with an accessory rail which also serves as the recovery tank and solution tank drain hose holder.
The accessory rail is designed to store the squeegee assembly and other accessory items (Figure 30).

FIG. 30
A debris bag hook is located on the left side of the control console (Figure 31).

FIG. 29
All cartridges are labeled with a manufacture date. The shelf-life of an un- installed cartridge is one year from manufacture date. For new cartridge replacement, the ecH2O module timer must be reset. See ec-H2O NanoClean WATER CONDITIONING CARTRIDGE REPLACEMENT.
ATTENTION: During first time use and after replacing the water conditioning cartridge, the ec-H2O system will automatically override the selected solution flow rate for up to 75 minutes.

FIG. 31
ATTENTION: Do not use the accessory rails to lift machine, damage may occur.
ATTENTION: Do not step on accessory rails, damage may occur.

Nobles Speed Scrub 300 (10- 2022)

15

OPERATION
MACHINE OPERATION
FOR SAFETY: Do not operate machine unless operator manual is read and understood.
PRE-OPERATION CHECK LIST – Sweep area and remove any obstructions. – Check brushes/pads for wear and damage. – Check squeegee blades for wear and damage. – Confirm recovery tank empty and screen and
debris tray is clean. – Check scrub head skirt for wear and damage. – Cylindrical brush model – confirm scrub head
debris tray is empty and clean. – ec-H2O Scrubbing: Confirm solution tank is filled
with clear cool water only. – ec-H2O Scrubbing: Ensure all conventional
cleaning agents/restorers are drained and rinsed from solution tank. – Check machine for proper operation.
OPERATING MACHINE 1. Release the parking brake lever, if equipped
(Figure 32) 2. Turn the key to the on ( I ) position (Figure 32).

ATTENTION: If cleaning detergent is accidentally cycled through ec-H2O system, immediately turn the ec-H2O system off. Drain solution tank, refill with cool water and operate the ec-H2O system to flush out detergent.

ec-H2O INDICATOR Solid blue Blinking blue/red
Solid or blinking red

FIG. 33
CONDITION
Normal operation
Water conditioning cartridge expired. Replace cartridge.
See Service Indicator Codes.

4. Lower the scrub head to the floor by stepping on the scrub head lift pedal as shown (Figure 34).

FIG. 32
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 33).
ATTENTION: During first time use and after replacing the water conditioning cartridge, the ec-H2O system will automatically override the selected solution flow rate for up to 75 minutes.

FIG. 34
5. Lower the squeegee assembly to floor by stepping on foot pad as shown (Figure 35). To raise squeegee assembly, place toe under foot pad and lift. The vacuum motor will start when squeegee assembly is lowered.
FIG. 35

16

Nobles Speed Scrub 300 (10- 2022)

6. Drive models – push the directional lever to the forward position to go forward (Figure 36). To reverse the machine pull the directional lever backwards.

OPERATION
9. To adjust the solution flow rate when ec-H2O scrubbing, press the solution flow button located on the ec-H2O module (Figure 39). One LED= low, two LED’s=medium, and three LED’s= high.

FIG. 36
7. To begin scrubbing, pull the start bail (Figure 37).

FIG. 39
10. To adjust the solution flow rate when conventional scrubbing, turn the solution flow control knob located underneath machine (Figure 40).
NOTE: The solution flow control knob is only functional when conventional scrubbing.

FIG. 37
8. Drive models – Adjust the scrubbing speed by turning the speed dial to the desired speed (Figure 38).
Push models – Slowly push the machine forward. The rotating brush(es) will help assist the machine forward.

FIG. 40
11. Speed Scrub 300 Option – When extra brush pressure is needed for heavily soiled areas lift the down pressure lever (Figure 41).
NOTE: Release the down pressure level when raising scrub head.

FIG. 38 Nobles Speed Scrub 300 (03- 2015)

FIG. 41
12. To stop scrubbing, release the start bail and raise the scrub head and squeegee assembly off floor. Turn key off and set parking brake, if equipped.
17

OPERATION

WHILE OPERATING MACHINE
WARNING: Flammable materials materials or reactive metals can cause an explosion or fire. Do not pick up.
1. Overlap each scrub path by 2 inches (5 cm).
2. Keep machine moving to prevent damage to floor finish.
3. Wipe squeegee blades with a cloth if blades leave streaks.
4. Avoid bumping the machine into posts and walls.
FOR SAFETY: When operating machine, do not scrub on inclines that exceed 9% grade or transport on inclines that exceed 21% grade.
5. Pour a recommended foam control solution into the recovery tank if excessive foam appears.
ATTENTION: Foam buildup will not activate the float shut-off screen, vacuum motor damage will result.
6. Use the double scrubbing method for heavily soiled areas. First scrub the area with the squeegee up, let solution set for 3-5 minutes, then scrub the area a second time with squeegee down.
7. Orbital Scrub Head Model – Use caution when working near the tile cove (Figure 42) and floor mounted fixtures such as pedestal sinks and other breakable items. Keep the metal scrub head edge away to avoid possible damage.

EMERGENCY SHUT-OFF BUTTON (Drive models) Push the emergency shut-off button in the event of an emergency (Figure 43). This red button shuts off all power to machine. To regain power, turn the button clockwise and restart the key. Only use this button in the event of an emergency. It is not intended for routine machine shutdown.
FIG. 43
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 44). When the discharge level reaches the red light, stop scrubbing and recharge the batteries. If the red light begins to flash, the scrubbing function will automatically shut off to protect the batteries from total discharge. Drive Model: The machine will still propel when the red light is flashing, this will allow user to transport machine to charging station.

Tile Cove

FIG. 42
8. When leaving the machine unattended, remove the key and set the parking brake, if equipped.
9. Do not operate machine in areas where the ambient temperature is above 110F/43C or below freezing 32F/0C.

FIG. 44

18

Nobles Speed Scrub 300 (10- 2022)

OPERATION

CIRCUIT BREAKER PANEL
The machine is equipped with resettable circuit breakers to protect the machine from a current overload. If a circuit breaker trips, disconnect the battery cable connection and reset the breaker by pressing the reset button after the breaker has cooled down. Reconnect the battery cable connection. If the circuit breaker does not reset or continues to trip contact service personnel.
The circuit breaker panel is located near the battery compartment and identified as described below (Figure 45).

Circuit Breaker
CB1 CB2 CB3 CB4 CB5 CB6

FIG. 45

Rating 4A 4A 4A 30 A 37 A 20 A

Circuit protected
Key switch, control board ec-H2O module ec-H2O pump Propel Brush motor Vacuum motor

FOR SAFETY: When servicing machine, all repairs must be performed by trained personnel.
The circuit breaker panel is protected by a splash guard. To access the circuit breaker panel when the recovery tank is in the down position lift the splash guard as shown (Figure 46).

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 47).
FIG. 47
DRAINING TANKS
FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped.
DRAINING RECOVERY TANK Drain and clean the recovery tank daily and between solution tank refills. 1. Transport the machine to drain area. 2. For models equipped with drain hose caps, hold
the hose upward, remove cap then slowly lower hose to drain. For models equipped with flow control valve drain hose, lower hose and slowly open valve to drain (Figure 48).

FIG. 46 Nobles Speed Scrub 300 (10- 2022)

FIG. 48
19

OPERATION
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 49).

DRAINING SOLUTION TANK
Drain the solution tank daily. 1. Transport the machine to drain area.
FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped.
2. To drain remaining water from solution tank, pull the solution hose from the accessory rail (Figure 52).

FIG. 49
4. Remove the debris tray and empty (Figure 50).

FIG. 50
5. Rinse out the recovery tank with clean water and wipe clean of any soil residue (Figure 51).

FIG. 52
Firmly reconnect the solution hose to accessory rail after draining tank.
3. Rinse out solution tank with clean water (Figure 53).

FIG. 51

FIG. 53
4. Remove the solution tank filter and clean screen after every 50 hours of use (Figure 54). Solution filter is located under machine at rear. Drain solution tank before removing filter.

FIG. 54

20

Nobles Speed Scrub 300 (03- 2015)

OPERATION
SERVICE INDICATOR CODES
When the machine or battery charger detects a fault, the service indicator will flash. A fault code will be provided to determine problem as described below. Control Panel

Flashing service indicator

Flashing LED fault code

LED Fault Code
= Flashing

CAUSE Emergency stop button activated.

S

Brush motor wiring, connector or control board problem.

S SS S

Vacuum motor wiring, connector or control board problem.

S S S Propel circuit breaker tripped.

S S S S S S SS S S

Software load failure.
Propel I-Drive fault Propel I-Drive communication lost Propel motor shorted fault
Brush motor over current

SOLUTION Release emergency stop button and restart machine. Contact service.
Contact service.
Disconnect battery and reset circuit breaker. If trip repeats, contact service. Contact service.
Restart machine. If fault repeats, contact service. Contact service.
Contact service.

SERVICE INDICATOR CODES – Continued

LED Fault Code

= Flashing

CAUSE

S S

Start bail is pulled or obstructed before turning machine on.

S S

Brush motor control board fault Vacuum motor control board fault

S Vacuum motor over current.

S S S Vacuum motor shorted fault.

S S Brush motor shorted fault.

Charger communication fault
S S Scrub control board comm. fault
ec-H2O system comm. fault

SOLUTION Release start bail or remove bail obstruction before turning machine on. Disconnect battery cable connection and contact service to replace control board. Contact service.
Contact service.
Contact service.
Restart. If fault code persists, contact service.

Nobles Speed Scrub 300 (10- 2022)

21

OPERATION

ON-BOARD BATTERY CHARGER SERVICE INDICATOR CODES

LED Fault Code
= Flashing S S S S S
SS S S

CAUSE Charger error condition. Charger is not connected to battery pack. Charger overheated.

S S Charger communication fault

S S

Charger timer exceeded maximum charging time. Interrupts charging cycle.

SOLUTION Contact service.
Check cable connections.
Let charger cool. Move to well ventilated area. Charge batteries in areas with temperatures 80F/27C or less. If fault persists, contact service. Restart charger. If fault code persists, contact service. Replace Batteries.

22

Nobles Speed Scrub 300 (03- 2015)

ec-H2O SYSTEM SERVICE INDICATOR CODES – OPTION Control Panel

OPERATION
Solid or blinking Red
ec-H2O indicator

Flashing service indicator

Flashing LED fault
code

LED Fault Code
= Flashing
S S

CAUSE ec-H2O system comm. fault

S SS

ec-H2O pump wiring, connector or control board problem.

S ec-H2O pump over current

S S S S ec-H2O pump shorted fault

S S S ec-H2O circuit breaker tripped

ecH2O indicator solid red
ecH2O indicator blinking red*
ecH2O indicator blinking blue/red

ec-H2O electrical faults ec-H2O water and plumbing faults Water conditioning cartridge expired

SOLUTION Restart. If fault code persists, contact service. Contact service.
Contact service. Contact service. Reset circuit breaker. If trip repeats, contact service. Contact service.
Contact service.
Replace water conditioning cartridge.

*Verify if cleaning detergent was added to solution tank. If ec-H2O system was operated with cleaning detergent, drain solution tank, add clear water and operate the ec-H2O system until the fault code clears.

Nobles Speed Scrub 300 (10- 2022)

23

MAINTENANCE

MAINTENANCE CHART

3 12

1 12

15

7

9

4

6

14

10

8

11

1

1
Interval Daily

13 9

2 14

Person
Resp. Key

O

1 Pad(s)

Description

O

1 Brush(es)

O

2 Cylindrical Brushes

O

3 Recovery tank

O

Weekly

O

50 Hours

O

100 Hours

O

200 Hours

O

500 Hours

T

750 Hours

T

1250 Hours T

T

4 Solution tank 6 Squeegee 7 Batteries 8 Debris trough 9 Scrub head skirt 7 Battery cells 6 Squeegee assembly drip trap reservoir 2 Cylindrical brushes. 2 Cylindrical scrub head 3 Recovery tank lid seal 10 Solution tank filter 7 Battery watering system (option) 7 Batteries, terminals and cables 11 Lower orbital isolators 12 Vacuum motor 13 Propel motor 14 Brush motor 15 Brush belt

O = Operator T = Trained Personnel

15
Procedure Check, flip or replace Check, clean Check, clean Drain, rinse, clean float shut-off screen and debris tray if equipped Drain, rinse Clean, check for damage and wear Charge if necessary Clean Check for damage and wear Check electrolyte level Check, clean Rotate brushes. Check for wear Clean underside of scrub head Check for wear. Clean Check hoses for damage and wear Check and clean Replace (4 qty) Replace carbon brushes Replace carbon brushes Replace carbon brushes Replace belt

24

Nobles Speed Scrub 300 (03- 2015)

MACHINE MAINTENANCE
To keep the machine in good working condition, simply perform the following maintenance procedures. FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped. FOR SAFETY: When servicing machine wear personal protection equipment as needed. All repairs must be performed by trained personnel
AFTER DAILY USE
1. Drain and rinse out the recovery tank (Figure 55). See DRAINING TANKS.

MAINTENANCE
4. Drain and rinse out the solution tank (Figure 58).
FIG. 58
5. Disk scrub head – Turn pad over or replace when worn (Figure 59).

FIG. 55
2. Remove the debris tray and empty (Figure 56).

FIG. 59
Orbital scrub head – Turn the work pad over or replace when worn (Figure 60).

FIG. 56
3. Remove and clean the float shut-off screen (Figure 57).

FIG. 60
6. Insta-Click pad driver/brushes – clean any debris buildup from hub connection area (Figure 61).

FIG. 57 Nobles Speed Scrub 300 (03- 2015)

FIG. 61
25

MAINTENANCE
7. Wipe the squeegee blades clean. Inspect blades for wear and damage (Figure 62). Rotate blade if worn. See SQUEEGEE BLADE REPLACEMENT.

11. Charge batteries (Figure 66). See BATTERIES.

FIG. 62
8. Check the scrub head skirt for wear or damage (Figure 63). Replace if worn or damaged.

FIG. 66
AFTER WEEKLY USE 1. Check the electrolyte level in all batteries (Figure
67). See BATTERIES.

FIG. 63
9. Clean the outside surface of the machine with an all purpose cleaner and damp cloth (Figure 64).

FIG. 67
2. Remove the drip trap cover from the squeegee assembly and clean reservoir (Figure 68).

FIG. 64
10. Cylindrical scrub head – Remove and clean debris trough (Figure 65).

FIG. 68

FIG. 65
26

Nobles Speed Scrub 300 (03- 2015)

AFTER EVERY 50 HOURS OF USE
1. Remove the solution tank filter and clean screen (Figure 69). Turn the filter bowl counter-clockwise to remove. Make sure to drain solution tank before removing filter.

MAINTENANCE
4. Inspect and clean the seal on the recovery tank lid (Figure 72). Replace seal if damaged.

FIG. 69
2. Cylindrical brushes – Rotate brushes from front to rear (Figure 70). Replace brushes when they no longer clean effectively.

FIG. 72
AFTER EVERY 100 HOURS OF USE If machine is equipped with the optional battery watering system, check the watering hoses and connections for damage and wear (Figure 73). Replace system if damaged.
FOR SAFETY: When servicing batteries, wear personal protection equipment as needed. Avoid contact with battery acid.

FIG. 70
3. Cylindrical scrub head – Remove debris buildup from underside of scrub head (Figure 71).
FIG. 71

FIG. 73

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

Carbon Brush Replacement Vacuum motor Propel motor (drive model) Disk brush motor Cylindrical brush motor Orbital brush motor

Hours 750 1250 1250 1250 1250

Nobles Speed Scrub 300 (03- 2015)

27

MAINTENANCE

BELTS FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped. Replace belts every 1250 hours. Contact trained personnel for belt replacement (Figure 74). Cylindrical Brush Drive Belt
Dual Disk Brush Drive Belt
FIG. 74
ORBITAL SCRUB HEAD ISOLATORS FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped. Replace the four lower vibration isolators every 500 hours. The lower isolators (hidden) are located between the deck plate the driver plate. Contact trained personnel for isolator replacement (Figure 75).
FIG. 75

BATTERIES
FOR SAFETY: Before servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped.
The lifetime of the batteries depends on their proper maintenance. To get the most life from the batteries;
S Do not charge the batteries more than once a day
and only after running the machine for a minimum of 15 minutes.
S Do not leave the batteries partially discharged for
long period of time.
S 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.
S Allow the charger to complete charging the batteries
before re-using the machine.
S Maintain the proper electrolyte levels of flooded (wet)
batteries by checking levels weekly.
Your machine is equipped with either flooded (wet) lead-acid or maintenance- free batteries supplied by Tennant.
FOR SAFETY: When servicing machine, keep all metal objects off batteries. Avoid contact with battery acid.
MAINTENANCE-FREE BATTERIES
Maintenance-free (Sealed AGM) batteries do not require watering. Cleaning and other routine maintenance is still required.
FLOODED (WET) LEAD-ACID BATTERIES The flooded (wet) lead-acid batteries require routine watering as described below. Check the battery electrolyte level weekly.
NOTE: Do Not check the electrolyte level if the machine is equipped with the optional battery watering system. Proceed to the BATTERY WATERING SYSTEM.
The electrolyte level should be slightly above the battery plates as shown before charging (Figure 76). 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 3 mm (0.12 in) below the sight tubes.

28

Nobles Speed Scrub 300 (03- 2015)

MAINTENANCE

Before Charging

After Charging

FIG. 76
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 77). Do not remove battery caps when cleaning batteries.

FIG. 77

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.
FOR SAFETY: The use of incompatible battery chargers may damage battery packs and potentially cause a fire hazard.
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.
1. Transport the machine to a well-ventilated area.
WARNING: Batteries emit hydrogen gas. Explosion or fire can result. Keep sparks and open flame away when charging.
2. Park the machine on a flat, dry surface, turn off machine and remove key.
FOR SAFETY: When servicing batteries, stop on level surface, turn off machine, remove key and set parking brake if equipped.
3. If the machine is equipped with flooded (wet) leadacid batteries check the battery electrolyte level weekly before charging. See FLOODED (WET) LEAD-ACID BATTERIES.
4. For models equipped with on-board chargers, remove the charger’s power cord from the storage hooks and plug power cord into a properly grounded wall outlet (Figure 78).

Nobles Speed Scrub 300 (03- 2015)

FIG. 78
29

MAINTENANCE
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 79). 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.
FIG. 79
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 80).
FIG. 80
6. After charging batteries unplug the power supply cord and wrap cord around the cord hooks (Figure 81). For models equipped with an off-board charger, always disconnect the AC power supply cord first before disconnecting charger from machine.

BATTERY CHARGER SETTINGS
The battery charger is set to charge the battery type supplied with your machine. If you choose to change to a different battery type or capacity, the charger’s charging profile must be changed to prevent battery damage.
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 machine’s battery discharge indicator must be reprogrammed to match charger settings (See OFF-BOARD BATTERY CHARGER below).
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 is required, contact service. As an alternative, the charger settings may be manually changed as describe below. 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 battery cables (Figure 82).

FIG. 81
30

Nobles Speed Scrub 300 (02- 2017)

MAINTENANCE
5. Remove the black cap from bottom side of charger to access the profile dial (Figure 85)

FIG. 82
2. Unwrap the battery charger power cord from the cord hooks.
3. Using a T25 star screwdriver, remove the two screws located at the bottom of the control console to access battery charger (Figure 83).

FIG. 85
6. Using a small standard screwdriver, turn the dial to the appropriate battery type according to the following chart (Figure 86).

FIG. 83
4. Disconnect the battery cable, power cord and wire harness from charger. Using a T25 star screwdriver, remove the four screws that mount charger to machine (Figure 84). Remove charger from machine.
FIG. 84

FIG. 86

Dial Position
0 1 2 3
4
5 6

Battery Description Settings with AH Ranges
CAN- BUS setting* Wet, Trojan 105- 155 AH Wet, Enersys/Tab 105- 155 AH AGM, Discover 80- 150 AH AGM, Fullriver 80- 150 AH AGM, TPPL, Enersys 20- 40 AH Gel, Sonnenschein 80- 150 AH

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.
7. Replace the black cap on charger, reinstall battery charger and replace control console.
8. Reconnect the battery cable connection.
9. 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.

Nobles Speed Scrub 300 (02- 2017)

31

MAINTENANCE
MANUAL BATTERY WATERING SYSTEM (Trojan Battery OPTION) The following instructions are for models equipped with the manual battery watering system option.
Kit p/n 9021730

3. If the level indicator has a low white float add water as described in the following instructions. (Figure 88).

Low Float = Add Water High Float = Full
FIG. 88
4. Locate the battery fill hose coupler inside the battery compartment. Remove the dust cap and connect the hand pump hose (Figure 89).

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.
FOR SAFETY: When servicing machine, wear personal protection equipment as needed. Avoid contact with battery acid.
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 87).

FIG. 89
5. Submerge the other end of the hand pump hose into a bottle of distilled water (Figure 90).
Distilled Water FIG. 90

Level Indicator Float
FIG. 87
32

Nobles Speed Scrub 300 (10- 2022)

6. Squeeze the bulb on the hand pump hose until firm. The indicator float will rise when full (Figure 91).

MAINTENANCE
3. Remove worn blade(s) from the blade retainer (Figure 93).

High Float = Full
FIG. 91
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.
SQUEEGEE BLADE REPLACEMENT
FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped. 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 92). To loosen the knobs quickly, squeeze the blade retainer and squeegee frame together.

FIG. 93
4. Rotate the rear blade to a new wiping edge (Figure 94). Make sure to align the slots in the blade with retainer tabs.
FIG. 94
5. Squeeze the squeegee frame and blade retainer together and re-tighten the two outside knobs (Figure 95).

FIG. 92

FIG. 95

Nobles Speed Scrub 300 (10- 2022)

33

MAINTENANCE
ec-H2O NanoClean WATER CONDITIONING CARTRIDGE REPLACEMENT
FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped. 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. ATTENTION: During first time use and after replacing the water conditioning cartridge, the ec-H2O system will automatically override the selected solution flow rate for up to 75 minutes. 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 96). Drain recovery tank before lifting tank.
FIG. 96
3. Disconnect the two hose connectors from the top of the cartridge by pressing the gray collars inward and pulling the connectors outward (Figure 97). Lift cartridge to remove.
Gray Collar

4. Fill in the installation date on the new cartridge label (Figure 98).

FIG. 98
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 99).
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 99).
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.

Service switch

3 indicator lights

Solution flow button FIG. 99

FIG. 97
34

Nobles Speed Scrub 300 (03- 2015)

MAINTENANCE

LOADING/UNLOADING MACHINE FOR TRANSPORTING
When transporting the machine by use of trailer or truck, carefully follow the loading and tie-down procedure: 1. Raise the scrub head and remove squeegee
assembly. 2. Use a ramp that can support the machine weight
and operator and carefully load machine. Do not operate the machine on a ramp incline that exceeds a 21% grade level (Figure 100). A winch must be used when ramp incline exceeds a 21% grade level. FOR SAFETY: When loading/unloading machine onto/off truck or trailer, use a ramp that can support the machine weight and operator. FOR SAFETY: Do not operate the machine on a ramp incline that exceeds a 21% grade level.
FIG. 100
3. Once loaded, position the front of the machine up against the front of the trailer or truck. Lower the scrub head, turn key off and set parking brake, if equipped (Figure 101).
4. Place a block behind each wheel (Figure 101). 5. Using tie-down straps, secure the machine using
the four tie-down brackets located on the machine frame (Figure 101). It may be necessary to install tie-down brackets to the floor of your trailer or truck. ATTENTION: Do not use control console area or accessory storage rails for tie-down locations, damage may occur.

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.
NOTE: To prevent potential machine damage store machine in a rodent and insect free environment.
FREEZE PROTECTION
Storing machine in freezing temperatures.
1. Completely drain solution tank and recovery tank.
2. Empty the water from the solution tank filter located under machine. Replace filter.
3. Pour 1 gallon / 4 liters of propylene glycol based recreational vehicle (RV) antifreeze into the solution tank.
4. Turn machine on and operate the solution flow system. Turn the machine off when the antifreeze is visible on floor.
Models equipped with ec-H2O option – Operate ec-H2O scrubbing to cycle antifreeze through system.
5. After storing machine in freezing temperatures, drain any remaining antifreeze from the solution tank. Add clean water to solution tank and operate the machine to flush system.

FIG. 101

Nobles Speed Scrub 300 (02- 2017)

35

MAINTENANCE

TROUBLESHOOTING

PROBLEM

CAUSE

SOLUTION

Service indicator icon is Machine or on-board battery charger See SERVICE INDICATOR CODES

blinking

fault has been detected

ec-H2o indicator icon is ec-H2O system fault has been

red or blinking red

detected

See SERVICE INDICATOR CODES

Machine will not operate Emergency stop button activated

Turn button to reset

Machine fault detected

See SERVICE INDICATOR CODES

Batteries discharged

Recharge batteries

Loose battery cable(s)

Tighten loose cables

Faulty battery(s)

Replace battery(s)

Faulty key switch

Contact service

Faulty start bail switch

Contact service

Circuit breaker tripped

Reset circuit breaker

Faulty control board

Contact service

On-board battery charger Plug not connected to power supply

will not operate

Batteries over discharged

Check plug connection Replace batteries

Battery charger fault detected

See SERVICE INDICATOR CODES

Faulty charger

Replace charger

Machine will not propel (Drive Model)

Propel fault has been detected. Circuit breaker tripped

See SERVICE INDICATOR CODES Reset circuit breaker

Faulty propel motor or wiring

Contact service

Worn carbon brushes in motor

Contact service

Brush motor will not operate

Brush motor fault has been detected. See SERVICE INDICATOR CODES

Faulty pad motor or wiring

Contact service

Circuit breaker tripped

Reset circuit breaker

Worn carbon brushes in motor

Contact service

Broken or loose belt (dual disk/cylindrical models)

Contact service

Vacuum motor will not operate

Squeegee assembly is raised off floor Lower squeegee assembly to floor Vacuum motor fault has been detected See SERVICE INDICATOR CODES

Faulty vacuum motor or wiring

Contact service

Circuit breaker tripped

Reset circuit breaker

Poor scrubbing performance

Debris caught in brush/pad Worn brush/pad

Remove debris Replace brushes/pad

Incorrect brush pressure

Adjust brush pressure

Wrong brush/pad type

Use correct brush/pad for application

Low battery charge

Recharge batteries

36

Nobles Speed Scrub 300 (03- 2015)

MAINTENANCE

TROUBLESHOOTING – Continued

PROBLEM

CAUSE

Trailing water – poor or Full recovery tank or excessive foam

not water pickup

buildup

Loose drain hose cap or flow control valve is open

Worn squeegee blades

Clogged drip trap (Squeegee assembly)

Clogged squeegee assembly

Loose vacuum hose connection

Clogged vacuum hose

Damaged vacuum hose

Clogged float shut-off screen in recovery tank

Recovery tank lid not completely closed

Defective seals on recovery tank lid

Little or no solution flow Empty solution tank

Low solution flow rate set

Clogged solution tank filter

Plugged solution supply line

Short run time

Low battery charge

Batteries need maintenance

Defective battery or end of battery life

Battery discharge indicator (BDI) programmed incorrectly

Faulty charger

Brush pressure set too high

SOLUTION Drain recovery tank
Replace cap or close flow control valve on drain hose Rotate or replace squeegee blades Remove cover and clean
Clean squeegee assembly Secure vacuum hose connection Flush vacuum hose Flush vacuum hose Replace vacuum hose Clean screen
Check lid for obstructions
Replaced seal Refill solution tank Increase solution flow rate Clean filter Flush solution supply line Charge batteries See BATTERIES Replace batteries See CHARGING BATTERIES
Replace battery charger Lower brush pressure. Lower dual down pressure lever

Nobles Speed Scrub 300 (03- 2015)

37

SPECIFICATIONS

GENERAL MACHINE DIMENSIONS/CAPACITIES/PERFORMANCE

MODEL

17 in / 43 cm Disk (Push)

20 in / 50 cm Disk (Push)

17 in / 43 cm Disk (Drive)

20 in / 50 cm Disk (Drive)

Length

51.25 in / 1302 mm

54 in / 1372 mm

51.25 in / 1302 mm

54 in / 1372 mm

Width

20 in / 508 mm

22 in / 559 mm

20 in / 508 mm

22 in / 559 mm

Height

43.1 in / 1095 mm

Weight

220 Ib / 98 kg

230 Ib / 104 kg

240 Ib / 109 kg

Weight (with batteries)

366 Ib / 166 kg

376 Ib / 171 kg

390 Ib / 177 kg

400 Ib / 181 kg

GVW

457 Ib / 207 kg

467 Ib / 212 kg

482 Ib / 219 kg

492 Ib / 223 kg

Squeegee width

30.4 in / 772 mm

Recovery tank capacity

14 gal / 53 L

Solution tank capacity

11 gal / 42 L

Scrubbing path width

16.9 in / 430 mm

19.9 in / 505 mm

16.9 in / 430 mm

19.9 in / 505 mm

Down pressure

47 lbs / 21.3 kg

52 lbs / 23.5 kg

47 lbs / 21.3 kg

51 lbs / 23 kg

Dual down pressure

88 lbs / 40 kg

92 lbs / 41.7 kg

86 lbs / 39 kg

90 lbs / 41 kg

Scrubbing speed

Pad assist

200 fpm / 61 mpm

Transport speed

n/a

240 fpm / 73 mpm

Reverse speed Productivity rate – estimated actual ec-H2O productivity rate – est. actual

n/a 9,340ft2/hr / 868m2/hr 9,668 ft2/hr / 898 m2/hr

n/a 11,208ft2/hr / 1041m2/hr 11,602ft2/hr / 1078m2/hr

144 fpm / 44 mpm 12,453ft2/hr / 1157m2/hr 12,891ft2/hr / 1198m2/hr

14,943ft2/hr / 1388m2/hr 15,469ft2/hr / 1437m2/hr

Aisle turnaround width

52 in / 1321 mm

54.5 in / 1384 mm

52 in / 1321 mm

54.5 in / 1384 mm

Ramp incline for scrubbing

9% maximum

Ramp incline for transporting

21% maximum

Ramp incline for loading- empty tanks

21% maximum

Solution flow rate

.5 gpm / 1.9 L/min maximum

ec-H2O solution flow rate

Low: .12 gpm / .45 L/min, Med: .25 gpm / .94 L/min, High: .35 gpm / 1.3 L/min

Brush motor

24 VDC, .68hp / .50kW

Propel motor

n/a

24 VDC, .23 hp / .175 kW

Vacuum motor

24 VDC, .5hp / .37kW

Water lift

34.5 in / 876 mm

ec-H2O solution pump

24 VDC, 1.0 gpm / 3.8 L/min, min open flow

Machine voltage

24 VDC

Battery capacity

2- 12V 105AH C/20 Wet, 2- 12V 130AH C/20 Wet, 2- 12V 150AH C/20 Wet, 2- 12V 140AH C/20 Sealed/AGM

Total power consumption

31.5A nominal

36.5A nominal

34.5A nominal

39.5A nominal

Battery Charger – on-board

100- 240VAC, 50/60Hz, 24VDC, 13A

Battery Charger – smart off-board

100- 240VAC, 50/60Hz, 24VDC, 13A

Protection grade

IPX3

Sound pressure level LpA Sound uncertainty KpA Sound power level uncertainty LpA uncertainty KpA Machine vibration at hand-arm Ambient operating temperature

67 dB(A) 0.8 dB(A)
84.3 dB(A)

67 dB(A) 0.8 dB(A)

84.3 dB(A)

<2.5 m/s2 Min: 32F/0C, Max: 110F/43C

67 dB(A) 0.8 dB(A)
84.3 dB(A)

*Values per EN 60335- 2- 72. Specifications are subject to change without notice.

38

Nobles Speed Scrub 300 (10- 2022)

SPECIFICATIONS

GENERAL MACHINE DIMENSIONS/CAPACITIES/PERFORMANCE

MODEL

24 in / 60 cm Dual Disk

20 in / 50 cm Cylindrical Brush

20 in / 50 cm Orbital

Length

51.75 in / 1314 mm

50.5 in / 1283 mm

49 in / 1245 mm

Width

26 in / 660 mm

25 in / 635 mm

20.5 in / 521 mm

Height

43.1 in / 1095 mm

Weight

250 Ib / 113 kg

255 Ib / 216 kg

Weight (with batteries)

410 Ib / 186 kg

415 Ib / 188 kg

GVW

502 Ib / 228 kg

507 Ib / 230 kg

Squeegee width

30.4 in / 772 mm

Recovery tank capacity

14 gal / 53 L

Solution tank capacity

11 gal / 42 L

Scrubbing path width

23.6 in / 600 mm

19.7 in / 500 mm

Down pressure

57 lbs / 26 kg

53 lbs / 24 kg

63 lbs / 28.5 kg

Dual down pressure

97 lbs / 44 kg

64 lbs / 29 kg

109 lbs / 49.5 kg

Scrubbing speed

200 fpm / 61 mpm

Transport speed

240 fpm / 73 mpm

Reverse speed Productivity rate – estimated actual ec-H2O productivity rate – est. actual

18,264ft2/hr / 1697m2/hr 18,906ft2/hr / 1756m2/hr

144 fpm / 44 mpm 14,943ft2/hr / 1388m2/hr 15,469ft2/hr / 1437m2/hr

14,943ft2/hr / 1388m2/hr 15,469ft2/hr / 1437m2/hr

Aisle turnaround width

53.5 in / 1346 mm

52 in / 1321 mm

49 in / 1245 mm

Ramp incline for scrubbing

9% max.

Ramp incline for transporting

21% max.

Ramp incline for loading- empty tanks

21% max.

Solution flow rate

.5 gpm / 1.9 L/min maximum

ec- H2O solution flow rate

Low: .12 gpm / .45 L/min, Med: .25 gpm / .94 L/min, High: .35 gpm / 1.3 L/min

Brush motor

24 VDC, .68hp / .50kW

Propel motor

24 VDC, .23 hp / .175kW

Vacuum motor

24 VDC, .5 hp / .37 kW

Water lift

34.5 in / 876 mm

ec- H2O solution pump

24 VDC, 1.0 gpm / 3.8 L/min, min open flow

Machine voltage

24 VDC

Battery capacity

2- 12V 105AH C/20 Wet, 2- 12V 130AH C/20 Wet, 2- 12V 150AH C/20 Wet, 2- 12V 140AH C/20 Sealed/AGM

Total power consumption

36A nominal

40A nominal

30A nominal

Battery Charger – on-board

100- 240VAC, 50/60Hz, 24VDC, 13A

Battery Charger – smart off-board

100- 240VAC, 50/60Hz, 24VDC, 13A

Protection grade

IPX3

Sound pressure level LpA Sound uncertainty KpA Sound power level uncertainty LpA uncertainty KpA Machine vibration at hand-arm Ambient operating temperature

67.7 dB(A) 0.8 dB(A)
83.8 dB(A)

68.7 dB(A) 0.8 dB(A)

67.5 dB(A) 0.8 dB(A)

84.2 dB(A)

83.5 dB(A)

<2.5 m/s2 Min: 32F/0C, Max: 110F/43C

*Values per EN 60335- 2- 72. Specifications are subject to change without notice.

Speed Scrub 300 (10- 2022)

39

SPECIFICATIONS MACHINE DIMENSIONS
SINGLE DISK MODEL
30.4 in 772 mm

51.25 in 1302 mm
17 in / 43 cm Model
54 in 1372 mm
20 in / 50 cm Model

43.1 in 1095 mm
20 in 508 mm 17 in / 43 cm
Model 22 in 559 mm 20 in / 50 cm Model