Alfa Network A500 Operator's Manual

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ENGLISH

WALK-BEHIND FLOOR SCRUBBER

OPERATOR MANUAL

Brazil

For the latest Parts manuals and other language Operator manuals, visit:

www.alfa.com/manuals

www.alfatennant.com.br

9015591

Rev. 00 (07- 2017)

*9015591*

INTRODUCTION

INTENDED USE

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.tennantco.com/manuals

PROTECT THE ENVIRONMENT

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

The A500 walk-behind 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 LABEL LOCATION

Always remember to recycle.

Alfa, uma empresa Tennant

Rua Barão de Campinas, 715 CEP: 01201- 902 - São Paulo - SP Tel.: (11) 3361- 6111

www.alfatennant.com.br

Specifications and parts are subject to change without notice.

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.

ALFA A500 (07-2017)

INTRODUCTION 2............................

INTENDED USE 2............................

MACHINE DATA 2............................

SERIAL NUMBER LABEL LOCATION 2......

UNCRATING MACHINE 2.....................

SAFETY

IMPORTANT SAFETY INSTRUCTIONS 5.......

SAFETY LABELS 7...........................

OPERATION

MACHINE COMPONENTS 8...................

MACHINE COMPONENTS 9...............

CONTROL PANEL COMPONENTS 9...........

MACHINE SYMBOLS 9.......................

INSTALLING BATTERIES 10...................

HOW THE MACHINE WORKS 10...............

BRUSH AND PAD INFORMATION 11............

MACHINE SETUP 11..........................

ATTACHING SQUEEGEE ASSEMBLY 11.....

INSTALLING DISK BRUSHES/PADS

(Disk Scrub Head Model) 12.................

FILLING SOLUTION TANK 13...............

ec-H2O WATER CONDITIONING CARTRIDGE

(ec-H2O MODEL) 13........................

CONTROL PANEL OPERATION 14.............

1-STEP BUTTON 14........................

BRUSH PRESSURE BUTTON 14............

SOLUTION FLOW BUTTON 14..............

ec-H2O INDICATOR (Option) 14.............

SERVICE INDICATOR 15...................

BATTERY DISCHARGE INDICATOR 15......

MACHINE OPERATION 15.....................

PRE-OPERATION CHECK LIST 15...........

OPERATING MACHINE 15..................

EMERGENCY SHUT-OFF BUTTON 16.......

WHILE OPERATING MACHINE 16...........

CIRCUIT BREAKER PANEL 17..............

HOUR METER 17..........................

DRAINING TANKS 17..........................

DRAINING RECOVERY TANK 17............

DRAINING SOLUTION TANK 18.............

SERVICE INDICATOR CODES 19...............

ec-H2O SYSTEM SERVICE INDICATO R CODES

- OPTION 20..............................

MAINTENANCE

MAINTENANCE CHART 21.....................

MACHINE MAINTENANCE 22..................

AFTER DAILY USE 22......................

AFTER WEEKLY USE 23...................

AFTER EVERY 50 HOURS OF USE 23.......

ELECTRIC MOTORS 24....................

BATTERIES 24................................

MAINTENANCE-FREE BATTERIES 24.......

FLOODED (WET) LEAD-ACID BATTERIES 24 CHECKING CONNECTIONS / CLEANING 25..

CHARGING BATTERIES 25.................

BATTERY CHARGER SETTINGS 26.........

SQUEEGEE BLADE REPLACEMENT 26.........

ec-H2O WATER CONDITIONING CARTRIDGE

REPLACEMENT 27............................

MACHINE JACKING 28........................

TRANSPORTING MACHINE 28.................

STORING MACHINE 29........................

FREEZE PROTECTION 29..................

TROUBLESHOOTING 30.......................

SPECIFICATIONS

GENERAL MACHINE DIMENSIONS/CAPACITIES/PERFORMANCE 32.

MACHINE DIMENSIONS 33....................

ALFA A500 (07-2017)

CONTENTS

ALFA A500 (07-2017)

SAFETY

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 or reactive metals.

- 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.

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.

- The machine may only be operated on gradients up to 2%.

- 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. 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.

- Block machine tires before jacking machine up.

- Jack machine up at designed locations only. Support machine with jack stands.

- Use hoist or jack that will support the weight of the machine.

- Avoid moving parts. Do not wear loose clothing or jewelry and secure long hair.

ALFA A500 (07-2017)

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 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. Electrical malfunction may occur. Use damp cloth.

- Use a hoist or adequate assistance when lifting batteries.

- Battery installation must be done by trained personnel.

- Only use distilled water when filling the automatic battery watering tank.

- Wear personal protection equipment as needed and where recommended in this manual.

6. When loading/unloading machine onto/off truck or trailer:

- Drain tanks before loading machine.

- Use a ramp that can support the machine

weight and operator.

- The machine may only be operated on

gradients up to 2%.

- 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.

For Safety: wear protective gloves.

For Safety: wear eye protection.

ALFA A500 (07-2017)

SAFETY

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 Flammable materials or reactive metals can cause an explosion or fire. Do not pick up.

Located near control console.

WARNING LABEL Flammable materials can cause explosion or fire. Do not use flammable materials in tank(s).

Located on backside of solution tank cover.

FOR SAFETY LABEL - Read manual before operating machine.

Located near control console.

WARNING LABEL Batteries emit hydrogen gas. Explosion or fire can result. Keep sparks and open flameawaywhen charging.

Located near control console and bottom side of recovery tank.

WARNING LABEL Spinning brush. Keep hands away.

Located on scrub head.

WARNING LABEL Do not charge batteries with damaged cord. Electric shock can result. Disconnect charger cord before servicing.

Located near control console.

WARNING LABEL - Electrical Hazard. Disconnect battery cables before servicing machine.

Located on circuit board panel.

ALFA A500 (07-2017)

OPERATION

MACHINE COMPONENTS

2026

ALFA A500 (07-2017)

MACHINE COMPONENTS

1. Control handle

2. Control handle start bail

3. Control panel

4. Forward/Reverse lever

5. Speed control knob

6. USB port (Service only)

7. Key switch

8. ec-H2O on/off switch (option)

9. Emergency shut-off button

10. Hour meter

11. Solution tank rear hose fill-port

12. Solution tank level/drain hose

13. Recovery tank drain hose

14. Circuit breaker panel

15. Off-board battery charger receptacle

16. Squeegee lower/lift foot pedal

CONTROL PANEL COMPONENTS

OPERATION

17. Squeegee assembly

18. Squeegee vacuum hose

19. Squeegee debris/drip tray

20. Recovery tank

21. ec-H2O module (option)

22. ec-H2O water conditioning cartridge

23. Battery compartment

24. Solution tank

25. Solution tank front bucket fill-port

26. Scrub head

27. Scrub head skirt

28. Pad release plunger

29. Wall rollers

30. Transport tie-down bracket

31. Recovery tank lid

32. Recovery tank float shut-off screen

6 7 8

MACHINE SYMBOLS

1. 1-Step button

2. Brush pressure button

3. Brush pressure indicator

4. Solution flow button

5. Solution flow indicator

6. Service Indicator

7. Battery discharge indicator (BDI)

8. ec-H2O indicator (option)

Read Manual

Fast speed

Slow speed

Forward / Reverse

ALFA A500 (07-2017)

Key On

Key Off

ec-H2O scrubbing (option)

Battery charge

No detergent (ec-H2O option)

Water temperature (ec-H2O option)

Circuit breaker

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.

3. Using the supplied battery post boots, connect the cables to battery posts, RED TO POSITIVE (+) & BLACK TO NEGATIVE (-) (Figure 3).

FOAM SPACER

BATTERY SPECIFICATIONS

Requires four 6 volt deep-cycle batteries, ≤ 260 Ah @ 20 hr.

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).

FIG. 1

2. Carefully install the batteries into the battery compartment tray and arrange the battery posts as shown (Figure 2). Position foam spacer between batteries as shown.

FOR SAFETY: When servicing machine, use a hoist or adequate assistance when lifting batteries.

RED

BLACK

FIG. 3

IMPORTANT: Before charging batteries, make sure the battery charger and the machine's battery discharge indicator are properly set for battery type. Failure to properly set will result in battery damage. See BATTERY CHARGER SETTINGS.

ATTENTION: Do not disconnect battery cables while charger is plugged in, circuit board damage may result.

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.

FIG. 2

ALFA A500 (07-2017)

OPERATION

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.

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 foot under pedal to lift (Figure 4).

FIG. 4

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

Scrubbing pad (Blue) - Used for medium to

heavy-duty scrubbing. Removes dirt, spills, and scuffs and leaves surface clean ready for re-coating.

Stripping pad (Brown) - Used for stripping of floor

finish to prepare the floor for recoating.

Heavy duty stripping pad (Black) - Used for

aggressive stripping of heavy finishes/sealers, or very heavy duty scrubbing.

Surface preparation pad (Maroon) - Used for very

aggressive chemical free removal of floor finish to prepare the floor for re-coating.

Turf scrubbing pad (Green) - Used to scrub uneven

floor surfaces with crevices, cracks and deep grout lines.

FIG. 5

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

ALFA A500 (07-2017)

FIG. 6

OPERATION

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

FIG. 7

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

Jam Nut

1/16 in 2mm

FOR SAFETY: Do not operate machine with pads or accessories not supplied or approved by Tennant. The use of other pads may impair safety.

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

FIG. 10

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

Caster hex plate

FIG. 8

INSTALLING DISK BRUSHES/PADS

1. Raise scrub head off floor and remove key.

FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key

and set parking brake if equipped.

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

FIG. 11

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

FIG. 12

FIG. 9

ALFA A500 (07-2017)

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.

The machine is equipped with two solution tank fill-port locations. A front bucket fill-port and a rear hose fill-port (Figure 13).

FIG. 13

1. Fill the solution tank with water until level reaches the ”3/3” mark on the solution tank drain hose indicator (Figure 14).

ec-H2O Scrubbing (Option)- Fill solution tank

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

Conventional Scrubbing - Fill solution tank with

water (not to exceed 60°C/140°F). Pour a recommended cleaning detergent into the solution tank according to mixing instructions on the container.

ATTENTION: For Conventional Scrubbing, only use

commercially approved cleaning detergents. Machine damage due to improper detergent usage will void the

manufacturer's warranty.

OPERATION

2. Replace the front and rear fill-port cover after filling solution tank (Figure 15).

FIG. 15

ec-H2O WATER CONDITIONING CARTRIDGE (ec-H2O MODEL)

The ec-H2O system is equipped with a water conditioning cartridge (Figure 16). The cartridge is designed to protect the machine's plumbing system

from potential scaling. The cartridge is required to be replaced when it

reaches its maximum water usage or expiration time on when the cartridge was activated, which ever comes

first. Depending on machine usage a new cartridge can last

anywhere from 12 to 24 months.

WARNING: Flammable materials can cause an

explosion or fire. Do not use flammable materials in tank(s).

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.

FIG. 14

FIG. 16

The control panel will signal the following code when it's time to replace the cartridge (Figure 17). The ec-H2O icon will begin to blink blue and red. See SERVICE INDICATOR CODES for further details.

FIG. 17

ALFA A500 (07-2017)

OPERATION

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

REPLACEMENT.

ATTENTION: During first time use and after replacing the water conditioning cartridge, the ec-H2O system will automatically override the selected solution flow

rateforupto75minutes.

CONTROL PANEL OPERATION

1-STEP BUTTON

With key turned on, press the 1-STEP button to activate the scrub function (Figure 18). The scrub head will lower to floor. Press button again to stop the scrub function and to raise scrub head.

SOLUTION FLOW BUTTON

Press the solution flow button to increase or decrease the solution flow rate (Figure 20). The solution flow indicator will display flow setting. No LED = No flow, One LED = Low flow, two LED's = Medium flow, three LED's = High flow.

FIG. 20

ec-H2O INDICATOR (Option)

The ec-H2O system automatically turns on at each key start. A blue ec-H2O indicator will appear on the control panel indicating that the system is activated. To turn off the ec-H2O system, press the ec-H2O switch located below the key switch. The blue ec-H2O indicator will disappear (Figure 21).

FIG. 18

BRUSH PRESSURE BUTTON

Press the brush pressure button to increase or decrease the brush pressure (Figure 19). The brush pressure indicator will display the pressure setting. One LED = Low pressure, two LED's = High pressure.

FIG. 19

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

FIG. 21

ec-H2O INDICATOR CONDITION

Solid blue Normal operation

Blinking blue/red Water conditioning cartridge

expired. Replace cartridge.

Solid or blinking red A system fault has occurred.

See Service Indicator Codes.

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

ALFA A500 (07-2017)

OPERATION

SERVICE INDICATOR

When the machine or on-board battery charger detects a fault, the service indicator will light up and begin flashing (Figure 22). The battery discharge indicator lights will also flash a fault code. See SERVICE INDICATOR CODES to diagnose machine fault.

FIG. 22

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

 ec-H2O Scrubbing: Confirm solution tank is filled

with clear cool water only.

 ec-H2O Scrubbing: Confirm all conventional

cleaning agents/restorers are drained and rinsed from solution tank.

 Check machine for proper operation.

OPERATING MACHINE

For control panel operating instructions, see CONTROL PANEL OPERATION.

1. Turn the key to the on ( I ) position (Figure 24).

FIG. 24

2. ec-H2O models - The ec-H2O system will automatically turn on at key start up. The ec-H2O indicator will appear on the control panel indicating that the system is activated (Figure 25).

ATTENTION: When conventional scrubbing with

cleaning detergents in solution tank, make sure to turn off the ec-H2O system by pressing the ec-H2O switch (Figure 25). If cleaning detergent is accidentally cycled through ec-H2O system, a system fault will occur. To clear fault, drain solution tank, add clear water and operate the ec-H2O system to clear fault. If fault repeats, continue to recycle key until fault clears. See SERVICE INDICATOR CODES for further detail.

FIG. 23

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 is empty, debris tray is clean

and the float shut-off screen is installed and clean.

 Check scrub head skirt for wear and damage.

ALFA A500 (07-2017)

FIG. 25

3. Lower the squeegee assembly to floor by stepping on foot pedal (Figure 26). To raise squeegee assembly, place foot under foot pedal and lift. The vacuum motor will automatically start when squeegee is lowered to floor.

OPERATION

FIG. 26

4. Press the 1-STEP button to activate the scrub function (Figure 27). The scrub head will lower to floor.

7. Adjust the scrubbing speed by turning the speed dial to the desired speed (Figure 30).

FIG. 30

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

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

FIG. 27

5. Push the directional lever forward to go forward (Figure 28). Pull the lever back to maneuver machine in reverse. Lift squeegee assembly when backing machine.

FIG. 28

6. To begin scrubbing, pull the start bail (Figure 29).

EMERGENCY SHUT-OFF BUTTON

Push the emergency shut-off button in the event of an emergency (Figure 31). This red button shuts off all power to machine. To regain power, turn the button clockwise and restart the key.

FIG. 31

WHILE OPERATING MACHINE

WARNING: Flammable 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.

5. When draining and refilling machine, always top off

the optional Severe Environment tank with detergent.

FIG. 29

ALFA A500 (07-2017)

FOR SAFETY: When operating machine, the machine may only be operated on gradients up to 2%.

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

ATTENTION: Foam buildup will not activate the

float shut-off screen, vacuum motor damage will result.

7. Use the double scrubbing method for heavily soiled areas. First scrub the area with the squeegee up, let solution set for 3-5 minutes, then scrub the area a second time with squeegee down.

8. When leaving the machine unattended, park on level surface, turn machine off, remove key and set

the parking brake, if equipped.

9. Do not operate machine in areas where the ambient temperature is above 110ºF/43ºC or below

freezing 36ºF/2ºC.

OPERATION

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 33).

FIG. 33

CIRCUIT BREAKER PANEL

The machine is equipped with resettable circuit breakers to protect the machine from a current overload (Figure 32). 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.

FIG. 32

Circuit

Breaker

CB1 4A

CB2 10 A

Rating Circuit protected

Key switch, circuit ec-H2O system, automatic

battery watering system

CB3 10 A

CB4 20 A

CB5 25 A

CB6 25 A

CB7 60 A

Scrub head lift actuator Vacuum motor Left brush motor Right brush motor Propel

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 after each use.

1. Transport the machine to drain area.

2. For models equipped with drain hose caps, hold the hose upward, remove cap then slowly lower hose to drain. For models equipped with flow control valve drain hose, lower hose and slowly open valve to drain (Figure 34).

FOR SAFETY: When servicing machine, all repairs must be performed by trained personnel.

ALFA A500 (07-2017)

FIG. 34

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

OPERATION

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

35).

FIG. 35

4. Rinse out the recovery tank with clean water and wipe clean of any soil residue (Figure 36).

3. Rinse solution tank with clean water (Figure 38).

FIG. 38

4. Remove the solution tank filter and clean screen after every 50 hours of use (Figure 39). Solution filter is located under machine at rear. Drain solution tank before removing filter.

FIG. 36

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 tank level hose from the accessory rail (Figure 37). Firmly reconnect the hose to the accessory rail after draining tank.

FIG. 39

FIG. 37

ALFA A500 (07-2017)

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.

Flashing service

indicator

LED Fault Code

☼= Flashing

☼☼☼☼☼

S ☼☼ S ☼

S ☼ SS☼

S ☼ S ☼☼

SS☼ SS

SS☼ S ☼

SS☼☼S

SS☼☼☼

☼ SSS☼

☼ SS☼☼

☼ S ☼ S ☼

S ☼☼☼ S

Flashing LED

fault code

CAUSE SOLUTION

Emergency shut-off button activated Release emergency shut-off button and restart

machine

Head lift actuator relay wiring problem Check connections. Contact service.

Solution valve wiring, connector or control board problem

Solution valve over current. Contact service

Brush motor relay wiring, connector or control board problem

Head lift actuator relay wiring, connector or control board problem

Propel circuit breaker tripped Reset circuit breaker. If fault repeats, contact

Propel motor wiring, connector or control board problem

Propel faults Restart machine. If fault repeats, contact ser-

Brush motor relay short fault Check pad for floor type. If fault repeats

Start bail is pulled or obstructed before turning machine on.

Scrub control board communication fault ec-H2O system communication fault

Check connections. Contact service

Contact service

service.

Contact service

vice.

contact service.

Release start bail or remove bail obstruction before turning machine on.

Restart. If fault repeats, contact service.

ALFA A500 (07-2017)

OPERATION

ec-H2O SYSTEM SERVICE INDICATOR CODES - OPTION

Solid or

blinking Red

ec-H2O

indicator

Contact service

Reset circuit breaker. If trip repeats, contact service.

Flashing

service

indicator

LED Fault Code

☼= Flashing

S ☼ S ☼ S

S ☼☼☼☼

☼ S ☼ SS

ecH2O indicator solid red

ecH2O indicator blinking red

ecH2O indicator blinking blue/red

Flashing

LED fault

code

CAUSE SOLUTION

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

ec-H2O pump over current Contact service

ec-H2O system breaker tripped ec-H2O pump breaker tripped

ec-H2O electrical fault Contact service

ec-H2O system water and plumbing fault Contact service

Water system conditioning cartridge expired 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. If fault repeats, continue to recycle key until fault clears.

ALFA A500 (07-2017)

MAINTENANCE CHART

MAINTENANCE

Interval

Daily

Person

Resp.

Key Description Procedure

O 1 Pads Check, flip or replace O 1 Brushes Check, clean O 2 Recovery tank Drain, rinse, clean float shut-off screen

and debris tray

O 3 Solution tank Drain, rinse O 4 Squeegee Clean, check for damage and wear O 5 Batteries Charge if necessary

O 6 Scrub head skirt Check for damage and wear

Weekly

O 5 Battery cells Check electrolyte level O 4 Squeegee assembly drip trap reservoir Check, clean

50 Hours

O 2 Recovery tank lid seal Check for wear.

O 7 Solution tank filter Remove and clean 200 Hours O 5 Batteries, terminals and cables Check and clean 750 Hours T 8 Vacuum motor Replace carbon brushes 1250 Hours T 9 Propel motor Replace carbon brushes

T 10 Brush motor Replace carbon brushes

O = Operator T = Trained Personnel

ALFA A500 (07-2017)

MAINTENANCE

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

4. Disk scrub head - Turn pad over or replace when worn (Figure 43).

AFTER DAILY USE

1. Drain and rinse out the recovery tank (Figure 40). See DRAINING TANKS.

FIG. 40

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

41).

FIG. 43

5. Replace brushes when they no longer clean effectively or when the bristles are worn to the yellow indicator (Figure 44).

FIG. 44

6. Wipe the squeegee blades clean. Inspect blades for wear and damage (Figure 45). Rotate blade if

worn. See SQUEEGEE BLADE REPLACEMENT.

FIG. 41

3. Drain and rinse out the solution tank (Figure 42).

FIG. 42

FIG. 45

ALFA A500 (07-2017)

7. Clean scrub head skirt. Check for wear or damage (Figure 46). Replace if worn or damaged.

FIG. 46

8. Clean the outside surface of the machine with an all purpose cleaner and damp cloth (Figure 47).

MAINTENANCE

AFTER WEEKLY USE

1. Check the electrolyte level in all batteries (Figure

49). See BATTERIES.

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

FOR SAFETY: When servicing machine, do not power spray or hose off machine. Electrical malfunction may occur. Use damp cloth.

FIG. 47

9. Charge batteries (Figure 48). See BATTERIES.

FIG. 49

2. Remove the drip trap cover from the squeegee assembly and clean reservoir (Figure 50).

FIG. 50

AFTER EVERY 50 HOURS OF USE

Drain solution tank. Remove the solution tank filter and clean screen (Figure 51). Turn the filter bowl counter-clockwise to remove.

FIG. 48

ATTENTION: Do not disconnect battery cables while charger is plugged in, circuit board damage may result.

ALFA A500 (07-2017)

FIG. 51

MAINTENANCE

ELECTRIC MOTORS

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

Carbon Brush Replacement Hours

Vacuum motor 750

Propel motor 1250

Disk brush motors 1250

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.

FLOODED (WET) LEAD-ACID BATTERIES

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

electrolyte level weekly.

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

The electrolyte level should be slightly above the battery plates as shown before charging (Figure 52). 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.

Before Charging After Charging

S Only charge the batteries in a well-ventilated area to

prevent gas build up. Charge batteries in areas with ambient temperatures 80ºF/27ºC 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 (Sealed AGM) 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.

FIG. 52

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 53). Do not remove

battery caps when cleaning batteries.

FIG. 53

ALFA A500 (07-2017)

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) lead-

acid batteries check the battery electrolyte level weekly before charging.

MAINTENANCE

4. 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 54). 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. 54

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.

ATTENTION: Do not disconnect battery cables while charger is plugged in, circuit board damage may result.

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

55).

ALFA A500 (07-2017)

FIG. 55

MAINTENANCE

OFF-BOARD BATTERY CHARGER SETTINGS

The off-board 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.

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.

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

3. Remove worn blade(s) from the blade retainer (Figure 57).

FIG. 57

4. Rotate the rear blade to a new wiping edge and reinstall blade (Figure 58). Make sure to align the slots in the blade with retainer tabs.

FIG. 58

5. Squeeze the squeegee frame and blade retainer together and re-tighten the two outside knobs (Figure 59).

FIG. 56

FIG. 59

ALFA A500 (07-2017)

ec-H2O 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 ec-H2O WATER CONDITIONING CARTRIDGE 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 rateforupto75minutes.

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 60). Drain recovery tank before lifting tank.

MAINTENANCE

4. Fill in the installation date on the new cartridge label (Figure 62).

FIG. 62

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 releasing service switch, the three solution flow indicator lights will begin to (ripple) move back

and forth (Figure 63).

c. Within 5 seconds

after releasing the service switch, while the three indicator lights are moving back and forth, quickly release the solution flow button located on

ec-H2O module (Figure 63). The three indicator lights will then blink

to indicate timer has been reset.

times Repeat process if the three indicator lights do not blink three times.

. After

press and

three

FIG. 60

3. Disconnect the two hose connectors from the top of the cartridge by pressing the gray collars inward and pulling the connectors outward (Figure 61). Lift cartridge to remove.

Gray

Collar

FIG. 61

Service switch

3 indicator lights

Solution flow button

FIG. 63

ALFA A500 (07-2017)

MAINTENANCE

MACHINE JACKING

FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine, remove key and set parking brake if equipped.

Use the designated locations to jack up the machine for service (Figure 64). Empty the recovery and solution tanks and position the machine on a level surface before jacking.

FOR SAFETY: When servicing machine, jack machine up at designated locations only. Support machine with jack stands. Use jack or hoist that will support the weight of the machine.

FIG. 64

TRANSPORTING MACHINE

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

1. Drain tanks, raise the scrub head and the remove squeegee assembly.

2. Carefully load machine in trailer or on truck.

FOR SAFETY: When loading/unloading, use a ramp that can support the machine weight and operator.

FOR SAFETY: When loading/unloading, the machine may only be operated on gradients up to 2%.

3. Once loaded, position the front of the machine up against the front of the trailer or truck. Lower the scrub head, turn key off and set parking brake, if equipped.

4. Place a block behind each wheel (Figure 65).

5. Using tie-down straps, secure the machine using the four tie-down brackets located on the machine frame (Figure 65). It may be necessary to install tie-down brackets to the floor of your trailer or truck.

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

ATTENTION: Do not use control console area or accessory storage rails for tie-down locations, damage may occur.

FIG. 65

ALFA A500 (07-2017)

STORING MACHINE

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

1. Charge the batteries before storing machine to prolong the life of the batteries. Recharge batteries

once a month.

2. Disconnect batteries before storing.

3. Drain and rinse recovery tank and solution tank.

4. Store the machine in a dry area with squeegee and scrub head in the up position.

ATTENTION: Do not expose machine to rain, store indoors.

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

6. If storing machine machine in freezing temperatures, proceed to FREEZE PROTECTION.

MAINTENANCE

5. After storing machine in freezing temperatures, drain any remaining antifreeze from the solution tank. Add clean water to solution tank and to optional detergent tank and operate the machine to flush system.

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

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

FREEZE PROTECTION

Storing machine in freezing temperatures.

1. Completely drain solution tank and recovery tank.

2. Empty the water from the solution tank filter located under machine. Replace filter (Figure 66).

FIG. 66

3. Pour 1 gallon / 4 liters of propylene glycol based recreational vehicle (RV) antifreeze into the

solution tank.

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

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

ALFA A500 (07-2017)

-Turn

Turn

MAINTENANCE

TROUBLESHOOTING

PROBLEM CAUSE SOLUTION

Service indicator icon is flashing

ec-H2O icon is red or flashing red

ec-H2O icon is flashing blue/red

Machine will not operate Emergency shut-off button activated Turn button to reset

On-board battery charger will not operate

Machine will not propel Propel fault has been detected See SERVICE INDICATOR CODES

Brush motor will not operate

Vacuum motor will not operate

Poor scrubbing performance

Machine or on-board battery charger fault has been detected

ec-H2O system fault has been detected

ec-H2O water conditioning cartridge expired

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 Plug not connected to power supply Check plug connection Batteries over discharged Replace batteries Battery charger fault detected See SERVICE INDICATOR CODES Faulty charger Replace charger Faulty power supply cord Replace power supply cord

Circuit breaker tripped Reset circuit breaker Faulty propel motor or wiring Contact service Worn carbon brushes in motor Contact service 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 (cylindrical brush

model)

Squeegee assembly is raised off floor Lower squeegee assembly to floor Vacuum motor fault has been

detected

Faulty vacuum motor or wiring Contact service Circuit breaker tripped Reset circuit breaker Debris caught in brush/pad Remove debris Worn brush/pad Replace brush/pad Incorrect brush pressure Adjust brush pressure Wrong brush/pad type Use correct brush/pad for application Low battery charge Recharge batteries Uneven brush pressure Scrub head/brushes not level. Contact service

See SERVICE INDICATOR CODES

Replace water conditioning cartridge.

Contact service

See SERVICE INDICATOR CODES

ALFA A500 (07-2017)

TROUBLESHOOTING - Continued

PROBLEM CAUSE SOLUTION

Trailing water - poor or no water pickup

Little or no solution flow Empty solution tank Refill solution tank

Automatic battery watering tank does not dispense water

Short run time Low battery charge Charge batteries

Full recovery tank or excessive foam buildup

Loose drain hose cap or flow control valve is open

Worn squeegee blades Rotate or replace squeegee blades Clogged drip trap (Squeegee

assembly)

Clogged squeegee assembly Clean squeegee assembly Loose vacuum hose connection Secure vacuum hose connection Clogged vacuum hose Flush vacuum hose Damaged vacuum hose Replace vacuum hose Clogged float shut-off screen in

recovery tank

Recovery tank lid not completely closed

Defective seals on recovery tank lid Replaced seal

Low solution flow rate set Increase solution flow rate Clogged solution tank filter Clean filter Plugged solution supply line Flush solution supply line Tank is empty Refill tank Faulty float switch Contact service Defective pump Contact service Pump not priming Contact service Faulty control board Contact service

Batteries need maintenance See BATTERIES Defective battery or end of battery life Replace batteries Battery discharge indicator (BDI)

programmed incorrectly

Faulty charger Replace battery charger Brush pressure set too high Lower brush pressure

Drain recovery tank

Replace cap or close flow control valve on drain hose

Remove cover and clean

Clean screen

Check lid for obstructions

See CHARGING BATTERIES

MAINTENANCE

ALFA A500 (07-2017)

SPECIFICATIONS

GENERAL MACHINE DIMENSIONS/CAPACITIES/PERFORMANCE

MODEL 32 in / 800 mm Dual Disk

Length 61.1 in / 1552 mm

Width 33.5 in / 850 mm

Height 43.3 in / 1100 mm

Weight 355 Ib / 161 kg

Weight (with batteries) 645 Ib / 293 kg

GVW 835 Ib / 379 kg

Squeegee width (Std) 41.3 in / 1049 mm

Squeegee width (Option) 46.6 in / 1234 mm

Solution tank capacity 22.5 gal / 85 L

Recovery tank capacity 27 gal / 102 L

Scrubbing path width 32 in / 800 mm

Down pressure Low: -75 lbs / 34 kg,

Scrubbing speed 2.5 mph / 4.0 km/h (220 fpm / 67 mpm)

Transport speed 2.7 mph / 4.4 km/h (240 fpm / 73 mpm)

Reverse speed 11.6 mph / 2.6 km/h (144 fpm / 44 mpm)

Productivity rate - estimated actual 25,714 ft2/hr / 2389 m2/hr

ec-H2O productivity rate - est. actual 27,323 ft2/hr / 2538 m2/hr

Aisle turnaround width 61.6 in / 1565 mm

Maximum operating gradient 2%

Solution flow rate Low: .30 gpm / 1.1 L/min, Med: .40 gpm / 1.5 L/min, High: .50 gpm / 1.9 L/min

ec-H2O solution flow rate Low: .22 gpm / 0.84 L/min,

Brush motor 2-24 VDC, 0.75 hp/0.55 kW, 29 A, 220 rpm

Propel motor 24 VDC, 0.63 hp / 0.48 kW, 20A

Vacuum motor 24 VDC, 0.46 hp / .34 kW, 14.3 A

Water lift 34 in / 864 mm

ec-H2O solution pump 24 VDC, 2 A, 1.0 gpm / 3.8 L/min, min open flow

Machine voltage 24 VDC

Battery capacity 4-6V 210AH C/20 Wet, 4-6V 225AH C/20 Wet

Total power consumption 66 A nominal / 1.6 kW

Battery Charger - smart off-board 85-265VAC, 50/60Hz, 24VDC, 25A

Protection grade IPX3

Sound pressure level LpA* 67.4 dB(A)

Sound uncertainty KpA* 0.8 dB(A)

Sound power level uncertainty LpAuncertainty K

Machine vibration at hand-arm* <2.5 m/s

Ambient operating temperature Min: 36F/2C, Max: 110F/43C

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

High: 120 lbs / 54.5 kg

Med: .33 gpm / 1.25 L/min,

High: .44 gpm / 1.67 L/min

83.1 dB(A)

ALFA A500 (07-2017)

MACHINE DIMENSIONS

DUAL DISK MODEL

33.5 in / 800 mm

SPECIFICATIONS

61.1 in / 1552 mm

43.3 in

1100 mm

41.3 in / 1049 mm

(Standard)

46.6 in / 1234 mm

(Option)

ALFA A500 (07-2017)

Alfa Network A500 Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

INTRODUCTION

INTENDED USE

CONTENTS

SAFETY

OPERATION

MAINTENANCE

TROUBLESHOOTING

SPECIFICATIONS