Thank you for purchasing a Kärcher North America product. Warranty registration is quick
and easy. Your registration will allow us to serve you better over the lifetime of the product.
To register your product go to :
http://warranty.karcherna.com/
For customer assistance:
1-800-444-7654
Overview
The Chariot Scrubber is a battery powered, stand-on, hard floor scrubber intended for commercial use. The
appliance applies a cleaning solution onto a hard floor, scrubs the floor with brush or pad, and then vacuums the
soiled water back into the recovery tank.
The HOW TO USE THIS MANUAL section will tell you
how to find important information for ordering correct
repair parts.
Parts may be ordered from authorized dealers. When
placing an order for parts, the machine model and
machine serial number are important. Refer to the
MACHINE DATA box which is filled out during the
installation of your machine. The MACHINE DATA box
is located on the inside of the front cover of this manual.
The SAFETY section contains important information
regarding hazardous or unsafe practices of the
machine. Levels of hazards are identified that could
result in product damage, personal injury, or severe
injury resulting in death.
The OPERATIONS section is to familiarize the operator
with the operation and function of the machine.
The MAINTENANCE section contains preventive maintenance to keep the machine and its components in
good working condition. They are listed in this general
order:
•Batteries
•Scrub Brush
•Squeegee
•Service Schedule
•Machine Troubleshooting
NOTE: The manual part number is located on the
lower right corner of the front cover.
The model and serial number of your machine is
located on the back of the machine.
4
86398220 Operators Manual - Chariot-2 iScrub 20
Safety
IMPORTANT SAFETY INSTRUCTIONS
When using this machine, basic precaution
must always be followed, including the following:
READ ALL INSTRUCTIONS BEFORE USING THIS MACHINE.
To reduce the risk of fire, electric shock, or injury:
Use only indoors. Do not use outdoors or expose to rain.
Use only as described in this manual. Use only manufacturer's recommended components and attachments.
If the machine is not working properly, has been dropped, damaged, left outdoors, or dropped into water, return it to
an authorized service center.
Do not operate the machine with any openings blocked. Keep openings free of debris that may reduce airflow.
This machine is not suitable for picking up hazardous dust.
Machine can cause a fire when operating near flammable vapors or materials. Do not operate this machine near
flammable fluids, dust or vapors.
This machine is suitable for commercial use, for example in hotels, schools, hospitals, factories, shops and offices
for more than normal housekeeping purposes.
Maintenance and repairs must be done by qualified personnel.
If foam or liquid comes out of machine, switch off immediately.
Disconnect battery before cleaning or servicing.
Before the machine is discarded, the batteries must be removed and properly disposed of.
Make sure all warning and caution labels are legible and properly attached to the machine.
During operation, attention shall be paid to other persons, especially children.
Before use all covers and doors shall be put in the positions specified in the instructions.
When leaving unattended, secure against unintentional movement.
The machine shall only be operated by instructed and authorized persons.
When leaving unattended, switch off or lock the main power switch to prevent unauthorized use.
Only chemicals recommended by the manufacturer shall be used.
This appliance has been designed for use with the brushes specified by the manufacturer. The fitting of other
brushes may affect its safety.
Do not use on surfaces having a gradient of over 10% (6 degrees).
READ AND SAVE THESE INSTRUCTIONS
86398220 Operators Manual - Chariot-2 iScrub 20
5
Safety
MESURES DE SÉCURITÉ IMPORTANTES
Lors de l'utilisation d'un appareil à batteries, il est nécessaire de respecter
systématiquement des mesures de sécurité de base, comme suit :
PRENEZ NOTE DE TOUTES CES MESURES AVANT D'UTILISER CETTE MACHINE.
Pour réduire les risques d'incendie, de chocs électriques, ou de blessures :
N'utiliser cette machine qu'en intérieur. Ne jamais l'utiliser à l'extérieur ou dans la pluie.
N'utiliser cette machine que comme décrit dans le présent manuel. N'utiliser que les composants et les accessoires
conseillés par le fabricant.
Lorsque la machine ne fonctionnant pas correctement, a fait l'objet d'une chute ou d'une détérioration, a été laissée
à l'extérieur, est tombée dans l'eau, la retourner au centre de service agréé.
Ne pas opérer la machine lorsque les conduits de ventilation sont bloquées. Débarrasser les débris des conduits,
car ils peuvent réduire l'écoulement d'air.
Cette machine n'est pas adaptée au ramassage de poussières dangereuses
Cette machine peut provoquer un incendie lorsqu'elle est utilisée près de vapeurs ou de matériaux inflammables.
Ne pas l'utiliser près de liquides, de poussières ou de vapeurs inflammables.
Cette machine est destinée à un usage commercial. Elle est recommandée davantage pour les domaines hôtelier,
scolaire, hospitalier, industriel ou pour les bureaux, les chaînes de magasin, que pour un usage domestique
normal.
L'entretien et les réparations de la machine doivent être effectuées par un personnel qualifié.
Si de la mousse ou du liquide sort de la machine, la mettre hors tension immédiatement.
Déconnecter les batteries avant de nettoyer la machine ou de la soumettre à un entretien.
Avant de se débarrasser de la machine, il est nécessaire de retirer les batteries et de les jeter correctement.
S'assurer que toutes les plaques d'avertissement ou de précaution sont lisibles et fixées correctement sur la
machine.
Durant la manoeuvre de la machine, prendre garde aux personnes environnantes et notamment aux enfants.
Avant l'utilisation de la machine, veiller à positionner tous les couvercles et portes comme indiqué dans les instructions.
Lorsque la machine est laissée sans surveillance, s'assurer qu'elle ne se déplace pas de manière accidentelle.
Cette machine ne doit être manoeuvrée que par un personnel expérimenté et qualifié.
Lorsque la machine est laissée sans surveillance, la mettre hors tension ou verrouiller l'interrupteur principal afin
d'empêcher un emploi non autorisé.
Seuls les produits chimiques recommandés par le fabricant doivent être utilisés.
Cette machine a été conçue pour être utilisée avec des brosses spécifiées par le fabricant.
L'utilisation d'autres brosses peut affecter sa sûreté.
N'employez pas sur des surfaces ayant un gradient de plus de 10% (6 degrés).
CONSERVER CES INSTRUCTIONS
6
86398220 Operators Manual - Chariot-2 iScrub 20
Safety
The following symbols are used throughout this guide as indicated in their descriptions:
HAZARD INTENSITY LEVEL
There are three levels of hazard intensity identified by signal words -WARNING and CAUTION and FOR SAFETY.
The level of hazard intensity is determined by the following definitions:
WARNING - Hazards or unsafe practices which COULD result in severe personal injury or death.
CAUTION - Hazards or unsafe practices which could result in minor personal injury or product or property damage.
FOR SAFETY: To Identify actions which must be followed for safe operation of equipment.
Report machine damage or faulty operation immediately. Do not use the machine if it is not in proper operating
condition. Following is information that signals some potentially dangerous conditions to the operator or the equipment. Read this information carefully. Know when these conditions can exist. Locate all safety devices on the
machine. Please take the necessary steps to train the machine operating personnel.
FOR SAFETY:
DO NOT OPERATE MACHINE:
Unless Trained and Authorized.
Unless Operation Guide is Read and understood.
In Flammable or Explosive areas.
In areas with possible falling objects.
WHEN SERVICING MACHINE:
Avoid moving parts. Do not wear loose clothing; jackets, shirts, or sleeves when working on the machine. Use
approved replacement parts.
Batteries emit hydrogen gas. Explosion or fire can result. Keep sparks and open flame away. Keep battery
compartment open during charging. Keep sparks and flames away from the batteries. Do not smoke
around batteries.
Disconnect batteries before worki ng on m achine. Onl y qualif ied pers onn el shou ld work inside mach in e.
Always wear eye protection and protective clothing when working on or near batteries. Avoid skin contact
with the acid contained in the batteries.
Never allow metal to lie across battery tops.
86398220 Operators Manual - Chariot-2 iScrub 20
7
Safety
Les symboles ci-dessous sont utilisés à travers ce manuel comme illustré dans leurs descriptions :
DEGRÉS DE RISQUES EN CAS DE DANGER
Il existe trois degrés de risques identifiés par les termes signalétiques -AVERTISSEMENT et ATTENTION et POUR
VOTRE SÉCURITÉ. Le degré de risque est défini de la manière suivante:
AVERTISSEM EN T - Dangers ou méthodes dangereuses qui POURRAIENT provoquer de graves blessures ou
entraîner la mort.
A T TENTION - Dangers ou méthodes dangereuses qui pourraient provoquer des blessures légères ou une détérioration du produit ou des biens immobiliers.
POUR VOTRE SÉCURITÉ: ce signe permet d'identifier les mesures de précaution à prendre pour assurer un bon
fonctionnement du matériel.
Rendre compte immédiatement d'une défaillance ou d'une détérioration de la machine. Ne pas utiliser la machine
si celle-ci ne fonctionne pas correctement. Lire soigneusement les informations ci-dessous signalant certains
dangers potentiels pour l'opérateur de la machine. L'opérateur doit être absolument au courant de ces dangers
potentiels. Localiser tous les dispositifs de sécurité sur la machine. Il est conseillé de prendre les mesures nécessaires pour former le personnel opérateur.
POUR VOTRE SÉCURITÉ:
NE PAS MANOEUVRER LA MACHINE:
Lorsqu'on n'est pas expérimenté ou qualifié.
Lorsque le guide d'utilisation n'est pas été lu ou compris.
Dans des zones inflammables ou explosives.
Dans des zones où des objets peuvent tomber.
LORS DE L'ENTRETIEN DE LA MACHINE:
Éviter les parties amovibles. Ne pas porter de vêtements amples, tels que des vestes, des chemises ou des
vêtements avec manches lors de l'utilisation de la machine. Utiliser les pièces détachées homologuées.
Les batteries émettent le gaz d'hydrogène. L'explosion ou le feu peut résulter. Étincelles de subsistance et
flamme nue loin. Compartiment de batterie de subsistance ouvert en charg ean t. Étincelles et flammes de
subsistance loin des batteries. Ne fumez pas autour des batteries.
Déconnecter les batteries avant de travailler sur la machine . La machine ne do it être confiée qu'à un
personnel qualifié. Porter systématiquement des lunettes et des vêtements de protection lors d'une intervention sur les batteries ou aux alentours. Éviter tout contact de la peau avec l'acide contenu dans les
batteries.
Ne jamais placer d'objets métalliques sur le dessus des batteries.
8
86398220 Operators Manual - Chariot-2 iScrub 20
Safety
CAUTION
BATTERY
86252520
WARNING LABEL
86244300
CAUTION
CAUTION LABEL
86244310
CAUTION LABEL
86335010 (2X)
LABEL
WARNING
86385070
SAFETY LABEL LOCATIONS
These drawings indicate the locat ion of safet y labe ls on the machine. If at any time the labels become ille gible ,
promptly replace them.
EMPLACEMENT DE L'ÉTIQUETTE DE SÉCURITÉ
REMARQUE : Ces dessins indiquent l'emplacement des étiquettes de sécurité sur la machine. Si, à tout moment,
les étiquettes deviennent illisibles, contactez votre représentant autorisé pour un remplacement rapide.
86398220 Operators Manual - Chariot-2 iScrub 20
9
Operations
Technical Specif ications
ITEMDIMENSION/CAPACITY
Nominal Power-Disk1080 W
Nominal Power-Orbital936 W
Nominal Power-Cylindrical1512 W
Rated Voltage36 Volts DC
Rated Amperage -Disk30 amps
Rated Amperage -Orbital26 amps
Rated Amperage -Cylindrical42 amps
Batteries3 X12 Volt 130 AH @ 20 hr. rate
Battery Compartment Dimensions20-1/2 in. x 13 in. x 10 in. tall (330mm x 521mm x 254mm)
Scrub Brush Motor - Disk Machine1 x .28 HP (209 W)
Scrub Brush Motor - Orbital Machine1 x .5 HP (373 W)
Scrub Brush Motor - Cylindrical Machine1 x .8 HP (600 W)
Vacuum Motor.63 HP (470 W)
Maximum flow rate of vacuum motor72 cfm (33.98 liters per second)
Maximum suction of vacuum motor47.3 inches of water (11.7 kPa)
Propelling Motor.38 HP (280 W)
Mass (GVW)827 lbs (375 kg)
Weight empty without batteries - Disk209 lbs (96 kg)
Weight empty without batteries - Orbital271 lbs (123 kg)
Weight empty without batteries - Cylindrical 255 lbs (116 kg)
Solution ControlGravity, 1/3 GPM average
Solution capacity10 gal (38 L)
Recovery capacity10 gal (38 L)
Scrub brush diameter - Disk20 inch (508 mm)
Scrub brush length - Cylindrical 22 inch (559 mm)
Scrub brush pressure - Disk / Orbital50 lbs (222N)
Scrub brush pressure - Cylindrical 46 lbs (21 kg)
Scrub brush speed - Disk180 rpm
Scrub brush speed - Cylindrical1500 rpm
Tires8 in. (203mm) drive, 6 in. (156mm) rear, polyurethane
Maximum Speed2.4 mph (3.7 kph)
BrakeElectrical parking brake,sets automatically whenever operator stops.
Minimum aisle u-turn width51in. (1295 mm)
Maximum rated climb and descent angle10% (6 degrees)
Vibration, hands - Disk1.6 m/s²
Vibration, feet - Disk0.54 m/s²
Uncertainty - Disk 0.5 m/s²
Sound pressure level - Disk68.0 dBA
Sound power level - Disk81.1 dBA
Uncertainty - Disk 3.0 dBA
Vibration, hands - Cylindrical1.5 m/s²
Vibration, feet - Cylindrical0.9 m/s²
Uncertainty - Cylindrical0.5 m/s²
Sound pressure level - Cylindrical71.5 dBA
Sound pressure level - Cylindrical84.7 dBA
Uncertainty - Cylindrical3.0 dBA
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86398220 Operators Manual - Chariot-2 iScrub 20
ITEMMEASURE
WIDTHLENGTH
HEIGHT
Height 51.8 in (1316mm)
Length 44.0 in (1118mm)
Width without squeegee - Disk / Orbital23.4 in (594mm)
Width without squeegee - Cylindrical25.4 in (645mm)
Width of squeegee - Disk / Orbital27.2 in (691mm)
Width of squeegee - Cylindrical29.3 in (744mm)
Width of scrub path - Disk / Orbital20 in (508mm)
Width of scrub path - Cylindrical22 in (559mm)
Operations
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure
that they do not play with the appliance.
Cet appareil n'est pas prévu à l'usage des personnes (enfants y compris) avec des possibilités physiques, sensorielles ou mentales réduites, ou le manque d'expérience et de connaissance, à moins qu'ils aient été donnés la
surveillance ou l'instruction au sujet de l'utilisation de l'appareil par une personne chargée de leur sûreté. Des
enfants devraient être dirigés pour s'assurer qu'ils ne jouent pas avec l'appareil.
86398220 Operators Manual - Chariot-2 iScrub 20
11
Operations
How This Machine Works
The Chariot® is a battery powered, self-propelled, hard
floor scrubber intended for commercial use. The
appliance applies a cleaning solution onto a hard floor,
scrubs the floor with a brush, and then vacuums the
soiled water back into the recovery tank.
The machine's primary systems are the solution
system, scrub system, recovery system, and operator
control system.
The function of the solution system is to store cleaning
solution and deliver it to the scrub system. The solution
system consists of the solution tank, strainer, metering
valve and solenoid valve. The solution tank stores
cleaning solution (water and detergent) until it is
delivered to the scrub system. The strainer protects the
valves from debris. The solenoid valve automatically
prevents solution flow unless the scrub brush is turned
on and the machine is being propelled.
The function of the scrub system is to scrub the floor.
The disk scrub system consists of one rotary type disk
scrub brush, motor, scrub deck skirt and lift actuator.
The brush scrubs the floor as the motor drives the
brush. The brush drive hub allows the scrub brush to
follow irregularities and changes in the floor without
loosing contact with the floor. The scrub deck skirt
controls the cleaning solution on the floor so that the
squeegee can pick it up.
The function of the recovery system is to vacuum the
soiled water back into the recovery tank. The recovery
system consists of the squeegee, vacuum motor, float
ball, recovery tank. The squeegee wipes the dirty
solution off the floor as the machine moves forward.
The vacuum motor provides suction to draw the dirty
solution off the floor and into the recovery tank. The
float ball filter protects the vacuum fan from debris and
foam. The recovery tank stores the dirty solution.
The function of the operator control system is to control
the direction and speed of the machine. The directional
control system consists of the direction control drive
reset switch, throttle pedal, emergency stop/brake
switch, steering wheel, propel controller, and drive
wheel. The directional control drive reset switch signals
forward or reverse direction and makes sure the
operator is on the platform before machine will propel.
The controller interprets signals from the throttle pedal
to command the drive wheel to propel or slow the
machine. The steering wheel points the drive wheel in
the direction desired by the operator. The parking brake
automatically engages when the operator stop the
machine. The emergency stop/brake can be used to
hold the machine on slopes.
The cylindrical scrub system consists of two cylindrical
brushes, motor, side squeegees, and lift actuator. The
two counter rotating brushes scrub the floor, driven by a
single motor. The brush deck “floats” with constant
brush pressure. The side squeegees keep the cleaning
solution within the brush deck width, allowing the main
squeegee to pick the solution up.
12
86398220 Operators Manual - Chariot-2 iScrub 20
Operations
Cylindrical
Deluxe Disk & Cylindrical
12
10
9
10
12
1
2
3
4
5
6
7
8
9
11
7. Recovery Sight Dome
8. Recovery Drain Hose
9. Scrub Deck Skirt
10. Solution Cov er
11. Solution Dra in Hose / S oluti on Leve l I ndic ator
12. Squeegee
Components
1. Drive Control
2. Scrub Controls
3. Control Console
4. Pedal Pla tf orm
5. Solution Tank
6. Recovery Tank
86398220 Operators Manual - Chariot-2 iScrub 20
13
Operations
1
2
3
4
5
6
7
89
10
Drive Controls
14
86398220 Operators Manual - Chariot-2 iScrub 20
Operations
2. EMERGENCY STOP/BRAKE SWITCH
1. Key Switch
2. Emergency Stop/Brake Switch
3. Directional Control / Drive Reset Switch
4. Throttle Pedal
5. Horn Button
6. Steering Wheel
7. Speed Control
8. Battery Discharge Indicator
9. Hour Meter
10. Operator Presence Switch
1. KEY SWITCH
Controls the power for machine functions.
To turn the machine power on, rotate key clockwise.
To turn the machine off, rotate key counterclockwise.
When the key is turned on the battery symbol will
flash once and stay on continuously.
This safety feature is designed to cut all power to
the machine at any time and apply parking brake.
To shut the machine power off, push the
Emergency Stop Switch, this will also engage the
parking brake and cause the machine to stop
immediately.
To reset the machine, rotate the switch clockwise.
3. DIRECTIONAL CONTROL / DRIVE RESET
SWITCH
This safety feature is designed to ensure safe
engagement of propel drive. Each time the
machine power is turned on, or each time an
operator steps on to the platform, the Drive Reset
Switch must be pushed before machine will propel.
The switch controls the direction of travel of the
vehicle. The lighted arrow on the switch indicates
direction of travel.
To travel forward, press the top of the switch.
To travel in reverse, press the bottom of the switch.
86398220 Operators Manual - Chariot-2 iScrub 20
15
Operations
4. THROTTLE PEDAL
Controls the speed of the vehicle within the speed control setting selected. Pressing the pedal causes the
machine to travel in the direction selected by the Directional Control Switch.
To increase speed, increase pressure on the pedal.
To decrease speed, decrease pressure on the pedal.
5. HORN BUTTON
The horn is activated by pressing the horn button.
6. STEERI N G WHEEL
The steering wheel turns the front wheel causing the machine to change direction.
7. SPEED CONTROL
Controls the maximum speed of the machine. There are two settings, slow and fast.
To change speed, rotate the dial to either slow or fast position. The slow position is to the left (counterclockwise), fast to the right (top position).
The throttle pedal will always regulate the speed between 0 and maximum.
16
86398220 Operators Manual - Chariot-2 iScrub 20
Operations
8. BATTERY DISCHARGE INDICATOR
Indicates the charge level of the batteries.
The indicator will be illuminated if the batteries have a sufficient charge. A slow, continuous flash indicates the
batteries require charging.
The Battery Lockout function will activate when the batteries are low.
Once active, the LED status indicator will begin to flash slowly and the controller will inhibit the scrub motor and
water solenoid. The vacuum and drive remain functional. The “vacuum only” selection (position ‘B’) can be
used to vacuum up any remaining water. Return the unit to the charging station and charge the batteries.
NOTE: Continuing usage may damage the batteries.
When the machine is left overnight with less than a full charge, the display may initially indicate a full charge. It
will also indicate a full charge if the batteries are disconnected, then reconnected. After a few minutes of
operation the indicator will give the correct charge level.
9. HOUR METER
Records the number of hours the machine has been in scrubbing operation. This information is useful in determining when to service the machine.
86398220 Operators Manual - Chariot-2 iScrub 20
17
Operations
1
LABEL WITH CHEMICAL METERING OPTION.
Scrub Controls
1. FUNCTION MODE SWITCH
The first two positions are for transport only. See drive controls section.
Light cleaning
This mode is used for light cleaning. In this mode the machine will propel at fast speed. The
‘floating’ scrub deck and squeegee is in the down position. The water will flow. Water will automatically shut off in neutral and restarts when scrubbing is resumed. The vacuum will draw the
water into the recovery tank.
Deep cleaning
This mode is used for deep cleaning. In this mode the machine will propel at a low speed. The
‘floating’ scrub deck and squeegee is in the down position. The water will flow. Water will automatically shut off in neutral and restarts when scrubbing is resumed. The vacuum will draw the
water into the recovery tank.
18
86398220 Operators Manual - Chariot-2 iScrub 20
Operations
Vacuum only mode
This mode is used for picking up solution only. The brush and water will both be up and off. In
this mode the machine will propel at fast speed. The squeegee is lowered and the vacuum
will come on.
Double Scrub cleaning (with chemical metering on equipped models)
This mode is used for putting down solution and scrubbing without picking it back up. The
squeegee is set manually by connecting the two double scrub support cables. In this mode
the machine will propel at a slow speed. The scrub deck will lower. The solution will flow. The
brush and water will shut off when the machine is in neutral. They will resume when propelling
is resumed.
Light cleaning with chemical metering
Chemical dilution rate to be set by chemical metering selection switch.
Deep cleaning with chemical metering
Chemical dilution rate to be set by chemical metering selection switch.
86398220 Operators Manual - Chariot-2 iScrub 20
19
Operations
1
2
3
5
4
DISK / ORBITAL
Scrub Controls-Squeegee
1. Squeegee Latch
2. Squeegee Hose and Tube
3. Squeegee Wheels (3)
4. Do uble Sc rub Supp ort Cabl e
5. Double Scrub Cable Hook
20
86398220 Operators Manual - Chariot-2 iScrub 20
Operations
4
CYLINDRICAL
1
3
2
5
1. Squeegee Latch
The squeegee latch holds the squeegee in place.
2. Squeegee Hose and Tube
The squeegee hose and tube carry the recovered solution to the recovery tank.
3. Squeegee Wheels
The squeegee wheels support the squeegee at the correct height and angle to automatically obtain optimum
suction.
4. Do uble Sc rub Supp ort Cabl e
The double scrub support cables retain the deck in the double scrub position.
5. Double Scrub Ca ble Hook
The double scrub cable hook is the connection point for the double scrub support cable.
Since the squeegee is raised and lowered by the scrub deck, the double scrub position is set manually.
86398220 Operators Manual - Chariot-2 iScrub 20
21
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