Otto Bock B500 classc, B500 advanced Instruction Manual

Instructions for Use
(User)

B500 classic/advanced

Additional options for the B500 advanced

The model B500 advanced power wheelchair can be equipped with the following additional options (applicable
options are checked):

Electronic drive-away lock*
[ ] Function enabled [ ] Function disabled

If enabled, the function is activated by pressing the mode key on the control panel.

The function is deactivated with the joystick.

2-way adapter cable*
[ ] Adapter cable included [ ] Adapter cable not included

The included adapter cable allows the following functions to be selected directly through separate buttons:

[ ] Footrest, left [ ] Footrest, right [ ]Seat tilt
[ ] Seat height adjustment [ ] Back angle adjustment [ ] Light
[ ] Direction indicator, right [ ] Direction indicator, left [ ] Horn
[ ] Warning flasher [ ] other:

*See the "Usage" chapter for more information

Table of contents

Table of contents

Foreword 1 6............................................................

Product description2 7............................................

Function 2.1 7..............................................................

Product Overview2.2 7................................................

Safety3 8..................................................................

Explanation of warning symbols3.1 8...........................

General Safety Instructions3.2 8..................................

Reference to additional safety instructions3.3 10.........

Rating Plate and Warning Labels3.4 11......................

Delivery4 13.............................................................

Scope of supply4.1 13.................................................

Options4.2 13..............................................................

Model B500 classic4.2.1 13...........................................

Model B500 advanced4.2.2 13.......................................

Storage4.3 14..............................................................

During daily use4.3.1 14.................................................

In case of extended disuse4.3.2 14.................................

Preparation for use5 15...........................................

Safety Instructions5.1 15.............................................

Initial operation5.2 16..................................................

Locking the back angle adjustment in place5.2.1 16.......

Adjustments5.3 17.......................................................

Prerequisites5.3.1 17......................................................

Adjusting the back angle5.3.2 17....................................

Adjusting the side panels5.3.3 18...................................

Adjusting the footrests5.3.4 19........................................

Adjusting the belt lengths5.3.5 20...................................

Adjusting the control panel5.3.6 20.................................

Changing control unit parameters5.3.7 21......................

Operation6 22..........................................................

Side panels6.1 22........................................................

Footrests6.2 23...........................................................

Getting in / transfer6.3 24............................................

Control unit6.4 25........................................................

Control Panel6.4.1 26.....................................................

Buttons and display functions6.4.2 27.............................

Driving Functions6.5 30...............................................

Safety Instructions6.5.1 30.............................................

Driving notes6.5.2 33......................................................

Switching on and off6.5.3 34..........................................

Selecting the speed levels6.5.4 35..................................

Driving6.5.5 35...............................................................

Page 303/2011B500 classic/advanced

Table of contents

Drive-away lock6.5.6 36.................................................

Adjusting the driving characteristics6.5.7 38...................

Activating/deactivating the brakes6.6 38......................

Batteries/charging process6.7 40................................

Safety Instructions6.7.1 40.............................................

General6.7.2 41..............................................................

Battery charging information6.7.3 41..............................

Battery charger6.7.4 42..................................................

Charging the battery6.7.5 43..........................................

Power seat functions6.8 44..........................................

Safety Instructions6.8.1 44.............................................

Power seat height adjustment6.8.2 45............................

Power seat tilt6.8.3 47....................................................

Power back angle adjustment6.8.4 47............................

Power footrests6.8.5 48..................................................

Controlling power seat functions6.8.6 48........................

Joystick and display functions6.8.7 50............................

Manual seat functions6.9 51........................................

Safety Instructions6.9.1 51.............................................

Manual seat tilt6.9.2 51..................................................

Manual back angle adjustment6.9.3 52..........................

Manual elevating footrests6.9.4 52.................................

Additional seat options6.10 53.......................................

Contour seat6.10.1 53......................................................

Recaro® seat6.10.2 53.....................................................

Headrest6.10.3 56............................................................

Control unit accessories6.11 56.....................................

Attendant control6.11.1 56................................................

Push-button module6.11.2 59...........................................

Adapter cable for Piko or Buddy button6.11.3 62.............

External odometer6.11.4 62..............................................

Additional options6.12 63..............................................

Control panel holder6.12.1 63..........................................

Lights6.12.2 64.................................................................

Belts / belt systems6.12.3 64............................................

Suspension (steering casters/drive wheels)6.12.4 67........

Locking the steering casters6.12.5 68..............................

Rear bumper6.12.6 69......................................................

Overview of additional options6.12.7 69...........................

Disassembly/transport6.13 70.......................................

Safety Instructions6.13.1 70.............................................

Reducing the transportation size6.13.2 71........................

6.13.3 72.......

Reducing the transportation size – Recaro®
seat

Preparing for transport6.13.4 72.......................................

Use in a wheelchair accessible vehicle6.14 73...............

Safety Instructions6.14.1 73.............................................

Permitted use6.14.2 74.....................................................

03/2011Page 4 B500 classic/advanced

Table of contents

Necessary accessories6.14.3 74......................................

Care6.15 74..................................................................

Safety Instructions6.15.1 74.............................................

Cleaning6.15.2 75............................................................

Disinfection6.15.3 75........................................................

Maintenance / repair7 75........................................

Safety Instructions7.1 75.............................................

Maintenance7.2 76......................................................

Maintenance intervals7.2.1 77........................................

Repair7.3 80................................................................

Replacing a defective fuse7.3.1 80.................................

Replacing a defective bulb7.3.2 82.................................

Replacing the battery7.3.3 84.........................................

Troubleshooting7.4 84.................................................

Types of notifications7.4.1 85.........................................

Wheelchair control unit fault overview7.4.2 86................

Attendant control fault overview7.4.3 89.........................

Disposal8 91............................................................

Safety Instructions8.1 91.............................................

Disposal Information8.2 91..........................................

Legal information9 91..............................................

Service life9.1 91.........................................................

Liability9.2 91..............................................................

CE Conformity9.3 92...................................................

Warranty terms9.4 92..................................................

Appendices10 93.......................................................

Technical data10.1 93...................................................

Page 503/2011B500 classic/advanced

Page 503/2011B500 classic/advanced

Foreword

1 Foreword

INFORMATION

These instructions for use (user) can be viewed and
downloaded from our website www.ottobock.com. It is
possible to increase the display size of the PDF document
stored there.

For further questions about the instructions for use (user),
please contact the authorised personnel who issued the
product to you.

With this wheelchair, you have purchased a high quality
product which can be put to versatile, daily use at home,
and outdoors.

Be sure to read these instructions for use before you start
using the wheelchair. Pay special attention to the "Safety"
and "Usage" chapters.

Please note the following:

■

If questions or problems arise which cannot be
resolved despite reading the instructions for use,
please contact the authorised personnel which fitted
your wheelchair, or Otto Bock service (address inside
back cover or on back cover).

■ All users and/or attendants must be instructed in use of
the product with the aid of these instructions for use. In
particular, the user(s) and/or attendant(s) must be
informed of the residual risk with the aid of the safety
instructions in these instructions for use.

■

The wheelchair was fitted to the user's requirements.
Further changes may only be made by authorised per
sonnel. We recommend a regular review of the wheel
chair fit in order to ensure an optimal fit over the long
term. For growing children and youth, fitting should be
performed every six months.

■

The wheelchair may only be combined with the options
listed in these instructions for use. Otto Bock assumes
no liability for combinations with medical devices
and/or accessories from other manufacturers outside
of the modular system.

■

Please note the information in the "Liability" chapter as
well.

■

The operational safety of the wheelchair can only be
ensured if it is used properly in accordance with the
information contained in these instructions for use. The
user is ultimately responsible for accident-free opera
tion.

Page 6 03/2011 B500 classic/advanced

Product description

■ Your wheelchair model may differ from the models
shown. In particular, not all the options described in
these instructions for use will be installed on your
wheelchair.

■

We reserve the right to make technical changes to the
version described in these instructions for use.

2 Product description

2.1 Function

The wheelchair is designed solely for individual use by per
sons who are unable to walk or who have a walking imped
iment, and can be operated either by the patient or by
another person.

The wheelchair can be used on solid ground both indoors
and outdoors.

2.2 Product Overview

Fig. 1 Main Components

1 Backrest 5 Brake release

2 Joystick and control panel 6 Footplate

3 Armrest (side panel) 7 Motor with drive wheel

4 Seat cushion 8 Anti-tipper

03/2011

Page 7B500 classic/advanced

Safety

Fig. 2 Anti-tipper

3 Safety

3.1 Explanation of warning symbols

WARNING

CAUTION

NOTICE

Warnings regarding possible risks of
severe accident or injury.

Warnings regarding possible risks of
accident or injury.

Warnings regarding possible technical
damage.

3.2 General Safety Instructions

WARNING

Improper wheelchair operation

Risk of falling, tipping, collision with persons or nearby
objects

► The power wheelchair may only be operated by a

qualified user.

► Have the user or attendant trained in operation of the

power wheelchair by authorised personnel instructed
by Otto Bock.

► As the user, read the entire Instructions for Use.

► The power wheelchair may not be used in case of

exhaustion or under the influence of alcohol or medic
ations.

► Ensure that the power wheelchair is only operated by

persons who do not have any mental limitations which
can temporarily or permanently restrict attentiveness
and judgment when driving in road traffic.

► You must observe road traffic regulations when driv

ing in road traffic.

Page 8 B500 classic/advanced

03/2011

Safety

WARNING

Failure to heed or observe the safety instructions

Risk of pinching, crushing, being pulled in, tipping, falling

► Observe all safety instructions in these instructions for

use and in all other applicable documents.

WARNING

Improper use of the power wheelchair

Risk of pinching, crushing, being pulled in, tipping, falling

► Only use the power wheelchair for its intended pur

pose.

► Only one person may be transported in the power

wheelchair at any one time.

CAUTION

Ignition of seat cushion and backrest cover

Risk of burns

► The seat cushion and backrest cover of the wheel

chair are not highly flammable, but there is a possibil
ity they may catch fire. Utmost caution is therefore
required near any open fires.

► Keep away from any sources of fire, in particular

burning cigarettes.

CAUTION

Extreme temperatures

Risk of hypothermia or burns on wheelchair parts

► Do not expose the product to any extreme temperat

ures (e.g. direct sunlight, sauna, extreme cold).

NOTICE

Overloading

Risk of damage to the product

► Don't exceed the maximum load capacity of 140 kg /

310 lbs.

► If the power wheelchair is equipped with a seat height

adjustment feature, then the maximum load capacity
is 130 kg / 285 lbs.

NOTICE

Use under wrong environmental conditions

Risk of damage to the product

03/2011

Page 9B500 classic/advanced

Safety

► Only use the power wheelchair within a temperature

range of -25°C to +50°C (-13°F to 122°F).

3.3 Reference to additional safety instructions

Observe additional safety instructions in the following
chapters:

■

Chapter "Preparation for Use"

■

Chapter "Usage" > "Driving Functions"

■

Chapter "Usage" > "Batteries/Charging Process"

■

Chapter "Usage" > "Power Seat Functions"

■

Chapter "Usage" > "Manual Seat Functions"

■

Chapter "Usage" > "Disassembly/Transport"

■

Chapter "Usage" > "Use in a Wheelchair Accessible
Vehicle"

■

Chapter "Usage" > "Care"

■

Chapter "Maintenance/Repair"

■

Chapter "Disposal"

Page 10 B500 classic/advanced

03/2011

3.4 Rating Plate and Warning Labels

Label Meaning

The rating plate is located on the side of the
frame below the seat.

Safety

A Type designation
B Maximum load capacity (see chapter "Technical Data")
C Maximum climbing ability (see chapter "Technical Data")
D Maximum speed (see chapter "Technical Data")
E Maximum front/rear axle load capacity
F Maximum gross weight
G Symbol for separate collection of electric and electronic devices.

Components of the power wheelchair and batteries may not be dis
posed of in household waste.

H CE symbol – product safety according to EU guidelines
I Serial number
J Read the instructions for use before using the product. Observe

safety instructions found in the instructions for use

K Manufacturer information / address
L Country of origin
A Electric driving mode: lock motor brake
B Manual pushing mode: unlock motor brake

Page 1103/2011B500 classic/advanced

Safety

Label Meaning

Risk of pinching. Do not reach into the danger area.

Page 12 B500 classic/advanced

03/2011

Delivery

4 Delivery

4.1 Scope of supply

The power wheelchair is normally shipped fully assembled
and fitted to the personal requirements of the respective
user.

The scope of delivery includes:

■

Fitted power wheelchair with main components

■

Installed options

■

Battery charger

■

Instructions for Use (user)

4.2 Options

The standard model can be fitted to the user's personal
requirements through a large range of options.

A full list of the available modules and accessories is
shown on the order form and in the accessories catalogue.

To use options: see Page22 et. seq.

4.2.1 Model B500 classic

The B500 classic power wheelchair can be equipped with
up to 2 of the following power seat options:

■

Power seat height adjustment

■ Power seat tilt available in 3 different versions (up to
20°, up to 30°, up to 45°)

■

Power back angle adjustment up to 30°

■

Power adjustable footrests

The wheelchair is controlled by an enAble40 control unit.

4.2.2 Model B500 advanced

The B500 advanced power wheelchair can be equipped
with up to 4 of the following power seat options:

■

Power seat height adjustment

■

Power seat tilt available in 3 different versions (up to
20°, up to 30°, up to 45°)

■

Power back angle adjustment up to 30°

■

Power adjustable footrests with 3 programmable ver
sions (only left, only right, or both sides control)

The wheelchair is controlled by an enAble50 control unit.
For additional information on enabling/user specific adjust

ment of certain enAble50 control unit functions: see inside
front cover.

Page 1303/2011B500 classic/advanced

Delivery

4.3 Storage

4.3.1 During daily use

The power wheelchair should always be protected against
external influences.

The control unit must be turned off.

4.3.2 In case of extended disuse

NOTICE

Deep discharge due to standby current

Risk of battery damage

► Remove the fuse if the wheelchair is not used for more

than 3 days.

INFORMATION

To remove the fuse: see Page80 et. seq.

Please observe the following if the power wheelchair is not
used for more than 3 days:

Storage Conditions

■

Maintain an ambient temperature between -40 °C and
+65 °C (-40 °F to 149 °F) and a relative humidity
between 45 and 85 %.

■

Store the power wheelchair in a dry, enclosed room
with sufficient air circulation and protection from extern
al influences.

■

Protect the wheels against ground frost, e.g. by reliev
ing them completely through assembly blocks or
wooden boards.

■

Fill the wheels with slight overpressure and rotate them
at regular weekly intervals to prevent flat tyres from
extended standing.

Note regarding the tires

■

If the power wheelchair is not moved for several days,
permanent colour changes may occur where the
wheelchair comes into contact with the surface it is
standing on. Therefore a suitable underlay should be
used if the wheelchair is parked for extended periods of
time.

■

Tires contain chemical substances that can react with
other chemical substances (such as cleaning agents or
acids).

Page 14 B500 classic/advanced

03/2011

Preparation for use

■ Black tires contain soot particles. They may leave black
marks where they come into contact with the ground.
Therefore Otto Bock recommends grey tires if the
wheelchair is primarily used indoors.

■

Direct sunlight/UV light causes the tires to age prema
turely. As a result, the tread surface hardens and
corner pieces break out of the tread.

■

Avoid unnecessary parking outdoors. The tires should
be replaced every 2 years regardless of wear and tear.

5 Preparation for use

5.1 Safety Instructions

WARNING

Improper modification of the settings

Risk of tipping, falling, improper user posture

► Do not modify the settings made by the authorised

personnel.

► In case of problems with the settings (unsatisfactory

sitting position, control panel problems, etc.), please
contact the authorised person who fitted your power
wheelchair.

WARNING

Incorrect handling of packaging materials

Risk of suffocation

► Packaging materials must be kept out of reach of chil

dren.

CAUTION

Uncontrolled movement of components when making
adjustments

Risk of crushing, pinching, blows to limbs

► Ensure that body parts, such as hands or head, are

never in the danger zone.

► Perform the work with the aid of a helper for support.

CAUTION

Unsecured screw connections

Risk of pinching, crushing, tipping, and falling due to com
ponents coming loose

► After all adjusting/readjusting work, re-tighten the

attachment screws/nuts firmly. Observe any torque
settings which may be specified.

03/2011

Page 15B500 classic/advanced

Preparation for use

► Any time you loosen a screw connection with thread

lock, replace it with a new screw connection or
secure the old screw connection with medium
strength thread locker (e.g. Loctite 241®).

5.2 Initial operation

The specialist dealer ships the power wheelchair fully
assembled and ready to use.

The following additional tasks may be required:

■

Adjusting settings: see Page17 et. seq.

■

Installing the side panels: see Page22

■

Installing the footrests: see Page23

■

Charging the battery: see Page40 et. seq.

5.2.1 Locking the back angle adjustment in place

If the power wheelchair is equipped with mechanical/power
back angle adjustment, proceed as follows if necessary:

1) Fold the backrest up.

2) Place the cross bolt on the end of the gas compression
spring or actuator into the bracket (see Fig.3, item. 1).

3) Push the lever down until the lock engages (see Fig.3,
item. 2).

4) Check the bolt and lock to ensure that they are
securely engaged.

Fig. 3 Place the cross bolt into the bracket (top); locked cross

bolt (bottom)

1 Cross bolt 2 Lock with lever

Page 16 B500 classic/advanced

03/2011

5.3.2 Adjusting the back angle

Preparation for use

5.3 Adjustments

5.3.1 Prerequisites

Fine fitting/adjusting work should always be performed with
the user. The user should sit upright in the wheelchair while
adjustments are made.

Seat height, seat width, and seat angle are set according
to the customer order and may only be changed by a spe
cialist dealer.

The following can be adjusted by the user:

■

Back angle

■

Armrest height/position

■

Lower leg length

■

Strap lengths

■

Control panel position

All parts of the product should be cleaned thoroughly
before adjustments are made.

Standard/contour seat

1) Pull on the strap until the locking bolts are free.

2) Change the backrest angle to the desired position.

3) Release the strap. The locking bolts engage at the
desired position.

Fig. 4 Adjusting the back angle

1 Release/locking strap 2 Locking bolts

03/2011

Page 17B500 classic/advanced

Preparation for use

Recaro® Seat

WARNING

Incorrect Recaro® Seat settings

Risk of falling, tipping

► Note that the maximum backrest angle is 30° while

standing and 20° while driving.

INFORMATION

For further Recaro® Seat settings: Adjusting the Recaro®
Seat.

► Turn the knob on the left or right side of the backrest

until the backrest is in the desired position (see Fig.5,
item. 2).

Fig. 5 Adjusting the Recaro® Seat angle

1 Release handle

2 Back angle adjustment knob

5.3.3 Adjusting the side panels

INFORMATION

To remove and install the side panels: see Page22.

Page 18 B500 classic/advanced

03/2011

Preparation for use

Adjusting the armrest height

1) Loosen the Allen head bolt on the side panel (see
Fig.6).

2) Slide the armrests up or down to the desired position.

3) Tighten the Allen head bolt.

Fig. 6 Allen head bolt for height adjustment

Adjusting the armrest to the forearm length

1) Loosen the 2 Allen head screws on the bottom of the
armrest (see Fig.7).

2) Slide the armrest with the spare tube forward or back
wards along the attachment rail to the desired position.

3) Tighten the 2 Allen head screws.

Fig. 7 Adjusting the armrest depth

5.3.4 Adjusting the footrests

INFORMATION

To remove and install the footrests: see Page23.

03/2011

Page 19B500 classic/advanced

160

Preparation for use

Adjusting the lower leg length

CAUTION

Exposed pinch points

Pinching, crushing of fingers

► Ensure that your fingers are not in the danger area

when flipping the footrests up or down.

1) Loosen the 2 Allen head screws on the footrest bar
(see Fig.8).

2) Slide the footplate up/down to the desired position.

INFORMATION Do not pull the footrest bar more
than 160 mm out of the bracket, otherwise it no
longer provides secure support.

3) Re-tighten the footrest bar screws.

Fig. 8 Adjusting the lower leg length

5.3.5 Adjusting the belt lengths

To adjust the belt lengths: see Page64.

5.3.6 Adjusting the control panel

INFORMATION

The power wheelchair may be equipped with an optional
height-adjustable or swing-away control panel holder (see
Page63)

Page 20 B500 classic/advanced

03/2011

Preparation for use

Adjusting the control panel to the forearm length

1) Loosen the 3 set screws on the bottom of the armrest.

2) Slide the rail with control panel forwards or backwards.

INFORMATION If the control panel rail is too long,
then the excess length can be trimmed.

3) Tighten the 3 set screws on the bottom of the armrest.

Fig. 9 Adjusting the control panel

Changing the control panel side

By default, the control panel is mounted on the side spe
cified in the order. It can also be mounted on the other side
later on if the user so desires.

INFORMATION

The control panel mounting side may only be changed by
authorised personnel.

5.3.7 Changing control unit parameters

WARNING

Wrong configuration settings

Risk of falling, tipping, collision with persons or objects in
the vicinity

► Programming may only be performed by authorised

personnel trained by Otto Bock. Otto Bock and the
control unit manufacturer are not liable in case of
damage caused by programming which was not per
formed properly and/or which was not adjusted prop
erly according to the user's abilities.

► Note that modified parameter settings in the configur

ation can lead to changes in driving characteristics. In
particular, changes to the speed, acceleration, brak
ing or joystick settings can lead to unexpected and
therefore uncontrollable driving characteristics and
cause an accident.

03/2011

Page 21B500 classic/advanced

Operation

► After configuration/programming is complete, the user

must test the driving characteristics of the power
wheelchair under the supervision of the authorised
personnel.

If necessary, the authorised personnel can fit the already
preprogrammed wheelchair control system and accessor
ies to the specific user requirements.

6 Operation

6.1 Side panels

Removing the side panel

1) Loosen the thumb screw on the side panel holder (see
Fig.10).

2) Withdraw the side panel from the side panel holder
and set it aside.

3) Only for side panel with control panel: Carefully allow
the side panel with control panel to hang down.

INFORMATION If necessary, the hook and loop clos
ures for routing the control panel cable can be
loosened and the control panel can be removed.

Fig. 10 Side panel thumb screw

Installing the side panel

1) If necessary, install the control panel and fasten the
hook and loop closures for routing the control panel
cable.

2) Insert the side panel into the side panel holder.

3) Tighten the thumb screw on the side panel holder
again.

Page 22 B500 classic/advanced

03/2011

6.2 Footrests

CAUTION

Exposed pinch points

Pinching, crushing of fingers

► Ensure that your fingers are not in the danger area

when flipping the footrests up or down.

Removing the footrests

1) Unhook the calf band.

Operation

2) Flip the footplate up.

3) Release the footrest lock (see Fig.11).

4) Flip the footrest out or in.

5) Pull the footrest up and remove it.

Fig. 11 Locking the footrest

Installing the footrests

Proceed as follows if a footrest must be installed:

1) Hook the footrest into the holder from above.

2) Swing the footrest forward until the footrest lock
engages.

3) Hook the calf band into the holder.

03/2011

Page 23B500 classic/advanced

Operation

6.3 Getting in / transfer

CAUTION

Getting in and out incorrectly

Risk of falling, tipping, pinching, crushing

► Turn the control unit off while getting in and out, in

order to avoid accidental driving.

► Note that the armrests are not capable of bearing full

body weight, and therefore must not be used for get
ting into or out of the wheelchair.

► Ensure that your limbs are not in the danger area

when flipping the footrests up or down.

The modular design of the power wheelchair and the ease
with which you can remove the side panels and footrests
make it easy to get into and out of the wheelchair from the
side or from the front.

Users can choose the method for getting into and out of the
wheelchair which is most suitable for them.

Getting in from the front

CAUTION

Exposed pinch points

Pinching, crushing of fingers

► Ensure that your fingers are not in the danger area

when flipping the footrests up or down.

1) Place the seat in the horizontal position.

2) Flip the footrests up (see Fig.12) or remove them to
gain a larger entry and exit area (see Fig.11). Remov
ing the footrests increases the available entry or exit
area (see Fig.13).

3) Have an attendant assist you or use a transfer lifter to
get into and out of the power wheelchair.

4) Flip the footrest down or reinstall it and flip it down (see
Page23).

5) Put the lap belt on when necessary (when driving on
the road).

Page 24 B500 classic/advanced

03/2011

Operation

Getting in from the side

1) Place the seat in the horizontal position.

2) Bring the power wheelchair as close as possible to
where the user is sitting.

3) Remove the side panel (see Page22).

INFORMATION If the control panel is on the side
from which the user is getting into the wheelchair, it
can be removed and laid onto the seat.

4) Remove the footrest if necessary (see Fig.11).

Fig. 12 Footrest flipped up

Fig. 13 Footrest removed

5) Slide onto the seat from the side.

INFORMATION A ramp makes it easier to get into
and out of the wheelchair from the side.

6) Install the side panel (see Page22).

7) Put the lap belt on when necessary (when driving on
the road).

6.4 Control unit

CAUTION

Uncontrolled driving behaviour due to interference
from electromagnetic fields

Risk of falling, tipping, collision with persons or nearby
objects

03/2011

Page 25B500 classic/advanced

Operation

► Switch all mobile devices off while driving.

► Turn the control unit off when it is not needed.

The power wheelchair is controlled by a VR2 controller.
Since the control unit is programmable, it can be adapted

to the personal requirements of the user; e. g. the speed,
acceleration and deceleration values can all be adapted.

6.4.1 Control Panel

The power wheelchair is operated using the control panel.
The control panel consists of a keypad, LCD display and

joystick. The charging/programming receptacle and two
inputs for external push-buttons are located on the under
side.

The control panel is used to switch the power wheelchair
on and off, to enter driving commands and to display the
current state of certain functions and components.

Fig. 14 enAble50 control panel (identical to: enAble40)

1 Joystick 5 [Warning Flasher On/Off]

Button

2 [On/Off] Button 6 [Horn] Button

3 LCD Display 7 [Direction Indicator

Left/Right] Button

4 [Mode] Button 8 [Lights On/Off] Button

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Operation

[On/Off] Button

Holding this button turns the power wheelchair on or off
and activates/deactivates the drive-away lock.

[Mode] Button

Pressing the button briefly increases/decreases the speed
level. After reaching the maximum speed level, you can
change back to speed level 1 by pressing the button again
(1-2-3-4-5-1-…).

Holding the button (for at least 2 seconds) switches the
control unit into the Power Seat Functions menu.

Fig. 15 Connections on the underside

1 External button connection [On/Off] (only with enAble50)

2 External button connection [Mode] (only with enAble50)

3 Charging / programming receptacle

6.4.2 Buttons and display functions

Joystick

The speed and driving direction are controlled with the joy
stick. When a seat option is activated, the joystick operates
this seat option.

03/2011

[Warning Flasher On/Off] Button

All 4 warning flashers are activated/deactivated when this
button is pressed.

[Horn] Button

The horn will sound as long as the button is pressed.

[Direction Indicator Left] and [Direction Indicator Right]
Button

Pressing these buttons activates/deactivates the respective
front and rear direction indicators. The direction indicator
lights turn off automatically after 20 seconds.

Page 27B500 classic/advanced

Operation

[Lights On/Off] Button

The front and rear lights are activated/deactivated by
pressing the button.

LCD Display

The LCD display is the communication interface between
the user and the control unit. It indicates the selected
speed level, the remaining battery capacity, the status of
power options as well as warnings and errors. All display
symbols are displayed while the power wheelchair turns
on.

Fig. 16 LCD display with all symbols

1 Direction indicator, left 9 Excess temperature

2 Battery capacity 10 Direction indicator, right

3 Power backrest 11 Drive wheel brake

4 Power seat tilt 12 Warning

5 Control Panel 13 Creeping speed

6 Drive-away lock 14 Power module

7 Speed level 15 Drive motor

8 Open-end wrench 16 Light

Page 28 B500 classic/advanced

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Operation

Selected speed level (LCD display)

After turning the wheelchair on, the display indicates the
selected speed level and battery capacity in the Driving
menu:

Display Information

Right: Selected speed level = 1

Left: Battery capacity

Battery capacity indicator (LCD display)

The "Battery Capacity" LCD display (see Fig.16, item 2) is
divided into 7 segments which indicate the current battery
capacity:

■

Immediately after switching the power wheelchair on,
the battery indicator shows the last saved battery
capacity. Charge condition following last use.

■

After driving for a little bit, the battery display indicates
the exact battery status.

■

A charge of 100% corresponds to 7 segments on the
battery symbol.

■ If one segment turns of, this means that the battery’s
capacity has decreased by approximately 14%. At a
total range of approximately 25 km over even terrain,
each segment corresponds to a range of approximately

3.5 km when the speed is kept constant.

■

If only 1 blinking segment is shown on the LCD display,
then the battery is in a low voltage state. Since further
use results in battery damage, the warning signal is
also shown on the LCD display. The battery must be
charged immediately.

■

If all 7 segments on the LCD display are flashing, this
means that the battery is over voltage. Since further
use results in battery damage, the warning signal is
also shown on the LCD display.



■

The charging process is indicated by the battery seg
ments lighting up one after the other. The driving func
tion is locked out while the battery is charging.

Battery indicator on the control panel

Display Information

Full battery capacity (right: selected
speed level)

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Page 29B500 classic/advanced

Operation

Display Information

Low battery capacity

Charging process with drive-away
lock

Battery is under voltage, with warn
ing symbol

Battery is over voltage, with warning
symbol

Further LCD display functions

Further LCD display symbols are described in the following
chapters:

■

see chapter "Usage" > "Drive-away Lock"

■

see chapter "Usage" > "Seat Functions"

■

see chapter "Maintenance/Repair" > "Troubleshooting"

6.5 Driving Functions

6.5.1 Safety Instructions

CAUTION

Lack of driving experience

Risk of tipping, falling

► Practice on level, open ground first.

Dangers while driving

WARNING

Uncontrolled rolling

Risk of collision with persons nearby objects

► Note the lack of brake functionality when the brake is

deactivated. The brake function may only be released
in the presence of an attendant.

► Should the user be unable to release the brake him

self, the brake can be released by the attendant.

► Note that when the power wheelchair is moved on an

incline, the attendant must provide the required brake
force.

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Operation

► Lock the brake every time before parking the power

wheelchair.

CAUTION

Insufficient support of the seated person

Risk of falling out of the power wheelchair

► Always wear the safety belt / lap belt when driving in

public.

CAUTION

Risk of uncontrolled driving behaviour

Risk of falling, tipping, collision with persons or nearby
objects

► If any faults, defects or other hazards that can lead to

personal injury are detected, the power wheelchair
must be taken out of service immediately.

► Contact your authorised specialist dealer if uncon

trolled movement of the power wheelchair occurs due
to a malfunction.

CAUTION

Driving in the dark

Risk of an accident involving other traffic, collision with
persons or objects in the vicinity.

► Wear bright clothing or clothing with reflectors.

► Turn the lights on (if available) or install active lights.

► Ensure that the reflectors on the power wheelchair

are clearly visible.

CAUTION

Interference from electromagnetic fields

Risk of falling, tipping, collision with persons or nearby
objects

► Turn all mobile devices off while driving, since the driv

ing characteristics of the power wheelchair are
affected by electromagnetic fields (mobile phones or
other radiating devices).

► Turn the control unit off when it is not required, since

the power wheelchair may generate electromagnetic
fields that can cause interference with other devices.
The power wheelchair has been tested according to
EMC regulations.

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Page 31B500 classic/advanced

Operation

INFORMATION

During use of the power wheelchair, electrical discharges
(high voltage with low current; discharge via the user)
may occur which are caused by factors such as friction.
However, these do not represent a health hazard. The
resulting discomfort can be prevented by customisation
measures (attaching a mechanical discharge contact /
grounding strap to the power wheelchair frame). The
user's environment must be taken into consideration.

Electrostatic discharge may also occur if the power
wheelchair is equipped with puncture-proof tires. Retrofit
ting the wheelchair with pneumatic tires can correct this
problem.

Danger during use of public transportation, elevators,
lifting platforms

WARNING

Use of public transportation, elevators, lifting platforms

Risk of tipping, collision with persons or objects in the
vicinity

► Always turn the power wheelchair control unit off

when using buses, trains, elevators, or lifting plat
forms.

► Engage the brake.

Danger due to defective tires

CAUTION

Defective tires

Risk of accident/falls due to poor traction, reduced brak
ing effect, or lack of manoeuvrability

► Check for proper tire pressure. The correct tire pres

sure is printed on the casing.

► Ensure that the drive wheels have the same pressure.

► Ensure that the tires have sufficient tread depth.

► Avoid parking outside and in direct sunlight (UV radi

ation) since this causes the tires to age quickly. Otto
Bock recommends replacing the tires every 2 years
regardless of the amount of wear.

► Always ensure sufficient clearance to sources of heat.

If the wheelchair is parked for an extended period of
time or the tires overheat (e.g. in the vicinity of radiat
ors or in case of exposure to strong sunlight behind
glass), the tyres may become permanently deformed.

► Move your power wheelchair frequently or have a way

to jack it up for storage.

Page 32 B500 classic/advanced

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Operation

6.5.2 Driving notes

General:

■

Beginners should always drive slowly.

■

Always take curves slowly.

■

Uncontrolled driving behaviour may occur on uneven
ground. Therefore the speed must always be adjusted
to the ground conditions.

■

Driving backwards should be limited to manoeuvring or
short distances on level ground.

Obstacles (steps, curbs):

■

The critical obstacle height is 50 mm (2 in). Obstacles
higher than 50 mm (2 in) may not be crossed.

■

Always approach obstacles directly from the front (nev
er at an angle with only one caster wheel).

■

Always drive forward over obstacles.

■

Always reduce speed to cross over obstacles (e.g.
select speed level 1).

■

Avoid jumping down from steps.

■

Don't lean out of the wheelchair while crossing
obstacles

■ Uncontrolled driving behaviour may occur on uneven
ground. The speed must always be adjusted to the
ground conditions.

Inclines and downgrades:

■

Ascending or descending slopes up to max. 17 % is
permitted. Driving on steeper inclines or downgrades is
not permitted. Otherwise safe braking is not ensured.

■

In order to navigate downgrades safely, the speed
must be reduced according to the slope (e.g. select
speed level 1).

■

Never drive downhill backwards.

All terrain driving:

The speed must be reduced in dangerous areas (e.g.
select speed level 1).

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Page 33B500 classic/advanced

Operation

■ Typical dangerous areas include:

- narrow paths along waterways/slopes/cliffs (e.g.
quay walls, dikes, etc.)

- cramped rooms or areas.

- steep downgrades (e.g. in the mountains, facing
streets).

- unsurfaced areas (e.g. on construction sites, cross
ings, train crossings).

- snow-covered or icy areas.

6.5.3 Switching on and off

WARNING

Lack of brake functionality

Risk of falling, tipping, collision with persons or nearby
objects

► Ensure that the brake release lever is locked every

time before you drive.

► Check to ensure that the brakes are operational and

functional every time before you drive.

WARNING

Defective safety functions

Risk of falling, tipping, collision with persons or nearby
objects

► Before every use, ensure that the power wheelchair

and its safety functions are in safe and proper condi
tion.

► Only use the power wheelchair if all safety functions,

e.g. the automatic brakes, are functional.

INFORMATION

In dangerous situations, the power wheelchair can be
turned off at any time using the on/off button. When the
button is pressed, the power wheelchair brakes immedi
ately and the electrical functions cease. Malfunctions
such as an insufficient supply of power to the brake are
recognised by the software, triggering an emergency stop
or reducing the speed of the power wheelchair. A warning
signal will also sound.

Page 34 B500 classic/advanced

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Operation

■ Pressing the [On/Off] button (see Fig.14, item 2) turns
the power wheelchair control unit on or off. The power
wheelchair turns off automatically if the control panel is
not used for an extended period of time.

■

The power wheelchair brakes automatically and comes
to a stop if it is turned off with the [On/Off] button while
driving.

■

The specialist dealer can use the parameter settings to
specify the speed level or menu of the power wheel
chair after it is turned on, according to the user's
requirements.

6.5.4 Selecting the speed levels

■

The power wheelchair has a programmable number of
speed levels (delivery condition = 5 speed levels).

■

The speed level is increased by briefly pressing the
[Mode] button (see Fig.14, item 4).

■

After reaching the maximum speed level, the next
speed level is 1.

■

The LCD display indicates the selected speed level in
the Driving menu:

Display Information

Selected speed level = 1 (left: bat
tery capacity)

6.5.5 Driving

WARNING

Driving on slopes, over obstacles

Risk of falling, tipping

► Only drive on slopes up to max. 17 %.

► Only cross obstacles which are not higher than 50

mm (2 in).

► Do not cross over any obstacles while driving on

inclines or downgrades.

► Reduce speed when driving downhill (e.g. select

speed level 1).

► Only drive over obstacles such as steps or low curbs

at a reduced speed (max. 3 km/h).

► Approach obstacles at right angles and drive over

them at one go.

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Page 35B500 classic/advanced

Operation

► Only drive on inclines and over obstacles with the

seat tilt and seat height adjustments lowered and with
a vertical backrest. The seat can be tilted back
slightly when driving downhill.

► Avoid getting into or out of the power wheelchair on

slopes.

► Do not drive over stairs.

WARNING

Driving on unsuitable surfaces

Risk of falling, tipping

► Do not operate the power wheelchair on very smooth

surfaces (e.g. icy surfaces) or very rough surfaces
(e.g. gravel or rubble).

INFORMATION

The control unit of the power wheelchair switches to a
safe mode at elevated temperatures and after driving
uphill for extended periods of time, limiting the perform
ance of the power wheelchair.

The user is able to drive the power wheelchair out of a
hazardous situation at any time. The power wheelchair is

fully functional again once the unit has cooled down suffi
ciently (this may take several minutes depending on the
ambient temperature).

The power wheelchair is controlled by moving the joystick:

■

The further the joystick is deflected from the centre pos
ition, the faster the power wheelchair will drive in this
direction.

■

The maximum speed at full deflection of the joystick
depends on the selected speed level.

■

Releasing the joystick automatically activates the brake
function, bringing the power wheelchair to a halt.

The mechanical brakes are activated automatically when
the power wheelchair comes to a stop so that it cannot roll.

6.5.6 Drive-away lock

INFORMATION

For the B500 advanced/B500 plus, the drive-away lock
can only be activated as described if the function was
previously enabled (see front inner cover). The factory
default setting can be changed by the specialist dealer.

Please ask your specialist dealer about the setting selec
ted for your wheelchair.

Page 36 B500 classic/advanced

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Operation

The power wheelchair control unit features an electronic
drive-away lock. This function is activated/deactivated via
the control panel.

The drive-away lock can only be activated or deactivated if
the "Drive-away lock" parameter is set to "Function
enabled". Unless otherwise specified in the order, the drive­away lock is set to "Function disabled" at the factory.

If this setting needs to be changed, this is done by the
authorised person who fitted the wheelchair.

Activating the drive-away lock

► While the control unit is turned on, press and hold the

mode button for at least 5 seconds.

→ A short beep confirms that the drive-away lock was

activated.

INFORMATION If keypress beeps are activated, then
the drive-away lock is only active after the second
beep.

→ The control unit turns itself off.

→ The key symbol on the LCD display indicates that the

drive-away lock is activated:

Display Information

Drive-away lock

Deactivating the drive-away lock

1) Push the [On/Off] button on the control panel.

→ The control unit is turned on. The LCD display

indicates that the drive-away lock is activated:

2) Push the joystick all the way forward until a beep
sounds.

3) Push the joystick all the way back until a beep sounds.

4) Release the joystick.

→ A long beep confirms that the driving function is

enabled.

→ The battery indicator and speed level are shown on the

LCD display.

→ The drive-away lock is deactivated and driving is

enabled.

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Page 37B500 classic/advanced

Operation

Problem resolution

The drive-away lock remains active if the joystick is not
moved correctly.

1) Turn the control unit off in order to deactivate the drive­away lock again.

2) Turn the power wheelchair on.

3) Deactivate the drive-away lock again.

6.5.7 Adjusting the driving characteristics

WARNING

Wrong configuration settings

Risk of falling, tipping, collision with persons or objects in
the vicinity

► Programming may only be performed by authorised

personnel trained by Otto Bock. Otto Bock and the
control unit manufacturer are not liable in case of
damage caused by programming which was not per
formed properly and/or which was not adjusted prop
erly according to the user's abilities.

► Note that modified parameter settings in the configur

ation can lead to changes in driving characteristics. In
particular, changes to the speed, acceleration, brak
ing or joystick settings can lead to unexpected and
therefore uncontrollable driving characteristics and
cause an accident.

► After configuration/programming is complete, the user

must test the driving characteristics of the power
wheelchair under the supervision of the authorised
personnel.

Adjusting and setting the speed, acceleration, and delay
values to the individual user requirements is performed
exclusively by authorised personnel trained by Otto Bock.

6.6 Activating/deactivating the brakes

WARNING

Uncontrolled rolling

Risk of collision with persons nearby objects

► Note the lack of brake functionality when the brake is

deactivated. The brake function may only be released
in the presence of an attendant.

► Should the user be unable to release the brake him

self, the brake can be released by the attendant.

Page 38 B500 classic/advanced

03/2011

Operation

► Note that when the power wheelchair is moved on an

incline, the attendant must provide the required brake
force.

► Lock the brake every time before parking the power

wheelchair.

WARNING

Improper maintenance, repair, or adjustment work on
the brake

Risk of falling, tipping, collision with persons or nearby
objects

► Repairs and adjustments to the brake may only be

made by authorised personnel trained by Otto Bock.
Incorrect settings can lead to a loss of braking power.

It is possible to push the power wheelchair in case of con
trol unit failure or insufficient battery capacity. To do so, it is
necessary to disable the brake using the release mechan
ism described below.

The brake release is located between the frame and seat,
on either the right or left side according to customer prefer
ence.

Disabling/deactivating the brake

1) Pull the brake release bolt up (see Fig.17, item 1).

→ The brake release lever (see Fig.17, item 2) is

unlocked.

2) Push the brake release lever forward until it engages.

→ The brake is disabled, all braking systems are turned

off.

→ The control unit will recognise that the brake has been

disabled and deactivate the driving function.

→ A warning will appear on the LCD monitor as soon as

the joystick is deflected:

Display Information

Brake is disabled

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Page 39B500 classic/advanced

Operation

Fig. 17 Disabling the brake

1 Brake release bolt 2 Brake release lever

Enabling/activating the brake

Fig. 18 Enabling the brake

6.7 Batteries/charging process

6.7.1 Safety Instructions

1) Push the brake release lever (see Fig.18, arrow) up
until the brake release bolts engage.

2) Turn the control unit off and on again.

→ The driving function is activated.

NOTICE

Unauthorised battery replacement

Risk of battery damage

► Replacing the battery or modifying the battery installa

tion position may only be performed by authorised
personnel trained by Otto Bock.

Page 40 B500 classic/advanced

03/2011

Operation

► The characteristic curve of the battery charger estab

lished at the factory matches the batteries included in
the scope of delivery and may not be altered inde
pendently.

6.7.2 General

The standard version of the power wheelchair is equipped
with 2 maintenance-free gel batteries with a capacity of 63
Ah.

The batteries are located beneath the wheelchair seat in a
battery drawer. If the power wheelchair is not equipped
with a drive wheel suspension, then the batteries are loc
ated in a tray.

An option is also available to equip the power wheelchair
with two lead-acid batteries with a capacity of 60 Ah.

The range of the power wheelchair is determined by the
battery capacity. The following factors influence battery
capacity:

■

Ambient temperature

■

Age of the batteries

■

Driving load

■

Charging method

When driving at a low charge condition, the power wheel
chair control unit switches to a creeping speed which
saves power.

6.7.3 Battery charging information

The following information should be observed for an optim
al charging cycle:

■

The batteries can be charged at any time, regardless
of the remaining battery capacity.

■

It takes about 10 hours until a discharged battery (only
1 flashing segment) is completely charged. When the
charging process is complete, the battery charger can
remain connected to the power wheelchair with no risk
of overcharging or damaging the battery. The battery
charger features a programmed recharging phase that
will maintain the battery capacity at the level that has
been reached.

■

If the power wheelchair is used every day, the battery
should be charged every night.

■

Never discharge the batteries completely (deep dis
charge).

Extended driving at the lower end of the battery indicator
results in deep discharge which causes battery damage.

03/2011

Page 41B500 classic/advanced

Operation

■ The batteries will gradually discharge if the wheelchair
is not used for extended periods of time. If the power
wheelchair is not used for an extended period, the bat
teries should be charged 1 x per week to maintain their
capacity.

■

The fuse should be removed if the wheelchair is not
used for more than 3 days.

■

The power wheelchair control unit must be switched off
while the batteries are charging to allow all of the char
ging current to be fed into the battery.

6.7.4 Battery charger

NOTICE

Improper use of the battery charger

Risk of damage of or by the battery charger, battery dam
age

► Only use battery chargers from Otto Bock, which

have been verified and approved by Otto Bock for use
with the respective batteries (observe information on
the battery charger).

► Ensure that the information on the battery charger rat

ing plate matches the country-specific voltage of the
respective mains grid.

► Only use the battery charger within the specified tem

perature and humidity limits.

► Place the rubber feet of the battery charger on a level

surface.

► If you locate the battery charger near a window, pro

tect it from direct sunlight.

► Avoid overheating of the battery charger. Ensure that

the ventilation slits on the back of the battery charger
are not covered during the charging process.

► Switch the power wheelchair control unit off during

the charging process so that all of the charging cur
rent is fed into the battery.

► Avoid dust and dirt.

► Only clean the battery charger with a dry cloth.

The battery charger is designed for maintenance-free and
low-maintenance batteries.

Please see the instructions for use supplied with the battery
charger for further details on use and on the LED indicat
ors.

Page 42 B500 classic/advanced

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Operation

6.7.5 Charging the battery

WARNING

Discharge of explosive gases during battery charging

Risk of injury due to fire or explosion

► Ensure sufficient ventilation in enclosed spaces.

► Don't smoke or light fires.

► Sparks must be avoided.

► Do not cover the ventilation slits in the case.

► Only use battery chargers which have been verified

and approved by Otto Bock for use with the respect
ive batteries (observe information on the battery char
ger). Non-observance may result in explosion of the
battery, resulting in a health hazard through contact
with the battery acid.

► Follow the battery manufacturer safety instructions.

► Wear protective goggles.

WARNING

Sparks

Risk of injury due to fire or explosion

► Switch the battery charger off and disconnect the

mains plug before you disconnect the battery.

NOTICE

Improper charging

Risk of battery damage

► Avoid deep-discharge of the battery. Otto Bock does

not provide any warranty for damage due to deep dis
charge.

► Charge the battery as soon as possible if the last

three segments of the "Battery Capacity" LED indicat
or are flashing.

► Charge the batteries weekly if the power wheelchair

is not used for an extended period of time.

1) Turn the control unit on the power wheelchair off.

2) Plug the battery charger plug into the charging/pro
gramming receptacle on the power wheelchair control
panel (see Fig.19).

3) Connect the battery charger to the mains plug and turn
it on.

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Page 43B500 classic/advanced

Operation

→ The charging process starts automatically, and

the battery charge condition is indicated by the
LED indicator on the control panel and on the
battery charger.

4) Turn the battery charger off when the charging process
is complete.

5) Remove the battery charger mains plug.

6) Disconnect the battery charger plug from the control
panel.

7) Turn the power wheelchair control unit on.

→ The power wheelchair is ready to use.

Fig. 19 Charging / programming receptacle on the control panel

6.8 Power seat functions

The power wheelchair can be equipped with a range of
optional power seat functions.

6.8.1 Safety Instructions

WARNING

Exposed pinch points in the seat adjustment and lifting
areas

Risk of pinching, crushing of limbs

Page 44 B500 classic/advanced

03/2011

Operation

► Note that when power seat options are used, inherent

pinch and shear points are located between the seat
frame and the power wheelchair frame.

► Ensure that no body parts, such as hands or feet, are

in the danger area while power seat options are used.

► Ensure that no interfering objects, such as clothing or

other obstacles, are in the danger area while power
seat options are used.

WARNING

Overloading of the actuators

Risk of falling, tipping, pinching, crushing of limbs

► Avoid overloading the actuators. Overloading may

cause the spindle nut to break, causing the seat to
sag or the backrest to flip back suddenly.

NOTICE

Improper use of power seat options

Risk of damage to the product

► When using power seat options, note that the seat

function actuators are not designed for continuous
use, only for short-term use under limited loads (10%
load, 90% idle time).

► Observe the following guidelines: At maximum load

capacity, 10 seconds of activation time must be fol
lowed by approx. 90 seconds of idle time. The power
seat functions are considered independently of the
driving function for this purpose.

► Only activate the power seat functions if no fault or

error is present.

6.8.2 Power seat height adjustment

WARNING

Improper use of the seat height adjustment feature

Risk of falling, tipping

► A maximum load of 130 kg may be applied to the seat

with seat height adjustment function.

► Put the belt system (lap belt, four-point belt) on and

do not lean past the seat surface while the seat is
raised.

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Page 45B500 classic/advanced

Operation

► Only use the seat height adjustment feature with the

backrest in the upright position.

► Only use the seat height adjustment feature on level

ground.

► Note that the field of vision is limited when driving with

the seat raised.

► Only drive for short distances with the seat raised,

e.g. to manoeuvre.

► Note that creep speed is automatically activated

when the seat height adjustment function is used. If
this is not the case, contact a specialist dealer imme
diately. Only use the power wheelchair with the seat
height adjustment in its lowest position until the fault is
repaired.

NOTICE

Lack of maintenance of the seat height adjustment
feature

Risk of damage to the power wheelchair

► Inspect the seat height adjustment feature for visible

signs of damage at least 1 x per month and ensure all
screw connections are tight.

► Check for correct tire pressure.

NOTICE

Risk of transportation damage.

Risk of damage to the power wheelchair

► Always lower the seat height adjustment feature fully

for loading or transportation.

The power wheelchair can be equipped with a power seat
height adjustment feature. The seat height adjustment fea
ture increases the height of the seat above the drive unit by
up to 40 cm (15 in).

Fig. 20 Seat with raised seat height adjustment feature

Page 46 B500 classic/advanced

03/2011

The driving function remains available even when the seat
is raised. The speed is reduced (creep speed) as soon as
the seat leaves the lowest position, because the power
wheelchair is less resistant to tipping. This is indicated on
the control panel by the snail symbol on the LCD display:

Display Information

Creeping speed

6.8.3 Power seat tilt

The power wheelchair can be equipped with a power seat
tilt function.

The power seat tilt function allows the seat to be tilted, for
example to relieve pressure.

The power seat tilt is available in 3 different versions:

■

Power seat tilt up to 20°

■

Power seat tilt up to 30°

■

Power seat tilt up to 45°

The seat can be tilted back continuously up to the angle
specified above.

Operation

Fig. 21 Power seat tilt

6.8.4 Power back angle adjustment

The power wheelchair with standard or contour seat can
be equipped with a power back angle adjustment feature.

The power back angle adjustment feature allows for con
tinuous tilting of the backrest up to 30°.

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Page 47B500 classic/advanced

Operation

Fig. 22 Power back angle adjustment

6.8.5 Power footrests

To avoid permanent pressure points or to ensure anti-shock
support, the power wheelchair can be equipped with
power adjustable footrests. The footrests can be activated
individually or at the same time, depending on the configur
ation.

The footplates can be flipped up to increase the entry and
exit area.

Fig. 23 Power footrest flipped up

6.8.6 Controlling power seat functions

■

Holding the [Mode] button (approx. 2 seconds; see
Fig.14) activates control of the first power seat func
tion, e.g. the power back angle adjustment or seat tilt.

■

The LCD display indicates the currently selected seat
function (see following chapter "Joystick and Display
Functions").

■

To switch between the various seat functions, press the
[Mode] button briefly or move the joystick to the right.

■

Once a seat function is selected, it is activated by mov
ing the joystick forward or backward.

Page 48 B500 classic/advanced

03/2011

■ The electric motor moves the seat function as long as
the joystick is deflected, and stops at the end positions.

■

Holding the [Mode] button again (approx. 2 seconds;
see Fig.14) deactivates the seat function in the selec
ted position. The driving function is available again,
and the speed level indicator is lit.

Operation

03/2011

Page 49B500 classic/advanced

Operation

6.8.7 Joystick and display functions

The following power seat functions can be controlled with the joystick:

Display Seat function Joystick* deflection

Power seat height adjustment Forward: Seat surface moves up

Back: Seat surface moves down

Power seat tilt** Back: Seat slowly tips back

Forward: Seat slowly tips toward the horizontal position

Power back angle adjustment Forward: Backrest tilts forward

Back: Backrest tilts backward

Power footrest - left Forward: left footrest moves forward

Back: Left footrest moves back

Power footrest - right Forward: Right footrest moves forward

Back: Right footrest moves back

Power footrests, coupled Forward: Both footrests move forward

Back: Both footrests move back

* Deflection direction can be modified by the specialist dealer; ** Seat surface and backrest

Page 50 03/2011 B500 classic/advanced

Operation

6.9 Manual seat functions

The power wheelchair can be equipped with a range of
optional manual seat functions.

6.9.1 Safety Instructions

WARNING

Exposed pinch points in the seat adjustment area

Risk of pinching, crushing of limbs

► Note that when manual seat options are used, inher

ent pinch and shear points are located between the
seat frame and the power wheelchair frame.

► Ensure that no body parts, such as hands or feet, are

in the danger area while manual seat options are
used.

► Ensure that no interfering objects, such as clothing or

other obstacles, are in the danger area while manual
seat options are used.

6.9.2 Manual seat tilt

WARNING

Unintentional lowering of the seat tilt

Risk of pinching, crushing of limbs

► Note that the seat can drop suddenly if the release

lever is operated while the seat is tilted.

The power wheelchair with standard or contour seat can
be equipped with a manual seat tilt function.

The manual seat tilt function allows the seat to be tilted, for
example to relief pressure. The seat can be tilted back con
tinuously by up to 20°.

Tilting the seat back

1) Activate the release lever on the armrest (see Fig.24).

2) Move the seat to the desired angle.

3) Let go of the release lever.

→ The seat is tilted back.

The seat is easier to tilt if the backrest is tilted back.

Page 5103/2011B500 classic/advanced

Operation

Fig. 24 Tilting the seat manually

→ The backrest is adjusted.

6.9.3 Manual back angle adjustment

The power wheelchair with standard or contour seat can
be equipped with a manual back angle adjustment func
tion.

The manual back angle adjustment function allows for con
tinuous tilting of the backrest up to 20°.

Fig. 25 Adjusting the backrest manually

6.9.4 Manual elevating footrests

The power wheelchair can be equipped with manual elev
ating footrests.

The manual elevating footrests make it possible to prevent
a constant pressure load or to provide anti-shock support.

Adjusting the back angle

1) Activate the release lever on the armrest (see Fig.25).

Swivelling the footrest

1) Activate the release lever on the footrest (see Fig.26).

2) Move the backrest to the desired position.

2) Move the footrest to the desired position.

3) Let go of the release lever.

3) Let go of the release lever.

Page 52 B500 classic/advanced

03/2011

→ The footrest is adjusted.

Operation

Fig. 27 Contour seat

Fig. 26 Manual elevating footrest

6.10 Additional seat options

The power wheelchair can be equipped with a range of
other seat options.

6.10.1 Contour seat

Compared to the standard seat, the contour seat provides
the user with improved comfort and lateral support.

03/2011

6.10.2 Recaro® seat

WARNING

Incorrect Recaro® Seat settings

Risk of falling, tipping

► Note that the maximum backrest angle is 30° while

standing and 20° while driving.

The power wheelchair can be equipped with various
Recaro® seat models.

They provide individually adjustable, comprehensive seat
ing comfort.

Page 53B500 classic/advanced

180

10

Operation

Folding the backrest forward (reducing the
transportation size)

1) Pull the release lever on the Recaro® seat(see Fig.5,
item 1) up. The release lever is located on the side of
the backrest.

2) Fold the backrest forward.

3) Let go of the release handle.

→ The backrest is folded forward.

Folding the backrest up

► The backrest is folded up, the release lever is securely

engaged.

→ The backrest is folded up.

Removing the headrest

Two persons are required to remove the headrest.

1) 1st person: Find the release points on the Recaro® seat
below the cover (see Fig.28) and push them at the
same time.

2) 2nd person: Pull the headrest up and out.

Fig. 28 Image showing the release points

Removing the Recaro® from the mobility base

1) Pull the release strap located below the seat surface
forward and hold onto it.

2) Release the left and right bolts which lock the seat to
the frame.

3) To release the rear seat clip from the bracket, tip and
push the seat back a bit.

4) Remove the Recaro® seat.

→ The Recaro® has been removed.

Page 54 B500 classic/advanced

03/2011

Operation

Attaching the Recaro® seat to the mobility base

CAUTION

Recaro® seat not locked in place

Risk of tipping

► During installation of the Recaro seat, ensure that the

seat clip is engaged firmly in the clips.

► Ensure that the front locking bolts are engaged up to

the key ring.

1) Set the back edge of the Recaro® seat onto the end of
the seat frame.

2) Push the seat forward until the rear seat clip protrudes
into the bracket.

3) Tip the seat forward until the locking bolts engage with
the seat frame.

→ The Recaro® seat is installed.

Adjusting the Recaro® seat

INFORMATION

To adjust the back angle of the Recaro® seat: see
Page17.

Adjusting the lateral supports in the lumbar region

INFORMATION

This information only applies to the Recaro® LT model.

1) Turn the knob on the side of the backrest forward.

→ Both lateral supports are moved closer together.

2) Turn the knob on the side of the backrest backwards.

→ Both lateral supports are moved apart.

Adjusting the pads

The seat surfaces X and W are equipped with a pull-out
pad at the front of the seat surface. The adjustment lever
for the pad is located below the seat surface.

1) Pull the pad adjustment lever up and hold it there.

2) Move the pad to the desired position.

3) Release the adjustment lever and let it engage.

→ The adjustment lever is in a safe position if it engages

audibly and has returned to its initial position.

03/2011

Page 55B500 classic/advanced

Operation

Adjusting the headrest

The height and tilt of the headrest are adjustable.

6.10.3 Headrest

Otto Bock offers the option of equipping the standard and
contour seats with a headrest.

The bracket for attaching the headrest mounting kit is
attached with an adapter which is mounted to the back
frame.

INFORMATION

See the manufacturer documentation for information on
attaching the mounting kit.

Fig. 29 Headrest with mounting kit

6.11 Control unit accessories

The power wheelchair can be equipped with the following
optional control unit accessories.

6.11.1 Attendant control

The power wheelchair can be equipped with an optional
separate control panel for attendant operation. The separ
ate control panel is height-adjustable and removable.

For the standard and contour seats, the attendant control
is located on the backrest cross tube. For the Recaro®
seat, the attendant control is located on the headrest.

Page 56 B500 classic/advanced

03/2011

Fig. 30 Attaching the attendant control

Functional overview

The attendant uses the attendant control to operate the
driving function and the power seat functions.

The module is connected in conjunction with the control
panel or as an individual input device.

Fig. 31 Attendant control

1 [On/Off] Button 4 [Mode] Button

2 Battery capacity (LED indicat

or)

3 Mode (LED indicator) 6 Joystick

5 Selected power seat function

(LED indicator)

Operation

03/2011

Page 57B500 classic/advanced

Operation

[On/Off] Button

The button is used for switching the power wheelchair on,
for activating the drive-away lock and for switching the
wheelchair off.

Display Information

Attendant control activated

Battery capacity (LED indicator)

The LED lights up when the unit is on.
Colour and flash codes provide information on the current

battery capacity status:

LED Information

Green is lit Battery capacity > 70%
Orange is lit Battery capacity 30%-70%
Red is lit Battery capacity < 30%
Red is flashing Battery deep discharge

Charge as soon as possible

Green is flashing Battery over-voltage (e.g. after driv

ing downhill)

Continue driving slowly

LED Information

Red/Orange/Green
flashing alternately

[Mode] Button

Switch between speed level 1 and 2 by pressing the button
briefly.

Push and hold the button (at least 2 seconds) to switch the
control unit to the power seat functions.

Mode (LED indicator)

The LED indicates the speed level status and system faults
using 3 colour LEDs and various flash codes:

LED Information

Green is lit Speed level 1
Orange is lit Speed level 2
Red – flashing

1x/2x/3x/4x/5x
Off LED display switched to

Selected power seat function (LED indicator)

The power seat functions are accessed by pressing and
holding the "M" button (approx. 2 seconds).

Charging process / drive away
lock

Fault (see Page89)

seat functions

Page 58 B500 classic/advanced

03/2011

Operation

The currently selected seat function is indicated on the con
trol panel display (see Page44 et. seq.) and by the follow
ing LEDs on the attendant control:

Display Information

Power back angle adjustment

Power seat tilt

Power seat height adjustment

Coupled power seat adjustment
(backrest and seat tilt)

Moving the joystick right switches between the different
seat functions. The respective function can be extended or
retracted by moving the joystick forward or back (see
Page44 et. seq.).

The corresponding LEDs flash if an error occurs (see
Page89).

Joystick

The joystick is used for driving. The further it is moved away
from the centre position, the faster the power wheelchair
will drive in this direction.

If the seat functions are accessed with the [Mode] button,
then the joystick is used to select and activate the seat
functions (see Page44 et. seq.).

6.11.2 Push-button module

WARNING

Risk of uncontrolled driving behaviour

Risk of falling, tipping, collision with persons or nearby
objects

► Note that no changes of any kind may be made to the

push-button module by the user. Programming of the
push-button module may only be performed by
trained, authorised personnel.

Power wheelchairs with the enAble50 control unit can be
equipped with an optional push-button module.

The push button module lets the user select additional
power seat functions directly during normal driving opera
tion.

03/2011

Page 59B500 classic/advanced

Operation

Available functions

Depending on the power wheelchair model and program
ming of the push button module, up to 5 power seat func
tions (see Fig.32, item 1) can be controlled during normal
driving operation:

Display Information

Power seat height adjustment

Power seat tilt

Power back angle adjustment

Power footrest left

Display Information

Power footrest right

Power footrests, coupled

Other special functions (combinations)

S1 – S5

Push button functions

■

The [Mode] button (see Fig.32, item 2) is used to
toggle among the different functions (1-2-3-4-5-1-2-…).

■

The blue LED (see Fig.32, item 3) indicates the selec
ted power function.

■

The respective function is activated (function up/down)
using the buttons [Selected function up] / [Selected
function down] (see Fig.32, item 4).

Page 60 B500 classic/advanced

03/2011

INFORMATION

The function of the [Selected function up/down] buttons
can be programmed according to the user's wishes (but
ton [Selected function up] = function up or function down ­depending on programming).

In addition, 3 Buddy-Buttons can be connected to the push
button module and positioned at will (see Page62).

The Buddy Buttons perform the same functions as the
[Mode] button and the [Selected function up] / [Selected
function down] buttons (see Fig.32, items 2/4). Symbols
on the back of the push button module indicate the corres
ponding functions.

Operation

Fig. 32 Push-button module

1 Available power functions

2 [Mode] Button

3 Selected function (LED indicator)

4 [Selected function up/down] Buttons (see information box)

5 Stereo plug for the connection of Buddy buttons

03/2011

Page 61B500 classic/advanced

Operation

6.11.3 Adapter cable for Piko or Buddy button

INFORMATION

For additional information on user specific adjustment of
this function: see front inside cover.

Power wheelchairs with the enAble50 control unit and
push-button module can be equipped with an optional
2-way adapter cable.

■

The respective connected Piko or Buddy button may be
used to control power seat functions as well as other
functions (see inside front cover). These functions are
specified when the power wheelchair is ordered.

■

The Piko and Buddy button switches are programmed
with a so-called toggle function. The selected function
is activated as long as the button is pressed. The
selected function is activated in the opposite direction if
the button is released and pushed again.

■

For example, if the power back angle adjustment is
activated, the backrest tilts back as long as the button
is pressed the first time around. Activating this function
again causes the backrest to tilt forward as long as the
button is pushed.

6.11.4 External odometer

The power wheelchair can be equipped with an external
odometer.

It is connected to the control panel guard.
Additional information on using it can be found in the manu

facturer's instructions for use.

Fig. 33 External odometer

Page 62 B500 classic/advanced

03/2011

6.12 Additional options

6.12.1 Control panel holder

Swing-away control panel holder

Otto Bock offers the option of equipping the power wheel
chair with a removable control panel mounted on a swing­away control panel holder. This control panel holder makes
it possible to drive the power wheelchair under a table or
closer to an object.

The control panel holder can be rotated up to the armrest.

1) Apply slight pressure to push the control panel holder
to the side.

→ The pivot element is unlocked.

2) Swing the control panel holder away to the side.

INFORMATION The pivot element locks in place
again when the holder is rotated back to the original
position.

Operation

Fig. 34 Swing-away control panel holder with removable control

panel

Height-adjustable control panel holder

The power wheelchair can be equipped with a special con
trol panel holder which allows for height adjustment of the
control panel.

1) Loosen the mounting screw.

2) Adjust the height of the control panel holder.

3) Tighten the mounting screw.

03/2011

Page 63B500 classic/advanced

Operation

Fig. 35 Height-adjustable control panel holder

6.12.2 Lights

The power wheelchair can be equipped with a light kit.

Fig. 36 Headlights

6.12.3 Belts / belt systems

Lap belt

The warning flashers, the right and left direction indicators,
and the light are operated via the control panel.

The light kit consists of 2 rear lights with integrated direc
tion indicators and 2 front lights, each consisting of an LED
headlight and a blinker (see Fig.36).

To replace broken lights: see Page80.

Page 64 B500 classic/advanced

03/2011

CAUTION

Insufficient support of the seated person

Risk of falling out of the power wheelchair

► Always wear the safety belt / lap belt when driving in

public.

CAUTION

Putting the lap belt on incorrectly

Risk of pressure points, constriction

► Ensure that the buckle lies in the middle of the body.

► Ensure that the lap belt is not too tight against the

body.

► Remove objects or clothing which get caught.

The power wheelchair can be equipped with a lap belt.
The lap belt provides additional support and keeps the user

from sliding out of the seat.

Putting the lap belt on

> The user sits upright or lies in the power wheelchair.

1) Push the 2 halves together until the buckle engages
with an audible click.

2) Pull to check that it is secure.

→ The belt is put on.

Operation

Fig. 37 Putting the lap belt on

Opening the lap belt

► Press the red release button.

→ The buckle is open and the belt can be removed.

Adjusting the belt length

The belt length can be adjusted on both sides. Excess belt
length is taken up by the plastic slider.

> The user sits upright or lies in the power wheelchair.

1) Close the belt.

2) Position the 2 buckle halves in the middle of the body.

03/2011

Page 65B500 classic/advanced

Operation

3) Position the respective half of the buckle at a right
angle (see Fig.38, item 1).

4) Slide the 2 halves of the closure to the desired position.

5) Release the respective half of the buckle.

→ The belt length is adjusted.

Fig. 38 Adjusting the lap belt

1 Buckle

Four-point belt/chest belt

CAUTION

Insufficient support of the seated person

Risk of falling out of the power wheelchair

► When driving in public areas, always wear the four-

point or chest belt for additional support.

► Under no circumstances may the belt system be used

as part of a restraint system for transportation in a
wheelchair accessible vehicle.

CAUTION

Putting the four point belt on incorrectly

Risk of pressure points, constriction

► Ensure that the bottom belt is not too tight between

the lap belt and the thigh.

► Ensure that the buckle lies in the middle of the body.

► Ensure that the shoulder belt lies against the chest

equally on both sides and is not too tight.

► Remove objects or clothing which get caught.

The power wheelchair may be equipped with a four-point
or chest belt.

Page 66 B500 classic/advanced

03/2011

Operation

The four-point or chest belt makes it possible to secure
patients in the power wheelchair.

Putting the four point/chest belt on

> The user sits upright or lies in the power wheelchair.

1) Close all buckles so that they engage with an audible
click.

2) Pull to check that it is secure.

→ The belt is put on.

Adjusting the belt length

> The user sits upright or lies in the power wheelchair.

1) Close the belt.

2) To lengthen: Turn the length adjustment buckle by 90°
and pull.

3) Turn the buckle back to the original position when the
belt length is correct.

4) To shorten: Pull on the free belt end.

→ The belt length is adjusted.

6.12.4 Suspension (steering casters/drive wheels)

The power wheelchair may be equipped with a suspension
system.

A spring and shock absorber element on each of the two
steering casters increases driver comfort and improves
traction, especially on uneven surfaces.

The suspension effect is improved even more by a drive
wheel suspension.

If the power wheelchair is equipped with a drive wheel sus
pension, then the batteries are stored in a drawer.

Fig. 39 Steering caster suspension

03/2011

Page 67B500 classic/advanced

Operation

→ The bolt at the bottom edge of the front frame extends

and engages with the front fork as soon as the power
wheelchair faces straight ahead (see Fig.41, left).

→ The steering casters are locked. The power wheelchair

drives straight in both forward and reverse.

Disengaging the steering caster lock

► Turn the folding lever to the middle position until it

engages.

→ The lever is in the unlocked position (see Fig.41, right).

Fig. 40 Drive wheel suspension

→ The steering casters are unlocked and can swivel

freely again.

6.12.5 Locking the steering casters

The power wheelchair may be equipped with a steering
caster lock.

These serve to lock the steering casters in the forward dir
ection, so that turning is no longer possible. Having the
power wheelchair drive in a perfectly straight line increases
safety when driving on ramps or using elevators.

Engaging the steering caster lock

► Push the folding lever on the front of the frame to the

side a bit until it disengages from the centre position.

Page 68 B500 classic/advanced

03/2011

Operation

Fig. 41 Steering caster lock, engaged and disengaged

6.12.6 Rear bumper

The power wheelchair may be equipped with a bumper.
The bumper provides increased user protection in case of

a collision.

03/2011

Fig. 42 Rear bumper

6.12.7 Overview of additional options

INFORMATION

You can find these and other optional add-on components
on the order form and in the wheelchair accessories cata
logue.

The power wheelchair may be equipped with additional
options:

■

Curb climbing assist: To overcome curbs and steps
with a maximum height of 100 mm

■

Puncture-proof tires: Solid rubber tires

Page 69B500 classic/advanced

Operation

■ Seating shell adapter: To attach special seating shells;
control panel holder for seating shells also available

■

Armrest accessories: Special adapters for the armrests
in our accessories catalogue

■

Joystick accessories: Tetra fork; STICK S80; softball;
golfball, flexible joystick stem

■

Control panel guard: Metal guard for impact protection

■

Crutch holder

■

Folding rearview mirror

■

Tray

■

Attachable desktop

■

Accessory box, backpack, cellphone pocket

6.13 Disassembly/transport

6.13.1 Safety Instructions

WARNING

Lifting the power wheelchair incorrectly

Risk of falling, tipping, damage to the power wheelchair

► Only use sufficiently large hoisting devices to trans

port the power wheelchair (see the "Technical Data"
chapter for the weight of the power wheelchair).

► Attendants may only lift the power wheelchair by

solidly attached components. Footrests or armrests
may not be used as lifting points.

WARNING

Improper transportation in aircraft

Risk of injury due to fire or explosion, battery damage,
short circuit

► Follow the IATA (International Air Transport Associ

ation) rules when transporting the power wheelchair in
an aircraft. Before checking the power wheelchair as
baggage, the fuse must always be removed and the
battery contacts insulated to protect them against a
short circuit.

► Note that those batteries in particular which may leak

or will not be transported upright must be removed
and packaged so they cannot leak or short circuit.

► For more information please visit the www.iata.org

website. Otto Bock recommends contacting the air
line directly before every flight to obtain information
regarding special transport regulations.

Page 70 B500 classic/advanced

03/2011

CAUTION

Securing the power wheelchair insufficiently during
transport

Risk of pinching, crushing, blows to body parts

► During transportation in vehicles, on lifting platforms

or in lifts, turn the control unit of the power wheelchair
off and lock the brake.

► The power wheelchair must be secured in accord

ance with the regulations for the transport device.

► During transport in another vehicle, the power wheel

chair must be secured sufficiently with cargo straps.
Only attach the cargo straps to the corresponding
transportation eyelets and specified tie-down points.

6.13.2 Reducing the transportation size

1) Flip the footrests up.

2) Remove the side panels.

3) Fold the backrest forward and onto the seat surface.

Operation

Fig. 43 Power wheelchair with reduced transportation size

Folding down the backrest without back angle
adjustment

1) Pull on the backrest release strap.

2) Remove the side panels.

3) Pull the release strap back.

4) Manually fold the backrest forward and onto the seat
surface.

03/2011

Page 71B500 classic/advanced

Operation

Fig. 44 Folding the backrest down

Folding down the backrest with back angle adjustment

Fig. 45 Removing the cross bolt

1 Cross bolt 2 Lever

1) Remove the side panels.

6.13.3 Reducing the transportation size – Recaro® seat

2) Push the lever (see Fig.45, item 2) on the back of the
backrest up and unlock the cross bolt (see Fig.45,
item 1) at the bottom end of the gas compression
spring or actuator.

3) Remove the cross bolt from the bracket.

4) Fold the backrest forward and onto the seat surface.

Page 72 B500 classic/advanced

To remove/install the Recaro® seat on the mobility base
and to fold the backrest down: see Page53.

6.13.4 Preparing for transport

1) Position the power wheelchair in its transport location.

2) Turn the control unit off.

03/2011

Operation

3) Engage the brake.

4) Use the eyebolts and cargo straps to attach the power
wheelchair to the means of transportation.

Fig. 46 Front (left) and rear (right) eyebolts

6.14 Use in a wheelchair accessible vehicle

6.14.1 Safety Instructions

WARNING

Use as a seat in a wheelchair accessible vehicle

Risk of falling out of the power wheelchair, severe injury in
case of accident

► Always use the seats and restraints in the wheelchair

accessible vehicle first. This is the only way to provide
optimal protection for the occupants in case of acci
dent.

► Never transport more than one person in the power

wheelchair.

► Always ensure that the seat tilt mechanism is lowered

when using the power wheelchair in a wheelchair
accessible vehicle.

WARNING

Use of the belt system as a restraint system in a
wheelchair accessible vehicle is forbidden

Risk of falling out of the power wheelchair, severe injury in
case of accident

► Under no circumstances may the belt system be used

as part of a restraint system for transportation in a
wheelchair accessible vehicle.

► Note that the belt system is only intended to help sup

port the user sitting in the power wheelchair.

03/2011

Page 73B500 classic/advanced

Operation

6.14.2 Permitted use

The power wheelchair may be used for transportation in a
wheelchair accessible vehicle, if a suitable restraint system
is used. The safety components (such as lap belts) sold by
Otto Bock only serve to further restrain the person sitting in
the power wheelchair.

For more information on the use of the power wheelchair
for transportation in wheelchair accessible vehicles, please
refer to our brochure "Using your Wheelchair/ Mobility
Base with Seating Shell or Buggy for Transportation in
Wheelchair Accessible Vehicles", article no. 646D158.

6.14.3 Necessary accessories

An anchor kit is required to use the power wheelchair as a
seat in a wheelchair accessible vehicle. This kit is a pre
requisite for the AMF anchor point system. The authorised
personnel which fit the wheelchair can provide more inform
ation.

The weight of the person being transported is limited to

max. 100 kg (220 lbs).

6.15 Care

6.15.1 Safety Instructions

NOTICE

Incorrect cleaning

Risk of damage to the product, especially to the electron
ics

► Water must not come into direct contact with the elec

tronics, motor or battery under any circumstances.

► Never use a water jet or high-pressure cleaning

apparatus to clean the power wheelchair.

► Use a cloth or sponge for cleaning.

► To avoid corrosion, don't use any aggressive cleaning

agents or solvents.

► Check the driving behaviour of the power wheelchair

after cleaning it.

INFORMATION

Piston rods do not require lubrication. They are mainten
ance-free.

Page 74 B500 classic/advanced

03/2011

Maintenance / repair

6.15.2 Cleaning

The power wheelchair must be cleaned regularly, depend
ing on the amount of use and the degree of soiling.

■

Clean the control panel, battery charger, armrest and
trim components with a damp cloth and mild cleaning
solution.

■

Use a dry brush to clean the seat and back upholstery
as well as the seat cushion.

■

Use a damp plastic brush to clean the wheels and
frame.

6.15.3 Disinfection

► Wipe all parts of the wheelchair down with disinfectant.

Important information about disinfecting

■

Water based disinfectants should be used. Observe
the usage information provided by the manufacturer.

■

Prior to disinfection, clean the seat and back uphol
stery, seat cushion, control panel, and armrest.

7 Maintenance / repair

7.1 Safety Instructions

WARNING

Improper maintenance, repair, or adjustment work

Risk of falling, tipping, or incorrect user posture, damage
to the product

► The power wheelchair may only be serviced by

authorised personnel trained by Otto Bock. The func
tionality and operating safety of the power wheelchair
must be verified and a service performed at least 1 x
per year.

► In case of frequent user changes (children and grow

ing youth) or changing clinical pictures, the power
wheelchair should be inspected, adjusted, and ser
viced 1 x every six months.

► Repairs and adjustments to the brake may only be

made by authorised personnel trained by Otto Bock.
Incorrect settings can lead to a loss of braking power.

03/2011

Page 75B500 classic/advanced

Maintenance / repair

NOTICE

Failure to inspect important wheelchair features

Risk of damage to the product

► Check all power seat options for visual damage and

ensure that screw connections are tight at least 1 x
per month.

► Check for proper tire pressure. The correct tire pres

sure is printed on the tire casing and listed in the
"Technical Data" chapter.

7.2 Maintenance

For the components in the maintenance table below, spe
cial attention must be paid to the following points:

■

Functionality

■

Adjustment

■

Damage, deformation

■

Screw connections

Page 76 B500 classic/advanced

03/2011

7.2.1 Maintenance intervals

The functions described below must be checked by the user or an attendant at the specified intervals:

Maintenance / repair

Components Activity Before

every trip

Drive wheels

Caster wheels

Manual elevating
footrest

Padding/belts Proper condition of the padding X

Wheels must rotate freely and without axial run out X
Central nut on the drive shaft tightened X
Check if wheel mounts are seated securely X
Directional stability of the entire power wheelchair X X
Fork seated in the receiver without play X
Wheels must turn freely and without axial runout X
Mounting nut tightened X
Check whether mounting screws are fastened properly XSeat attachment
For Recaro® seat, check seat lock X
Check that the ratchet mechanism works properly and is

seated securely
Check the footplate for damage X
Check that the ratchet mechanism works properly and is

seated securely
Check footplates for damage X
Visual inspection for scratches and oil leaks on the piston

rod

Weekly Monthly

XFootrest

X

X

Page 7703/2011B500 classic/advanced

Maintenance / repair

Components Activity Before

every trip

Seat belts must not be worn XPadding/belts
Check functionality of the belt buckle X

Tires

Batteries Battery charge condition X

Electronics

Caster wheel
damper

Air pressure (printed on the tire sidewall) X
Sufficient tread depth, at least 1 mm X
Check for damage X

Perform a visual inspection for damage XLights
Check that they work X
No fault indications on the control panel X
No faults indicated by the battery charger LEDs X
Check plug connections X
Activate brake lever while control unit is switched on XBrake
Check that the brake function is active when the brake is

engaged
Visual inspection of all moving components, especially

cabling - check for damage
Check whether the screw connections are tight X
Clean and lubricate the whole module X

Mounting screws tightened X

Weekly Monthly

X

XLift seat

Page 78 B500 classic/advanced

03/2011

Maintenance / repair

Components Activity Before

every trip

Armrest and control panel secured XSide panel and

armrest

Gas compression
spring or actuator

Check armrest for damage X
Visual inspection for scratches and oil leaks on the piston

rod

Weekly Monthly

X

03/2011

Page 7903/2011B500 classic/advanced

Maintenance / repair

7.3 Repair

7.3.1 Replacing a defective fuse

The 80A safety fuse is located in the battery drawer (power
wheelchair with drive wheel suspension) or in a battery tray
(power wheelchair without drive wheel suspension).

Opening the battery drawer (in models with drive wheel
suspension)

> The control unit is turned off.

1) Pull up the release bolt.

2) Pull gently on the battery drawer to roll it out to the

Fig. 47 Pulling on the release bolt

rear.

3) Open the clip on the strap.

4) Remove the battery drawer cover.

Opening the battery tray (on models without drive wheel
suspension)

> The control unit is turned off.

1) Lift the seat cushion from the seat plate.

2) Remove the seat plate.

3) Open the clip on the battery tray strap.

4) Remove the battery tray cover.

Page 80 03/2011 B500 classic/advanced

Maintenance / repair

Fig. 48 Opening the strap

Removing the fuse

1) Open the fuse holder cover (see Fig.49, item 1).

2) Pull the fuse out of the spring contacts (see Fig.49,
item 2).

Installing the fuse

1) Remove the fuse from the protective cover.

2) Open the fuse holder cover.

3) Center the fuse on the spring contacts and plug it in.

4) Close the fuse holder cover until you feel it engage.

Fig. 49 Fuse in the fuse housing

1 Fuse housing with cover

2 Fuse plugged in

3 Fuse holder

Closing the battery drawer (in models with drive wheel
suspension)

1) Place the cover on the battery drawer.

03/2011

Page 81B500 classic/advanced

Maintenance / repair

2) Close the strap.

3) Push the drawer under the seat until the release bolt
engages.

INFORMATION As you close the battery drawer,
ensure that the release bolt engages correctly in the

intended notch.

Closing the battery tray (on models without drive wheel
suspension)

1) Place the cover on the battery drawer.

2) Close the strap.

3) Replace the seat plate and push it down tight.

4) Press the seat cushion firmly onto the hook and loop
material on the seat plate.

7.3.2 Replacing a defective bulb

NOTICE

Penetration of moisture

Risk of damage to the light

► During installation, ensure that the plates are seated

accurately in the housing.

► Ensure that the screws are seated tightly against the

plate.

INFORMATION

Lamp housings and lamps can both be ordered from the
specialist dealer.

The front lights have rubberised mounts to protect them
from damage

Fig. 50 Headlights

1 Notch (apply screwdriver here)

2 LED headlight

Page 82 B500 classic/advanced

03/2011

Maintenance / repair

Replacing the front direction indicator bulb

1) Set a small screwdriver into the notch in the direction
indicator housing and flip the cover down (see Fig.50,
item 2).

2) Remove the cover.

3) Turn the defective bulb slightly to unlock it, then remove
it.

4) Grasp the new bulb with a cloth, set it into the socket,
and lock it in place.

5) Set the cover in place, hook it on, and press it down
tightly.

Replacing the LED headlight

The LED headlight is maintenance-free. If repairs are
required, the authorised person who fitted the wheelchair
can help.

Replacing the bulbs in the rear light and rear direction
indicator

1) Loosen and remove the 2 Phillips head screws

2) Remove the plate.

3) Push the bulb slightly to the right.

4) Pull the bulb out to the front along the left of the spring­loaded plates.

5) Install the new bulb.

6) Set the plate in place.

7) Install and tighten the 2 Phillips head screws.

Fig. 51 Replacing the front direction indicator bulb

03/2011

Page 83B500 classic/advanced

Maintenance / repair

Fig. 52 Rear light without cover

7.3.3 Replacing the battery

Batteries may only be replaced by authorised personnel.

7.4 Troubleshooting

CAUTION

Risk of uncontrolled driving behaviour

Risk of falling, tipping, collision with persons or nearby
objects

► If any faults, defects or other hazards that can lead to

personal injury are detected, the power wheelchair
must be taken out of service immediately.

► Contact your authorised specialist dealer if uncon

trolled movement of the power wheelchair occurs due
to a malfunction.

INFORMATION

In the event of communication problems in the control unit
bus system, the system triggers an emergency stop in
order to prevent any uncontrolled functions.

► Note that after every emergency stop, you have to

turn the power wheelchair control unit on again.

► If the driving function is still not available after turning

the control unit on again, activate pushing mode by
releasing the brake.

► Contact a specialist dealer.

Faults are indicated on the LCD display via the "Battery
Capacity" indicator on the control panel or on the attendant
control (if available). The following table shows the individu
al notifications as well as the associated fault sources and
possible causes and measures.

Page 84 B500 classic/advanced

03/2011

If the measures described here do not resolve the faults
completely, contact your specialist dealer. The specialist
dealer is able to read the exact error codes with a hand
held programming device and can perform a targeted sys
tem analysis.

The control unit stores a list of all faults that occur. The
specialist dealer reads this information, for example during
a general overhaul of the power wheelchair. The specialist
dealer uses the saved data to determine future service and
maintenance intervals.

7.4.1 Types of notifications

Warning

A warning indicates a status or malfunction of one or sever
al components of the power wheelchair. The function of
components that have no errors is not restricted.

For example, if the connection between the control unit and
seat motor is faulty, this error will only be indicated if the
user attempts to activate the motor. However, the driving
function is still available.

Fault

A fault impairs one or several functions of the power wheel
chair. The power wheelchair and its functions are not fully
operational until the fault is resolved.

Maintenance / repair

03/2011

Page 85B500 classic/advanced

Maintenance / repair

7.4.2 Wheelchair control unit fault overview

Display Fault/Warning Cause Possible corrective action

Controller temperature warning Overheating due to excess

ive load

Cool down phase

Motor temperature warning Overheating due to excess

ive load

Joystick warning Joystick is not in zero posi

tion when the unit is turned
on

Hand control device fault Defective joystick Contact specialist dealer

Controller fault Defective controller Check all connections

Communication error (alternat
ing flashing signal)

Page 86 03/2011 B500 classic/advanced

Faulty connection between
the hand control device and
controller;

Defective cabling, software
or hardware

Cool down phase

Move the joystick to zero position
before turning the unit on

Contact specialist dealer

Check cabling / plug connections

Contact specialist dealer

Maintenance / repair

Display Fault/Warning Cause Possible corrective action

Battery under voltage Battery deep discharge

Charge as soon as possible

Battery cable malfunctioning
/ faulty connection to the
battery

Battery over voltage Voltage too high (after full

charge and driving downhill)

Back angle adjustment motor
fault

Seat tilt motor fault Faulty cabling or plug con

Seat height adjustment motor
fault

Power footrest motor fault Faulty cabling or plug con

Faulty cabling or plug con
nections

Defective actuator

nections

Defective actuator

Faulty cabling or plug con
nections

Defective actuator

nections

Defective actuator

Check the connection to the battery
(charge the battery if the connec
tion is good)

Continue driving slowly

Check cabling / plug connections

Contact specialist dealer

Check cabling / plug connections

Contact specialist dealer

Check cabling / plug connections

Contact specialist dealer

Check cabling / plug connections

Contact specialist dealer

03/2011

Page 8703/2011B500 classic/advanced

Maintenance / repair

Display Fault/Warning Cause Possible corrective action

Drive motor fault Faulty cabling or plug con

nections

Defective actuator

Check cabling / plug connections

Contact specialist dealer

Brake fault Faulty cabling or plug con

nections

Defective actuator

Emergency stop Faulty cabling or plug con

nections

Defective actuator

Page 88 B500 classic/advanced

03/2011

Check cabling / plug connections

Contact specialist dealer

Check cabling / plug connections

Contact specialist dealer

Maintenance / repair

7.4.3 Attendant control fault overview

Battery LED

LED Fault/Warning Cause Possible corrective action

Red is flashing Battery under voltage Battery deep discharge Charge as soon as possible
Green is flashing Battery over voltage Voltage too high (after full

charge and driving downhill)

Mode LED

LED Fault/Warning Cause Possible corrective action

Red is flashing 1 x Controller fault Defective controller Contact specialist dealer
Red is flashing 2 x Hand control device fault Defective joystick Contact specialist dealer
Red is flashing 3 x Communication error Faulty connection between

the hand control device and
controller

Defective cabling, software
or hardware

Continue driving slowly

Check cabling / plug con
nections

Contact specialist dealer

Red is flashing 4 x Joystick warning Joystick is not in zero posi

tion when the unit is turned
on

Red is flashing 5 x Brake fault Brake release open

Defective brake

03/2011

Move the joystick to zero
position before turning the
unit on

Close brake release

Check brake (e.g. Bowden
cable)

Page 8903/2011B500 classic/advanced

Maintenance / repair

LED Fault/Warning Cause Possible corrective action

Red is flashing 5 x Drive motor fault Faulty cabling or plug con

tacts;

Check cabling / plug con
nections

Defective actuator

Seat function LEDs

LED Fault/Warning Cause Possible corrective action

Backrest LED is flashing Back angle adjustment

motor fault

Seat LED is flashing Seat tilt motor fault Faulty cabling or plug con

2 LED's below the seat sur
face are flashing

Backrest / seat surface LED
is flashing

Seat height adjustment
motor fault

Power seat function temper
ature warning

Faulty cabling or plug con
tacts

Defective actuator

tacts

Defective actuator

Faulty cabling or plug con
tacts

Defective actuator

Overheating due to excess
ive load

Contact specialist dealer

Check cabling / plug con
nections

Contact specialist dealer

Check cabling / plug con
nections

Contact specialist dealer

Check cabling / plug con
nections

Contact specialist dealer

Cool down phase

Page 90 B500 classic/advanced

03/2011

Disposal

8 Disposal

8.1 Safety Instructions

NOTICE

Leaking battery acid

Risk of pollution

► Note that the power wheelchair's wet cell batteries

contain poisonous acid. Battery acid must not get into
the sewers or soil.

► Observe the information printed on the batteries by

the manufacturer.

► Note that the batteries may not be disposed of as

household waste.

8.2 Disposal Information

To dispose of the wheelchair, return it to the specialist
dealer.

Please return defective batteries to your specialist dealer
when buying new ones.

All product components must be disposed of properly in
accordance with national regulations.

9 Legal information

9.1 Service life

Based on market observations and the current state of
technology, the manufacturer has calculated that the
product can be used for a period of 5 years, provided that
it is used properly and that the service and maintenance
instructions are observed. Storage times at the dealer or
with paying parties are not included in this period.

However, we would like to emphasise that the product is
reliable far beyond this defined period of time, provided
that it is cared for and maintained properly.

If the service life is reached, the user or a responsible
attendant should contact the authorised person who fitted
the wheelchair or Otto Bock service (see inside or outside
of rear cover for address).

9.2 Liability

The manufacturer’s warranty applies only if the device has
been used under the conditions and for the purpose
described. The manufacturer recommends that the device
be used and maintained according to the instructions for
use.

Page 9103/2011B500 classic/advanced

Legal information

The manufacturer is not responsible for damages caused
by components and spare parts not approved by the manu
facturer. Repairs must be carried out exclusively by author
ised dealers or by the manufacturer.

9.3 CE Conformity

This device meets the requirements of the 93 / 42 / EEC
guidelines for medical devices. This device has been classi
fied as a class I device according to the classification cri
teria outlined in appendix IX of the guidelines. The declara
tion of conformity was therefore created by Otto Bock with
sole responsibility according to appendix VII of the
guidelines.

9.4 Warranty terms

Further information on the warranty terms can be provided
by the qualified personnel supplying the wheelchair or by
the Otto Bock after-sales service (addresses, see rear
inside cover or rear cover).

Page 92 B500 classic/advanced

03/2011

Appendices

10 Appendices

10.1 Technical data

Dimensions and weights

Seat width 380 – 420 mm or 430 – 480 mm

(15 - 16.5 in or 17 - 18.9 in)

Seat depth 380 – 460 mm or 420 – 500 mm

(15 - 18 in or 16.5 - 19.7)
Seat height 450 – 600 mm (17.7 - 23.6 in)
Armrest height 240 – 360 mm (9.5 - 14.2 in)
Armrest length 260 mm (10.2 in)
Lower leg length 250 – 340 mm or 350 – 440 mm

(9.8 - 13.4 in or 13.8 - 167.3 in)
Back height 450 or 550 mm (17.7 or 21.7 in)
Back angle 9/1/11/21° or 0/10/20/30°
Overall width 645 mm (25.4 in)
Overall height 1030 mm (40.5 in)
Overall length 1080 mm (42.5 in)
Weight when empty* 95 kg (210 lbs)

Dimensions and weights

Shipping weight* see weight when empty*, of which:

Side panel: < 1 kg (2.2 lbs)

Footrest (standard): approx. 1 kg
(2.2 lbs)

Footrest (manual elevating): 1.8 kg
(4 lbs)

Maximum load capa
city:

Turning radius 1550 mm (61 in)
Caster wheel tire

size

Rear wheel tire size

Tire pressure See tire sidewall

* The specified weight varies according to the selected
options and model.

Electrical system

Operating voltage 24 V

140 kg (user weight) (310 lbs)

9’’ – 10’’

14’’

03/2011

Page 93B500 classic/advanced

Appendices

Electrical system

Batteries -

Wet cell

Gel

Lights:

Front direction indic
ator

LED headlight

Rear direction indic
ator

Rear light

Fuse 80 A
Battery charger For more information, see the

2 x 12 V; 60 Ah (C5)

2 x 12 V; 63 Ah (C5)

H21W 12V BAY9s

maintenance-free

C21W; 12 V; SV8.5

C10W; 6 V; SV8.5

included battery charger instruc
tions for use

Control unit

Model

Operating voltage

Max. output current
per motor

Driving data

Speed 6 km/h / 10 km/h (3.7 mph / 6.2

Climbing ability 17 %
Maximum obstacle

height
Range approx. 35 km (22 m)
Operating temperat

ure
Transportation and

storage temperature
range

Corrosion protection

Corrosion protection Coated frame

B500 "classic": enAble40

B500 "advanced": enAble50

24 V DC

75 A

mph)

50 mm (100 mm with curb climbing
assist)

-25 °C to +50 °C (-13 °F to 122
°F)

-40 °C to +65 °C (-40 °F to 149
°F)

Page 94 B500 classic/advanced

03/2011

Kundenservice/Customer Service

Europe Americas Asia/Pacic Other countries

Otto Bock HealthCare
Deutschland GmbH

D–37115 Duderstadt
Tel. [phone]
Fax [phone]
[email protected]

Otto Bock Healthcare
Products GmbH

A–1070 Wien
Tel. [phone]
Fax [phone]
[email protected]

Otto Bock Suisse AG

CH–6036 Dierikon
Tel. [phone]
Fax [phone]
[email protected]

Otto Bock Healthcare plc

GB–Egham, Surrey TW20 0LD
Tel. [phone]
Fax [phone]
[email protected]

Otto Bock France SNC

F–91941 Les Ulis Cedex
Tél. [phone]
Fax [phone]
[email protected]

Otto Bock Italia S.R.L

I–40054 Budrio (BO)
Tel. [phone]
Fax [phone]
[email protected]

Otto Bock Iberica S.A.

E–28760 Tres Cantos (Madrid)
Tel. [phone]
Fax [phone]
[email protected]

Industria Ortopédica
Otto Bock Unip. Lda.

P–1050-161 Lisboa
Tel. [phone]
Fax [phone]
[email protected]

Otto Bock Benelux B.V.

NL–5692 AK-Son en Breugel
Tel. [phone]
Fax [phone]
[email protected]

Otto Bock Scandinavia AB

S–60114 Norrköping
Tel. [phone]
Fax [phone]
[email protected]

OOO Otto Bock Service

RUS–143441 Moscow Region/
Krasnogorskiy Rayon
Tel. [phone]
Fax [phone]
[email protected]

Otto Bock Hungária Kft.

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[email protected]

Otto Bock Polska Sp. z o. o.

PL–61-029 Poznań
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Otto Bock ČR

CZ–33008 Zruč-Senec
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SK–851 01 Bratislava 5
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RO–Chitila 077405
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Fax [phone]
[email protected]

s.r.o.

Otto Bock Bulgaria Ltd.

41 Tzar Boris III- Blvd.
BG–1612 Soa
Tel. + 359 2 80 57 980
Fax + 359 2 80 57 982
[email protected]

Otto Bock Adria D.O.O.

HR-10431 Sveta Nedelja
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Fax [phone]
[email protected]

Otto Bock Adria
Sarajevo D.O.O.

BIH–71000 Sarajevo
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Fax [phone]
[email protected]

Otto Bock Sava d.o.o.

18000 Niš, Republika Srbija
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[email protected]

Otto Bock Ortopedi ve
Rehabilitasyon Tekniği Ltd. Şti.

TR–34387 Mecidiyeköy-İstanbul
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[email protected]

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DZ–Algérie
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Otto Bock Egypt S.A.E.

115, El- Alameen St.
Mohandeseen – Giza · ET–Egypt
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Fax [phone]
[email protected]

Otto Bock Argentina S.A.

RA–1147 Ciudad
Autônoma de Buenos Aires
Tel. + 54 11 4300 0076
[email protected]

Otto Bock do Brasil Ltda.

BR–13051-030
Campinas-São Paulo
Tel. [phone]
Fax [phone]
[email protected]

Otto Bock HealthCare
Canada Ltd.

CA–Canada, Burlington,
Ontario L7L 5N5
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Fax [phone]

[email protected]

Otto Bock HealthCare
Andina Ltda.

Bogotá / Colombia
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[email protected]

Otto Bock de Mexico
S.A. de C.V.

MEX–Guadalajara, Jal. 44210
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Fax [phone]
[email protected]

Otto Bock HealthCare LP

U.S.A.–Minneapolis,
Minnesota 55447
Phone [phone]
Fax [phone]
usa.customerservice@
ottobock.com

Otto Bock Australia Pty. Ltd.

AUS–Baulkham Hills NSW 2153
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Fax [phone]
[email protected]

Beijing Otto Bock Orthopaedic
Industries Co., Ltd.

Beijing 100015 · P.R.China
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Fax [phone]
[email protected]

Otto Bock Asia Pacic Ltd.

Wanchai · Hong Kong
Tel No. [phone]
Fax No. [phone]
[email protected]

Otto Bock HealthCare
India Pvt. Ltd.

IND–Mumbai 400 071
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Fax [phone]
[email protected]

Otto Bock Japan K. K.

J-Tokyo 108-0023
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Fax [phone]
[email protected]

Otto Bock Korea
HealthCare Inc.

ROK-Seoul 135-090
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Fax [phone]
[email protected]

Otto Bock
South East Asia Co. Ltd.

T-Bangkok 10900
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Fax [phone]
[email protected]

Otto Bock HealthCare GmbH

D–37115 Duderstadt
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Fax [phone]
[email protected]

Versandanschrift für Rücksendungen/Adress for Returns:

Otto Bock Manufacturing Königsee GmbH

Lindenstraße 13 · 07426 Königsee/Germany

Hersteller/Manufacturer:

Otto Bock Mobility Solutions GmbH

Lindenstraße 13 · 07426 Königsee/Germany

Phone [phone] · Fax [phone]

[email protected] · www.ottobock.com

Otto Bock has a certified Quality Management System in accordance with ISO 13485.

© Otto Bock · 647G742=EN-02-1103