Otto Bock Discovery User manual

Discovery
Bedienungsanleitung...................................................1
Instructions for Use....................................................19
Instruction for use ......................................................37
Manual de instruções ................................................55
© Otto Bock HealthCare · 647G162 – 01.06 – Printed in Germany

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Instructions for Use for Discovery
Contents Page
1 Preface.....................................................................................................................................................20
2 Intended Use............................................................................................................................................20
3 Declaration of Conformity........................................................................................................................20
4 Service and Repairs .................................................................................................................................20
5 Safety Instructions ...................................................................................................................................21
6 Delivery / Preparing the Mobility Base for Use .......................................................................................23
Exchanging / Shifting the Interface Adapters .........................................................................................23
Seat Depth............................................................................................................................................23
Position of Seat Bars ............................................................................................................................23
Mounting of Seating Systems ................................................................................................................24
7 Static Stability Check...............................................................................................................................25
8 Adjustment and Adaptation Possibilities.................................................................................................25
Seat Tilt.................................................................................................................................................25
Transport...............................................................................................................................................25
Standard Equipment .............................................................................................................................26
9 Accessories..............................................................................................................................................27
Storage Bag .........................................................................................................................................27
Tip-assist...............................................................................................................................................27
Armrests ...............................................................................................................................................27
Footrest Assemblies Mounted to the Seat Tube .....................................................................................28
Footrest Assembly for Seating Shell Interface........................................................................................30
Seating Shell Interface ..........................................................................................................................30
Pushbar with Ratchet Joint ....................................................................................................................30
Anti-tipper .............................................................................................................................................30
Back Guide for Seating Shell Back .......................................................................................................31
Tray.......................................................................................................................................................32
Drum Brake for Attendant......................................................................................................................32
10 Maintenance, Cleaning and Care ............................................................................................................33
11 Terms of Warranty ....................................................................................................................................35
12 Technical Data .........................................................................................................................................36

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1 Preface
Thank you for choosing an Otto Bock HealthCare product. Please read this manual thoroughly to ensure you
get the most out of it.
The 'Accessories' section of this manual describes add-ons available for the Discovery to extend its capabilities
or enhance its comfort.
The 'Delivery / Preparing the Mobility Base for Use' section describes how you can adjust the mobility base for
seating shells to your own requirements.
If you have any further questions, or if you have any problems, please contact your Otto Bock dealer.
The design, as described in these Instructions for Use, is subject to technical alterations without notice.
2 Intended Use
The Discovery mobility base is designed solely for use with seating systems for people who are unable to walk
or those with limited mobility. It can be moved either by the user or by another person.
The Otto Bock warranty applies only when the product is used according to the specied conditions and
for the intended purposes, following all manufacturer's recommendations.
Seating shells and modular seating systems must be used with mobility bases suitable for indoor and/or outdoor
use. Their aim is to provide disabled persons with mobility and for transporting them.
The Discovery mobility base for indoor and outdoor use has been specially developed for the use with
orthopedic seating systems (e.g. seating shells). There are many adjustable settings that allow you to fine tune
the Discovery to meet individual needs.
It must be adjusted to integrate with the seating system you are using by an orthopedic or rehabilitation dealer.
3 Declaration of Conformity
Otto Bock HealthCare GmbH as manufacturer with sole responsibility declares that the Discovery Mobility Base
conforms to the requirements of the European Directive for Medical Products 93 /42 /EEC.
4 Service and Repairs
Service and repairs on the Discovery mobility base may only be carried out by Otto Bock dealers. If you have
any problems, please contact your dealer. Any necessary repairs will be made exclusively with authentic Otto
Bock spare parts there.
For repair and service, the following tools are required:
Allen wrench, sizes: 4 mm and 6 mm
Wrench, sizes: 8 mm, 10 mm, 13 mm, 19 mm and 24 mm
Screwdriver
Torque wrench
Tire levers
Your authorized Otto Bock healthcare dealer is:

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5 Safety Instructions
Please read the Instructions for Use first! Before using the product, you should become familiar with
the handling, function and use of the product.
To avoid potentially dangerous situations such as tipping, you should become familiar with your new
mobility base with seating shell on level ground first.
Do not stand on the footrests when getting into or out of your mobility base with seating shell.
Get to know how the mobility base with seating shell reacts when the center of gravity shifts; for
example on slopes or inclines or when clearing obstacles like steps and curbs. This should be done
only with assistance from another person.
Park the mobility base with seating shell only on level ground. If parking it on a slope is unavoidable,
make sure that you bring the seat to an upright position and that the anti-tipper is in functional posi-
tion.
If the seat is reclined then there is a risk that the mobility base with seating shell could tip over
backwards.
Please note that the seat may only be tilted with the anti-tipper in functional position.
When reaching for objects in front, to the side or behind the mobility base with seating shell, be sure
the seat occupant does not lean too far out of the seating shell as the shift in the center of gravity
might cause the mobility base with seating shell to tilt or tip over.
Treat your mobility base with seating shell with care. Do not "jump" it down from higher surfaces and
do not drive against obstacles (including steps and curbs) without braking.
The anti-tipper is a component that has been designed to prevent the mobility base with seating
shell from tipping over backwards. The anti-tipper should never be used to support the back of the
mobility base with seating shell with the rear wheels removed.
Do not go up or down stairs without assistance from another person. Use ramps or elevators
where they are available. If they are not available then two people should carry the mobility base
with seating shell over the obstacle. If only one helper is available, this person should adjust the
anti-tipper (if mounted) so that it does not contact the steps during transport. This will help avoid
a potential fall. Afterwards, the anti-tipper should be put back in its previous position. When using
lifting platforms with mounted anti-tipper, be certain that the anti-tipper is inside the standing area of
the lifting platform.
When lifting the mobility base, always hold it by firmly attached components, not by lose or moving
parts such as the footrests.
Be sure that the clamping levers of the height adjustable push handles are firmly tightened.
Make sure that the brakes are applied when stationary on uneven ground or when transferring (e.g.
to a car).

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Tire pressures have a big effect on handling. The maneuverability and ease of use of the mobility
base with seating shell are at their best when the rear wheel tires are correctly inflated and when the
pressures are the same in both wheels on each axle.
Before starting to use your mobility base with seating shell, check that the tires are inflated correctly.
The correct air pressure is printed on the sidewall of the tire. Alternatively please refer to the air
pressure table in the 'Technical Data' section of this manual.
Please ensure that the cables for activating the drum brake and for releasing the gas compression
springs are behind the back and that they do not come near the spokes.
Make sure the tires have sufficient tread depth.
We would like to point out that persons seated in seating shells must be secured with suitable safety
systems such as straps or belts at all times.
With some combinations of settings the casters may be able to hit the footrest. If this happens then it
will impair the steering range of your casters and you should change the settings to avoid it.
Please note that when using your mobility base with seating shell in public places or on streets you
must observe the traffic regulations for your area.
Be sure you are visible in the dark. Wear light-colored clothes if possible. We recommend attaching
active lighting as well.
For transfemoral amputee users, use of an anti-tipper is required.
Be careful with your fingers when using the mobility base with seating shell or during adjustment and
assembly works (risk of injuries).
Maximal load capacity including seating shell is 110 kg.
Using your Mobility Base with Seating Shell for Transportation in Motor Vehicles:
We recommend wherever and whenever possible, wheelchair users transfer to the seats installed
in the motor vehicle and use the corresponding vehicle restraint systems, because this is the only
way to ensure optimal protection of the passengers in case of an accident. It is possible, however,
to use your Discovery mobility base with seating shell for transportation in a vehicle for the disabled,
provided that the Otto Bock safety elements as well as appropriate restraint systems are used. For
further information please refer to our brochure 'Using your wheelchair/ mobility base with seating
shell or stroller/ buggy for transportation in motor vehicles', order number 646D158.
Be sure to firmly re-tighten the screws after all adjustments.

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6 Delivery / Preparing the Mobility Base for Use
The original package contains the following components:
• Mobility base for seating shells
• Instructions for Use and tools required
• Accessories as ordered
Carefully remove the transport safety snaps and packaging material.
Figure 1 Figure 2
Exchanging / Shifting the Interface Adapters
At the moment, the following types of interface adapters for seating systems are available:
1 Parallel adaption 5 Dräger
2 Trapezoid adaption 6 Shape/Moss (Fig. 2, item A)
3 Interco 7 Universal crossbars (Fig. 2, item B)
4 R82/Ato Form
Models 1 - 5 After loosening the screw connections (Fig. 1, item A) on the seat bars, the interface adapter
(Fig. 1, item B) can be shifted or exchanged.
Models 6 + 7 Slide the interface adapters (Fig. 2) onto the seat bars and tighten the screws. For this purpose it
is necessary to remove the attachment device for the backrest from the seat bars.
Figure 3 Figure 4
Seat Depth
The seat depth can be set by selecting one of the four seat depth positions (Fig. 3).
To change the depth position, the fixing screws of the attachment device for the backrest (Fig. 3, item A) and the
screws of the gas compression spring attachment (Fig. 3, item B) must be removed on the left and on the right.
Then the attachment device for the backrest can be moved on the seat bar for adjustment.
The back frame doesn't need to be disassembled when setting the seat depth.
Position of Seat Bars
After removing the screw connections to the basic frame (Fig. 4, item A), the seat bars can be shifted by 2.5 cm,
e.g. to provide more space for the footrests or for center of gravity shifting.
After you have nished adjustment, thoroughly re-tighten all screws.
A
B
A
B
A
A
B
A

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Mounting of Seating Systems
When using seating systems of other manufacturers, please observe the corresponding manufacturer’s
instructions for use.
Otto Bock will assume no liability for combinations with interface adapters not listed under 'Exchanging /
Shifting the Interface Adapters'.
Figure 5 Figure 6
Removing and Mounting Seating Systems equipped with the 'Horacek' Seating Shell Interface (Fig. 5)
For transporting the mobility base with seating shell or to divide its weight into two more manageable loads, the
seat can easily be removed from the mobility base. This also allows for easy transfer of the seat between indoor
and outdoor mobility bases.
Position yourself on the side of the seating unit. Hold the head area of the seat back with one hand. Now reach
beneath the seat and pull the disengaging lever towards the seat edge or footrest assembly to release the seat
attachment. Tilt the seat back by over 45° and remove it by lifting upwards.
To remount the seat onto the mobility base, hold the seat as described above and first put the locking unit at an
angle of approx. 45° on the rear tube of the seat adapter. Press the front edge of the seat down onto the mobility
base until the seat audibly snaps in place. Make sure it is secure by giving the seat a few short tugs.
Removing and Mounting Shells using the Trapezoid Adaption (Fig. 6)
For transporting the mobility base with seating shell or to divide its weight into two more manageable loads, the
seat can easily be removed from the mobility base. This also allows for easy transfer of the seat between indoor
and outdoor mobility bases.
Position yourself on the side of the seating unit. Hold the seat with one hand placed on the back. Pull down the
release button (Fig. 3) under the seat.
The locking bolt will unlock and release the adapter. At the same time, push the seating shell forward.
You can then remove the seating shell unit.
To remount the seat on the mobility base, place the posterior part of the seating shell interface on the adapter
attachment and slide the seating shell backwards until the locking bolt audibly clicks back into locking position.
Make sure the seating shell is secure by giving it a few short tugs.

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7 Checking Static Stability before using the Mobility Base with Seating Shell
After mounting a seating system, the stability of the entire product must be checked.
If static stability is less than 10°, the EN 12183 standard stipulates that the user and/or attendant are informed
on this in a clear warning note to allow the user/ attendant to take corresponding precautions for the user's
safety.
8 Adjustment and Adaptation Possibilities
Seat Tilt
Figure 7 Figure 8
Inclined and Upright Position – You can tilt the seat of your mobility base with seating shell by approx. 35° to the
rear (Fig. 8) by pressing the release lever (Fig. 7). This will cancel the blocking provided by the gas compression
spring. When the desired angle is reached, stop pressing the lever.
- Please note, that the seat may only be tilted with the anti-tipper in functional position.
- When using 22" and 24" wheels, the inclination range is restricted (see 'Technical Data').
Figure 9 Figure 10
Transport
Minimizing the Dimensions – If your mobility base for seating shells and the seating shell used are equipped
with an interface adapter system with a quick-release lock, you can make the mobility base with seating shell
more manageable e.g. to stow when traveling by car. First remove the seating system and the footrests from
the mobility base. Pull the locking strap (Fig. 9, item A) and fold the back frame to the front until it rests on the
seat tubes (Fig. 10). When unfolding, make sure that the stud (Fig. 9, item B) engages in the bore hole (Fig. 9,
item C) provided for this. Make sure that the back frame fully engages on both sides when unfolding it.
Safety in motor vehicles - The frame features four fixing eyelets (Fig. 10, item A). If you want to secure the
mobility base with straps, use these attachment points only.
B
A
AA
C

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Standard Equipment
Figure 11 Figure 12
Height Adjustable Pushbar (Fig. 11)
It can be adjusted vertically to a more comfortable height for the person pushing the chair.
To do this, open the clamping levers on the right and left of the back tubes (Fig. 11, item A), move the pushbar
to the desired height and re-tighten the clamping levers until they are snug.
The adjustment range is approx. 20 cm.
Height Adjustable Push Handles (Fig. 12)
They can be adjusted vertically to a more comfortable height for the attendant.
To do this, open the clamping levers on the right and left of the back tubes (Fig. 12, item A), move the push
handles to the desired height and re-tighten the clamping levers until they are snug.
The adjustment range is approx. 20 cm.
Figure 13 Figure 14
Angle Adjustable Back Frame (Fig. 13)
The angle between back frame and seat frame can be adjusted with the ratchet mechanism (Fig. 9). The
inclination range is 90° to 120°. Pulling the strap (Fig. 9, item A) will release the adjustment mechanism and the
back angle can be set.
Make sure that you hear the lock re-engage on both sides after making adjustments.
Attention: Increasing the angle between seat frame and back frame to more than 90° may only be done if
the anti-tipper is in functional position.
Polyurethane Wheels with Wheel Lock (Fig. 14)
The wheel locks serve to lock the wheels. To apply the wheel lock, press the wheel operating lever to the front.
To release the wheel lock, pull the wheel operating lever to the rear.
Check if the wheel locks are operational each time before using the mobility base with seating shell and
re-adjust if necessary (see section 'Maintenance, Cleaning and Care').
A
A

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9 Accessories
The mobility base for seating shells is designed as a modular assembly system, which means that certain
accessories may be used with it. The following options and accessories may make it easier to use your mobility
base with seating shell.
Figure 15 Figure 16
Storage Bag (Fig. 15)
The storage bag is hung into the frame beneath the seat. It is attached with an overlapping tongue and 2 loops
with snap fasteners. The maximal load capacity is 5 kg.
Tip-assist (Fig. 16)
For clearing obstacles like curbs etc. it may be necessary to tip the mobility base with seating shell at the front.
The tip-assist is used to make tipping easier. Step onto the tip-assist with your foot and pull the push handles/
pushbar to the rear.
Figure 17 Figure 18
Armrests
Height Adjustment of the Armrests
To adjust the armrest height, loosen the clamp connection (Fig. 17, item A) and move the armrest to the desired
height. Secure this position using the clamping screw.
Angle Adjustment of the Armrests (optional)
To adjust the angle of the armrest, loosen the screw connection (Fig. 18, item A). Adjust the desired angle and
firmly re-tighten the screw connection.
A
A

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Footrest Assemblies Mounted to the Seat Tube
Figure 19 Figure 20
Components of the Footrest Assemblies
The footrest assemblies consist of the following components:
- Footrest receiver (Fig. 19, item B)
- Footrest holder (Fig. 19, item C)
- Calf band (Fig. 19, item D)
- Footrest bar (Fig. 19, item E)
- Footplate (Fig. 19, item F)
Footrest Receivers
The different footrest assemblies are adjustable in their depth by pushing the footrest receiver more or less
deeply into the the seat tube which features a corresponding adjustment hole channel. For this purpose, loosen
the Allen head screws (Fig. 19, item A) on both sides and move the footrest receiver to the desired position.
Then re-tighten the Allen head screws.
Footrest receivers with ratchet joints allow the footrests to elevate after opening the eccentric lever (Fig. 20,
item A). Choose an angle and lock the footrest by closing the eccentric lever.
Figure 21 Figure 22
Footrest Holder (Fig. 21)
The footrest holder is hung into the footrest receiver.
To remove the footrest, pull the lever to the rear and twist the footrest outwards.
Now you can remove the footrest by pulling it upwards.
Adjusting the Lower Leg Length (Fig. 22)
After loosening the screw (Fig. 22, item A) at the footrest holder, the footrest bar and footplate can be adjusted
to the required lower leg length and for the height of the seating shell you use.
Footrest bars are offered in short and in long version.
When making adjustments, always make sure that the footplate does not contact the caster.
A
A
E
D
BC
F
A

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Figure 23 Figure 24
Calf Band (Fig. 23)
The calf band serves to support the lower legs at calf height to prevent the feet from slipping to the rear off the
footplates. Hook & loop closures allow length adjustment of the calf band.
For removing the footrest, you first have to pull the calf band upward and out of the calf band holder on one
side.
Individual footrests can also be equipped with heel straps.
Individual Footrests, angle adjustable (Fig. 23)
With the individual footrests, angle adjustable, the right and left footplate can be flipped up to make transfers of
the user easier.
Single-panel Footrest, angle adjustable (Fig. 24)
The footplate can be flipped up towards one footrest bar making transfers of the user easier in case the legs are
capable to bear weight.
Figure 25 Figure 26
Adjusting the Angle of the Footplate (Fig. 25)
Angle adjustable footplates are included as standard equipment.
Loosen the Allen head screw (wrench size 5 mm) at the rear footplate suspension by several turns.
Adjust the footplate to the desired position and firmly re-tighten the screw.
Attention – To ensure perfect function of the single-panel footrest, the angle on the hinged side and on the
resting side must be identical.
Locking Device for Single-panel Footrest (Fig. 26)
The locking device prevents inadvertent loosening and flipping-up of the footplate, especially with spastic users.
Pull the bar at the ring (Fig. 26) to flip the footplate up.
After you have finished all adjustments make sure to re-tighten any screws you have undone.

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Figure 27 Figure 28
Footrest Assembly for Seating Shell Interface (Fig. 27)
The footrest assembly is mounted to the seating shell interface. To do this, loosen the Allen head screws at the
seating shell interface (Fig. 27, item A) and move the knee angle to the desired position. Firmly re-tighten the
Allen head screws.
The knee angle can be adjusted using the clamping lever (Fig. 27, item B).
The Allen head screws (Fig. 28, item A) allow adaptation to the lower leg length.
To adjust the angle of the footplate undo the two screw connections (Fig. 28, item B) on the left and right of the
footplate.
When making adjustments, always make sure that the footplate does not contact the caster.
'Horacek' Seating Shell Interface (Fig. 27, item C)
The seating shell interface easily attaches to the 'Horacek' interface adapter by means of the quick-release lock.
The seating shell interface is attached underneath the seating system. For the handling, please refer to section
'Removing and Mounting Seating Systems Equipped with the 'Horacek' Seating Shell Interface'.
Figure 29 Figure 30
Pushbar with Ratchet Joint (Fig. 29)
The pushbar with ratchet joints allows height and angle adjustment of the pushbar to obtain a comfortable posi-
tion for the person pushing the chair..
By loosening the clamping levers (Fig. 29, item A) you can release the pushbar and bring it into the correct
height. To adjust the angle, loosen the clamping levers (Fig. 29, item B).
Be sure to snugly re-tighten the clamping levers (items A and B) after all adjustments.
Anti-tipper, swing-away, for 12" wheels (Fig. 30)
The anti-tipper prevents the mobility base with seating shell from tipping too far backward. The anti-tipper can
be disengaged with slight pressure from above and then swung to the rear into functional position or back to the
front.
B
A
C
AB
A
B
B

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The anti-tipper engages in 2 positions:
1. Rearwards oriented (active setting of the anti-tipper, functional)
2. Approx. 90° position (setting required when using the storage bag or when clearing obstacles or simply when
the anti-tipper is not needed).
Attention:
It is absolutely necessary that the anti-tipper be in functional position when tilting the seating unit to the
rear or when adjusting the angle between seat and back to more than 90°!
Figure 31 Figure 32
Anti-tipper for 22"/24" Wheels
The anti-tipper (Fig. 31) prevents the mobility base with seating shell from tipping too far backward. The anti-
tipper can be disengaged with slight pressure from above and then swung to the rear into functional position or
back to the front.
It is essential for the anti-tipper to be swung into functional position if the seat or backrest is to be tilted
backwards.
After unscrewing the fixing screw, the anti-tipper can be length adjusted in three increments. With increasing
length of the anti-tipper in functional position the possible tilting range decreases.
In functional position, the distance between the anti-tipper wheels and ground must be 5 cm at maximum.
Danger:
Please note that with the anti-tipper swung to the rear, it will be impossible to clear obstacles (e.g.
curbs) from a certain height. To avoid risking an accident, swing the anti-tipper to the front before driving
over such obstacles.
Back Guide for Seating Shells (Fig. 32)
Insert the narrow side of the attachment plate into the slotted hole (Fig. 32, item A), rotate by 180° and tighten
the plate with the wing screw (Fig. 32, item B). The back shell is now attached to the guide plate (Fig. 32,
item C).
When adjusting the back angle, the back guide will move upward or downward correspondingly.
C
C
BA

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Figure 33 Figure 34
Tray (Fig. 33)
The tray can only be used in conjunction with armrests. Make sure that both armrests are at equal height.
Coming from the front, slide the tray onto the armrests.
The user of the seating shell should still have enough space thanks to the cutout.
It is recommended that angle adjustable armrests are used.
Drum Brake for Attendant (Fig. 34)
The drum brake allows the mobility base with seating shell to be braked independently of the tire pressure.
Tighten the brake handles (Fig. 34, item A) to activate the drum brakes.
To lock the brakes, pull the brake handle completely and engage the retaining claw (Fig. 34, item B) with your
index finger. To release the brake, pull the brake handle slightly and the retaining claw will open.
Please note that the brakes must be readjusted if the braking effect is not even.
Check the adjustment of the drum brake from time to time (see section 'Adjustable Brake Force with Rear
Wheel with Drum Brake').
Figure 35 Figure 36
Instead of the 12" rear wheels, 22" or 24" wheels can also be mounted using a special rear axle (Fig. 35). For
this purpose, a hole matrix allows adjustment of the axle height and of the wheelbase in increments of 2.5 cm.
The wheels are provided with quick-release axles (Fig. 36) and can be removed.
Attention when using 22" and 24" wheels (Fig. 35):
In an extreme case, the static stability can change to: 5.9° to the front, 3.9° to the side and 7.2° to the rear.
The drum brakes are designed to function safely as parking brakes on slopes of up to 8°.
Dependent on the wheelbase, the special rear axle for the mounting of large wheels can lead to restrictions of
the seat inclination range. Values for this are listed in the 'Technical Data' section.
In order to reduce the risk of injury, the spokes of the wheels must not be accessible for the user from the inner
side. Please protect the user accordingly by mounting spoke covers (spoke protectors) or by other measures
(side plates on the seating shell).
A
B

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10 Maintenance, Cleaning and Care
The correct function of the mobility base with seating shell should be checked before every use. The checks
listed in the following table must be carried out by the user at the indicated intervals. Failure to carry out these
simple checks may lead to problems arising that could invalidate the warranty.
Check before each use weekly monthly
Function test of the brake/wheel lock X
Secure lock of the seating system X
Firm seat of all wheels X
Firm seat of the push handles / pushbar and
firm seat of the rubber grip covers on the push handles X
Contamination on bearings X
Air pressure (printed on the sidewall of the tire) X
Examination of screw connections X
Visual examination of wearing parts (e.g. tires, bearings) X
Check spoke tension if 22" or 24" wheels are used X
Should any defects become apparent, please contact your authorized dealer. We also recommend that you have
your mobility base with seating shell serviced every twelve months by your authorized dealer.
Figure 37a Figure 37b Figure 38
Adjustable Brake Force with Rear Wheel with Wheel Lock
A reduction of the distance between the wheel lock bolt (Fig. 37b, item A) and the wheel increases the braking
force; a larger distance decreases the braking force. After loosening the screws on the guide plate (Fig. 37a,
item B) you can move the wheel lock and adjust the distance to the tire. The wheel lock should be mounted so
that when the wheel lock is not activated, the distance between the tire and wheel lock bolt is 10 mm maximum
(when using polyurethane tires) or 5 mm maximum (when using pneumatic tires). After finishing the adjustment,
fix the wheel lock by tightening the screws on the guide plate (Fig. 37a, item B).
Adjustable Brake Force with Rear Wheel with Drum Brake
Brake force can be adjusted using the adjustment screw (Fig. 38, item A) to achieve the optimum braking effect.
By unscrewing the screw the brake force will be increased, to decrease it tighten the screw. With the wheel
rotating freely you should loosen the adjustment screw until you hear the noise of the wheel being braked. Next,
screw in the adjustment screw until the friction noise disappears. The wheel should run freely. After finishing the
adjustment, fix the adjustment screw by tightening the counter nut (Fig. 38, item B).
Be sure the brake force (wheel lock / drum brake) of both rear wheels is adjusted equally. Make sure that
the force of the drum brake as parking brake will be sufcient only when the hand brake lever is set to the
second or third ratchet position!
B
A
A
B

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Cleaning and Care
To clean your mobility base, use a mild detergent. Some components of your mobility base need to be serviced
from time to time to ensure smooth operation.
- Hair or dirt particles may accumulate between the caster wheel and fork making it difficult for the caster
wheels to rotate. Remove hair and dirt particles.
- Clean the fork and caster wheel thoroughly using a mild detergent.
- When carrying out mounting work at the drum brakes, please make sure that no oil gets on the brake
linings or on the brake drum.
- If your mobility base gets wet, towel dry it as soon as possible.
- Do not use your mobility base in salt water, and keep sand or other particles from damaging the wheel
bearings.
- Check the tightness of all screw connections regularly. If a screw connection frequently comes loose
then consult your dealer.
Maintenance of Pneumatic Tires
- We recommend that you always carry an air pump and tire repair kit for emergencies. As an alternative,
consider keeping a spray can of hardening foam (available at bicycle shops) to fill your tire in case of
punctures.
- If a tire goes flat, use the appropriate tools to carefully remove the tire from the rim.
- Be sure not to damage the rim and the tube.
- Repair the tube according to the directions in the repair kit, or replace the old tube with a new one.
- Before re-mounting the tire, inspect the inner rim surface and the inside of the tire for any object that may
have caused the flat.
- To ensure that the brakes continue to work correctly please only use the original rear wheels.

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Figure 39 Figure 40
Mounting (Fig. 39)
- Start pressing the underside of the tire over the edge of the rim behind the valve. Pump the tube with a
small amount of air until it is round; then insert it in the tire.
- Check the tube for folds. If folds are present, release some air. You can now mount the rest of the tire
starting with the section of tire opposite the valve by gently pressing the tire toward the valve.
Inating (Fig. 40)
- Check around the tire on both sides to see whether the tube is clamped between the edge of the tire
and the rim. Push the valve back slightly and pull it out again so the tire is well-seated in the valve area.
- Fill the tire with just enough air so that it can still be pressed in easily with your thumb. Be sure the tire
is centered on the rim before continuing. If not, let some air out and realign the tire. Inflate the tire to the
pressure indicated in the air pressure table in section 'Technical Data', and tighten the dust cap.
For many screw connections screws and nuts with thread locks are used.
If you have to open such screw connections replace the respective nut or screw with a new one with new
thread lock.
11 Terms of Warranty
The Otto Bock Warranty applies only when the product is used according to the specified conditions and for the
intended purposes, following all manufacturer’s recommendations (also see our general terms of sales, delivery
and payment).

36
12 Technical Data
Dimensions (cm) and weights (kg) for Discovery
Load capacity (all frame widths) 110 kg
Load capacity of the storage bag 5 kg
Seat tube height 47 cm
Backrest inclination 30°
Push handle height adjustment by
approx.
20 cm
Front wheel diameter 8'
Rear wheel diameter 12" 22" 24"
Smallest height when folded with push
handles or pushbar with ratchet joint 53 cm 56 cm
53 cm without rear wheels
62 cm
53 cm without rear wheels
Smallest height when folded with
pushbar 70 cm 73 cm 70 cm without rear wheels
73 cm
70 cm without rear wheels
Weight (standard model) 35 40 40
Wheelbase
(cm)
48 48 50.5 53 48 50.5 53
Seat tilt 35° 22.5° 35° 35° 17.5 20.5° 35°
A – overall length
(cm)
(without accessories)
75 87.5 90 92.5 90 92.5 95
Frame widths (outer edge of seat bars) 36 cm 40 cm 45 cm
B – overall width 12" wheels 55 cm 59 cm 64 cm
Overall width 22"/ 24" wheels 57 cm 61 cm 66 cm
Distance of armrests
without spacers / with spacers 37 cm / 42 cm 42 cm / 47cm 47 cm / 52 cm
Turning radius
To calculate the turning radius when turning around a braked rear
wheel you can use the following simplified formula.
W = B + √(A²+B²)
A = overall length, B = overall width, W = turning radius
Example:
Discovery with frame width 36 cm and 12" wheels.
A = 75 cm, B = 55 cm turning radius = 146 cm
Air Pressure Table
The rear wheel sizes are printed on the sidewalls of the tires.
Wheel Diameter Pressure
Front wheel 8" 2.5 bar
Rear wheel 12" 2.5 bar
Rear wheel 22" 4.5 bar
Rear wheel 24" 6 bar
Attention: Accessories and add-on components will reduce the remaining load capacity for the user.

Hersteller/Manufacturer:
Otto Bock HealthCare GmbH
Max-Näder-Straße 15 · 37115 Duderstadt/Germanny
National: Telefon [phone]/1462/1463 · Fax [phone]
International: Phone [phone]/3663 · Fax [phone]
e-mail: [email protected] · Internet: http://www.ottobock.com
Versandanschrift für Rücksendungen/Address for Returns:
Otto Bock HealthCare GmbH
Sälzerstraße 16 · D-56235 Ransbach-Baumbach
Otto Bock HealthCare GmbH has been certied by the German Society for the Certication of Quality Assurance Systems (DQS)
in accordance with DIN EN ISO 9001 standard, reg. no. 779 (management system)