Otto Bock Discovery tmax User manual

discovery tmax
Instructions for use (qualified personnel) ................................................................. 3

2 | Ottobock discovery tmax

Foreword1 5..............................................................................................................................................................
Application2 5...........................................................................................................................................................
Intended Use2.1 5.......................................................................................................................................
Indications2.2 5...........................................................................................................................................
Contraindications2.3 5.................................................................................................................................
Required Qualifications2.4 5.........................................................................................................................
Safety3 6....................................................................................................................................................................
Explanation of Warning Symbols3.1 6.............................................................................................................
General Safety Instructions3.2 6....................................................................................................................
Safety instructions for assembly3.3 7..............................................................................................................
Name Plate3.4 7..........................................................................................................................................
Delivery4 7.................................................................................................................................................................
Scope of Delivery4.1 7..................................................................................................................................
Options4.2 8...............................................................................................................................................
Storage4.3 8...............................................................................................................................................
Preparation for Use5 8............................................................................................................................................
Tools required5.1 8......................................................................................................................................
Assembly5.2 8.............................................................................................................................................
Adjustments6 9.........................................................................................................................................................
Prerequisites6.1 9........................................................................................................................................
Settings during Preassembly6.1.1 10................................................................................................................
Adjusting the Seat Width6.2 10.....................................................................................................................
Adjusting the Width of the Main Frame6.2.1 10..................................................................................................
Adjusting the Width of the Seat Frame6.2.2 11...................................................................................................
Adjusting the Seat Depth6.3 11.....................................................................................................................
Adjusting the Back Angle6.4 12.....................................................................................................................
Adjusting the Tilt Limiter6.5 13.......................................................................................................................
Adaptation of the Seating Shell/Seating System6.6 13......................................................................................
Installing an Ottobock Shape System (Option)6.6.1 13.......................................................................................
Removing/Installing a Seat Plate (Option)6.6.2 13..............................................................................................
Installing Adapters for Further Seating Systems6.6.3 14......................................................................................
Installing Ottobock Back Systems (Option)6.6.4 14............................................................................................
Installing other Seating Systems/Back Systems6.6.5 14......................................................................................
Adjusting the Seat Height6.7 14.....................................................................................................................
Adjusting the Locking Pedal6.8 15.................................................................................................................
Adjusting the Footrests/Footplates6.9 16........................................................................................................
Adjusting the Depth of the Footrest 6.9.1 16......................................................................................................
Adjusting the Lower Leg Length6.9.2 17...........................................................................................................
Adjusting the Footplate Angle6.9.3 18...............................................................................................................
Checking/Adjusting the Seating Centre of Gravity6.10 20...................................................................................
Adjusting the Side Panels6.11 21....................................................................................................................
Adjusting the Armrest Depth6.11.1 21.................................................................................................................
Adjusting the Armrest Height6.11.2 21................................................................................................................
Adjusting a Channel Forearm Pad with Swivel Unit6.11.3 21.................................................................................
Adjusting the Wheel Adapters6.12 22..............................................................................................................
Adjusting the Brakes6.13 23...........................................................................................................................
Adjusting the Knee Lever Wheel Lock6.13.1 23...................................................................................................
Adjusting the Braking Force of the Drum Brake6.13.2 24......................................................................................
Adjusting the Tip Assist6.14 25........................................................................................................................
Adjusting the Anti-Tipper6.15 25......................................................................................................................
Positioning Anti-Slip Mats6.16 26....................................................................................................................
Handover7 26............................................................................................................................................................
Final Inspection7.1 26..................................................................................................................................
Table of contents
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Table of contents

Transport to the customer7.2 26....................................................................................................................
Delivery7.3 27.............................................................................................................................................
Maintenance/Repair8 27.........................................................................................................................................
Disposal9 27.............................................................................................................................................................
Disposal information9.1 27............................................................................................................................
Information on Re-Use (Not for US/Canada!)9.2 27.........................................................................................
Legal Information10 27..............................................................................................................................................
Liability10.1 27..............................................................................................................................................
CE Conformity10.2 27....................................................................................................................................
Warranty10.3 27............................................................................................................................................
Trademarks10.4 28........................................................................................................................................
Appendices11 29........................................................................................................................................................
Technical Data11.1 29....................................................................................................................................
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Table of contents

1 Foreword
INFORMATION
Last update: 2015-03-18
►Please read this document carefully before using the product.
►Follow the safety instructions to avoid injuries and damage to the product.
►Instruct the user in the proper and safe use of the product.
►Please keep this document in a safe place.
INFORMATION
►You can request this document as a PDF file from the Customer Care Center (CCC) at [email protected] or
from the manufacturer's service department (see inside back cover or back page for addresses).
►It is possible to increase the display size of the PDF document.
Initial adjustments to the product were made according to the order form. Nevertheless, fine adjustment may be
required and settings may have to be made according to the medical conditions or the user's requirements.
These instructions for use provide the information necessary for adjusting the settings. This work should be closely
coordinated with the user.
Please note the following:
• The instructions for use (qualified personnel) are intended only for qualified personnel and remain with them.
• The operation of the product and functionality of the options are described in the instructions for use (user).
These instructions for use must be given to the user.
• Children and youths must be instructed in the use of the product by you or an attendant using the instructions
for use (user).
• The manufacturer recommends checking the product settings regularly in order to assure an optimum fit over
the long term. A review is required every six months for children and youths in particular.
• The installation and retrofitting of all optional components are generally described in the service manual.
2 Application
2.1 Intended Use
The wheelchair is intended exclusively for the adaptation of seating shells and other orthopaedic seating systems
for people who are unable to walk or have walking impediments. It can be operated either by the user or by an
attendant.
The product can be used indoors and outdoors. In order to provide an optimised, individual fitting, it is adjustable
and/or adaptable.
The product may only be used with the options which are listed in the product order form.
The Otto Bock warranty applies only when the product is used according to the specified conditions and for the
intended purposes.
2.2 Indications
This wheelchair is suitable for fittings for users in all age groups.
The use of various orthopaedic seating systems (e.g. seating shells) and the variety of adjustment possibilities
make the wheelchair suitable for use in case of inability to walk/walking impediments, e.g. due to:
• Paralysis (paraplegia/tetraplegia)
• Loss of limbs (leg amputation)
• Limb defect/deformity
• Joint contractures/defects
• Neurological and muscular diseases
2.3 Contraindications
None.
2.4 Required Qualifications
The adjustment tasks described below are necessary for optimum adaptation to the respective seating system, and
may only be completed by qualified, qualified personnel (orthopaedic authorised personnel, specialist dealers for
rehabilitation products).
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Foreword

3 Safety
3.1 Explanation of Warning Symbols
WARNING Warnings regarding possible risks of severe accident or injury.
CAUTION Warnings regarding possible risks of accident or injury.
NOTICE Warnings regarding possible technical damage.
3.2 General Safety Instructions
WARNING
Incorrect settings
Risk of falling, tipping over or improper user posture
►Adjustments may be carried out only by qualified personnel.
►Only the settings described in these instructions for use may be carried out.
►Settings may only be changed within the allowable adjustment ranges; otherwise, the stability of the product
may be impaired (see this chapter and the chapter "Appendixes"). If you have questions, contact the manu
facturer's service (see back cover for addresses).
►Only conduct tests in the presence of an assistant.
►Unless expressly described, you should not change any settings with a person sitting in the product.
►Secure the user against falling out during all tests.
►Activate the anti-tipper during all tests.
►Before testing setting changes with the user seated, firmly tighten all screw connections.
►Check for safe function before delivering the product.
WARNING
Lack of instruction
Risk of falling, tipping over
►Instruct the user in the proper use of the product when handing it over.
►We recommend the preparation of an acceptance protocol.
CAUTION
Wearing of unsuitable work clothing
Chemical burns due to insufficient protection
►Wear suitable work clothing (for example, gloves and protective eyewear) when working on the batteries.
CAUTION
Use of unsuitable tools
Pinching, crushing or damaging the product
►When working, use only tools that are suitable for the conditions at the workplace and whose proper use
ensures safety and health protection.
NOTICE
Tipping or falling of the product
Damage to the product
►When you work on the product, secure it so that it cannot tip over or fall over.
►Use a clamping device to secure the product for all work at a workbench.
NOTICE
Use of unsuitable packaging
Damage caused by transport in the wrong packaging
►Use only the original packaging for delivery of the product.
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Safety
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3.3 Safety instructions for assembly
CAUTION
Unsecured screw connections
Risk of pinching, crushing, tipping over, falling of user
►After all adjusting/readjusting work, retighten the mounting screws/nuts firmly. Observe any torque settings
which may be specified.
►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).
CAUTION
Improper use of self-locking nuts
Risk of the user falling or tipping over
►Always replace self-locking nuts with new self-locking nuts after disassembly.
CAUTION
Improper assembly of the removable wheels
Risk of the user falling or tipping over
►After each assembly, verify the proper fit of the removable wheels. The quick-release axles must be firmly
locked in the wheel attachment.
3.4 Name Plate
Label Meaning
AType designation
BManufacturer's article number
CMaximum load capacity (see section "Technical Data")
DManufacturer information/address/country
ESerial number
FEuropean Article Number/Global Trade Item Number
GRead the instructions for use before using the product.
The name plate is located on the front con
necting tube of the base frame. HCE marking – product safety according to EU guidelines
Seat angle setting indicator °
(Only in case of anchor point system installation)
Mounting point/anchor point system for attaching the product
in a wheelchair accessible vehicle
4 Delivery
4.1 Scope of Delivery
The product is delivered pre-assembled, with the rear wheels removed (in case of the plug-on version) and packed
in a crate.
The scope of delivery includes:
• Pre-assembled wheelchair
• 2 rear wheels (screwed or plug-on)
• Footrests
• Options as ordered
• Instructions for Use (Qualified Personnel)/Instructions for Use (User)
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Delivery

INFORMATION
Only provide the Instructions for Use (User) to the user.
• Separate safety instructions (only for US/Canada)
Seating shells/seat cushions are not included in the scope of delivery and must be ordered separately.
4.2 Options
The functionality and operation of the options are described in more detail in the instructions for use (user).
All of the available options/accessories are listed on the order form.
4.3 Storage
The wheelchair must be stored in a dry place.
For transportation and storage, an ambient temperature between -10 °C and +40 °C must be maintained.
During extended storage, the knee lever wheel lock on wheelchairs with PU tyres must be released since tyre
deformation may otherwise result.
Note regarding the tyres
• Tires contain chemical substances that can react with other chemical substances (such as cleaning agents,
acids, etc.).
• Direct exposure to sunlight or UV radiation causes the tyres to age more quickly. As a result, the tread surface
hardens and corner pieces break out of the tread.
• Avoid unnecessary parking outdoors. The tyres should be replaced every 2 years regardless of wear and tear.
5 Preparation for Use
5.1 Tools required
The following tools are required for fine adjustments/settings:
• Allen keys in sizes 3 – 5
• Ring and open-ended wrenches in sizes 10, 19 and 24
• Socket wrenches in sizes 10 and 19
• Phillips screwdriver, size 2
• Flat screwdriver, size 3
• Torque wrench (measurement range 5-50 Nm)
5.2 Assembly
CAUTION
Loss of stability due to additional objects on the product
Tipping, falling from the seating shell/seating system, breakage of load-bearing components
►Do not attach additional objects to the frame, cross tubes or seat.
CAUTION
Breakage of load-bearing components due to overloading
Falling, tipping, injuries due to frame breakage
►Do not exceed the maximum load capacity (see chapter "Technical Data").
CAUTION
Improper assembly of the removable wheels
Risk of the user falling or tipping over
►After each assembly, verify the proper fit of the removable wheels. The quick-release axles must be firmly
locked in the wheel attachment.
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Preparation for Use
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CAUTION
Incorrect air pressure
Risk of falling, uncontrolled driving characteristics, tyre rupture
►Maintain sufficient air pressure. Do not exceed the maximum specifications when filling the tyres (see the
chapter "Technical Data").
►Do not use the wheelchair with over/under-inflated or unequally inflated tyres.
►Note that a single tyre with low air pressure can lead to uncontrolled driving characteristics.
►Note that low rear tyre pressure can reduce the braking force of the knee lever wheel lock.
INFORMATION
In general, only metric screws are used on the product.
Exception: axle mounting of the 12" rear wheels (1/2" hexagon head screw + hexagon nut)
INFORMATION
With the combination of Allen head screw/hexagon nut, a higher torque can be transmitted using the hexagon nut
than the Allen head screw.
Please note that the Allen head screw is only intended to be held in place so it does not turn when tighten
ing/loosening the hexagon nut.
1) For plug-on rear wheels: slide the rear wheels onto the wheel attachments of the wheel adapters. The quick-
release axles must not be removable after releasing the pushbutton.
2) Slide the footrests into the holders on the front frame tube.
3) Fold the footplates down. If necessary, insert the calf band and adjust it.
4) Prior to the adaptation of the seating shell/seating system, further wheelchair settings must be adjusted as
required (see Page9 et. seq.).
6 Adjustments
6.1 Prerequisites
WARNING
Incorrect settings
Risk of falling, tipping over or improper user posture
►Adjustments may be carried out only by qualified personnel.
►Only the settings described in these instructions for use may be carried out.
►Settings may only be changed within the allowable adjustment ranges; otherwise, the stability of the product
may be impaired (see this chapter and the chapter "Appendixes"). If you have questions, contact the manu
facturer's service (see back cover for addresses).
►Only conduct tests in the presence of an assistant.
►Unless expressly described, you should not change any settings with a person sitting in the product.
►Secure the user against falling out during all tests.
►Activate the anti-tipper during all tests.
►Before testing setting changes with the user seated, firmly tighten all screw connections.
►Check for safe function before delivering the product.
WARNING
Failure to verify tipping resistance
Risk of the user falling or tipping over
►Changing the settings can lead to instability of the system as a whole. Verify tipping resistance after any
changes to the settings.
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Adjustments

CAUTION
Unsecured screw connections
Risk of pinching, crushing, tipping over, falling of user
►After all adjusting/readjusting work, retighten the mounting screws/nuts firmly. Observe any torque settings
which may be specified.
►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).
CAUTION
Improper use of self-locking nuts
Risk of the user falling or tipping over
►Always replace self-locking nuts with new self-locking nuts after disassembly.
Fine adjustments and setting changes to match the concrete physical and mental condition of the user should
always be made in the user's presence.
All parts of the product should be cleaned thoroughly before adjustments are made.
6.1.1 Settings during Preassembly
If the seating shell/seating system as well as the back system have already been preassembled, the following
chapters can be omitted:
• Chapter "Adjusting the Seat Width" (see Page10)
• Chapter "Adjusting the Seat Depth" (see Page11)
• Chapter "Adjusting the Back Angle" (see Page12)
• Chapter "Adaptation of the Seating Shell/Seating System" (see Page13)
6.2 Adjusting the Seat Width
6.2.1 Adjusting the Width of the Main Frame
Within the allowable adjustment range, the width of the main frame can be adapted to the width of the chosen seat
ing shell or seating system:
1) Remove the seat frame from the main frame (see Page14).
2) Loosen 4 x Allen head screws on each of the adjustment tubes at the rear (see fig.1, item 1) and front (see
fig.2, item 2).
3) Adapt the width on the adjustment tubes, preferably making it symmetrical.
INFORMATION: The connection between the adjustment tube and frame always has to be realised on
both sides with 2 Allen head screws (use inner 2 bores).
INFORMATION: If required, an asymmetry of 12.5 mm (1/2") is allowable when adapting the adjust
ment tubes. The asymmetry must be on the same side on all adjustment tubes. However, the allow
able adjustment range must not be exceeded.
Firmly retighten all Allen head screws to a torque of 10 Nm.
4) Mount the seat frame on the main frame (see Page14).
1 2
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Adjustments
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6.2.2 Adjusting the Width of the Seat Frame
INFORMATION
►Before adjusting the seat frame, the main frame needs to be adjusted (see the preceding chapter).
►In case of a seating shell/seating system preinstalled at the factory, these settings do not have to be changed.
The width of the seat frame can be adapted to the width of the chosen seating shell or seating system.
1) When using a seat plate: remove the seat plate (see Page13).
2) Remove the seat frame from the main frame (see Page14).
3) Loosen 4 x Allen head screws on each of the connecting tubes at the front (see fig.3, item 1) and rear (see
fig.3, item 2).
4) Loosen 2 x Allen head screws with counter nuts on the connecting tube of the central seat fork (see fig.3, item
3).
5) Loosen 2 x Allen head screws with counter nuts on the locking bar (see fig.3, item 4).
6) With push bar option: loosen 2 x Allen head screws on the connecting tube (see fig.4, item 5).
7) Adjust the width on all connecting tubes, preferably making it symmetrical.
INFORMATION: If required, an asymmetry of 12.5 mm (1/2") is allowable when adapting the connect
ing tubes. The asymmetry must be on the same side on all connecting tubes. However, the allowable
adjustment range must not be exceeded.
When using a seat plate: reinstall the seat plate (see Page13).
8) INFORMATION: Check the position of the wheels. Before finally tightening the Allen head screws,
ensure that all four wheels touch the ground on an even surface.
9) Tighten all Allen head screws to the following torque values:
→Item 1/2/3: 10 Nm
→Item 4: Allen head screws – 3 Nm; counter nut – 4 Nm
→Item 5: 8 Nm
►Mount the seat frame on the main frame (see Page14).
3 4
6.3 Adjusting the Seat Depth
The seat depth can be changed by vertically adjusting the back tubes on the seat frame.
1) When using a seat plate: remove the seat plate (see Page13).
2) Loosen 2 x Allen head screws on the back plate/seat frame connection on both sides (see fig.5, item 1) and
remove the rear connecting tube (see fig.6, item 1).
3) If a lashing point is installed, also loosen the 1 x Allen head screw /1 x pin (see fig.5, item 2/3).
4) Adjust the seat depth: slide the back plates to the desired depth position (see fig.6, item 2).
INFORMATION: Ensure that the angle position is not changed (use the same bore). After adjusting the
back plate, reinstall the rear connecting tube.
5) When using a seat plate: reinstall the seat plate (see Page13).
6) Tighten all Allen head screws to 10 Nm.
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5 6
6.4 Adjusting the Back Angle
CAUTION
Unallowable back angle
Risk of the user falling or tipping over
►A back angle setting greater than 30° is not permitted.
INFORMATION
►Ensure the angle setting is symmetrical on both sides of the back frame.
►Note that the seating position may have to be readjusted for an optimum seating centre of gravity.
►Use the specifications for the basic settings of the back angle in the section "Technical Data".
The back angle can be adjusted from -5° to +30° off the vertical position.
+30° -5°
7
a) Angle adjustment in 10° increments
1) Loosen the upper Allen head screw on the back plate (see fig.8, item 1).
2) Loosen and remove the angle adjustment screw on the back plate (see fig.8, item 2).
3) Adjust the backrest to the desired angle with the help of the existing bores.
4) Tighten all Allen head screws to 10 Nm.
5) Proceed the same way on the other side.
b) Setting 5° interim angles
1) Loosen the front Allen head screw (see fig.9, item 1).
2) Loosen and remove the rear Allen head screw (see fig.9, item 2).
3) With installed lashing point: loosen 1 x Allen head screw/1 x anchor point (see fig.9, item 3).
4) Adjust the backrest angle by 5°. Use the available bore for this purpose.
5) Tighten all Allen head screws to 10 Nm.
6) Proceed the same way on the other side.
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8
5°
9
6.5 Adjusting the Tilt Limiter
The adjustable seat angle can be limited if needed. With the tilt limiter installed, the maximum possible seat angle
is 45°.
1) Firmly screw the tilt limiter in place in the hole channel, 5° above the desired maximum angle (see fig.10,
example for maximum tilt angle = 27.5°).
2) Carry out a function test. After reaching the maximum angle (the tilt limiter hits the locking plate guide), tilt the
seat back sightly so that the locking pins engage properly (see fig.11).
CAUTION! Listen for the sound it makes when it engages. If necessary, move the push handles or
push bar up and down slightly in order to align the locking mechanism so that the locking pins on
both sides can engage in the bore holes exactly.
10 11
6.6 Adaptation of the Seating Shell/Seating System
6.6.1 Installing an Ottobock Shape System (Option)
This option may only be installed by Ottobock at this time.
6.6.2 Removing/Installing a Seat Plate (Option)
INFORMATION
The preinstalled seat plate can continue to be used within the approved adjustment range.
For removal/installation within the scope of adjustments or retrofitting a new seat plate, complete the following
steps:
a) Removal/installation to adjust the width of the seat frame
1) Loosen all mounting screws (countersunk head screws) between the seat plate and seat plate supports (see
fig.12, item 1).
2) After adjusting the frame width, (see Page11) position the seat plate:
→The front of the seat plate is flush with the front of the lateral tubes of the seat frame (see fig.12, item 2).
→The seat plate is centred between the lateral tubes of the seat frame.
3) Tighten all mounting screws to a torque of 10 Nm.
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b) Removal/installation to adjust the seating centre of gravity
To adjust the seating centre of gravity (see Page20), it may be necessary to shift the seat plate supports if they
impede the adjustment of the seating centre of gravity on the seat adapter.
1) Loosen all mounting screws (countersunk head screws) between the seat plate and seat plate supports (see
fig.12, item 1).
2) Loosen the clamping screws on the seat plate supports (see fig.13, item 1).
3) Slide the seat plate supports to the desired position. Ensure that the seat plate supports are distributed as
evenly as possible on the cross tubes.
4) Tighten all clamping screws of the seat plate supports to a torque of 10 Nm.
5) Tighten all seat plate mounting screws to a torque of 10 Nm.
12 13
6.6.3 Installing Adapters for Further Seating Systems
It is possible to install a trapezoid adapter. The 647G735 Service Manual contains more information on this.
An adapter for a Leckey KIT or Leckey Mygo seating system may only be installed by Ottobock at this time.
6.6.4 Installing Ottobock Back Systems (Option)
It is possible to install the back systems "The Back" and "Backster". The instructions for use that accompany the
back systems contain more information on this.
6.6.5 Installing other Seating Systems/Back Systems
In principle, it is possible to install third-party seating systems/back systems on the product. In this case, liability
rests with the qualified personnel that completed the installation.
Installation by Ottobock Custom Fabrication is possible with a separate order.
The manufacturer assumes no liability for combinations with seating systems that have not been approved by the
manufacturer (Liability).
6.7 Adjusting the Seat Height
CAUTION
Installation without an assistant
Pinching on components, damage to the seat
►Always get help from an assistant to adjust the seat height.
The seat height can be modified/adapted if necessary – e.g. to obtain more ground clearance for the footplates
because of long lower legs.
1) Remove the locking mechanism linkage (see Page15).
2) Loosen 2 x Allen head screws on both sides between the seat frame and main frame (see fig.14, item 1). Have
the assistant hold the seat during this process.
3) Select the new seat height. Move the seat up or down in the adapter tube in order to do so.
INFORMATION: Note the allowable seat height settings (see the chapter "Technical Data"). Please
note that excessive seat height can lead to overall system instability with large/heavy seating shells.
4) Firmly retighten all Allen head screws to a torque of 10 Nm.
5) Adjust/install the locking mechanism linkage (see Page15).
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14
6.8 Adjusting the Locking Pedal
CAUTION
Incorrect setting of the locking mechanism linkage
Falling from the seating shell, malfunction, damage to/destruction of the release mechanism
►Adjust the length of the locking mechanism linkage so that the locking pins fully engage in the locking plate in
the seat frame and the locking mechanism is in the front position. Only then is the support of the seat assured
with extreme settings or when driving over rough surfaces.
►Secure the screw connections of the locking mechanism linkage so it is free of tension, without pulling or
pushing.
Changing the seat height (see Page14) or the positions of the wheel adapters (see Page22) requires changing
the length of the locking mechanism linkage.
1) Loosen 2 x Allen head screws on the locking mechanism linkage (see fig.15, item 1).
2) Change the seat height or the position of the wheel adapters.
3) Prior to assembly, determine the correct length of the locking mechanism linkage:
→The locking pedal must be in the neutral position (see fig.15: pedal is up against the stop at the top).
→The locking pins must be fully extended (see fig.16, item 1).
→The locking mechanism must be in the forward position (neutral position).
4) Secure the screw connections of the locking mechanism linkage so it is free of tension (without pushing or
pulling, straight in one plane). Use suitable slotted holes in order to do so.
5) Tighten the Allen head screws to a torque of 8 Nm.
Testing the locking mechanism
Carry out a functional test after assembly is complete. Note the following:
• The locking pins must fully engage in the locking plate. Reference point: the locking pins protrude slightly from
the locking plate (see fig.16, item 1).
• It must be possible to depress the locking pedal to the stop without a lot of force. The mechanism unlocks
completely in this process. Reference point: the locking pins are recessed 1–2mm in the plastic locking
mechanism housing.
15 16
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6.9 Adjusting the Footrests/Footplates
CAUTION
Improper footrest/footplate settings
Risk of falling, tipping over
►After changing the footrest/footplate settings, verify that the footrests/footplates do not collide with the caster
wheels at any of the seat tilt settings (seat inclination). The minimum distance between the footrest/footplate
and the caster wheel should be 25 mm.
►Note that with certain footplate settings, the footplate can collide with the caster wheels.
The footplates are the supporting surfaces for the feet.
Their distance from the seat bottom influences sitting stability. The height adjustment acts on the pelvis and ischial
bones. The angle of the footplate should permit a comfortable ankle position.
6.9.1 Adjusting the Depth of the Footrest
Adjusting the Depth of the Footrest Adapter
The depth of all footrests (except the centre footrest and the single-panel footplate ‒ see below for these) can be
adjusted by changing the depth of the footrest adapters in the hole channel of the seat frame members:
1) Loosen the Allen head screws on the seat frame (see fig.17, item1).
2) Remove the lashing point if applicable.
3) Slide the footrest adapters to the desired position (see fig.17, item 2).
INFORMATION: Note the minimum insertion depth. The footrest adapter needs to be secured with 2
screws.
4) Tighten all Allen head screws to a torque of 10 Nm.
Adjusting the Depth of the Centre Footrest
1) Loosen and remove 2 x Allen head screws on the clamping piece on each of the adjustment tubes at the front
and rear (see fig.18, item1).
2) Slide the centre footrest into the desired position (see fig.18, item2).
INFORMATION: Note the minimum insertion depth. The footrest adapter needs to be secured to both
clamping pieces.
3) Tighten all Allen head screws to a torque of 10 Nm.
17 18
Adjusting the Footplate Depth
1) Loosen and remove 2 x Allen head screws on both clamping pieces on each of the adjustment tubes at the
front (see fig.19, item1).
2) Loosen and remove 2 x Allen head screws on both clamping pieces on each of the adjustment tubes at the rear
(not illustrated).
INFORMATION: You may need to remove the seat plate in order to reach the mounting screws.
3) Move the footplate to the desired position (see fig.20).
4) Tighten all Allen head screws to a torque of 10 Nm.
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19 20
6.9.2 Adjusting the Lower Leg Length
The required footplate position depends on the lower leg length of the user and the thickness of the seat cush
ion/seating shell/seating system that is used.
Standard/Aluminium footrest
1) Loosen the lower clamping screw (see fig.21).
2) Adjust the lower leg length (continuously adjustable). The footplate mounting bars must remain inserted in the
guide tube of the footrest holder for a distance of at least 40mm; otherwise, they can slide out of the guide
tube.
INFORMATION: Verify sufficient ground clearance.
3) Tighten the clamping screw to a torque of 10Nm.
Footrest for short lower leg lengths
1) Loosen the clamping screws (see fig.22, item 1/2).
2) Bring the footplate to the desired height by turning (see fig.22, item 3).
INFORMATION: To make necessary simultaneous adjustments to the footplate angle, see the follow
ing section.
3) Tighten the clamping screws to a torque of 9Nm.
21 22
Elevating footrest
Elevating footrest (plastic)
1) Loosen the Allen head screw (see fig.23).
2) Adjust the footplate bar to match the user's lower leg length.
INFORMATION: Ensure that the footplate bar is inserted into the swivel segment by at least 40mm (to
the marking).
3) Tighten the screws to 6Nm.
Elevating footrest (metal)
1) Loosen the Allen head screw (see fig.24, item1).
2) Adjust the footplate bar to match the user's lower leg length (see fig.24, item2).
3) Tighten the screws to 6Nm.
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23 24
Centre footrest, footplate
1) Loosen the Allen head screw on the footplate bar (see fig.25).
2) Adjust the footplate bar to match the user's lower leg length (see fig.26).
3) Tighten the screws to 6Nm.
25 26
6.9.3 Adjusting the Footplate Angle
The footplate setting should be chosen so that the ankle is in a relaxed, comfortable position.
Standard footrest
1) Loosen the Allen head screws on the adapter to adjust the footplate angle (see fig.27).
2) Set the footplate to the desired angle (see fig.28).
3) Tighten the Allen head screws to a torque of 8Nm.
27 28
Aluminium footrest
1) Loosen the Allen head screw on the pivot bearing of the footplate (see fig.29; item1).
2) Turn the mounting in the pivot bearing until the footplate reaches the desired angle (see fig.29; item2).
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3) Tighten the Allen head screw to a torque of 8Nm.
Multifunction footrest
The angle can be adjusted in 2 directions:
1) Angle adjustment for equinus position/talipes calcaneus: Loosen the Allen head screw on the footplate
joint (see fig.30; item1) and turn the footplate to the desired angle (see fig.30; item2).
2) Angle adjustment for supination/pronation: Turn the adjustment screw under the footplate in or out (see
fig.30, item3). Set the footplate to the desired angle in this manner (see fig.30; item4).
3) Tighten the Allen head screw (see step 1) to a torque of 6Nm.
29 30
Footrest for short lower leg lengths
1) Loosen the upper clamping screw (see fig.22, item2). The lower clamping screw may also have to be
loosened (see fig.22, item1).
2) Bring the footplate to the desired position (see fig.22, item4).
3) Tighten the clamping screws to a torque of 9Nm.
Elevating footrest
Elevating footrest (plastic): see the section "Standard footrest" for making adjustments.
Elevating footrest (metal): see the section "Aluminium footrest" for making adjustments.
Centre footrest
1) Loosen the Allen head screw on the pivot bearing of the footplate (see fig.31, item1).
2) Turn the mounting in the pivot bearing until the footplate reaches the desired angle (see fig.31, item2).
3) Tighten the Allen head screw to a torque of 8Nm.
31
Single-panel footplate
The angle cannot be adjusted.
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6.10 Checking/Adjusting the Seating Centre of Gravity
CAUTION
Improper adjustment of the seating centre of gravity
Risk of tipping over, falling from the seating shell/seating system
►Avoid extreme settings that could lead to tipping when adjusting the seat angle.
►Always choose centre of gravity settings so that the holding forces are as low as possible for the attendant.
►For transfemoral amputees, shift the seating centre of gravity forward. This improves the stability of the wheel
chair.
►Do not reach into the adjustment mechanism when changing the seat tilt settings.
CAUTION
Incorrect mounting of the seat frame
Falling from the seating shell/seating system due to locking mechanism malfunction
►The locking pins must fully engage on both sides in the locking plate on the seat frame in all positions over the
entire adjustment range. Only then is the support of the seat assured with extreme settings or when driving
over rough surfaces.
Checking the seating centre of gravity is required in order to ensure that the seat angle can be adjusted easily
when the user is seated.
In principle, the centre of gravity adjustment has the following effects:
Seating centre of gravity Effect
Too far in front of the pivot point Seat tilts far forward when it is unlocked;
high holding forces required during seat adjustment.
Too far behind the pivot point Seat tilts far backward when it is unlocked;
high holding forces required during seat adjustment.
Setting Recommendations
The seating centre of gravity should be individually adjusted according to the clinical picture.
The qualified personnel has to decide whether it is better that the seat swings forward or backward when no hold
ing force is applied while the locking mechanism is released. If possible, the attendant who will later push the
wheelchair should be consulted here.
Setting the Seating Centre of Gravity
1) Loosen 3 x clamping screws on each of the seat adapters on both sides (see fig.32, item 1; see fig.33, item
2).
2) Only if necessary: loosen the seat plate supports if they obstruct the adjustment of the seat adapters (see
Page13).
3) Slide the seat to the assumed seating centre of gravity on both sides.
4) Check the installation position. The distance between the front edge of the seat tube and the seat adapter must
be identical on both sides. The difference on both sides must not exceed 1.5mm.
5) Tighten all clamping screws to a torque of 10 Nm.
6) Conduct a functional test of the locking mechanism:
→Tilt the seat and lock it at various positions along the entire adjustment range.
→Ensure that the tipping movement and locking function operate easily. The locking pins must fully engage
on both sides in the locking plate in all positions over the entire adjustment range. Reference point: the
locking pins protrude slightly from the locking plate (see fig.16, item1).
7) Test the seating centre of gravity setting:
→Sit the user in the seat with the help of an assistant.
→Tilt the seat and hold it in position. Only low holding forces should be required for tilting.
Adjusting the seating centre of gravity
If the results are not satisfactory, the setting has to be readjusted without the user in the seat, as follows:
Problem Solution
Seat tilts far forward when it is unlocked;
high holding forces required during seat adjustment
Open the seat clamp and slide the seat back
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