Otto Bock Zenit User manual

Zenit
Instructions for use (qualified personnel) ................................................................. 3

2 Zenit

Foreword1 5..............................................................................................................................................................
Intended use2 5........................................................................................................................................................
Indications for use2.1 5................................................................................................................................
Indications, contraindications2.2 5.................................................................................................................
Qualification2.3 5.........................................................................................................................................
Safety3 5....................................................................................................................................................................
Explanation of warning symbols3.1 5..............................................................................................................
General safety instructions3.2 6.....................................................................................................................
Safety Instructions for Assembly3.3 6.............................................................................................................
Further information3.4 6................................................................................................................................
Nameplate3.5 6...........................................................................................................................................
Delivery4 7.................................................................................................................................................................
Scope of delivery4.1 7..................................................................................................................................
Options4.2 7...............................................................................................................................................
Storage4.3 7...............................................................................................................................................
Preparing the product for use5 7...........................................................................................................................
Assembly5.1 7.............................................................................................................................................
Settings6 9................................................................................................................................................................
Prerequisites6.1 9........................................................................................................................................
Adjusting the drive wheels6.2 9.....................................................................................................................
Setting the drive wheels horizontally6.2.1 10......................................................................................................
Adjusting the seat height and seat inclination6.2.2 12..........................................................................................
Adjusting the drive wheel camber6.2.3 13..........................................................................................................
Adjusting the track width (additional adjustment)6.2.4 14.....................................................................................
Adjusting the quick-release axle6.2.5 14............................................................................................................
Adjusting the handrims6.2.6 15........................................................................................................................
Adjusting the caster wheels6.3 15..................................................................................................................
Adjusting the caster journal angle6.3.1 15..........................................................................................................
Changing the installation position of the caster wheels6.3.2 17............................................................................
Adjusting the wheel locks6.4 18.....................................................................................................................
Adjusting the knee lever wheel locks6.4.1 18.....................................................................................................
Adjusting the scissor wheel locks6.4.2 18..........................................................................................................
Adjusting the back support6.5 19...................................................................................................................
Adjusting the back support height6.5.1 19.........................................................................................................
Adjusting the back support angle6.5.2 19..........................................................................................................
Adjusting the back support upholstery / seat upholstery6.6 20...........................................................................
Adapting the adjustable back support upholstery6.6.1 20....................................................................................
Adjusting the “ultralight” back support upholstery6.6.2 20...................................................................................
Adjusting the seat upholstery6.6.3 20................................................................................................................
Adjusting the leg supports6.7 21....................................................................................................................
Adjusting the lower leg length6.7.1 21...............................................................................................................
Adjusting the support angle6.7.2 22..................................................................................................................
Adjusting the side panels6.8 22.....................................................................................................................
Adjusting the anti-tipper6.9 23.......................................................................................................................
Adjusting the tip-assist6.10 23.........................................................................................................................
Adjusting the lap belt6.11 24...........................................................................................................................
Delivery7 24...............................................................................................................................................................
Final inspection7.1 24..................................................................................................................................
Transport to the customer7.2 24....................................................................................................................
Handing over the product7.3 25.....................................................................................................................
Maintenance and repair8 25...................................................................................................................................
Disposal9 25.............................................................................................................................................................
Disposal information9.1 25............................................................................................................................
Information on re-use9.2 25...........................................................................................................................
Table of contents
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Table of contents

Legal information10 25..............................................................................................................................................
Liability10.1 25..............................................................................................................................................
Warranty10.2 25............................................................................................................................................
Service life10.3 26.........................................................................................................................................
Technical data11 26...................................................................................................................................................
Appendices12 31........................................................................................................................................................
Required tools12.1 31....................................................................................................................................
Torque values of the screw connections12.2 31.................................................................................................
4 Zenit
Table of contents

1 Foreword
INFORMATION
Date of last update: 2020-03-19
►Please read this document carefully before using the product and observe the safety notices.
►Instruct the user in the safe use of the product.
►Please contact the manufacturer if you have questions about the product or in case of problems.
►Report each serious incident in connection with the product, in particular a worsening of the state of health, to
the manufacturer and to the relevant authority in your country.
►Please keep this document for your records.
INFORMATION
►New information regarding product safety and product recalls as well as the declaration of conformity can be
obtained at [email protected] or from the manufacturer’s service department (see inside or outside of rear
cover for addresses).
►You can request this document as a PDF file at [email protected] or from the manufacturer’s service depart
ment (see inside or outside of rear cover for addresses). The PDF file can also be displayed in a larger size.
Initial adjustments to the product were made according to the order form. Nevertheless, fine adjustments and set
tings may have to be made depending on the medical situation 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 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 manufacturer reserves the right to make technical changes to the model described in these instructions for
use.
2 Intended use
The operational safety of the product can only be ensured in case of intended use in accordance with the informa
tion contained in these instructions for use (qualified personnel) and in the instructions for use (user). The user is
ultimately responsible for accident-free operation.
2.1 Indications for use
For additional information about the indications for use, see the instructions for use (user).
2.2 Indications, contraindications
See the instructions for use (user) for more information about indications and contraindications.
2.3 Qualification
The tasks described below may only be carried out by qualified personnel. Compliance with all manufacturer spe
cifications and all applicable legal provisions is required. Please contact the manufacturer’s service department for
further information (see inside or outside of rear cover for addresses).
3 Safety
3.1 Explanation of warning symbols
WARNING Warning regarding possible serious risks of accident or injury.
CAUTION Warning regarding possible risks of accident or injury.
NOTICE Warning regarding possible technical damage.
5Zenit
Foreword

3.2 General safety instructions
CAUTION
Use of unsuitable tools
Pinching, crushing or damaging the product due to use of unsuitable tools
►When completing the tasks, only use tools that are suitable for the conditions at the place of work and for
which safety and the protection of health are assured with proper use.
►Observe the specifications in the section "Required Tools".
NOTICE
Tipping or falling of the product
Damage to product due to lack of attachment
►When you work on the product, secure it so that it cannot tip over or fall over.
►Use a clamping fixture to secure the product whenever you work on it at a workbench.
3.3 Safety Instructions for Assembly
WARNING
Changed diameter/installation position of the wheels
Tipping, falling over of the user due to blocked wheels
►Modification of the size and position of the front wheels and of the drive wheel size can lead to wobbling of the
front wheels at higher speeds. If changes are required, verify the horizontal alignment of the wheelchair frame
(see the section "Adjusting the drive wheels", "Adjusting the caster wheels").
WARNING
Improper assembly of removable wheels
Tipping, falling over of the user due to wheels coming off
►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 Further information
INFORMATION
The serial number required for enquiries and orders can be found on the nameplate. For explanations of the
nameplate, see the section "Nameplate" (see Page6).
3.5 Nameplate
The nameplates are found on the frame.
Label Meaning
AManufacturer’s product name
BCE marking
CMaximum load (see section “Technical data”)
DManufacturer information/address
ESerial number1)
FManufacturing date2)
GSymbol for medical device
HWARNING! Read the instructions for use before using the
product. Observe important safety-related information
(e.g.warnings, precautions).
IManufacturer’s reference number for the product variant
JSerial number (PI)3),1)
KGlobal Trade Item Number (DI)4)
1)YYYY = year of manufacture; WW = week of manufacture; PP = production site; XXXX = sequential production
number
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Safety
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2)YYYY = year of manufacture; MM = month of manufacture; DD = day of manufacture
3)UDI-PI to GS1 standard; UDI = Unique Device Identifier, PI = Product Identifier
4)UDI-DI to GS1 standard; UDI = Unique Device Identifier, DI = Device Identifier
4 Delivery
4.1 Scope of delivery
The scope of delivery includes:
• Preassembled wheelchair
• Two drive wheels (installed or included)
• Options according to the order
• Instructions for use (qualified personnel), instructions for use (user)
• Instructions for use for accessories (depending on equipment)
The seat cushion is not included in the standard package.
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
Store the wheelchair in a dry, enclosed room, protected from external influences. Specific information about stor
age conditions: see Page26.
During extended storage, the knee lever wheel lock on wheelchairs with PU tyres must be released since tyre
deformation may otherwise result.
Maintain sufficient clearance from sources of heat. If the product is parked for an extended period of time or the
tyres overheat (e.g.in the vicinity of radiators or in case of exposure to strong sunlight behind glass), the tyres may
become permanently deformed.
5 Preparing the product for use
5.1 Assembly
CAUTION
Exposed pinch points
Crushing, pinching due to incorrect handling
►When folding the wheelchair out or together, only grip by the specified components.
CAUTION
Failure to verify readiness for use before putting into operation
Tipping, falling due to incorrect adjustment or installation
►Check the existing settings prior to first use.
►After every assembly, check for proper mounting of the drive wheels. The quick-release axles must be
securely locked in the receiver bushings.
►Pay particular attention to the stability against tipping, free running of the drive wheels and correct function of
the wheel locks.
►Check the tyre pressure. The correct tyre pressure is printed on the sidewall. Ensure that the pressure is the
same in both tyres.
INFORMATION
The assembly described below may also be carried out the same way on the CLT model (not illustrated). The
"Folding back support" option is not offered for the Zenit CLT.
It only takes a few simple steps to prepare the wheelchair (see fig.1) for use:
Zenit; Zenit CLT – folding version
1) Only if necessary: Attach the drive wheels to the quick-release axle mounting (see fig.2). The quick-release
axles must not be removable after releasing the push-button.
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Delivery

2) Unfold the wheelchair by pulling the drive wheel to the side (see fig.3).
Ensure that the folding mechanism is fully unfolded. Hearing the folding mechanism engage audibly indicates
that the unfolding process is complete.
3) Only with “Folding back support” option: Pull the release strap for the folding mechanism of the back sup
port in the direction of travel of the wheelchair and fold the back support up (see fig.4). Ensure that the back
support latches in the top position (see fig.5).
Only with “Leg support with unlocking” option: Firmly press down the foot plate until the locking mechan
ism engages.
4) If necessary, fold the push handles up (see fig.6).
5) Fit the seat cushion. The seat cushion is secured against sliding by being pressed onto the hook-and-loop clos
ure.
1 2
3 4
5 6
Zenit R; Zenit R CLT – rigid frame version
1) Only if necessary: Attach the drive wheels to the quick-release axle mounting (see illustration above). The
quick-release axles must not be removable after releasing the push-button.
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Preparing the product for use
Zenit

2) Only with “Folding back support” option: Pull the release strap for the folding mechanism of the back sup
port in the direction of travel of the wheelchair and fold the back support up (see illustration above). In doing
so, ensure that the back support latches in the top position (see illustration above).
3) Fold the push handles up if necessary (see illustration above).
4) Fit the seat cushion. The seat cushion is secured against sliding by being pressed onto the hook-and-loop clos
ure.
6 Settings
6.1 Prerequisites
WARNING
Making incorrect adjustments
Tipping over, falling or malposition of the user due to incorrect adjustments
►Adjustment and assembly work may be carried out only by qualified personnel.
►Only the adjustments 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 section and the “Technical data” section). If you have questions, contact the
manufacturer’s service department (see inside back cover for addresses).
►Only conduct tests in the presence of an assistant.
►Unless expressly described, you may not change any settings with a person sitting in the product.
►Secure the user against falling out during all tests.
►Before testing setting changes with the user seated, firmly tighten all screw connections.
►Check for safe function before delivering the product.
CAUTION
Unsecured screw connections
Pinching, crushing, tipping over, falling of user due to assembly errors
►Always firmly re-tighten the mounting screws and nuts after changing settings. Observe the specified torques
in doing so.
►Any time you loosen a screw connection with thread lock, replace it with a new screw connection with thread
lock or secure the old screw connection with medium strength thread locker (e.g.Loctite241).
►Always replace self-locking screws and nuts with new self-locking screws and nuts after disassembly.
Fine-tuning and adjustments should always be carried out in the presence of the user. The user should be sitting
upright in the wheelchair while making adjustments.
All parts of the product should be cleaned thoroughly before adjustments are made.
The tools required for configuration and maintenance are summarised in the section "Appendices" (see Page31
ff.).
6.2 Adjusting the drive wheels
WARNING
Lack of fine adjustment of the drive wheels
Tipping over, falling of the user due to incorrect adjustment
►Check the standard adjustments of the wheelchair for stability against tipping and function of the drive
wheels. Avoid any extreme settings.
WARNING
Incorrectly adjusted wheelbase
Tipping over, falling of the user due to unstable settings
►Please note that with the drive wheel in a more forward mounting position and with an unfavourable body pos
ition, the user may tip backwards even on level ground.
►Use an anti-tipper for inexperienced users and with extreme settings of the drive wheel.
►Be sure to position the drive wheels towards the rear for transfemoral amputees. This improves the stability of
the wheelchair.
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Settings

INFORMATION
Changing the drive wheel position can also change the angle between the caster wheel journal and the ground.
However, this must always be approx. 90° and thus readjusted accordingly. The knee lever wheel lock also has
to be readjusted.
6.2.1 Setting the drive wheels horizontally
INFORMATION
Adjusting the horizontal rear wheel position on the CLT model may require new bore holes in the side panel
(clothing guard). Note the corresponding information at the end of the following instructions.
The horizontal position of the drive wheels can be adjusted by moving the quick-release axle mounting in the drive
wheel attachment device. Changing the drive wheel position has the following effects:
Position of drive wheel Effects
Move backwards (passive setting) • Larger wheelbase
• Larger turning circle
• Greater stability of the wheelchair
• Wheelchair is harder to tip backwards when crossing obstacles
• Position recommended for inexperienced users
Move forwards (active setting) • Smaller wheelbase
• Less load on caster wheels = greater manoeuvrability
• Less stability of the wheelchair
• Wheelchair is easier to tip backwards when crossing obstacles
INFORMATION: An anti-tipper should be installed if necessary.
• Setting recommended only for experienced users
The drive wheels can be adjusted horizontally to three positions within the drive wheel attachment device:
• Standard setting (see fig.7, item1)
• Active setting (+12mm, see fig.7, item2)
• Passive setting (-12mm, see fig.7, item3).
The frame detail on the left side of the wheelchair is shown. In the standard setting, a groove is visible on the top of
the drive wheel attachment device, identifying the usable bore hole (see fig.7, item1, arrow). When the drive
wheel attachment device is rotated by 180°, two grooves are visible on the top, identifying the bore holes for the
active and passive settings (see fig.7, items 2 and 3, arrows).
For determining the tipping point see fig.50.
Zenit, Zenit CLT folding wheelchair
>Prerequisite: Remove the drive wheels.
1) To switch from the standard setting to the passive or active setting (or the other way around):
→Loosen and remove the four or five Allen head screws (depending on the vertical position of the drive wheel
attachment device) respectively on the connection between the side support and folding mechanism from
the inside (fourscrews: see fig.9, item1; fifthscrew concealed: see fig.9, item2).
→Rotate the drive wheel attachment device by 180° in the side support.
→Insert the four or five Allen head screws respectively on the connection between the side support and fold
ing mechanism from the inside and tighten to 8Nm (see fig.9, item1/2).
2) Loosen the nut on the quick-release axle mounting (see fig.8) and unscrew the quick-release axle mounting
from the drive wheel attachment device.
3) Screw in the quick-release axle mounting to the desired position. In doing so, set the desired track width (see
Page14). If there is drive wheel camber (2° or greater), align the quick-release axle mounting (see Page13).
4) Thread the nut onto the quick-release axle mounting and tighten it to 40Nm (see fig.8).
→Once changed, the left and right quick-release axle mountings must both have the same position.
5) Adjust the side panels (see Page22).
Only for CLT version: Adjusting the horizontal drive wheel position may require new bore holes in the side
panel (clothing guard). In the process, the clothing guard must be repositioned according to the drive wheel
adjustment direction, and bore holes of the same size as the original bore hole must be drilled. The distance
between the drive wheel and clothing guard must be set to the original factory value. The thread lock must be
replaced (with “medium strength” thread locking compound).
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7 8
9
Zenit R, Zenit R CLT rigid frame wheelchair
>Prerequisite: Remove the drive wheels.
1) To switch from the standard setting to the passive or active setting (or the other way around), rotate the rigid
axle:
→Loosen the two Allen head screws respectively on the end piece and remove the end pieces from the side
supports (see fig.10, item1/2).
→Loosen and remove the four Allen head screws respectively on both sides of the rigid axle (see fig.11).
→Remove the rigid axle and rotate it by 180° in the retainer (see fig.12).
→Hold the rigid axle at an angle and reinsert it into the side support.
→Tighten the four Allen head screws respectively on the rigid axle to 8Nm (see fig.11).
→Install the end pieces (see fig.10, item2). To do so, tighten the Allen head screws to 8Nm (see fig.10,
item1).
2) Loosen the nut on the quick-release axle mounting (see fig.8) and unscrew the quick-release axle mounting
from the drive wheel attachment device.
3) Remove the cover if necessary (see fig.13, item1). Screw in the quick-release axle mounting in the desired
position (see fig.13, item2). In doing so, set the desired track width (see Page14).
4) If there is drive wheel camber (2° or greater), align the quick-release axle mounting (see Page13).
5) Thread the nut onto the quick-release axle mounting and tighten it to 40Nm (see fig.8).
→Once changed, the left and right quick-release axle mountings must both have the same position.
6) Adjust the side panels (see Page22).
Only for CLT version: Adjusting the horizontal drive wheel position may require new bore holes in the side
panel (clothing guard). In the process, the clothing guard must be repositioned according to the drive wheel
adjustment direction, and bore holes of the same size as the original bore hole must be drilled. The distance
between the drive wheel and clothing guard must be set to the original factory value. The thread lock must be
replaced (with “medium strength” thread locking compound).
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10 11
12 13
6.2.2 Adjusting the seat height and seat inclination
INFORMATION
The Zenit CLT version is delivered preconfigured with permanently welded side supports for attaching the drive
wheel attachment devices, a permanently welded back support and permanently welded caster attachment
devices. Subsequently changing the seat height and seat inclination with effects on the centre of gravity is not
possible. Therefore, the adjustments described below must not be carried out on the CLT model.
The seat height and the seat inclination are adjusted by moving the drive wheel attachment device vertically in con
junction with the quick-release axle mounting. This has the following effects:
Position of drive wheel Effects
Move upwards • The higher the drive wheel position, the more the seat surface is tilted to
the rear
• Wheelchair is easier to tip backwards when crossing obstacles
• The change in the centre of gravity results in a lower, more stable seat
position in the wheelchair
• The seat height can be further adjusted in combination with a height
adjustment of the caster wheels.
Move downwards • The lower the drive wheel position, the less the seat surface is tilted to the
rear
• Wheelchair is harder to tip backwards when crossing obstacles
• The seat height can be further adjusted in combination with a height
adjustment of the caster wheels.
The drive wheel height is individually pre-adjusted for the user at the factory. The drive wheel height can be correc
ted by repositioning the drive wheel attachment device in the side support.
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Settings
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>Prerequisites:
Remove the drive wheels.
Determine the current position of the drive wheel attachment device with the help of the illustrations for height
positioning (see fig.51 and the following, item1 through item14).
1) On both sides, loosen and remove the four or five Allen head screws respectively on the connection between
the side support and folding mechanism from the inside (see fig.14, see fig.9).
2) Move the drive wheel attachment device to the new position (see fig.15). Observe the corresponding illustra
tions for height positioning in doing so (see fig.51 and the following, item1 through item14).
3) On both sides, insert the four or five Allen head screws respectively on the connection between the folding
mechanism and side support from the inside and tighten them to 8Nm (see fig.14; see fig.9).
INFORMATION
When the rear seat height is changed, the seat angle and caster head angle change as well. The caster head
angle setting has to be checked after each change to the chassis and corrected as needed (see Page15).
14 15
6.2.3 Adjusting the drive wheel camber
The modular system of the product offers quick-release axle mountings with angled bores for different sloped set
tings of the drive wheels.
The drive wheel camber is adjusted by exchanging the quick-release axle mounting. This has the following effects:
Position of drive wheel Effects
0° position • Narrow track, excellent straight-line stability
• Low rolling resistance
Wheel camber • Wheelchair becomes more manoeuvrable, turns faster and tips less easily
to the side
• The wheel position protects the hands when turning the handrim
• Overall width increases
• Increased rolling resistance
The drive wheel camber can be set to 0°, 2°, 3° and 4°.
1) Remove the mounting nut of the quick-release axle mounting (see fig.8).
2) Unscrew the quick-release axle mounting from the drive wheel attachment device.
3) Screw the quick-release axle mounting into the drive wheel attachment device at the corresponding bore hole
angle for the desired camber. The groove has to face down (see fig.16).
4) Screw on the mounting nut slightly but do not tighten it firmly.
5) Slide the supplied assembly aid (spirit level) onto the quick-release axle with the drive wheel and insert the
quick-release axle into the quick-release axle mounting (see fig.17).
6) The assembly aid must engage in the groove of the quick-release axle mounting (see fig.18, item1).
7) Align the quick-release axle mounting so the spirit level is in the centre position. Tighten the mounting nut to
40Nm (see fig.19).
8) Remove the drive wheel and take off the assembly aid.
9) Reinstall the drive wheel.
→After adjustment, the camber of the left and right drive wheels must have the same sloped setting.
10) Adjust the side panels (see Page22).
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16 17
18 19
6.2.4 Adjusting the track width (additional adjustment)
INFORMATION
The adjustments described below may also be carried out the same way on the CLT model (not illustrated).
After loosening the mounting nut (see fig.8), the position of the quick-release axle mounting can be adjusted in or
out by turning it. This allows the distance between the drive wheel and the side panel to be continuously adjusted.
Please note: Only unscrew the quick-release axle mounting so that it is still flush with the side support on the
inside.
6.2.5 Adjusting the quick-release axle
The quick-release axle should be set so the wheel is correctly engaged, with no play on the axle.
1) Hold the quick-release axle by the head (wrench size: 19mm) and by the tip (wrench size: 11mm) with a ring
and open-ended wrench respectively.
2) Adjust the play by turning the nut on the end of the quick-release axle (see fig.20, item1) in or out.
20
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6.2.6 Adjusting the handrims
INFORMATION
The adjustments described below may also be carried out the same way on the CLT model (not illustrated).
INFORMATION
This section does not apply to standard wheels.
All handrims are designed for a spacing from the drive wheel of 15mm (standard setting) and 25mm.
1) Loosen/remove the handrim screw connection from the rim (see fig.22).
2) Tightly screw the handrims onto the rim in narrow or wide installation position.
21 22
6.3 Adjusting the caster wheels
6.3.1 Adjusting the caster journal angle
INFORMATION
The adjustments described below may not be carried out on the CLT or CLT Ultra model.
When the drive wheels have been adjusted for the user, the caster journal angle must be adjusted at the caster
wheel adapter.
The bolt of the caster fork in the caster wheel mounting (see fig.23, item1) must be perpendicular to the ground to
ensure optimum wheelchair driving characteristics. The caster wheel adapter permits adjustment of this angle in
1.5° increments.
By moving the tenon jointing wheel on the caster wheel adapter, the caster wheel journal angle can be corrected in
1.5° increments starting from the zero position (see fig.24) (scale value 1 corresponds to 1.5°, scale value 2 cor
responds to 3° etc.; see fig.25):
• Long marking line (see fig.25): settings in the range of 0 to ±10.5°
• Short marking lines (see fig.26): settings in the extended range from ±12°
INFORMATION
The markings that are visible when looking at the wheelchair or caster wheel adapter from the front are relevant.
The setting in the range up to ±10.5° (long marking line) is shown in the following.
1) Loosen the Allen head screw on the caster wheel adapter (see fig.27, item1) and remove the cover.
2) Loosen the mounting screw for the caster wheel journal angle (see fig.28, item1) until the tenon jointing wheel
(see fig.28, item2) is released from the retainer on one side and moves freely on one side (see fig.29).
CAUTION! A thread locking compound (Tuflok blue) on the mounting screw prevents unintention
al/independent loosening. Note that the mounting screw has to be replaced or secured with Loctite
(medium strength) after the second time it is loosened.
3) Set the expected correct angle (the long marking line on the retainer is applicable) and press the tenon jointing
wheel on one side back into the retainer.
4) Release the other side of the tenon jointing wheel from the retainer and turn the caster wheel adapter until the
long marking line also indicates the same scale position on the tenon jointing wheel (see fig.30).
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5) Slightly tighten the mounting screw for the caster wheel journal angle (see fig.28) and, by applying the sup
plied assembly aid, check whether the angle in the direction of travel is close to 90° (see fig.23, item1/2). If
this is not the case, correct it again (see starting at step 2).
6) Tighten the mounting screw for the caster wheel journal angle to 30Nm.
7) Put on the cover and tighten the Allen head screw (see fig.27).
8) For the caster head on the opposite side, set the tenon jointing wheel to the same scale value.
23 24
25 26
27 28
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29 30
6.3.2 Changing the installation position of the caster wheels
INFORMATION
The adjustments described below may not be carried out on the CLT or CLT Ultra model.
INFORMATION
Please refer to the seat height table in the technical data.
The front seat height is adjusted using the row of holes in the fork and the diameter of the caster wheels.
1) Loosen the screw connection on the threaded sleeve (see fig.31).
2) Remove the threaded sleeve and spacer bushings.
INFORMATION: Note that the illustrated and described spacer bushings are not present with all
offered caster wheels.
3) Remove the caster wheel.
4) Insert the threaded sleeve (see fig.32, item1) into the desired hole in the fork and slide on the first spacer
bushing (see fig.32, item2) from the inside.
5) Install the caster wheel (see fig.32, item3).
6) Push on the second spacer bushing (see fig.32, item4).
7) Insert the mounting screw (see fig.32, item5) and tighten the threaded sleeve to 8Nm.
→Once changed, the left and right caster wheels must have the same vertical position in the caster fork.
→After changing the front seat height, always check the caster wheel journal angle and adjust it if necessary (see
Page15).
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6.4 Adjusting the wheel locks
WARNING
Failure to verify brake functionality
Accident, user falls due to incorrect adjustment and improperly inflated tyres
►Check the correct spacing between the wheel lock bolt and tyre (see the following section for details).
►Check the correct position of the wheel lock bolt relative to the tyre. During braking, the wheel lock bolt has to
cover at least half the tyre width.
►Always carry out adjustments to the wheel lock on both sides.
►Ensure that the user can operate the wheel lock without great effort. The force required to do so must not
exceed 60N.
►Check the tyre pressure of the drive wheels. Note the information in the section “Technical data” or on the tyre
sidewall.
►Only use original drive wheels with a verified maximum radial out-of-round of 1mm.
6.4.1 Adjusting the knee lever wheel locks
This adjustment must be made after the drive wheel has been repositioned or during readjustment.
1) Loosen the Allen head screws in the clamp brackets (as with scissor wheel locks, see fig.34).
2) Adjust the knee lever wheel lock by sliding it. When the wheel lock is disengaged, the gap between the tyre
and wheel lock bolt must not exceed 5mm (see fig.33).
→The distance between the wheel lock bolt and the drive wheel must be1–5mmin the unbraked condition.
→It must be possible to operate the brake evenly and easily on both sides.
→The wheel lock bolt must lock the drive wheel securely when stationary.
3) Tighten the Allen head screws on the clamp brackets evenly to 12Nm.
→After adjustment, the left and right knee lever wheel locks must both have the same braking force.
5 mm
33
6.4.2 Adjusting the scissor wheel locks
1) Loosen the Allen head screws in the clamp brackets (see fig.34).
2) Adjust the wheel lock by sliding it. When the wheel lock is disengaged, the gap between the tyre and wheel
lock bolt must not exceed 5mm (not illustrated).
3) Adjust the scissor wheel lock so that the full braking force is reached and the swivelling parts can also move
freely without colliding.
→The scissor wheel lock must not hit the frame when it is open.
→It must be possible to operate the brake evenly and easily on both sides.
→The wheel lock bolt must lock the drive wheel securely when stationary.
4) In two passes, tighten the Allen head screws on the clamp brackets evenly to 12Nm (see fig.34).
→After adjustment, the left and right scissor wheel locks must both have the same braking force.
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6.5 Adjusting the back support
INFORMATION
The adjustments described below may not be carried out on the CLT or CLT Ultra model.
6.5.1 Adjusting the back support height
The back height cannot be adjusted with this wheelchair type.
6.5.2 Adjusting the back support angle
INFORMATION
The adjustments described below may not be carried out on the CLT or CLT Ultra model.
WARNING
Missing anti-tipper
Tipping over, falling of the user due to missing safety devices
►If the back is tilted far to the rear and in the case of a short wheelbase, 2 anti-tippers (one on each side) must
be mounted and in a functional position; in the case of a long wheelbase, at least one anti-tipper must be
mounted and in a functional position.
►Check that the anti-tipper is securely attached.
When using a folding backrest, the backrest angle can be adjusted from -10° to +10° in 5° increments to meet the
needs of the user.
1) Loosen and remove the mounting screws (Allen head screw) on both sides (see fig.35, item 1).
2) Insert the mounting screws on both sides into the same bore combination for the desired back angle (see
fig.36, item 1, 2 or 3 or see fig.37, item 4 or 5).
3) Re-tighten the mounting screws.
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6.6 Adjusting the back support upholstery / seat upholstery
INFORMATION
The adjustments described below may also be carried out the same way on the CLT model (not illustrated).
6.6.1 Adapting the adjustable back support upholstery
INFORMATION
A well-adjusted back support provides lasting comfort for the wheelchair user and reduces the risk of secondary
damage and pressure zones.
INFORMATION
Ensure that the user’s pelvis is positioned as far back in the wheelchair as possible, i.e.between the back sup
port tubes.
The back support upholstery can be adapted in segments to the needs of the user.
1) Remove the back support pad.
2) Loosen the hook-and-loop fastener of the upholstery straps (see fig.38, item1).
3) Fasten the upholstery straps with the desired tension using the hook-and-loop fastener.
If necessary, unthread/thread the upholstery straps from/through the flaps to do so (see fig.39, item1).
4) If the upholstery straps are too long, they can be shortened. To do so, remove the end pieces from the uphol
stery straps (see fig.39, item2), trim the upholstery straps and reinstall the end pieces.
5) Put on the back support pad and attach it with the hook-and-loop fastener.
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6.6.2 Adjusting the “ultralight” back support upholstery
The back upholstery tension cannot be adjusted with this wheelchair type.
6.6.3 Adjusting the seat upholstery
"Ultralight" seat upholstery
There are no adjustment possibilities for the "ultralight" seat upholstery.
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