Sunrise Medical Empulse WheelDrive User manual

WheelDrive
Generation 2019
USER MANUAL
EN
Power assist
9008027G

2WheelDrive Rev.G

3WheelDrive Rev.G
English
© 2017 Sunrise Medical
All rights reserved.
The information provided herein may not be reproduced and/or published in any form, by print,
photoprint, microlm or any other means whatsoever (electronically or mechanically) without the prior
written authorization of Sunrise Medical.
The information provided is based on general data concerning the construction known at the time
of the publication of this manual. Sunrise Medical executes a policy of continuous improvement and
reserves the right to changes and modications.
The information provided is valid for the product in its standard version. Sunrise Medical, as
distributor, can therefore not be held liable for any damage resulting from specications of the product
deviating from the standard conguration. Illustrations contained in the manual may deviate from the
conguration of your product.
The information made available has been prepared with all possible diligence, but Sunrise Medical,
as distributor, cannot be held liable for any errors contained in the information or the consequences
thereof.
Sunrise Medical accepts no liability for loss resulting from work executed by third parties.
Names, trade names, trademarks etc. used by Sunrise Medical may not, as per the legislation
concerning the protection of trade names, be considered as being available.

4WheelDrive Rev.G
Table of contents
1 Introduction.................................................................................................................................. 5
1.1 This user manual 5
1.2 For further information 5
1.3 Symbols used in this manual 5
2 Safety .......................................................................................................................................... 6
2.1 Temperature 6
2.2 Electromagnetic radiation 6
2.3 Moving parts 6
2.4 Entrapment points 7
2.5 General safety guidelines and instructions 7
3 Product description...................................................................................................................... 9
3.1 Main parts 9
3.2 The user 10
3.3 The wheelchair 10
3.4 User environment 10
3.5 Software adjustment options 11
4 Use of the power assist............................................................................................................. 12
4.1 First use 12
4.2 Activating the power assist 12
4.3 Charging the batteries 14
4.4 Using the batteries 16
4.5 Driving - using the rims 16
4.6 Obstacles and slopes 18
4.7 Mounting and dismounting a power assist 20
4.8 Storage 22
4.9 Lifting the power assist wheels 23
4.10 Safety functionalities 23
5 Anti-tip settings.......................................................................................................................... 25
6 Transport ................................................................................................................................... 26
6.1 Transport without occupant 26
6.2 As a passenger seat in a car 27
6.3 Special shipping requirements 28
7 Maintenance.............................................................................................................................. 29
7.1 Maintenance plan 29
7.2 Tyres 30
7.3 Cleaning 30
7.4 Decommissioning the power assist 31
8 Troubleshooting......................................................................................................................... 32
8.1 System notication 42
9 Technical specications............................................................................................................. 43
9.1 CE declaration and requirements 43
9.2 Technical information 43
10 Labellling ................................................................................................................................... 45
10.1 Markings on the power assist 45
11 Guarantee ................................................................................................................................. 46

5WheelDrive Rev.G
1 Introduction
Congratulations for choosing Sunrise Medical
for the power assist of your manual wheelchair.
The high-quality mobility products distributed
by Sunrise Medical are designed to enhance
independence and make your everyday life
easier.
1.1 This user manual
This user manual will help you to use and
maintain your WheelDrive Power assist safely.
Read this entire user manual carefully
before using the product.
If you are visually impaired, this
document can be viewed in PDF format at
www.SunriseMedical.eu or alternatively is
available on request in large text.
1.2 For further information
Please contact your local, authorised Sunrise
Medical dealer if you have any questions
regarding the use, maintenance or safety of
your wheelchair. In case there is no authorised
dealer in your area or you have any questions,
contact Sunrise Medical either in writing or by
telephone.
For information about product safety
notices and product recalls, go to
www.SunriseMedical.eu
1.3 Symbols used in this manual
Note!
Pointing out possible problems to the user.
Caution!
Advice for the user to prevent damage to the
product.
Warning!
Warnings for the user to prevent personal
injury.
Not following these instructions may result
in physical injury, damage to the product or
damage to the environment!
Symbols in illustrations
Each illustration includes icons and numbering
to indicate what needs to be done and in which
order.
12
,Step 1, 2 etc.
An arrow, as part of an illustration, indicates
that the component in question moves or needs
to be moved in the direction indicated.

6WheelDrive Rev.G
2 Safety
Please note all safety instructions before
starting to use the power assist.
Warning!
Always follow the instructions given next to
the warning symbols! Not following these
instructions may result in physical injury,
damage to the wheelchair or damage to
the environment. Where possible, the
warnings have been placed in the applicable
paragraphs.
2.1 Temperature
Warning!
Avoid physical contact with the motors in
the power assist system. The motors are
continuously in motion during use and can
become warm. After use, the motors will cool
down slowly. Physical contact may cause
burns.
Caution!
Ensure that the power assist is not exposed
to direct sunlight for extended periods of
time, because this can increase surface
temperatures signicantly.
2.2 Electromagnetic radiation
The power assist has been tested for
compliance with the relevant requirements
regarding electromagnetic radiation (EMC
requirements). This implies the power assist
can be used under normal circumstances.
Note!
It cannot be excluded that electromagnetic
radiation emanating from mobile telephones,
medical apparatus and other sources, may
have an inuence on the power assist.
It cannot be excluded that the power assist
will interfere with the electromagnetic elds
of, for example, shop doors, burglar alarm
systems and/or garage door openers.
Caution!
Do not use the power assist near strong
electrical interference elds, such as
products with very strong magnets.
In case you experience strange behaviour
in a particular environment, switch o󰀨 your
power assist or leave that environment as
soon as possible. If the strange behaviour
remains, please contact your dealer.
2.3 Moving parts
Warning!
The power assist has moving and rotating
parts. Be careful: contact with moving parts
may result in serious physical injury or
damage to the power assist.

7WheelDrive Rev.G
1
2.4 Entrapment points
Possible entrapment points when the battery
pack is removed.
Caution!
If the battery pack is removed some
openings occur, see gure 1. Do not put
ngers or any other objects in the opening
to prevent nger entrapment and possible
damage to the power assist.
2.5 General safety guidelines and
instructions
Sunrise Medical accepts no liability whatsoever
for damage or injury caused by failure to
(strictly) adhere to the safety guidelines and
instructions or else due to carelessness
during the use, service and cleaning of the
power assist. Depending on the specic use
circumstances, additional safety instructions
may be required. Please contact your dealer
immediately if you observe a potential danger
during the use of the product.
The power assist is suitable for indoor and
outdoor use (EN 12184 class B).
Warning!
Only use the power assist as intended and
as prescribed in this manual. Do not adjust or
change the product if not promptly described.
Do not use parts or add-ons which are not
clearly marked as compatible with the power
assist.
To avoid accidents and other problems, it is
very important to pay attention to the safety
instructions as described in the user manual
of the manual wheelchair which the power
assist will be used with.
The power assist should only be used for
transport of users with a maximum user
weight of 130 kg.
Only use the power assist in situations you
would normally use a manual wheelchair as
well. With the power switched o󰀨, the power
assist behaves just like a manual wheelchair.

8WheelDrive Rev.G
In order to have enough battery capacity it
is adviced to charge the batteries, when the
power assist is not being used.
It is advised to mount a smoke detector in
the charging area.
Disconnect batteries in case of longer
storage without usage.
When not using the power assist always
engage the parking brake of your wheelchair.
Do not use the power assist in combination
with a wheelchair puller or hand bike. The
power assist is not designed for the speeds
of these applications.
It is advised never to use the power assist
on a slope with an angle of more than 6°,
above this angle the power assist can be
insu󰀩cient.
While driving on a steep slope (more than
3°) and taking obstacles it is advised to use
the large rim. In case of emergency you can
propel and brake manually.
Caution!
Never open the batteries or electronic
housings.
Do not connect any other equipment to the
power assist.
Do not drive faster than 6 km/h with the
power assist without connected batteries to
prevent potential damage to the system.
Driving through deep puddles is not
considered as normal use and may cause
damage to the motors and other electronics.
Never clean the power assist using a hose or
pressure washer.
It is best to charge the batteries daily.
The power assist should be cleaned with a
damp cloth only.
In case of possible technical malfunctioning,
please contact your dealer.

9WheelDrive Rev.G
A
B
F
E
C
D
H
G
I
2
3 Product description
The power assist is a unique product giving
manual wheelchair users additional power
assistance, by just using one of the rims on the
power assist wheels. The large Assist rim can
be used as a conventional wheelchair push
rim to manually propel the wheel. In case the
power assist is switched on, the motor of the
power assist will give power assistance while
driving. The amount of support that is provided
is dependent on the selected prole and the
force applied to the rim. The smaller Drive rim
provides continuous support and can be used to
move forwards or backwards – in this case no
manual propulsion is required. The power assist
is very intuitive to use, but some practise and
training is required for safe usage.
3.1 Main parts
The main parts of the power assist are illustrated
(gure 2).
A. Sensor box
B. Prole buttons
C. Assist rim
D. Drive rim
E. Support blocks
F. Anti-tip
G. Battery pack
H. Charge connector
I. Wheel handle

10 WheelDrive Rev.G
3.2 The user
The power assist is developed for users of
manual wheelchairs with a uctuating or
decreasing condition and/or strength in body or
limbs.
The user must be able to estimate and correct
the results of actions taken when operating the
wheelchair. The user of the power assist should
have experience with a manual wheelchair and
must be able to use, drive, brake and handle a
manual wheelchair without support.
Both left and right wheels work independently
from each other. The power assist is not
intended for one hand operation.
The user must be familiar with the contents of
the user manual before driving the wheelchair.
In addition, the user of the wheelchair must have
been given thorough instruction in using the
wheelchair by a qualied specialist before he or
she participates in tra󰀩c. The rst sessions in
the wheelchair with the power assist should be
held under the supervision of a trainer/advisor.
Please contact your dealer in case of questions.
Warning!
The user of the power assist is responsible
for complying with the applicable local safety
regulations and guidelines. Contact your
dealer for information about regulations
applicable to your usage conditions.
Driving with the power assist under the
inuence of medicines that can a󰀨ect your
ability to drive is not permitted.
Driving with the power assist without su󰀩cient
eyesight is not permitted.
No more than one person is to be seated in a
wheelchair with the power assist at a time.
Do not allow young children to drive
unsupervised in a wheelchair with the power
assist.
3.3 The wheelchair
The power assist is compatible with most
common wheelchair frames in the market.
The installation can be done with a number of
standard parts, supplied with the power assist
wheels. For each wheelchair frame model a
di󰀨erent setting is needed. Once a wheel is set
for a certain frame, it cannot be put directly onto
another frame; an adjustment to the settings is
required.
3.4 User environment
This power assist has been designed for
both indoor and outdoor use (and as such is
classied as a class B system according
EN12184 (2014)). When driving the wheelchair
with power assist outdoors, it is advised to
drive on paved roads, pavements, footpaths
and bicycle paths. Adjust the speed to suit the
environment.
Caution!
Do not use the power assist when
temperatures are below -10°C or above
+40°C.
Only drive on rm surfaces. Avoid loose
gravel, sand, mud, snow, ice or deep puddles.
Drive carefully on roads which are slippery as
a result of rain, ice or snow!
Clean the system after driving in wet weather
by drying the product with a cloth or towel.
Do not drive through puddles of water – the
power assist is so called splashing water
proof (normal outdoor rain conditions). Never
submerge any part containing electronics in
liquids.
Prevent the power assist from coming into
contact with sea water: sea water can cause
corrosion and may damage the system.
Prevent the power assist from coming into
contact with sand: sand can come into
the moving parts of the system, causing
unnecessary fast wear of these parts

11WheelDrive Rev.G
Warning!
It is advised to select a low driving prole
when driving indoors, on pavements and in
pedestrian areas.
Take extra care when driving at higher speeds.
Do not drive o󰀨 obstacles higher than 50 mm.
Overcome obstacles only by driving
backwards, if possible.
Do not attach any weights to the power assist
system or wheelchair frame without the
approval of a qualied specialist. This may
negatively a󰀨ect the stability of the product.
It is advised to use fully charged batteries
when driving up a slope (less charged batteries
can supply less power than fully charged
batteries). For taking slopes at least 2 LEDs of
the battery indicator should be on.
It is advised to use the Assist rim when driving
up or down a slope. Before you use the Drive
rim on slopes, make sure you are familiar with
the use of the Drive rim e.g. by learning on
slight slopes. In case you want to use the Drive
rim on slopes, make sure that you make the
correct power setting before you start to take
the slope.
Beware that in di󰀩cult situations you should be
able to take over to the Assist rims.
Take special care when driving down slopes of
any kind. Adjust your speed to maintain safe
control.
When descending with Assist rims, the system
will reach and keep a maximum speed of ~15
km/h. Exceeding this speed is not possible.
This speed is settable by an authorized
person.
Beware that each power assist wheel is a few
cm wider than a standard manual wheel; be
careful taking narrow doors and hallways.
3.5 Software adjustment options
The electronics of the power assist are
programmed to an average usage/driving
prole – several parameters are available
that can be adjusted to inuence the driving
behaviour. Please contact your dealer about
possible adjustments.
Warning!
Only an authorized person is allowed to
make any adjustments and program the
power assist.
Incorrect programming can lead to unsafe
situations.

12 WheelDrive Rev.G
4 Use of the power assist
4.1 First use
One battery pack contact is protected with a
small rubber part to prevent discharge. Take out
the battery pack and remove this part before
activating the power assist (gure 3).
A. Power On/O󰀨 button
Switch the power assist on by pushing the Power On/O󰀨 button on the user interface. You will hear
one short beep. Switch it o󰀨 again by pushing the Power On/O󰀨 button a second time. You will hear
one longer beep.
B. Prole buttons front, middle and rear
The power assist has 3 driving proles: I, II, III, Each prole and support level -with specic driving
characteristics- can be selected by pushing the appropriate button on the user interface.
When choosing prole I, the orange LED below button B1 will light up. When choosing prole II, the
orange LED’s below button B1 and B2 will light up. When choosing prole III, all 3 LED’s will light up.
An appropriate driving prole and speed should be chosen depending on the user’s needs and safety.
B1
B2
B3
C
AA
right wheelleft wheel
3
4
4.2 Activating the power assist
In order to use the power assist, both wheels
(left and right) should be turned on (gure 4)
A. Power On/O󰀨 button
B. 3 Prole buttons, button 1 is the rst button
pointing to the front of the wheelchair
C. Battery indicator

13WheelDrive Rev.G
Driving prole Signal
Recommended use area Energy consumption
I=front (B1) One beep Indoors, many obstacles Low
II=middle (B2) Two beeps Indoors, limited number of obstacles Medium
III=rear (B3) Three beeps Outdoor areas and inclines High
Note!
Selection of the same driving prole on both
power assist wheels normally gives the best
driving experience.
When turning on the power assist the driving
prole will start at prole I.
C. Battery indicator (see next paragraph)

14 WheelDrive Rev.G
4.3 Charging the batteries
Only use the supplied battery chargers to
charge the battery packs (gure 5). The battery
pack include electronics to control the charging
process – it will stop the charging process when
the batteries are fully charged; overloading is not
possible.
Each wheel has a separate battery. Both battery
packs need to be charged separately. Both
chargers can be used for both battery packs.
Batteries can be charged when they are mounted
on the power assist. Batteries can also be taken
o󰀨 for charging.
To prevent you from getting into a situation
where no power assist is available, it is strongly
recommended to charge both batteries every day.
Each battery pack has a charge connector with a
black cover. Open the cover and insert the plug
with the at side to the right (gure 6).
In case the power assist is switched ON, the
charging level of the main battery is indicated via
the battery indication LEDs on the user interface
(gure 7).
Please note that batteries can discharge
di󰀨erently (max 10%).
Warning!
In case all battery indication LEDs are o󰀨 when
the power assist is turned on, this might be due
to a system error. Please contact your dealer.
During charging the LED on the charger will turn
red.
When the battery is fully charged, the LED
indicator of the charger will turn green. Now you
can disconnect the plug. Please pull at the plug
itself, not the cord.
After disconnecting the plug, close the black
connector cover to prevent water and dirt coming
in.
The charger plug is not properly connected when
the red light on the charger ashes.
Remove the plug from the battery and reinsert
it. If the light keeps ashing please contact your
dealer.
1 LED blinking quickly
Filled is on
White is off
Battery indication
80% - 100% full
60% - 80% full
40% - 60% full
20% - 40% full
10% - 20% full
Almost empty
Less than 10%
Auto power off
forthcoming
5 LEDs on
4 LEDs on
3 LEDs on
2 LEDs on
1 LED blinking slowly
Beeping 2 times
Beeping 2 times
6
7
5

15WheelDrive Rev.G
During charging, the LEDs that are not ON,
indicate the charge status by lighting the
remaining LED's stepwise as shown in gure 8.
Caution!
Only use an original battery charger,
distributed by the manufacturer, to prevent
dangerous situations.
Never subject the charger to humidity – only
use it indoors.
Never charge the battery packs at
temperatures below 10°C or above 30°C.
Do not store batteries at temperatures higher
than 30°C (this will reduce the service life
signicantly).
Charge the battery pack completely before
long-term storage, and check the charge
level every 3 months. Even not-used
batteries will discharge slowly; prevent the
batteries to become completely empty (deep
discharge of the batteries will damage the
batteries).
Remove the charger when batteries are
completely charged.
Never pull the cable to remove the battery
charger from the mains or charge connector.
Always attach the black connector cover if
no battery charger is connected, to prevent
water and dirt coming in.
Warning!
In case the batteries are completely empty
the power assist will shut down automatically
to prevent deep-discharge (and damaging) of
the batteries. The wheels continue to run, but
power assistance is not available anymore.
During charging the batteries of the power
assist, no power assistance is available.
Do not drive with the power assist during
charging the batteries if they are attached to
the wheels.
Check your battery levels before starting a
ride.
Step 5
Step 2
Step 3
Step 1
Step 1
Step 4
Etc.
8

16 WheelDrive Rev.G
4.4 Using the batteries
Removing the battery pack
Place your ngers under the handle and pull
it upward. This will unlock the battery pack
(gure 9).
Placing the battery pack
Place your ngers under the handle and
position the battery pack to the contacts of
the electronic housing. Push the battery pack
against the wheel until the battery pack audibly
and perceptibly clicks into the electronics
housing. Check if the battery is fully xed in the
electronics housing (gure 10).
Warning!
Make sure the wheel hub and battery pack
are clean and dry when inserting the battery
pack!
With the battery pack removed, some
openings are visible - do not push your
ngers in any openings to prevent possible
injuries or damages.
4.5 Driving - using the rims
Assist rim (A in gure 11)
This rim works the same as the rims on a
manual wheelchair. By using these Assist rims
the motor supports the forward and backward
movement. The support level is dependent on
the selected prole and force applied to the rim.
Assist rim usage
When applying more force on the Assist rims,
the system will give more support. When less
force is applied on the Assist rim, the system
will give less support. In this way the required
speed can be controlled.
Braking with the Assist rim
Braking with the Assist rim is comparable with
braking with a manual wheelchair. When the
system is on, the power assist o󰀨ers additional
motor support when moving the rim backwards.
The user is part of the braking system.
A
B
11
1
2
1
2
9
10

17WheelDrive Rev.G
Warning!
While using the Drive rim, beware not to
put your ngers too far inwards between
the spokes of the wheel. Pay attention with
clothes that can get caught in the spokes.
If you do not feel secure, it is advised to use
power assist spoke protection. Only use the
original spoke guard that is developed for the
WheelDrive.
Before driving, be sure the tyres are
su󰀩ciently inated (up to 6-10 bar).
Before driving, be sure the batteries are
su󰀩ciently charged.
Always use the Drive rims in a smooth
and uniform way to get the best driving
experience.
Warning!
The Assist rim is connected to a sensor. Do
not use the Assist rim to lean on, for making
a transfer from or to your wheelchair.
Drive rim (B in gure 11)
This rim works di󰀨erently than the Assist rim.
When using these rims the motor will give
continuous support. As long as the Drive rim
is pushed forward, the wheelchair will move
forward. If the Drive rim is pushed backwards,
the wheelchair will move backwards. When the
Drive rim is released, the motor support will
stop. The wheelchair will not immediately stop,
but gradually brake on the motor. If the system
is turned o󰀨, the Drive rims have no function.
Drive rim usage
The Drive rim can be pushed forward and
backwards until an end position; in this position
the speed is maximum. If the Drive rim is
carefully pushed forward, the speed increases
according to how far the rim is pushed forward.
Braking with the Drive rim
By pushing the rim carefully backwards, the
speed decreases. This way you can break with
the Drive rim. By moving the rim even more
backwards, the wheelchair will drive backwards.
The acceleration and maximum speed di󰀨ers
per driving prole.
The system automatically stops accelerating
when the maximum speed setting is reached,
and tries to keep the maximum speed constant
at this value.

18 WheelDrive Rev.G
Driving down a curb
1. Choose the place where the curb is at its
lowest.
2. Drive straight down the curb with your front
wheels at a right angle to it.
3. Propel the Assist rim slowly forward. Drive
down the curb carefully and as slowly as
possible without changing direction.
Pushing the wheelchair to take an obstacle
An obstacle can be taken by an attendant
pushing the wheelchair. Put the power assist o󰀨
before pushing.
4.6 Obstacles and slopes
Take extra care when taking obstacles (such
as thresholds, curbs and narrow doors and
hallways) and when driving on slopes. Only use
the power assist in situations where you would
feel safe with a normal manual wheelchair
without Power assist. Make sure that you rst
exercise with both rims to get familiar with their
functions before taking obstacles and slopes.
It is advised to use the Assist rim for taking
obstacles and slopes. This way you have the
best control for driving and braking.
Taking obstacles
The power assist is certied for taking obstacles
up to 50 mm. Obstacles higher than 25% of
the front wheel diameter should be taken by
backward driving. Low obstacles can be taken
by forward driving. The size and construction of
the front wheels of your wheelchair are of great
inuence on taking obstacles. Drive carefully
towards the obstacle with the front wheels.
Select the appropriate prole and then take a
short run up (15-20 cm) to climb the obstacle.
Make sure the wheelchair does not keep
accelerating after climbing an obstacle.
Warning!
Do not drive o󰀨/over of high obstacles
(higher than 50 mm).
Obstacles higher than 25% of the front wheel
diameter should be taken by backward
driving.
Driving up a curb
1. Choose the place where the curb is at its
lowest.
2. Drive straight up to the curb at a right angle
to it (15-20 cm in front of the curb).
3. Propel the Assist rim forward. Drive up the
curb without changing direction.
4. Maintain speed until all of the wheels are
on the sidewalk. If mounting the sidewalk is
not possible, nd a place where the curb is
lower.

19WheelDrive Rev.G
Driving on slopes
Warning!
When driving up or down a slope always use
an anti-tip device.
It is advised to use the Assist rims when
driving up/down a slope, since you have direct
control for driving and braking.
It is advised to use fully charged batteries
when driving up a slope (less charged
batteries can supply less power than fully
charged batteries). For taking slopes at least
2 LEDs of the battery indicator should be on.
Only drive on slopes where you would feel
comfortable doing so (even) with a manual
wheelchair without Power assist.
Avoid sudden, jerky movements; always drive
carefully and with the highest concentration.
Avoid making emergency stops on a slope.
For your safety: avoid changing direction on a
slope whenever possible.
Do not drive on slopes with loose gravel or a
sandy surface, as one of the driving wheels
could slip/spin.
If you notice a signicant decrease in speed
when driving up a slope, try to take a route
which is less steep.
Take special care when driving down slopes
of any kind. Adjust your speed to maintain
safe control.
The stopping distance on slopes can be
signicantly greater than on level grounds.
When descending without using the rims,
the motor can start generating energy and
charging the battery when braking on the
motor is activated.
When descending with a too high speed, the
power assist can shut down automatically due
to over-voltage. The wheels continue to run,
but power assistance is not available anymore.
Driving up slope with Assist rim
1. Propel the Assist rim slowly forward.
2. When releasing the Assist rim, the motor
brakes and prevents rolling back.
3. The Assist rim can now be propelled forward
again.
4. Repeat steps 1-3 until the complete slope is
taken.
Warning!
When pushing back yourself e.g. from a table
the brake function as described above might
get active: To avoid this always push back
only with a very low speed.
Driving down slope with Assist rim
When driving down slope with the Assist rims
and you want to slow down, you can push back
the Assist rims softly. The motor will brake and
keep the speed constant.
Warning!
When the absolute speed limit is reached,
the user can notice a di󰀨erence between both
wheels. This may cause the Power assist
diverge from its direction.
When driving down slope use both Assist rims
to correct the driving direction. Using only
one of the Assist rims might result in braking
on one side and cause an unexpected turn.
Driving down slope with Drive rim
Driving down slope with the Drive rim o󰀨ers a
max speed of 6 km/h which can make it more
easy to drive a constant speed.

20 WheelDrive Rev.G
4.7 Mounting and dismounting a
power assist
Power assist is designed to t most common
manual wheelchair frames and can be installed
without making adjustments to the wheelchair
frame itself. In some cases re-adjustment of
front wheels is required after replacing manual
wheels for the power assist.
The power assist wheels can be taken o󰀨 for
transport or changing them for manual wheels.
The power assist is mounted on a wheelchair
frame by making use of a quick release axle.
The size and setting of the quick release axle
is dependent on the brand and type of your
manual wheelchair frame and determined by
your dealer.
At the rear side of a power assist wheel there
is an anti-tip plate in which 2 cone-shaped
supports are screwed (gure 12). The position
of the supports is dependent on the brand and
type of your manual wheelchair frame and
determined by your dealer.
Dismounting of a wheel (gure 13)
By rotating the wheel handle upwards, the
wheel handle will be placed in the correct
position. Unlock the axle by pushing the unlock
button just above the handle with your thumb.
Now the wheel can be removed from the chair.
The easiest way to do this is by lifting the chair
a little bit.
1. Pull the wheel handle vertically up.
2. Push the button to release the quick release
axle.
3. Pull the wheel handle to dismount the wheel.
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12
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