User’s manual
Edition 09/2013
Read and follow all instructions, warnings and notes in this manual before attempting to
operate your power wheelchair for the first time. If any part of the text is not clear or if
you need any further information, please, contact your dealer.
RIDER II is a power wheelchair designed according to the latest trends and technology.
The power wheelchair you have purchased combines state-of-the-art components with
safety, comfort and styling in mind guaranteeing maximum comfort of use.
In order to ensure smooth operation and safety the power wheelchair should be regularly
checked (at least once a year) at a service point.
Should you have any doubts or in case of damage of the power wheelchair, contact your
service centre, which has all the skills to solve your problem.
Please, make sure that you filled in the guarantee form and that you returned it to your
dealer. It will help to ensure the best service.
The manufacturer and the distributor are not liable for any damage to property or
persons resulting from the use of power wheelchair contrary to the safety standards
specified in the manual.
Practical advice relating to the use of the power wheelchair.
Before you start to freely use the power wheelchair find an open area where you
can practice all the manoeuvres and where you can get acquainted with the
operating system of the power wheelchair.
It is best to use the assistance of another person who will aid and assist you till you
gain total confidence and freed of movement when driving the power wheelchair.
Before you get in always make sure that the vehicle is set off and that the speed
setting is set on the value chosen according to your experience and skills.
When using the power wheelchair for the first time set the speed to the minimum
value so as to safely practice the operation and to get acquainted with its
In order to drive safely, make sure that you are familiar with
vehicle characteristics and ways of driving.
First, practice moving forward. Make sure that the speed is set
on the slowest position.
When you master moving forward in a straight line,
practice “S” turns.
Please, mark that while driving backwards the vehicle always moves slower
regardless of the speed setting.
Do not carry passengers
Do not drive the power chair
perpendicular to the slope
Do not drink and drive a power chair.
Consult your physician to check if your
medications impair your driving abilities.
Do not use any personal communication devices such
as CB radios, cellular phones while driving a power
Catalogue number
127 cm
60 cm
108 cm
inflated 11,5”
Tire pressure
50 Psi (3,5 kg/cm2)
Maximum capacity
120 kg
Maximum speed
12 km/h
Maximum grade climbable / front
8 degrees
drive down
25 km
Turning radiu
1.24 m
Maximum load capacity
150 kg
Ground clearance
90 mm
2*40 Ah
24V 5AMP
“Intelligent”, electromagnetic
Anti-tip wheel
Two anti-tip wheels
400 W
Weight without battery
73 kg
Weight with battery
95 kg
* The actual driving range varies depending on surface and conditions in which the power wheelchair
will be operating.
Electromagnetic Interference (EMI)
The power wheelchair may be susceptible to electronic interference (EMI) which is
interfering electromagnetic energy emitted from sources such as radio stations, TV
stations, amateur radio transmitters (HAM), two-way radios and mobile phones. The
interference (from radio wave source) can cause the power wheelchair to release its
brakes, move by itself or move in unintended directions. It can also permanently damage
the wheelchair control system.
The intensity of EM energy can be measured in Volts per meter (V/m). Each power
wheelchair can resist EMI up to certain intensity. This is called “immunity level”. The
highest immunity level, the better control provided. Current technology provides at least
20 V/m immunity level which gives optimal protection against common sources of EMI.
Following the below rules will help you to avoid unintended brake release or wheelchair
movements which can cause serious injury.
1. Do not turn on any personal communication devices such as CB radios or mobile
phones when the wheelchair is turned on.
2. Avoid transmitters such as radio or TV stations and try not to come close to them.
3. In case of unintended movement or brake release,
turn off
the wheelchair
(providing it is possible and safe).
4. Do not add any accessories/components or do not modify the wheelchair without
consultation with a distributor as it may make the wheelchair even more
susceptible to radio wave sources.
5. All the incidents related to EMI should be reported to the producer – please,
indicate also the location of wave source.
Always turn off your power wheelchair immediately (providing it is
possible and safe) when you experience any of the following situations:
1. unintended wheelchair motion,
2. unintended and uncontrollable direction of movement,
3. problems with brakes and brake system.
The immunity level of 20 V/m protects against influence of most popular sources of
electromagnetic waves but you should always remember the basic rules of safety outlined
Driving outdoor:
The wheelchair is not designed to move in the street traffic.
Do not use the wheelchair during rain or snow, when the temperature is higher than
30°C or lower than 0°C.
Do not use the wheelchair on soft, uneven, unprotected surfaces such as grass,
gravel, sand or decks, beside a river or a lake.
Do not use the wheelchair for off-road driving.
If possible, do not use the wheelchair outdoor at night.
Make sure that there are no obstacles behind you when you drive backwards. We
also recommend setting the speed at the slowest position.
Avoid sudden stops and turns, always try to take turns gently.
Always keep your arms on the armrests and feet on the footrest while driving.
Do not stand while driving. Do not lean from side to side, or pick up objects from
the ground while the power wheelchair is in motion.
Do not try to climb curbs higher than 7cm.
The power wheelchair is not designed to navigate the stairs. Always use the ramps
or elevators.
Do not try to drive over a hole/gap wider than 10 cm.
Driving over uneven terrain:
Navigating over uneven terrain can be more risky. It is important to observe the
following safety rules. Failure to follow them could result in serious injury.
Do not try to climb a hill which grade exceeds 10°.
Do not move backwards while going up/down the hill.
Do not use the wheelchair on soft, uneven, unprotected surfaces such as grass,
gravel or sand.
When you drive down the slope, choose the slowest speed.
Do not get in or off the wheelchair if it stands on a slope (in order to get in/off the
wheelchair you need to place it on flat surface).
Always climb or descend the hills perpendicular to the slope.
Control console assembly
1. Ignition key
2. Charging socket
3. Front light switch
4. Left / right blinker
5. Emergency lights
6. Horn button
7. Speed adjustment
Forward/backward driving lever
If you want to move forward, pull the lever on the right side. If you want to go back, pull
the lever on the left side. If you wish to stop release both levers leaving them in neutral.
The power wheelchair is fitted with a clutch
mechanism allowing the driver to switch off the
electric power and to manually push the
The clutch lever is located at the back of the
scooter on its right lower side.
If you wish to turn off the electric drive
move the clutch lever upwards (position A) as shown. Remember that when the
electric motor is not working the electromagnetic brakes are also not functioning
If you want to reactivate the electric drive move the clutch lever downwards
(position B).
Do not turn off the electric power if there is no one to assist you in pushing the
wheelchair. Do not turn off the power when the wheelchair is on an incline as it could roll
off and this could lead to an injury.
Always stand behind the wheelchair when you turn off the electric drive. Do
not turn off the drive while seating in the wheelchair. When you put the
wheelchair in the desired location be sure to switch the electric drive back on.
Anti-tip wheels
Anti-tip wheels are mounted to the frame at the rear of the wheelchair. The
wheels protect the chair from falling back especially when climbing an inclined surface.
Do not remove or modify the anti-tip wheels in any way, as this may result in fall
and injury.
Control console angle adjustment
Before setting the angle of the control panel, remove the key from the ignition. Do not
ever adjust the angle of the control panel while driving.
Your wheelchair is equipped with a lever that allows adjustment of the angle of the
control panel.
If you want to change the angle of the control panel, pull
the lever while changing the angle of the panel. See the
illustration above.
Seat height adjustment
To change the seat height:
Remove the seat from your wheelchair. Press and hold the seat lock lever to unlock
it, then unscrew and remove the seat from the wheelchair.
Remove the front cover.
Adjust the height of the element retaining the seat to the desired position.
Insert the locking pin and secure the seat retaining element as shown in the figure
Replace the cover and reinstall the front seat.
Backrest adjustment
To adjust the angle of the backrest:
Pull up the lock lever blocking the backrest to unlock it
as shown in the figure below,
Adjust the backrest in the desired position.
Release the lever to once again lock the backrest.
When adjusting the angle of the backrest always lean back
against the backrest.
Do not drive the wheelchair when the backrest is heavily tilted back.
Swivel seat
This feature is intended to facilitate the transfer from and to
the wheelchair.
To rotate the seat, pull up the plastic lever on the side of the
seat (A). Turn the seat in the desired direction (B or C). Sit
on the seat and turn around on the seat to its original
position and release the lever. Make sure that the seat is
blocked in place after the release of the lever – the seat does
not move in any direction.
It is very important to properly block the seat in place as its rotation during the
operation of the wheelchair could lead to driver's fall and injury.
Adjustment of the headrest
You can adjust the height of the headrest so that it corresponds to your needs and safety
In order to change the setting of the headrest (height of the headrest) press button shown
on figure B1 at the same time changing the height of the headrest.
Adjustment of the width of the armrest
To adjust the width of the armrests:
Remove the screw (A) located at the back of the seat frame.
Move the armrest to the desired position and tighten the screw.
Adjustment of the angle of the armrest
Under each armrest there is an adjustable screw allowing for adjustment of the angle of
the armrest; turn the screw downward if you wish to lower the armrest and tighten it
(clockwise) if you want to raise the armrest.
Ignition switch
Picture of rabbit indicates maximum speed; the picture of turtle indicates the slowest
speed. If you wish to increase the speed please turn the speed indicator in the direction of
the picture of a rabbit and if you wish to reduce the speed turn the indicator toward the
picture of the turtle.
In order to activate right/left blinker, push the switch to relevant position. At the end of
the manoeuvre, set the switch to the neutral position.
In order to sound the horn press the klaxon.
Light switch
Press the light switch to turn on the lights.
Press again to turn them off.
Charging the battery
The wheelchair is equipped with maintenance-free lead-acid batteries. The batteries are
sealed so they do not require any other activities apart from charging.
Always use the 3-pin earthed plug and earthed socket.
Do not use an extension cord or an adapter in order to avoid the risk of fire, electric
shock and injury.
Never use the same socket for other purposes while charging the batteries.
Always use the original charger supplied with the wheelchair.
To charge the batteries safely follow the following guidelines:
Park the wheelchair as close to a grounded socket as possible.
Turn off the wheelchair and take the key out of the ignition switch.
Plug the charger into the charging socket.
Plug the charger into the earthed socket.
Turn on the charger (red light means that you should immediately charge the
batteries, yellow light indicates that the battery is semi- charged, green light – the
battery is fully charged). The optimum charging time is 8-14 h.
New batteries must be charged for longer than 12h. Prior to recharging the battery
must be fully discharged.
When charging is completed, turn off the charger and unplug it from the electric
socket. Then take the plug out of the charging socket. Finally, put the cover onto
the charging socket.
If you do not intend to use the wheelchair for longer time, remove both batteries
and store them in dry and cool place.
Avoid completely discharging the battery.
If you use a wheelchair every day recharge your batteries daily for 8-14h.
If you use a wheelchair once a week, recharge your batteries once a week for 1214h.
Do not charge the batteries for more than 24 hours.
You cannot additionally recharge the battery (i.e., connect them for a period
shorter than a full charge cycle), as this may lead to the destruction of the
battery or reduce its life.
Store batteries fully charged.
If you do not regularly use a wheelchair in order to maintain battery life, charge the
batteries at least once every two weeks in a full charge cycle.
Replacing the batteries
If you wish to remove the batteries:
Turn off the power and remove the key from the ignition.
Remove the seat.
Gently lift up the front cover so that you can disconnect the wires from the
Remove the tape securing the battery.
Carefully disconnect the power cables from the battery.
Remove the battery.
To install the battery:
Insert the battery in its proper seat.
Connect the red wire to the jack marked with a “+”.
Connect the black wire to the jack marked with a “ – ”.
Fasten the tape securing the battery.
Connect the headlight wires.
Replace the front cover and seat.
Never replace the battery yourself (to a different battery than that supplied by the
factory with your wheelchair).
If the battery is damaged or needs replacing report this to your distributor. Do not
throw it away; leave the faulty battery with your distributor.
In order to prevent short circuit and battery damage, never touch any of the
contacts with metallic objects.
In order to obtain maximum performance of the batteries it is necessary to fully charge
each of the batteries before their first use. The battery shall be charged up to 90%. Next
you must discharge the battery by moving the wheelchair, preferably close to the site
where you can easily charge the batteries again. After discharging the battery completely
you should recharge it fully (8 – 14 hours). After about 4 - 5 charging cycles the battery
will have reached 100% of its capabilities.
Operating instructions
Before you get onto your power chair check:
that the seat is set at the correct height,
that it is properly locked,
if the the control panel is properly located,
to see if any other parameters are adjusted according to your needs,
to see if the horn and light work,
Plan your route in such a way as to avoid obstacles impossible to surmount
for the wheelchair.
Never get out of the wheelchair or never get onto the wheelchair without first
making sure that the key is removed from the ignition switch to prevent unexpected
motion from inadvertently contacting the drive lever.
Using the wheelchair
Before getting onto the wheelchair make sure that the key is not in the
Turn the seat in such a way so as to facilitate getting in.
Perform the transfer to the seat.
Once again turn the seat into the correct position and make sure that it is in
locked position.
Sit back and fasten your seat belts. Check the angle of the backrest so that
you have proper visibility and are able to drive the chair efficiently.
Make sure your feet rest firmly on the footrest.
Propelling the wheelchair
Keep both hands on the steering wheel and your feet firmly placed on the footrest
such a position gives you the best possible control over your chair.
Fuse cutting off the power
The wheelchair is fitted with a fuse, which cuts off the power if the key is left in the
ignition (turned to “on” position) for a period longer than 20 min. Even though the
power supply will be cut off the system supplying power to the light shall be fully
operational. If you want to restart wheelchair turn the key to "off" and then back to
"on" thus normal power will be restored to the wheelchair.
Maintenance and repair
In order to ensure that your wheelchair will give you years of trouble-free
operation, the user should regularly inspect and maintain the wheelchair and deliver
it to the authorized distributor for annual comprehensive maintenance and
User advice
1. Protect the control panel against strong impact.
2. Protect your wheelchair from long-term exposure to high and low temperatures
and humidity.
3. Keep the control panel and the steering clean.
4. Protect your wheelchair from direct contact with water.
5. Always keep the frame and upholstery clean. Use soft, dry cloth to clean the
main frame and the upholstery. Do not use any abrasive. While cleaning, do not
use any detergents directly on the controller, battery charger or other power
6. When cleaning do not put the charger, battery into water or fire or dissemble
them on your own.
7. Every three months, lubricate the wheel axles.
8. Use only the battery supplied with the wheelchair. Should you wish to replace
the batter please contact your distributor.
9. Charge the battery regularly. Always make sure the charger is properly
connected to the socket. Do not disconnect the charger by pulling on the cord.
10. Check the lever operation. If you find any damage do not try to fix it yourself
just contact the authorised service centre.
11. Check the cabling (i.e.: nips, abrasion, cuts, kinks, dents, decolouration of the
outer housing, brittle spots). If you find any damage (tear), contact your
authorized service centre.
12. Make sure that the control panel is mounted properly.
If you find any problems or abnormalities with the motor, charger, control panel or
frame damage contact the nearest authorized service centre.
If there are any problems or irregularities in the operation of your wheelchair,
contact an authorized service centre that will help you determine further course of
mdh sp. z o.o.,
90-349 Łódź,
Ks. W. Tymienieckiego 22/24,
Phone: +4842 6748384, Fax.+48426365221
mdh sp. z o. o.
90-341 Łódź
Fabryczna 25
Phone: +48 42 674 16 89
e- mail: serwis@ mdh.pl
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