MDH W 4028 User manual

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W 4028 CRUISER POWER WHEELCHAIR
USER'S MANUAL
Edition 09.2013
mdh sp. z o.o.
90-349 Łódź, ul Tymienieckiego 22/24
tel. [phone]
fax: [phone]
www.mdh.pl
[email protected]

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TABLE OF CONTENTS
1.General rules.............................................................................................................................3
2. User’s safety..............................................................................................................................5
3. Driving outdoor.........................................................................................................................8
4. Driving over the hills and on uneven terrain........................................................................... .8
5. Technical parameters................................................................................................................9
6. Battery and charging................................................................................................................11
7 Comfort adjustment.................................................................................................................12
8. Maintenance and cleaning......................................................................................................14
9. Specification............................................................................................................................16
Please, read the instruction carefully before the first use of the wheelchair. If any part of the text is
not clear or if you need any further information, please, contact your dealer.
The wheelchair is designed according to the latest trends and technology. Its construction enables
optimal adaptation to user’s needs. Solid and durable construction, innovative solutions and reliable
safety systems guarantee maximum comfort of use.
In order to ensure smooth wheelchair operation and safety the wheelchair should be regularly
checked at a service point. In case of any doubts or needs, please, do not hesitate to contact your
local dealer or service point.
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.
Not following the instruction may result in vehicle damage or serious injury.

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1. GENERAL RULES
1. Always read the user’s manual carefully before the first use.
2. If you mark any problem or improper work of the power chair, contact the distributor.
3. Always follow the instructions outlined in the user’s manual, traffic regulations and other laws of
your country.
Battery
Always make sure that the batteries are loaded, if they are not, charge them as soon as possible.
Charging
Never use the extension cord.
Never us the same socket for other purposes while charging the batteries.
Tyres
1. Always check the tyre pressure.
2. Always check if the tyres are not damaged.
3. Always check if all the screws are well tightened.
4. Never change the tyres on your own. In case of need, contact your distributor.
Anti-tip wheels
1. Never remove the anti-tip wheels –they are crucial for user’s safety.
2. Always check if the anti-tip wheels are not damaged and if all the screws are well tightened.
Frame
1. Always check if the frame is not damaged.
2. Always check if all the parts are properly assembled and all the screws well tightened.
Capacity
1. The maximum capacity is 180 kg. Never exceed the maximum capacity as it may lead to wheelchair
damage and cause injury.
2. Do not carry any passengers. Never carry any pets, luggage or other items placed on the knees.
Never put things close to the driving lever.
Front basket
1. All the items placed in the basket must not limit visibility.
2. Max basket capacity is 5 kg.
Control console
1. Always make sure that the control console is blocked.
2. Always make sure that the lever which allows to adjust control console position is blocked.

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Getting onto and off your power chair
Getting onto and off your scooter require a good sense of balance. When you getting on and off, help
of your personal assistant may be required. In order to prevent injury when getting onto and off your
scooter, please, follow the below rules:
turn off the power of your wheelchair;
ensure that your wheelchair is not in freewheel mode;
the seat armrests can be flipped up to facilitate getting on and off the wheelchair;
reduce the distance of you and your power chair;
make sure you seat safely and comfortably before turning on the power.
WARNING! In order to prevent the power wheelchair from tipping/causing injury, try to position
yourself at the back of the wheelchair seat.
WARNING! Avoid using your armrests for weight bearing purposes –the wheelchair may tip and
cause injury.
WARNING! Avoid putting all of your weight on the floorboard - the wheelchair may tip and
cause injury.
Starting the power wheelchair
After turning on the power wheelchair:
1. Always make sure that the LED control indicators light.
2. Always make sure that all the lights work properly.
3. Always make sure that the horn button works properly.
Speed adjustment
1. Always make sure that the speed can be reduced and increased.
2. Always adjust the speed to the driving conditions.
3. Always slow down when you go down the slope.
4. In order to reduce the speed, move the regulation knob so that it
points the picture of the turtle.

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2. USER’S SAFETY
Do not carry any passengers.
Do not drive after drinking alcohol.
Consult your physician to check if your medications impair your driving abilities.
Never try to lift or push the power chair.
Never try to disassemble the structural parts of the power chair (you can only remove the
parts described in this user’s manual as removable).
Do not use any personal communication devices such as CB radios, cellular phones.
Do not tow a trailer.
Do not drive across a slope.
Never use the wheelchair when you feel you are physically unable to do it.
Driving conditions
1. Always slow down when driving on uneven, quaggy
surface.
2. Do not use the wheelchair on soft, uneven,
unprotected surfaces such as grass, gravel, sand or
decks, beside a river, lake –it may lead to wheelchair
tipping.
3. Do not use the wheelchair on wet or icy surfaces.
4. Never use the wheelchair when you do not know the driving conditions.
Reaching and bending
Do not bend, lean, or reach for objects if you have to pick them up
from the floor by reaching down between your knees. Movements
such as these may change your center of gravity and the weight
distribution of the wheelchair. This may cause your power chair
to tip and lead to personal injury.
Never stand when you are using the wheelchair.
Driving up the incline
1. Never drive up the incline which is slippery, quaggy, too slant.
2. Never stand up, bend or shake the power wheelchair.
3. In order to avoid injury, do not drive the wheelchair in reverse
when climbing and/or downgrading.
4. If the incline is too big, your wheelchair will stop moving.
5. When you drive down the slope, always slow down.

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Additional instructions
1. The battery condition meter indicates battery capacity. If the battery capacity is low, please, stop
using the wheelchair and load the batteries.
2. If the control LED indicator lights when you are using the wheelchair, it means that the wheelchair
does not work properly. Turn off the wheelchair and contact your distributor.
3. If you notice that the wheelchair overheats, there is a smoke coming from the wheelchair or you
notice any other unusual operation of the wheelchair, turn it off and contact your distributor.
EMI/RFI
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. unexpected break release or problems with brakes
The immunity level of 20 V/m protects against influence of most popular sources of electromagnetic
waves but you should always remember about the basic safety rules outlined above.

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Practice before operating
Before driving the vehicle on everyday basis, you should find an open area such as a park to
practice maneuvers .
We recommend that when you practice driving you should be accompanied by an assistant.
Always make sure that the vehicle is set off before getting in or getting out of the vehicle.
Always check that the speed setting is chosen according to your experience and skills.
While practicing, keep the speed at the slowest position.
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.
Then, practice “S” turns.
Finally, practice driving backwards.
Please, mark that while driving backwards the vehicle always moves slower regardless of
the speed setting.

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3. 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, lake.
Do not use the wheelchairs 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.
Do not stop suddenly, always try to make turns gently.
Always keep your arms on the armrests and feet on the footrest while driving.
Do not try to climb curbs higher than 7cm.
Do not try to drive over a hole/gap wider than 10 cm.
4. DRIVING OVER THE HILLS AND 0N UNEVEN TERRAIN
Driving on the hills and other uneven terrains is more dangerous than driving on flat surfaces.
Following the below rules is essential to avoid accidents and serious injuries.
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 stays 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.

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5. TECHNICAL PARAMETERS
Wheelchair parts
Control console assembly
control console
assembly
armrest
anti-tip wheels
battery cover
rear lights
lever for seat tilt
adjustment
mirror
basket
lever for adjustment of
control console assembly
front light
Front light
front turn signal
indicator
front bumper
lever for seat
adjustment (forward
–backward)
seat
headrest
ignition
switch
charging
socket
battery condition
meter
speed
adjustment
light switch
horn button
handrail
lever –driving
backward
lever –driving
forward
left/right blinker
control console assembly
lever for swivel
seat adjustment

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Ignition switch
off
on
Speed adjustment
Picture of rabbit indicates maximum speed, the picture
of turtle indicates the slowest speed.
Horn button
Press the horn button to activate the horn.
Light switch
Press the light switch to turn on the lights.
Press again to turn them off.
Battery condition meter
Battery condition meter indicates the battery condition. If the red
light indicator flashes, you should immediately charge the batteries.
Right/left blinker
In order to activate right/left blinker, push the switch to relevant position.
Forward/backward driving
Pull the left lever to drive backwards. Pull right lever to drive forward.
Release the both levers to stop the wheelchair.
turtle
rabbit
Driving
backward
Driving
forward

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6. BATTERY & CHARGING
Battery
The wheelchair is equipped with maintenance-free batteries. The batteries are sealed so they do not
require any other activities apart from charging.
Attention!
Always use the 3-pin earthed plug and earthed socket.
Never use the extension cord.
Never use the same socket for other purposes while charging the batteries.
Always use only one charging socket while charging (the socket placed on the battery or on the
control console assembly).
Always use the original charger supplied with the wheelchair.
Do not charge the batteries in humid places, conditions. Never stop or suspend charging if the
batteries are not completely charged. The charging should last till the batteries are fully charged.
Attention!
When charging the new battery, the charging time should be 24 h. If you do not intend to use the
wheelchair for longer time, remove both batteries and store them in dry and cool place.

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When charging the batteries, please, follow the below rules:
1. Place the wheelchair close to the earthed socket.
2. Turn off the wheelchair and take the key out of the ignition switch.
3. Plug the charger into the charging socket.
4. Plug the charger into the earthed socket.
5. 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).
6. If you charge the new battery for the first time, the charging time should be 24h. You should
charge the battery till the green LED indicator light activates, no longer than 24h.
7. 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.
Battery –assembly/removal
1. Never change the batteries on your own.
2. If you need to change the batteries, you should contact your distributor.
3. In order to prevent battery damage, never touch the contacts with metallic items.
7. COMFORT ADJUSTMENT
Attention!
Never adjust the seat height by yourself! If you need to regulate the seat height, contact your
distributor.
Swivel seat
Charging socket
Turn off

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You can swivel the seat (360°) and block it in four different positions, every 90 °. The lever which
allows to regulate the seat positions, is located under the seat, on the right side. In order to change
the seat position, raise the lever , choose desired position and release the lever.
Armrest adjustment
Raise the armrest when getting on/off the wheelchair.
Move the armrest to its original position when driving.
Backrest adjustment
Release the blockade and adjust the backrest position to
individual needs. Never adjust the backrest while driving.
Removing the seat
Fold the seat, remove the pin and then remove the seat.
Seat assembly
Put the folded seat into the frame. Unfold the seat.
Seat adjustment
You can move the seat backward/forward. Pull the lever and move the seat. Release the lever and
block the seat –move the seat backward till you hear the “click” sound.
swivel seat lever
blockade
frame

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Removing the armrests
Loosen the two blocking screws placed at the back of the
seat. Pull the armrests.
Assembling the armrests
Put the armrest into the frame. Loosen the screw, adjust the
armrest and tight the screw.
The right and left armrest may be adjusted separately with the
use of screws placed at the back of the seat frame. If you want
to adjust one armrest, loosen the screw placed close to it,
adjust the armrest and tighten the scew.
8. MAINTENANCE AND CLEANING
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 inspection. If you find any problems or abnormalities while using
the wheelchair, please, contact the nearest authorized service point.
1. After wheelchair regulation, check or repair, always make sure that all the wheelchair parts are
properly installed and they work properly.
2. Mechanical adjustment and regulation should be performed only by authorized person. Improper
adjustment /regulation may damage the wheelchair and cause injury.
3. Never touch the electric connections –in this way you can avoid power surge which may damage
the wheelchair.
Battery
If you do not intend to use the wheelchair for a month or longer, charge the batteries, remove them
and store them separately in a dry and cool place. When storing the batteries, you should charge
them every three months.
Not following the instructions outlined in this manual may lead to battery damage. If you are
charging the batteries and they still are not charged, contact your distributor to change them.
bloking screws

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Frame
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 connectors.
Keep the wheelchair away from direct contact with water.
Avoid long exposure of the power wheelchair to extreme cold, hot or humidity.
Anti-tip wheels
Regularly check the condition of anti-tip wheels –check their condition and screws.
Brakes
Regularly check the condition and operation of brakes.
Motor brush
If the motor brush is worn, you should change it. Regularly check its condition.
If you use the wheelchair on difficult, uneven terrain, you should control and replace the brush every
3 months. If necessary, consult your distributor.
Storage
The power wheelchair should be stored in a dry place, free from temperature extremes. Always
remove the batteries when the wheelchair is stored. Charge the batteries before storing, store them
separately (recommended temperature of storing 20 °C).
Remember that like most electrical equipment, your power wheelchair is susceptible to damage.
Avoid damp environment of any kind. If you store the wheelchair in inappropriate places, the frame
may easily become rusted and the electronic components may be damaged. The recommended
temperature of storing the wheelchair without batteries is - 15 °C to 40 °C
NOTE: If you detect that the there are problems with the motors, battery charger, the controller or
damage to the power chair frame, it is recommended that you contact the nearest authorized service
point.

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9. SPECIFICATION
Model no
W4028 Cruiser
Length
1480 mm
Width
670 mm
Front wheel
13’’
Rear wheel
13’’
Weight capacity
180 kg
Motor
2400 W max
Max speed
15 km/h
Range*
30 km
Turning radius
1650 mm
Battery
2x55 AH
Charger
220 V AC 24Vx6AMP
Admissible tyre pressure
42 Psi (3kg/cm2)
Brakes
Electric brakes
Anti-tip
Two rear, anti-tip wheels
Ground clearance
100 mm
Suspension
Full suspension (4 suspenders)
Weight (without battery)
98 kg
Max terrain inclination
10 °(180 kg)
*range depends on the terrain /conditions in which wheelchair is used
SERVICE
02-495 Warszawa
ul. Kaczorowska 13
tel. [phone]
tel. [phone]
e- mail: [email protected]