Chasswheel FOUR X URBAN Owner's Manual
OWNER’S MANUAL
In matters that are unclear, we request that you contact us
Read the manual carefully.
Chasswheel Oy
Myllyharjuntie 6
71800 SIILINJÄRVI
Tel. +358 207 559 220
Fax: +358 207 559 221
Valued FOUR X URBAN user,
We would like to welcome You on becoming a user of the FOUR X URBAN. We thank You for Your
trust and we are sure that Your new wheelchair will meet Your expectations. When designing and
producing FOUR X URBAN, our main goal is to give every person an opportunity to move and
improve their quality of life. Your FOUR X URBAN electric wheelchair guarantees a smooth drive for
You on town streets as well as off-road. You do not have to plan Your routes, considering where You
can access with a wheelchair and where You cannot, as You can move wherever You like. FOUR X
Urban overcomes successfully all slopes and is able to easily climb over curbs. Snow, mud, roots of
trees are no longer an obstacle on Your journey.
By following our user manual, You will learn to use Your FOUR X URBAN electric wheelchair safely
and it will become a long-term technical aid for You.
We wish You a pleasant mobility experience with FOUR X URBAN.
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WARRANTY
Chasswheel Oy offers a two- (2) year warranty for CHASSWHEEL FOUR X URBAN's casing, the base
of the electric wheelchair, its riding and steering devices, seat and motors. The warranty does not
cover batteries and charging devices. The frame of every wheelchair has a data label with an
individual serial number.
The warranty covers defects derived from the regular usage of the wheelchair. This warranty does
not cover general wear and tear or the damages derived from the misusage of the wheelchair or
inproper maintenance.
The warranty does not cover the results of the damages derived from overweight or incorrect
programming. General wear and tear appears e.g. on wheels, rubber, plate springs, swivel joints and
sliding surfaces. General wear and tear can also be considered to be louder motor noise. The
warranty does not cover indirect damage caused by any other damages.
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DECLARATION OF CONFORMITY
The manufacturer:
Chasswheel Oy
Myllyharjuntie 6
71800 SIILINJÄRVI
Finland
Declares that the CHASSWHEEL FOUR X URBAN is class B electrically powered wheelchair
conforms to the following standard requirements
EN 12184: 2006
EN 1041: 1998
EN ISO 14971: 2007
EN12182: 1999
ISO 1999: 1997
ISO 6440: 1985
ISO 7176-1: 1999
-2: 2001
-3: 2001
-4: 1997
-5: 1986
-6: 2001
-7: 1998
-8: 1998
-9: 2001
-10: 1998
-11: 1992
-14: 1997
-15: 1996
Risto Heikkinen
Managing Director
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CONTENTS
1 RECOMMENDATIONS FOR ENSURING SAFETY .......................................................................... 7
SAFE DRIVING .......................................................................................................................... 7
SAFE USAGE AND MAINTENANCE ............................................................................................... 9
PERMANENT LABELLING OF THE WHEELCHAIR ......................................................................... 10
2 EQUIPMENT AND ITS USAGE ................................................................................................. 12
2.1 USAGE OF THE STEERING DEVICE ...................................................................................... 12
2.2 DYNAMIC DX-REM420 ........................................................................................................ 13
2.3 DYNAMIC DX-REM550 ........................................................................................................ 18
Joystick .................................................................................................................................. 19
Status display .......................................................................................................................... 20
Battery charge display .............................................................................................................. 21
Battery alarms ......................................................................................................................... 21
System status ......................................................................................................................... 22
Using Buddy Buttons with the remote ........................................................................................ 22
Steering the wheelchair with the remote .................................................................................... 23
Switching the wheelchair off .............................................................................................. 23
Locking/unlocking the wheelchair ...................................................................................... 23
Locking the wheelchair ........................................................................................................ 23
Unlocking the wheelchair .................................................................................................... 23
Switching the lights on and off ........................................................................................... 24
Switching the warning blinker on and of ............................................................................ 24
Operating the electrical adjustment options ...................................................................... 24
Which symbols are displayed and what they mean ........................................................... 24
Entering adjustment mode .................................................................................................. 25
Selecting and actuating adjustment options ...................................................................... 25
Changing from setting mode to drive mode ....................................................................... 26
Further adjustment options ................................................................................................ 26
Deactivating programming mode ....................................................................................... 26
Changing the screen brightness .......................................................................................... 27
Setting the time ................................................................................................................... 27
Display / hide time display .................................................................................................. 28
Changing the screen backround .......................................................................................... 29
Error diagnosis ..................................................................................................................... 29
Error codes and diagnosis codes ......................................................................................... 30
2.4 R-NET JSM ........................................................................................................................ 32
2.2 ADJUSTMENT OF BACKREST, HEADREST, ARMREST AND FOOTREST .................................... 37
ADJUSTMENT OF BACKREST .................................................................................................... 37
MANUALLY ADJUSTED BACKREST ............................................................................................. 37
ELECTRICALLY ADJUSTED BACKREST ....................................................................................... 37
ADJUSTMENT OF HEADREST .................................................................................................... 37
ADJUSTMENT OF ARMREST ...................................................................................................... 38
MANUAL ADJUSTMENT OF FOOTREST ...................................................................................... 39
2.3 OTHER DEVICES AND ACCESSORIES ................................................................................... 40
USAGE OF THE SAFETY BELT ................................................................................................... 40
LIGHTING DEVICE ................................................................................................................... 40
TIRES ..................................................................................................................................... 40
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BATTERIES ............................................................................................................................. 40
CHARGING OF THE BATTERIES ................................................................................................ 40
FUSES .................................................................................................................................... 41
3 DRIVING THE WHEELCHAIR .................................................................................................. 42
MOVING INTO THE WHEELCHAIR ............................................................................................. 42
DRIVE PRACTICE ..................................................................................................................... 42
BALANCE ADJUSTMENT ........................................................................................................... 43
GOING UP STEPS .................................................................................................................... 45
4 FREEWHEELING ................................................................................................................... 45
5 TRANSPORTATION OF THE WHEELCHAIR .............................................................................. 46
6 MAINTENANCE OF THE WHEELCHAIR ..................................................................................... 47
DAILY CHECKS ........................................................................................................................ 47
WEEKLY CHECKS ..................................................................................................................... 47
CLEANING OF THE WHEELCHAIR .............................................................................................. 47
MEASUREMENT OF TYRE’S AIR PRESSURE ................................................................................ 48
CHANGING OF A WHEEL .......................................................................................................... 48
DISASSEMBLING OF THE SEAT AND BATTERIES ........................................................................ 48
INSTALLATION OF BATTERIES ................................................................................................. 49
PROGRAMMING ....................................................................................................................... 50
CHANGING THE LIGHT BULBS .................................................................................................. 50
ELECTRICAL DISTURBANCES IN THE WHEELCHAIR’S WORK....................................................... 50
7 STORAGE OF THE WHEELCHAIR ............................................................................................ 51
8 TECHNICAL DATA OF FOUR X URBAN .................................................................................... 52
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1 RECOMMENDATIONS FOR ENSURING SAFETY
Before starting to use the wheelchair, read this manual very carefully. Here You will find good
instructions on how to use the wheelchair in a flexible and safe manner. The manual also offers
advice on how to act in problematic situations. In case of having additional questions, feel free to
contact the supplier of the wheelchair.
The wheelchair can be used indoors as well as outdoors, meaning that it helps You to overcome
obstacles appearing in normal conditions as well as allowing You to move on uneven grounds.
The wheelchair can be used by people whose weight does not exceed 125 kg and who are capable
of attaining the correct usage of the device. Users must possess the physical abilities necessary for
the usage of the steering system as well as steering devices.
SAFE DRIVING
Do not use the wheelchair if You feel that it is not safe to be used. Safety of its usage depends on
the wheelchair’s condition, environmental conditions and the user’s skills to drive it. Check the
condition of the wheelchair at least once a week.
The wheelchair has movable parts such as wheels,
rods and swivel joints. Consider the possible
dangers that might be caused by them, especially
when using the wheelchair near children and pets.
Make sure that they are kept at a safe distance from
the wheelchair. The parts that may cause harm
have been marked with symbols next to them.
Avoid loose clothing or objects that may get caught in the movable parts.
If You are aware that the steering device or any other essential part requires repairing, then do not
use the wheelchair and take it to be repaired at once.
If pushing or towing the wheelchair, the brakes have to be disengaged.
Movement on slopes can be dangerous if parking brakes have been released.
The wheelchair is four-wheel drive. Practise is required for attaining the correct driving technique.
Take care when manoeuvring in places where wheels may slide, e.g. a slope covered with grass.
The wheelchair has an adjustment tilt in space system which upon the correct usage improves the
safety and ability to overcome obstacles. It is essential to learn how to use that system correctly.
Before driving the wheelchair, make sure that the seat is positioned correctly. Please see the section
„Adjustment of weight distribution“.
Driving the wheelchair on a slope may be unstable if the weight distribution has not been adjusted
correctly. One needs to be extra careful adjusting the weight distribution whilst on a slope.
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The wheelchair’s capability to get up a hill depends on the degree of slope. It may be dangerous to
exceed an incline of 20° or driving on surfaces that are uneven, more than 150mm (look at the
drawings below).
Always use low speed and avoid making forceful steering movements when driving on a slope or on
uneven ground.
Driving positions for uphill and downhill.
Obstacle 150mm
Driving in water is prohibited due to the danger of damaging the wheelchair’s electric parts.
When driving the wheelchair in dim or dark conditions, driving lights should always be used as they
allow You to see obstacles or dangers in Your path. It is also very important for other road users to
see You.Releasing the steering lever (Joystick) will stop movement of the wheelchair. In a dangerous
situation, the wheelchair can also be stopped by unplugging its electric current from the steering
device (Joystick).
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Before using and during usage, check the batteries’ charge. Always charge the batteries if they are
empty or low. The standard charging device of the wheelchair does not allow the batteries to be
overcharged.
The functionality of the wheelchair can be disturbed by electromagnetic fields which can be caused
by e.g. mobile phones and other similar devices. The wheelchair itself can disturb other
electromagnetic devices from functioning, such as shops’ security systems.
Do not leave the wheelchair exposed to direct sunlight. The wheelchair’s metal parts and surfaces,
such as the seat and arm-rests, overheat easily. Also avoid leaving the wheelchair out in cold
weather or frost.
If You have used the wheelchair in damp conditions, be sure to take care of drying it, e.g. putting it
into a warm room. Do not leave the wheelchair outside or in a cold/damp room. Failing to follow the
beforementioned advice can cause damage to the wheelchair.
SAFE USAGE AND MAINTENANCE
Factory programmed parameters have been installed into the wheelchair’s control system and they
are suitable for most users. Some of these parameters can be changed. Programming can only be
carried out by an autherised specialist who has knowledge of the wheel chairs control systems.
Wrong programming can be hazardous and damage the control systems.
The wheelchair’s control system should be exposed to extreme conditions as little as possible.
Damage to the wheelchair’s cables causes a safety issue that should be immediatley reported to an
autherised technician.
Check the condition of the tyres on regular basis. It is essential for steering as well as for durability
of the wheels to have correct tyre pressure. The measurement of tyre pressure has been described
in the section „Maintenance of the wheelchair“.
To avoid the usage of the wheelchair without permission, use the locking key (blue). It is hazardous
if the wheelchair is used by an unauthorized person.
For transportation, always attach the wheelchair to the body of the car. It is strictly prohibited to sit
in the wheelchair whilst being transported.
Repair and alteration works are prohibited without supplier’s authorization.
The allowed maintenance works that can be carried out by the user are described in section
“Maintenance of the wheelchair.“
If the wheelchair is being maintained or adjusted, then the control system must be switched off.
Only gel batteries can be used in order to avoid the risk of electrical damage.
If electric tools are used near the batteries, then one has to consider the possibility of a short-circuit.
Usage of open fire is prohibited due to a danger of explosion. Battery box is not meant to be used
for storage of other objects. The wires to the batteries are not to be disconnected by oneself. In
case of problems, please contact an autherised technician.
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PERMANENT LABELLING OF THE WHEELCHAIR
Data of the wheelchair’s classification.
Maximum incline is 20 degrees
Maximum angle is 150 mm
Located on the casing’s cover in the rear part.
Instruction for connecting batteries
Located on the inside of the casing’s cover.
The size of the main circuit breaker
Located in the battery box, on the cover of the fuse holder.
Using other than gel batteries is forbidden –warning.
Located on the cover of the protection box.
80A
Identification plates can be found on the left side of the frame.
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The symbol of brake’s release
D = brakes are locked, one can ride the wheelchair
N = brakes are released, the wheelchair can be towed
Located on both shafts on the side of the brake’s
protection box
NB! Read the label, located on the right and left side of
the lifting frame
Located on the side of the seat frame
Risk of finger trapping
Located on the right and left side of the lifting frame
Do not push the wheelchair from the back rest
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2 EQUIPMENT AND ITS USAGE
2.1 USAGE OF THE STEERING DEVICE
The steering device consists of a steering lever (Joystick) and panel. Underneath the steering lever
is the charging device’s interface and data transmitting cable which is connected to the steering
center underneath the seat. The wheelchair is available with three different kind of steering system
modules: Dynamic DX-REM420 or DX-REM550 and R-NET JSM.
Steering lever or Joystick
The speed and direction of the wheelchair is adjusted by the steering lever (Joystick). The further
the lever is pushed forward, the faster the wheelchair moves. Releasing the steering lever will stop
the wheelchair and will connect the parking brakes. The steering lever can be used also for
adjusting many additional actions. The standard buttons for the steering lever are suitable for most
users. However, one can also have other options or have a button made by special order. Do not
replace the button with self-contructed details as this may cause a dangerous situation.
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2.2 DYNAMIC DX-REM420
ON/OFF – switch
Steering panel DX-REM420
Buttons and screen are located on the steering panel. The
function of buttons are described in more detail in this chapter.
If the steering device has been switched on, the lights will
appear on the screen and the screen will display a function to
show that it has been switched on. The symbols displayed on
the screen are described in more detail below.
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The Seating Functions
The Lights
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Battery charge indication
Other indications
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