Medema MC 1124 User manual

Service Manual MC 1124
2433-2007-S ver. 1.0.2 - January 2020 GB
medemagroup

Service manual 2433-2007-S 2 of 98 Version 1.0.2/2020
Medema Production A/S
Medema Danmark A/S
Enggårdvej 7
Snejbjerg
DK-7400 Herning
Denmark
Telefon: [phone]
Mail: [email protected]
For this product You can expect to nd the following documentation:
• User manual
• Service manual
• Spare parts list
• Presell information.

Service manual 2433-2007-S 3 of 98 Version 1.0.2/2020
Medema Production A/S
Content
Introduction............................................................................ 5
Intended occupant................................................................. 6
Help for the visually impaired .............................................. 6
FSN (Field Safety Notice)...................................................... 6
Symbols.................................................................................. 7
Warning! ................................................................................. 7
Joystick .................................................................................. 7
Seat and backrest ................................................................. 8
Flame resistance ................................................................... 8
Declaration of conformity..................................................... 9
Medema A/S Warranty........................................................... 10
Part names ............................................................................. 11
Part names MC 1124 - Spinalus............................................ 12
Serial number......................................................................... 13
Driving the MC 1124 .............................................................. 14
Safe servicing ........................................................................ 18
Tool list ................................................................................... 19
Parts Joystick R-net.............................................................. 20
Using the Joystick R-net....................................................... 21
Mode ....................................................................................... 23
Settings menu........................................................................ 24
Safety check........................................................................... 28
Troubleshooting .................................................................... 29
LED errors.............................................................................. 31
Programming ......................................................................... 32
Maintenance........................................................................... 33
Batteries ................................................................................. 35
Battery disposal..................................................................... 35
Charging................................................................................. 36
Checking the battery poles................................................... 37
Replacing batteries ............................................................... 37
Light........................................................................................ 39
Bag holder.............................................................................. 40
Servicing the MC 1124........................................................... 40
Checking the pivot wheel ..................................................... 41
Checking the drive wheel ..................................................... 42
Checking the disengagement............................................... 43
Checking the brakes ............................................................. 44
Footplate/footrest.................................................................. 45
Spinalus back - settings ....................................................... 56
Spinalus-2 settings................................................................ 57
Stepless adjustment of seat depth ...................................... 58
Height adjustment of armrest............................................... 59
Adjusting the headrest.......................................................... 67

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Swing-away tting................................................................. 67
Adjusting the ION seat.......................................................... 72
Replacing the motor gear ..................................................... 73
Replacement of coal in the motor........................................ 74
Replacing hoist / tilt .............................................................. 75
Fuses ...................................................................................... 76
Joystick R-net and the power module................................. 77
Motors and the power module ............................................. 77
Securing to vehicle oor with belts..................................... 78
DAHL docking system .......................................................... 80
Mounting the docking spear................................................. 81
Mounting the drive wheel ..................................................... 83
Footrest, electric adult.......................................................... 84
Footrest, manual adult.......................................................... 85
Footrest actuator part ........................................................... 86
Mounting bracket for footrest .............................................. 87
Footplate ................................................................................ 88
Central footplate, adult, electric........................................... 89
Central footplate, child, electric........................................... 90
Central footplate adult, manual............................................ 91
Central footplate, Junior manual ......................................... 92
Swing-away joystick mount (adult)...................................... 93
Technical data........................................................................ 94
Seat angles............................................................................. 97

Service manual 2433-2007-S 5 of 98 Version 1.0.2/2020
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Introduction
This manual contains servicing instructions for the MC 1124 .
The Service Manual is a supplement to our Spare Parts Cata-
logue and User Manual.
You are now the owner of an electric mobility wheelchair devel-
oped for use indoors as well as outdoors. It is what is called a
Class B vehicle according to the European standard EN 12184.
You are now the owner of an electric mobility wheelchair developed
for use indoors as well as outdoors. It is what is called a Class B vehi-
cle according to the European classication of electric wheelchairs.
MC 1124, and any assistive product are designed for safe travel for at
least 10 years, up to a max. of 5,000 hours, provided it is serviced and
safety-checked every third year, corresponding to 1500 hours of op-
eration. The service must be carried out by an authorised workshop.
IMPORTANT! For safety reasons it is of the utmost importance
that the servicing and safety check intervals are complied with,
as this minimises the risk of brake failure and short-circuits in
the wiring, which could generate heat and cause a re.
If help is required with troubleshooting, Medema A/S is always happy
to provide telephone assistance. If the problem seems to be an elec-
trical fault that prevents the MC 1124 from working, please tell us the
error code. This can be found on the battery indicator on the control
panel. Read more about this in the section on Troubleshooting.
Please also have the MC 1124 serial number handy when con-
tacting Medema A/S.
Medema A/S is not responsible for any damage or injuries
caused by inappropriate or unsafe use of the MC 1124.
If you have any questions that are not answered directly by this
manual, you are always welcome to contact us. See contact
information on page two.
NB: Errors and omissions excepted. Specications subject to change.
Medema A/S also reserves the right to update the service manu-
al in line with any modications or improvements to the product.

Service manual 2433-2007-S 6 of 98 Version 1.0.2/2020
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Intended occupant
The intended occupant of the wheelchair is a person with lim-
ited or no ability of working themselves.
The wheelchair is equipped with a joystick control which makes
it usable for an occupant who only has functionality in the n-
gers. It can be driven with only one hand either left or right.
The occupant must be able to see in order to register trafc sig-
nals and other road users when driving in trafc. The occupant
can be deaf and/or speechless.
The occupant must have a cognitive ability to understand the
operation of the joystick and its buttons and icons.
The maximum occupant weight is 150 kg.
Help for the visually impaired
If you have difculty reading small print in the user manual, we
recommend that you visit our website, where you can read this
manual in PDF format. You can enlarge the PDF manual on
your PC monitor to suit your needs and preferences.
If you nd it difcult to understand the manual and have general
questions about the product, please feel free to contact us. You
can nd our contact info on page two of this user manual.
You can nd manuals for all our products on our web page
www.medema.dk. Or contact Medema A/S, and we can send
the manuals in a mail for you. Find the contact information on
page two in this manual.
FSN (Field Safety Notice)
All information concerning safety can be found at www.mede-
ma.com, which is always updated with the latest safety informa-
tion. In the event of important safety-related changes, we will
notify our customers directly (FSN).

Service manual 2433-2007-S 7 of 98 Version 1.0.2/2020
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Symbols
Used in the manual to indicate sections describing situations
where extra care is required owing to the risk of personal injury.
Used to indicate sections on electromagnetic compatibility
(EMC).
Warning!
For safety reasons the vehicle must not be lent to persons who
are not completely familiar with it. The vehicle is designed for
one person only.
The MC 1124 has been designed for users weighing max. 150
kg.
Joystick
The joystick control box must not be exposed to extremes of
temperature or kept in a damp environment for extended peri-
ods.
The joystick control box must not be subjected to heavy knocks.
Do not switch off the control box while driving, except in an
emergency, as this may damage the electronics.
For cleaning, use a damp cloth with slightly soapy water.
Do NOT allow any water or moisture to enter the control box.

Service manual 2433-2007-S 8 of 98 Version 1.0.2/2020
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Seat and backrest
The cover of the seat and backrest can be washed in the wash-
ing machine. ALWAYS follow the washing instructions on the
back of the seat pad / backrest.
Flame resistance
The Mini Crosser seat’s ame resistance has been tested in
accordance with DS/EN 1021-2:2014 Furniture - Assessment of
the ignitability of upholstered furniture - Part 2: Ignition source
match ame equivalent.
Warning
The seat may become very hot if exposed to direct sunlight.
Similarly, the seat will become very cold if it is exposed to cold
temperatures, e.g., frost.

Service manual 2433-2007-S 9 of 98 Version 1.0.2/2020
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Declaration of conformity
Medema A/S hereby declares that:
Machine: Electric mobility wheelchair
Use: Transport of walking-disabled people
Model No: MC 1124
Complies with the Medical Device Directive 93/42/EEC
The product is accredited according to standard DS/EN 12184
- Electrically powered wheelchairs, scooters and their chargers -
Requirements and test methods.
The product is risk analysed in accordance with the harmonized
standard DS/EN ISO 14971:2012 Medical devices - Application
of risk management to medical devices.
The Mini Crosser can, for a fee, be taken to the nearest dealer
for disposal in accordance with current environmental regula-
tions.
Manufacturer: Medema A/S
Address: Enggårdvej 7, DK-7400 Herning
Tel. [phone]
Date: 31.01.2018 Signature: _____________________
Managing director Finn Dose

Service manual 2433-2007-S 10 of 98 Version 1.0.2/2020
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Medema A/S Warranty
1:
There is a 2-year warranty, with the exception of worn parts
such as tires, hoses, fuses, light bulbs, bushings and brake
pads.
2:
If you want to make a claim for a part under the warranty, it
must be intact. The warranty will be void if the product has been
removed or appears to have been mishandled.
3:
There is a 5-year warranty against breakage and corrosion of
the undercarriage.
4:
For the warranty to cover batteries, the charger used must be
sold by Medema A/S.
The fabric, type and serial number must be indicated on the
warranty specication, otherwise, warranty coverage may be
denied.
5:
Items returned under a warranty claim must be suitably pack-
aged to prevent damage during transport. Items damaged
during transport due to poor packaging will not covered by the
warranty.
6:
The warranty does not cover freight costs.
7:
The warranty requires inspection according to the intervals
specied in the technical specications. Service and mainte-
nance must be carried out by Medema authorised profession-
als.

MC
1124
2017
Service manual 2433-2007-S 11 of 98 Version 1.0.2/2020
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Part names
The part names given below refer to the descriptions later in the
instruction manual.
Disengagement
lever. Both sides of
the vehicle.
Pivot wheel
Central wheel
Anti-tilt wheel
Footplate or footrests
Charging socket
Serial number on
vehicle.
Control panel
Armrest
Joystick
Swing-away
Headrest
Circuit Breaker
Adjusting the
headrest
Release for
leg supports
Eye for restraints
Pivot wheel
Eye for restraints

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Part names MC 1124 - Spinalus
The part names given below refer to the descriptions later in the
instruction manual.
Disengagement
lever. Both sides of
the vehicle.
Pivot wheel
Central wheel
Anti-tilt wheel
Footplate or footrests
Charging socket
Serial number on
vehicle.
Control panel
Armrest
Joystick
Swing-away
Headrest
Circuit Breaker
Adjusting the
headrest
Eye for restraints
Pivot wheel
Eye for restraints

MC 1124
2018
MC
1124
2017
Service manual 2433-2007-S 13 of 98 Version 1.0.2/2020
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Serial number
All wheelchairs have a serial number plate showing the year of
production, month and serial number. The same serial number
can also be found on page two of the User Manual.
Please quote this number when making inquiries about
servicing, spare parts, etc.
Position of serial number plate on vehicle.
Maximum user weight
Unladen weight of vehicle
incl. batteries and seat
Max. speed
Year of production Serial number

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Driving the MC 1124
MC 1124 is a modern device, specially developed to help you
achieve maximum mobility.
Before getting on or off the vehicle, you must check the follow-
ing:
• That the wheelchair is switched off.
• That the wheelchair is not disengaged.
• That the wheelchair and the seat you are moving to are both
stable.
• Avoid placing your full body weight on the footrests.
This may tip the wheelchair forwards.
If you are using the MC 1124 for the rst time, you should try
out all the day-to-day situations you are likely to encounter:
• inclines/declines,
• driving on rough terrain
• driving on sloping terrain.
You should practice these manoeuvres with your therapist or
other carer.
Warning!
The seat should NEVER be hoisted while driving on uneven
surfaces, slopes or up and down kerbs. The higher the seat is
raised, the more unstable the chair becomes.
Arms and legs
While driving, you must place your arms on the armrests and
your feet on the footrests.
Cables and leads
Always make sure that cables and leads from components like
the joystick are xed using ties.

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Changes of level
Never attempt to climb onto raised objects or kerbs higher than
7 cm. Always approach changes of level head on, with the front
and back wheels moving in a straight line. (See below.) This
reduces the possibility of tipping.
Note!
If your MC 1124 vehicle is tted with a docking system from
Dahl Engineering, note that the clearance is reduced to 5.5 cm.
Fig. 1 Fig. 2
Fig. 3 Fig. 4
Driving on hills
When driving on hills, you should try to keep the wheelchair
moving all the time. If you have to stop, start up again slowly.
When driving downhill, you must drive at the slowest speed.
If the MC 1124 starts moving faster than you want, stop it by
completely releasing the joystick. Carefully push the joystick
forwards again and carry on with care until you reach the bot-
tom of the hill.
Be aware that the stopping distance can be signicantly longer,
down hill, than on level ground.

6°
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10 tips for driving the MC 1124:
• Reduce the speed when turning corners and going downhill.
• Reduce the speed when driving on inclines. Maximum incline: 6° = 10%
• Reduce the speed when driving on a sideways incline. Maximum
sideways incline: 6°
• Avoid parking on snow and ice.
• Always park on a level (at) surface.
• Avoid driving on rough ground.
• Avoid driving on icy surfaces, or smooth surfaces (for example
snow or freshly mown grass)
• Never attempt to climb kerbs higher than 7 cm. If the wheelchair
has a docking system, the clearance is reduced to 5,5 cm.
• Avoiding driving over kerbs diagonally. There is a risk of tipping
over.
• Not to be used for towing other vehicles, etc.
Note!
Talk to your doctor if you are taking medicine that may affect
your ability to drive motorised vehicles.
Do not drive the MC 1124 when intoxicated. This applies to both
medicine and alcohol.

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Driving on public roads:
When driving on public roads, footpaths, pedestrian streets, car
parks, shopping centres, etc. you must make sure you adjust
your speed and distance for other users. At 7 km/h you must fol-
low the trafc rules applicable to cyclists. This also means that
your lights must be switched on during lighting-up time. (Op-
tional extra)
On footpaths, the maximum speed is 6 km/h. In this situation
you are regarded as a pedestrian.
Note!
You should assume that other road users cannot see you while
you are sitting in the MC 1124. So take great care and wait for
the road to clear before crossing.
Driving on stairs/escalators:
The wheelchair is not designed for use on stairs or escalators
and any attempt to do so may cause serious injury to yourself
and others.
Electromagnetic compatibility (EMC)
The MC 1124 satises the requirements for the use of wheel-
chairs in an environment with electromagnetic noise. There
may, however, be rare situations in which electromagnetic noise
can affect the MC 1124. Sources of such noise include radio
and television stations and amateur radio transmitters
If such equipment is being used close by, you are recommend-
ed to switch off the MC 1124.
If the MC 1124 starts making unintended movements, or if the
brakes are released, turn the MC 1124 off as soon as it is safe
to do so.
In rare cases an MC 1124 can set off shop alarms.
The control systems have been tested and meet the require-
ments of DS/ISO 7176-14 and DS/EN 12184.

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Safe servicing
• To avoid injuries to both the service engineer and the subsequent
user of the MC 1124, it is important to get to know the product
before servicing it.
• Be particularly aware of the following:
• The MC 1124 MUST be turned off on the main switch. If electrical
components are being serviced, the positive terminal on the bat-
tery MUST also be disconnected.
• If the voltage needs to be measured in the course of troubleshoot-
ing, take great care not to short-circuit anything.
• Take great care not to short-circuit the battery terminals.
• Be careful not to lift heavy parts such as the seat, battery and mo-
tor gear incorrectly or drop them.
• Use professionally maintained tools.
• Where lock nuts are used, NEW ones MUST be tted when the
MC 1124 is reassembled.
• Take care to t new cable strips in the same way as the old ones.
Make sure that no cables can be trapped by moving parts or stick
out in such a way as to catch on things.
• End every service by making sure that the product is roadworthy:
- Check that all the connectors are plugged in correctly.
- Check that all the mechanical parts are properly secured.

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Tool list
The following tools are needed to service the MC 1124:
• Circlip pliers
• Allen keys (mm)
• Allen deys 9/64 (inch)
• Box spanners, 7-17 mm
• Open-ended spanners, 7-17 mm
• Torx screwdrivers, 10/20/25/30 and 45 slut.
• Needle-nose pliers
• Side-cutting pliers
• Plastic hammer
• Set of punches
• Retractable knife
• Steel brush
• Water pump pliers
• Wire strippers
• Crimping tool
• Pliers for Molex 5556/5558 crimps
• Riveting pliers
• Small cable ties
• Multimeter
• Battery tester
• Tyre pressure gauge
• Tyre pump with Schrader valve
• Acid-free oil and grease
• Loctite (El-zink: 2400, A2: 2700, bearing security 6300)
• Cable ties
• Cable tie bar
• Circlip Pliers
• Screwdriver with vent

7
8
9
10
1
2
3
4
5
6
11
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Parts Joystick R-net
Joystick R-net
1 Start/stop button
2 Horn
3
Lights (Extra)
4 Prole-button
5
Indicator right (Exstra)
6
Speed selection
7
Hazard warning lights (Exstra)
8
Display
9
Mode-button
10
Indicator left (Exstra)
11 Joystick