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1. Introduction
1.1 Important safety notes – please observe carefully at all times
The twion is an add-on drive for wheelchairs. For safety reasons, it must only be operated by persons who
•have been instructed in its handling,
•can move and coordinate both hands or arms without major restrictions,
•have the physical and mental ability to safely operate the wheelchair with the twion wheels attached to it in all possible
situations and in the event of the twion wheels failing to work, the user is able to brake the wheelchair and stop safely.
A one-to-one instruction session on handling and operating the device is included in the scope of delivery. Please contact
your specialist dealer or Ulrich Alber GmbH agent to arrange for a training session. The instruction is free of charge.
If you feel a little unsure about how to handle your twion please contact your specialist dealer for advice.
In the event of technical faults, please contact your specialist dealer or the Alber Service Center (Tel: 0800 9096 250).
When operating the twion, observe the specifications of the wheelchair manufacturer (e.g. maximum slope, air pressure of
tyres etc.), and strictly adhere to the operating instructions of the wheelchair. Never exceed any of the specified limit values.
We recommend refraining from using the twion in locations that are exposed to strong electric fields.
In rare cases, the operation of the twion may interfere with other electrical devices such as anti-shoplifting barriers in depart-
ment stores.
You must not use the twion on escalators or moving walkways.
Similarly, combining the twion with accessories that have not been approved by Alber is also prohibited.
Therefore, do not start using the twion before you have been properly instructed in its operation by
an authorised specialist dealer or an agent of Ulrich Alber GmbH.
1.2 Proper use of the twion
Wheelchairs that are fitted with twion wheels are designed exclusively for transporting persons with a walking disability. Do
not attach any parts other than the accessories that have been approved for use by Alber. Equally, the device must not be
technically modified.
The twion must only be operated under the following conditions:
•Full compliance with the information, instructions and recommendations contained in this operating manual
•The device is only operated by a person who has been instructed in its use
•No technical modifications have been made to the device by the user or by any third party
An instructed person is a person who has been instructed in the operation of the twion and in his/her tasks and who has been
made aware of the possible hazards associated with improper use of the device. In general, this is the user of the wheelchair
to which the twion wheels have been fitted. The instruction session is provided by the authorised specialist dealer or by an
agent of Ulrich Alber GmbH. It is strictly prohibited for any uninstructed or unqualified persons to use the twion.
The twion must not be used for any purpose that contravenes the intended use of the device. This particularly applies to all
types of load transports such as the transporting of household objects or additional people. Proper use includes complying
with the information specified in this manual on carrying out safety checks and observing and adhering to the safety precau-
tions and hazard warnings for driving.
The use of the twion for any of the following purposes is deemed to be misuse by Ulrich Alber GmbH:
•Use or operation of the device that contravenes the instructions and recommendations in this operating manual.
•Exceeding the technical limits laid down in this operating manual.
•Technical modifications to the device.
•Attachment and/or use of parts and accessories that have not been supplied or approved by Ulrich Alber GmbH.