Lille Viking User Manual

General Information

Thank you for choosing an Etac product. To prevent damage during installation, handling, and use, it is important to read this manual and keep it for future reference. You can also find it on www.etac.com, where you can select your language via the "International" and "Local websites" links. This site also provides additional product documentation, such as prescription information, purchasing guides, and overhaul instructions.

Our combination overview provides quick information on drive units and mounting kits compatible with your specific wheelchair. The combination overview is available at www.etac.com.

Information on how visually impaired individuals can access the manual is available in our pre-sales guide at www.etac.com.

In this manual, the 'user' refers to the person seated in the wheelchair, and the 'assistant' refers to the person helping the user.

[info] To prevent injury or personal damage during handling and use, this manual must always accompany the unit.

The middle section of this manual contains important information for the user and can be removed.

Product Description

The Lille Viking (hereinafter referred to as the 'unit' or 'product') is an assistant-controlled add-on unit providing extra power for manual wheelchairs. The Lille Viking is compatible with suitable mounting kits for various manual wheelchairs.

Intended Use

The Lille Viking is intended to specifically and directly contribute to the functionality of a manual wheelchair in accordance with its intended purpose, by providing electric assistance when the attendant pushes or brakes the wheelchair.

User Group

The primary user group for the unit is assistants who push wheelchairs. Secondary users include wheelchair users being pushed and clinicians/technicians who set up the unit.

Intended Environment

The unit is intended for indoor and outdoor use on even surfaces and simple terrain. It must not be exposed to saltwater. The product has attachment points for transport in motor vehicles.

Area of Use

The unit is intended for both short-term and long-term use. It is designed for use on intact skin and is intended for renovation and reuse.

Expected Lifespan

The unit's expected lifespan is 5 years. Preventive maintenance is recommended, as lack of maintenance can reduce the unit's lifespan. For complete information, see www.etac.com.

Indications

The unit is indicated for use when the combined load of the user and equipment (adapted seat, ventilator, communication aid, etc.) makes the wheelchair difficult to push and/or brake.

Contraindications

Contraindications are based on known and potential contraindications identified in the unit's risk assessment and include:

• Cognitive ability to understand the use of the unit.

Warnings

Warnings describing a risk element for a specific action or product setting are found in the relevant sections.

• [warning] Switch off the unit before transferring the user to/from the wheelchair.
• [warning] Do not use a defective product.
• [warning] Be aware that the unit is heavy to lift.

Declaration of Conformity

The unit complies with MDR (EU) 2017/745. It has been tested and complies with EN 12184 and ISO 7176-19.

Lead Batteries

Approved by the International Air Transport Association (IATA); Packing Instruction 806, Special Provision A67.

Information Before Purchase

Information before purchase is available at www.etac.com.

Adverse Events

If an adverse event occurs related to the use of the equipment, it must be reported to the local dealer and national authorities within a reasonable time. The local dealer will forward the information to the manufacturer.

Customization

Actions outside the instructions and settings in this manual will void the CE marking according to MDR 2017/745 and invalidate the warranty.

Combinations

Combinations of Etac units and units from other manufacturers are presented in the combination list at www.etac.com.

Programming

The drive unit's electronics are programmed by Etac. Do not change parameter settings.

EMC

Although the Lille Viking drive unit has been tested and approved, there is a risk that:

• the motor unit may be affected by electromagnetic fields, e.g., from mobile phones.
• the motor unit may affect other electronic devices, e.g., store alarm systems.

Warranty

A five-year warranty is provided against material and production defects. See current terms at www.etac.com.

Batteries supplied by Etac have a one-year warranty against material and production defects. Read terms at www.etac.com.

Miscellaneous

Etac continuously improves its products. Therefore, we reserve the right to modify products without prior notice. Dimensions indicated on drawings or other materials are for guidance only. We are not liable for printing errors or incomplete information.

Symbols and Labels

Symbols in the Manual

[warning] Warning, caution, or limitation

[info] Useful tips and advice

Symbols on the Unit

For symbols on the unit, refer to page 9 of this manual.

Product Label

Product information:

• Product: XXXXXXXXXXXXXXX
• Article Number: REF XXXXXXXXXX
• Serial Number: SN XXXXXX
• Production Date: YYYY-MM-DD
• Barcode: GS1-128 compliant (GTIN-14 and serial number)
• Manufacturer: Etac Supply Center AB, Långgatan 12, SE-334 33 Anderstorp
• Markings: Medical CE marked equipment, MD, CE
• Max User Weight: Max 150 kg

* The product's production date can be read from the barcode on the product. The number '11' appears in parentheses under the barcode. The number combination after these parentheses is the production date.

Product Description Overview

The overview shows the Lille Viking. Models and attachments vary in appearance. The overview shows the location of individual components relative to each other, as well as their designations.

Steering Box

Components include: 1. Speed regulator, 2. Lock wheel, 3. Steering box mount, 4. Throttle regulator, 5. Spiral cable.

Front Attachment

Components include: 21. Drawbar, 22. Telescopic rod, 23. Crossbar, 24. Angle piece, 25. Crossbar lock lever, 26. Front bracket.

Motor

Components include: 27. Handle (strap), 28. Transport securing device, 29. Battery box, 30. Battery contact, 31. Motor unit, 32. Handle-battery box, 33. Battery fuse, 34. Battery snap lock.

Rear Attachment

Components include: 6. Mounting bracket, 7. Lock lever - attachment arm, 8. Attachment arm, 9. Mounting bracket/pressure part, 10. Gas strut, 11. Rear bracket, 12. Hoop stop, 13. Gas spring, 14. Release handle.

Product Label

Item no. UBXXXXXXX, TWXXXX, TWXXXX, Product Label (35).

Mounting

General Mounting

Before mounting the Lille Viking, the wheelchair should be adapted to the user's needs regarding seating comfort and driving characteristics. Consider that the wheelchair will be used outdoors when mounting leg rests and anti-tip devices. In some cases, adjustments may be necessary, such as moving the drive wheels in their mounts to provide sufficient space under the chair.

The wheelchair's caster wheels must not be smaller than specified in the combination agreement.

Information on which chairs can be combined with the Lille Viking and which mounting kit applies can be found in our combination overview at www.etac.com.

Each mounting kit includes specific mounting instructions detailing special points for that particular installation. The following mounting instructions describe the general steps to consider in addition to the information provided with the mounting kits.

Front Attachment - Front Bracket

1. Mount the front brackets as far forward on the frame as possible, with the holes facing down.
2. If the brackets interfere with caster wheel rotation, move the brackets slightly backward or turn them with the hole facing up.
3. Generally, mount brackets on the inside of the frame for a better overview when mounting the crossbar, angled mounting tube, and drawbar.
4. On narrow chairs, it may be necessary to place the brackets on the outside to provide enough space for the crossbar.
5. Install the tube protectors first, as they protect the tubes and ensure a secure and stable attachment. It is helpful to secure the tube protectors with tape for easier handling.

[info] During initial mounting, it is beneficial to fasten screws loosely. This makes adjustment easier before final tightening. When fastening brackets, ensure equal load on both nuts. Do not overtighten screws to the point of damaging the tubes.

Front Attachment - Crossbar

1. With the brackets in place, mount the front crossbar with the telescopic rods in the holes.
2. Before tightening the screws, adjust the telescopic rods so the distance is equal on both sides.
3. Ensure the telescopic rods insert at least 50 mm into the crossbar's tube before tightening the screws.
4. Check that the telescopic rod has enough clearance in the crossbar to move freely during mounting/disassembly.
• If there is enough space but the telescopic rod does not insert 50 mm into the crossbar, you can either mount the brackets on the inside or use longer telescopic rods.
• If there is not enough space, you can either mount the brackets on the outside or cut one of the telescopic rods.

Front Attachment - Angle Bracket and Drawbar

1. With the crossbar mounted in the brackets, slide the angle bracket in from underneath through the coupling tube.
2. If the vertical tube is too long or high and conflicts with, for example, the tilt function, it can be cut above the mount. If it is too short, it can be replaced with a longer/higher model.
3. Slide the drawbar into the horizontal part of the angle bracket and lightly fasten the screw.
4. Ensure the rounded and beveled part is mounted as shown in the illustration.
5. If the drawbar interferes with the chair's footrest (is too long forward), the part protruding forward of the angle piece can be cut off.

Motor Mounting

1. Slide the motor unit with the battery together, and connect the battery contacts (see page 6).
2. Slide the Lille Viking onto the drawbar.
• If the release handle is mounted, slide the motor part onto the drawbar until it "clicks" into place.
• If the release handle is not mounted, gently slide the motor part onto the drawbar until it meets resistance. Manually open the drawbar snap lock and slide the motor part into place.
3. Slide the motor unit forward so that the center of the drive wheels aligns with the center of the wheelchair's drive wheels. This may not always be possible, but the deviation should be as small as possible, less than +/-5 cm.
4. Ensure there is a 3-4 cm gap on each side of the motor unit to avoid contact with other parts of the wheelchair. Pay special attention to the clearance with the cross on cross-frame chairs. Also, ensure the motor unit is centered longitudinally. If not, adjust the brackets in the front attachment.
5. If there is insufficient length under the chair for the motor unit, this can be resolved by following these three steps in sequence:
• Unscrew the battery box handle.
• Turn the crossbar forward.
• Turn the angle bracket forward.
• Adjust the height of the angle bracket so that the drawbar slopes slightly upward at the front, which helps it handle unevenness and obstacles better.
• The crossbar can be mounted in several positions, providing further options for positioning the drive motor. If the angle piece is not high enough, the crossbar can be turned downwards.
6. Re-check that there is sufficient clearance around the motor unit after the final adjustment. Tighten all screws.

Release Handle Mounting

The release handle has three positions: Driving, Mounting, and Disconnected.

Rear Attachment

The rear attachment can vary in design depending on the specific chair it is mounted on. Detailed mounting instructions are provided with each mounting kit.

After the Lille Viking is mounted under the chair, the rear brackets can be mounted.

1. Insert the mounting brackets into the pressure part.
2. Insert the hoop stops into the mounting brackets.
3. Mount the assembled parts into the attachment arms.
4. The lower edge of the pressure part should be approximately 48 cm above the floor.
5. Tighten the lock levers on the attachment arms.
6. Adjust the pressure part laterally, ensuring the mount is centered and vertical.
7. Connect the rear attachment to the Lille Viking. The entire assembly can now be adjusted.
8. Place the pressure part in the mounting position, with the release handle pointing horizontally backward. Tighten the screws.
9. Lift the release handle so the Lille Viking is clear of the floor (approx. 2-3 cm).
10. If the Lille Viking does not stop in the lifted position, adjust by lowering the pressure part's attachment so the handle is higher.
11. Push the release handle down to the driving position so the Lille Viking is pressed against the floor. Continue pushing the handle down to the driving position, pressing the Lille Viking against the floor.
12. The gas spring should be approximately half compressed when the lever is in the lowest position.
13. If the motor unit does not stop at the lowest position against the floor, adjust by raising the pressure part's attachment so the handle is lower.
14. Tighten the hoop stops.
15. Ensure all screws are tightened and check all functions after mounting the Lille Viking to the wheelchair.

Steering Box Mounting

The steering box on the Lille Viking is mounted on the wheelchair's handlebars using the supplied bracket and connected to the drive unit via the spiral cable.

1. Mount the steering box bracket onto the tube in front of the handlebar.
2. Mount the steering box onto the bracket by inserting the lock tab into the bracket's hole. The throttle lever should point backward.
3. By changing the steering box's angle, adjust the throttle regulator's grip for opening.
4. Tighten the lock wheel to secure the steering box. Ensure the throttle lever is free and cannot snag on anything, such as a rubber handlebar grip.
5. Connect the steering box to the motor using a 6-pin plug. Rotate the connector so the arrow marking points towards the lock and push it in.
6. When dismounting the steering box, press the safety latch and pull the connector out.

User Handbook

This section of the manual (User Handbook) is intended to be detached and always accompany the drive unit. It contains important user information.

Symbols

Symbols used on the product:

• [anchor] Anchoring point
• [speed] Max speed 6 km/h
• [weight] Max user weight 150 kg
• [charger_outlet] Battery charger outlet
• [joystick_outlet] Joystick outlet

[warning] Do not use a control box other than the one supplied.

Battery Indicator

The Lille Viking is equipped with a battery indicator showing the current power supply. The indicator shows a red bar (LED indicator) moving in 10 steps from right to left.

• When the battery is fully charged, the rightmost LED indicator lights up (100% charge).
• As the battery level drops, the next LED indicator to the left lights up. Only one lights up at a time.
• When the second LED lamp from the left blinks, it indicates that the battery is in the reserve power range (30% charge).
• When the two leftmost LED lamps blink alternately, it indicates that the battery is nearly empty (20% charge).
• [warning] Check that the charger's LED lamp is green to indicate that the batteries are fully charged.

Power Save Mode

If the drive unit is switched on without being used, it enters power save mode after 5 minutes. Turn the speed regulator back to OFF, and then restart the steering box (ON) to exit power save mode.

Starting the Drive Unit

1. Turn the key on the main power switch clockwise/counter-clockwise to turn the power on/off. The main power switch is marked with a red and a yellow circle.
2. Turn on the speed regulator on the steering box.
3. The indicator lamp will light up green, indicating that the drive unit is switched on and ready for use.

Release Handle

[warning] Risk of pinching fingers when using the release handle to activate the Lille Viking.

The release handle has three positions:

• Driving position: The drive unit is pressed down against the surface, ensuring the motor drives the wheelchair forward and maintains braking effect.
• Mounting position: The release handle is adjusted horizontally. The drive unit rests against the surface without pressure.
• Disconnected position: The release handle is adjusted upwards. The drive unit lifts up and hangs freely, not affecting the wheelchair.

Transport in Vehicle

The Lille Viking is collision tested and approved according to ISO 7176-19. The test was performed with a securing device (UNWIN_WWR/ATF/K/R) for the wheelchair and a three-point seatbelt (907523 Klippan Safety AB) for the user, along with a battery holder for the Lille Viking.

Etac recommends the following sequence:

• The user is moved to a car seat and uses the vehicle's three-point seatbelt during transport. The drive unit is then placed in the trunk or back seat securely, so it cannot tip or roll.
• If a wheelchair approved as a vehicle seat according to ISO 7176-19 is used, the Lille Viking can remain mounted on the wheelchair. The Lille Viking must be secured to the car with fastening straps approved according to ISO 10542.

Requirements:

• The Lille Viking must be secured with separate straps according to:
• Lille Viking Low Bow: Fasten the straps around the hoop on the marked surfaces (illustration 1).
• Lille Viking Flat Bow: Fasten the straps around the transport bracket (illustration 2).
• The wheelchair and user must be secured according to the wheelchair manufacturer's instructions.
• The release handle must be in the driving position.
• Turn off the power at the main switch.
• The "Transport Securing" accessory must be used.

Driving - Use

In addition to the instructions for the Lille Viking, read and follow the user instructions for the connected drive unit before use. This section describes only how to operate the drive unit, not how to handle the wheelchair. User manuals for Etac wheelchairs are available at www.etac.com.

• [warning] Check the wheelchair brakes and ensure they are released before using the drive unit.
• [warning] Risk of tipping! Always keep the anti-tip device activated.

• Choose a speed that feels safe and comfortable for you and the "passenger".
• Plan the drive to ensure a comfortable trip and experience for the "passenger".

Remember that the Lille Viking pulls the wheelchair forward. The wheelchair moves forward automatically when you use the throttle regulator. You only need to follow the wheelchair and steer it. The wheelchair stops immediately when you release the throttle regulator.

• If you take a break while driving, turn off the power by switching off the motor with the ON/OFF regulator.
• If you are parking or ending the drive, turn off the power using the main switch. Always park on a flat surface and use the wheelchair's parking brakes.
• Never try to hold the unit back.

[warning] Release the throttle handle in any uncertain situation.

[info] If the wheelchair needs to be maneuvered freely manually, set the drive unit to the disconnected position.

[info] Motor wheels may slip on slippery surfaces.

Driving - Overcoming Obstacles

• [prohibited] Do not attempt to overcome high curbs.
• Choose curbs that are low or sloped. Ensure the footrest does not collide with the ramp or curb.
• If there are no sloped curbs where you intend to drive, set the drive unit to disconnected mode.

Driving - Uphill and Downhill

• Be aware that driving uphill, downhill, or on a side slope affects the user's seating position.
• Reduce pressure on the throttle regulator when driving downhill so that the drive unit brakes.
• If the motor is set to a low speed and requires more power, for example, on a steep incline, turn the speed regulator to gain more power.
• Do not release the throttle regulator completely, as the motor will stop and the wheels will slip on the surface.
• Be aware that the chair will move faster and increase speed when the surface becomes flat again.
• When driving up ramps, the wheelchair should be driven forward.
• When driving down ramps, the wheelchair should be reversed.

Disassembly

Disassembly of Drive Unit

The drive unit can be easily detached from the wheelchair. Ensure the power is switched off before starting disassembly.

1. Press the spiral cable connector latch and then pull the steering box connector out of the motor.
2. Set the release handle to the mounting position.
3. Loosen the gas strut by pulling the snap lock and angling it up towards the back of the wheelchair.
4. Push the release handle towards the motor and roll the chair forward.
5. The drive unit is now detached from the wheelchair.
6. Once the drive unit is detached from the wheelchair, lift the drawbar. The drawbar connects to the gas strut at the rear of the chair.

Disassembly of Front Attachment

1. Loosen the lock lever on the crossbar.
2. Push the telescopic rod into the crossbar and tighten the lock lever.
3. Move the crossbar aside and lift it away.
4. You can now pull the entire front bracket and drawbar forward between the wheelchair's footrests.

Disassembly of Rear Attachment

To detach the rear bracket, the drive unit must first be disconnected.

1. Loosen the lock levers on the rear attachment arms and lift out the entire mounting hoop. The remaining parts are the side attachments. These do not affect the wheelchair and can be left in place.

Disassembly of Steering Box

1. Loosen the lock wheel and lift off the steering box.

Removing Battery Box

The batteries can be detached to make it easier to move the drive unit.

1. Turn the main power switch counter-clockwise.
2. Disconnect the battery connectors.
3. Pull the snap lock on the left side of the drive unit between the battery unit and the drive unit, and separate the battery unit and drive unit from each other.

Storage, Cleaning, and Maintenance

Storage

If the drive unit is to be stored mounted on the wheelchair, it should be in the mounting position, resting on the surface. If the drive unit will not be used for an extended period, such as over winter, the batteries should be fully charged and then charged approximately every 3-4 weeks. The Lille Viking should be stored in a dry place at a temperature above +5°C.

Cleaning

Clean the Lille Viking by wiping the product with a damp cloth using a mild cleaning agent without abrasives and with a pH value of 5-9, or with 70% disinfectant alcohol.

Waste Sorting

The product must be sorted according to national regulations. The following parts can be sorted for disposal as described below:

• Batteries: Deliver for battery recycling.
• Motor and steering box: Deliver for electronics recycling.
• Mounting brackets: Sort for metal recycling.

Maintenance

Maintenance should be performed as needed. Refer to the checks below.

Etac recommends that the product undergoes a major inspection/service when needed, depending on its condition. Suitable occasions include when the product gets a new user or is reconditioned. The reconditioning instructions for the Lille Viking contain a checklist of items to be checked.

Checks

Once per month:

• Check tire tread depth (min. 1.0 mm).
• Cleaning.
• Check that mounting brackets are properly secured.
• Check the release handle - operating position and disconnected position.
• Check the throttle regulator function.
• Check that wires and connectors are not damaged.

Troubleshooting

[warning] Do not attempt to repair the unit yourself. Service or repair must be performed by qualified personnel.

Troubleshooting Scheme

Fuse Check

Check if the fuse is intact, as shown in the images.

• 1. Fuse is intact.
• 2. Fuse is damaged and needs replacement.

Contact Mobility Aid Central

Contact the mobility aid central for further assistance. When contacting them, you will be asked for the drive unit's serial number or ID number. It is also beneficial if you can provide information on how the indicator light blinks, as these are error codes that guide what the problem is. For example: 4 blinks, pause, 1 blink, pause. Reconditioning instructions with indicator light codes are available at www.etac.com.

Technical Data

* Please note that the surface and slope can significantly affect the braking distance.

** The indicated driving range is a theoretical comparison measure according to ISO 7176-4. It is intended for comparison between different drive units, not as an absolute driving range. The actual driving range depends on factors such as terrain, total weight of the wheelchair and user, driving style, battery condition, temperature, etc.

Contact Information

UK Representative: Etac Ltd., Unit 60, Hartlebury Trading Estate, Hartlebury, Kidderminster, Worcestershire, DY10 4JB, +44 121 561 2222

CH Representative: Promefa AG, Kasernenstrasse 3A, 8184 Bachenbülach, CH, +41 44 872 97 79

Etac Supply Center AB: Långgatan 12, SE-334 33 Anderstorp, +46 371 58 73 00, info@etac.com, www.etac.com