Levo Summit EL User manual

Service Manual
LEVO Summit EL
Please read these Instructions carefully before servicing a customer wheelchair.
Failure to follow these instructions could result in injury to the customer and/or
damage to the wheelchair.
If you have questions or difficulties, please contact LEVO AG.
LEVO AG ANGLIKERSTRASSE 20 TEL [phone] [e-mail]
SWITZERLAND CH-5610 WOHLEN FAX [phone] WWW.LEVO.CH

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Content
1. Introduction ...................................................................................................................................... 1
1.1. Accident prevention & Safety ................................................................................................ 1
1.2. Adjustments – General Adviced............................................................................................. 1
1.3. Repairs – General Advice ........................................................................................................ 2
1.4. Tools & Torque values ............................................................................................................ 3
1.5. Important Notes ....................................................................................................................... 3
2. Safety Checks.................................................................................................................................... 5
3. Adjustments ...................................................................................................................................... 6
3.1. Seat angle / Wheel axle adjustment..................................................................................... 6
3.2. Rear wheel adjustment / Centre of Gravity......................................................................... 9
3.3. Seat height / Front wheel diameter.................................................................................... 10
3.4. Legrest support plug adjustment........................................................................................ 11
3.5. Seat depth adjustment .......................................................................................................... 11
3.6. Backrest angle adjustment.................................................................................................... 12
4. Replacement and Repair .............................................................................................................. 14
4.1. Rear wheel tire/inner tube replacement ............................................................................ 14
4.2. Tire inner tube repair............................................................................................................. 14
4.3. Gas Spring replacement ........................................................................................................ 15
4.4. Actuator replacement............................................................................................................. 16
4.5. Control Switch replacement ................................................................................................. 16
4.6. Control box replacement ...................................................................................................... 17
4.7. Battery replacement ............................................................................................................... 18
4.8. Legrest tube replacement ..................................................................................................... 18
5. Final Check...................................................................................................................................... 19

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6. Cleaning and Disinfection.............................................................................................................20
7. Version Management.....................................................................................................................21

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1. Introduction
Aside from the regular charging of the battery and normal cleaning, the LEVO Summit is
generally maintenance-free. To insure the safety and proper function of the wheelchair, it
should be checked at least once a year by trained service personnel.
This service manual is to be used as a reference as the authorized LEVO dealer to carry out
safety checks, service and repair on the LEVO Summit EL.
It is best to refer to both this service manual as well as the user manual.
1.1. Accident prevention & Safety
To help prevent accidents, please follow the instructions in both this and the user manual.
Be aware there are possible dangers as tests and modifications are carried out. Take suitable
preventive measures to insure the safety of yourself and others.
1.2. Adjustments – General Advice
Upon initial delivery, the safety check and adjustments should be made by the authorized
LEVO dealer. Some of the more simple adjustments might possibly be made by the user
depending on the capability of the user, family and friends. However, the following must be
done only by the LEVO dealer. This manual will instruct you on how to proceed.

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1.3. Repairs and fitting – General Advice
Service, fitting and repair works on the LEVO Summit should only be carried out by a
LEVO dealer.
•Repairs: For advice on all repairs, please contact your importer or LEVO directly (contact
information located on the front page of the User and Service Manuals).
•Major repairs: For all major repairs (e.g. bent or damaged frame) always replace
complete components. Never try to repair damaged components.
•Replacement parts: Factory replacement components should be used in all repairs; these
are available through your importer or LEVO directly. Parts list drawings can be viewed
at www.levo.ch.
CAUTION:
•Never attempt repair or maintenance work on any components of the standing
mechanism in the seated position. Always stand the chair up! Not doing so presents
a risk of accident!
•Always follow the instructions detailed in important sections of this service manual!

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1.4. Tools & Torque values
Following metric tools and torques are required to carry out maintenance work:
Screw size Screw Type Allen
wrench
Max. Torque
M4 Cylinder head screw 3 mm 2.5 Nm
Socket Set Screw 2 mm
M5 Cylinder head screw 4 mm 5 Nm
Oval-head screw 3 mm
Socket Set Screw 2.5 mm
M6 Socket Head screw 5 mm 9 Nm
Oval-head screw 4 mm
Socket Set Screw 3 mm
M8 Socket Head screw 6 mm 21 Nm
Table 1: Torque
•Allen Wrench - Do not use imperial (US standard) Allen wrenches as they may damage
screws
•Torque wrench 0 to 25 Nm
•Different standard tools.
Please note that the chair is delivered with a metric tool set.
1.5. Important Notes
•Lock-nuts which are removed should be replaced with new lock-nuts.
•It is preferred that thread locker (like blue LocTite) is utilized on screws/nuts.
•For replacement parts, use recommended components and spare parts supplied from
LEVO.

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•Always replace main components like frames, seat rails, armrests, backrests and legrest
parts. They are never to be modified or repaired.
•Be sure to follow the safety advice for any repairs on gas springs, actuators and
electronic parts.

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2. Safety Checks
At least once a year, the following safety checks should be carried out by the authorized
dealer. If any defect occurs, the user should immediately stop using the wheelchair until it is
repaired, checked and all safety rules assured.
1. Fold down the backrest and return to the upright position. Confirm that the locking
pins are seated and have correctly reset.
2. Inspect the frame and seating tubes for bends, cracks or breaks. Replace defective parts
if in need of repair.
3. Check the seat and backrest upholstery for excessive wear. Replace if necessary.
4. Check the condition of straps, belts and catches and replace, if necessary.
5. Check that all nuts, screws, joints and plastic parts are secured and in proper operating
condition.
6. Check that push handles are properly secured and the covers fit tightly.
7. Check brakes for proper holding efficiency.
8. Check that front casters and rear wheels rotate smoothly and that the axles are secure
with no wobble. Check the tires for proper pressure and the thread for excessive wear.
9. Check all electrical cables for breaks or abrasions.
10. Check all electrical connections for signs of corrosion.
11. Check that the battery and battery connections are clean. Check the battery capacity
and remind the customer to charge them every day. Especially if the batteries are old
and in declining condition. If necessary, replace the battery before returning the
wheelchair to the customer.
12. Check the standing mechanism and confirm it is operating safely.

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3. Adjustments
3.1. Seat angle / Wheel axle adjustment
The seat angle can be varied by adjusting the wheel axle vertically on the frame. Table 2:
Axle adapter position below shows the different front seat heights, the mount position (“P”)
and the corresponding seat angle. In standard configuration the seat angle is -4° backward.
By adjusting the height of the axle adapter it is possible to set the seat angle between -3°
and -8° to the rear.
These seat angles are obtainable without replacing any parts. However, depending on the
wheel size and the chosen seat height, it is possible that the wheel mount needs to be
flipped upside down (P5-P8). P1 & P5 are the most upper positions in respective
orientation, while P4 & P8 are the lowest positions.
P5
–
P1
–