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Adjustments by qualified personnel
4) Insert the screw into the desired hole in the fork.
5) Install the caster wheel.
6) Screw on the nut with the washer and tighten the screw to 8 Nm.
INFORMATION: After adjustment, the left and right caster wheels must have the same vertical posi
tion in the caster fork.
7) After changing the front seat height, always check the caster wheel journal angle and adjust it if necessary (see
page 20).
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7.3.2 Adjusting the caster journal angle
The threaded axle in the caster wheel adapter should be perpendicular to the ground to ensure optimum rolling
behaviour of the wheelchair. The caster wheel adapter permits a continuous adjustment of this angle.
1) Loosen the hexagon socket screws between the caster journal bearing and the frame (see fig. 20, item 1).
2) Position the continuously variable caster journal bearing perpendicular to the ground.
3) Tighten the hexagon socket screws to 8 Nm.
→ The caster wheel axle on each of the two caster wheel adapters must be positioned vertically.
20
7.4 Adjusting the wheel locks
WARNING
Failure to verify brake function
Accident, user falls due to incorrect adjustment and improperly inflated tyres
► Check the correct distance between the wheel lock bolt and tyre (see the following section for details).
► Check the correct position of the wheel lock bolt relative to the tyre. The wheel lock bolt must cover the full
width of the tyre when braking but must not protrude, in order to prevent finger injuries.
► Always carry out adjustments to the wheel lock on both sides.
► Ensure that the user can operate the wheel lock without great effort. The force required to do so must not
exceed 60 N.
► Only use original drive wheels with a verified maximum radial out-of-round of 1 mm.
This adjustment must be made for fine adjustment of the wheel lock.
20
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