Adjusting The Back; Adjusting The Back Height; Adjusting The Back Angle - Otto Bock Ventus Instructions For Use Manual

6.5 Adjusting the Back

6.5.1 Adjusting the Back Height

The backrest height does not need to be adjusted during the initial fitting.
Back tubes must be retrofitted if the backrest height is to be adjusted. To install these, see the 647G829 service
manual.

6.5.2 Adjusting the back angle

WARNING
Incorrect installation of the anti-tipper/missing anti-tipper
Tipping over, falling of the user due to failure to observe the installation instructions and because of incorrect
adjustment
► Depending upon the settings of the chassis, the centre of gravity, the back angle and the experience of the
user, the use of an anti-tipper may be necessary.
► For a small wheelbase and a backrest that is tilted far back, an anti-tipper may need to be installed on both
sides, depending upon the user's experience.
► Verify that the anti-tipper has been installed and adjusted properly. Find the appropriate position with the
assistance of a helper.
The backrest angle can be adapted to the user's requirements ‒ e.g. after the wheelbase has been adjusted. The
angle can be adjusted between 65°‒105°.
Preliminary adjustment (20° steps)
1) Using the cable, pull out the locking bolts from the locking points (see fig. 38, item 1).
2) Rotate the counter nuts against the head of the set screw (see fig. 38, item 3).
3) Screw in the set screws by hand (see fig. 38, item 4).
4) Pull the backrest rearwards until the locking bolts lock into the desired locking points.
5) Unscrew each set screw until the screw head hits against the hook-and-loop patch (see fig. 38, item 5).
6) Retighten the counter nuts (see fig. 38, item 3). Use an open-end wrench to hold the head of the set screws
still (see fig. 38, item 4).
Fine adjustment (10° steps)
1) Remove the upper mounting screw on both sides (see fig. 39, item 1).
2) Slightly loosen the lower mounting screw on both sides (see fig. 39, item 2).
3) Rotate the counter nuts against the heads of the set screws (see fig. 38, item 3).
4) Screw in the set screws by hand (see fig. 38, item 4).
5) Adjust the back plate on both sides. Two settings are available (see fig. 39, item 3).
6) Reattach the mounting screws and tighten them (see fig. 39, item 1/2).
7) Unscrew each set screw until the screw head hits against the hook-and-loop patch (see fig. 38, item 5).
8) Retighten the counter nuts (see fig. 38, item 3). Use an open-end wrench to hold the head of the set screws
still (see fig. 38, item 4).
38
Ventus
39
Settings
Ottobock | 21