Usage instructions SPEEDY F4 & F2
20
Figure 29: Ergo Back backrest bracket with adjusta-
ble backrest upholstery, back padding attached
(view from the rear)
Figure 30: Ergo Back backrest bracket with adjusta-
ble backrest upholstery with four belts, back pad-
ding removed (viewed from the rear)
If the Ergo Back backrest bracket is fitted with
a
back shell
instead of the adjustable backrest
upholstery, the adjustment possibilities de-
scribed in Chapter 18.3 apply.
Figure 31: Ergo Back backrest bracket with back
shell (viewed from the rear)
19 Seat system
Avoid falling into the seating and backrest
upholstery/back shell as it significantly in-
creases the risk of an adjustment, falling down
or defects.
The seat system usually consists of either
sprung Body Contour seat cover or a belt sys-
tem.
With a seating system from
Body Contour
seat cover
, there is no adjustment option. The
Body Contour seat cover has a springing effect
and when seating.automatically forms a slack.
Figure 32: Body Contour seat cover
The
belt system
can be subsequently adjust-
ed. Using the fleece hook-and-loop straps, the
slack in the seating surface can be changed so
that it suits your seat cushion system. In doing
so, the seat cover should not have too much
slack to avoid touching the frame cross tubes.
Figure 33: Open belt system with fleece hook-and-
loop straps for adjusting the slack
Top belt
Bottom belt
Middle belts
