Adjusting The Seat Depth; Adjusting The Seat Angle - Invacare FDX User Manual

Invacare® FDX®

5.7.5 Adjusting the seat depth

CAUTION!
Increased risk of tipping because of too short
seat depth
With seat depths below 41 cm, the tipping
stability of the wheelchair gets worse and there
is a higher risk, in certain situations, of falling
onto the anti-tipping wheels.
– Choose a seat depth of at least 41 cm.
– Shorter seat depths are prevented by a tightly
fastened screw on the seat profile. NEVER
remove this screw.
The seat depth has a major influence on the selection
of the center of gravity of the seat. This impacts its
dynamic stability. If you make a major change to the
seat depth the center of gravity of the seat must also
be adjusted. See "Adjusting the center of gravity of
the seat" in the service instructions for this mobility
device. The service instructions can be ordered from
Invacare. However, they contain instructions for
specially trained technicians and describe operations
that are not intended for the end user.
The numbers on the scale on the seat serve as a
guide. They do not stipulate any dimensions such as
seat depth in centimeters.
Tools:
• 6 mm Allen key
42
1. On both sides, loosen the bottom backrest screw A.
Do not remove the screws!
2. Move the backrest to the required seat depth.
You can adjust the seat depth steplessly. Use scale B
on the seat as a guide for this purpose.
Ensure that the same seat depth is set on both sides.
3. Re-tighten the screws.

5.8 Adjusting the seat angle

CAUTION!
Adjusting the seat tilt or the backrest angle
changes the geometry of the mobility device
and directly influences its dynamic stability!
– For details regarding dynamic stability,
negotiating gradients and obstacles and the
correct adjustment of seat tilt or backrest angle,
refer to 6.3 Taking Obstacles, page 81 and 6.4
Driving up and down Gradients, page 83.
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