Check The Tipping Stability - Invacare Bora Service Manual

SERVICE MANUAL
9.3

Check the tipping stability

Any change in the seating position can negatively influence the tipping stability of the electric
wheelchair. For this reason, after adjusting the seating position, you should always verify the
tipping stability of the wheelchair.
WARNING!
Any changes to the drive program can affect the driving characteristics and the tipping
stability of the vehicle!
· Changes to the drive program may only be carried out by trained Invacare® specialist
dealers!
· Invacare® supplies all mobility devices with a standard drive program ex-works. Invacare®
can only give a warranty for safe vehicle driving behaviour - especially the tipping stability -
for this standard drive program!
Tipping stability check
·
Set the following angle on the wheelchair:
- Backrest
- Seat tilt
·
Allow the user to down in the wheelchair in a sitting position that is typical for them.
·
Drive the front wheels of the wheelchair onto a step about 100 mm high.
This can be done using a ramp, for example (illustration B).
·
Make sure that the front wheels are pointed backwards compared to the direction of travel.
·
Attach a reference weight of 8 kg to the push bar (illustration B).
·
Verify that the wheelchair is at most in a balanced or "floating" condition in this position.
This means that the front wheels can slightly lose contact with the ground, but the chair must
not tip back onto its anti-tipper wheels.
If the wheelchair does not fall back onto its anti-tipper wheels, then the tipping stability is OK.
If the wheelchair falls back onto its anti-tipper wheels, then you must either:
-
shift the center of gravity far enough forward that the chair does not fall onto the anti-tipper
wheels or
-
install the adaptor again.
You must repeat the steps described above after each modification to verify the tipping stability.
134
30 °
max.
®
Invacare - Bora/Spectra XTR