The Correct Way To Take Obstacles; Driving Up And Down Gradients - Invacare Storm 4 Series User Manual

Invacare® Storm®⁴ Series

6.5.3 The correct way to take obstacles

The following instructions how to take obstacles also
apply for attendants if the mobility device is fitted
with an attendant control.
Fig. 6-1 Right
Ascending
1. Approach the obstacle or the curb slowly, head-on and
at a right angle.
2. Depending on the wheel drive type, stop in one of the
following positions:
a. In the case of centrally driven mobility devices: 5 -
10 cm before the obstacle.
b. For all other drives: approx. 30 - 50 cm in front of
the obstacle.
3. Check the position of the front wheels. They must be in
driving direction and at right angles to the obstacle.
4. Approach slowly and keep at a consistent speed until
the rear wheels have also passed over the obstacle.
Ascending obstacles with a curb climber
1. Approach the obstacle or the curb slowly, head-on and
at a right angle.
2. Stop in the following position: 30 – 50 cm in front of
the obstacle.
3. Check the position of the front wheels. They must be in
driving direction and at right angles to the obstacle.
92
Fig. 6-2 Wrong
4. Approach with full speed until the curb climber makes
contact with the obstacle. The impetus will lift both
front wheels over the obstacle.
5. Keep at a consistent speed until the rear wheels have
also passed over the obstacle.
Descending
The approach to descend an obstacle is the same as to
ascend it with the difference that you need not to stop
before descending.
1. Descend the obstacle with medium speed.
When descending an obstacle too slowly it could
happen that the antitippers get stuck and lift the
drive wheels off the ground. Driving the mobility
device is then no longer possible.

6.6 Driving up and down gradients

For information concerning the rated slope, refer to 11
Technical Data, page 114 .
1529686-U