Karma Morgan M MGNM-SLN, User Manual

Page: 36 / 128

29
11. First setup
Before using, the wheelchair needs to be adjusted and set up for the user. In
this chapter we will explain all the setup which needs to be done before the
first drive.
11.1 Chassis suspension
The suspension of a chassis has been designed to increase the comfort whilst
driving. Also climbing steps will be easier having suspension on the chassis.
But suspension can also be a disadvantage. A suspension which is set to soft
has a negative influence on the control of the wheelchair. So, it is very
important to have a good mix.
11.1.1 Spring setting
Each Morgan M Versus (MGNM-VRS) wheelchair chassis has two spring units
in the front, middle and rear. The tension of the spring will be set by rotating
the threaded ring which is compressing. By rotating the ring, you can either
increase the tension (load), or reduce the tension of the spring. Increasing the
tension on the spring, the wheelchair suspension becomes stiffer. This
increases the mechanical traction and improves control.
The stiffness of the suspension can also depend on the user
’s weight. The
settings need to be done by setting and testing. We advise you to start with a
stiffer setting, since this results in the better control. If the suspension is too
hard, you can set it softer by turning the ring more counterclockwise.
To make sure the balance of the left and right spring is the same, we need to
measure the setting. The best way is to measure the distance between both
rings where the spring is clamped in mm. Make sure that the spring settings
between left and right are identical.
Before using the wheelchair, it is vital to make the right setup for the user.
A non-proper setup of the wheelchair might lead to uncontrolled driving
which can result in personal or material damage.