3.ConnectingaBacktothewheelchair:
Follow the User Guides supplied with the Pivot or T-Trak for connecng the Back to the
wheelchair. Also, for Pivots, please see the 4 minute video on our website. This is in the
Pivot pull down menu, bo"om of the first page. The path to this video is:
h"p://www.matrixseang.com/Pivot-wheelchair-interface-clamp.php
Fi>ng of the V-Trak can be found on the V-Trak website:
h"p://www.v-trak.com/products/specialist-seang/v-trak-lite
2.Toolsandpartnames
If the shape of the Back is to be changed during delivery, a 4mm Allen Key is needed. We
recommend a ball nosed, T-handle version so access near wheelchair back upright canes is
improved (ball nosed Allen Keys allow up to 30 degrees off centreline ghtening).
Parts and Tools: 1. Bo"om Clamp Half (threaded part), 2. Top Clamp Half, 3. M5x8mm
socket screw, 4. 4ball, 5. 2ball, 6. Elbow, 7. Edge ball, 8. Matrix Key for rotaon of
clamp during live fi>ngs, 9. Upholstery Peg removal tool, 10. 4mm T handle Ball Nosed
Allen Key
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Once the small secon of loosened Matrix is re-shaped to the client it can be ghtened
again. Tightening the hex screw controls Matrix structural strength. When completely ght-
ened the structure is locked in posion.
So . . .
•
'(, the structure can be made as sff as needed, eg., for a live back fi>ng
when Matrix must hold its weight against gravity,
•
' )*+ and because of the high
ghtening torque limit you can use a ratchet screwdriver or powered screwdriver for
extra speed.
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4.Shapeadjustment:
In most cases the Smart Back can be connected to the wheelchair and posioned appropri-
ately for the client and locked in posion (as per User Guides and video). If necessary some
simple shape changes can be done in a few minutes to improve the fit or,
for example, to make one side of the Back asymmetrically correcve. To do
this you need to understand how the clamp, that holds the ball units (called
4balls) together, works.
The clamp is loosened with the 4mm Allen Key. Rotate the screw counter
clockwise enough so the 4balls can move. If you
overdo it the clamp may fall off so experiment with
one to see how far you can turn the Allen key to
ensure the clamp is loose but ght enough to hold
the parts in place.
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