4.0 Prior to Installation- Important!
4.1 Back Sizes/ Weight Capacity:
WARNING!
When establishing the mounting position for the Invacare
Matrx Mini back, ensure the stability of the wheelchair is not compromised.
Adjusting the forward and aft position of the backrest will alter the user’s
center of gravity within the wheelchair. A recessed back position can
significantly reduce the rearward stability of the wheelchair. Similarly, a
more forward back position will reduce the wheelchair’s forward stability.
Mini mounting plate in the
forwardmost back position.
(mimimum seat depth)
Figure 1
Figure 2
Front of
wheelchair
Front of
wheelchair
5
Mini mounting plate in the
rearmost back position
(maximum seat depth)
4.2 Mounting Plate Configuration:
The Mounting Plates are pre-assembled on the Cane Clamps in the
rearmost
mounting configuration. This maximizes the seat depth of the wheelchair seat (up
to a maximum 2” (51
mm
) rearward offset - see
Figure 1
below).
By changing the orientation of the Mounting Plates on the Cane Clamps, the
assembly can be reconfigured
*
to provide a more
forward
mounting position for
the back if desired (up to a maximum 2” (51
mm
) forward offset - see
Figure 2
)
Note:
Each mounting plate is also designed to provide 1.5" (38
mm
) of fore
and aft adjustment relative to the cane clamp
*To reconfigure a mounting plate/cane clamp to the forwardmost orientation:
- detach the Mounting Plate from the Cane Clamp (2 screws);
- Rotate the Cane Clamp 180° and re-fasten it to Mounting Plate;
- Install Cane Clamp as illustrated in
Figure 2
.
If there is an uneven seam along the back canes where a
smaller diameter tube is inserted into a larger diameter tube,
the Mini Cane Clamps should be mounted above or below
the seam (Do Not Overlap).
P L E A S E N O T E
!
6
Spray a small amount of hairspray
on the back canes and on the
inside of the plastic inserts to create
a secure ‘no-slip’ bond.
4.0 Prior to Installation - Important!
4.3 Accommodating Different Sized Back Canes:
w
1” (26
mm
) canes
- Install cane clamp ass’y without plastic inserts.
w
7/8” (22
mm
) canes
- Install 7/8” (22
mm
) plastic inserts (x2)
(provided)
w
3/4” (19
mm
) canes
- Install 3/4” (19
mm
) plastic inserts (x2)
(provided)
Figure 3
NOTE
:
For wheelchairs with short back canes, it may be
necessary to install
Posture Back Cane Replacements
(PBCR’s). The PBCR’s are designed to replace existing push
handles or cane extensions on standard 1” (26
mm
) back
posts. The Cane Clamps can be mounted directly onto the
replacement back cane if necessary. Cane Replacements are
available from Motion Concepts (
part#-TRX2810
).
PBCR
Plastic
Insert
back cane
H E L P F U L H I N T
Mini Cane
Clamp Assembly
Figure 4
Outer
Clamp
1
2
3
