5
3.3
Before Installation
Mounting Configuration
The mounting plates are shipped pre-assembled on the cane clamps in the rearmost mounting
configuration. This maximizes the seat depth on the wheelchair seat (up to a maximum 2.5” (64 mm)
rearward offset - see image A).
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 2.5” (64 mm)
forward offset - see image B).
*To reconfigure a mounting plate/cane clamp to
the forwardmost orientation:
1.
Detach the mounting plate from the cane clamp
(3 screws);
2.
Rotate the cane clamp 180° and re-fasten it to
mounting plate;
3.
Install cane clamp as illustrated in image B.
Accommodating Back Cane Size
•
1” (25 mm) back cane - Cane clamps are
installed without plastic inserts.
•
7/8” (22 mm) back cane - Requires 7/8” (22
mm) plastic inserts (provided)
•
3/4” (19 mm) back cane - Requires 3/4” (19
mm) plastic inserts*
WARNING
When establishing the mounting position for the Invacare Matrx Elite, 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.
Each mounting plates is also designed to provide 1.5” (38 mm) of fore and aft adjustment
relative to the cane clamp
Front of Wheelchair
A
B
Mounting plate in rearmost back
position (maximized seat depth)
Mounting plate in
forwardmost back
position
Front of Wheelchair
On some wheelchairs, there may be an uneven seam along the back posts where a smaller
diameter tube is inserted into a larger diameter tube. If the cane clamps must be mounted over
this seam, the plastic inserts may be cut in half to allow the clamp to fasten securely onto the back
posts (see image B).
For wheelchairs with short back canes, it may be necessary to install Matrx PB Cane
Replacements (PBCR’s). The PBCR’s are designed to replace existing push handles or cane
extensions
on standard 1” (25
mm
) back posts. The cane clamps can be
mounted directly
onto the replacement back canes in order to allow proper installation of the Invacare Matrx Elite.
Cane replacements are available from Motion Concepts (part#-TRX2810).
*3/4” (19 mm) inserts are available from
Motion Concepts upon request.
Plastic Insert
A
B
The plastic insert may be cut if
the cane clamp is secured at
the junction of 2 different
diameter back posts.
PBCR
