Invacare TRx Power Positioning System manual Power Positioning Functions

- 9 -

5.0 Power Positioning Functions

Tilt

The tilt function causes the whole seat, including the back and armrests, to rotate back around a fixed pivot.

CG (Centre of Gravity) Tilt

The CG tilt function compensates for weight shift by sliding the pivot axis and entire seat assembly forward as the seat tilts back.

Recline

The recline function causes the position of your back to change by changing the angle of the backrest with respect to the seat pan.

Precline

The precline function is similar to the recline function, but depending on the system may allow up to 30° of forward recline (creating a lean-forward position). The range of recline is decreased approximately by the number of degrees of precline.

Anterior Tilt

The anterior tilt function causes the whole seat, including the back and armrests, to tilt forward around a front pivot. The degree of anterior tilt available, up to a maximum tilt of 30°, will depend on the system. This function aids in forward standing transfers.

Extended Shear Reduction (ESR)

ESR works in conjunction with recline to reduce the shear movement between you and the backrest. This is accomplished using a linkage that slides the backrest down on the backposts as the back reclines.

Power Sliding Back (PSB)

The switch operated PSB allows the back height to be adjusted to improve positioning and shift body weight. The PSB may also be synchronized to operate in conjunction with the recline function.

Power Elevating Seat (PES)

This functions allows you to elevate your entire seating system by up to 8 inches.

Power Elevating Legrests

There are 3 configurations for power legrests:

i)Combined: the legrest actuators are programmed to elevate in unison keeping your right and left legs at the same height.

ii)Synchronized: the legrests actuators are programmed to elevate in conjunction with the power

recline function (Note: legrests can also be synchronized with power tilt if specified). The legrests elevate automatically as the seating system reclines (or tilts).

iii)Independent: the legrest actuators are programmed to elevate separately to allow you to position your right and left legs at different heights, independent from each other and the back position.

Pushrod Legrests (Mechanical)

The pushrod legrests are synchronized with the power recline and operate via a mechanical linkage. A pushrod elevates the legrests automatically as the seating system reclines. No additional actuators are required.

TRD0000, TRx Owner’s Manual- Rev. 5.0, January 20, 2005