Headrest, Foam Back, Seat Tilt Adjustments

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a)To adjust the height, angle, or width of the lateral thoracic support pads, loosen the top bolts and slide to correct width. Tighten bolt to bolt plate. If more adjustment is neces- sary, loosen the internally mounted bolts, and slide in the track to the desired height and width. The angle is obtained by tilting the bracket as needed. Tighten the bolts.

b)To adjust the depth of the lateral thoracic pads, turn the middle bracket so that the slots are on side. Adjust to desired depth. Re- tighten the bolts.

C.HEADREST

1. Mounting a headrest.

The Solid Seat Back has a universal headrest plate mounted to it. Care should be taken to use the proper screw length when mounting.

2.Adjusting the height of the headrest.

a)Loosen the hand lever handle (A).

b)Raise or lower the headrest to the desired height.

c)Tighten the hand lever handle (A).

3.Adjusting the position of the headrest mount.

a)Use the 3/16" Allen wrench to loosen the three

(3)socket head cap screws on the upper pivot bracket (B).

b)Adjust the headrest position.

NOTE– Angle, front-to-back distance and left-to-right position are adjustable in this step.

c)Use the 3/16" Allen wrench to tighten the three

(3)socket head cap screws on the upper pivot bracket (B).

4.Adjusting the position of the headrest pad.

a)Use the 5/32" Allen wrench to loosen the three

(3)socket head cap screws at the base of the headrest (C).

b)Adjust the headrest to the desired position. Note: Ball and socket can be moved for rotational

headrest adjustment in this step.

c)Use the 5/32" Allen wrench to tighten the three

(3)socket head cap screws at the base of the headrest (C).

D. FOAM BACK

Secure the foam and cover to the shell.

To secure the back foam and cover on the Solid Seat Back, slide the top edge of the cover over the top lip of the shell. Press the back in place against the shell.

E.SEAT TILT ADJUSTMENTS

1. Initial Tilt Angle

The upright angle can be adjusted to suit the rider.

a)Operate the tilt system until the seat is tilted about 30°.

b)Adjust the stop pin (A) to the desired posi- tions. The stop pin lock-nuts (B) determine the resting position of the seat. When coming to a rest, the seat should contact both pins simulta- neously.

c)Tighten the stop pin lock-nuts.

d)Raise the seat up once again.

e)Remove the access cover on the actuator hous- ing (C).

f)Position the most rearward limit switch (D) such that the actuator shuts down when the seat contacts the stop pins (A).

NOTE– Do not loosen the screw any more than is nec- essary to slide the limit switch in its track. If the screw is over loosened, it may come out and be difficult to replace.

NOTE– The limit switch adjustment should not allow the motor to stall as the seat frame contacts the stop pins.

2. Drive Lock-out Angle

The drive lock-out angle is adjustable

a)Tilt the seat back at least 30°.

b)Remove the access cover on the actuator.

c)Adjust the middle limit switch (E) until the desired lock-out position is achieved.

d)Replace the access cover on the actuator hous- ing (C).

NOTE– The drive lock-out should be set such that the chair cannot be driven with the seat tilted to an angle of greater than 15°.

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S-646 specifications

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