Operation
4.2 Back Angle Adjustment
WARNING!
–
If the adjustment square is installed into the back angle
plate so that a number does not appear next to the
indent, DO NOT use this position, otherwise injury
will occur. This position of the adjustment square
does not allow the locking pins to lock into position
when the back is raised.
–
After unfolding the back, ensure that the plunger
pins are fully engaged in the mounting holes of the
adjustment square in the back angle plates. Otherwise,
serious injury could result.
The numbers on the back angle plate are intended to define
the resulting back angle of a chair that has 2 inch (5.08cm)
seat drop [at 17 inch (43.18cm) depth] and that is measured
relative to true vertical with the chair sitting on a level
surface. The plus (+) sign increases the back angle and
the minus (-) sign decreases the back angle. The resulting
back angle will vary somewhat depending on your chair
configuration. Refer to figure on page 25–26 to see these
settings converted into back angle relative to the seat.
Perform this procedure on both sides of the wheelchair at
the same time.
Note the indent on the adjustment square. When the
adjustment square is positioned in the back angle plate,
the number that is located directly next to the indent will
be back angle relative to true vertical. One side of the
adjustment square provides back angles of +8°, 0° and -4°.
Flip the adjustment square over to obtain back angles of
-8°, +4° and 0°.
When adjusted properly, the back should have a small
amount of movement when locked in the open position.
Plunger pins should snap in and release easily without
resistance.
DETAIL “A”
1.
Fold down the back. Refer to 4.1 Unfolding/Folding the Back,
page 24.
2.
Loosen the jam nut
A
on the placement screw
B
located at the
bottom of the back cane
C
(Detail “A”).
1171801-A
25
