Invacare CRF Owners Manual - Page 31

SECTION 6-BACK Back Angle Adjustment NOTE: For this procedure, refer to FIGURE 6.2 on page 32 and FIGURE 6.3 on page 33. NOTE: The numbers on the back angle plate are intended to define the resulting back angle of a chair that has 2 inch seat drop (at 17 inch 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 6.3 on page 33 to see these settings converted into back angle relative to the seat. NOTE: Perform this procedure on both sides of the wheelchair at the same time. 1. Fold down the back. Refer to Unfolding/Folding the Back on page 30. 2. Loosen the jam nut on the placement screw located at the bottom of the back cane (Detail "A"). 3. Tighten the placement screw so that the screw and jam nut are snug against the bottom of the back cane (Detail "B"). 4. Remove the mounting screw that secures the adjustment square to the back angle plate (Details "A" and"C"). 5. Remove the adjustment square from the back angle plate (Detail "C"). NOTE: 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° (FIGURE 6.3). ƽ 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. 6. Position the adjustment square in the back plate with the indent located underneath the desired back angle (FIGURE 6.3). 7. Secure the adjustment square to the back angle plate with the mounting screw. Tighten securely. 8. Repeat STEPS 2‐6 for remaining back cane. ƽ WARNING 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 (Detail "A"). Otherwise, serious injury could result. 9. Unfold the back until the plunger pins lock into the mounting holes in the adjustment square in the back angle plate. Part No 1134872 31 Crossfire™Series Wheelchairs