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Page 1
Owner's Operator And Maintenance Manual
INFINITY
™
BACK SUPPORTS
DualFlex10
™
UniBack10
™
DEALER: THIS MANUAL MUST BE GIVEN
TO THE USER OF THE WHEELCHAIR.
USER: BEFORE USING THIS WHEELCHAIR,
READ THIS MANUAL AND SAVE FOR
FUTURE REFERENCE.
Page 2
Infinity Back Supports
2
Part No. 1109923 Rev . B
WARNING
THE SECTIONS IN THIS MANUAL MUST BE
PERFORMED BY A QUALIFIED SERVICE
TECHNICIAN.
DO NOT INSTALL OR USE THIS EQUIPMENT
WITHOUT FIRST READING AND
UNDERSTANDING THIS MANUAL. IF YOU
ARE UNABLE TO UNDERSTAND THE
WARNINGS, CAUTIONS, AND
INSTRUCTIONS, CONTACT A HEALTHCARE
PROFESSIONAL, DEALER OR TECHNICAL
PERSONNEL IF APPLICABLE BEFORE
ATTEMPTING TO INSTALL OR USE THIS
EQUIPMENT - OTHERWISE INJURY OR
DAMAGE MAY RESULT.
SAVE THESE INSTRUCTIONS
SPECIAL NOTES
NOTICE
THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE WITH-
OUT NOTICE.
WARNING/CAUTION notices as used in this manual apply to hazards or unsafe practices
which could result in personal injury or property damage.
SP
EC
IA
L
N
O
T
ES
SPECIAL NOTES
Page 3
Part No. 1109923 rev. B
3
Infinity Back Supports
SPECIAL NOTES................................................................................ 2
GENERAL GUIDELINES ..................................................................... 3
IMPORTANT INFORMATION ............................................................ 5
INSTALLATION/ADJUSTMENT OVERVIEW ......................................... 5
SECTION 1 - INSTALLING THE INFINITY BACK ASSEMBLY ............. 7
INSTALLING THE INFINITY BACK ASSEMBLY...............................................................................7
INSTALLING THE CLAMP BODIES ......................................................................................................9
ADJUSTING THE BACK WIDTH....................................................................................................... 10
INSTALLING/REMOVING THE LATERAL SUPPORTS ............................................................... 11
SECTION 2 - INSTALLING/REMOVING THE INFINITY BACK ........... 12
INSTALLING/REMOVING THE INFINITY BACK......................................................................... 12
SECTION 3 - ADJUSTING THE INFINITY BACK .............................. 13
ADJUSTING BACK HEIGHT................................................................................................................ 13
ADJUSTING THE BACK DEPTH ........................................................................................................ 14
ADJUSTING THE HINGE/ANGLE (DUALFLEX10 ONLY)........................................................ 14
ADJUSTING THE BACK ANGLE........................................................................................................ 15
ADJUSTING THE LATERAL SUPPORTS .......................................................................................... 16
SECTION 4 - DUALFLEX10/FIXED ANGLE PLATES .......................... 18
CONVERTING DUALFLEX10 HINGES TO FIXED ANGLE PLATES .................................... 18
CONVERTING FIXED ANGLE PLATES TO DUALFLEX10 HINGES .................................... 18
SECTION 5 - UPHOLSTERY/CUSHIONS ............................................ 20
REMOVING/INSTALLING THE UPHOLSTERY ............................................................................. 20
REPLACING THE CUSHIONS ............................................................................................................ 22
LIMITED WARRANTY
LIMITED WARRANTY
LIMITED WARRANTY
LIMITED WARRANTY
LIMITED WARRANTY .................................................... BACK COVER
TABLE OF CONTENTS
T
A
B
LE
O
F
C
O
N
T
EN
T
S
TABLE OF CONTENTS
Page 4
Infinity Back Supports
4
Part No. 1109923 Rev . B
GENERAL GUIDELINES
NOTE: Check all parts for shipping damage. In case of damage, DO NOT use. Contact your Dealer for further instruction.
INSTALLATION WARNINGS
Stabilize from the ground up. A stable wheelchair base, seat and footrests are
requirements for any torso positioning system.
For proper installation of the Infinity Back and to reduce the risk of pressure
sores, the adjustment sections in this manual MUST be performed in the
following order:
1.
Adjusting the Back Height
2.
Adjusting the Depth Hardware
3.
Adjusting the Hinge Angle (DUALFLEX10 ONLY)
4.
Adjusting the Back Angle
5.
Adjusting the Lateral Pads
Ensure the Infinity Back is properly secured to the wheelchair BEFORE using.
The Infinity back must slide onto the lower mounting pins and pivot smoothly
without binding. The upper mounting pins must fully engage both locking
clamps - otherwise injury or damage may occur.
After ANY adjustments, repair or service and BEFORE use, make sure all
attaching hardware is tightened securely - otherwise injury or damage may
occur.
STABILITY WARNINGS
The seat height, seat depth, back height, tilt angle, back angle, pivot point of
seat frame, seating system, caster position, size and position of the rear wheels,
wheel locks, anti-tippers, locking collar as well as the user condition directly
relate to the stability of the wheelchair. Any change to one (1) or any combina-
tion of the fourteen (14) may cause the wheelchair to decrease in stability. Use
EXTREME caution when using a new seating position.
GENERAL GUIDELINES
G
EN
ER
A
L
G
U
ID
ELIN
ES
Page 5
Part No. 1109923 rev. B
5
Infinity Back Supports
Seat Height
l
3
3
3
3
3
3
3
3
3
Back Height
l
3
3
3
Seat Depth
l
3
3
3
3
3
3
3
3
3
3
Back Angle
3
l
3
3
3
3
3
3
3
3
Seating System
3
3
3
3
l
3
3
3
3
3
3
3
3
3
Tilt Angle
3
3
3
l
3
3
3
3
3
3
3
Seat Frame Pivot Point
3
3
3
3
3
l
3
3
3
3
3
3
3
Caster Position
3
3
l
3
3
3
3
3
3
Rear Wheel Size
3
3
l
3
3
3
Rear Wheel Position
3
3
3
3
3
3
3
3
l
3
3
3
3
User Condition
3
3
3
3
3
3
3
3
3
3
l
3
3
3
Seat Dump
3
3
3
3
3
3
3
3
3
l
Locking Collar
3
3
3
3
l
Seat
Height
Back
Height
Seat
Depth
Back Angle
Seating
System
T
ilt
Angle
Seat
F
rame
Pivot
Point
Caster
Position
Rear
Wheel
S
ize
Rear
Wheel
Position
User
Condition
Wheel
Locks
Anti-T
ippers
Locking
Collar
Seat
Dump
NOTE: When changes to the left hand column occur, follow across the chart and refer to the✓
section to maintain the proper stability, safety and handling of the wheelchair.
NOTE: Additional adjustments may be needed according to the wheelchair type. Refer to the wheel-
chair owner's manual for these sections.
ALWAYS make sure wheelchair is stable BEFORE reclining the Infinity Back
system. Rear wheels may have to be repositioned rearward depending on the
degree of recline. ALWAYS ensure stability BEFORE using maximum amount
of recline. TEST wheelchair BEFORE it is occupied by end user to ensure stabil-
ity.
To maintain the stability of the wheelchair when moving the rear wheels to
ANY forward position, the amount of recline MUST be limited to prevent the
wheelchair from tipping onto the anti-tippers.
The necessary back angle MUST be selected BEFORE repositioning rear wheels
forward.
AS REGARDS RESTRAINTS - SEAT POSITIONING STRAPS - IT IS THE
OBLIGATION OF THE DME DEALER, THERAPISTS AND OTHER HEALTH
CARE PROFESSIONALS TO DETERMINE IF A SEAT POSITIONING STRAP
IS REQUIRED TO ENSURE THE SAFE OPERATION OF THIS EQUIPMENT
BY THE USER. SERIOUS INJURY CAN OCCUR IN THE EVENT OF A FALL
FROM A WHEELCHAIR.
SEATING PRESSURE WARNING
Skin condition should be checked very frequently after the installation and use
of any new seating system.
STABILITY WARNINGS (CONTINUED)
GENERAL GUIDELINES
G
EN
ER
A
L
G
U
ID
ELIN
ES
Page 6
Infinity Back Supports
6
Part No. 1109923 Rev . B
INSTALLATION/ADJUSTMENT OVERVIEW (FIGURE 1)
WARNING
For proper installation of the Infinity Back and to reduce the risk ofpressure sores, the
adjustment sections in this manual MUST be performed in the following order:
1.
Adjusting the Back Height
2.
Adjusting the Depth Hardware
3.
Adjusting the Hinge Angle (DUALFLEX10 ONLY)
4.
Adjusting the Back Angle
5.
Adjusting the Lateral Pads
Follow the steps below in order. Refer to the section below each step.
IMPORTANT INFORMATION
The best way to avoid problems related to pressure sores is to understand their causes and your role in a
skin management program.
Your therapist and physician should be consulted if you have any questions regarding weight relief, self-
examination of skin, or individual limitations and needs.
All cushions should be selected carefully. Working with your therapist, physician and equipment supplier is
the best way to assure that a cushion choice matches your individual needs.
As the needs of the client become more complex, the cushion evaluation becomes more important.
INSTALLATION/ADJUSTMENT OVERVIEW
INFORMATION/OVERVIEW
A. Install the Infinity Back
assembly (SECTION 1)
NOTE: After installation and before use, en-
sure all mounting hardware is Securely tight-
ened.
F. Lateral support
adjustments
(SECTION 3).
D. Back Angle
adjustments
(SECTION 3).
E. Hinge angle
adjustments
(DualFlex10 only)
(SECTION 3)
B. Height
adjustments
(SECTION 3).
C. Depth adjustments
(SECTION 3).
FIGURE 1 - INSTALLATION/ADJUSTMENT OVERVIEW
IN
FO
R
M
A
T
IO
N
/
O
V
ER
V
IEW
Page 7
Part No. 1109923 rev. B
7
Infinity Back Supports
INSTALLING THE INFINITY BACK ASSEMBLY (FIGURE
1)
WARNING
DO NOT install the Infinity Back assembly onto back canes with an outside
diameter greater than 1-inch or less than 7/8-inch - otherwise injury or damage
may occur.
NOTE: Refer to the INSTALLATION AND STABILITY WARNINGS in the GENERAL GUIDELINES of this
manual.
1. If necessary, remove the EXISTING back system. Refer to the appropriate Owner's
Manual.
2. Position the Infinity Back assembly against the back canes and note the approximate height
and depth of the clamp bodies in relation to the back canes.
3. Remove the back upholstery, Refer to REMOVING/INSTALLING THE BACK UPHOL-
STERY in SECTION 5 of this manual.
4. Install both clamp bodies onto the back canes. Refer to INSTALLING/ADJUSTING THE
CLAMP BODIES in this section of this manual.
5. If necessary, adjust the back width to match the wheelchair seat width. Refer to ADJUST-
ING THE BACK WIDTH in this section of the manual.
6. Install the Infinity back onto the clamp bodies. Refer to INSTALLING/REMOVING THE
BACK in SECTION 2 of this manual.
7. Install the lateral supports. Refer to INSTALLING/REMOVING THE LATERAL
SUPPORTS in this section of this manual.
8. If necessary, install the back upholstery. Refer to REMOVING/INSTALLING THE BACK
UPHOLSTERY in SECTION 5 of this instruction sheet.
9. Position the user into the wheelchair. Refer to the wheelchair Owner's Manual.
This Section Includes the Following:
Installing the Infinity Back Assembly
Installing the Clamp Bodies
Adjusting the Back Width
Installing the Lateral Supports.
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure all attach-
ing hardware is tightened securely - otherwise injury or damage may occur.
INSTALLATION
SECTION 1
IN
ST
A
LLA
T
IO
N
Page 8
Infinity Back Supports
8
Part No. 1109923 Rev . B
11. Perform the following sections in the order listed to adjust the back assembly to fit the
wheelchair and the user as necessary
A. Adjust the back height. Refer to ADJUSTING THE BACK HEIGHT in SECTION 3 of
this manual.
B. Adjust the back depth hardware. Refer to ADJUSTING THE BACK DEPTH in
SECTION 3 of this manual.
C. DUALFLEX10 BACK ONLY: Adjust the hinge/angle. Refer to ADJUSTING THE
HINGE ANGLE in SECTION 3 of this manual.
D. Adjust the back angle. Refer to ADJUSTING THE BACK ANGLE in SECTION 3 of
this manual.
E. Adjust the lateral supports. Refer to ADJUSTING THE LATERAL SUPPORTS in
SECTION 3 of this manual.
12. Inspect all mounting hardware to ensure ALL mounting hardware has been securely tight-
ened.
13. Seat user in wheelchair, visually inspect the Infinity Back assembly and the wheelchair to
ensure all adjustments have been properly make.
14. If necessary, repeat STEPS 10-13 until the user is comfortable.
Back Assembly
Back Cane
Clamp Bodies
Lateral Supports
DualFlex10 Hinge
DualFlex10 Hinge
SECTION 1
INSTALLATION
IN
ST
A
LLA
T
IO
N
FIGURE 1 - INSTALLING THE INFINITY BACK ASSEMBLY
NOTE: Ensure both clamp
bodies are adjusted to the
same hight.
Page 9
Part No. 1109923 rev. B
9
Infinity Back Supports
INSTALLING/REMOVING CLAMP BODIES (FIGURE 2)
NOTE: Refer to the INSTALLATION AND STABILITY WARNINGS in the GENERAL GUIDELINES of this
manual.
NOTE: Reverse this section to remove the clamp bodies from the back canes.
NOTE: In order to obtain the proper back depth adjustment, It may be necessary to reverse the direction
of the outer cane clamp in order to obtain the proper seat depth.
NOTE: Both outer cane clamps MUST face the same direction.
NOTE: Use supplied T-handle 3/16-inch allen wrench or equivalent when making adjustments.
1. If necessary, perform the following to reverse the cane clamp:
A. Remove the two (2) clamp mounting screws that secure the outer cane clamp to the
clamp body as shown in DETAIL "A" of FIGURE 2.
B. Remove the cane clamp from the clamp body. Rotate the outer cane clamp 180°
clockwise and position the cane clamp back onto the clamp body as shown in DETAIL
"B" in FIGURE 2.
C. Reinstall the two (2) clamp mounting screws.
D. Repeat STEPS A-C on remaining clamp body.
2. Loosen but do not remove the two (2) mounting screws securing the outer cane clamp to
the clamp body.
3. With the mounting pins facing inside the wheelchair position the clamp body onto the back
cane at the desired height and hand tighten the two (2) mounting screws as shown in
FIGURE 2.
4. Repeat STEPS 2-3 for the remaining clamp body.
NOTE: The clamp bodies must be installed at the same height and parallel to the seat frame so that the
mounting pins on one clamp body are parallel to the mounting pins on the remaining clamp body to
ensure the Infinity Back properly engages all four (4) mounting pins.
5. Ensure that both clamp bodies are positioned at the same height and parallel to the seat
frame as shown in DETAIL "C" of FIGURE 2
6. Frame. Securely tighten the four (4) mounting screws.
Outer
Cane
Clamp
Clamp
Body
Mounting
Screws
Mounting
Pins
Back
Cane
Mounting
Screws
Outer Cane
Clamp
Clamp Body
Outer Cane Clamp
(Rotated)
Clamp Body
Mounting
Screws
INSTALLATION
SECTION 1
IN
ST
A
LLA
T
IO
N
FIGURE 2 - INSTALLING/REMOVING CLAMP BODIES
DETAIL "A"
DETAIL "B"
DETAIL "C"
Clamp
Bodies
NOTE: Infinity
Back (Shown
For Referance)
Seat
Frames
FRONT
OF
WHEELCHAIR
Page 10
Infinity Back Supports
10
Part No. 1109923 Rev . B
ADJUSTING THE BACK WIDTH (FIGURE 3)
NOTE: Refer to theINSTALLATION AND STABILITY WARNINGSin theGENERAL GUIDELINESof this
manual.
NOTE: Use supplied T-handle 3/16-inch allen wrench or equivalent when making adjustments.
1. If necessary, remove the back from the wheelchair. Refer to REMOVING/INSTALLING
THE BACK in SECTION 2 of this manual.
2. If necessary remove the back upholstery. Refer to REMOVING/INSTALLING THE BACK
UPHOLSTERY in SECTION 5 of this manual.
3. Loosen but do not remove the two (2) mounting screws that secure the back width sup-
port bracket to the Infinity back.
4. Position the back width support bracket to one of three mounting positions Indicated by
the mounting position indicator on the Infinity Back and the three (3) mounting positions
located on the width support bracket as shown in DETAIL "A" of FIGURE 3.
5. Hand tighten the two (2) mounting screws that secure the back width support bracket to
the Infinity back.
6. Repeat STEPS 3-5 to the three (3) remaining back width support bracket.
7. Reinstall the back onto wheelchair. Refer to REMOVING/INSTALLING THE BACK in
SECTION 2 of this manual.
8. Inspect the back support hardware to ensure the locking clamps securely engage the
mounting pins.
9. If necessary, loosen but do not remove the eight (8) mounting screws that secure the back
width support bracket to the back to make final width adjustments to ensure the mounting
pins properly engage the locking clamps without binding.
10. Securely tighten eight (8) mounting screws.
Back Width Support
Brackets
Infinity Back
Width Mounting Positions
(14, 15 and 16-inch)
Mounting Screws
Back Width Support
Bracket
Mounting Position
Indicator
Width Mounting Positions
(17, 18 and 19-inch)
Mounting Screws
Back Width Support
Bracket
Mounting Position
Indicator
Width Mounting Positions
(20, 21 and 22-inch)
Mounting Screws
Back Width Support
Bracket
Mounting Position
Indicator
SECTION 1
INSTALLATION
IN
ST
A
LLA
T
A
IO
N
FIGURE 3 - ADJUSTING THE BACK WIDTH
Mounting Pins
DETAIL "A"
LARGE
BACK
MEDIUM
BACK
SMALL
BACK
NOTE: All mounting brackets
should be adjusted to the same
witdth setting.
Page 11
Part No. 1109923 rev. B
11
Infinity Back Supports
INSTALLING THE LATERAL SUPPORTS (FIGURE 4)
NOTE: Refer to theINSTALLATION AND STABILITY WARNINGSin theSAFETY SUMMARYof this
manual.
NOTE: Two (2) small lateral supports having four (4) mounting holes each and two (2) large lateral supports having six
(6) mounting holes each are shipped with the Infinity back.
NOTE: In most cases the small lateral supports will be mounted to the lower back plate and the large
lateral supports will be mounted to the upper pack plate. If necessary, the location of the lateral supports
may be reversed for improved user comfort.
1. Using the two (2) small mounting plates and four (4) mounting screws, secure the two (2)
lateral supports to the lower back panel as shown in FIGURE 4.
2. Perform one (1) of the following:
A. SHORT BACK - Proceed to STEP 3.
B. MEDIUM BACK - Align the lateral support with one (1) of two (2) mounting positions
on the upper back plate as shown in DETAIL "A" of FIGURE 4.
C. TALL BACK - Align the lateral support with one (1) of three (3) mounting positions on
the upper back plate as shown in DETAIL "B" of FIGURE 4.
3. Using a large mounting plate and two (2) mounting screws, secure a lateral support to the
upper back panel as shown in FIGURE 4.
4. Repeat STEP 3 for the remaining lateral support to be installed onto the upper back plate.
5. Using a small mounting plate and two (2) mounting screws, secure a lateral support to the
upper back panel as shown in FIGURE 4.
6. Repeat STEP 5 for the remaining lateral support to be installed onto the lower back plate.
Small
Lateral
Supports
Large
Lateral
Supports
Lower Back
Plate
Upper Back
Plate
Mounting
Positions
Large
Mounting
Plates
Small
Mounting
Plates
Mounting
Screws
Mounting Positions
Mounting Positions
Upper
Back
Plate
Upper
Back
Plate
Mounting
Positions
INSTALLATION
SECTION 1
IN
ST
A
LLA
T
IO
N
MEDIUM BACK
TALL BACK
DETAIL "A"
FIGURE 4 - INSTALLING THE LATERAL SUPPORTS
DETAIL "B"
Page 12
Infinity Back Supports
12
Part No. 1109923 Rev . B
This Section Includes the Following:
Installing/Removing the Infinity Back
WARNING
Ensure the Infinity Back is properly secured to the wheelchair BEFORE using.
The Infinity back must slide onto the lower mounting pins and pivot smoothly
without binding. The Upper mounting pins must fully engage both locking
clamps - otherwise injury or damage may occur.
After ANY adjustments, repair or service and BEFORE use, make sure all
attaching hardware is tightened securely - otherwise injury or damage may
occur.
NOTE: Refer to the INSTALLATION AND STABILITY WARNINGS in the GENERAL GUIDELINES of this
manual.
INSTALLING/REMOVING THE INFINITY BACK
(FIGURE 1)
INSTALLING THE BACK
1. With the top of the Infinity Back angled towards the front of the wheelchair, slide the two
(2) back supports onto the lower mounting pins as shown in DETAIL "A" of FIGURE 1.
2. Tilt the Infinity Back towards the back canes until the upper mounting pins lock into the
back supports. An audible click will be heard when the locking clamps properly engage the
upper mounting pins.
REMOVING THE BACK
1. Using one (1) hand, pull the release cord to disengage the locking clamps as shown in
DETAIL "B" of FIGURE 1.
2. Use remaining hand to tilt the back towards the front of the wheelchair and lift up to
remove the back from the wheelchair.
Release Cord
Upper Mounting Pins
Back Supports
Locking Clamps
Infinity
Back
Back Canes
Upper
Mounting Pins
Infinity Back
Lower Mounting
Pins
Release Cord
SECTION 2
INSTALLING/REMOVING
IN
ST
A
LLIN
G
/R
EM
O
V
IN
G
FIGURE 1 - INATALLING/REMOVING THE INFINITY BACK
DETAIL "A"
DETAIL "B"
Page 13
Part No. 1109923 rev. B
13
Infinity Back Supports
ADJUSTING THE BACK
HEIGHT (FIGURE 1)
NOTE: Refer to the INSTALLATION AND STABIL-
ITY WARNINGS in the SAFETY SUMMARY of this
manual.
1. Loosen but do not remove the four (4)
clamp mounting screws that secure the
two (2) clamp bodies to the back canes.
2. Grasp both clamp bodies and reposition
the Infinity back to the desired height.
3. Ensuring that both clamp bodies are at the
same height and set parallel to the seat
frame.
4. Securely tighten the four (4) mounting
screws.
This Section Includes the Following:
Adjusting the Back Height
Adjusting the Back Depth
Adjusting the Hinge Angle
Adjusting the Back Angle
Adjusting the Lateral Supports
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure all attach-
ing hardware is tightened securely - otherwise injury or damage may occur.
For proper installation of the Infinity Back and to reduce the risk of pressure
sores, the adjustment sections below MUST be performed in the following
order:
1.
Adjusting the Back Height
2.
Adjusting the Depth Hardware
3.
Adjusting the Hinge Angle (DUALFLEX10 ONLY)
4.
Adjusting the Back Angle
5.
Adjusting the Lateral Pads
NOTE: Refer to the INSTALLATION AND STABILITY WARNINGS in the GENERAL GUIDELINES of this
manual.
NOTE: Unless otherwise noted, the user maybe seated in the wheelchair while performing the following
sections. To position the user into the wheelchair. Refer to the wheelchair Owner's Manual.
NOTE: After adjustments are complete and before use, ensure all mounting hardware is securely tight-
ened and the Infinity back properly engages the mounting pins.
NOTE: Use supplied T-handle 3/16-inch allen wrench or equivalent when making adjustments.
Clamp Bodies
Clamp
Mounting
Screws
Back Canes
INSTALLATION
SECTION 3
IN
ST
A
LLA
T
IO
N
FIGURE 1 - ADJUSTING THE BACK
HEIGHT
Page 14
Infinity Back Supports
14
Part No. 1109923 Rev . B
ADJUSTING THE HINGE ANGLE (DUALFLEX10 ONLY)
(FIGURE 3)
NOTE: Refer to the INSTALLATION AND STABILITY WARNINGS in the SAFETY SUMMARY of this manual.
NOTE: The following sections apply to the DualFlex10 ONLY. If installing/adjusting a UniBack10 proceed to ADJUST-
ING THE BACK DEPTH in this section of the manual.
1. Pull UP on the bottom of the back upholstery flap to release the hook and loop fasteners
and access the rear of the Infinity back.
2. Loosen, but do not remove the two (2) adjustment screws on both hinges.
3. Grasp and hold the top of the upper back panel and bottom of the lower back panel.
4. Push or pull to adjust the angle of the back to the desired angle.
5. Securely tighten the two (2) adjustment screws on both hinges.
6. Adjust the lateral supports. Refer to ADJUSTING THE LATERAL SUPPORTS in this
section of the manual.
ADJUSTING THE BACK DEPTH (FIGURE 2)
NOTE: Refer to the INSTALLATION AND STABILITY WARNINGS in the GENERAL GUIDELINES of this
manual.
1. Loosen but do not remove the two (2) depth adjustment screws located on the outside of
both clamp bodies.
NOTE: Both clamp bodies must be set to the same depth adjustment.
2. Slide the Infinity back to one (1) of five (5) depth positions indicated on the inside of the
clamp bodies.
3. Securely tighten the two (2) depth adjustment screws.
Depth Position
Indicators
Depth Adjustment
Screws
Clamp Body
Infinity Back
Clamp Body
SECTION 3
ADJUSTING
A
D
JU
ST
IN
G
FIGURE 2 - ADJUSTING THE BACK DEPTH
Page 15
Part No. 1109923 rev. B
15
Infinity Back Supports
ADJUSTING THE BACK ANGLE (FIGURE 4)
NOTE: Refer to the INSTALLATION AND STABILITY WARNINGS in the GENERAL GUIDELINES of this
manual.
1. Loosen but do not remove the two (2) lower mounting pins.
2. Tilt the Infinity back until desired back angle is achieved.
3. Visually inspect the back angle indicators located on the outside of the clamp bodies to
ensure the two (2) lower mounting pins are set to the same position.
4. Securely tighten the two (2) lower mounting pins.
ADJUSTING
SECTION 3
A
D
JU
ST
IN
G
Back Angle
Indicators
Clamp Body
Clamp Body
Infinity Back
Clamp Body
Lower Mounting Pins
FIGURE 4 - ADJUSTING THE BACK ANGLE
DualFlex10 Hinge
Adjustment
Screws
DualFlex10
Hinge
Upper Back Plate
Lower Back Plate
Lateral
Supports
FIGURE 3 - ADJUSTING THE HINGE ANGLE (DUALFLEX10 ONLY)
Page 16
Infinity Back Supports
16
Part No. 1109923 Rev . B
ADJUSTING THE LATERAL SUPPORTS
NOTE: Refer to theINSTALLATION AND STABILITY WARNINGSin theSAFETY SUMMARYof this
manual.
ADJUSTING THE HEIGHT (FIGURE 5)
NOTE: If necessary, Remove the user from the
wheelchair before performing this section. Refer
to the wheelchair Owners Manual.
1. Remove the back upholstery. Refer to
REMOVING/INSTALLING THE BACK
UPHOLSTERY in SECTION 5 of this
manual.
2. Remove the two (2) mounting screws
and mounting plate that secure the lateral
support to the Infinity Back.
3. Perform one of the following:
A.Large lateral support mounted
to the upper back plate:Position
the large lateral support in one (1) of
the four (4) mounting positions.
B.Small lateral support mounted
to the lower back plate:Position
the small lateral support in one (1) of
the three (3) mounting positions.
C.Small lateral support mounted
to the upper back plate:Position
the small lateral support in one (1) of
the two (2) mounting positions.
D.Large lateral support mounted
to the lower back plate:Position
the lower lateral support in one (1)
of the five (5) mounting positions.
4. Using the mounting plate and two (2)
mounting screws, secure the lateral
support to the Infinity back. Hand tighten
the mounting screws.
5. Repeat STEPS 2-4 on the remaining three
(3) lateral supports until all lateral sup-
ports are at the desired height.
6. Adjust the width of the lateral supports.
Refer to ADJUSTING THE WIDTH in
this section of the manual.
7. If all necessary adjustments are complete, ensure all mounting hardware is securely
tightened.
SECTION 3
ADJUSTING
A
D
JU
ST
IN
G
Upper
Back Plate
Lower
Back Plate
Large
Lateral
Supports
Small Lateral
Supports
Mounting
Positions
Mounting
Screws
Mounting
Screws
Mounting
Positions
Mounting
Plate
Mounting
Plate
NOTE: Infinity Back shown with
the large lateral supports
mounted to the upper back
plate and the small lateral sup-
ports mounted to the lower back
plate.
FIGURE 5 - ADJUSTING THE
HEIGHT
Page 17
Part No. 1109923 rev. B
17
Infinity Back Supports
ADJUSTING THE WIDTH (FIGURE 6)
1. Pull UP on the bottom of the back uphol-
stery flap to release the hook and loop
fastener and access the rear of the Infinity
back.
2. Position the user in the wheelchair.
3. Loosen but do not remove the two mount-
ing screws that secure the lateral support
and mounting plate to the Infinity back.
4. Reposition the lateral support to the
desired width adjustment.
5. Hand tighten the two (2) mounting screws
that secure the lateral support and mount-
ing plate to the Infinity back.
6. Repeat steps 2-4 for the remaining lateral
supports which need adjustment.
7. When all lateral support adjustments are
complete, securely tighten all mounting
hardware.
ADJUSTING
SECTION 3
A
D
JU
ST
IN
G
Mounting Plate
Infinity Back
Mounting
Screws
Lateral
Support
FIGURE 6 - ADJUSTING THE
WIDTH
Page 18
CONVERTING DUALFLEX10 HINGES TO FIXED ANGLE
PLATES (FIGURE 1)
NOTE: Refer to theINSTALLATION AND STABILITY WARNINGSin theSAFETY SUMMARY
of this manual.
1. Remove the four (4) EXISTING mounting screws and locknuts securing the DualFlex10
hinge, elastomers and spacers to the back panels as shown in DETAIL "A" of FIGURE 1.
Set EXISTING mounting screws as side.
NOTE: Save the elastomers, spacers and washers for future conversion to dualflex hinges
3. Position the fixed angle plate on the back pannel, aligning the plate mounting holes with
the back panel mounting holes as shown in DETAIL "B" of FIGURE 1.
4. Install the four (4) EXISTING mounting screws and locknuts. Hand tighten the mounting
screws
5. Repeat STEPS 1-4 for opposite hinge.
6. Securely tighten all eight (8) mounting screws and locknuts.
7. Adjust the lateral supports. Refer to ADJUSTING THE LATERAL SUPPORTS in this section of
the manual.
CONVERTING FIXED ANGLE PLATES TO DUALFLEX10
HINGES (FIGURE 1)
NOTE: Refer to theINSTALLATION AND STABILITY WARNINGSin theSAFETY SUMMARY
of this manual.
1. Remove the four (4) EXISTING locknuts and mounting screws securing the fixed angle
plate to the back panels as shown in FIGURE "B" of FIGURE 1. Set EXISTING mounting
screws asside.
2. Align the DualFlex10 hinge two (2) elastomers and four (4) spacers with the four (4)
mounting holes of the two (2) back plates as shown in DETAIL "A" of FIGURE 1.
3. Install the four (4) EXISTING mounting screws and locknuts. Hand tighten.
4. Repeat STEPS 1-4 for opposite hinge.
5. Securely tighten all eight (8) mounting screws and locknuts.
6. Adjust the angle of the hinge. Refer to ADJUSTING THE ANGLE in this section of the
manual.
7. Adjust the lateral supports. Refer to ADJUSTING THE LATERAL SUPPORTS in this section of
the manual.
This Section Includes the Following:
Converting DualFlex10 Hinges to Fixed Angle Plates
Converting Fixed Angle Plates to DualFlex10 Hinges
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure all attach-
ing hardware is tightened securely - otherwise injury or damage may occur.
SECTION 4
DUALFLEX10/FIXED ANGLE PLATE
D
U
A
LFLEX
10/
FIX
ED
A
N
G
LE
P
LA
T
E
Infinity Back Supports
18
Part No. 1109923 Rev . B
Page 19
Mounting Screws
Panel Mounting
Holes
Fixed Angle Plate
Spacers
Mounting
Screws
DualFlex10 Hinge
Hinge Mounting
Holes
Locknuts
Elastomers
Plate Mounting
Holes
Panel Mounting
Holes
DUALFLEX10/FIXED ANGLE PLATE
SECTION 4
FIGURE 1 - CONVERTING DUALFLEX10 HINGES TO FIXED ANGLE
PLATES/CONVERTING FIXED ANGLE PLATES TO DUALFLEX10
HINGES
DETAIL "A"
DETAIL "B"
D
U
A
LFLEX
10/
FIX
ED
A
N
G
LE
PLA
T
E
Back Panel
Back Panel
Locknuts
Back Panel
Back Panel
Part No. 1109923 rev. B
19
Infinity Back Supports
Page 20
REMOVING/INSTALLING THE UPHOLSTERY
REMOVING/INSTALLING THE BACK UPHOLSTERY (FIGURE 1)
NOTE: Reverse this section to install the back upholstery.
1. Pull UP on the bottom of the back upholstery flap to release the hook and loop fastener
and access the rear of the Infinity back.
2. Release the four (4) hook and loop fasteners securing the back upholstery to the Infinity
Back.
3. Remove the back upholstery from the Infinity back.
This Section Includes the Following:
Removing/Installing the Upholstery
Replacing the Cushions
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure all attach-
ing hardware is tightened securely - otherwise injury or damage may occur.
NOTE: Refer to the INSTALLATION AND STABILITY WARNINGS in the GENERAL GUIDELINES of this
manual.
Hook and Loop
Fasteners
Top Flap
Infinity Back
Hook and Loop
Fasteners
Hook and Loop
Fasteners
Hook and
Loop Fasteners
FIGURE 1 - REMOVING/INSTALLING THE BACK UPHOLSTERY
Back Upholstery
SECTION 5
UPHOLSTERY/CUSHIONS
U
P
H
O
LST
ER
Y
/C
U
SH
IO
N
S
Infinity Back Supports
20
Part No. 1109923 Rev . B
Page 21
REMOVING/INSTALLING LATERAL SUPPORT UPHOLSTERY
(FIGURE 1)
NOTE: Reverse this section to install the lateral support cushion..
1 Remove lateral support from the Infinity back. Refer to REMOVING/INSTALLING THE
LATERAL SUPPORTS in SECTION 1 of this manual.
2. Position the lateral support so that the cushion is facing down.
3. Lift up on edge of cushion pocket to release the hook and loop fasteners.
4. Slide the lateral support from the lateral support upholstery.
Lateral
Supports
Hook and Loop
Fastener
Lateral Support
Upholstery
Cushion Pocket
Back Upholstery
Hook and Loop
Fastener
FIGURE 1 - REMOVING/INSTALLING LATERAL SUPPORT
UPHOLSTERY
UPHOLSTERY/CUSHIONS
SECTION 5
U
PH
O
LST
ER
Y
/C
U
SH
IO
N
S
Part No. 1109923 rev. B
21
Infinity Back Supports
Page 22
REPLACING THE CUSHION FOAM
NOTE: Refer to the INSTALLATION AND STABILITY WARNINGS in the GENERAL GUIDELINES of this manual.
REPLACING THE BACK CUSHION (FIGURE 3)
1. Remove the back upholstery from the back panels. Refer to INSTALLING/REMOVING
UPHOLSTERY in this section of the manual.
2. Position the back upholstery on a flat surface.
3. Slide the EXISTING back cushion from the small cushion pocket
4. Slide the EXISTING back cushion from large cushion pocket.
5. Reverse STEPS 3-5 to install the NEW back cushion into the cushion pocket.
6. Install the back upholstery onto the back panels. Refer to INSTALLING/REMOVING
UPHOLSTERY in this section of the manual.
Back Upholstery
Back Cushion
Cushion Pocket (Small)
Cushion Pocket (Large)
FIGURE 3 - REPLACING THE BACK CUSHION
SECTION 5
UPHOLSTERY/CUSHIONS
U
PH
O
LST
ER
Y
/C
U
SH
IO
N
S
Infinity Back Supports
22
Part No. 1109923 Rev . B
Page 23
REPLACING THE LATERAL SUPPORT CUSHION FOAM
(FIGURE 4)
1. Remove the lateral support upholstery from the lateral support. Refer to REMOVING/INSTALLING
THE LATERAL SUPPORT UPHOLSTERY in SECTION 1 of this manual.
2. Position the lateral support upholstery on a flat surface with the pockets facing.
3. Pull up and hold the opening of the large cushion pocket.
4. Remove the tapered end of the EXISTING support cushion from the small cushion pocket of the
lateral support upholstery
5. Slide the EXISTING support cushion from the large cushion pocket of the lateral support
upholstery.
6, Reverse STEPS 3-5 to install the NEW support cushion into the cushion pocket.
7. Reinstall the lateral support upholstery onto the lateral support. Refer to REMOVING/INSTALLING
THE LATERAL SUPPORT UPHOLSTERY in this section of the manual.
Back Upholstery
Support Cushion
Cushion Pocket (Small)
Cushion Pocket (Large)
FIGURE 4 - REPLACING THE LATERAL SUPPORT CUSHION FOAM
UPHOLSTERY/CUSHIONS
SECTION 5
U
PH
O
LST
ER
Y
/C
U
SH
IO
N
S
Part No. 1109923 rev. B
23
Infinity Back Supports
Page 24
Invacare Corporation
www.invacare.com
USA
Canada
One Invacare Way
570 Matheson Blvd E Unit 8
Invacare is a registered trademark of
Elyria, Ohio USA
Mississauga Ontario
Invacare Corporation.
44036-2125
L4Z 4G4 Canada
Yes, you can., Infinity, DualFlex10 and
800-333-6900
800-668-5324
UniBack10 are trademarks of Invacare
Corporation.
© 2003 Invacare Corporation
Part No. 1109923 Rev B- 2/03
LIMITED WARRANTY
PLEASE NOTE: THE WARRANTY BELOW HAS BEEN DRAFTED TO COMPLY WITH
FEDERAL LAW APPLICABLE TO PRODUCTS MANUFACTURED AFTER JULY 4,
1975.
This warranty is extended only to the original purchaser/user of our products.
This warranty gives you specific legal rights and you may also have other legal rights which
vary from state to state.
Invacare warrants its products to be free from defects in materials and workmanship for
use by the original purchaser for a period of two (2) years from the date of purchase on the
back and ninety (90) days from the date of purchase on the cover. If within such warranty
period any such product shall be proven to be defective, such product shall be repaired or
replaced, at Invacare's option. This warranty does not include any labor or shipping charges
incurred in replacement part installation or repair of any such product. Invacare's sole
obligation and your exclusive remedy under this warranty shall be limited to such repair
and/or replacement.
For warranty service, please contact the dealer from whom you purchased your Invacare
product. In the event you do not receive satisfactory warranty service, please write directly
to Invacare at the address at the bottom of this page. Provide dealer’s name, address, date
of purchase, indicate nature of the defect and, if the product is serialized, indicate the serial
number. Do not return products to our factory without our prior consent.
LIMITATIONS AND EXCLUSIONS: THE FOREGOING WARRANTY SHALL NOT
APPLY TO SERIAL NUMBERED PRODUCTS IF THE SERIAL NUMBER HAS BEEN
REMOVED OR DEFACED, PRODUCTS SUBJECTED TO NEGLIGENCE, ACCIDENT,
IMPROPER OPERATION, MAINTENANCE OR STORAGE, COMMERCIAL OR INSTI-
TUTIONAL USE, PRODUCTS MODIFIED WITHOUT INVACARE'S EXPRESS WRIT-
TEN CONSENT INCLUDING, BUT NOT LIMITED TO, MODIFICATION THROUGH
THE USE OF UNAUTHORIZED PARTS OR ATTACHMENTS; PRODUCTS DAMAGED
BY REASON OF REPAIRS MADE TO ANY COMPONENT WITHOUT THE SPECIFIC
CONSENT OF INVACARE, OR TO A PRODUCT DAMAGED BY CIRCUMSTANCES
BEYOND INVACARE'S CONTROL, AND SUCH EVALUATION WILL BE SOLELY
DETERMINED BY INVACARE. THE WARRANTY SHALL NOT APPLY TO PROBLEMS
ARISING FROM NORMAL WEAR OR FAILURE TO ADHERE TO THESE INSTRUC-
TIONS.
THE FOREGOING EXPRESS WARRANTY IS EXCLUSIVE AND IN LIEU OF ANY OTHER
WARRANTIES WHATSOEVER, WHETHER EXPRESS OR IMPLIED, INCLUDING THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, AND THE SOLE REMEDY FOR VIOLATIONS OF ANY WARRANTY
WHATSOEVER, SHALL BE LIMITED TO REPAIR OR REPLACEMENT OF THE
DEFECTIVE PRODUCT PURSUANT TO THE TERMS CONTAINED HEREIN, THE
APPLICATION OF ANY IMPLIED WARRANTY WHATSOEVER SHALL NOT EXTEND
BEYOND THE DURATION OF THE EXPRESS WARRANTY PROVIDED HEREIN.
INVACARE SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL OR INCIDENTAL
DAMAGES WHATSOEVER.
THIS WARRANTY SHALL BE EXTENDED TO COMPLY WITH STATE/PROVINCIAL
LAWS AND REQUIREMENTS.
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