INFINITY
Assembly, Installation and
BACK SUPPORTS
Operation Instructions
SPECIAL NOTES/TABLE OF CONTENTS
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WARNING
THE PROCEDURES IN THIS MANUAL MUST BE PERFORMED
BY AN AUTHORIZED DEALER OR QUALIFIED SERVICE
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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.
SPECIAL NOTES
NOTICE
THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE.
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WARNING/CAUTION notices as used in this manual apply to hazards or unsafe practices
which could result in personal injury or property damage.
SAVE THESE INSTRUCTIONS
TABLE OF CONTENTS
SPECIAL NOTES ..............................................2
SAFETY SUMMARY..........................................3
IMPORTANT INFORMATION ........................... 5
INSTALLATION/ADJUSTMENT OVERVIEW .... 5
PROCEDURE 1 - PREPARING
WHEELCHAIR ................................................6
INSTALLING/REMOVING CANE CLAMPS ........... 6
INSTALLING INSERTS ........................................ 6
PROCEDURE 2 - PREPARING THE INFINITY
BACK FOR INSTALLATION........................... 7
INSTALLING/REMOVING THE
LATERAL SUPPORTS .................................... 7
INSTALLING/REMOVING CUSHIONS ................. 7
ADJUSTING THE MOUNTING HARDWARE ....... 9
PROCEDURE 3 - INSTALLING/REMOVING
THE INFINITY BACK ................................ 10
INSTALLING/REMOVING THE INFINITY BACK .. 10
PROCEDURE 4 - ADJUSTING THE
INFINITY BACK......................................... 11
ADJUSTING CANE CLAMP HEIGHT ................. 11
ADJUSTING THE HINGE/ANGLE
(DUALFLEX ONLY) ..................................... 11
ADJUSTING THE DEPTH HARDWARE ........... 12
ADJUSTING THE LATERAL SUPPORTS ......... 12
PROCEDURE 5 - MAINTENANCE ................. 14
INSTALLING/REMOVING CUSHION FOAM ....... 14
INSPECTION.................................................... 15
CLEANING ....................................................... 15
LIMITED WARRANTY ................. BACK COVER
2
SAFETY SUMMARY
SAFETY SUMMARY
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 base, pelvis 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 procedures in this manual MUST be performed in the following order:
1. Adjusting the Mounting Hardware
2. Adjusting the Hinge/Angle (DUALFLEX ONLY)
3. Adjusting the Depth Hardware
4. Adjusting the Lateral Supports
Ensure the Infinity Back is properly secured to the wheelchair BEFORE using. Upper
mounting pins must sit flush in the upper (swivel) cane clamps for the clamp lock to secure
the Infinity Back to the wheelchair. Lower mounting pins must rest in the groove on the
flange of the lower (fixed) cane clamps. Otherwise changes in seat depth will occur,
making the wheelchair less stable.
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 combination of the fourteen (14) may cause the wheelchair to
decrease in stability. Use EXTREME caution when using a new seating position.
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Seat Height
Back Height
Seat Depth
Back Angle
Seating System
Tilt Angle
Seat Frame Pivot Point
Caster Position
Rear Wheel Size
Rear Wheel Position
User Condition
Wheel Locks
Anti-Tipppers
Locking Collar
Seat Dump
Seat Height
Back Height
Seat Depth
Back Angle
Seating System
Tilt Angle
Seat Frame Pivot Point
Caster Position
Rear Wheel Size
Rear Wheel Position
User Condition
Seat Dump
Locking Collar
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NOTE: When changes to the left hand column occur, follow across the chart and refer to the ✓ procedure
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 wheelchair
owner's manual for these procedures.
3
SAFETY SUMMARY
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SAFETY SUMMARY
STABILITY WARNINGS (CONTINUED)
ALWAYS make sure wheelchair is stable BEFORE reclining the 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 stability.
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.
4
IMPORTANT INFORMATION/INSTALLATION/ADJUSTMENT OVERVIEW
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
INSTALLATION/ADJUSTMENT OVERVIEW (FIGURE 1)
WARNING
For proper installation of the Infinity Back and to reduce the risk of pressure sores, the
adjustment procedures in this manual MUST be performed in the following order:
1. Adjusting the Mounting Hardware
2. Adjusting the Hinge/Angle (DUALFLEX ONLY)
Follow the steps below in order. Refer to the procedure below each step.
STEP 8
Adjust the lateral supports.
STEP 2
Install/remove the
lateral supports.
Refer to
INST ALLING/
REMOVING THE
LA TERAL
SUPPORTS in
PROCEDURE 2
of this manual.
Refer to ADJUSTING
THE LATERAL SUP-
PORTS in PROCEDURE
4 of this manual.
3. Adjusting the Depth Hardware
4. Adjusting the Lateral Supports
STEP 3
Install cushions. Refer to
INSTALLING/REMOVING
CUSHIONS in
PROCEDURE 2
of this manual.
NOTE:
DualFlex
shown.
UniBack not
shown.
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STEP 1
Install the cane
clamps onto the
wheelchair. Refer
to INSTALLING/
REMOVING
CANE CLAMPS in
PROCEDURE 1
of this manual.
STEP 7
Adjust the depth of the Infinity
Back. Refer to ADJUSTING
THE DEPTH HARDWARE in
PROCEDURE 4 of this manual.
FIGURE 1 - INSTALLATION/ADJUSTMENT OVERVIEW
STEP 6
Adjust the hinge/angle of the
Infinity Back. Refer to ADJUST-
ING THE HINGE/ANGLE
(DUALFLEX ONLY) in PRO-
CEDURE 4 of this manual.
5
STEP 4
Adjust the mounting hardware.
Refer to ADJUSTING THE
MOUNTING HARDWARE in
PROCEDURE 2 of this manual.
STEP 5
Install the Infinity Back
Refer to INSTALLING THE
INFINITY BACK in PROCE-
DURE 3 of this manual.
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PROCEDURE 1 PREPARING WHEELCHAIR
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This Procedure includes the following:
R
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Installing/Removing Cane Clamps
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Installing Inserts
R
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INSTALLING/REMOVING CANE
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CLAMPS (FIGURE 1)
W
NOTE: Refer to the INSTALLATION AND STABILITY
H
WARNINGS in the SAFETY SUMMAR Y of this manual.
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Installing Cane Clamps
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DO NOT modify cane clamps to fit 3/4inch tubing. Clamps provided are for 1-
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inch or 7/8-inch tubing ONLY.
WARNING
NOTE: The final positions of the upper (swivel) and lower
(fixed) cane clamps will be determined by the adjustments
made to the Infinity Back to fit the wheelchair and user.
1. Remove existing back upholstery. Refer to wheelchair
owner's manual.
2. Loosen, but do not remove the mounting screw on
the cane clamp with allen wrench provided.
3. Perform one (1) of the following:
UPPER (SWIVEL) CLAMPS - Visually inspect the
clamps to determine whether they are for the RIGHT
or LEFT back cane as shown in FIGURE 1.
NOTE: The upper (swivel) cane clamps are marked
with R for RIGHT and L for LEFT.
NOTE: RIGHT and LEFT are determined by sitting
in the wheelchair.
LOWER (FIXED) CLAMPS - Proceed to STEP 4.
4. Hold the Infinity Back up to the back canes of the wheelchair at the desired mounting height.
5. Visually inspect the location of the mounting pins on
the Infinity Back to determine the proper positions for
each cane clamp.
6. Position the clamp on the back cane at the desired
height so that the open end of the clamp is facing the
REAR of the back cane as shown in FIGURE 1.
7. Torque mounting screw to 45-50 in./lbs.
8. Perform one (1) of the following:
A. If cane clamp holds desired mounting position,
proceed to STEP 9.
B. If cane clamp DOES NOT hold desired mount-
ing position, clamp is too large - refer to INST ALL-
ING INSERTS in this procedure of the manual.
9. Repeat STEPS 2 - 8 for remaining cane clamp(s).
Removing Cane Clamps
1. Remove the Infinity Back from the wheelchair. Refer
to REMOVING THE INFINITY BACK in PROCE-
DURE 3 of this manual.
2. Loosen, but do not remove the mounting screw on
the cane clamp.
3. Remove cane clamp from back cane.
Upper
(Swivel)
Cane
Clamp
Lower
(Fixed) Cane
Clamp
WHEELCHAIR
FRONT
LEFT
Upper
Cane
Clamp
RIGHT
Upper
Cane
Clamp
Mounting
Screw
Back Cane
TOP VIEW
Open End
of Clamp
FIGURE 1 - INSTALLING/REMOVING
CANE CLAMPS
INSTALLING INSERTS (FIGURE 2)
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
NOTE: This procedure should be performed only if cane
clamps are too large for back cane tubing.
1. Loosen the mounting screw in the cane clamp.
NOTE: Mounting screw should be loosened enough to
create space for the insert to fit between the back cane
and the cane clamp.
2. Position one (1) insert onto the back cane near the cane
clamps with the opening facing the front of the wheelchair.
3. Slide the cane clamp over the insert until the clamp
halves surround the insert as shown in FIGURE 2.
4. Torque mounting screw to 45-50 in./lbs.
NOTE: If clamps are still to large for back canes, DO
NOT use. Contact Invacare at the number on the back
page of this manual.
FRONT OF
Clamp
FRONT OF
WHEELCHAIR
Slide Clamp
OVER Insert
Back Cane
SIDE VIEW
FIGURE 2 - INSTALLING INSERTS
Insert
WHEELCHAIR
Clamp
Half
Back
Cane
Insert
TOP VIEW
6
PREPARING THE INFINITY BACK FOR INSTALLATION PROCEDURE 2
This Procedure includes the following:
Installing/Removing the Lateral Supports
Installing/Removing Cushions
Adjusting the Mounting Hardware
INSTALLING/REMOVING THE
LATERAL SUPPORTS (FIGURE 1)
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMAR Y of this manual.
NOTE: The lateral supports include the lateral thoracic supports and the pelvic stabilizers.
Installing
1. Remove the back cushion from the back panel. Refer
to INST ALLING/REMOVING CUSHIONS in this procedure of the manual.
2. Hold one (1) mounting screw with the threads UP.
3. Position the tooth lock washer on the mounting screw.
4. Position the curved washer on the mounting screw so
that the bent portion is TOWARD the head of the mounting screw as shown in FIGURE 1.
5. Position the lateral support in the upper, middle or lower
position, aligning the mounting holes of the support with the
adjustment slot in the Infinity Back as shown in FIGURE 1.
NOTE: The grooves next to the mounting holes in the lateral supports are provided to align supports on either side
of the Infinity Back. Look through the toothed adjustment
slot to see which mounting hole has been used and use the
same mounting hole on the opposite lateral support.
6. Loosely install the mounting screw with washers
through the adjustment slot and into the mounting hole
on the lateral support.
NOTE: It is not necessary to tighten the mounting screws
on the lateral supports at this time. The lateral supports will
be adjusted after the Infinity Back has been installed on the
wheelchair and the user has been evaluated.
7. Repeat STEPS 2-6 for the other mounting screw for
this lateral support.
8. Repeat STEPS 2-7 for the remaining lateral supports.
9. Install the back cushion on the back panel. Refer to
INSTALLING/REMOVING CUSHIONS in this procedure of the manual.
Removing
1. Remove the back cushion from the back panel. Refer
to INST ALLING/REMOVING CUSHIONS in this procedure of the manual.
2. Remove the (2) mounting screws and washers securing the lateral support to the back panel.
3. Remove the lateral support.
4. Repeat STEPS 2-3 for the remaining lateral supports,
if necessary.
5. Install the back cushion on the back panel. Refer to
INSTALLING/REMOVING CUSHIONS in this procedure of the manual.
Lateral Thoracic Support
Back
Grooves
Panel
Mounting
Screw
Grooves
Pelvic Stabilizer
Toothed Adjustment
Slot
Back Panel
Curved Washer
Tooth Lock Washer
FIGURE 1 - INSTALLING/REMOVING THE
LATERAL SUPPORTS
INSTALLING/REMOVING
CUSHIONS (FIGURE 2)
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
CAUTION
The cushion covers are designed to protect the foam against moisture and to provide fire retardency. DO NOT use the back
without the covers. If the covers are torn,
they must be replaced immediately.
Installing/Removing Spinal Insert
INSTALLING.
1. Remove the back cushion from the back panel(s).
Refer to INSTALLING/REMOVING BACK CUSH-
ION in this procedure of the manual.
2. Align the hook and loop fasteners on the spinal insert(s)
and back panel(s).
3. Press the rounded edge of the spinal insert(s) onto the
rounded groove in the back panel(s) to secure.
4. Install the cushion onto the back panel(s). Refer to IN-
STALLING/REMOVING BACK CUSHION in this
procedure of the manual.
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7
PROCEDURE 2
PREPARING THE INFINITY BACK FOR INSTALLATION
REMOVING.
P
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1. Remove the back cushion from the back panel(s).
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Refer to INSTALLING/REMOVING BACK CUSHION in this procedure of the manual.
2. Grasp the spinal insert(s) and pull to release the hook
and loop fasteners.
3. Install the cushion onto the back panel(s). Refer to
INST ALLING/REMOVING BACK CUSHION in this
procedure of the manual.
Installing/Removing Lateral Support
Cushions
B
A
INSTALLING.
C
1. Hold the fastening end of the cushion away from the
K
fastening strip on the support.
2. Insert the support into the pocket on the opposite end
of the cushion as shown in FIGURE 2.
3. Release the fastening end of the cushion.
4. Press the fastening end firmly against the support to
secure.
REMOVING.
1. Grasp the fastening end of the cushion.
2. Pull upwards to release the hook and loop fasteners
as shown in FIGURE 2.
3. Slide the cushion off the support.
Installing/Removing Back Cushion
INSTALLING.
1. Lift the top flap up and pull the bottom flap down on
the back cushion cover.
2. Position the cushion against the back panel(s) with
the flaps on the outside of the Infinity Back.
NOTE: Ensure the lateral supports are positioned between
the back cushion foam and the elastic strips on either
side of the back cushion cover as shown in FIGURE 2.
3. If desired, install the adjustable positioning pad
(UniBack only) onto the back cushion foam. Refer to
INSTALLING/REMOVING CUSHION FOAM in
PROCEDURE 5 of this manual.
4. Close the top and bottom flaps of the back cushion cover
and press the fastening strips together to secure the back
cushion to the Infinity Back as shown in FIGURE 2.
REMOVING.
1. Grasp the top flap and pull up to release the fastening
strips.
2. Grasp the bottom flap and pull down to release the
fastening strips.
3. Grasp the cushion and pull away from the Infinity
Back to remove.
SPINAL INSERT
Rounded Groove
in Back Panel
LATERAL SUPPORT
NOTE: Lateral support
not installed
for clarity.
Lateral Pad
Hook and Loop
Fastening Strips
Fastening
Strips
Pocket
Rounded Edge
Spinal
Inserts
POCKET
END
Support
FASTENING
END
BACK CUSHION
Top Flap
Elastic
Strip
Bottom
Flap
Fastening Strips
(Attach to Back Panel)
Back Cushion
Lateral
Support
Bottom
Flap
Infinity
Back
Fastening
Strips
Top
Flap
FIGURE 2 - INSTALLING/REMOVING CUSHIONS
8
PREPARING THE INFINITY BACK FOR INSTALLATION
PROCEDURE 2
ADJUSTING THE MOUNTING
HARDWARE (FIGURE 3)
NOTE: Refer to the INSTALLATION AND STABILITY
W ARNINGS in the SAFETY SUMMARY of this manual.
1. Hold the Infinity Back up to the back canes at the approximate installation height.
2. Visually inspect each side of the Infinity Back to see if the
width hardware is set at the appropriate height to match
the clamp installation and/or the back cane configuration.
3. Perform one (1) of the following:
CORRECT HEIGHT - Adjust the width of the
width hardware. Refer to ADJUSTING THE
MOUNTING HARDWARE WIDTH in this procedure of the manual.
INCORRECT HEIGHT - Adjust the height of the
width hardware. Refer to ADJUSTING THE
MOUNTING HARDWARE HEIGHT in this procedure of the manual.
Adjusting the Mounting Hardware Height
4. If necessary, loosen, but do not remove the two (2)
mounting screws securing each upper width bracket
to the back frame.
5. Slide the upper width brackets IN or OUT until the
mounting pins fit flush into both upper (swivel) cane
clamps and the depth hardware touches the cane
clamps as shown in FIGURE 3.
6. Install the Infinity Back onto the wheelchair. Refer
to INSTALLING/REMOVING THE INFINITY
BACK in PROCEDURE 3 of this manual.
7. Torque the two (2) mounting screws on each of the
four (4) width brackets to 45-50 in./lbs. to secure them
at the appropriate adjustment point.
Mounting Pin
Back
Cane
Depth
Depth
Hardware
Hardware
Mounting
Pin
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P
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1. Remove the two (2) mounting screws from the width
bracket.
2. Align the opening in the width bracket with either the
UPPER or LOWER set of mounting holes.
3. Loosely install the two (2) mounting screws into the
desired set of mounting holes as shown in FIGURE 3.
4. Adjust the width of the Infinity Back. Refer to ADJUST-
ING THE MOUNTING HARDWARE WIDTH in this
procedure of the manual.
Adjusting the Mounting Hardware Width
1. Hold the Infinity Back up to the back canes at the approximate installation height.
CAUTION
There should be a gap no larger than
1/16-inch between the depth hardware
and the cane clamps, otherwise damage
to the Infinity Back may occur. (FIGURE 3)
2. Visually inspect each side of the Infinity Back to see if
the depth hardware touches the cane clamps on both
back canes as shown in FIGURE 3.
3. Perform one (1) of the following:
CORRECT WIDTH - Proceed to STEP 6.
INCORRECT WIDTH - Proceed to STEP 4.
UPPER (SWIVEL)
CANE CLAMP
LOWER (FIXED)
CANE CLAMP
SLIDE
Width
Bracket IN
or OUT
Mounting Screws
Mounting Pin
Depth
Hardware
UPPER
Mounting
Holes
NOTE:
Lower
mounting
pin not
shown for
clarity.
LOWER
Mounting
Holes
FIGURE 3 - ADJUSTING THE WIDTH
HARDWARE
UPPER
Width
Bracket
LOWER
Width
Bracket
Mounting
Screws
9
PROCEDURE 3
INSTALLING/REMOVING THE INFINITY BACK
I
This Procedure includes the following:
N
S
Installing/Removing the Infinity Back
T
A
INSTALLING/REMOVING THE
L
L
INFINITY BACK (FIGURE 1)
I
N
NOTE: Refer to the INSTALLATION AND STABILITY
G
WARNINGS in the SAFETY SUMMARY of this manual.
/
R
Installing the Infinity Back
E
M
1. Ensure the four (4) cane clamps are securely installed on
O
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the wheelchair frame. Refer to INST ALLING/REMOVING CANE CLAMPS in PROCEDURE 1 of this manual.
2. If necessary, adjust the mounting hardware to fit the back
canes. Refer to ADJUSTING THE MOUNTING
HARDWARE in PROCEDURE 2 of this manual.
3. Position the lower mounting pins between the lower
(fixed) cane clamp flanges and the back canes. The
mounting pins should be aligned with the groove in
the flange as shown in FIGURE 1.
4. Ensure the upper mounting pins are positioned on
top of the upper (swivel) cane clamps.
5. Twist the clamp locks on the upper (swivel) cane
clamps to the open position shown in FIGURE 1.
NOTE: Opening the clamp locks will cause the mounting
pins to slide down into the upper (swivel) cane clamps.
6. Ensure the clamps locks on the upper (swivel)
cane clamps are in the closed position shown in
FIGURE 1. If necessary, close the clamp locks.
NOTE: It may be necessary to adjust the cane clamp
height. Refer to ADJUSTING CANE CLAMP
HEIGHT in PROCEDURE 4 of this manual.
Back
Upper
(Swivel)
Cane
Clamp
Cane
Clamp
Lock
Mounting
Pin
7. Ensure all cushions and lateral supports have been in-
stalled. Refer to PROCEDURE 2 - PREP ARING THE
INFINITY BACK FOR INST ALLATION in this manual.
8. Position the user into the wheelchair to determine which
adjustments need to be made to properly fit the Infinity
Back. Refer to the wheelchair owner's manual.
9. Remove the user from the wheelchair. Refer to the wheelchair owner's manual.
10. Perform the following procedures to adjust the Infinity Back to fit the wheelchair and the user if necessary. Refer to PROCEDURE 4 - ADJUSTING THE
INFINITY BACK in this manual.
A . ADJUSTING THE HINGE/ANGLE (DUALFLEX
ONL Y)
B. ADJUSTING THE DEPTH HARDW ARE
C. ADJUSTING THE LATERAL SUPPORTS
NOTE: Perform the above procedures in the order listed.
11. Inspect all mounting screws to ensure ALL hardware
has been tightened securely. Torque to 45-50 in./lbs.
12. Position the user in the wheelchair. Refer to the wheelchair owner's manual.
13. Visually inspect the user, the back and the wheelchair to
ensure all adjustments have been properly made.
14. If necessary, repeat STEPS 9-13 until the user is com-
fortable.
Removing the Infinity Back
NOTE: The wheelchair should be unoccupied for this procedure.
1. Twist the upper (swivel) cane clamp locks in the open
position to release the upper mounting pins (FIGURE 1).
2. Lift the Infinity Back upwards to remove the lower mounting pins from the lower (fixed) cane clamps.
UPPER
(SWIVEL)
CANE
CLAMP
Clamp Lock in
OPEN Position
Groove
Flange
Mounting
Pin
Back
Cane
Lower (Fixed)
Cane Clamp
Installed DualFlex
Infinity Back
(UNIBACK NOT
SHOWN)
Clamp Lock in
FIGURE 1 - INSTALLING/REMOVING THE INFINITY BACK
10
CLOSED
Position
TOP
VIEW
ADJUSTING THE INFINITY BACK PROCEDURE 4
This Procedure includes the following:
Adjusting Cane Clamp Height
Adjusting the Hinge/Angle (DualFlex ONL Y)
Adjusting the Depth Hardware
Adjusting the Lateral Supports
WARNING
For proper installation of the Infinity Back
and to reduce the risk of pressure sores,
the adjustment procedures below MUST be
performed in the following order:
1. Adjusting the Mounting Hardware
2. Adjusting the Hinge/Angle
(DUALFLEX ONLY)
3. Adjusting the Depth Hardware
4. Adjusting the Lateral Pads
NOTE: To simplify the adjustment procedures, remove
the back from the wheelchair. Refer to INSTALLING/
REMOVING THE INFINITY BACK in PROCEDURE 3
of this manual.
NOTE: After performing each procedure, reinstall the back,
place the user in the wheelchair and inspect to ensure the
correct adjustments have been made for user comfort. If necessary, repeat the procedure until the user is comfortable.
ADJUSTING THE HINGE/ANGLE
(DUALFLEX ONLY)
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMAR Y of this manual.
NOTE: The following procedures apply to the DualFlex
ONLY. If installing/adjusting a UniBack proceed to ADJUST-
ING THE LATERAL PADS in this procedure of the manual.
NOTE: Both hinges should be adjusted to have fixed
angles OR both hinges should be adjusted to have Dynamic Flex angles.
Adjusting the Angle (FIGURE 2)
1. Loosen the adjustment screws on both hinges.
2. Grasp and hold the top of the upper back panel and
bottom of the lower back panel.
3. Push or pull to adjust the angle of the back to the
desired angle.
4. Torque the adjustment screws on both hinges to 4550 in./lbs.
5. Install the Infinity Back onto the wheelchair. Refer
to INSTALLING/REMOVING THE INFINITY
BACK in PROCEDURE 3 of the manual.
6. Adjust the lateral supports. Refer to ADJUSTING THE
LATERAL SUPPORTS in this procedure of the manual.
A
D
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T
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ADJUSTING CANE CLAMP HEIGHT
(FIGURE 1)
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
1. Loosen the mounting screw on the cane clamp.
2. Slide the cane clamp and if necessary, the insert inside
the cane clamp, up or down to the desired position.
3. Torque the mounting screw to 45-50 in./lbs.
4. Repeat STEPS 1-3 for the remaining clamps, if
necessary.
Upper (Swivel)
Cane Clamp
Adjust Cane
Clamps UP
or DOWN
FIGURE 1 - ADJUSTING CANE CLAMP
HEIGHT
Mounting Screw
Back Cane
Lower (Fixed)
Cane Clamp
Mounting Screw
UPPER
Back Panel
LOWER
Back Panel
Hinge
Adjustment
Screw
FIGURE 2 - ADJUSTING THE HINGE
(DUALFLEX ONLY) - ADJUSTING THE ANGLE
Converting Dynamic Flex Hinges to Fixed
Angle Hinges (FIGURE 3)
1. Remove the four (4) long mounting screws securing
the hinge to the back panels.
2. Remove the elastomers, spacers and washers.
NOTE: Save the long mounting screws, elastomers, spacers and washers for future conversion to Dynamic Flex.
3. Position the hinge on the back, aligning the hinge
mounting holes with the back panel mounting holes
as shown in FIGURE 3.
4. Install the four (4) short mounting screws. Torque to 4550 in./lbs.
5. Repeat STEPS 1-4 for opposite hinge.
6. Adjust the angle of the hinge. Refer to ADJUSTING
THE ANGLE in this procedure of the manual.
7. Adjust the lateral supports. Refer to ADJUSTING THE
LA TERAL SUPPORTS in this procedure of the manual.
11
ADJUSTING THE INFINITY BACKPROCEDURE 4
Converting Fixed Angle Hinges to Dynamic
Flex Hinges (FIGURE 3)
1. Remove the four (4) short mounting screws securing the
A
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hinge to the back panels.
NOTE: Save the short mounting screws for future conversion
to fixed angle hinges.
2. Position the elastomers, spacers and washers as shown
in FIGURE 3.
NOTE: Ensure all mounting holes are aligned.
3. Align the hinge with the mounting holes on each back panel.
4. Install the four (4) long mounting screws. Torque to 45-50
in./lbs.
5. Adjust the lateral supports. Refer to ADJUSTING THE
LA TERAL SUPPORTS in this procedure of the manual.
Back
Panel
Mounting
Holes
Washer
Spacer
Elastomer
Hinge
Depth
Bracket
Mounting Screw
Width
Bracket
Mounting Hole
Adjustment
Hole
FIGURE 4 - ADJUSTING THE DEPTH
HARDWARE
ADJUSTING THE LATERAL
SUPPORTS (FIGURE 5)
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
NOTE: Lateral supports include the lateral thoracic supports and the pelvic stabilizers.
Hinge Mounting
Hole
Mounting Screws
FIGURE 3 - ADJUSTING THE HINGE
(DUALFLEX ONLY) - CONVERTING HINGES
ADJUSTING THE DEPTH
HARDWARE (FIGURE 4)
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMAR Y of this manual.
1. Ensure all cushions have been installed on the Infinity
Back. Refer to INSTALLING/REMOVING CUSHIONS
in PROCEDURE 2 of this manual.
2. Hold the Infinity Back up to the wheelchair.
3. Visually inspect the Infinity Back and the wheelchair
to determine the desired depth.
4. Loosen the mounting screw in the depth bracket.
5. Slide the depth bracket until the mounting screw is
positioned in the desired adjustment hole.
NOTE: The width bracket has two (2) mounting holes. It
may be necessary to move the mounting screw to the
other hole to achieve the desired depth.
6. Torque mounting screw to 45-50 in./lbs. to secure depth
bracket to width bracket.
7. Perform one (1) of the following:
DUALFLEX - Adjust the hinge and/or angle of the back,
if present. Refer to ADJUSTING THE HINGE/ANGLE
in this procedure of the manual.
UNIBACK - Proceed to ADJUSTING THE LA TERAL
SUPPORTS in this procedure of the manual.
Adjusting the Width
1. Visually inspect the orientation of one (1) curved
washer on one (1) lateral support.
2. Perform one (1) of the following:
A. Curved washer oriented as shown in DETAIL
"A" of FIGURE 5 - Perform the following steps:
a. Loosen, but do not remove the mounting
screw.
b. Proceed to STEP 3.
B. Curved washer oriented as shown in DETAIL
"B" of FIGURE 5 - Perform the following steps:
a. Hold the mounting screw with the threads
UP.
b. Position the tooth lock washer on the
mounting screw.
c. Position the curved washer on the mount-
ing screw so that the bent portion is TOWARD the head of the mounting screw
as shown in DET AIL "A" of FIGURE 5.
d. Loosely install the mounting screw with
washers through the adjustment slot and
into the lateral support.
3. Repeat STEPS 1-2 for the other mounting screw
on the same lateral support.
4. Repeat STEPS 1-3 for the remaining lateral supports which need adjustment.
5. Position the user in the wheelchair.
12
PROCEDURE 4ADJUSTING THE INFINITY BACK
6. Slide one (1) lateral support to the desired location.
7. Visually inspect the adjustment slot to find proper location for the curved washer.
8. Remove one (1) mounting screw, tooth lock washer
and curved washer.
9. Hold the mounting screw with the threads UP.
10. Position the tooth lock washer on the mounting screw.
11. Position the curved washer on the mounting screw
so that the bent portion is toward the threaded end of
the mounting screw.
12. Install the mounting screw with washers through the
toothed adjustment slot and into the lateral support.
13. Torque the mounting screw to 45-50 in./lbs., ensuring the curved washer is seated properly in the
toothed adjustment slot shown in FIGURE 5.
14. Repeat STEPS 8-13 for the remaining mounting
screw on the lateral support.
15. Repeat STEPS 6-14 for the remaining lateral supports.
Adjusting the Height
NOTE: Both sets of lateral supports can be adjusted to
three (3) different height positions.
1. Remove the two (2) mounting screws, tooth lock washers and curved washers securing the lateral support to
the Infinity Back.
2. Hold one (1) mounting screw with the threads UP.
3. Position the tooth lock washer on the mounting screw.
4. Position the curved washer on the mounting screw so
that the bent portion is TOWARD the head of the mounting screw as shown in DETAIL "A" of FIGURE 5.
5. Repeat STEPS 2-4 for the remaining mounting screw
and washers.
6. Position the lateral support in the upper, middle or lower
position, aligning the mounting holes of the support with
the adjustment slot in the Infinity Back as shown in DE-
T AIL "B" of FIGURE 5.
NOTE: The grooves next to the mounting holes in the
lateral support are provided to align lateral supports on
either side of the Infinity Back. Look through the toothed
adjustment slot to see which mounting hole has been used
and use the corresponding mounting hole on the opposite lateral support if desired.
7. Loosely install the two (2) mounting screws and washers
to secure the supports to the back as shown in DET AIL
"B" of FIGURE 5.
NOTE: The curved washer should be facing away from
the Infinity Back for ease of adjustment.
8. Adjust the width of the lateral supports. Refer to ADJUST-
ING THE WIDTH in this procedure of the manual.
DETAIL "A"
Curved
Washer
Tooth Lock Washer
Toothed Adjustment Slot
Mounting
Screws
DETAIL "B"
Lateral Thoracic Support
Grooves
Grooves
Hip Guide
Toothed Adjustment
Slot
Back Panel
Curved Washer
Lateral Thoracic
Support
Hip
Guides
Toothed Adjustment Slot
UPPER
Back
Panel
LOWER
Back Panel
LOOSEN
Mounting
Screws and
SLIDE Lateral
FIGURE 5 - ADJUSTING THE LATERAL
SUPPORTS
A
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Back
Panel
Mounting
Screw
Washer
Mounting
Screws
Washers
Pads
13
PROCEDURE 5
MAINTENANCE
This Procedure includes the following:
M
Installing/Removing Cushion Foam
A
Inspection
I
Cleaning
N
T
INSTALLING/REMOVING
E
CUSHION FOAM
N
NOTE: Refer to the INSTALLATION AND STABILITY
A
WARNINGS in the SAFETY SUMMARY of this manual.
N
C
Installing/Removing Back Cushion Foam
E
(FIGURE 1)
INSTALLING.
1. Remove the back cushion from the back panel(s).
Refer to INSTALLING/REMOVING CUSHIONS in
PROCEDURE 2 of this manual.
2. Position the back cushion on a flat surface.
3. Pull the top flap UP and the bottom flap DOWN.
4. Slide the top of the cushion foam inside the cushion
cover.
5. Ensure the bottom and sides of the cushion foam
are behind the elastic strips on either side of the
cushion cover.
6. Install the cushion onto the Infinity Back. Refer to IN-
STALLING/REMOVING CUSHIONS in PROCE-
DURE 2 of this manual.
REMOVING.
1. Remove the back cushion from the back panel(s).
Refer to INSTALLING/REMOVING CUSHIONS in
PROCEDURE 2 of this manual.
2. Pull the top flap UP and the bottom flap DOWN.
3. Grasp the cushion foam and remove it from the back
cover.
Top of
Back
Cover
Elastic
Strip
Bottom
Flap
Top Flap
Top of Cushion
Back
Cushion
Foam
Foam
Installing/Removing Lateral Support
Cushion Foam (FIGURE 2)
INSTALLING.
1. Remove the lateral support cushion from the lateral
support. Refer to INST ALLING/REMOVING CUSH-
IONS in PROCEDURE 2 of this manual.
2. Position the cushion cover on a flat surface with the
pocket facing UP as shown in FIGURE 2.
3. Pull up and hold the upper flap.
4. Slide the larger end of the cushion foam into the opening in the cushion cover.
5. Pull down and hold the lower flap.
6. Insert the tapered end of the cushion foam into the
cushion cover.
REMOVING.
1. Remove the lateral support cushion from the lateral
support. Refer to INST ALLING/REMOVING CUSH-
IONS in PROCEDURE 2 of this manual.
2. Position the cushion cover as shown in FIGURE 2.
3. Pull up and hold the upper flap on the pocket side of
the cushion cover.
4. Pull down the lower flap.
5. Grasp the cushion foam and remove it from the cushion cover.
Pocket (Insert
Lateral Support)
Upper
Flap
Lower Flap
Fastening Strip
(Attach to Lateral
Opening
(Insert
Cushion
Foam)
Support)
Tapered
End of
Cushion
Foam
Cushion
Cover
FIGURE 1 - REMOVING/INSTALLING
BACK CUSHION FOAM
FIGURE 2 - REMOVING/INSTALLING
LATERAL SUPPORT CUSHION FOAM
14
MAINTENANCE
PROCEDURE 5
Installing/Removing Adjustable Positioning
Pad (UNIBACK ONLY) (FIGURE 3)
INSTALLING.
1. Lift the top flap up and pull the bottom flap down on the
back cushion cover.
2. Grasp the cushion and pull upwards to remove the
cushion from the back.
3. Align the fastening strips on the adjustable positioning
pad with the fastening strips on the back cushion foam
as shown in FIGURE 3.
4. Press the adjustable positioning pad firmly against
the back cushion foam to secure.
5. Install the back cushion onto the Infinity Back. Refer to
INST ALLING/REMOVING CUSHIONS in PROCE-
DURE 2 of this manual.
NOTE: The adjustable positioning pad may be adjusted
to different heights according to the needs of the user.
It may be necessary to trim the adjustable positioning
pad to fit the wheelchair or the user.
NOTE: It may be necessary to place the user in the
wheelchair with the back cushion installed to determine
the final location of the adjustable positioning pad.
INSPECTION
WARNING
DO NOT continue to use this product if
any of the following problems as described are discovered. Corrective maintenance can be performed at or arranged through your equipment supplier.
1. Initially and once a week, visually inspect all parts,
including hardware, upholstery materials, foams (if
accessible), and plastics for deformation, corrosion,
breakage, wear and/or compression.
2. Check ALL fasteners weekly to ensure that mechanical connections are secure.
WARNING
Skin condition should be checked very frequently after the installation and use of any
new seating system.
CLEANING
Cover
1. Machine wash the covers once a week.
M
A
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E
N
A
N
C
E
REMOVING.
1. Lift the top flap up and pull the bottom flap down on the
back cushion cover.
2. Grasp the cushion and pull upwards to remove the
cushion from the back.
3. Grasp the adjustable positioning pad and pull to release the fastening strips.
4. Install the back cushion onto the Infinity Back. Refer to
INST ALLING/REMOVING CUSHIONS in PROCE-
DURE 2 of this manual.
Back
Cushion
Back
Cushion
Foam
Bottom Flap
Top Flap
Adjustable
Positioning
Pad
Fastening
Strips
CAUTION
MACHINE WASH back cover and lateral
support covers in cold water on gentle
cycle using a mild detergent. DO NOT use
fabric softeners or bleach. DO NOT machine dry. Air dry ONLY. DO NOT dry in sun.
Foam
If the back cushion foam becomes contaminated because
of moisture, the back cushion should be replaced immediately.
FIGURE 3 - INSTALLING/REMVOING
ADJUSTABLE POSITIONING PAD
(UNIBACK ONLY)
15
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 INSTITUTIONAL USE, PRODUCTS MODIFIED WITHOUT INVACARE'S
EXPRESS WRITTEN 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 INSTRUCTIONS.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS WARRANTIES. IMPLIED WARRANTIES, IF ANY, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL NOT EXTEND BEYOND THE DURATION OF THE EXPRESSED WARRANTY PROVIDED HEREIN AND THE REMEDY FOR VIOLATIONS
OF ANY IMPLIED WARRANTY SHALL BE LIMITED TO REPAIR OR REPLACEMENT OF THE DEFECTIVE PRODUCT PURSUANT TO THE TERMS CONTAINED 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.
INVACARE CORPORATION l ONE INVACARE WAY l P.O. Box 4028 l Elyria, Ohio 44036-2125
Phone 1-(800)-333-6900 l Technical Support 1-800-832-4707
INV ACARE CANADA l 5970 Chedworth Way l Mississauga, Ontario, L5R 3T9 l Canada
Phone (905) 890-8838
Form No. 99-104 Part No. 1077719 Rev. A. (1)-3/99 Printed in U.S.A.
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