™
INFINITY BACK SUPPORTS
Assembly, Installation and
Operation Instructions
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SAFETY SUMMARY
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SAFETY SUMMARY
NOTE: Check all parts for shipping damage. In case of damage, DO NOT use. Contact your Dealer for further instruction.
INSTALLATION WARNINGS
Sta b ilize from the g round up . A sta b le b a se , p e lvis a nd footre sts a re re q uire m e nts for a ny
torso p ositioning syste m .
For p rop e r insta lla tion of the Infinity Ba c k a nd to re d uc e the risk of p re ssure sore s, the
a djustm e nt proc e dure s in this m a nua l MUST be pe rform e d in the following orde r:
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1. Ad justing the Mo unting Ha rd wa re
2. Ad justing the Hing e / Ang le (DUALFLEX ONLY)
3. Ad justing the De p th Ha rd wa re
4. Ad justing the La te ra l Sup p o rts
Ensure the Infinity Ba c k is p ro p e rly se c ure d to the whe e lc ha ir BEFORE using . Up p e r
mounting pins must sit flush in the uppe r (swive l) c a ne c la mps for the c la mp loc k to se c ure
the Infinity Ba c k to the whe e lc ha ir. Lowe r m ounting p ins m ust re st in the g ro o ve o n the
fla ng e of the lowe r (fixe d ) c a ne c la m p s. Othe rwise c ha ng e s in se a t d e p th will oc c ur,
m a king the whe e lc ha ir le ss sta b le .
Afte r ANY a d justm e nts, re p a ir or se rvic e a nd BEFORE use , m a ke sure a ll a tta c hing ha rd -
wa re is tig hte ne d se c ure ly - othe rwise injury or d a m a g e m a y oc c ur.
STABILITY WARNINGS
The se a t he ig ht, se a t d e p th, b a c k he ig ht, tilt a ng le , b a c k a ng le , p ivot p oint of se a t fra m e ,
se a ting syste m, c a ste r position, size a nd position of the re a r whe e ls, whe e l loc ks, a nti-tippe rs,
loc king c olla r a s we ll a s the use r c ondition dire c tly re la te to the sta bility of the whe e lc ha ir.
Any c ha nge to one (1) or a ny c ombina tion of the fourte e n (14) ma y c a use the whe e lc ha ir to
de c re a se in sta bility. Use EXTREME c a ution whe n using a ne w se a ting position.
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
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
G
Locking Collar
G
NOTE: When changes to the left hand column occur, follow across the chart and refer to the GGprocedure
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
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SAFETY SUMMARY
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SAFETY SUMMARY
STABILITY WARNINGS (CONTINUED)
ALWAYS ma ke sure whe e lc ha ir is sta ble BEFORE re c lining the ba c k syste m. Re a r whe e ls ma y
ha ve to b e re p ositione d re a rwa rd d e p e nd ing on the d e g re e of re c line . ALWAYS e nsure
sta bility BEFORE using ma ximum a mount of re c line . TEST whe e lc ha ir BEFORE it is oc c upie d by
e nd use r to e nsure sta b ility.
To m a inta in the sta b ility of the whe e lc ha ir whe n m oving the re a r whe e ls to ANY forwa rd
p osition, the a m ount of re c line MUST b e lim ite d to p re ve nt the whe e lc ha ir from tip p ing
onto the a nti-tip p e rs.
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The ne c e ssa ry b a c k a ng le MUST b e se le c te d BEFORE re p ositioning re a r whe e ls forwa rd .
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 POSI-
TIONING 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 c ondition should be c he c ke d ve ry fre que ntly a fte r the insta lla tion a nd use of a ny ne w
se a ting syste m .
4
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IMPORTANT INFORMATION/INSTALLATION/ADJUSTMENT OVERVIEW
IMPORTANT INFORMATION
Thebestwaytoavoidproblemsrelatedtopressuresores All cushions should be selected carefully. Working with
is to understand their causes and your role in a skin man- your therapist, physician and equipment supplier is the
agement program.
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best way to assure that a cushion choice matches your
individualneeds.
Your therapist and physician should be consulted if you
haveanyquestionsregardingweightrelief, self-examina- As the needs of the client become more complex, the
tion of skin, or individual limitations and needs. cushion evaluation becomes more important.
INSTALLATION/ ADJ USTMENT OVERVIEW
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INSTALLATION/ ADJ USTMENT OVERVIEW (FIGURE 1)
WARNING
For p rop e r insta lla tion of the Infinity Ba c k a nd to re d uc e the risk of p re ssure sore s, the
a djustm e nt proc e dure s in this m a nua l MUST be pe rform e d in the following orde r:
3. Ad justing the De p th Ha rd wa re
4. Ad justing the La te ra l Sup p o rts
1. Ad justing the Mo unting Ha rd wa re
2. Ad justing the Hing e / Ang le (DUALFLEX ONLY)
Follow the steps below in order. Refer to the procedure below each step.
STEP 8
Adjust the lateral supports.
Refer to ADJUSTING
THE LATERAL SUP-
PORTS in PROCEDURE
STEP 3
Install cushions. Refer to
INSTALLING/REMOVING
CUSHIONS in
STEP 2
Install/remove the
lateral supports.
PROCEDURE 2
of this manual.
4 of this manual.
Refer to
NOTE:
DualFlex
shown.
UniBack not
shown.
INSTALLING/
REMOVING THE
LATERAL
SUPPORTS in
PROCEDURE 2
of this manual.
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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 4
E
W
Adjust the mounting hardware.
Refer to ADJUSTING THE
MOUNTING HARDWARE in
PROCEDURE 2 of this manual.
STEP 6
STEP 7
Adjust the hinge/angle of the
Infinity Back. Refer to ADJUST-
ING THE HINGE/ANGLE
(DUALFLEX ONLY) in PRO-
CEDURE 4 of this manual.
STEP 5
Install the Infinity Back
Refer to INSTALLING THE
INFINITY BACK in PROCE-
DURE 3 of this manual.
Adjust the depth of the Infinity
Back. Refer to ADJUSTING
THE DEPTH HARDWARE in
PROCEDURE 4 of this manual.
FIGURE 1 - INSTALLATION/ ADJUSTMENT OVERVIEW
5
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PROCEDURE 1
PREPARING WHEELCHAIR
Rem oving Cane Clam ps
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This Procedure includes the following:
Installing/Removing Cane Clamps
InstallingInserts
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.
INSTALLING/ REMOVING CANE
CLAMPS (FIGURE 1)
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3. Remove cane clamp from back cane.
WHEELC HAIR
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NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
Upper
Lower
(Fixed) Cane
Clamp
FRO NT
(Swivel)
LEFT
Upper
Cane
RIGHT
Upper
Cane
Cane
Clamp
Installing Cane Clam ps
WARNING
Clamp
Clamp
DO NOT m o d ify c a ne c la m p s to fit 3/ 4-
inc h tub ing . Cla m p s p ro vid e d a re fo r 1-
inc h or 7/ 8-inc h tub ing ONLY.
R
NOTE: The final positions of the upper (swivel) and lower
(fixed)caneclampswillbedeterminedbytheadjustments
made to the Infinity Back to fit the wheelchair and user.
Mounting
Screw
Open End
of Clamp
Back Cane
1. Removeexistingbackupholstery. Refertowheelchair
owner's manual.
TOP VIEW
FIGURE 1 - INSTALLING/ REMOVING
CANE CLAMPS
2. Loosen, but do not remove the mounting screw on
the cane clamp with allen wrench provided.
INSTALLING INSERTS (FIGURE 2)
3. Perform one (1) of the following:
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
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: This procedure should be performed only if cane
clamps are too large for back cane tubing.
NOTE: The upper (swivel) cane clamps are marked
with R for RIGHT and L for LEFT.
1. Loosen the mounting screw in the cane clamp.
NOTE: RIGHT and LEFT are determined by sitting
inthewheelchair.
NOTE: Mounting screw should be loosened enough to
create space for the insert to fit between the back cane
and the cane clamp.
LOWER (FIXED) CLAMPS - Proceed to STEP 4.
2. Position one (1) insert onto the back cane near the cane
clampswiththeopeningfacingthefrontofthewheelchair.
4. HoldtheInfinityBackuptothebackcanesofthewheel-
chair at the desired mounting height.
3. Slide the cane clamp over the insert until the clamp
5. Visually inspect the location of the mounting pins on
the Infinity Back to determine the proper positions for
each cane clamp.
halves surround the insert as shown in FIGURE 2.
4. Torque mounting screw to 45-50 in./lbs.
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.
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
WHEELC HAIR
7. Torque mounting screw to 45-50 in./lbs.
8. Perform one (1) of the following:
Clamp
FRONT OF
WHEELCHAIR
A. If cane clamp holds desired mounting position,
Clamp
Half
proceed to STEP 9.
B. If cane clamp DOES NOT hold desired mount-
ingposition, clampistoolarge-refertoINSTALL-
ING INSERTS in this procedure of the manual.
Slide Clamp
OVER Insert
Back
Cane
Insert
9. Repeat STEPS 2 - 8 for remaining cane clamp(s).
Back Cane
Insert
SIDE VIEW
TOP VIEW
FIGURE 2 - INSTALLING INSERTS
6
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PREPARING THE INFINITY BACK FOR INSTALLATION
PROCEDURE 2
3. Remove the lateral support.
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This Procedure includes the following:
Installing/Removing the Lateral Supports
Installing/Removing Cushions
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 pro-
cedure of the manual.
Adjusting the Mounting Hardware
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INSTALLING/ REMOVING THE
LATERAL SUPPORTS (FIGURE 1)
Lateral Thoracic Support
Back
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NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
Panel
Grooves
NOTE:Thelateralsupportsincludethelateralthoracicsup-
ports and the pelvic stabilizers.
B
A
C
K
Mounting
Screw
Installing
1. Remove the back cushion from the back panel. Refer
to INSTALLING/REMOVING CUSHIONS in this pro-
cedure of the manual.
Grooves
2. Hold one (1) mounting screw with the threads UP.
3. Position the tooth lock washer on the mounting screw.
Pelvic Stabilizer
4. Position the curved washer on the mounting screw so
thatthebentportionisTOWARDtheheadofthemount-
ing screw as shown in FIGURE 1.
Toothed Adjustment
Slot
Back Panel
5. Position the lateral support in the upper, middle or lower
position,aligningthemountingholesofthesupportwiththe
adjustmentslotintheInfinityBackasshowninFIGURE1.
Curved Washer
Tooth Lock Washer
FIGURE 1 - INSTALLING/ REMOVING THE
LATERAL SUPPORTS
NOTE: The grooves next to the mounting holes in the lat-
eral supports are provided to align supports on either side
of the Infinity Back. Look through the toothed adjustment
slottoseewhichmountingholehasbeenusedandusethe
same mounting hole on the opposite lateral support.
INSTALLING/ REMOVING
CUSHIONS (FIGURE 2)
6. Loosely install the mounting screw with washers
throughtheadjustmentslotandintothemountinghole
on the lateral support.
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
C AUTIO N
NOTE: It is not necessary to tighten the mounting screws
on the lateral supports at this time. The lateral supports will
beadjustedaftertheInfinityBackhasbeeninstalledonthe
wheelchair and the user has been evaluated.
The c ushio n c o ve rs a re d e sig ne d to p ro -
te c t the foa m a g a inst m oisture a nd to p ro-
vid e fire re ta rd e nc y. DO NOT use the b a c k
witho ut the c o ve rs. If the c o ve rs a re to rn,
the y m ust b e re p la c e d im m e d ia te ly.
7. Repeat STEPS 2-6 for the other mounting screw for
this lateral support.
Installing/ Rem oving Spinal Insert
8. Repeat STEPS 2-7 for the remaining lateral supports.
INSTALLING.
9. Install the back cushion on the back panel. Refer to
INSTALLING/REMOVING CUSHIONS in this pro-
cedure of the manual.
1. Remove the back cushion from the back panel(s).
Refer to INSTALLING/REMOVING BACK CUSH-
ION in this procedure of the manual.
2. Alignthehookandloopfastenersonthespinalinsert(s)
and back panel(s).
Rem oving
1. Remove the back cushion from the back panel. Refer
to INSTALLING/REMOVING CUSHIONS in this pro-
cedure of the manual.
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.
2. Remove the (2) mounting screws and washers se-
curing the lateral support to the back panel.
7
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PROCEDURE 2
PREPARING THE INFINITY BACK FOR INSTALLATION
3. Slide the cushion off the support.
REMOVING.
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1. Remove the back cushion from the back panel(s).
Refer to INSTALLING/REMOVING BACK CUSH-
ION in this procedure of the manual.
Installing/ Rem oving Back Cushion
INSTALLING.
2. Graspthespinalinsert(s)andpulltoreleasethehook
and loop fasteners.
1. Lift the top flap up and pull the bottom flap down on
the back cushion cover.
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3. Install the cushion onto the back panel(s). Refer to
INSTALLING/REMOVING BACK CUSHION in this
procedure of the manual.
2. Position the cushion against the back panel(s) with
the flaps on the outside of the Infinity Back.
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NOTE:Ensurethelateralsupportsarepositionedbetween
the back cushion foam and the elastic strips on either
side of the back cushion cover as shown in FIGURE 2.
Installing/ Rem oving Lateral Support
Cushions
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.
B
A
C
K
INSTALLING.
1. Hold the fastening end of the cushion away from the
fastening strip on the support.
4. Closethetopandbottomflapsofthebackcushioncover
andpressthefasteningstripstogethertosecuretheback
cushion to the Infinity Back as shown in FIGURE 2.
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.
REMOVING.
4. Press the fastening end firmly against the support to
secure.
1. Graspthetopflapandpulluptoreleasethefastening
strips.
REMOVING.
1. Grasp the fastening end of the cushion.
2. Grasp the bottom flap and pull down to release the
fastening strips.
2. Pull upwards to release the hook and loop fasteners
3. Grasp the cushion and pull away from the Infinity
Back to remove.
as shown in FIGURE 2.
SPINAL INSERT
BACK CUSHION
Rounded Groove
Infinity
Back
Lateral
Rounded Edge
in Back Panel
Support
Top Flap
Spinal
Inserts
Elastic
Strip
Bottom
Flap
Fastening
Strips
Fastening
Strips
Fastening Strips
(Attach to Back Panel)
LATERAL SUPPORT
PO C KET
Back Cushion
END
NOTE: Lat-
Pocket
eral support
Support
Top
Flap
not installed
for clarity.
Lateral Pad
FASTENING
Bottom
Flap
Hook and Loop
Fastening Strips
END
FIGURE 2 - INSTALLING/ REMOVING CUSHIONS
8
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PREPARING THE INFINITY BACK FOR INSTALLATION
PROCEDURE 2
4. If necessary, loosen, but do not remove the two (2)
mounting screws securing each upper width bracket
to the back frame.
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ADJ USTING THE MOUNTING
HARDWARE (FIGURE 3)
NOTE: Refer to the INSTALLATION AND STABILITY 5. Slide the upper width brackets IN or OUT until the
WARNINGS in the SAFETY SUMMARY of this manual.
mounting pins fit flush into both upper (swivel) cane
clamps and the depth hardware touches the cane
clamps as shown in FIGURE 3.
1. Hold the Infinity Back up to the back canes at the ap-
proximateinstallationheight.
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6. Install the Infinity Back onto the wheelchair. Refer
to INSTALLING/REMOVING THE INFINITY
BACK in PROCEDURE 3 of this manual.
2. Visually inspect each side of the Infinity Back to see if the
width hardware is set at the appropriate height to match
theclampinstallationand/orthebackcaneconfiguration.
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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.
3. Perform one (1) of the following:
B
A
C
K
CORRECT HEIGHT - Adjust the width of the
width hardware. Refer to ADJUSTING THE
MOUNTING HARDWARE WIDTH in this pro-
cedure of the manual.
Mounting Pin
Back
Cane
INCORRECT HEIGHT - Adjust the height of the
width hardware. Refer to ADJUSTING THE
MOUNTING HARDWARE HEIGHT in this pro-
cedure of the manual.
Depth
Hardware
Depth
Hardware
Mounting
Pin
Adjusting the Mounting Hardware Height
1. Remove the two (2) mounting screws from the width
bracket.
UPPER (SWIVEL)
CANE CLAMP
LOWER (FIXED)
CANE CLAMP
2. Align the opening in the width bracket with either the
UPPER or LOWER set of mounting holes.
SLIDE
Width
Bracket IN
or OUT
3. Loosely install the two (2) mounting screws into the
desired set of mounting holes as shown in FIGURE 3.
UPPER
Width
4. AdjustthewidthoftheInfinityBack. RefertoADJUST-
ING THE MOUNTING HARDWARE WIDTH in this
procedure of the manual.
Bracket
Mounting Screws
Adjusting the Mounting Hardware Width
Mounting Pin
1. Hold the Infinity Back up to the back canes at the ap-
proximateinstallationheight.
Depth
Hardware
UPPER
Mounting
Holes
C AUTIO N
LOWER
Width
The re sho uld b e a g a p no la rg e r tha n
1/ 16-inc h b e twe e n the d e p th ha rd wa re
a nd the c a ne c la m p s, othe rwise d a m a g e
to the Infinity Ba c k m a y oc c ur. (FIGURE 3)
Bracket
NOTE:
Lower
2. Visually inspect each side of the Infinity Back to see if
thedepth hardwaretouches the cane clamps onboth
back canes as shown in FIGURE 3.
Mounting
Screws
mounting
pin not
shown for
clarity.
LOWER
Mounting
Holes
3. Perform one (1) of the following:
CORRECT WIDTH - Proceed to STEP 6.
INCORRECT WIDTH - Proceed to STEP 4.
FIGURE 3 - ADJUSTING THE WIDTH
HARDWARE
9
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PROCEDURE 3
INSTALLING/REMOVING THE INFINITY BACK
7. Ensure all cushions and lateral supports have been in-
stalled. Refer to PROCEDURE 2 - PREPARING THE
INFINITYBACKFORINSTALLATIONinthismanual.
I
This Procedure includes the following:
Installing/Removing the Infinity Back
N
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8. Positiontheuserintothewheelchairtodeterminewhich
adjustments need to be made to properly fit the Infinity
Back. Refer to the wheelchair owner's manual.
INSTALLING/ REMOVING THE
INFINITY BACK (FIGURE 1)
9. Removetheuserfromthewheelchair.Refertothewheel-
chair owner's manual.
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
10. Perform the following procedures to adjust the Infin-
ity Back to fit the wheelchair and the user if neces-
sary. Refer to PROCEDURE 4 - ADJUSTING THE
INFINITY BACK in this manual.
Installing the Infinity Back
1. Ensurethefour(4)caneclampsaresecurelyinstalledon
the wheelchair frame. Refer to INSTALLING/REMOV-
INGCANECLAMPSinPROCEDURE1ofthismanual.
A. ADJUSTING THE HINGE/ANGLE (DUALFLEX
ONLY)
B. ADJUSTING THE DEPTH HARDWARE
C. ADJUSTING THE LATERAL SUPPORTS
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2. Ifnecessary,adjustthemountinghardwaretofittheback
canes. Refer to ADJUSTING THE MOUNTING
HARDWARE in PROCEDURE 2 of this manual.
NOTE: Perform the above procedures in the order listed.
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.
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 wheel-
chair owner's manual.
4. Ensure the upper mounting pins are positioned on
top of the upper (swivel) cane clamps.
13. Visuallyinspecttheuser, thebackandthewheelchairto
ensure all adjustments have been properly made.
5. Twist the clamp locks on the upper (swivel) cane
clamps to the open position shown in FIGURE 1.
14. Ifnecessary,repeatSTEPS9-13untiltheuseriscom-
NOTE: Opening the clamp locks will cause the mounting
pins to slide down into the upper (swivel) cane clamps.
fortable.
Rem oving the Infinity Back
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:Thewheelchairshouldbeunoccupiedforthispro-
cedure.
NOTE: It may be necessary to adjust the cane clamp
height. Refer to ADJUSTING CANE CLAMP
HEIGHT in PROCEDURE 4 of this manual.
1. Twist the upper (swivel) cane clamp locks in the open
position to release the upper mounting pins (FIGURE 1).
2. LifttheInfinityBackupwardstoremovethelowermount-
ing pins from the lower (fixed) cane clamps.
UPPER
(SWIVEL)
C ANE
Back
Upper
(Swivel)
Cane
Cane
C LAMP
Clamp
Lock
Mounting
Pin
Clamp Lock in
OPEN Position
Clamp
Mounting
Pin
Groove
Flange
Back
Cane
Installed DualFlex
Clamp Lock in
Infinity Back
TO P
VIEW
CLOSED
Position
Lower (Fixed)
Cane Clamp
(UNIBACK NOT
SHOWN)
FIGURE 1 - INSTALLING/ REMOVING THE INFINITY BACK
10
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ADJUSTING THE INFINITY BACK
PROCEDURE 4
ADJ USTING THE HINGE/ ANGLE
(DUALFLEX ONLY)
This Procedure includes the following:
Adjusting Cane Clamp Height
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NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
Adjusting the Hinge/Angle (DualFlex ONLY)
Adjusting the Depth Hardware
NOTE: The following procedures apply to the DualFlex
ONLY.Ifinstalling/adjustingaUniBackproceedtoADJUST-
INGTHELATERALPADSinthisprocedureofthemanual.
Adjusting the Lateral Supports
WARNING
NOTE: Both hinges should be adjusted to have fixed
angles OR both hinges should be adjusted to have Dy-
namic Flex angles.
For p rop e r insta lla tion of the Infinity Ba c k
a nd to re d uc e the risk of p re ssure sore s,
the a d justm e nt p roc e d ure s b e low MUST b e
p e rform e d in the following ord e r:
N
G
Adjusting the Angle (FIGURE 2)
1.
2.
Ad justing the Mo unting Ha rd wa re
Ad justing the Hing e / Ang le
(DUALFLEX ONLY)
Ad justing the De p th Ha rd wa re
Ad justing the La te ra l Pa d s
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.
4.
3. Push or pull to adjust the angle of the back to the
desired angle.
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.
4. Torque the adjustment screws on both hinges to 45-
50 in./lbs.
5. Install the Infinity Back onto the wheelchair. Refer
to INSTALLING/REMOVING THE INFINITY
BACK in PROCEDURE 3 of the 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 nec-
essary, repeat the procedure until the user is comfortable.
6. Adjust the lateral supports. Refer to ADJUSTING THE
LATERALSUPPORTSinthisprocedureofthemanual.
Hinge
UPPER
Back Panel
ADJ USTING CANE CLAMP HEIGHT
(FIGURE 1)
Adjustment
Screw
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
LOWER
Back Panel
FIGURE 2 - ADJUSTING THE HINGE
(DUALFLEX ONLY) - ADJUSTING THE ANGLE
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.
Converting Dynam ic Flex Hinges to Fixed
Angle Hinges (FIGURE 3)
3. Torque the mounting screw to 45-50 in./lbs.
4. Repeat STEPS 1-3 for the remaining clamps, if
1. Remove the four (4) long mounting screws securing
the hinge to the back panels.
necessary.
2. Remove the elastomers, spacers and washers.
Upper (Swivel)
Cane Clamp
NOTE:Savethelongmountingscrews, elastomers, spac-
ers and washers for future conversion to Dynamic Flex.
Adjust Cane
Mounting Screw
Clamps UP
3. Position the hinge on the back, aligning the hinge
mounting holes with the back panel mounting holes
as shown in FIGURE 3.
Back Cane
or DOWN
Lower (Fixed)
Cane Clamp
4. Install the four (4) short mounting screws. Torque to 45-
50 in./lbs.
Mounting Screw
5. Repeat STEPS 1-4 for opposite hinge.
FIGURE 1 - ADJUSTING CANE CLAMP
HEIG HT
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
LATERALSUPPORTSinthisprocedureofthemanual.
11
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PROCEDURE 4
ADJUSTING THE INFINITY BACK
Converting Fixed Angle Hinges to Dynamic
Flex Hinges (FIGURE 3)
Depth
Bracket
Width
1. Remove the four (4) short mounting screws securing the
hingetothebackpanels.
A
D
J
U
S
T
I
Bracket
Mounting Hole
NOTE: Save the short mounting screws for future conversion
tofixedanglehinges.
Adjustment
Hole
2. Position the elastomers, spacers and washers as shown
in FIGURE 3.
Mounting Screw
NOTE: Ensure all mountingholesare aligned.
N
G
3. Alignthehingewiththemountingholesoneachbackpanel.
4. Install the four (4) long mounting screws. Torque to 45-50
in./lbs.
FIGURE 4 - ADJUSTING THE DEPTH
HARDWARE
5. Adjust the lateral supports. Refer to ADJUSTING THE
LATERAL SUPPORTS in this procedure of the manual.
ADJ USTING THE LATERAL
SUPPORTS (FIGURE 5)
Spacer
Back
Panel
Mounting
Holes
Elastomer
Hinge
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
NOTE: Lateral supports include the lateral thoracic sup-
ports and the pelvic stabilizers.
Washer
Hinge Mounting
Hole
FIGURE 3 - ADJUSTING THE HINGE
Adjusting the Width
Mounting Screws
1. Visually inspect the orientation of one (1) curved
washer on one (1) lateral support.
(DUALFLEX ONLY) - CONVERTING HINGES
2. Perform one (1) of the following:
ADJ USTING THE DEPTH
HARDWARE (FIGURE 4)
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.
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
b. Proceed to STEP 3.
1. Ensure all cushionshave been installed on the Infinity
Back.RefertoINSTALLING/REMOVINGCUSHIONS
in PROCEDURE 2 of this manual.
B. Curved washer oriented as shown in DETAIL
"B" of FIGURE 5 - Perform the following steps:
2. Hold the Infinity Back up to the wheelchair.
a. Hold the mounting screw with the threads
UP.
3. Visually inspect the Infinity Back and the wheelchair
to determine the desired depth.
b. Position the tooth lock washer on the
mounting screw.
4. Loosen the mounting screw in the depth bracket.
c. Position the curved washer on the mount-
ing screw so that the bent portion is TO-
WARD the head of the mounting screw
as shown in DETAIL "A" of FIGURE 5.
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.
d. Loosely install the mounting screw with
washers through the adjustment slot and
into the lateral support.
6. Torquemountingscrewto45-50in./lbs.tosecuredepth
bracket to width bracket.
3. Repeat STEPS 1-2 for the other mounting screw
7. Perform one (1) of the following:
on the same lateral support.
DUALFLEX-Adjustthehingeand/orangleoftheback,
ifpresent.RefertoADJUSTINGTHEHINGE/ANGLE
in this procedure of the manual.
4. Repeat STEPS 1-3 for the remaining lateral sup-
ports which need adjustment.
5. Position the user in the wheelchair.
UNIBACK-ProceedtoADJUSTINGTHELATERAL
SUPPORTS in this procedure of the manual.
12
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ADJUSTING THE INFINITY BACK
PROCEDURE 4
6. Slide one (1) lateral support to the desired location.
DETAIL "A"
Curved
Washer
7. Visually inspect the adjustment slot to find proper lo-
cation for the curved washer.
A
D
J
U
S
T
I
8. Remove one (1) mounting screw, tooth lock washer
and curved washer.
Tooth Lock Washer
9. Hold the mounting screw with the threads UP.
Mounting
Screws
10. Positionthetoothlockwasheronthemountingscrew.
Toothed Adjustment Slot
11. Position the curved washer on the mounting screw
so that the bent portion is toward the threaded end of
the mounting screw.
DETAIL "B"
N
G
12. Install the mounting screw with washers through the
toothed adjustment slot and into the lateral support.
Lateral Thoracic Support
Back
Panel
13. Torque the mounting screw to 45-50 in./lbs., ensur-
ing the curved washer is seated properly in the
toothed adjustment slot shown in FIGURE 5.
Grooves
14. Repeat STEPS 8-13 for the remaining mounting
Mounting
Screw
screw on the lateral support.
15. RepeatSTEPS6-14fortheremaininglateralsupports.
Adjusting the Height
Grooves
NOTE: Both sets of lateral supports can be adjusted to
three (3) different height positions.
Hip Guide
1. Removethetwo(2)mountingscrews, tooth lock wash-
ers and curved washers securing the lateral support to
theInfinityBack.
Washer
Toothed Adjustment
Slot
2. Hold one (1) mounting screw with the threads UP.
3. Position the tooth lock washer on the mounting screw.
Back Panel
Curved Washer
UPPER
4. Position the curved washer on the mounting screw so
thatthebentportionisTOWARDtheheadofthemount-
ing screw as shown in DETAIL "A" of FIGURE 5.
Lateral Thoracic
Support
Back
Panel
5. RepeatSTEPS2-4fortheremainingmountingscrew
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-
TAIL "B" of FIGURE 5.
Mounting
Screws
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
adjustmentslottoseewhichmountingholehasbeenused
and use the corresponding mounting hole on the oppo-
site lateral support if desired.
LOWER
Hip
Guides
Back Panel
Washers
7. Looselyinstallthetwo(2)mountingscrewsandwashers
to secure the supports to the back as shown in DETAIL
"B" of FIGURE 5.
LOOSEN
Mounting
Screws and
SLIDE Lateral
Pads
NOTE: The curved washer should be facing away from
the Infinity Back for ease of adjustment.
Toothed Adjustment Slot
8. Adjustthewidthofthelateralsupports.RefertoADJUST-
ING THE WIDTH in this procedure of the manual.
FIGURE 5 - ADJUSTING THE LATERAL
SUPPO RTS
13
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PROCEDURE 5
MAINTENANCE
Installing/ Rem oving Lateral Support
This Procedure includes the following:
Installing/Removing Cushion Foam
Inspection
Cushion Foam (FIGURE 2)
M
A
I
INSTALLING.
1. Remove the lateral support cushion from the lateral
support. RefertoINSTALLING/REMOVINGCUSH-
IONS in PROCEDURE 2 of this manual.
Cleaning
N
T
E
N
A
N
C
E
INSTALLING/ REMOVING
CUSHION FOAM
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.
NOTE: Refer to the INSTALLATION AND STABILITY
WARNINGS in the SAFETY SUMMARY of this manual.
4. Slidethelargerendofthecushionfoamintotheopen-
ing in the cushion cover.
Installing/ Rem oving Back Cushion Foam
(FIGURE 1)
5. Pull down and hold the lower flap.
6. Insert the tapered end of the cushion foam into the
cushion cover.
INSTALLING.
1. Remove the back cushion from the back panel(s).
Refer to INSTALLING/REMOVING CUSHIONS in
PROCEDURE 2 of this manual.
REMOVING.
1. Remove the lateral support cushion from the lateral
support. RefertoINSTALLING/REMOVINGCUSH-
IONS 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.
2. Position the cushion cover as shown in FIGURE 2.
4. Slide the top of the cushion foam inside the cushion
cover.
3. Pull up and hold the upper flap on the pocket side of
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.
4. Pull down the lower flap.
5. Graspthecushionfoamandremoveitfromthecush-
6. Install the cushion onto the Infinity Back. Refer to IN-
STALLING/REMOVING CUSHIONS in PROCE-
DURE 2 of this manual.
ioncover.
Opening
(Insert
Pocket (Insert
Cushion
Lateral Support)
Foam)
REMOVING.
1. Remove the back cushion from the back panel(s).
Refer to INSTALLING/REMOVING CUSHIONS in
PROCEDURE 2 of this manual.
Upper
Flap
2. Pull the top flap UP and the bottom flap DOWN.
Lower Flap
3. Grasp the cushion foam and remove it from the back
cover.
Fastening Strip
(Attach to Lateral
Support)
Top of
Top Flap
Back
Cover
Tapered
End of
Cushion
Foam
Top of Cushion
Foam
Elastic
Strip
Back
Cushion
Foam
Bottom
Flap
Cushion
Cover
FIGURE 2 - REMOVING/ INSTALLING
LATERAL SUPPORT CUSHION FOAM
FIGURE 1 - REMOVING/ INSTALLING
BACK CUSHION FOAM
14
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MAINTENANCE
PROCEDURE 5
Installing/ Rem oving Adjustable Positioning
Pad (UNIBACK ONLY) (FIGURE 3)
INSPECTION
WARNING
M
A
I
INSTALLING.
DO NOT c o ntinue to use this p ro d uc t if
a ny o f the fo llo wing p ro b le m s a s d e -
sc rib e d a re d isc o ve re d . Co rre c tive m a in-
te na nc e c a n b e p e rfo rm e d a t o r a r-
ra ng e d thro ug h yo ur e q uip m e nt sup p lie r.
1. Liftthetopflapupandpullthebottomflapdownonthe
back cushion cover.
N
T
E
N
A
N
C
E
2. Grasp the cushion and pull upwards to remove the
cushion from the back.
3. Alignthefasteningstripsontheadjustablepositioning
padwiththefasteningstripsonthebackcushionfoam
as shown in FIGURE 3.
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.
4. Press the adjustable positioning pad firmly against
the back cushion foam to secure.
2. CheckALLfastenersweeklytoensurethatmechani-
cal connections are secure.
5. InstallthebackcushionontotheInfinityBack. Referto
INSTALLING/REMOVING CUSHIONS in PROCE-
DURE 2 of this manual.
WARNING
Skin c ondition should be c he c ke d ve ry fre -
que ntly a fte r the insta lla tion a nd use of a ny
ne w se a ting syste m .
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.
CLEANING
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.
Cover
1. Machine wash the covers once a week.
REMOVING.
C AUTIO N
1. Liftthetopflapupandpullthebottomflapdownonthe
MACHINE WASH b a c k c o ve r a nd la te ra l
sup p o rt c o ve rs in c o ld wa te r o n g e ntle
c yc le using a m ild d e te rg e nt. DO NOT use
fa b ric so fte ne rs o r b le a c h. DO NOT m a -
c hine dry. Air dry ONLY. DO NOT dry in sun.
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 re-
lease the fastening strips.
Foam
4. InstallthebackcushionontotheInfinityBack. Referto
INSTALLING/REMOVING CUSHIONS in PROCE- Ifthebackcushionfoambecomescontaminatedbecause
DURE 2 of this manual.
of moisture, the back cushion should be replaced imme-
diately.
Back
Cushion
Top Flap
Adjustable
Positioning
Pad
Fastening
Strips
Back
Cushion
Foam
Bottom Flap
FIGURE 3 - INSTALLING/ REMVOING
ADJUSTABLE POSITIONING PAD
(UNIBACK ONLY)
15
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LIMITED WARRANTY
PLEASE NOTE: THE WARRANTY BELOW HAS BEEN DRAFTED TO COMPLY WITH FEDERAL LAW
APPLICABLE TO PRODUCTS MANUFACTURED AFTER JULY 4, 1975.
This wa rra nty is e xte nd e d only to the orig ina l p urc ha se r/ use r of our p rod uc ts.
This wa rra nty g ive s yo u sp e c ific le g a l rig hts a nd yo u m a y a lso ha ve o the r le g a l rig hts
whic h va ry fro m sta te to sta te .
Inva c a re wa rra nts its p rod uc ts to b e fre e from d e fe c ts in m a te ria ls a nd workm a nship fo r
use b y the orig ina l p urc ha se r for a p e riod of two (2) ye a rs from the d a te of p urc ha se on
the b a c k a nd nine ty (90) d a ys fro m the d a te o f p urc ha se o n the c o ve r. If within suc h
wa rra nty p e rio d a ny suc h p ro d uc t sha ll b e p ro ve n to b e d e fe c tive , suc h p ro d uc t sha ll
b e re p a ire d or re p la c e d , a t Inva c a re 's op tion. This wa rra nty d oe s not inc lud e a ny la b or
or ship p ing c ha rg e s inc urre d in re p la c e m e nt p a rt insta lla tion or re p a ir of a ny suc h p rod -
uc t. Inva c a re 's so le o b lig a tio n a nd yo ur e xc lusive re m e d y und e r this wa rra nty sha ll b e
lim ite d to suc h re p a ir a nd / or re p la c e m e nt.
Fo r wa rra nty se rvic e , p le a se c o nta c t the d e a le r fro m who m yo u p urc ha se d yo ur Inva c -
a re p rod uc t. In the e ve nt you d o not re c e ive sa tisfa c tory wa rra nty se rvic e , p le a se write
d ire c tly to Inva c a re a t the a d d re ss a t the b o tto m o f this p a g e . Pro vid e d e a le r’s na m e ,
a d d re ss, d a te of p urc ha se , ind ic a te na ture of the d e fe c t a nd , if the p rod uc t is se ria lize d ,
ind ic a te the se ria l num b e r. Do no t re turn p ro d uc ts to o ur fa c to ry witho ut o ur p rio r c o n-
se nt.
LIMITATIONS AND EXCLUSIONS: THE FOREGOING WARRANTY SHALL NOT APPLY TO SERIAL
NUMBERED PRODUCTS IF THE SERIAL NUMBER HAS BEEN REMOVED OR DEFACED, PROD-
UCTS 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 INSTRUC-
TIONS.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS WARRAN-
TIES. IMPLIED WARRANTIES, IF ANY, INCLUDING THE IMPLIED WARRANTIES OF MERCHANT-
ABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL NOT EXTEND BEYOND THE DURA-
TION OF THE EXPRESSED WARRANTY PROVIDED HEREIN AND THE REMEDY FOR VIOLATIONS
OF ANY IMPLIED WARRANTY SHALL BE LIMITED TO REPAIR OR REPLACEMENT OF THE DEFEC-
TIVE 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 RE-
Q UIREMENTS.
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
INVACARE 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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