SPEX Zygo Back Support Instruction Manual

Zygo Back Support
Drop Mount Hardware
Installation & User Manual
®
User Name
Serial Number
User Manual for all Spex Back Supports (product code begins with‘125’)
Revision: DropMount20211102_EN
IMPORTANT CONSUMER INFORMATION NOTICE:
This manual contains important instructions that must be passed on to
the user of this product. Please do not remove this user manual before
delivery to the end user.
SUPPLIER: This manual must be given to the user of this product.
USER/CAREGIVER: Before using this product, read entire manual and
save for future reference. Transit Safety section MUST be read before
product is used in a vehicle.
MD: This product is a Medical Device.

05
SPEX BACK SUPPORT USER MANUAL 2WWW.SPEXSEATING.COM
Introduction
Spex recommends that a health care professional who is skilled in wheelchair seating should decide if the
Spex products are appropriate for the user. They could be an Occupational Therapist, Physiotherapist, or
other health professional with training in wheelchair seating and positioning.
Installation and adjustment of your Spex product should be carried out by
- An authorized Spex distributor or technician, or
- A qualied health professional with appropriate training
Contents
Introduction
Intended Use
Compatibility
General Safety
Back Support Contents
Warnings
Installing Drop Mount Hardware
Transport Safety
Maintenance
Cleaning Checklist
Reissuing to another user
Disposal and Recycling
Product Materials
6 Month Checklist
Product Log Form
Warranty
2
3
4
4
5
6
7
9
13
13
14
15
15
16
17
18
Weight Capacity
Drop Mount Hardware maximum user weight: 300 lbs. (136 kg)
Never exceed the weight limit of your Back Support or your wheelchair. The weight limit of the wheelchair
is specied by the wheelchair manufacturer. Never perform exercise weight training that could exceed the
weight limit of the wheelchair.

05
SPEX BACK SUPPORT USER MANUAL 3WWW.SPEXSEATING.COM
Intended Use
Spex Seating is intended for users (disabled and/or discomforted) that require specic postural and
positioning support to provide comfort for body function in a sitting posture on wheelchairs for daily
activities and for transportation in vehicles. It is designed with ergonomic adjustments to provide
improved personal body-posture conditions and/or to help prevent/reduce physical problems associated
with sedentary work or activities.
Contraindications
1. Use of Spex Wheelchair seating products may aect the center of gravity causing the Wheelchair
to tip, potentially causing injury. Always judge the need for anti-tippers or amputee axle adapter
brackets to be added to the Wheelchair to increase stability.
2. Check regularly for for skin redness and that pressure spots are not developing. If your skin develops
redness, stop using the product and consult your doctor or therapist.
3. Zygo Lo is not to be used as a seat to transport a user.
Spex Products
• Seat Base
• Spex Cushions
• Back Supports
• Lateral Trunk Supports
• Arm & Thigh Supports
• Medial Thigh Supports
• Head Supports
• Anterior Supports
Find out more here: https://www.spexseating.com/download-spex-catalogue

05
SPEX BACK SUPPORT USER MANUAL 4WWW.SPEXSEATING.COM
Compatibility
Spex Seating is designed to be compatible with most wheelchairs. Never use your Spex product in ways it
is not designed for.
All Spex products are tested and certied as part of a complete Spex Seating system and may not be suitable
for use with other brands of wheelchair seating.
Back Support
• Spex oers dierent hardware options that can be used with most wheelchairs that have back support
canes. There are options to t tube diameters between 19mm (¾”) and 32mm (1 ¼”).
• Some Back Supports can be mounted to wheelchairs without back support canes, including power-
recline designs. Contact your Spex Seating supplier to check compatibility.
General Safety
To avoid injury, read and understand all warnings in this manual. Follow all instructions when installing
and using your Spex product.
There are many hazards when using wheelchairs and adaptive equipment. If you misuse your wheelchair
or seating products, you can be seriously injured. If your Spex product does not function as intended,
please stop using it and contact your Spex Seating supplier immediately.
Any serious incident that has occurred in relation to this product should be reported to Spex Ltd. Please
contact Spex Ltd, your Spex Seating supplier, and your local regulatory authority for more information.
Pressure: Inspect your skin at least once a day for any areas of redness or bruising. These could be signs of
soft tissue breakdown. If your skin is red or bruised, please stop using the product and consult with your
health care professional.
Skin: In rare cases people may experience skin irritation from the fabrics used in this product. If your skin
is red or itchy, consult with your health care professional.
Moisture: Always keep your Spex product dry. If your Spex product gets damp or wet, wipe with a dry cloth
as soon as possible. Never use your Spex product in a showering or pool facility. Moisture can damage your
Spex product and could potentially cause failure.
Temperature: Keep your Spex product away from sources of extreme heat or extreme cold to avoid burns
from the metal components. Extreme temperatures can aect the function of your Spex product.
Dirt: Small bits of dust, dirt and sand can damage your Spex product. Regularly remove any build-up
around openings and moving parts.

05
SPEX BACK SUPPORT USER MANUAL 5WWW.SPEXSEATING.COM
Your Back Support contains the following, in addition to the Back
Support foam, inner cover, outer cover and foam positioning kit.
Description Quantity
A Fixing Studs 2
B Back Support Shell 1
C Mounting Bracket 2
D Drop Mount Receiver 2
Back Support Contents
A
D
C
B

05
SPEX BACK SUPPORT USER MANUAL 6WWW.SPEXSEATING.COM
Warnings
Risk of accident, injury, pain, or death if warnings are not followed.
Ask for help if you are unsure about any of the following points.
1. Do not install any Spex products without rst reading and understanding this
manual. If you are unable to understand the Warnings, Cautions, and/or Instruc-
tions, contact a qualied clinician or supplier - otherwise injury or damage may
occur.
2. Check all hardware is installed correctly and tightened before using the wheel-
chair.
3. Do not use your Spex product if any hardware is missing or broken. You will need
a qualied technician for help with any repairs, replacements, or adjustments.
4. Check that any mechanisms are functioning correctly before the wheelchair is
used. Accidental release may cause parts to detach and cause injury.
5. Only use genuine Spex accessories, components, and hardware.
6. Installing Spex products may change the centre of gravity of your wheelchair.
Check that the wheelchair is not at risk of tipping over from steep slopes or user
motion. Consider adding anti-tippers to the wheelchair to increase stability.
7. Never use any Spex product to lift or push the wheelchair.
8. Check that the Spex product gives the user appropriate support. A poor t can
cause posture problems and risk the safety of the user.
9. Never use Spex products without their covers. Using the product without its cover
increases the risk of skin irritation or breakdown.
10.Use only Spex covers on Spex products.
11. Avoid sharp objects, open ames, and extreme temperatures.
12. Be careful when transferring the user in and out of the seating system. The user
could fall from the wheelchair or injure themselves when supports are removed.
13. Watch out for pinch points. Keep all body parts clear of moving parts when mak-
ing changes and adjustments
14.Never exceed the weight limit of your Spex product or your wheelchair. The
weight limit of the wheelchair is specied by the wheelchair manufacturer. Never
perform exercise weight training that could exceed the weight limit of the wheel-
chair.

05
SPEX BACK SUPPORT USER MANUAL 7WWW.SPEXSEATING.COM
Installing Drop Mount Hardware
Apply enough tension to the clamp fasteners to prevent the
receivers from slipping during installation.
5mm Hex Key, 10mm Spanner/Wrench
1.
2.
3.
4.
5.
Adjust the mounting bracket fasteners to allow the
brackets and pegs to slide freely.
Attach the Drop Mount Receivers to the wheelchair canes.
Check that both receivers are level and parallel.
Drop the Back Support into the receivers. Check that
both pegs are fully engaged.
Position the Back Support depth and angle as desired.
Tighten the two M6 Nyloc Nuts on each peg.

05
SPEX BACK SUPPORT USER MANUAL 8WWW.SPEXSEATING.COM
Check that the Back Support is centred
between the canes and the Mounting
Brackets are at against the Back Support
Shell.
6.
7.
8.
9.
10.
Test the Back Support removal and installation.
The pegs should lock securely into both receiv-
ers. Adjust the receiver, peg, or bracket posi-
tions if needed.
Flick the red levers towards the outside of the
canes to release the locking mechanism.
Position the Back Support height as desired.
Tighten the two M6 Nyloc Nuts on each
bracket.
Evenly torque both clamp fasteners to 5Nm.
Check both fasteners are tight.

05
SPEX BACK SUPPORT USER MANUAL 9WWW.SPEXSEATING.COM
The Spex seating system has been successfully crash tested and complies with RESNA WC-4:2012, Section
20 and ISO 16840-4:2009, it is suitable for use as a motor vehicle seat when used with an appropriate
wheelchair base.
Please follow all installation, use and maintenance instructions as well as the following transit instructions.
If feasible, the wheelchair user should transfer to the vehicle seat and use the vehicle-installed occupant
restraint systems.
Spexseatingsystemhas been designed toaccommodatethe properuseofvehicle-anchored belt restraints.
Spex achieved a rating of Excellent (16 out of 16), for ease of properly positioning a belt restraint, and the
degree to which proper belt restraint can be achieved, based on the methods of Annex C. The following
items of the Spex seating system have been tested and are suitable for use in a motor vehicle:
• Back Support range (when sized to support pelvis and shoulders)
• Seat Base
• Cushion Range
• Arm and Thigh Supports
• Trunk Lateral Supports
• Head Supports
Note: All back supports must be used with a head support for transport in a vehicle. Zygo Lo is not certied
for transport in a vehicle.
Transport Checklist
• After carrying out any adjustments ensure all bolts, screws and nuts are securely fastened again to
ensure safety when travelling in a vehicle.
• Ensure the top and bottom mounts of the backrest are installed as far apart from each other as possible
to give a stronger 4-point attachment to the wheelchair frame. Ensure the quick release latches are
engaged.
• Ensure the front and rear mounts of the seat base are mounted (in the designated locations) as far
forward as possible to provide maximum support. Ensure the quick release pins are engaged.
• Do not use the Spex seating system as a means of vehicle seat if seating components which have not
been successfully crash tested are used anywhere on the seating system. Spex seating is designed and
certied using only Spex components.
• Spex is not liable in the event where other manufactured seating systems are used in conjunction with
Spex seating.
• Ensure any swing-away or quick-release components are in their locked position before using the seat
as a vehicle seat in a motor vehicle.
• Ensure the user is below the weight limit of both the wheelchair and the seating system. Contact your
Spex Seating supplier to review options if the user weight has increased and exceeds the specied
limit.
Transport Safety

05
SPEX BACK SUPPORT USER MANUAL 10 WWW.SPEXSEATING.COM
Belt Restraints
When using the Spex seating system as a vehicle seat, both a pelvic belt restraint and shoulder belt restraint
must always be used. To correctly position the belt restraints on the wheelchair occupant, the following
must be ensured:
• The pelvic-belt restraint should be worn low across the front of the pelvis near the junctions of the
pelvis and thighs
• The angle of the pelvic-belt restraint should be between 30° to 75° relative to the horizontal and, ideally,
between within 45° to 75° to the horizontal (as shown in Figure 2)
• The belt-restraint buckle of three-point belt restraints should be placed in contact with the occupant’s
body and away from wheelchair components
• The junction of the shoulder belt and pelvic belt of three-point-belt restraints should be located near
the hip opposite the shoulder over which the diagonal belt crosses and not near the midline of the
occupant
• Shoulder belt restraints should t over the shoulders with the shoulder belt restraint midway between
the shoulder and neck.
• Belt restraints should not be routed outside of the wheelchair wheels or over the wheelchair armrests,
and should not be held away from the body by wheelchair components or parts
• Upper-torso belt restraints should t directly over, and in contact with, the middle of the shoulder
• Belt restraints should be adjusted to t as snugly as possible, consistent with user comfort
• Belt restraints should not be worn twisted in a manner that reduces the area of contact of the belt
webbing with the occupant
Warning
Pelvic belt restraints should make good
contact with the front and sides of the
body near the junctions of the thighs and
pelvis and against the hips
Belt restraints must not be held away from
the body by wheelchair components such as
armrests or wheels

05
SPEX BACK SUPPORT USER MANUAL 11 WWW.SPEXSEATING.COM
Transit Warnings
1. The distance between the top of the user’s shoulder and the top of the back should not
exceed 165mm (6.5”).
2. The Spex seating system must only be used for transport with wheelchair bases that are
tested as part of a wheelchair system that conforms to performance requirements of ISO
7176-19 and RESNA WC-4:2012, Section 19.
3. The Spex seating system should only be used for transport on wheelchair frames that
provide four securement points strap-type tiedowns and pelvic-belt anchor points that
conform to the requirements of RESNA WC-4: 2012, Section 19.
4. The wheelchair must be labelled as appropriate for use as a seat in a motor vehicle,
dynamically tested to the performance requirements of ISO 7176-19 and installed, used
and maintained according to the manufacturer’s instructions.
5. The Spex seating system must only be used as indicated in this user manual.
6. Both pelvic and shoulder belt restraints as a part of a complete Wheelchair Tie down
and Occupant Restraint System (WTORS) which meets ISO 10542-1 shall be used to
achieve eective occupant restraint and optimum protection in a vehicle impact; the
belt restraints should be compatible with the specic wheelchair, and tted to the user
in accordance with WTORS manufacturer’s instructions.
7. Back supports with adjustable recline angles should not be tilted back more than 30° to
the vertical during travel in vehicles unless necessary for the medical and postural needs
of the occupant.
8. If the back support must be adjusted to an angle that is greater than 30° to the vertical
during travel, the upper shoulder-belt anchor point should be adjusted rearward to
maintain belt contact with the wheelchair occupant’s shoulder and chest.
9. The Spex seating system must only be used for forward-facing seating in motor vehicles.
10.In order to reduce the potential of injury to vehicle occupants, wheelchair-mounted
rigid trays not specically intended for use during travel in motor vehicles must be:
Removed and secured separately in the vehicle or secured to the wheelchair so they will
not break free in a crash and
• Be positioned with a gap of at least 75mm (3”) between the back edge of the tray and
the wheelchair occupant’s abdomen and/or chest so as not to interfere with the proper
belt restraint use, and
• Have energy absorbing padding placed between the back edge of the tray and the
wheelchair occupant.
11. Alterations or substitutions must not be made to the seating system structure, parts or
components, without rst consulting Spex.
12. The use of a postural pelvic belt and upper torso belt attached to the wheelchair base or
seat frame are strongly recommended.

05
SPEX BACK SUPPORT USER MANUAL 12 WWW.SPEXSEATING.COM
FAILURE TO HEED THESE WARNINGS COULD CAUSE SEVERE INJURY TO THE
WHEELCHAIR USER OR OTHERS.
NOTES: The rear clear zone is measured from
the rearmost point on an occupant’s head.
The front clear zone is measured from the
frontmost point on an occupant’s head.
Seated head height (HHT) ranges from about
1200 mm for a small adult female to about
1550 mm for a tall adult male.
FCZ = 650mm (25.6”) with upper-torso re-
straint
= 950mm (37.4”) with only pelvic restraint
NOTE: It is strongly recommended that
both pelvic and upper-torso belts be used.
Postural support devices that are not labelled as conforming to ISO 16840-4 may be used
when in a vehicle, but should not be relied on for occupant restraint.
Both pelvic-belt and shoulder-belt restraints as a part of a complete WTORS which meets
ISO 10542-1 or ANSI/RESNA WC18 shall be used to achieve aective occupant restraint
and optimum protection in a vehicle impact; the belt and restraints should be tted to
the user in accordance with the WTORS manufacture’s instructions
Backrest mounting hardware must be installed correctly. Refer to the appropriate section
for correct backrest hardware mounting instructions.
If the wheelchair is being transported whilst unoccupied, the wheelchair must still be
secured to the WTORS.
Children whose mass is less than 22kg (48.5 lbs) should be transferred from their seating
system into appropriate child restraint systems intended for use in motor vehicles.
Always use appropriate restraints in a vehicle.
Sucient forward and rearward clear space should be provided around the wheelchair
occupant. Forward clear-space zone (FCZ) needs to be larger when a shoulder-belt
restraint is not used
13.
19.
18.
17.
16.
15.
14.
TOP VIEW
SIDE VIEW

05
SPEX BACK SUPPORT USER MANUAL 13 WWW.SPEXSEATING.COM
The expected lifetime of Spex products is 5 years. Your Spex product should be checked and cleaned
regularly to help extend its life. Spex recommends that the product is checked every 6 months. If any issues
are found, please stop using the product and contact your Spex Seating supplier immediately.
Maintenance
Maintenance Checklist
• Check that the hardware is working correctly.
• Look for loose bolts or broken components.
• Examine any hardware for signs of stress or cracking.
• Tighten any loose fasteners.
• Check the consistency of any foam.
• Look for signs of wear in any stitching, webbing & pads.
• Contact your Spex Seating supplier for any product repair and replacement options.
Cleaning Checklist
Spex takes no responsibility for the results of the cleaning process. If you have any questions about
cleaning procedures, please contact your Spex Seating dealer.
Hardware
• Wipe clean with mild detergent and water.
• Use disinfectant wipes. Medifab recommends using AHP (Accelerated Hydrogen Peroxide) wipes.
• Dry thoroughly after wiping.
Outer Covers
• Remove the cover and turn inside out. Close any zips or Velcro.
• Machine wash in warm water (40° C / 104⁰ F).
• Drip or tumble dry on low heat.
• Do not iron. Do not dry clean. Do not bleach.
• If chemical cleaners are used, rinse cover with water to remove all chemical residue and dry
completely before use.
• Check the cover for tears and excessive wear and replace if ripped, torn or broken.
• Carefully reinstall any covers after washing. Check the panels and seams of the cover match up to
the foam.
• If used in a group care environment, write the user’s name on the label. Do not mix covers between
users.

05
SPEX BACK SUPPORT USER MANUAL 14 WWW.SPEXSEATING.COM
Incontinence Covers
• Hand wash only with mild detergent and water.
• Do not use bleach or other strong cleaners.
• Do not tumble dry.
• Using this cover will help extend the life of your cushion.
Foam
• Keep dry. Do not reinstall a cover on to damp foam.
Harnesses
• Place inside a laundry bag to prevent damage to your harness or washing machine/dryer.
• Machine wash in warm water (40°C / 104°F).
• Drip or tumble dry on low heat.
• Do not iron. Do not bleach.
Re-issuing to another user
There are strict guidelines for refurbishing Spex products before giving them to another user.
Spex takes no responsibility for contamination, cross-infection, or damage.
Spex recommends using AHP (Accelerated Hydrogen Peroxide) disinfectant wipes. Follow the
manufacturer instructions when using the disinfection product. Spex takes no responsibility for
the results of the disinfecting process.
Part Procedure
Safety check
Check all components for signs of stress or cracking. If
any stress or cracks are found, the Spex product must be
condemned and disposed of.
Seat Base, Back
Support shell
Clean the product with a mild detergent and quality
disinfectant to make sure all areas are free from dirt.
Hardware and
components
Ensure the mechanism components are secure and in safe
working order. If any parts are missing, new ones must be
ordered. Clean the hardware with mild detergent and a
quality disinfectant to make sure all areas are free from dirt.
Upholstery covers Replace all covers regardless of condition.
Cushion positioning
base and wedges
Check each contouring pocket has the correct layers of
foam pads. Check all Velcro is in good condition and holds
strong. Ensure Flex cushion contains entire kit of wedges
and pelvic pads.
Cushion and Back
Support Foam
Check for degradation and cleanliness. Replace if not in
good condition.
Head, Lateral, Medial
Support Pads Replace the foam pad and covers regardless of condition.

05
SPEX BACK SUPPORT USER MANUAL 15 WWW.SPEXSEATING.COM
Many of the materials in your Spex Seating system can be recycled by taking it to a
recycling centre.Thank you for looking after the environment! Follow all local laws and
regulations when disposing of your Spex product.
Product materials
Seat Base
Aluminium, Stainless Steel, Nylon
Spex Cushion: Vigour Cushion: Flex Cushion: Dualtec cushion
Polyurethane foam, Lycra, Nylon, Polyester, Polyurethane
Back Supports
Hardware: Aluminium, Steel, Plastics
Upholstery: Polyurethane foam, Lycra, Nylon, Polyester,
Laterals Trunk Supports
Hardware: Aluminium, Rubber
Upholstery: Polyurethane foam, EVA Foam, Lycra, Nylon, Polyester,
Arm & Thigh Supports
Hardware: Aluminium, Stainless Steel, Ply wood
Upholstery: Polyurethane foam, EVA Foam, Lycra, Nylon, Polyester,
Medial Thigh Supports
Hardware: Aluminium, Stainless Steel
Upholstery: EVA Foam, Lycra, Nylon,
Head Supports
Hardware: Aluminium. Stainless Steel
Upholstery: Polyurethane Foam, Lycra, Nylon, Polyester
Anterior Supports
Upholstery: Polyurethane foam, Nylon, Polyester,
Disposal and Recycling

05
SPEX BACK SUPPORT USER MANUAL 16 WWW.SPEXSEATING.COM
6 Month Checklist
Checklist Date:
or 
Date:
or 
Date:
or 
Date:
or 
Date:
or 
Date:
or 
No concerns with the overall safety of the
user? If , contact your therapist or Spex
distributor immediately.
No accidents occurred or harm caused?
No abnormal stress caused to the seating?
User is wearing an appropriate lap belt and
harness?
No bags or appendages present on the
seating which may cause stability issues?
User is under the maximum weight capacity?
Are the mounting clamps secured properly
to the wheelchair canes?
Are the quick release latches properly
engaging?
Are the nuts on the L-brackets and pins
secured?
Can the Back Support be removed &
installed properly?
Are all hardware and fasteners tight?
Are all components clean?
Are the covers clean and washed?
Is the cushion maintaining correct support
and control for the user’s pelvis?
Is the cushion adjusted correctly and not
modied adversely?
Is the cushion installed the right way on the
wheelchair?
Does the Back Support maintain correct
support and control?
Is the Back Support adjusted correctly and
not modied adversely?
Are the laterals adjusted correctly?
Is the headrest adjusted correctly?
Is a certied Wheelchair Tie-down & Occu-
pant Restraint System being correctly used?
Is set-up as per the Transit Safety section and
Warnings in this user manual?
Is the primary caregiver knowledgeable
about the above points?
The 6 month checklist is a compulsory check to ensure that your Back Support is
maintained in a safe and functional condition. The examiner must check each item
on the checklist and place the date and their initials in the appropriate column for
that check. Failure to perform these checks may void warranty.
Health & SafetyHardware
HygieneUser Posture
Transit (if applicable)

05
SPEX BACK SUPPORT USER MANUAL 17 WWW.SPEXSEATING.COM
Product Log Form
Use this section to keep notes of any changes made to your Spex Seating system.
Date Set-Up/Checks/Amendments Signature Print Name

05
SPEX BACK SUPPORT USER MANUAL 18 WWW.SPEXSEATING.COM
Warranty
Each Spex product is carefully inspected for performance and is guaranteed to be free from defects in
materials and workmanship for a specied period from the date of purchase when used in normal
conditions. Should a defect in materials or workmanship occur within this period, Spex will, at its discretion,
repair or replace it without charge.
This warranty includes hardware, foam padding, outer covers, incontinence cover and peripheral supports.
This warranty does not apply to the general wear and use, including punctures, tears or burns or customer
abuse of any of the components.
Back Supports and Vigour, Spex and Flex Cushions 24 months
Dualtec Cushion, Seat Base and all other accessories 12 months
Claims and repairs should be processed through the nearest authorized Spex supplier. Except for express
warranties made herein, all other warranties, including implied warranties of merchantability and
warranties of tness for a particular purpose are excluded. There are no warranties which extend beyond
the description on the face hereof. Remedies for breach of express warranties herein are limited to repair or
replacement of the goods. In no event shall damages for breach of any warranty include any consequential
damages or exceed the cost of non-conforming goods sold.

05
SPEX BACK SUPPORT USER MANUAL 19 WWW.SPEXSEATING.COM

05
SPEX BACK SUPPORT USER MANUAL 20 WWW.SPEXSEATING.COM
Spex Ltd
Phone [phone]
Fax [phone]
[e-mail]
www.spexseating.com
32 Detroit Drive
Rolleston 7675
New Zealand EC REP
BEO MedConsulting Berlin GmbH
Helmholtzstr. 2
D-10587 Berlin, Germany
Tel: [phone]
US REP
Medicept
200 Homer Ave, Ashland, MA 01721
United States
Tel: [phone]