Chunc junior User manual

Wheelchairs for young people
User Manual
for
Chunc Junior, Junior 45°, Spica, Adapt and Accessories

Chunc Wheelchairs
Specmat Limited
Tarsmill Court
Rotherwas
Hereford HR2 6JZ
UK
t.+44 (0) 1432 377 512
f.+44 (0) 1432 377 516
e.[email protected]
Chunc Wheelchairs
Specmat Technologies Inc.
215 Dunavant Drive
Rockford
Tennessee TN 37853
USA
t.[phone]
f.[phone]
e.[email protected]
www.chunc.com

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Contents
Chapter Page
Welcome 4
Chunc Junior and Junior 45° 8
Chunc Spica and Adapt 10
Chunc Junior and Junior 45° setup 13
Chunc Spica setup 17
Chunc Adapt setup 19
Accessory setup and use 21
Everyday use 26
Safe transportation in a motor vehicle 32
Cleaning 35
Extended life, re-use, recycling and disposal 35
Mechanical maintenance 36
Product warranty and disclaimer 37
Product specication table 38

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Welcome
Congratulations on the purchase of your Chunc wheelchair. It has been designed and manufac-
tured with the utmost care and attention. At Chunc we believe in continuous improvement.
If you have any questions or comments about our customer service, product literature or
products we would be pleased to receive them.
Getting started
It is recommended you do not remove your Chunc wheelchair from the box or assemble it
without a Chunc representative, your distributor/dealer or a trained healthcare professional in
attendance.
Take care when unpacking your Chunc wheelchair and ask somebody to assist you with the
heavier parts. Check all ordered parts are present, in working order and are free from damage.
In the unlikely event you nd a fault, contact your supplier immediately.
Intended use, including transportation
The Chunc Junior, Junior 45° and Spica are manual attendant controlled paediatric wheelchairs.
The Chunc Adapt is a manual attendant controlled wheel base for use with a surrogate seating
system. A range of accessories is available which are intended to provide additional mobility,
postural management and adjustable seating solutions. The Chunc Spica caters for occupants
in ‘hip spica casts’and can also be used for other requirements such as radial leg extension
braces.
All Chunc wheelchairs are intended for a single occupant including children and young adults
with moderate to specialist needs such as cerebral palsy and whose mass does not exceed
54kg /125lb. The maximum load capacity (including an occupant up to 54kg) and any auxiliary
equipment (such as communication and respiratory aids) and, if applicable, surrogate seating
for the Adapt, should not exceed 75kg/165lb.
The wheelchairs are designed for indoor and outdoor use; however they are not intended for
use on rough terrain.
The Chunc Junior, Junior 45°, Spica and Adapt are suitable for use as a forward facing seat in a
motor vehicle when used in conjunction with 4 point tie down restraints (WTORS); see section
“Safe transportation in a motor vehicle”.
For your safety
At Chunc, safety is paramount in the product’s design, development and manufacture.
However, misuse and adverse environments can lead to potentially hazardous situations that
could result in injury or even death. It is therefore essential that this manual is read by all users
before use and kept with the wheelchair for future reference.
Users of Chunc wheelchairs; please distribute copies of this manual around your home, care

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home or school if you believe it will improve the usage of your Chunc wheelchair. This manual
can be downloaded from www.chunc.com
Before use
Before transferring the user, an inspection should be made of the wheelchair, ensuring all•
required parts are secured and in good working order.
Special attention should be paid to the orange hand tightened components and particu-•
larly the backrest xing caps and the caution label at the base of the backrest.
Ensure the wheelchair rolls freely, without excessive noise or vibration; if you are uncertain•
of the wheelchair’s performance, it should not be used.
Occupant safety
Never leave an occupied Chunc wheelchair unattended.•
Never exceeded the wheelchair’s occupant weight limit, or maximum load capacity, or use•
for any purpose outside the manufactures instructions.
Any non-upholstered surfaces may become uncomfortably hot or cold if the chair is left in•
extreme conditions or direct sunlight for extended periods of time. The seat surface may
also become heated and in extreme conditions giving a risk of injury.
Postural Management
Chunc wheelchairs are Class 1 medical devices and must not be used to seat any person•
without prior consultation of a qualied health care professional.
A qualied health care professional should be present when tting or adjusting the Chunc•
wheelchair and accessories to an occupant.
The occupant’s seating posture and the positioning of adjustable parts and accessories•
should be monitored closely and adjusted as directed by a health care professional in ac-
cordance with the instructions in this manual.
Ensure harnesses are tted to the manufacturer’s instructions and their adjustment moni-•
tored closely.
Any adjustments should be as directed by a health care professional and in accordance•
with the manufacturer’s instructions.

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Stability
Consider the stability of the wheelchair and occupant at all times, especially when en-•
countering slopes and uneven ground.
Movement of the user and the occupant’s body position can aect stability. Keep the user•
in a seated position whenever possible, with their back rmly against the backrest.
Do not place bags or any other unauthorized equipment on the framework.•
Ensure the anti-tip levers are engaged at all times where practical.•
When placing an occupant in a fully reclined Chunc Spica, consider their body position’s•
aect on stability.
Transportation
For transportation, it is recommended the occupant is transferred to a normal vehicle seat•
or surrogate car seat whenever possible.
The Chunc Junior and Junior 45°, and Spica can be used as a forward facing seat in a suit-•
ably adapted motor vehicle in conjunction with a 4 point tie down system with integrated
lap belt and vehicle-mounted shoulder belt.
The Chunc Adapt wheelbase with drop hook interface can also be used as detailed above.•
However, you should rst check the suitability of the surrogate seating system with your
provider.
Chunc wheelchairs have been crash tested with the tilt in space set to horizontal (seating)•
and with a Chunc headrest. We advise a Chunc headrest is tted during transportation.
Chunc have successfully crash tested to ISO 7176 19 and ANSI/RESNA WC/vol.1 section 19•
using a 54Kg crash test dummy. This test replicates a 30mph head on collision. Full guid-
ance is detailed in the transportation section of this user manual and must be read and
followed at all times.
Lifting
A minimum of two people should only attempt this operation.•
Ensure the handle grips are as high as possible and tightened, resting against the xed•
end caps.
If the Chair and occupant need to be lifted, lift using the front tie down points and the rear•
handle grips.
Do not lift the wheelchair by the footrests.•

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Wheel locks
The wheel locks are not intended to stop the wheelchair when in motion.•
Always apply wheel locks when the chair is stationary.•
To maintain brake eciency the tires should be replaced before they become tread-bare.•
Finger traps
Be careful operating the wheelchair, remaining aware of nger traps around moving parts,•
when removing and replacing parts or making adjustments.
Take extra care when operating the orange locking collet of the backrest and armrests.•
Observe the potential nger trap for both the occupant and operator between the rear•
wheel and chassis plates. It is possible to purchase a wheel guard from your supplier.
IMPORTANT UPDATE MAY 2008
CSK_484 15-05-2008 C/N 5569
INTENDED USE AND TRANSPORTABILITY
The Chunc 4554 and Chunc 4575 are intended for users whose weight does not exceed
54kg/125lb and 75kg/165lb respectively.
The maximum load capacity (including the occupant, Chunc options and any other auxiliary
equipment should not exceed 75kg/165lb for the Chunc 4554 and 95kg/210lb for the Chunc
4575.
When used as a forward facing seat in a motor vehicle, where possible, the seat (tilt in space)
should be set to a near horizontal position with a slight rearward bias (similar to normal vehicle
seat). The front castors should be positioned in a trialing (wheelchair forward running) position.
GENERAL SAFETY
Under certain set up conditions the footplates may foul with the front castors. This could initi-
ate a forward tip. Exercise caution when manoeuvring the wheelchair when set in an extreme
forward tilt.
Do not operate the wheel locks by hand unless the wheelchair is tted with a Chunc Pushing &
Braking aid. Ensure the wheelchair is on level ground, stable and supported.
Never leave an occupied Chunc wheelchair unattended. You should not park or let go of an
occupied wheelchair on a slope.
Beware of the occupants hands near the rear wheels when the Chunc 45 is in full rearward tilt.
CHUNC 4575 TILT IN SPACE
Operate the tilt in space using the right hand lever attached to the backrest underneath the
headrest mounting bar. Exercise caution when removing the backrest ensuring the cable is not
stretched or damaged. The backrest can then be placed on the seat when compacting for storage.

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Back cushion1.
Seat cushion2.
Seat pan bracket3.
Harness attachment4.
Wheelchair anchored pelvic belt attachment5.
Castor6.
Chassis plate7.
Rear wheel8.
Footplate9.
Anti tip lever10.
Wheel lock / tip assist11.
Tilt in space on/o lever12.
Snap over bracket13.
Gas strut14.
Chunc Junior and Junior 45°
Model shown: Chunc Junior

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Chassis moulding / front tie down15.
Front tie down symbol16.
Rear tie down17.
Leg rest brace tube18.
User manual19.
Collet bracket20.
Collet locking sleeve21.
Allen key holder22.
Hand grip23.
Back rest poles24.
Bent armrest25.
Indexing plate26.
Upper frame plate27.
Model shown: Chunc Junior 45°

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Hand grip1.
Back rest poles2.
Straight armrest3.
Upper frame plate4.
Drop hook rail5.
Front tie down symbol6.
Chassis moulding / front tie down7.
Snap over bracket8.
Footplate9.
Leg rest down poles10.
Anti tip lever11.
Castor12.
Wheel lock / tip assist13.
Chassis plate14.
Tilt in space on-o lever15.
Chunc Spica and Adapt
Model shown: Chunc Adapt

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Rear wheel16.
Gas strut17.
Rear tie down18.
User manual19.
Harness attachment20.
Wheelchair anchored pelvic belt attachment21.
Allen key holder22.
Collet bracket23.
Collet locking sleeve24.
Handle bar extensions25.
Back cushion26.
Seat cushion27.
Spica leg supports28.
Leg support release29.
Indexing plate30.
Model shown: Chunc Spica

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Chunc Junior and Junior 45° setup
Safety note: A qualied health care professional should be present when tting the Chunc
wheelchair and accessories to an occupant.
i
To make adjustments to the wheelchair’s setup, you may need to loosen a number of
indicated bolts, perform the adjustment and then re-tighten the bolts. An Allen key set is
located on the backrest to aid this.
Back recline• : Loosen 3 bolts (A) on both sides of the chair and reposition bolt (B) within
the indexing plate to determine the new recline angle. Re-tightened bolts (A).
Back height• : Adjust using 4 bolts (C).
Lumbar support• : A lumbar support can be located between the back pan and back foam.
This can be adjusted in height by removing the back cover and foam and positioning
where necessary.
Seat growth• : Remove seat cushion and lift the seat pan from 4 orange seat pan brackets.
Reposition 4 pan brackets using bolts (D).
Junior 45° only: For additional seat growth, remove 4 bolts (E) to allow side plate move-
ment back and forth.
Junior and Junior 45°: Snap seat pan back into place.
Chunc Junior and Junior 45° setup continued overleaf...

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Chunc Junior and Junior 45° setup (cont’d)
Safety note: A qualied health care professional should be present when tting the Chunc
wheelchair and accessories to an occupant.
i
To make adjustments to the wheelchair’s setup, you may need to loosen a number of
indicated bolts, perform the adjustment and then re-tighten the bolts. An Allen key set is
located on the backrest to aid this.
Leg rest angle• : Adjust using bolts (G) on both brackets. With the orange snap-over clip
secured, slide the brackets up or down. Re-secure the bolts.
Junior 45° only: It may also be necessary to reposition the leg rest brace tube by removing
bolt (F - on previous page) on both sides and repositioning backwards or forwards.
Safety note: You should not perform this adjustment on an occupied wheelchair.
Footplate height• : Adjust using bolts (I).
Safety note: Placing excessive weight on the footplates could lead to damage and cause
the wheelchair to tip forwards.
Footplate adjustment• : Adjust angle using bolts (J) and tilt using bolts (K).
Harness mounting points• : The wheelchair incorporates adjustable harness mounting
areas for positioning belts.
Lower harness mounting points• : Adjustable positioning is available on the lower por-
tion of the backrest framework (r). The harness attachment tube () mounted to the
upper frame plate can also be repositioned along the upper frame by removing Nyloc
nut, repositioning to desired hole in frame and re-fastening.
Harness upper mounting point• : The upper mounting area (o) can be adjusted verti-
cally using bolts (L) on both sides.
Safety note: Ensure harnesses are tted to the manufacturer’s instructions and their
adjustment monitored closely. Any adjustments should be as directed by a health care
professional and in accordance with the manufacturer’s instructions.
US customers only• : When used as a wheelchair anchored pelvic belt attachment,
ensure that any repositioning of the harness attachment tube () does not contravene
positional requirements as detailed in the safe transportation section of this manual.

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Chunc Spica setup
Safety note: A qualied health care professional should be present when tting the Chunc
wheelchair and accessories to an occupant. In addition, the back rest recline and leg splint casts
introduce uncertainties in weight distribution. When placing an occupant in a Chunc Spica and
operating it, consider carefully their body position and weight distribution, especially when in
the reclined position.
i
To make adjustments to the wheelchair’s setup, you may need to loosen a number of
indicated bolts, perform the adjustment and then re-tighten the bolts. An Allen key set is
located on the backrest to aid this.
Leg support adjustment:•
Angle of the leg supports• : Loosen, adjust and re-tighten bolt (A) located on underside
of leg support bracket.
Footplate along length of leg support• : Adjust using bolt (B).
Footplate height and angle• : Adjust using two bolts (C).
Leg supports (fore and aft)• : Adjust positions of either leg support using bolts (D) and / or
(E).
Back recline• : Loosen 3 bolts (F) on both sides of the chair and reposition bolt (G) within
the indexing plate to determine the new recline angle. Ensure bolts (F) are re-tightened
thereafter.
Back height• : Adjust using 4 bolts (H).
Handlebar attachment• : The handlebar attachment may be necessary when the wheel-
chair is in its reclined position. To t or remove the handlebar attachment, you will need
to reposition the handgrips. To enable this, twist the grip anticlockwise to loosen and
clockwise to tighten.
Safety note: Check the handgrips are secure before maneuvering the wheelchair.
Fitting the handlebar attachment• : Remove the bolts (I) and xed end caps. Slide the
handgrips o the back poles, secure the handlebar attachment with 2 bolts (J) sup-
plied. Ret the xed end caps. Remove the two bolts (K) and associated xed end caps.
Slide the handgrips on the handlebar attachment and re-secure xed end caps.
Seat growth• : Refer to Chunc Junior and Junior 45° setup.
Harness mounting points• : Refer to Chunc Junior and Junior 45° setup.

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Chunc Adapt setup
Safety note: A qualied health care professional should be present when tting the Chunc
wheelchair and accessories to an occupant. Ensure the wheelbase / surrogate seating combina-
tion has been passed by a qualied health care professional for stability before use. Please pay
attention to the safety label situated on the rail.
i
To make adjustments to the wheelchair’s setup, you may need to loosen a number of
indicated bolts, perform the adjustment and then re-tighten the bolts. An Allen key set is
located on the backrest to aid this.
Back recline• : Refer to Chunc Junior and Junior 45° setup.
Rail width adjustment• : Both 15”and 18”rail width models are available. To adjust, remove
the 4 bolts (A), add or remove spacers (B) and re-secure with the appropriate length bolts
from the kit provided.
Safety note: You should not perform this adjustment on an occupied wheelchair.
Rail length adjustment• : Loosen the 4 bolts (A). Use the 4 bolts (C) to adjust the position of
both side plates. Ensure bolts (A) are re-tightened thereafter. The back recline should also
be re-adjusted to support the back of a surrogate seating system.
Safety note: You should not perform this adjustment on an occupied wheelchair.
Harness mounting points• : Refer to Chunc Junior and Junior 45° setup.
Additional lower harness mounting• : Extra mounting is oered on the drop hook rails
().