Duorest JUNIOR ai-050MDSF User manual

27, Gajaeul-ro32beon-gil, Seo-gu, Incheon, Korea, 22829
UserManual
Thank you for choosing DUOREST ergonomics chair. Before using your DUOREST chair, please
read the ‘Safety Instructions’ carefully, as it explains the correct and safe handling of the chair.
Basecampforyoursuccessfulachievement
Duorest_junior_en.indb 2 2018-07-18 오후 5:51:46

27, Gajaeul-ro32beon-gil, Seo-gu, Incheon, Korea, 22829
UserManual
Thank you for choosing DUOREST ergonomics chair. Before using your DUOREST chair, please
read the ‘Safety Instructions’ carefully, as it explains the correct and safe handling of the chair.
Basecampforyoursuccessfulachievement
Duorest_junior_en.indb 3 2018-07-18 오후 5:51:46

02
For warranty claim, you
shall refer to Barcode
Number underneath the
mechanism body.
27
 Howtoadjust
(ai-050MDSF, ai-050SDSF, KE-050MDSF, KE-
050CDSF, KE-050SDSF, KE-050PDSF)
31
 Howtoadjust
(DR-227DS, DR-280DDS, DR-280D DR-218ADS,
DR-218A, DR-289SE, DR-289SF, DR-289SR, DR-
289SG)
35
 TroubleshootingGuide
38
 LIMITEDWARRANTYTERM&CONDITIONS
Contents
03
 SafetyInstructions
05
 HowtoAssemble(ai-050MDSF)
07
 HowtoAssemble(ai-050SDSF)
09
 HowtoAssemble(KE-050MDSF)
11
 HowtoAssemble(KE-050CDSF)
13
 HowtoAssemble(KE-050SDSF)
15
 HowtoAssemble(KE-050PDSF)
17
 HowtoAssemble(DR-227DS)
19
 HowtoAssemble(DR-280DDS/DR-280D)
21
 HowtoAssemble(DR-218ADS/DR-218A)
23
 HowtoAssemble(DR-289SE/DR-289SF)
25
 HowtoAssemble(DR-289SR/DR-289SG)
Duorest_junior_en.indb 2 2018-07-18 오후 5:51:46

03
Safety Instructions
Donotliftyourlegsonahighsurfacewhensitting
ontheproduct
•
In the case that the product slips/falls, there’s possible
danger of serious injury and even death
Donotleantoofarontheproduct
•
It poses a risk of injury if the product falls
Donotuseexcessiveforceonthearmrest.
•
There is a risk of injury
Donotcrawlundertheproduct
•
There is a risk of damage if the product falls
Whenusingtheproduct,sitcorrectlymaintaining
normalposition
•
When leaning on the backrest, seat pan, or the armrest,
there is risk of injury
Whensomeoneissittingdown,donotspinorpush
•
There is a risk of damage
Donotputyourhandintheproduct’sassembling
andoperatingareas.
•
Your hand can get caught causing damage
Makesureinfants,children,andpetsdonotbiteor
suckontheproduct.
•
There is a risk of suffocation due to small, loose parts
Teachthechildhowtousetheproductproperly
andcheckuponthem
Safety Instructions
•
This product is a one-person chair that can be used
indoors (in the office and home).
•
It should not be used outdoors.
•
Tighten the bolts and handle bolts of the product once
every month.
•
When cleaning the product, use a vacuum cleaner or
wipe it with soft fabric
Thisisimportantinformationfortheuser’ssafety
andforpreventionofpropertydamage.Please
readcarefullytousetheproductcorrectly.
If directions are not followed, it can cause
death or serious injury.
If directions are not followed there could
be personal injury or property damage.
Usetheproductforitspurpose
•
Going to sleep on the product or using it to exercise can
cause serious injury including death when the product
falls over
Donotleanorstandupontheproduct
•
There could be serious injury when the product falls
over or rotates.
Duorest_junior_en.indb 3 2018-07-18 오후 5:51:46

04
•
The product itself and/or several connecting handle
bolts may be damaged or broken
Donotplaceorstoretheproductonaslope
•
When the product falls, the product and the floor may
be damaged due to impact
Donotusetheproductwhereitiswetorpolluted
•
If the product slips, it could cause injury or contaminate
the product
Donotplacetheproductnearahumidifier
•
When using a humidifier, the calcareous components
dissolved in the water may cause dust matter to
accumulate on the product.
Useafloormatwhenusingtheproductonsurfaces
thatcanbeeasilydamaged
•
The floor may become contaminated or damaged
Constantlyremovethedirtcompliedonthecaster
•
If the dirt is accumulated over time, it may become the
source of damage
Whencleaningastainedfabric,donottryto
disassembletheproductorwashitoutwithwater
•
It may alter the shape and cause the product to
malfunction in use
•
If the fabric is partly contaminated, rub with mild
detergent and use after it completely dries.
Donotusethefootresttogetonthechair.
•
It may cause damage and injury if the product falls over.
•
There is a risk of injury
Nomorethantwopeopleshouldsitontheseatpan
•
It may cause damage to the product and serious injury
Becarefulnottopinchyourtoesonthecaster
•
There could be damage to the toes caugh
Donotuseasharptoolsuchasaknifewhen
assemblingtheproduct
•
There is a risk of personal injury and product damage
Donotusefireontheproductorplaceitnearheat
suchasdirectsunlight
•
There is a risk of fire igniting
Donotthroworpushtheproductwithforce
•
It may hurt others and cause damage to product
Assembletheproductfollowinginstructionsonthe
manual
•
If the product is broken by not following the instruction
manual, the product cannot be fixed free of charge
under the warranty
Usegloveswhenassembling
•
Handling with bare hands may risk injury
Donotuseexcessiveforcewhenassembling
Duorest_junior_en.indb 4 2018-07-18 오후 5:51:46

05
How to Assemble(ai-050MDSF)
1
Insert five Dual-mode stop casters into
base.
2
Insert backrest frame into connection bracket.
How to Assemble
(ai-050MDSF)
PartsDescription
Backrest x 1 Seat x 1 Footrest x 1
Dualinder x 1
(Dual-mode Gas
Cylinder)
Base x 1
Dual-mode stop
caster x 5
User Manual x 1
* The above illustrations may be different from actual parts.
Dimension&Material
455mm
807/904mm
435mm
Material
Body Frame : Steel, Aluminum, Plastic and etc.
Cushion : Polyester-based and/or PU foam
Upholstery : Polyester
Duorest_junior_en.indb 5 2018-07-18 오후 5:51:47

06
5
Insert Dualinder into central hole of base.
6
After opening footrest holder, put Dualinder
in footrest holder(1). Then, tighten knob
clockwise(2).
☞Place the footrest 5mm higher from floor surface so that casters
can roll smoothly.
1
2
3
Tighten knob under seat clockwise so that
backrest and seat can be firmly fixed.
4
Insert Dualinder into central hole under seat.
☞For efficient use of Dualinder, place its lever to face the front of
chair as shown below.
Duorest_junior_en.indb 6 2018-07-18 오후 5:51:47

07
How to Assemble(ai-050SDSF)
How to Assemble
(ai-050SDSF)
PartsDescription
Backrest x 1 Seat x 1 Footrest x 1
Dualinder x 1
(Dual-mode Gas
Cylinder)
Base x 1
Dual-mode stop
caster x 5
User Manual x 1
* The above illustrations may be different from actual parts.
Dimension&Material
450mm
807/904mm
435mm
Material
Body Frame : Steel, Aluminum, Plastic and etc.
Cushion : PU foam
Upholstery : Polyester
1
Insert five Dual-mode stop casters into
base.
2
Insert backrest frame into connection bracket.
Duorest_junior_en.indb 7 2018-07-18 오후 5:51:47

08
5
Insert Dualinder into central hole of base.
6
After opening footrest holder, put Dualinder
in footrest holder(1). Then, tighten knob
clockwise(2).
☞Place the footrest 5mm higher from floor surface so that casters
can roll smoothly.
1
2
3
Tighten knob under seat clockwise so that
backrest and seat can be firmly connected.
4
Insert Dualinder into central hole of seat.
☞For efficient use of Dualinder, place its lever to face the front
of chair as shown below.
Duorest_junior_en.indb 8 2018-07-18 오후 5:51:48

09
How to Assemble(KE-050MDSF)
1
Insert five Dual-mode stop casters into
base.
2
Insert backrest frame into connection bracket
and tighten knob under seat clockwise so that
backrest and seat can be firmly fixed.
1
2
How to Assemble
(KE-050MDSF)
PartsDescription
Backrest x 1 Seat Body x 1 Footrest x 1
Dualinder x 1
(Dual-mode Gas
Cylinder)
Base x 1
Dual-mode stop
caster x 5
User Manual x 1
* The above illustrations may be different from actual parts.
Dimension&Material
455mm
877/974mm
435mm
Material
Body Frame : Steel, Aluminum, Plastic and etc.
Cushion : Polyester-based elastomer
Upholstery : Polyester
Duorest_junior_en.indb 9 2018-07-18 오후 5:51:48

10
5
After opening footrest holder, put Dualinder
in footrest holder(1). Then, tighten knob
clockwise(2).
☞Place the footrest 5mm higher from floor surface so that casters
can roll smoothly on the floor.
2
1
3
Insert Dualinder into central hole under seat.
☞For efficient use of Dualinder, place its lever to face the front
of chair as shown below.
4
Insert Dualinder into central hole of base.
Duorest_junior_en.indb 10 2018-07-18 오후 5:51:48

11
How to Assemble(KE-050CDSF)
1
Insert five Dual-mode stop casters into
base.
2
Insert backrest frame into connection bracket
and tighten knob under seat clockwise so that
backrest and seat can be firmly fixed.
1
2
How to Assemble
(KE-050CDSF)
PartsDescription
Backrest x 1 Seat Body x 1 Footrest x 1
Dualinder x 1
(Dual-mode Gas
Cylinder)
Base x 1
Dual-mode stop
caster x 5
User Manual x 1
* The above illustrations may be different from actual parts.
Dimension&Material
450mm
877/974mm
435mm
Material
Body Frame : Steel, Aluminum, Plastic and etc.
Cushion : Polyester-based elastomer and/or
PU foam
Upholstery : Polyester
Duorest_junior_en.indb 11 2018-07-18 오후 5:51:49

12
5
After opening footrest holder, put Dualinder
in footrest holder(1). Then, tighten knob
clockwise(2).
☞Place the footrest 5mm higher from floor surface so that casters
can roll smoothly.
2
1
3
Insert Dualinder into central hole under seat.
☞For efficient use of Dualinder, place its lever to face the front
of chair as shown below.
4
Insert Dualinder into central hole of base.
Duorest_junior_en.indb 12 2018-07-18 오후 5:51:49

13
How to Assemble(KE-050SDSF)
1
Insert five Dual-mode stop casters into
base.
2
Insert backrest frame into connection bracket
and tighten knob under seat clockwise so that
backrest and seat can be firmly fixed.
1
2
How to Assemble
(KE-050SDSF)
PartsDescription
Backrest x 1 Seat Body x 1 Footrest x 1
Dualinder x 1
(Dual-mode Gas
Cylinder)
Base x 1
Dual-mode stop
caster x 5
User Manual x 1
* The above illustrations may be different from actual parts.
Dimension&Material
450mm
877/974mm
435mm
Material
Body Frame : Steel, Aluminum, Plastic and etc.
Cushion : PU foam
Upholstery : Polyester
Duorest_junior_en.indb 13 2018-07-18 오후 5:51:49

14
5
After opening footrest holder, put Dualinder
in footrest holder(1). Then, tighten knob
clockwise(2).
☞Place the footrest 5mm higher from floor surface so that casters
can roll smoothly.
1
2
3
Insert Dualinder into central hole under seat.
☞For efficient use of Dualinder, place its lever to face the front
of chair as shown below.
4
Insert Dualinder into central hole of base.
Duorest_junior_en.indb 14 2018-07-18 오후 5:51:49

15
How to Assemble(KE-050PDSF)
1
Insert five Dual-mode stop casters into
base.
2
Insert backrest frame into connection bracket
and tighten knob under seat clockwise so that
backrest and seat can be firmly fixed.
2
1
How to Assemble
(KE-050PDSF)
PartsDescription
Backrest x 1 Seat Body x 1 Footrest x 1
Dualinder x 1
(Dual-mode Gas
Cylinder)
Base x 1
Dual-mode stop
caster x 5
User Manual x 1
* The above illustrations may be different from actual parts.
Dimension&Material
450mm
877/974mm
435mm
Material
Body Frame : Steel, Aluminum, Plastic and etc.
Cushion : PU foam
Upholstery : Polyester
Duorest_junior_en.indb 15 2018-07-18 오후 5:51:50

16
5
After opening footrest holder, put Dualinder
in footrest holder(1). Then, tighten knob
clockwise(2).
☞Place the footrest 5mm higher from floor surface so that casters
can roll smoothly.
1
2
3
Insert Dualinder into central hole under seat.
☞For efficient use of Dualinder, place its lever to face the front
of chair as shown below.
4
Insert Dualinder into central hole of base.
Duorest_junior_en.indb 16 2018-07-18 오후 5:51:50

17
How to Assemble(DR-227DS)
1
Insert backrest frame into connection
bracket.
2
Insert the handle bolt with its taper pin into the
hole in the connection bracket and then tighten
the handle bolt in a clockwise direction.
How to Assemble
(DR-227DS)
PartsDescription
Backrest x 1 Seat x 1 User Manual x 1
Dualinder x 1
(Dual-mode Gas
Cylinder)
Triple Y Base with
Dual-mode stop
caster x 1
Handle bolt with
taper pin
* The above illustrations may be different from actual parts.
Dimension&Material
445mm
943/1040mm
445mm
Material
Body Frame : Steel, Aluminum, Plastic and etc.
Cushion : PU foam
Upholstery : PU Leather and/or polyester
Duorest_junior_en.indb 17 2018-07-18 오후 5:51:51

18
You are recommended to tighten the handle
bolts for the backrests and the armrests
sometimes when it is loosened.
3
Insert the Dualinder into the hole of the seat.
☞For efficient use of Dualinder, place its lever to face the front
of the chair as shown below.
4
Insert Dualinder into the hole of the base.
Duorest_junior_en.indb 18 2018-07-18 오후 5:51:51

19
How to Assemble(DR-280DDS/DR-280D)
1
Insert Dualinder into central hole of base
after removing red cap on top of Dualinder.
How to Assemble
(DR-280DDS/DR-
280D)
PartsDescription
Seat Body x 1 Footrest x 1 User Manual x 1
Dualinder x 1
(Dual-mode Gas
Cylinder)
Triple Y Base with
normal caster x 1
(for DR-280D)
Triple Y Base with
Dual-mode stop
caster x 1
( for DR-280DDS)
* The above illustrations may be different from actual parts.
Dimension&Material
DR-280DDS DR-280D Material
445mm
800/897mm
445mm
445mm
797/894mm
445m
m
Body Frame : Steel, Aluminum,
Plastic and etc.
Cushion : PU foam
Upholstery : PU Leather and/or
polyester
Duorest_junior_en.indb 19 2018-07-18 오후 5:51:51