HEPRO G1 Standard User manual

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 1 av 26

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 2 av 26
HEPRO –aid manufacturer
HEPRO is a Norwegian industrial company that develops, manufactures and sells technical aids for
adults and children with mobility impairment. The company was established in 1987 and has to day
about 30 employees. The company`s headquarter and factory is located in Rognan, Nordland:
Hepro AS, Øvermoan 9, 8250 Rognan, N-Norway
Technical Service
Services are performed in the factory at Rognan, but also by partners in many parts of the country. Our
sales personnel are also trained in technical maintenance. By defect of the products or other queries,
please contact your distributor or importer.
Warranty
When used in accordance with the Operating Instructions and the User Reference Manual, Hepro
provides a two year warranty against defects in material and workmanship. Please address warranty
complaints or other inquiries about the product to your distributer or importer. Always state the
product`s serial number as a reference.
The product is designed, tested and produced in conformity to following regulations and requirements:
NS-EN 12182
Technical aids for disabled persons –General requirements and test methods”.
NS-EN 1335-1
Office work chair. Dimensions –Determination of dimensions.
NS-EN 1335-2
Office work chair. Safety requirements.
NS-EN 1335-3
Office work chair. Safety test methods.
EN 60601-1
Medical electric equipment Part 1: General requirements for safety.
EN 60601-1-2
Medical electric equipment Part 1: General requirements for safety –1 Collateral standard: Electromagnetic
compatibility –Requirements and test.
NS-EN 1021-1
Furniture –Assessment of the ignitability of upholstered furniture –part 1: Ignition source: smouldering
cigarette.
NS-EN 1021-2
Furniture –Assessment of the ignitability of upholstered furniture –part 1: Ignition source: match flame
equivalent.
93/42/EØF
marked. (Equipment class I)
NS-EN ISO 14971
Medical devices. Application of risk management to medical devices.

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 3 av 26
Content
1. Short product description.............................................................................................................................. 4
1.1 Type / designation ................................................................................................................................. 5
1.2 Technical specifications................................................................................................................................ 6
2. Work Descriptions ......................................................................................................................................... 7
2.1 Replace components ............................................................................................................................. 7
2.1.1 Front wheel casters for Work-and Coxit-chairs (including Standing support mod. S2)................ 7
2.1.2 Rear wheel casters for Work- and Coxit-chairs (including Standing support mod. S2) ................ 7
2.1.3 Casters for Standing support chairs.............................................................................................. 7
2.1.4 Brake bail between casters-rear wheel (including Standing support mod. S2) ............................ 7
2.1.5 Hexagonal rod between the rear wheels mod. E1 Kilo................................................................. 7
2.1.6 Gas spring for G1 and G2, Work- and Coxit-chairs ....................................................................... 8
2.1.7 Gas spring for Standing support chairs ......................................................................................... 8
2.1.8 Lifting Unit for G1 and G2, Work- and Coxit-chairs ...................................................................... 8
2.1.9 Lifting Unit for E1 and E2, Work- and Coxit-chairs........................................................................ 8
2.1.10 El.lifting column for E1 Kilo .......................................................................................................... 8
2.1.11 Seatlift actuator for E1 and E2, Work- and Coxit-chairs ............................................................... 9
2.1.12 El.control box complete w/batteries ............................................................................................ 9
2.1.13 Replace batteries in the el.control box......................................................................................... 9
2.1.14 Switch box complete with charger connection............................................................................ 9
2.1.15 Wheel base complete ........................................................................................................................ 9
2.1.16 Wheel base complete model E1 Kilo ............................................................................................... 10
2.1.17 Replace cushions........................................................................................................................ 10
2.1.18 Replace ¼-foot rest .................................................................................................................... 10
2.1.19 Replace the brake bails .............................................................................................................. 10
2.2 Cleaning ............................................................................................................................................... 10
2.3 Maintenance routines ......................................................................................................................... 11
2.3.1 Periodic inspection...................................................................................................................... 11
2.3.2 Preparation for reuse.................................................................................................................. 11
2.3.3 Adjustments associated with repair and maintenance .............................................................. 11
2.4 Feature Control and testing of product and accessories..................................................................... 12
2.5 Adjustments ............................................................................................................................................... 13
2.5.1 Adjusting the seat height ............................................................................................................ 13
2.5.2 Adjusting the brake..................................................................................................................... 13
2.6 Electrical equipment............................................................................................................................ 14
2.6.1 System Structure......................................................................................................................... 14
2.6.2 Charging the batteries on ELEKTRO - models ............................................................................. 14
2.6.3 Electrical form............................................................................................................................. 15
2.6.4 Wiring diagram for 9-pin contact................................................................................................ 15
2.6.5 Troubleshooting on the ELEKTRO-models. ................................................................................. 16
3 Parts Catalog................................................................................................................................................ 16
3.1 Structure.............................................................................................................................................. 16
3.2 Split-drawings and photos ................................................................................................................... 16
3.2.1 Wheelbase complete Hepro Work chair G - Gasso.................................................................... 17
3.2.2 Wheelbase complete Hepro Work chair E- Elektro ................................................................... 18
3.2.3 Wheelbase complete Hepro Work chair E1 Kilo ........................................................................ 19
3.2.4 Wheelbase complete Hepro Standing Support Chair, S2 w/central brake................................. 20
3.2.5 Wheelbase complete Hepro Standing Support Chair ................................................................. 21
3.2.6 Seat mechanism for Work-/Coxit-chairs and Standing support chairs ....................................... 21
3.2.7 Armrest ....................................................................................................................................... 24

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 4 av 26
1. Short product description
Hepro`s work chairs, Coxit-chairs and Standing support chairs covers a wide range of models and
variants. They are tested and approved in accordance with the NAV`s requirements. Permitted user
weight is max. 150 kg. The model E1 Kilo, designed for heavy users, has allowed user weight 230 kg. The
Standing support chairs is tested and approved for user weight up to 120 kg.
The wheel base for the work chairs and Coxit-chairs is four armed and of cast aluminum. It is painted with
powder coating, which provides a robust and durable surface. For the model E1 Kilo the wheel base is of
welded steel. When designed the emphasis was to get best possible space in front of the wheelbase to
simplify the transfer by «kicking» oneself forward with the legs. To the Standing support chairs one use a
five armed wheel base of cast aluminum.
Rear wheels for work chairs and Coxit-chairs have hand operated central brake, which locks both roll and
rotation. The casters are of plastic, and designed to be most gently to the ankles.
The lifting unit for work chairs and Coxit-chairs are available in two models, manually seat lift with gas
spring and electric seat lift with actuator. Both models have regulation height of 100mm,150mm and
200mm, 150 as standard and 100 and 200 as accessories. The seat height can be changed by further
adjustment of the central unit`s mounting height (See section 2.5.1). For the model E1 Kilo there is one
lifting column with 100mm electrical regulation height. To the Standing support chairs there are several
gas springs with different lengths.
The seat unit for the work chairs has five main models, Standard, Aktiv, Tilto, Synkron and Kilo, all
ergonomically designed to provide the best possible comfort. The models have several variants of seats
and backrests. By combining these one can adjust the product to the great majority of users. Coxit seat
with angle adjustable flaps is delivered to the Coxit-model. There are special seats (Sadel and Alternativ)
to the Standing support chairs.
Seat cushions are «snapped» fastened and can be removed without tools with the exception of the seat
cushion ”Aktiv” where the complete seat is removed from the sliders. The Sadel seat has no loose
cushion, but is delivered as a complete seat.
Backrest cushions are ”snapped” fastened and can be removed without tools.
Regulations: Seat height, backrest height, angle adjustments of backrest and seat, adjust tilt function to
body weight (Tilto and Synkron), armrest height, armrest width, armrest length and the position of brake
handle. Can be done without the need of tools.
Adjustments: Seat height can be adjusted beyond regulation without tools. (Not the model E1 Kilo and
the Standing support chairs).

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 5 av 26
1.1 Type / designation
Item no.
Model
Description
30000
Hepro G1 Standard
Gas lift, w/o rotation
30001
Hepro G2 Standard
Gas lift, w/ rotation
30051
Hepro E1 Standard
Electric lift, w/o rotation
30052
Hepro E2 Standard
Electric lift, w/ rotation
30007
Hepro G2 Coxit
Gas lift, w/ rotation
30058
Hepro E2 Coxit
Electric lift, w/ rotation
30003
Hepro G2 Tilto EHR
Gas lift, w/ rotation
30054
Hepro E2 Tilto EHR
Electric lift, w/ rotation
30064
Hepro E1 Kilo
Electric lift, w/o rotation, max user weight 230 kg
30004
Hepro G2 Synkron HR
Gas lift, w/ rotation, synchronous movement
30056
Hepro E2 Synkron EHR
Electric lift, rotation, synchronous movement
30030
Hepro G1 Aktiv
Gas lift, w/o rotation
30031
Hepro G2 Aktiv
Gas lift, w/ rotation
30100
Hepro S1
3 levers, free rotation, sliding knobs, backrest
30101
Hepro S2
3 levers, wheel Ø100, central break, saddle seat, backrest
30102
Hepro S3
2 levers, free rotation, load brake
30104
Hepro S6
3 levers, w/o rotation, load brake
30106
Hepro S8
2 levers, w/o rotation, load brake
30107
Hepro S9
2 levers, free rotation, chest support
30108
Hepro S10
3 levers, free rotation, saddle seat, backrest

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 6 av 26
1.2 Technical specifications
Measurements according to NS-EN 1335.
Measured
Unit
G1/G2
Std
E1/E2
std
G2 Coxit
E2 Coxit
G1/G2
Tilto
E1/E2
Tilto
E1
Kilo
G1/G2
Synk.
E1/E2
Synk.
G1/G2
Aktiv
Seat height
cm
40-67
45-67
43-67
46-67
47-71
50-76
51-66
44-65
47-73
43-70
Regulated seat lift
cm
15
15
15
15
15
15
10
15
15
15
Max adjustment seatlift
cm
+12
+7
+9
+6
+9
+11
+5
+6
+11
+12
Seat depth
cm
42
42
46
46
44-54
44-54
46-60
41-57
41-57
42-49
Seat size (BxD)
cm
46x42
46x42
48x46
48x46
47x47
47x47
55x50
47x47
47x47
43x43
Seat angle reg., backw.
⁰
0
0
-3, +8
-3, +8
-13
-13
-
-9
-9
-7
Seat angle reg., forw.
⁰
20
20
-3,+45
-3,+45
+7
+7
-
+5
+5
+6
Backrest height reg.
cm
8
8
8
8
10
10
8
9
9
10
Backrest size (BxH)
cm
40x36
40x36
40x36
40x36
44x63
44x63
40x36
44x63
44x63
37x43
Backrest angle reg
⁰
5, -48
5, -48
5, -48
5, -48
0, +28
0, +28
5, -48
0, -21
0, -21
23
Armrest size, (LxB)
Cm
35x8
35x8
35x8
35x8
35x8
35x8
35x7
35x8
35x8
35x8
Armrest height reg.
cm
18-26
18-26
18-26
18-26
19-27
19-27
17-27
19-27
19-27
18-26
Width between armrest
cm
42-52
42-52
42-52
42-52
42-52
42-52
46*63
42-52
42-52
42-52
Wheel size, diam.
cm
10
10
10
10
10
10
12,5
10
10
10
User weight, max
kg
150
150
150
150
150
150
230
150
150
150
Product weight
kg
22
28
23
29
35
41
39
29
35
22
Measured
Unit
S1
S2
S3
S6
S8
S9
S10
Seat height
cm
51-69
49-62
54-72
54-72
56-74
54-72
54-72
Seat size (BxD)
cm
41x38
41x38
45x24
41x38
Ø35
35x32
41x38
Seat angle reg., backw.
⁰
-14
-14
-8
-14
-7
-8
-14
Seat angle reg., forw.
⁰
+18
+18
+16
+18
+19
+16
+18
Backrest height reg.
cm
10
10
10
10
-
10
11
Backrest size, (BxH)
cm
38x23
38x23
38x23
38x23
-
22x26
38x23
Backrest angle reg.
⁰
7, -59
7, -59
7, -59
7, -59
-
7, -59
7, -59
Wheel size, diam.
cm
-
10
5
5
5
5
5
User weight, max
kg
120
120
120
120
120
120
120
Product weight
kg
11
16
11
11
8
11
11
MATERIALS AND COMPONENTS
Wheel base –model 2004.
Powder coated aluminum
Wheel base –model Kilo
Powder coated steel
Seat-/backrest shell
Cast plastic
Cushion
Cast PUR-foam
Fabric
Furniture fabric 100 % Trevira CS

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 7 av 26
2. Work Descriptions
General
Never use other parts than those stated in the split images with corresponding item numbers in Chapter
3. If other parts are used, the product could loose its accreditation as an aid product. If for any reason
one wants to deviate from this rule, Hepro has to be contacted for review and possible approval.
2.1 Replace components
2.1.1 Front wheel casters for Work-and Coxit-chairs (including Standing support mod. S2)
Unscrew the screw that locks the caster to the wheel base.
The caster is now loose and can be taken out. Be aware of the difference between casters for
front- and rear wheels.
Assemble in reverse order. Tighten the screw properly.
2.1.2 Rear wheel casters for Work- and Coxit-chairs (including Standing support mod. S2)
Remove the brake bail as described in 2.1.4.
Unscrew the screw that locks the caster to the wheel base.
The caster is now loose and can be taken out. Be aware of the difference between casters for
front- and rear wheels. (see section 3.).
See 2.5.2 for adjusting the brake force.
After adjusting, replace the caster and the screw and tighten properly.
2.1.3 Casters for Standing support chairs
Remove the caster by pulling it directly out of its hole.
Assemble it by pushing the pin into the hole.
2.1.4 Brake bail between casters-rear wheel (including Standing support mod. S2)
Activate the brake for easy working position.
Unscrew the two setscrews that lock the brake lever width regulation, and remove the lever.
Take away the metal bushing. (see sect.2.1.19).
Unscrew the bolt that keeps the bails together.
The brake bails are now apart and can be taken away in two parts.
Assemble in reverse order.
2.1.5 Hexagonal rod between the rear wheels mod. E1 Kilo
The plastic caps on top of each rear wheel are removed and pushed away (along the hexagon
rod).
Pull out the hexagonal rod and remove it.
The hexagonal rod and/or the adapter, fastened with a setscrew on the underside, can now be
exchanged.
Assemble in reverse order. Check that the brake lever adapter angle is correct for user
operation.

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 8 av 26
2.1.6 Gas spring for G1 and G2, Work- and Coxit-chairs
Disassemble the seat shell. For the seat G1 and G2 Aktiv, see sect. 2.1.17.
Special for Synkron and Tilto, loosen the wire for seat lift and seat sliding.
Loosen the rotation release or the rotation lock that keeps the central unit`s sliding tube to the
seat mechanism. (Not the mod. G1 Std. w/o rotation, item no. 30000).
Remove the splint under the central unit, and the wheel base with the central unit can be
removed.
The gas spring is now accessible, and can be loosened by «lifting» the chair holding the gas
spring and «strike» with a plastic hammer against the seat mechanism in front of the gas spring.
The gas spring is now loose and can be replaced with a new one. Don`t forget the color disc that
indicates the force in the gas spring.
Put the wheelbase with the central unit back in place, and set the splint back..
The rest assembly in reverse order.
2.1.7 Gas spring for Standing support chairs
Strike the wheelbase and the seat mechanism with a plastic hammer when lifting the chair by
the gas spring.
The gas spring is now loose and can be replaced with a new one.
Assembling in reverse order.
Do not loosen the bushing fixed on the wheelbase with central brake on model S2.
2.1.8 Lifting Unit for G1 and G2, Work- and Coxit-chairs
Disassemble as for changing the gas spring, see sect. 2.1.6.
Loosen the lifting unit from the wheel base by unscrewing the lock bolt.
Take away the lifting unit.
Replace with a new lifting unit in desired height, and adjust correct according to the wheel
base.
Secure the lock bolt.
The rest assembly as for the gas spring. (2.1.6).
2.1.9 Lifting Unit for E1 and E2, Work- and Coxit-chairs
Disassemble as for changing seat lift actuator. (2.1.11).
Loosen the lifting unit from the wheel base by unscrewing the lock bolt.
Take away the lifting unit.
Replace with a new lifting unit in desired height, and adjust correct according to the wheel
base.
Secure the lock bolt.
The rest assembly, see sect. 2.1.11.
2.1.10 El.lifting column for E1 Kilo
Disconnect the cable for the el.lifting column from the el.control box..
Disassemble the seat unit with the bracket from the top of the lifting column and take it away.
Unscrew the bolts securing the lifting column to the wheelbase. It is used special nuts which
locks it to the frame, so it is only need of an Unbraco key to loosen the column.
Assemble a new lifting column in the same position as the old one, cable down and backwards
to the control box.
Rest assembly in reverse order.

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 9 av 26
2.1.11 Seatlift actuator for E1 and E2, Work- and Coxit-chairs
Disassemble the seat shell.
Special for Synkron and Tilto, loosen the wire for seat lift and seat sliding.
Loosen the rotation release or the rotation lock that keeps the central unit`s sliding tube to the
seat mechanism.
Disconnect the cable for the actuator from the el.control box and loosen it from the
strip/protection stocking.
Unscrew the bolt w/2 Nord-Lock washers under the central unit.
Now the wheel base with the central unit can be removed.
The complete actuator is now accessible. Unscrew the bolt on the seat mechanism top side
aprox. 5mm and strike with a plastic hammer on the bolt to loosen the actuator from the seat
mechanism.
The actuator can now be taken away.
Replace with a new actuator in the same position as the old one.
Replace the wheel base with the central unit, and secure the bolt with the two Nord- Lock
washers. It is best to use blue Locktite.
The rest assembly in reverse order.
2.1.12 El.control box complete w/batteries
Disconnect the cables from the el.control box.
Unscrew the two screws holding the el.control box bracket to the wheel base.
Loosen the box from the bracket (4 screws).
Assemble in reverse order.
2.1.13 Replace batteries in the el.control box
Disassemble as described in 2.1.8.
Open the cover on the el.control box by bending the lock clips with a screw driver.
The batteries, connected with cable terminals, are now free and can be disconnected. Be aware
of which is + and -.
Assemble in reverse order.
2.1.14 Switch box complete with charger connection
Disassemble the switch box from the seat shell and loosen possible clips on the cable.
Take away the protection stocking around the cable for the actuator and the switch.
Disconnect the switch cable from the el.control box.
Connect a new switch cable, and test it.
Assemble in reverse order.
2.1.15 Wheel base complete
Unscrew the lock bolt which secures the lifting unit to the wheel base.
Take away the central unit with the seat unit. On the model E1 and E2 you must also disconnect
the el.control box.
Assemble in reverse order.
Adjust the lifting unit according to forward direction of the wheel base.
Secure the lock bolt.
Replace the bracket with the el.control box.

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 10 av 26
2.1.16 Wheel base complete model E1 Kilo
Disassemble the lifting column as described in sect. 2.1.10.
Complete wheelbase is now loose and can be replaced.
Assemble in reverse order.
2.1.17 Replace cushions
For all models except mod. G1/G2 Aktiv, E1 Kilo and Standing support:
Remove the cushion by bending it loos with hand or with help of a flat screw driver.
Replace with a new or newly washed cushion. A snap sound is heard for every snap lock.
For cushion mod. G1/G2 Aktiv the plastic shell sticks to the cushion. The whole seat is moved forward
out of the slider. A «tap» midst of the shell is held down (with f.i. a flat screwdriver) to release the seat
from the slider.
The seats for E1 Kilo and the Standing support chairs have not loose cushions, but are delivered as
complete seats and must be replaced in its entirety. They are fastened to the seat mechanism with four
screws.
2.1.18 Replace ¼-foot rest
Putt the chair in a position to have easy access to the foot rest mount.
Unscrew the foot rest mount on both sides.
Remove the ¼ foot rest.
Assemble in reverse order.
2.1.19 Replace the brake bails
Remove the brake lever.
Bend the metal bushing and remove it.
Loosen the screw and remove it.
The brake bails can now be taken away and replaced.
The metal bushing can be put back, and the corners
bended again.
Rest assembly in reverse order.
2.2 Cleaning
Cleaning method
The products are not designed to be washed in automatic washing machine!
Cushion w/fabric can be vacuumed or cleaned with special furniture cleaning solution. The
fabric can be washed in water up to 60 °C.
Old and dirty cushions are recommended, of hygiene conditions, replaced when recycling the
chair.
Electrical components must be wiped clean with a damp cloth, and must never be exposed to
flushing.
Painted frame and shelf can be cleaned gently with a high-pressure washer after the electrical
components are properly covered and ”sealed”. It is important to check that the plastic cover,
that protects the top of the gas spring, is in place. If not corrosion will lead to damaged the gas
spring.

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 11 av 26
After flushing, the electrical components must be ”unpacked” before the product is set dry.
Casters/wheels must be cleaned for dirt and hair. Easiest way to do it is to use a thin
screwdriver or a sharp plier.
Recommended detergents
For cleaning of fabric upholstery, use normal upholstery cleaning solution, sold in stores.
If the cushion or fabric for cushion is washed, one must be careful with flushing all the
detergents out of the PUR-foam, and dry it properly.
On lacquered steel parts and plastic shelf strong soap water can be used.
If high-pressure washing is used, detergent designed for and approved for exterior cleaning of
car paint can be used.
After high-pressure washing, the chair`s joint and bolts must be lubricated.
2.3 Maintenance routines
2.3.1 Periodic inspection
GENERAL
It is basically sufficient with an inspection when recycling.
PRODUCTS WITH SPECIAL LOADS
The product has no special need for periodic inspection, if it is a standard product used without
particular or special loads.
If the product is exposed to special loads, it would be an advantage for all that in each case it will be
established necessary maintenance. Hepro can of course be of help with advice and guidance, if wanted.
2.3.2 Preparation for reuse
To ensure that the user of a work chair will get the best and safest possible aid when recycling, it is
important that the aid undergo a thorough technical control and is properly cleaned before it is delivered
to a new user. As a supplier we believe that the control described in sect.2.4 is sufficient to ensure safety
and functionality.
Worn parts have to be checked and replaced if they are considered to lead to reduced safety.
2.3.3 Adjustments associated with repair and maintenance
GENERAL
Check the following and if necessary, tighten or adjust:
The lock bolt that secures the lifting unit to the wheel base.
The screws that secure the seat- and backrest shell to the seat mechanism.
The locking force for the seat angle adjustment.
The hand operated central brake.
The screws securing accessories.
CASTERS / WHEELS
Check securing and shafts and if necessary, tighten or adjust.

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 12 av 26
2.4 Feature Control and testing of product and accessories
Item no.:
Lifting unit 150 200 100 ……
G E Aktiv Standard Tilto Synkron Coxit Kilo Stand.support 
CONTROL:
CONTROL METHOD:
SPEC.:
Performed
SEAT UNIT
Backrest cushion, Type:
Visual
Ok Cleand Replaced 
Backrest shell - plastic
Visual
Seat cushion, Type
Visual
Seat shell - plastic
Visual
Armrest, Type
Visual, Adjusted and tested
Seat mechanism, Type
Visual
Operate levers seat mechanism
Visual and tested
LIFTING UNIT w/gas spring
Complete
Visual and tested
Gas spring
Visual and tested
LIFTING UNIT w/el.actuator
Complete
Visual and tested
Actuator
Visual and tested
WHEEL BASE –4 armed
Wheel base
Visual
Secure bolt w/o slack
Visual and tested
¼-Footring w/o damage
Visual and tested
Casters / knobs
Visual and tested
WHEEL BASE –5 armed
Wheel base
Visual
Casters / knobs
Visual and tested
ELEKTRO:
El.box
Visual, secured
Switch box
Visual and tested
Cables and plugs, undamaged
Visual
Secured against injury
FINAL CHECK
Noise and vibration
Tested
Appearance generally
Visual
Clean, undamaged
Product marking
Visual
Serial no., month/year produced
Covers, undamaged
Visual
Complete product control
Tested
Accessories, coments
Serial no.:
Date:
Controled by:

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 13 av 26
2.5 Adjustments
2.5.1 Adjusting the seat height
Beyond the regulation of the gas spring or actuator the seat height can be adjusted by adjusting the
attachment point for the central unit:
Tilt the chair to the back.
Loosen the locking handle (B) - (counter clockwise).
Central unit is now loose and can be raised or lowered to desired
position.
Check that the seat unit is in line with the wheel base.
Secure the locking handle (B)
2.5.2 Adjusting the brake
The force that locks the rear wheel when the brake is activated can be adjusted as follows:
1. Take away the brake lever (see sect. 2.1.19) .
2. Unscrew the screw that secure the caster to the wheelbase, and remove it.
3. The casters can now be taken out of the wheel base. Be aware of the red marking position!
4. Turn the plastic nut on top of the caster, to the left or to the right, to change the brake force.
Clockwise will increase the force and counter clockwise decrease it.
As a standard the brake is activated by moving the brake lever forward. By turning the whole
caster 180 dgr. and mount it with the red marking to the other side, the brake will be activated
by moving the lever backwards.
5. Assembly in reverse order.
B

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 14 av 26
2.6 Electrical equipment
2.6.1 System Structure
GENERAL
All electrical components have cable and connector fixed. If something is wrong with the component, it is
replaced including cable and connector.
The diagram below shows schematic the electrical wiring and connections between the components.
Detailed information with description, item no. and numbers appears in sect. 3.
EL.CONTROL BOX
In the el.control box there are 2 pcs. 12V, 2,7 or 2,9Ah batteries which are connected in series and gives
24V opertation voltage.
The batteries are sealed lead-acid batteries, where the electrolytic liquid is absorbed in a mat of glass
fibre. This makes it possible to place the batteries in whatever position..
The el.control box has a built in curcuit which disconnect the voltage to the actuator when it reach its end
position.
BATTERY CHARGER
The charger is a model Linak CH 08, for line voltage 130V, 50Hz. It is double isolated and approved by
NEMKO (Certificate no. L91991).
Charging voltage is 27,6VDC +/-2%. Maximum charging current is 300mA. It is recommended to carry
out the charging at night. Then the chair will have up to 8 hours of charging.
2.6.2 Charging the batteries on ELEKTRO - models
The batteries MUST be charged with the included charger that provides 24V. The charger is connected to
the socket located on the same box as the switch that regulates the seat height.
When the batteries needs recharging, you will hear a beep that indicates this. The charger stops charging
when the batteries are fully charged. The batteries will not be damaged if the charger is connected for a
time, after charging has been completed.
It is good for the batteries to be charged regularly, preferable every day if the chair is in daily use. When
the chair is not in use, it should be recharged at least once a month.
The seat can be raised or lowered during charging.
Actuator
El.box w/battery,
and built in stop
function for the
actuator.
Switch box
w/contact for
charger
Cable
Cable

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 15 av 26
2.6.3 Electrical form
2.6.4 Wiring diagram for 9-pin contact
The plug on the cable from the switch box is seen from
the pin-side (not the solder side). It is only the colors with
fat types that are used on standard product.
”The femail connector” on the el.control box is seen from
outside. It is only the colors with fat types that are used.
BROWN
BLUE
GREY
WHITE
ORANGE
YELLOW
GREEN
RED
BROWN
BLUE
GREY
WHITE
ORANGE
YELLOW
GREEN
RED
BROWN (-)
GREEN (Up)
RED (+)
ORANGE
(Down)
BLUE (Next to motor)
BROWN
M
El.control box w/batteries,
Charger plug
Switch
(Lift/Lower)
Actuator
=Bryterboks
=Plugg

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 16 av 26
2.6.5 Troubleshooting on the ELEKTRO-models.
GENERAL
It is important first of all to ascertain what in fact is wrong!
Since the product is modular built with ”closed” cable connections and molded plugs, we recommend
from experience the following:
Test the product as far as possible, and find the problem.
Are the batteries fully charged? If not, charge them before further control is accomplished.
The switch box is the component most exposed and is the first to be checked.
Base don the diagram showing the plugs on the el.control box the following can be tested::
oCheck 24V DC between ”Red” and ”Brown”.
oTest the switch function by short-circuit the ”Red” and ”Green”. Then the chair shall og
up.
oCorresponding test by short-circuit ”Red” and ”Orange will make the chair go down.
If this works, it is the switch that is defect and has to be replaced.
If this does not work, it is the el.control box that is defect and has to be replaced.
3 Parts Catalog
3.1 Structure
General the products are built with the following main components.
Wheel base.
Lifting Unit.
Seat Mechanism.
Standard Seats and Backrests together with alternativ accessories appears in the brochure.
3.2 Split-drawings and photos
Stated in the following are descriptions and item numbers on the components included in standard
products.

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 17 av 26
1.1
1.3
1.4
1.2
0
1
2
3
6
4
9
8
10
5
7
3.2.1 Wheelbase complete Hepro Work chair G - Gasso
Pos.
Description
No.
Hepro
Item no
-
Wheel base 2004, compl. w/o lifting unit and footring
1
31153
0
Wheel base 2004
1
31152
1
Lifting unit G150 2004
1
31302
1.1
Gas spring 150 300N
1
30500
1.2
Marking disc, blue 300N
1
30570
1.3
Central unit G150 2004
1
31301
1.4
Lock ring for gas spring
1
70237
1.5
Lifting unit G150 2004 w/locked rotation in gas spring
1
31547
1.5.1
Conus tube
1
31545
1.5.2
Gas spring RH 4F , locked rotation
1
31495
2
Caster, plastic, w/o brake, wheel Ø100
2
31170
3
Caster, plastic, w/brake, wheel Ø100
2
31171
4
Brake bail complete
1
31548
4.1
Brake bail, pair
1
31154
4.2
Bushing for brake lever
1
30548
4.3
Screw M5x50 w/cross mark
1
70130
4.4
Lock nut Nylock M5
1
70058
4E
Eccentric arm
1
80251
5
Brake lever, complete
1
30546
6
Unbraco screw, UBL M6x10
2
70145
7
Hold for footring, w/bushing and srew
2
30878
8
Footring 2004, ¼ footring
1
30877
9
Unbraco screw, UBL M8x16
2
70154
10
Hold bolt, complete
1
31549
10.1
Lock handle APB79M8
1
80244
10.2
Screw 6-eck. M8x70
1
70090
10.3
Washer M8
1
70025
1.5.2
1.5.1

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 18 av 26
3.2.2 Wheelbase complete Hepro Work chair E- Elektro
Pos.
Description
No
Hepro
Item no
-
Wheel base 2004, compl. w/o lifting unit and footring
1
31153
0
Wheel base 2004
1
31152
1
Lifting unit E 150 2004
1
31424
1.1
Actuator LA30.3L-150 Std. w/conus
1
61670
1.2
Central unit E150 2004
1
31423
2
Lifting unit E150 Tilto 2004
1
31685
2.1
Actuator LA30.3L-150 Tilto w/conus
1
61789
2.2
Central unit 150 2004
1
31423
C
Locking disc M8 Nord-Lock
2
70003
D
Hex.screw M8 x 35, fully thread
1
70100
E
Hex.srew M10 x 16
1
70097
F
Washer 10,5 x 40 x 2
2(3)
70250
G
Washer 27x50x4
2
70249
2-10
See Sect. 3.2.1.
-
-
12
El.control box CB8001A40-00
1
61681
12.1
El.control box wo/batteries CB08-1A-40-24
1
61680
12.2
Batteries FG 20271, 2 pcs. 12V/2,7Ah
1
60022
Charger, Fladd CH08 220V
1
60504
13
Switch box compl. w/cable L120
1
31379
14
Bracket for El.box, 2004
1
31407
15
Screw self thread, ELM 6x20 Torx
2
70224
E
F
G
1.1
1.2
C
D
1
13
14
12
15
F
C
E
2.1
2.
2
D

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 19 av 26
3.2.3 Wheelbase complete Hepro Work chair E1 Kilo
Pos.
Description
No.
Hepro
Item no
-
Wheel base for E1 Kilo (wo/lifting unit and footring)
1
31049
1
Wheel base for E1 Kilo
1
31047
2
Caster steel wo/brake, wheel Ø125
2
31160
3
Caster steel w/brake, wheel Ø125
2
31161
4
Ferrule A/PVC 32 x 45 mm
2
80182
5
Hex.rod for brake, Kilo
1
30540
6
Adapter for brake
1
30541
6.1
Thread pin UBL M8 x 10 mm
1
70200
7
Unbraco screw, UBL M8 x 10 mm
2
70139
8
Brake lever, compl.
1
30551
9
Footring Kilo, ¼ footring compl.
1
31397
10
Lifting column LP2-2.1-100
1
61705
11
Switch box compl. w/cable
1
31379
12
El.control box w/batteries
1
61681
12.1
El.control box wo/batteries CB08-1A-40-24
1
61680
12.2
Batteries FG 20271, 2 pcs. 12V/2,7Ah
1
60022
12.3
Charger, Fladd CH08 220V
1
60504
13.1
Unbraco screw, ELZ M10 x 30
4
70170
13.2
Hex.nut ELZ M10 Special
4
70044
15
Brake lock
2
30545
1
2
3
4
5
6
7
8
9
10
11
12
13.1 +13.2
15

SERVICE MANUAL for
Work Chairs, Coxit-chairs and
Standing support chairs
Work Chairs, Coxit-chairs and Standing support chairs
Edition: 03
Page 20 av 26
3.2.4 Wheelbase complete Hepro Standing Support Chair, S2 w/central brake
Pos.
Description
No.
Hepro
Item no
-
Wheel base S 2, compl. wo/lifting unit
1
31684
0
Wheel base 2004
1
31152
1
Gas spring RH 4C, locked rotation, 19 cm
1
31493
2
Caster plastic wo/break, wheel Ø100
2
31170
3
Caster plastic w/break, wheel Ø100
2
31171
4
Break bail, complete
1
31548
5
Break lever w/ball, Stando
1
31574
6
Unbraco screw, UBL M6x10
2
70145
7
Unbraco screw, UBL M6x16
2
70154
8
Hold bolt complete
1
31549
10
Conus tube
1
31545
9
0
1
5
2
6
3
4
8
7
9