AAT S-Max SELLA D1353 User manual

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EN2018-03 (1.1)
Translation of the original user manual

2
Spare parts
Repairs processing
Technical advice
Product seminars
Show room & exhibition devices
Re-use
Complaints
Loaner devices
With our professional service concept
AAT proves once again its superior
quality standards and offers its clients an
all-inclusive package.
We are there for you!
AAT service concept
Customer service at its best
AAT Alber Antriebstechnik GmbH
Ehestetter Weg 11 · D-72458 Albstadt
Phone: [phone]
Fax: [phone]
[email protected] · www.aat-online.de
Assembly Team
Phone [phone]
Phone [phone]
Fax [phone]
Email [email protected]
New devices
Phone [phone]
Phone [phone]
Fax [phone]
Email [email protected]
Head offi ce
Phone [phone]
Email [email protected]
Web www.aat-online.de
Service and repairs
Phone [phone]
Phone [phone]
Fax [phone]
Email [email protected]

3
CE declaration of conformity
The company AAT Alber Antriebstechnik GmbH hereby declares that the s-max sella complies with the
relevant provisions of EC Directive 2006/42/EC, 2007/47/EC and 93/42/EC. If any alteration is made to
s-max sella without the prior agreement of AAT Alber Antriebstechnik GmbH, this declaration shall no
longer be valid. This statement is valid only for the products with the following article numbers: 300696
and 300693.
The products are marked with in accordance with the legal guidelines.
The technical documentation is stored for inspection by the responsible authority for at least  ve years
at the above address. A system for market observation is implemented.
Manufacturer’s signature:
Martin Kober
(Managing Director)
.
WARNING
Failure to observe this user manual, in particular the safety instructions, can lead to defects in the
s-max sella and endanger the operator, the occupant or persons in the device’s immediate vicinity
!There is an increased risk of injury! In the event of an infringement, claims for warranty and liability are
excluded!
The product is state of the art and complies with the associated technical safety requirements.
Nevertheless, a low level of residual risks cannot be ruled out. Please observe the safety instructions
to this end.
People with visual and reading impairments or intellectual disabilities should print out the user manual
available on the website in enlarged letters or have this manual read to them, if necessary. You will also
 nd all safety-relevant changes that have been made to the user manual on our homepage. All versions
with details of the production period of the product are obtainable at:
www.aat-online.de/de/bda/s-max-sella

4
Inhaltsverzeichnis
1 Symbols and safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2 Explanation of the symbols on the packaging . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3 Explanation of the symbols on the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.1 Device overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.2 Indication and intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Contraindication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.4 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.5 Dimensional drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.6 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.7 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1 Seat/handle unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.2 Battery pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3 Using armrests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
5.4 Assemble the head rest (optional accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
6 Folding and unfolding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.1 Unfolding the seat/handle unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.2 Folding up the seat/handle unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.1 Adjusting the handles to the correct height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.2 Turning on the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.3 Neutral position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.4 Checking the safety brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.5 Single step mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.6 ComfortStep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.7 Check capacity of the batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.1 Position of the occupant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.2 Drive on level ground / overcoming obstacles . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
8.3 Tilting the stair climbing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.4 Operation on a slope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
8.5 Climbing - upstairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
8.6 Climbing - downstairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.7 Laying the device down on the stairs / emergency stop function . . . . . . . . . . . . . . . . . . 27
8.8 Parking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
8.9 Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9 Care and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9.1 Battery pack and charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9.2 Check the lining of the brakes and the climbing feet . . . . . . . . . . . . . . . . . . . . . . . . 31
9.3 Cleaning and disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9.4 Replacing fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9.5 Safety check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
9.6 Re-use (change of operator). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
9.7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.8 Long-term storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
10 Malfunction and trouble shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
11 Warranty and liability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
12 Corrective actions / product recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

5
1 Symbols and safety instructions
DANGER – Immediately imminent DANGER
If not avoided, this will result in death or severe physical injuries!
WARNING – Possible imminent DANGER
If not avoided, this may result in death or severe physical injuries!
CAUTION – Possible imminent danger or harmful situation
If not avoided, this may result in minor bodily injuries or damage to property!
iNOTE – Manufacturer’s information
General safety instructions
iNOTE
In the event of visual disability, this user manual can be downloaded at:
www.aat-online.de/de/bda/s-max-sella
Read the user manual prior to start-up and observe the warning notices and safety instructions.
In the event of reading difculties, training contents must be broadened verbally.
The user manual must be kept in a safe place after reading.
Contains some ammable materials. Keep the device away from sources of ignition.
s-max sella can interfere with highly sensitive electromagnetic elds of other electronic devices
(e.g. anti-theft devices).
Stability tests were performed under laboratory conditions. s-max sella can behave differently under
real conditions compared to laboratory tests.
Training may only be carried out by the manufacturer, the AAT eld staff or the qualied specialist shop.
CAUTION
External heat sources may cause the surface temperature to rise (e.g. sunlight)!
In such case, surfaces may inict burns - do not touch!

6
Symbol Explanation
Handle with care
The packaging including the product must be handled with special care.
Protect from moisture
Protect the packaging including the product from excessively high air humidity.
Cover during storage. Carefully cover with a tarpaulin, if necessary.
Caution fragile
Handle the packaging including the product carefully and never allow it to fall.
This way up
The packaging must be stored and transported in such a way that the arrows
point upwards at all times. Any failure to comply with this rule, such as rolling
or tilting the package, must be avoided.
2 Explanation of the symbols on the packaging
WARNING
To avoid being crushed, never reach into rotating/moving parts!
DANGER
s-max sella must not be operated in the case of severe visual impairment and/or blindness!
Do not exceed the total permissible weight and the maximum person weight, as this may lead to
defects or an overloading of the s-max sella!
Do not use in rain, wet, snow or ice as the restricted braking capacity may cause slipping!
Do not use on travellators or escalators as doing so may risk physical injury and/or material damage
as a result of crashing or the occupant falling out of the seat!
The operational capability of s-max sella can be inuenced by electromagnetic elds
((e.g. by mobile phones, electric generators or high-voltage sources)!
Do not store near medical devices, for example with a life support function, and diagnostic devices,
as these may malfunction!

7
3 Explanation of the symbols on the device
Symbol Explanation
CE mark
The product complies with the relevant provisions of EC Directives 2006/42/EC,
2007/47/EC und 93/42/EC
SN SN
Product serial number e. g. D1353XXXXXX / D1603XXXXXX
www.aat-online.de
Note on the user manual
The user manual must be observed
24 V -
Electrical voltage / V = Volt
Inspection plate for technical safety testing (see Chapter 8.6)
Provides information on the due date of the next technical safety test

8
4 Product description
4.1 Device overview

9
Control unit
Handle, adjustable
Main wheel
Armrests (can be folded away)
Climbers and climbing feet
Safety brake
Battery display
Single step switch
ComfortStep
Battery pack and battery latch
Type label with serial number
Foot support(height-adjustable)
Fixing knob for transverse adjustment
Fixing knob for height adjustment
Speed control
Safety chip
ON/OFF switch
UP/DOWN switch
Seat/handle unit
Charging socket with locking  ap
Standpipe
Fixing knob for standpipe
Release button and lever (for folding in the seat/handle unit)
Steering rollers
LED lighting for illuminating the stairs - underside of climbing unit (no  gure)
i
Manufacturer information:
For a simpli ed assignment of
the individual components, the
numbers listed here are cited in
full for the  rst time in the following
chapters.

10
4.2 Indication and intended use
With the stair climber s-max sella you can transport one person with limited mobility safely and
effortlessly up and down stairs. You can conquer nearly all kinds of stairs and spiral stairs, whether they
are inside or outside. Driving on slopes is also possible.
The stair climber is developed to be operated by one person. This person must be trained and physically
and mentally capable of safely operating the s-max sella! They must have sufcient vision capability! Minors
below the age of 16 are not allowed to operate the s-max sella! Minors of at least 16 years are allowed
to operate the s-max sella, but only under supervision. Please bear in mind that the use of a stair climber
can entail a greater degree of risk and requires more skills than those required to operate a wheelchair.
The life expectancy of the s-max sella depends on the intensity of the application and is approx. 5
years under normal use. This statement implies compliance with all prescribed maintenance and
service specications. The life expectancy can also be exceeded with careful handling. However, this
life expectancy can also be shortened due to overuse and improper handling.
This user manual is an all-purpose manual for the devices D1353 and D1603. The stair climbers only
differ in the technical data. You can see which version you have by checking the serial number. All
chapters listed apply to both versions of the s-max sella.
4.3 Contraindication
The s-max sella may not be used if:
• the operator has not received training/instruction for the product!
• the operator is younger than 16 years old!
• the operator is a minor of at least 16 years, but there is no supervision!
• the operator is physically and mentally unable to safely use the s-max sella!
• more than one person needs to be transported at the same time!
• the person to be transported cannot sit independently!
• the operator does not have sufcient visual capacity!
• the braking effect is impaired due to rain, wet conditions, snow or ice!
• the required braking effect (on one side or both sides) is not guaranteed!
• escalators or travellators must be negotiated!
• medical devices, for example with a life support function, and diagnostic devices, are nearby!
• the intended use is contradicted!

11
4.4 Technical data
WARNING - The approved total weight may not be exceeded because it can lead to malfunction
or cause an overload of the s-max sella!
iNOTE - Observe the technical data.
Technology s-max sella D1353 s-max sella D1603
Measurements
Height = min. 1150 mm - max. 1550
mm Width: Handle = 495 mm, Climbing
unit = 320 mm, Total = 520 mm, Depth:
Handle = 212 mm, Total = 890 mm
Height = min. 1150 mm - max. 1550
mm Width: Handle = 495 mm, Climbing
unit = 338 mm, Total = 520 mm, Depth:
Handle = 212 mm, Total = 890 mm
Weight
Climbing unit = 15.8 kg
Handles/seating unit = 14.8 kg
Battery pack = 3.0 kg, Charger = 0.2 kg
Both arm rests = 1.2 kg
Total weight = 35.0 kg
Climbing unit = 16.9 kg
Handles/seating unit = 14.8 kg
Battery pack = 3.0 kg, Charger = 0.2
kg
Both arm rests = 1.2 kg
Total weight = 36.1 kg
Total weight approved 170 kg 195 kg
Max. weight of the person 135 kg 160 kg
Climbing speed, steps / min. 1) 5 - 20, continuously adjustable 8 - 23, continuously adjustable
Range with one charge of the batteries approx. 26 oors (approx. 390 steps) approx. 20 oors (approx. 300 steps)
Range with one charge of the batteries approx. 11 oors (approx. 165 steps) approx. 9 oors (approx. 135 steps)
Maximum height of step 220 I 235 mm (extended climbing height)
Minimum height of step2) 140 mm
Necessary step width 596 mm (straight stairs)
Minimum platform size 1350 x 1350 mm (U-shaped stairs)
Minimum radius of spiral staircases 1350 mm
Maximum gradient of the stairs 60.3°
Batteries 2 x 12 V / 5 Ah (gas-proof)
Direct current motor 24 V / 275 W
Operating force UP/DOWN switch 3-8 N
Direct operating force max. 350 N whilst climbing upstairs / downwards (Chapter 7.6)
Noise information < 70 dB
Storing/operating temperature: device 0° C up to +60° C / -30° C up to +50° C
Storing/operating temperature:
batteries 0° C up to +60° C / -30° C up to +50° C
Vibration information The weighted RMS value of acceleration the upper body is exposed to lies typically
below 2.5 m/s2.
Type label with serial number Left on the power unit and the rear side of the user manual
IP protection class IPX4 protection class: Protection against splash water from all sides
Classication according to
ISO 7176-28:2012 Type C (table 1 of annex A)
1) The climbing speed as well as the range with one charge of the batteries is reduced if the ComfortStep is activated. The range also depends on the weight
of the person seated.
2) Never use the stair climber to climb stairs with too little depth because it is no longer possible for the main wheels to touch the steps safely.
In the interest of progress we reserve the right for technical changes.

12
4.5 Dimensional drawing
f
n
b
a
d
e
g
max. 1498
min. 1130
h1
h2
o
Für diese technische Unterlage behalten wir uns alle Rechte nach DIN 34 vor.
Ers. für
>315-1000
>120-315
>30-120
>6-30
Zust.
>0,5-6
Name Änderung Datum
±0,8
±0,5
±0,3
±0,2
±0,1
bearb.
gepr.
Werkstoff
Datum Name
Toleranzen
Zeichnungsnummer
Baugruppe
Benennung
BL.
Oberfläche
Werkstück-
kanten DIN ISO 13715
-0,3
+0,3
Maßstab
Revision
Status
AAT Alber Antriebstechnik GmbH
Rauheit
Reihe 3
26.01.2018
Kramer
D1353
1:2
1/3
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
A0
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
135kg-Ufo-Motor
s-max sella kpl. 135kg
031942
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
943
c
i
338
Für diese technische Unterlage behalten wir uns alle Rechte nach DIN 34 vor.
Ers. für
>315-1000
>120-315
>30-120
>6-30
Zust.
>0,5-6
Name Änderung Datum
±0,8
±0,5
±0,3
±0,2
±0,1
bearb.
gepr.
Werkstoff
Datum Name
Toleranzen
Zeichnungsnummer
Baugruppe
Benennung
BL.
Oberfläche
Werkstück-
kanten DIN ISO 13715
-0,3
+0,3
Maßstab
Revision
Status
AAT Alber Antriebstechnik GmbH
Rauheit
Reihe 3
26.01.2018
Kramer
D1353
1:10
2/3
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
A0
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
135kg-Ufo-Motor
s-max sella kpl. 135kg
031942
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
m
k
l
Für diese technische Unterlage behalten wir uns alle Rechte nach DIN 34 vor.
Ers. für
>315-1000
>120-315
>30-120
>6-30
Zust.
>0,5-6
Name Änderung Datum
±0,8
±0,5
±0,3
±0,2
±0,1
bearb.
gepr.
Werkstoff
Datum Name
Toleranzen
Zeichnungsnummer
Baugruppe
Benennung
BL.
Oberfläche
Werkstück-
kanten DIN ISO 13715
-0,3
+0,3
Maßstab
Revision
Status
AAT Alber Antriebstechnik GmbH
Rauheit
Reihe 3
26.01.2018
Kramer
D1353
1:2
3/3
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
A0
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
135kg-Ufo-Motor
s-max sella kpl. 135kg
031942
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
m
k
l
Für diese technische Unterlage behalten wir uns alle Rechte nach DIN 34 vor.
Ers. für
>315-1000
>120-315
>30-120
>6-30
Zust.
>0,5-6
Name Änderung Datum
±0,8
±0,5
±0,3
±0,2
±0,1
bearb.
gepr.
Werkstoff
Datum Name
Toleranzen
Zeichnungsnummer
Baugruppe
Benennung
BL.
Oberfläche
Werkstück-
kanten DIN ISO 13715
-0,3
+0,3
Maßstab
Revision
Status
AAT Alber Antriebstechnik GmbH
Rauheit
Reihe 3
26.01.2018
Kramer
D1353
1:2
3/3
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
A0
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
135kg-Ufo-Motor
s-max sella kpl. 135kg
031942
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
Dimensions according to ISO 7176-15
a Angle of the seat 6°
b Effective seat depth 425 mm
c Effective seat width 350 mm
d Height of the seat, frontal edge 539 mm
e Angle of the back rest 10°
f Height of the back rest 625 mm
g Distance between foot rest and seat 420 mm
h1 Total length with foot rest min. 873 mm
h2 Total length with foot rest max. 936 mm
i Total width 519 mm
k Length, folded 378 mm
l Width, folded 519 mm
m Height, folded 1151 mm
n Angle from foot rest to seat 5°
o Distance between arm rest and seat 121 mm
Minimum turning radius approx. 950 mm

13
4.6 Scope of delivery
Charger incl. user manual
Battery pack with charging electronics and safety latch
Seat/handle unit
Climbing unit
4.7 Accessories
+ 15 mm
Head rest
Charging cable for your vehicle
Arm rests extended
Harness belt including lap belt
Lap belt
Climbing height extension
Inclination indicator
HINWEIS - Only use AAT Alber Antriebstechnik GmbH accessories.
i

14
5 Assembly
5.1 Seat/handle unit
WARNING - The seat/handle unit must be securely xed with the locking screw so it is safely
connected to the climbing unit!
WARNING - the climbing unit attachment may only be set by the manufacturer, the AAT eld
team or authorised specialist dealers!
i
A 9-pin sub-D coupling in the attachment establishes the electrical connection.
Connect the seat/climbing unit
and climbing unit.
» The attachment must
be aligned parallel to the
housing.
Secure connection with the
standpipe xing knob.
Both units must be connected
safely.
Put the seat/handle unit on
the climbing unit attachment.
» The seat must be aligned
forwards.
5.2 Battery pack
WARNING - The battery pack has to be locked safely, otherwise it may move involuntarily!
Assembly. Insert thebattery
pack into the opening
provided for this purpose in
the climbing unit.
» The battery latch locks
automatically.
Disassembly. Loosen latch.
» Press down the release
button on the climbing unit,
then remove the battery
pack.

15
5.3 Using armrests
Use the arm rests on both
sides. The locking bolts must
be fully immersed in the hinge
groove.
5.4 Assemble the head rest (optional accessory)
CAUTION - To ensure head stability, we recommend placing the head rest at the back of the
occupant‘s head!
CAUTION - To avoid injury, beware of pinch points at the groove opening!
Set the handle unit at the
right height beforehand (see
chapter 7.1).
Detach the head support
 xing knob.
Insert the ‘slot stone’ into the
standpipe groove opening at
an angle.
Strap head support onto
standpipe.
Adjust height of the head
rest to the head height of the
occupant.
Important information for using the arm rests
The armrests are used as side con nements and may be used as
an arm support by the occupant.
» They must not be loaded with more than 90 kg per side!
» Do not load the armrests on one side (risk of tipping)!
» Never sit on the armrests!
» Do not fasten objects on the armrests (e.g. bags)!
» Check the armrests are  tted correctly before use!
» The occupant’s arms may not protrude above the armrests!
» Do not remove the armrests before climbing the stairs!
Secure with the locking screw.
i

16
6 Folding and unfolding
DANGER - Lock the seat/handle unit, otherwise parts may move involuntarily!
WARNING - Watch out for pinch points while folding or unfolding!
Pull the seat cushion against
the backrest cushion.
» Pull the release button
upwards at the same
time.
Fold the seat unit downwards
until it audibly clicks into
place.
6.2 Folding up the seat/handle unit
6.1 Unfolding the seat/handle unit
Press therelease lever
towards the backrest
cushion and fold the seat unit
upwards.
Press the seat cushion
against the backrest cushion
until it audibly clicks into
place.
iBefore folding up, remove the armrests and fold in the footrest.
Fold out the foot rest .
» Loosen the locking screw
if required and adjust the
footrest height.

17
7.1 Adjusting the handles to the correct height
iNOTE - Store s-max sella in a frost-free environment at least one hour prior to start-up to
avoid malfunctions.
iNOTE - Wait a few seconds after turning on before pressing the UP/DOWN switch!
7 Start-up
WARNING - Always securely x the handle with a locking screw so the handle
setting does not change unexpectedly!
CAUTION - To avoid injury, beware of pinch points at the groove opening!
Turn the height adjustment
locking screw counter
clockwise and pull out the
handle at shoulder height.
Tighten the locking screw
clockwise.
Turn the transverse
adjustment locking screw
anti-clockwise.
Move handle in the desired
direction.
Tighten locking screw
clockwise.
The handle may hit the wall if the stairwells or spiral staircases are narrow. In these cases, adjust the
handle in a transverse direction.
Transverse adjustment handle

18
7.3 Neutral position
Bring climber into the
neutral position by pressing
the UP/DOWN switch .
» If single step mode (see
chapter 7.5) is activated,
theclimber will stop
automatically in the neutral
position!
Correct. Wrong!
Insert safety chip for the
engine immobiliser.
» Safety chip must latch!
Turn on s-max sella by
pressing the ON/OFF
switch .
7.2 Turning on the device

19
7.4 Checking the safety brakes
DANGER - Do not use the s-max sella if the required braking effect (on one side or both sides)
is not guaranteed because a reduced braking effect can lead to falling down the stairs. Contact
the manufacturer or your authorised dealer!
WARNING - Check safety brakes without an occupant!
There are safety brakes
located on both sides of the
climbing unit . Activate
them for checking the effect.
» Check the safety brakes
before each use.
Pull in the climbers to their
upmost position and tilt s-max
sella backwards.
Test: s-max sella cannot
be pushed forward, only
backwards = safety brakes
activated.
i
Manufacturer’s
recommendation:
Put your foot on the
housing and tilt the s-max
sella towards you. See
detailed description in
Chapter 8.3.
Single step mode
Activate / deactivate.
LED glows = single step
mode is activated!
Should you choose to
turn off the single step
mode you can do so by
pressing the appropriate
button.
» LED does not glow = single
step mode is deactivated!
i
Manufacturer’s
recommendation:
Only deactivate the
single step mode,
if the operator is able
to use the s-max sella
safely.
DANGER - If the single step mode is deactivated, make sure to operate
the s-max sella correctly and safely! Otherwise it can lead to falling down the stairs!
7.5 Single step mode

20
7.6 ComfortStep
Activate / deactivate.
» LED glows = ComfortStep
is activated!
» It ensures a pleasant
and comfortable climbing
process.
Should you choose to turn
off the ComfortStep you
can do so by pressing the
appropriate button.
» LED does not glow =
ComfortStep is deactivated!
Manufacturer’s
information:
Every time you turn
on the device, the last
used setting will be
reproduced.
i
iNOTE - If an adjustment of the height of the step is required, please contact
the AAT  eld staff or your authorised dealer!
7.7 Check capacity of the batteries
Battery display
Green = battery full
Battery display
Yellow = battery low
» Charge battery!
Red = battery empty
» Charge battery!
» Audio warning every 12
sec.!
» The capacity of the batteries
is suf cient for max. 20 - 35
steps!