AAT CR2303 User manual

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EN2019-01 (5.1)
Translation of the original user manual
picture shows accessory
'seat belt system including a hip belt‘

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 o󰀨 ers 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]
E-Mail [email protected]
New devices
Phone [phone]
Phone [phone]
Fax [phone]
E-Mail [email protected]
Head offi ce
Phone [phone]
E-Mail [email protected]
Web www.aat-online.de
Service and repairs
Phone [phone]
Phone [phone]
Fax [phone]
E-Mail [email protected]

3
CE declaration of conformity
The company AAT Alber Antriebstechnik GmbH hereby declares that CR2303 complies with the
relevant provisions of EC Directive 2006/42/EC, 2007/47/EC and 93/42/EC. If any alteration is made
to CR2303 without the prior agreement of AAT Alber Antriebstechnik GmbH, this declaration shall no
longer be valid.
Manufacturer’s signature:
Martin Kober
(Managing director)
The stair climber CR2303 has been successfully tested by TÜV Süd Product Service GmbH in Hanover
according to ISO 7176-28.
The product is state of the art and complies with the associated technical safety requirements.
Nevertheless, a low level of residual risk cannot be ruled out. Please observe the safety instructions to
this end.
WARNING
Failure to observe this user manual, in particular the safety instructions, can lead to defects in the CR2303,
endanger the operator and the occupant and impair function! There is an increased risk of injury! In the
event of an infringement, claims for warranty and liability are excluded!
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 available at:
www.aat-online.de/gb/um/CR2303

4
Table of contents
1 Symbols and safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2 Explanation of the symbols on the package . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3 Explanation of the symbols on the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
4 Description of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .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 sketch CR2303/CR2313 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.6 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.7 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Folding and unfolding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1 Seat unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
5.2 Assemble the head rest (optional accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
5.3 Pull out the telescopic frame (optional accessory). . . . . . . . . . . . . . . . . . . . . . . . . .15
6 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.1 Adjust the handles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
6.2 Attach the battery pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.3 Turning on the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.4 Neutral position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.5 Checking the safety brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.6 Single step mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.7 ComfortStep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.8 Check capacity of the batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.1 Position of the occupant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2 Drive on level ground / overcoming obstacles . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7.3 Tilting the stair climbing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.4 Operation on a slope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
7.5 Climbing - upstairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
7.6 Climbing - downstairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.7 Laying the device down on the stairs / emergency stop function . . . . . . . . . . . . . . . . . . 26
7.8 Parking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
7.9 Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8 Care and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.1 Battery pack and charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.2 Check the lining of the brakes, climbing feet and gilding strips . . . . . . . . . . . . . . . . . . . 30
8.3 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.4 Replacing fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.5 Safety check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
8.6 Re-use (Change of the operator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.7 Recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.8 Long-term storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9 Malfunction and trouble shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
10 Warranty and liability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
11 Corrective actions / product recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

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 debility of sight, this user manual can be downloaded at:
www.aat-online.de/gb/um/CR2303
Read the user manual prior to start-up and observe the warning notices and safety instructions.
In the event of reading di󰀩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 CR2303 away from sources of ignition.
CR2303 can interfere with highly sensitive electromagnetic elds of other electronic devices
(e.g. anti-theft devices).
Stability tests were performed under laboratory conditions. CR2303 can behave di󰀨erently under
real conditions compared to laboratory tests.
Training courses may only be done by the manufacturer or authorized personnel.
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 package
WARNING
Never touch rotating or moving parts to avoid crushing of ngers and hands!
DANGER
CR2303 must not be operated in the case of severe visual impairment and/or blindness!
Do not exceed the approved total weight and the maximum person weight, as this may lead to
defects or overloading of the CR2303!
Do not use in rain, wet, snow or ice as the restricted braking capacity may cause slipping!
Do not use on travelators 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 CR2303 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 and 93/42/EC
SN
SN
Serial number of the product e. g. CR2303XXXXXX / CR2313XXXXXX
www.aat-online.de
Note on the user manual
The user manual must be observed!
24 V - Electrical voltage / V = Volt
Inspection plate for safety-engineering check (see Chapter 8.5)
Provides information on the due date of the next safety-engineering check:

8
4 Description of the product
4.1 Device overview
9
Control unit
Handle, adjustable
Main wheel
Lever with chain drive
Climbers and climbing feet
Safety brake
Battery display
Single step switch
ComfortStep
Battery pack
Safety interlock of the battery pack (release button)
LED to display the error codes
Helix cable
Tightening screw for the handle

9
Speed control
Safety chip
ON/OFF switch
UP/DOWN switch
Back rest
LED for safe operation in lowlight situations
C-part (with seat unit)
Foot rest with feet belt
Release button for the C-part with seat unit
Steering rollers
Hip belt
Type label with serial number
i
Manufacturer‘s 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 CR2303 you can transport one person with limited mobility safely and
e󰀨ortlessly 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 just one person. This person must be
trained and physically and mentally capable of safely operating the CR2303. A su󰀩cient vision
must imperatively be present. Minors below the age of 16 are not allowed to operate the CR2303!
Minors of at least 16 years are allowed to operate the CR2303, 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 CR2303 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 CR2303 and CR2313. The only di󰀨erence
between the stair climbers is a di󰀨erence in the maximum height of step. You can see which version
you have by checking the serial number. The CR2303‘s maximum step height is 210 mm. The extended
version CR2313 can overcome 225 mm (see chapter 4.4 - max. height of step). All chapters of this user
manual are valid for the types CR2303 and CR2313.
4.3 Contraindication
The CR2303 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 CR2303!
• 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 su󰀩cient visual capacity!
• the braking e󰀨ect is impaired due to rain, wet conditions, snow or ice!
• the required braking e󰀨ect (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!
• objects are to be transported!

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 CR2303!
iNOTE - Observe the technical data.
Technology CR2303 / CR2313
Measurements Height = min. 1287 mm - max. 1631 mm, Width = 446 mm
Depth with the foot rest folded out = 1095 mm
Weight Climbing unit = 33.5 kg, Battery pack = 4.2 kg
Total weight without arm rests = 37.7 kg
Total weight approved 268 kg
Max. weight of the person 230 kg
Climbing speed1) 7 - 19 steps / minute, continually adjustable
Range with one charge of the batteries1) approx. 300 steps
Maximum height of step 210 | 225 mm (extended climbing height)
Minimum height of step2) 140 mm
Necessary step width (straight stairs) 596 mm
Minimum platform size (U-shaped stairs) 1350 x 1350 mm
Minimum radius of spiral staircases 1350 mm
Maximum gradient of the stairs 60.3°
Tilt stability In driving direction 3.7° / against driving direction 2.7 °
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 / downstairs (chapter 7.6)
Noise level < 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 serial number Left on the power unit and the rear side of the user manual
IP-Protection class PX4 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.
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 sketch CR2303/CR2313
f
n
g
d
max. 1631
min. 1287
a
e
b
h2
h1
Maße nach ISO 7176-15
a Winkel der Sitzfläche 9°
b effektive Sitztiefe 398mm
c effektive Sitzbreite 340mm
d Höhe der Sitzfläche an der vorderen Kante 520mm
e Rückenlehnenwinkel 19°
f Rückenlehnenhöhe 615mm
g Abstand der Fußstütze zur Sitzfläche 436mm
h1 Gesamtlänge m. Fußstütze min. 1095mm
h2 Gesamtlänge m. Fußstütze max. 1212mm
i Gesamtbreite 496mm
k Länge zusammengeklappt 451mm
l Breite zusammengeklappt 496mm
m Höhe zusammengeklappt 1335mm
n Winkel Fußstütze zu Sitzfläche 6°
minimaler Wenderadius ca. 1150mm
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
16.12.2016
Kramer
CR2303
1:2
1/1
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 Reha 230Kg
CR2303
039086
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
446
c
i
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
16.12.2016
Kramer
CR2303
1:5
1/2
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
c-max U2 Reha 230Kg
CR2303
039086
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
k
m
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
16.12.2016
Kramer
CR2303
1:5
2/2
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 Reha 230Kg
CR2303
039086
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
k
m
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
16.12.2016
Kramer
CR2303
1:5
2/2
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 Reha 230Kg
CR2303
039086
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
Dimensions according to ISO 7176-15
a Angle of the seat 9°
bE󰀨ective seat depth 398 mm
cE󰀨ective seat width 340 mm
d Height of the seat, frontal edge 520 mm
e Angle of the back rest 19°
f Height of the back rest 615 mm
gDistance between foot rest
and seat 436 mm
h1 Total length with foot rest min. 1095 mm
h2 Total length with foot rest max. 1212 mm
i Total width 496 mm
k Length, folded 451 mm
l Width, folded 496 mm
m Height, folded 1335 mm
nAngle from food rest to seat 6°
Min. turning radius approx.
1150 mm

13
4.6 Scope of delivery
Charger incl. user manual and splash protection
Battery pack with charging electronics and safety interlock
CR2303/CR2313, incl. hip belt
4.7 Accessories
Head rest, adjustable in height and depth
Charging cable for your vehicle
Widening of the seat
Arm rests (adjustable in width)
Seat belt system, incl. hip belt
NOTE – Only use AAT Alber Antriebstechnik GmbH accessories.
ii

14
5 Folding and unfolding
5.1 Seat unit
DANGER - Lock the seat unit safely, otherwise parts may move involuntarily!
WARNING - Special care must be taken to avoid crushing or pinching of body parts while
folding or unfolding!
First, unlock the folding
mechanism.
» Push down the release
knob and simultaneously
pull down the C-part .
Fold out the foot rest .
Push down the C-part until
the mechanism is entirely
unfolded.
» The steering rollers
have to touch the oor.
Folding up.
To fold up the CR2303, rst, ip up the foot rest.
Then fold the C-part with seat unit upwards until the folding mechanism locks automatically.
5.2 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.
Place the bracket of the head
rest above the marks.
» Mount the head rest on the
back rest using the screws.
Adjust the height of the
head rest to the head of the
occupant.
» Secure with the locking
screw.

15
6 Start-up
iNOTE - Store CR2303 in a frost-free environment at least one hour prior to start-up to avoid
malfunctions.
iNOTE - Wait a few seconds after turning on the CR2303 before you press the UP/DOWN
switch.
5.3 Pull out the telescopic frame (optional accessory)
WARNING - Do not use the telescopic frame as a carrying handle, as it is not designed for
carrying!
CAUTION - Special care must be taken at the pinch point whilst pulling the telescopic
frame in or out!
The stair climber is designed for operation by just one person. This person must be physically and
mentally capable of safely operating the CR2303. Minors of at least 16 years may only operate the
CR2303 under the constant supervision and instruction of an adult.
Push out the telescopic frame.
»It is secured by means of
the locking bolt.
Push in the telescopic frame.
The telescopic frame can
simly be inserted again, if it is
not needed.
The telescopic frame provides an accompanying person the
opportunity to attend the climbing process of the CR2303.
In case the telescopic frame was not included when the new
stair climber was ordered, there is a shaft for the foot rest
instead of the telecoping frame.
i

16
6.1 Adjust the handles
WARNING – Always tighten the locking screws, as otherwise parts can suddenly become loose!
CAUTION - To avoid injury, beware of pinch points at the notch opening!
Release the locking screws
of the handles counter
clockwise.
Adjust the height of the
handles approx. to the
level of the operator‘s shoulder.
Tighten the locking screws.
6.2 Insert the battery pack
WARNING - The battery pack has to be locked safely, otherwise it may move involuntarily!
Attach the battery pack.
Push the battery pack into
its xture by means of the
guiding pins on the top of the
housing.
» This locks the release button
automatically.
Detach.
Unlock the battery pack
by pressing the release
button on top of the battery
pack until it engages.

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6.3 Turning on the device
Insert safety chip for the
engine immobiliser.
» Safety chip must latch!
Turn on the CR2303
by pressing the ON/OFF
switch .
6.4 Neutral position
Bring climbers into the
neutral position by pressing
the UP/DOWN switch.
»If single step mode
(see chapter 6.6) is
activated, climbers will stop
automatically in the neutral
position.
Wrong.

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6.5 Checking the safety brakes
DANGER - Do not use the CR2303, if the required braking e󰀨 ect (on one side or both sides) is
not guaranteed because a reduced braking e󰀨 ect can lead to falling down the stairs! Contact
the manufacturer or your authorized dealer!
WARNING - Check safety brakes without an occupant!
There are safety brakes
located on the climbing frame
on both sides. Activate them
for checking the braking
e󰀨 ect.
»Check the safety brakes
each time before using the
CR2303.
Pull in the climbers to their
upmost position and tilt the
CR2303 backwards.
Test: CR2303 cannot be
pushed forward, only
backwards = safety brakes
activated!
6.6 Single step mode
Single step mode
Activate / deactivate
LED glows = single step
mode is activated!
Should you choose to turn
o󰀨 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 CR2303 safely.
DANGER - If the single step mode is deactivated, make sure to operate the CR2303 correctly
and safely! Otherwise it can lead to falling down the stairs!
i
Manufacturer‘s
recommendation
Put your foot on the
housing and tilt the
CR2303 slightly towards
you until you feel that it
is balanced. See detailed
description in chapter 7.3

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6.7 ComfortStep
Activate / deactivate
»LED glows = ComfortStep
is activated!
»It ensures a pleasant and
comfortable climbing process.
Should you choose to turn o󰀨
the ComfortStep, you can do
so by pressing the appropriate
button.
» LED does not glow =
ComfortStep is deactivated!
Manufacturer‘s
information
Due to the memory function
the last setting is stored.
Everytime you turn on the
CR2303, the last used
setting will be reproduced.
i
iNOTE - If an adjustment of the height of the step is necessary, please contact the manufacturer
or your authorized dealer!
6.8 Check capacity of the batteries
Battery display
Green = Battery full
Battery display
Yellow = Battery low
» Charge batteries!
Battery display
Red = Battery empty
» Charge batteries!
»Audio warning every 12 sec.!
»The capacity of the
batteries is sufficient for
max. 20-35 steps!

20
7 Operation
DANGER - Operation by just one person. This person must be physically and mentally
able to safely operate the CR2303. Using the telescopic frame (optional accessory) a second
person is able to attend the climbing process in order to safeguard the operation!
DANGER - Other persons (except the potential second person using the telescopic frame for
safeguarding) are not allowed to be in the danger area underneath the CR2303!
DANGER - Check the safety brakes each time before using the CR2303 (see chapter 6.5)
WARNING - Wear non-slip footwear to avoid falling down the stairs!
WARNING - Always operate with both hands to avoid risky situations and to ensure a
safe climbing process!
WARNING - Do not use the CR2303 on wet, slippery or waxed stairs to avoid falling down
the stairs! Carpeted stairs must be non-slippery!
WARNING - The occupant’s arms should not dangle over the sides and may also not be
moved in an uncontrolled fashion! Put the occupant‘s arms on her or his thighs!
WARNING - Secure persons who cannot sit on their own with the hip belt as well as the foot
belt. This keeps the occupant from falling out of the CR2303.
iNOTE - Practice driving without an occupant and in single step mode.
iNOTE - Check the depth of the step as well as the condition of the stairs! Danger of Falling!
iNOTE - Wait a few seconds after turning on the CR2303 before pressing the UP/DOWN switch.
iNOTE - When using seat supports (cushions, etc.), ensure that the occupant is securely
seated to prevent the occupant from falling out or slipping!
7.1 Position of the occupant
Turn on the CR2303 by
pressing the ON/OFF switch.
Secure stand of the CR2303.
Press the UP/DOWN switch
direction U P.
» Climbers should touch the
oor.
Position of the occupant.
» Observe if the occupant is
sitting safely.
» Put the occupant‘s arms on
her or his thighs!