AAT CR2304 Installation and operating instructions

Ideen bewegen mehr
EN
Translation of the original user manual
www.aat-online.de/ambulance-transport
2021-11 (7.1)

2
Assembly Team
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we at AAT prove once again our high
claim of quality and o󰀨 er our clients an
all-inclusive package.
We are at your service!
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Service and repairs
Phone [phone]
Phone [phone]
Fax [phone]
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AAT Alber Antriebstechnik GmbH
Ehestetter Weg 11 · 72458 Albstadt · Germany
Phone: [phone]
Fax: [phone]
[email protected] · www.aat-online.de

3
The stair climber CR23 has been tested by TÜV Süd Product Service GmbH in Hanover/Germany ac-
cording to ISO 7176-28.
The product is state of the art and complies with the associated safety-related requirements. Never-
theless, a low level of residual risks cannot be ruled out. Please observe the safety instructions to this
end.
All serious incidents occurring in relation to the device must be reported to the manufacturer and to the
competent authority of the Member State where the user and/or occupant is established.
WARNING
Failure to observe this user manual, in particular the safety instructions, can lead to defects in the CR23
and endanger the operator and the occupant, as well as a󰀨 ect it in its proper function! There is an in-
creased 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. These
versions with indication are available at:
www.aat-online.de/gb/um/CR2304

4
Table of Contents
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.1 Device overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4.2 Type plate incl. serial number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.3 Intended purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.4 Intended patient population . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
4.5 Medical requirements and indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.6 Contraindications and restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.7 User group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.8 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.9 Dimensional drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.10 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.11 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5 Folding and unfolding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.1 Seating unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.2 Mounting the headrest (optional accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3 Pulling out the supporting handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 Starting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
6.1 Adjusting the handles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
6.2 Inserting the battery pack and making the spiral cable plug connection . . . . . . . . . . . . . . . . 19
6.3 Switching on the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
6.4 Neutral position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
6.5 Checking the safety brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.6 Single-step mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.7 ComfortStep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.8 Checking battery capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.1 Occupant taking a seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.2 Moving on level ground / overcoming obstacles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.3 Tilting the stair climbing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
7.4 Moving on slopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.5 Climbing stairs - Upwards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
7.6 Climbing stairs - Downwards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.7 Laying down on stairs / emergency stop function . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.8 Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
7.9 Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8 Care and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.1 Battery and charger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
8.2 Checking the brake linings, climbing feet linings and wheel slide protection . . . . . . . . . . . . . . 33
8.3 Cleaning and disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.4 Replacing fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
8.5 Technical safety test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.6 Reuse (change in operator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.8 Long-term storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
9 Fault conditions and troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

5
1 Symbols and safety instructions
DANGER - Imminent DANGER
If not avoided, this will result in death or severe bodily injuries!
WARNING - Possibly imminent DANGER
If not avoided, this may result in death or severe bodily injuries!
CAUTION - Possible imminent danger or harmful situation
If not avoided, this may result in minor bodily injuries or damage to property!
iNOTE - Information by the manufacturer
General safety instructions
iNOTE
If you have a visual disability, this user manual can be downloaded at:
www.aat-online.de/gb/um/CR2304
Read the user manual prior to start-up and observe the warning notices and safety instructions.
In the event of reading disabilities, cover training content in more depth verbally.
The user manual must be kept in a safe place after reading through it.
It does not consist exclusively of ame retardant substances. Keep the device away from sources of
ignition.
The CR23 may interfere with highly sensitive electromagnetic elds of other electronic devices
(e.g. anti-theft devices).
Stability tests were performed under laboratory conditions. CR23 may behave di󰀨erently under real
conditions compared to laboratory tests.
Training may only be carried out by the manufacturer, the AAT eld sta󰀨 or the qualied specialist shop.
CAUTION
External heat sources may cause the surface temperature to rise (e.g. sunlight)!
Do not touch the a󰀨ected surfaces in this case to avoid burns!
WARNING
Never reach into rotating/moving parts to avoid crushing.
10 Warranty and liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
11 Recalls and corrective actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

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 overly high air humidity.
Cover during storage. If necessary, cover thoroughly with tarpaulins.
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.
0°C
40°C Temperature limit 0 to 40 °C
Please do not store packaging incl. product and battery pack below/above the
specified temperature limits.
2 Explanation of the symbols on the packaging
DANGER
The CR23 must not be operated in the case of severe visual impairment and/or blindness!
Do not exceed the total permissible weight and the max. person weight, as this may lead to defects or
an overload the CR23!
Do not use in rain, wet conditions, snow or black ice to avoid slipping due to the reduced braking
e󰀨ect!
Do not use on escalators or travellators to avoid injuries from falling, the occupant tipping out and
damage to property!
The operability of the CR23 may be inuenced by electromagnetic elds (e.g. by mobile phones, elec-
tric 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 marking
Position: Type plate
The product complies with the relevant provisions of the EC Regulation
EC 2017/745 (MDR)
20XX
Date of manufacture
Position: Type plate
Indicates the year the medical device was manufactured.
Manufacturer
Position: Type plate
Shows the manufacturer of the medical device (AAT Alber Antriebstechnik
GmbH)
SN SN
Position: Type plate
Serial number of the product e.g. CR2304XXXXXX / CR2314XXXXXX
Medical Device
Position: Type plate
Observe the user manual!
Position: Type plate
The user manual must be observed! (www.aat-online.de)
Attention!
Position: Type plate
Refers to the need for the user to review the user manual and important
safety-related information.
Barcode
Position: Type plate
Contains the AAT serial number
Technical safety test badge
(refer to chapter Technical safety test)
Position: Drive unit, left side
Informs about the due date of the next technical safety test
TÜV Süd test mark
Position: Rear side of drive unit, above membrane keypad
Refers to the fact that the product has been successfully tested by TÜV Süd
Product Service GmbH according to the standards DIN EN 12182, DIN EN
12184 and the relevant parts of ISO 7176.

8
Adhesive label Notes
Position: Battery pack
Observe the user manual!
WARNING: rotating / moving parts!
Operation only by one trained person!
Activate the safety brakes on the stairs and check them before each use.
Observe the max. load!
Adhesive label UP/DOWN
Position: UP/DOWN switch on the control panel
Refers to the direction of travel
(refer to chapter “Climbing stairs upwards and downwards”)
Adhesive label Note - No handle
Position: C part, below seat, rear side of drive unit
DANGER
Parts in motion

9
4 Product description
4.1 Device overview
9
Control panel
Handle, height-adjustable
Wheel
Lever with chain drive
Climbing leg and climbing feet
Safety brake
Battery indicator
Single-step switch
ComfortStep
Battery pack with tension lock
Battery locking device
LED as indicator of the error codes
Spiral cable
Locking knob for handle

10
Speed control
Safety chip
ON/OFF switch
UP/DOWN switch
Back part
LED lighting to illuminate the stairs
C part with seat
Footrest with foot strap
Supporting handle
Seating unit release button
Castors
Footrest lock pin
7Shoulder harness incl. lap belt
8
Type plate with serial number
9
MAG code socket for magnetic charging system
7
8
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 follow-
ing chapters.

11
4.2 Type plate incl. serial number
Product / Model
Max. load
Batteries
Charging voltage
Operating voltage
Rated power of motor
Barcode (refer to chapter 3)
Serial number (refer to chapter 3)
Symbols (refer to chapter 3)
Manufacturer address
4.3 Intended purpose
The stair climbers are guided manually and are operated by an operator. Operation only by two trained per-
sons who are physically and mentally capable of operating the CR23 safely! The second person only serves as
a safeguard!
They make it possible to transport a single person with reduced mobility safely over stairs, upwards and down-
wards. The products have been designed for indoor and outdoor use, and moving on spiral stairs and slopes
is possible, too.
The intended patient population includes all persons who are able to sit upright unaided (secured with belts
if necessary) and have a maximum body weight corresponding to the technical specication of the respective
model and variant (max. 230 kg).
4.4 Intended patient population

12
4.5 Medical requirements and indication
The patients must be able to sit independently. Secure persons who cannot sit upright unaided with belts to
prevent the occupant from falling out!
The manually guided stair climber assists the accompanying person while transporting the patient over stairs
or slopes, upwards and downwards. The use of the stair climber is intended for patients who are not able to
move by themselves and accompanying persons who do not have sufcient physical endurance and strength
to move the patient over stairs or slopes.
The CR23 is used to transport patients with a person weight of more than 140 kg (maximum person weight:
230 kg).
4.6 Contraindications and restrictions
The stair climbers must not be used if:
• the operator has obtained no training/instruction for the product!
• the operator is below the age of 16!
• there is no supervision for minors of at least 16 years of age!
• the operator is not physically and mentally able to operate the stair climber safely!
• more than one person shall be transported simultaneously!
• the person to be transported cannot sit upright unaided!
• the operator does not have adequate eyesight!
• the braking effect is reduced due to rain, wet conditions, snow or black ice!
• the one-side and/or two-side braking effect of stair climber does not set in!
• escalators or travelators shall be overcome!
• it is not used according to the intended use!
4.7 User group
The stair climbers are intended for the use by:
• medical staff,
• healthcare professionals,
• driving services, and lay operators.
Users are trained in the use of the device by means of a training course.

13
4.8 Technical data
WARNING - Do not exceed the total permissible weight and the max. person weight, as this
may lead to defects or an overload the CR23!
iNOTE - Observe the technical data.
Technology CR2304 / CR2314
Dimensions Refer to chapter "Dimensioned sketch"
Own weight Climbing unit = 35.7 kg, handle unit = 2.3 kg, battery pack = 4.3 kg
Total weight without battery pack= 38.0 kg
Total permissible weight 272 kg
Maximum person weight 230 kg
Climbing speed1) 8 - 21 steps / minute, continuously adjustable
Range per battery charge for an average per-
son weight of 75 kg 1) Approx. 25 oors (accounts for approx. 375 steps)
Range per battery charge for maximum person
weight of 230 kg 1) Approx. 5 oors (accounts for approx. 75 steps)
Maximum height of step 210 | 225 mm (with climbing height extension)
Minimum depth of step2) 140 mm
Required stair width (straight stairs) Width of CR23 + 100 mm
Min. platform size (U-shaped stairs) 1350 x 1350 mm
Min. radius of spiral stairs 1350 mm
Min. step depth (spiral stairs) 140 mm
Max. slope of the stairs 60.3°
Tilt stability In direction of travel 3.7 ° / against direction of travel 2.7 °
Batteries 2 x 12 V / 5 Ah (gas-tight)
Direct current motor 24 V / 275 W
Switching force UP/DOWN switch 3-8 N
Direct operating forces Max. 350 N when climbing stairs - downwards (chapter 7.6)
Sound pressure level < 70 dB
Storing/operating temperature: Device -40 °C to +65 °C / -25 °C to +50 °C
Storing/operating temperature: Battery -20 °C to +65 °C(3) / -25 °C to +50 °C(3)
Charging temperature: Battery 0 °C to +40 °C
Altitude application range (sea level) < 3000 m above sea level
Vibration information The weighted RMS value of acceleration, to which the
upper body is subjected, is typically below 2.5 m/s2.
Adhesive label with serial number On the left of the housing and rear side of the user manual
IP protection class IPX4 protection against splashing water from all directions
Classication according to ISO 7176-28:2012 Type C (according to Annex A, Table 1)
1) With activated ComfortStep, the climbing speed and the range are reduced. The range also depends on the weight of the occupant.
2) Any steps of a smaller depth may not be travelled as in this case it is no longer possible for the wheel to be set down safely.
3) At temperatures below 0 °C the performance of the battery pack will decrease; therefore we recommend a storage temperature of at least 0 °C.

14
4.9 Dimensional drawing
d
f
n
426
h1
min. 1302
max. 1650
a
b
g
e
h2
f
n
g
d
a
b
e
max. 1631
min. 1287
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. 1140mm
h2 Gesamtlänge m. Fußstütze max. 1257mm
i Gesamtbreite 496mm
k Länge zusammengeklappt 451mm
l Breite zusammengeklappt 496mm
m Höhe zusammengeklappt 1335mm
n Winkel Fußstütze zu Sitzfläche 6°
minimaler Wenderadius ca. 1200mm
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
22.02.2017
Kramer
CR2304
1:2
1/1
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
Ersatz für CR2002
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 RD 230Kg
CR2304
038698
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
c
446
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
22.02.2017
Kramer
CR2304
1:5
1/2
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
A0
Ersatz für CR2002
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 RD 230Kg
CR2304
038698
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
k
m
421
1331
496
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
22.02.2017
Kramer
CR2304
1:5
2/2
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
A0
Ersatz für CR2002
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 RD 230Kg
CR2304
038698
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
k
m
421
1331
496
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
22.02.2017
Kramer
CR2304
1:5
2/2
www.aat-online.de
Fax: [phone]
Tel.: [phone]
D-72458 Albstadt
Ehestetter Weg 11
A0
Ersatz für CR2002
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 RD 230Kg
CR2304
038698
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
Dimensions according to ISO
7176-15
a Angle of seating surface 9°
bE󰀨ective seat depth 398 mm
cE󰀨ective seat width 340 mm
dHeight of seating surface at the
front edge 520 mm
e Backrest angle 19°
f Backrest height 615 mm
gDistance between footrest and
seating surface 436 mm
h1 Total length w. footrest min. 1140 mm
h2 Total length w. footrest max. 1257 mm
i Total width 496 mm
k Length folded 451 mm
l Width folded 496 mm
m Height folded 1335 mm
nAngle of footrest to seating
surface 6°
Minimum turning radius Approx.
1200 mm

15
max. 1631
min. 1287
961
186
1078
Maße für Liste Techn. Daten
RoHS & REACH Compliant
Für diese technische Unt erlage behalten wir uns alle Rechte nac h DIN 34 vor.
Ers. für
>315-1000
>120-315
>30-120
>6-30
Zust.
>0,5-6
NameÄnderung 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
Artikelnummer
Reihe 3
14.05.2019 Kramer
CR2304
1:2
4/5
www.aat-online.de
Fax:[phone]
Tel.:[phone]
D-72458Albstadt
Ehestetter Weg 11
Ersatz fürCR2002
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 RD 230Kg
CR2304
038698
Rauheit Normen im Zeichnungsfel d vorrangig

16
4.10 Scope of delivery
Charger incl. instructions and splash guard
Battery pack with tension lock
CR23 with shoulder harness incl. lap belt
4.11 Accessories
Headrest
Charging cable for vehicle
Seat enlargement
Armrests (adjustable in width)
Various mounting systems for loading in the vehicle - without illustration
(if required, the extra user manual "Mounting systems" are also supplied)
NOTE - Only use AAT Alber Antriebstechnik GmbH accessories.
i

17
5 Folding and unfolding
5.1 Seating unit
DANGER - Lock the seating unit and footrest, otherwise they can move instantly!
WARNING - Watch out for pinch points when folding and unfolding!
Unlock the folding mecha-
nism.
» Press the release button
downwards and at the
same time pull the C part
with seat forwards.
Fold out the footrest .
» It locks automatically
Press the C part with the seat
downwards until the mech-
anism has been completely
folded out.
» The castors must touch
down on the ground.
Folding
To fold in the footrest, operate the lock pin and fold up the footrest.
Fold the C part with seat upwards until the folding mechanism locks automatically.
5.2 Mounting the headrest (optional accessory)
CAUTION - Position the headrest at the level of the back of the head to prevent the head from
falling backwards!
Position the bracket of the
headrest on the marking on
the backrest.
» Fix with screws.
Adjust the height of the head-
rest to the height of the occu-
pant's head.
» Tighten the locking screw.

18
6 Starting up
iNOTE - Store the CR23 in a frost-free environment for at least one hour prior to start-up to
avoid malfunctions or defects.
iNOTE - Press UP/DOWN switch only a few seconds after switching on!
5.3 Pulling out the supporting handle
WARNING - Do not use the supporting handle as a carrying handle, as it has not been de-
signed for carrying!
CAUTION - Watch out for the pinch point at the groove opening to avoid injuries when extend-
ing and retracting the supporting handle!
The stair climber was developed to be operated by one person. This person must have been trained and be
physically and mentally capable of operating the CR23 safely! However, it is recommended to operate the
device with a second person as a backup. For minors aged 16 and over, only under supervision.
Pull out the supporting handle
for this purpose.
»The locking is done via the
lock pin.
Retracting the
supporting handle
If the supporting handle is
not needed, it can be pushed
back in manually.
The supporting handle o󰀨 ers the securing trained accompa-
nying person the possibility to guide the CR23 when climbing
the stairs.
i

19
6.1 Adjusting the handles
WARNING - The handles must have been securely xed with the locking screws so that the
handle adjustment does not change instantly!
CAUTION - Watch out for the pinch point at the groove opening to avoid injuries!
Turn the locking screws
of the handles counterclock-
wise.
Pull the handles out to
shoulder height.
Tighten the locking screws.
6.2 Inserting the battery pack and making the spiral cable plug connection
WARNING - The battery pack must be xed and locked to prevent immediate detachment!
Installation.
Place the battery pack on
the locating pins on the drive
housing.
» Fasten the black locking
latch over the tab attached
to the drive housing.
» The release button is
activated automatically.
Disassembly.
Release the lock.
» Open the locking latch.
» Press down the release
button on the battery
pack, then pull o󰀨 the bat-
tery pack.
Plug in the spiral cable.
Plug the spiral cable plug into
the socket on the drive hous-
ing and lock it.
» To unplug, open the lock
and pull out the spiral cable
plug.

20
6.3 Switching on the device
Insert the safety chip for
the immobiliser.
»The safety chip must snap
in!
Switching the CR23 on via
the ON/OFF switch .
6.4 Neutral position
Move the climbing legs
to neutral position by keep-
ing the UP/DOWN switch
pressed.
»If the single-step mode
(s. chap. 6.6) has been acti-
vated, the climbing legs are
automatically stopped in
neutral position!
Incorrect!