AAT c-max U2 C1612 Installation and operating instructions

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EN2023-02 (6.1)
c-max U2 C1612
Translation of the original user manual

2
Assembly team
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at AAT prove once again our high claim
of quality and o󰀨 er our clients an all-in-
clusive package.
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Phone [phone]
Fax [phone]
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AAT Alber Antriebstechnik GmbH
Ehestetter Weg 11 · 72426 Albstadt · Germany
Phone: [phone]
Fax: [phone]
[email protected] · www.aat-online.de

3
The stair climber c-max U2 has been tested by TÜV Süd Product Service GmbH in Hanover/Germany
according to ISO 7176-28.
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
c-max U2 and endanger the operator or occupant and persons in the immediate vicinity of the device!
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 safety-related requirements. Neverthe-
less, 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 manu-
al on our homepage. These versions with details of the production period are obtainable at:
www.aat-online.de/de/bda/c-max-u2

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.11 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
5 Unfolding and folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5.1 Seating unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5.2 Mounting the headrest (optional accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.3 Armrests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6 Starting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6.1 Adjusting the handles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
6.2 Inserting the battery pack and making the spiral cable plug connection . . . . . . . . . . . . . . . . 18
6.3 Switching on the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
6.4 Neutral position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
6.5 Checking the safety brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.6 Single-step mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.7 ComfortStep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.8 Checking battery capacity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
7 Occupant taking a seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.1 Lateral armrest adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.2 Putting on the foot strap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.1 Moving on level ground / overcoming obstacles . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.2 Tilting the stair climbing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
8.3 Moving on slopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.4 Climbing stairs - Upwards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
8.5 Climbing stairs - Downwards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.6 Laying down on stairs / emergency stop function . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.7 Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
8.8 Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9 Care and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9.1 Battery and charger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
9.2 Checking the brake linings, climbing feet linings and wheel slide protection . . . . . . . . . . . . . . 32
9.3 Cleaning and disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.4 Replacing fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
9.5 Technical safety testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.6 Reuse (change in operator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.8 Long-term storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

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 - Possibly 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/de/bda/c-max-u2.
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.
Does not consist exclusively of ame retardant materials. Keep the away from sources of ignition.
The c-max U2 may interfere with highly sensitive electromagnetic elds of other electronic devices
(e.g. anti-theft devices).
Stability tests were performed under laboratory conditions. The c-max U2 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 Fault conditions and troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
11 Warranty and liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
12 Recalls and corrective actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

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 c-max U2 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 c-max U2.
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 c-max U2 may 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 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. C1612XXXXXX
Medical Device
Position: Type plate
Barcode
Position: Type plate
Contains the AAT serial number
Technical safety test badge
(refer to chapter Technical safety testing)
Position: Drive unit, on the left
Informs about the due date of the next technical safety test
TÜV Süd test mark
Position: Framework, crosspiece of back part
Refers to the fact that the product has been successfully tested by TÜV Süd Product Ser-
vice GmbH according to the standards DIN EN 12182, DIN EN 12184 and the relevant
parts of ISO 7176.
Observe the user manual!
Position: Next to the type plate
The user manual must be observed! (www.aat-online.de)
Refers to the need for the user to review the user manual and important
safety-related information.
Adhesive label Notes
Position: Drive unit
The device may only be operated by trained persons!
Max. load 160 kg.
Observe the user manual!
Check the safety brakes before use according to the user manual!

8
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


Adhesive label Risk of crushing
Position: Between wheel and climbing leg
Never reach into rotating/moving parts to avoid crushing.

9
4 Product description
4.1 Device overview
Control panel
Handle, height-adjustable
Armrest, swivelling and adjustable in width
Footrest, foldable with foot strap
C part with seat
Carrying rods (only available if ordered in advance - optional accessory)
Lever with chain drive
Climbing leg with climbing foot
Safety brake
Climbing unit
Battery pack with lock
Battery indicator
Single-step switch
ComfortStep

10
ON/OFF switch
UP/DOWN switch
Safety chip
Speed control
Locking knob for handle
Release button for seating unit
Wheel
Castors
Type plate 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 follow-
ing chapters.

11
4.2 Type plate incl. serial number
4.3 Intended purpose
The stair climbers are guided manually and are operated by an operator.
They make it possible to transport a single person with reduced mobility safely over stairs, upwards and
downwards. The products have been designed for indoor and outdoor use, and moving on spiral stairs and
slopes is possible, too.
4.4 Intended patient population
The intended patient population includes all persons who are able to sit independently and have a maximum
body weight corresponding to the technical specication of the respective model and variant (max. 160 kg).
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

12
4.5 Medical requirements and indication
The patients must be able to sit independently. Secure persons who cannot sit upright unaided with belts
(refer to accessories) 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.
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!
• medical devices with e.g. a life support function, and diagnostic devices are in the proximity!
• 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
• laymen.
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 c-max U2.
iNOTE - Observe the technical data.
Technology c-max U2 C1612
Dimensions Refer to chapter "Dimensional drawing"
Own weight Stair climber c-max U2 incl. both armrests = 30.9 kg
Battery pack = 4.0 kg, Total weight without battery pack= 30.9 kg
Total permissible weight 194 kg
Maximum person weight (max. load) 160 kg
Climbing speed1) 9 - 23 steps / minute (continuously adjustable)
Range per battery charge for an average
person weight of 75 kg 1) Approx. 25 oors (accounts for approx. 375 steps)
Range per battery charge for maximum per-
son weight of 160 kg 1) Approx. 9 oors (accounts for approx. 135 steps)
Max. height of step 210/ 225 mm (with climbing height extension)
Min. depth of step2) 140 mm
Required stair width (straight stairs) Width of c-max + 100 mm
Min. platform size (U-shaped stairs) 1350 x 1350 mm
Min. radius of spiral stairs 1350 mm
Min. depth of step (spiral stairs) 2) 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 8.5)
Sound pressure level < 67 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)
Battery charging temperature 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 sub-
jected, 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 degree of protection: protection against splashing water from all direc-
tions
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
a
h2
e
max.1467
h1
g
o
b
min.1125
n
d
f
RoHS & REACH Compliant
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
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
AATAlber Antriebstechnik GmbH
Artikelnummer
Reihe 3
02.02.2021 Kramer
C1612
1:2
1/1www.aat-online.de
Fax: [phone]
Tel.:[phone]
D-72458A lbstadt
Ehestetter Weg 11
A0
DIN ISO 2768-mK
DIN ISO 1302
1
In Bearbeitung
c-max U2 160kg
C1612
034911
Rauheit Normen im Zeichnungsfeld vorrangig
i
RoHS & REACH Compliant
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
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
AATAlber Antriebstechnik GmbH
Artikelnummer
Reihe 3
02.02.2021 Kramer
C1612
1:2
1/1www.aat-online.de
Fax: [phone]
Tel.:[phone]
D-72458A lbstadt
Ehestetter Weg 11
A0
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 160kg
C1612
034911
Rauheit Normen im Zeichnungsfeld vorrangig
437
c
k
l
m
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 160kg
C1612
034911
Artikelnummer
RoHS & REACH Compliant
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
NameÄnderung Datum
±0,8
±0,5
±0,3
±0,2
±0,1
bearb.
gepr.
Werkstoff
Datum Name
Toleranzen
Zeichnungsnummer
Baugruppe
Benennung
BL.
Oberfläche
A0
Werkstück-
kanten DIN ISO 1371 5
-0,3
+0,3 Maßstab
Revision
Status
AAT Alber AntriebstechnikGmbH
Reihe 3
02.02.2021 Kramer
C1612
1:2
1/1www.aat-online.de
Fax: [phone]
Tel.:[phone]
D-72458 Albstadt
Ehestetter Weg 11
Rauheit Normen im Zeichnungsfeld vorrangig
k
l
m
DIN ISO 2768-1-m / DIN ISO 2768-2-m
DIN ISO 1302
1
In Bearbeitung
c-max U2 160kg
C1612
034911
Artikelnummer
RoHS & REACH Compliant
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
NameÄnderung Datum
±0,8
±0,5
±0,3
±0,2
±0,1
bearb.
gepr.
Werkstoff
Datum Name
Toleranzen
Zeichnungsnummer
Baugruppe
Benennung
BL.
Oberfläche
A0
Werkstück-
kanten DIN ISO 1371 5
-0,3
+0,3 Maßstab
Revision
Status
AAT Alber AntriebstechnikGmbH
Reihe 3
02.02.2021 Kramer
C1612
1:2
1/1www.aat-online.de
Fax: [phone]
Tel.:[phone]
D-72458 Albstadt
Ehestetter Weg 11
Rauheit Normen im Zeichnungsfeld vorrangig
Dimensions according to ISO 7176-15
a Angle of seating surface 10°
bE󰀨ective seat depth 400 mm
cE󰀨ective seat width 340 mm
d Seat height at the front edge 509 mm
e Backrest angle 19°
f Backrest height 615 mm
g Distance between footrest and seat 437 mm
h1 Total length w. footrest min. 973 mm
h2 Total length w. footrest max. 1106 mm
i Total width 486 mm
k Length folded 429 mm
l Width folded 486 mm
m Height folded 1134 mm
n Angle of footrest to seating surface 8°
o Distance of armrest to seat 202 mm
Minimum turning radius Approx. 1000 mm

15
4.10 Scope of delivery
Charger incl. instructions and splash guard
Battery pack
c-max U2
4.11 Accessories
Headrest
Charging cable for vehicle
Lap belt
Shoulder harness incl. lap belt
Climbing height extension
Carrying rods
Oxygen holder
Various mounting systems for loading in vehicles - without illustration
(if required, the extra user manual "Mounting systems" is also supplied)
NOTE - Only use AAT Alber Antriebstechnik GmbH accessories.
i

16
5 Unfolding and folding
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 .
To fold, repeat these steps
in reverse order. The re-
lease pin engages automat-
ically.
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.
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.

17
6 Starting up
iNOTE - Store the c-max U2 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 Armrests
DANGER - The armrests must not be loaded only on one side as there is a risk of tipping over!
DANGER - Do not attach any objects (such as bags) to the armrests. Risk of tipping over!
WARNING - Never sit on the armrests or use them as carrying handles as they are not de-
signed for this purpose.
WARNING - While using the c-max U2, the occupant's arms must not extend beyond the arm-
rests!
CAUTION - Pay attention to the pinch point on the swivelling part to avoid injuries when swivel-
ling the armrests.
iNOTE - The armrests must not be loaded with more than 90 kg per side.
Release the swivel mecha-
nism by pressing in the lock-
ing button.
Tilt the armrest forwards
until it locks into the horizon-
tal position.
» Check that it is correctly
seated.
The armrests serve as lateral restraints and may be used as a support for the arms.

18
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!
Mounting the battery pack.
Place the battery pack on
the locating pins on the drive
housing.
» The yellow release button is
activated automatically.
If the battery pack is to be
removed, press down the re-
lease button and pull o󰀨 the
battery 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.

19
6.3 Switching on the device
Insert the safety chip for
the immobiliser.
» The safety chip must snap
in!
Switch the c-max U2 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
(refer to chap. 6.6) has
been activated, the climb-
ing legs are automatically
stopped in neutral position!
Incorrect!

20
6.5 Checking the safety brakes
DANGER - If there is only a one-sided braking e󰀨 ect or no braking e󰀨 ect, do not use the c-max
U2, to avoid falling from the stairs. Notify the manufacturer, the AAT  eld service, or the author-
ised specialist dealer!
WARNING - Check safety brakes without occupant!
There are safety brakes
on both sides of the chassis.
»Test the safety brakes be-
fore every journey.
Retract the climbing leg com-
pletely and tilt the c-max U2
backwards.
Test: the c-max U2 can-
not be rolled forwards,
but only backwards =
safety brakes active.
6.6 Single-step mode
Single-step mode
Deactivate / Activate.
LED is lit = single-step mode
activated!
If you do not need the sin-
gle-step mode, you can
switch it o󰀨 manually on the
membrane keypad.
»LED is not lit = single-step
mode deactivated!
i
Manufacturer’s recom-
mendation:
Only deactivate the sin-
gle-step mode, if the op-
erator is able to handle
the c-max U2 safely.
DANGER - With the single-step mode deactivated, it is essential to ensure correct operation,
otherwise the c-max U2 may slip!
i
Recommendation by
the manufacturer:
As an aid, support your
foot on the drive housing
to tilt the c-max U2 back-
wards. For the detailed
procedure, refer to chap-
ter 8.2.