AAT c-max U2 User manual

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EN2021-03 (2.1)
c-max U2 C1612
Translation of the original operating manual

2
Assembly team
Phone [phone]
Phone [phone]
Fax [phone]
Email [email protected]
New devices
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Phone [phone]
Fax [phone]
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Head o󰀩ce
Phone [phone]
Email [email protected]
www.aat-online.de
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 qual-
ity standards and o󰀨ers its clients an
all-inclusive package.
We are there for you!
AAT service concept
Customer service at its best
Service and repairs
Phone [phone]
Phone [phone]
Fax [phone]
Email [email protected]
AAT Alber Antriebstechnik GmbH
Ehestetter Weg 11 · D-72426 Albstadt
Phone: [phone]
Fax: [phone]
[email protected] · www.aat-online.de

3
The stair climber c-max U2 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. Neverthe-
less, a low level of residual risk 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 c-max U2, 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/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 C1612 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.10 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.11 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
5 Folding and unfolding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5.1 Seat unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 Assemble the head rest (optional accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.3 Arm rests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.1 Adjust the handles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.2 Insert battery pack and connect spiral cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.3 Turning 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 Check capacity of the batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7 Position of the occupant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.1 Side arm rest adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.2 Apply foot belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.1 Drive on level ground / overcoming obstacles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.2 Tilting the stair climbing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
8.3 Operating on a slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.4 Climbing - upstairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.5 Climbing - downstairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.6 Laying the device down on the stairs / emergency stop function . . . . . . . . . . . . . . . . . . . .28
8.7 Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
8.8 Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9 Care and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9.1 Battery pack and charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.2 Check the lining of the brakes and the climbing feet. . . . . . . . . . . . . . . . . . . . . . . . . .32
9.3 Cleaning and disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.8 Long-term storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .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 physical 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/c-max-u2
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 away from sources of ignition.
The c-max U2 can 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 can behave di󰀨erently under
real conditions compared to laboratory tests.
Training may only be carried out 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!
10 Malfunction and trouble shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.4 Replacing fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
9.5 Safety check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.6 Re-use (change of operator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
11 Warranty and liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
12 Corrective actions / product recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 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
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 maximum person weight, as this may lead to
defects or overloading of the c-max U2!
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 the c-max U2 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 Erklärung
CE marking
Location: type plate
The product complies with the relevant provisions of the EC Regulation
EC 2017/745 (MDR)
20XX
Date of manufacture
Location: type plate
Indicates the year the medical device was manufactured.
Manufacturer
Location: type plate
Shows the manufacturer of the medical device (AAT Alber Antriebstechnik GmbH)
SN
SN
Location: type plate
Serial number of the product e.g. C1612XXXXXX
Medical Device
Location: type plate
Observe the user manual!
Location: type plate
The user manual must be observed! (www.aat-online.de)
Attention!
Location: type plate
Refers to the need for the user to review the user manual and
important safety-related information.
Barcode
Location: type plate
Contains the AAT serial number
Technical safety test badge
(refer to chapter Technical safety test)
Location: drive unit, left side
Informs about the due date of the next technical safety test
TÜV-Süd marking
Location: frame, horizontal bar back rest
Indicates that the product has been successfully tested at TÜV Süd Product Service
GmbH according to the standards DIN EN 12182, DIN EN 12184 and the applicable
parts of ISO 7176.
Label on drive unit
Operation only by one trained person!
Max. load 160 kg.
Observe the user manual!
Check the safety brakes before operation according to the user manual!

8
Label UP / DOWN
Location: UP / DOWN switch on control unit
Indicates the driving direction
(see chapter „Climbing upstairs and downstairs“)
Label notice - No handle
Location: C-part, below seat, rear of the drive unit.
DANGER
Parts in motion

9
4 Product description
4.1 Device overview
Control unit
Handle, adjustable
Arm rest, can be swivelled and width-adjustable
Foot rest, foldable with foot belt
C-part with seat
Carrying bars (only available if ordered in advance - optional accessories)
Lever with chain drive
Climbing leg with climbing foot
Safety brake
Climbing unit
Battery pack with safety interlock
Battery display

10
Single step switch
ComfortStep
ON/OFF switch
UP/DOWN switch
Safety chip
Speed control
Tightening screw for handle
Release knob for seat unit
Wheel
Steering rollers
Rating plate with serial number
iManufacturer 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.

11
4.2 Type plate incl. serial number
Product / Model
Max. Load
Battery
Charging Voltage
Operating Voltage
Rated Power
Barcode (see chapter 3)
Serial number (see chapter 3)
Symbols (see chapter 3)
Manufacturer‘s address
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).

12
4.5 Medical requirements and indication
The patients must be able to sit independently. Secure persons, who cannot sit on their own, with belts (see
Accessories). This keeps 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 - The approved total weight may not be exceeded because it can lead to malfunction
or cause an overload of the c-max U2!
iNOTE – Observe the technical data.
Technology c-max U2 C1612
Measurements See chapter “Dimensional drawing”
Weight Climbing unit c-max U2 incl. both arm rests = 30.9 kg
Battery pack = 4.0 kg, Total weight without battery pack = 30.9 kg
Total weight approved 194 kg
Max. weight of the person (max. load) 160 kg
Climbing speed1) 9 - 23 steps / minute (continuously adjustable)
Range with one charge of the batteries -
with an average load of 75 kg1) approx. 25 oors (corresponds to approx. 375 steps)
Range with one charge of the batteries -
with a maximum load1) approx. 9 oors (corresponds to approx. 135 steps)
Maximum height of step 210 / 225 mm (extended climbing height)
Minimum depth of step2) 140 mm
Necessary step width (straight stairs) Width c-max + 100 mm
Minimum platform size (U-shaped stairs) 1350 x 1350 mm
Minimum radius of spiral staircases 1350 mm
Minimum depth of step (spiral staircases)2) 140 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 / downwards (Chapter 8.5)
Noise information < 67 dB
Storing/operating temperature: device -40° C to +65° C / -25° C to +50° C
Storing/operating temperature: batteries -20° C to +65° C(3) / -25° C to +50° C(3)
Charging temperature: batteries 0° C to +40° C
Height operating range
(NHN, normal height null) < 3.000 m above sea level
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 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.
3) Temperatures below 0°C will reduce the performance of the battery pack, therefore we recommend a storage temperature of at least 0°C.

14
4.9 Dimensional drawing C1612
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
aAngle of the seat 10°
bE󰀨ective seat depth 400 mm
cE󰀨ective seat width 340 mm
dHeight of the seat, frontal edge 509 mm
eAngle of the back rest 19°
fHeight of the back rest 615 mm
gDistance between foot rest and seat 437 mm
h1 Total length with foot rest min. 973 mm
h2 Total length with foot rest max. 1106 mm
iTotal width 486 mm
kLength, folded 429 mm
lWidth, folded 486 mm
mHeight, folded 1134 mm
nAngle from foot rest to seat 8°
oDistance between arm rest and seat 202 mm
Min. turning radius ca. 1000 mm

15
4.10 Scope of delivery
Charger incl. user manual
Battery pack
c-max U2
4.11 Accessories
Head rest
Charging cable for your vehicle
Lap belt
Harness belt including lap belt
Climbing height extension
Carrier rods
Oxygen holder
We o󰀨er a wide range of bracket systems for storing in your vehicle - not shown in this manual
(If needed, the special user manual "bracket systems“ is included in this delivery)
NOTE – Only use AAT Alber Antriebstechnik GmbH accessories.
i

16
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 mech-
anism.
» Push down the release
knob and simultaneously
pull down the C-part.
Fold out thefoot rest .
Repeat these steps in the
reverse order to fold to-
gether. The quick-release
pins automatically click
into place.
Push down the C-part until
the mechanism is entirely un-
folded.
» The steering rollers
have to touch the oor.
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 height of the
occupant.
» Secure with the locking
screw.

17
6 Start-up
iNOTE - Store c-max U2 in a frost-free environment for at least one hour prior to start-up
to avoid malfunctions.
iNOTE - Wait a few seconds after turning on before you press the UP/DOWN switch!
5.3 Arm rests
DANGER - The arm rests must not be loaded unevenly as there is a risk of tipping!
DANGER - Do not attach any objects (such as bags) to the arm rests! Risk of tipping!
WARNING - Never sit on the arm rests or use as a carry handle, as these are not
designed for this purpose!
WARNING - When using the c-max U2, the occupant's arms must not protrude beyond the
arm rests!
CAUTION - Special care must be taken at the pinch point on the swivel part to avoid injuries
when swivelling the arm rests!
iNOTE - The arm rests must not be loaded with more than 90 kg per side.
Release the swivel mecha-
nism by pushing in the lock-
ing knob.
Tilt the arm rest forward
until this clicks into place
again in the horizontal posi-
tion.
» Check if the seat is posi-
tioned correctly.
Arm rests function as side connements and may be used as an arm support.

18
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 han-
dles to shoulder height.
Tighten the locking screws.
6.2 Insert battery pack and connect spiral cable
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.
» Yellow release button locks
automatically.
To remove the battery pack,
push down the release button
and pull out battery pack.
Plug in the helix cable.
Insert the plug of the helix ca-
ble into the socket and lock it
with the security clip.
To unplug the helix cable re-
lease the security clip and
pull it o󰀨.

19
6.3 Turning on the device
Insert safety chip for the
engine immobilizer.
» Safety chip must latch!
Turn on c-max U2 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 automat-
ically in the neutral position!
Wrong!

20
6.5 Checking the safety brakes
DANGER - Do not use the c-max U2 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 both
sides of the chassis.
» Check the safety brakes
before each use.
Pull in the climbers to their up-
most position and tilt c-max U2
backwards.
Test: c-max U2 cannot be
pushed forward, only back-
wards = safety brakes ac-
tive.
6.6 Single step mode
Single step mode
Activate / deactivate.
LED glows = single step
mode is activated!
Should you choose to turn of
the single step mode you can
do so by pressing the appro-
priate button.
» LED does not glow = single
step mode is deactivated!
i
Manufacturer’s
recommendation:
Only deactivate the sin-
gle step mode, if the op-
erator is able to use the
c-max U2 safely.
DANGER - If the single step mode is deactivated, make sure to operate
the c-max U2 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 c-max
U2 towards you. See
detailed description in
Chapter 8.2.