AAT c-max U1 C1414 Installation and operating instructions

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EN2018-04 (1.1)
c-max U1 C1414 / C1611
Translation of the original user manual

2
Assembly team
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Repairs processing
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Show room & exhibition devices
Re-use
Complaints
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AAT proves once again its superior qual-
ity standards and offers its clients an all-
inclusive package.
We are there for you!
AAT service concept
Customer service at its best
Service and repairs
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Phone [phone]
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AAT Alber Antriebstechnik GmbH
Ehestetter Weg 11 · D-72426 Albstadt
Phone: [phone]
Fax: [phone]
[email protected] · www.aat-online.de

3
CE declaration of conformity
The company AAT Alber Antriebstechnik GmbH hereby declares that the c-max U1 complies with the
relevant provisions of EC Directive 2006/42/EC, 2007/47/EC and 93/42/EC. If any alteration is made to
c-max U1 without the agreement of AAT Alber Antriebstechnik GmbH, this declaration shall no longer be
valid. This statement is valid only for the products with the article numbers: 300151, 300405.
The products are marked with in accordance with the legal guidelines.
The technical documentation is stored for inspection by the responsible authority for at least  ve years
at the above address. A system for market observation is implemented.
Manufacturer’s signature:
Martin Kober
(Managing Director)
The stair climber c-max U1 has been successfully tested by TÜV Süd Product Service GmbH in
Hanover according to ISO 7176-28.
WARNING
Failure to observe this user manual, in particular the safety instructions, can lead to defects in the c-max
U1, 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!
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.
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-u1

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.1 Device overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4.2 Indication and intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Contraindication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.4 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.5 Dimensional drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.6 Lieferumfang . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.7 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
5 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
5.1 Handle unit and C-part with seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.2 Assemble the head rest (optional accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3 Arm rests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.1 Adjust the handles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2 Insert battery pack and connect spiral cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.3 Folding out the foot rest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6.4 Turning on the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6.5 Neutral position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6.6 Checking the safety brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.7 Single step mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.8 ComfortStep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.9 Check capacity of the batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7 Position of the occupant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.1 Swivel out or remove the arm rests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.1 Drive on level ground / overcoming obstacles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.2 Tilting the stair climbing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
8.3 Operating on a slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.4 Climbing - upstairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.5 Climbing - downstairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.6 Laying the device down on the stairs / emergency stop function . . . . . . . . . . . . . . . . . . . .26
8.7 Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
8.8 Transportation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9 Care and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9.1 Battery pack and charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9.2 Check the lining of the brakes and the climbing feet. . . . . . . . . . . . . . . . . . . . . . . . . .30
9.3 Cleaning and disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.4 Replacing fuses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
9.5 Safety check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9.6 Re-use (change of operator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9.7 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9.8 Long-term storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
10 Malfunction and trouble shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
11 Warranty and liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
12 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 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-u1
Read the user manual prior to start-up and observe the warning notices and safety instructions.
In the event of reading difculties, training contents must be broadened verbally.
The user manual must be kept in a safe place after reading.
Contains some ammable materials. Keep away from sources of ignition.
The c-max U1 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 U1 can behave differently 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!

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 U1 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 U1!
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 U1 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 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. c-max U1 C1414XXXXXX / C1611XXXXXX
www.aat-online.de
Note on the user manual
The user manual must be observed
24 V -
Electrical voltage / V = Volt
Inspection plate for technical safety testing (see Chapter 9.5)
Provides information on the due date of the next technical safety test

8
4 Product description
4.1 Device overview
Control unit
Handle, adjustable
Arm rest, removable
Foot rest, foldable
C-part with seat
Tightening screw for handle
Lever with chain drive
Climbing leg with climbing foot
Safety brake
Climbing unit
Battery pack with safety interlock
Battery display

9
Single step switch
ComfortStep
ON/OFF switch
UP/DOWN switch
Safety chip
Speed control
Rating plate with serial number
Steering rollers
Wheel
Back rest
Tightening screw for C-part with seat
Tightening screw for back rest
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.

10
4.2 Indication and intended use
With the c-max U1 stair climber you can transport one person with limited mobility safely and
easily up and down stairs. Indoor and outdoor spiral staircases can also be navigated without issue.
Driving on slopes is also possible.
The stair climber is developed to be operated by one person. This person must be trained and physi-
cally and mentally capable of safely operating the c-max U1! They must have sufcient vision capability!
Minors below the age of 16 are not allowed to operate the c-max U1! Minors of at least 16 years are
allowed to operate the c-max U1, 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 c-max U1 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 spec-
i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 c-max U1 C1414 and c-max U1 C1611
. The stair climbers differ in terms of technology and optics - but not in terms of the application. You can
see which version you have by checking the serial number. The total permissible weight for c-max U1
C1414 is 170 kg. The c-max U1 C1611 is designed for a total weight of 190 kg (see Chapter 4.4 Techni-
cal data). All chapters in this manual apply to both models.
4.3 Contraindication
The c-max U1 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 older than 16 years old, but there is no supervision!
• the operator is physically and mentally unable to safely use the c-max U1!
• more than one person needs to be transported at the same time!
• the person to be transported cannot sit independently!
• the operator does not have sufcient visual capacity!
• the braking effect is impaired due to rain, wet conditions, snow or ice!
• the required braking effect of the c-max U1 is not guaranteed (on one or both sides)!
• escalators or travelators must be negotiated!
• medical devices, for example with a life support function, and diagnostic devices, are nearby!
• the intended use is contradicted!

11
4.4 Technical data
WARNING - The approved total weight may not be exceeded because it can lead to malfunction
or cause an overload of the c-max U1!
iNOTE – Observe the technical data.
Technology c-max U1 C1414 c-max U1 C1611
Measurements
Height = min. 1090 mm - max. 1440 mm
Width with arm rests = 440 mm
Width without arm rests = 485 mm
Depth with the foot rest folded in = 730 mm
Depth with the foot rest folded out = 915 mm
Weight
Steigeinheit = 18,1 kg, C-Teil mit Sitz = 5,5 kg,
Rückenteil = 4,5 kg, Beide Armlehnen = 1,2 kg,
Akku-Pack = 4,1 kg, Ladegerät = 0,3 kg
Gesamtgewicht = 33,7 kg
Total weight approved 170 kg 190 kg
Max. weight of the person 140 kg 160 kg
Climbing speed1) 8 - 23 steps / minute (continuously adjustable)
Range with one charge of the batteries1) approx. 25 oors (corresponds to approx. 375 steps)
Maximum height of step 210 / 225 mm (extended climbing height)
Minimum height 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
Maximum gradient of the stairs 60.3°
Batteries 2 x 12 V / 5 Ah (gas-proof)
Direct current motor 24 V / 275 W
Operating force UP/DOWN switch 3-8 N
Direct operating force max. 350 N whilst climbing upstairs / downwards (Chapter 7.6)
Noise information < 70 dB
Storing/operating temperature: device 0° C to +60° C / -30° C to +50° C
Storing/operating temperature: batteries 0° C to +60° C / -30° C to +50° C
Vibration information The weighted RMS value of acceleration the upper body is exposed to lies
typically below 2.5 m/s2.
Type label with serial number Left on the power unit and the rear of the user manual
IP protection class IPX4 protection class: Protection against splash water from all sides
Classication according to ISO 7176-28:2012 Type C (table 1 of annex A)
1) The climbing speed as well as the range with one charge of the batteries is reduced if the ComfortStep is activated. The range also depends
on the weight of the person seated.
2) Never use the stair climber to climb stairs with too little depth because it is no longer possible for the main wheels to touch the steps safely.
In the interest of progress, we reserve the right for technical changes.

12
4.5 Dimensional drawing
d
n
o
f
h1
max.1435
h2
g
e
a
b
min.1090
C1414 - C1611
Maße nach ISO 7176-15
a Winkel der Sitzfläche 8°
b effektive Sitztiefe 403mm
c effektive Sitzbreite 340mm
d Höhe der Sitzfläche an der vorderen Kante 517mm
e Rückenlehnenwinkel 18°
f Rückenlehnenhöhe 615mm
g Abstand der Fußstütze zur Sitzfläche 395mm
h1 Gesamtlänge m. Fußstütze min. 980mm
h2 Gesamtlänge m. Fußstütze max. 1100mm
i Gesamtbreite 490mm
k Länge zusammengeklappt 773mm
l Breite zusammengeklappt 444mm
m Höhe zusammengeklappt 1090mm
n Winkel Fußstütze zu Sitzfläche 7°
o Abstand Armauflage zum Sitz 160mm
minimaler Wenderadius ca. 1050mm
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
01.12.2015
Kramer
C1611
1:5
1/1
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 U1 160kg
C1611
034912
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
440
i
c
C1414 - C1611
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
01.12.2015
Kramer
C1611
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 U1 160kg
C1611
034912
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
l
k
m
C1414 - C1611
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
01.12.2015
Kramer
C1611
1:5
2/2
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 U1 160kg
C1611
034912
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
l
k
m
C1414 - C1611
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
01.12.2015
Kramer
C1611
1:5
2/2
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 U1 160kg
C1611
034912
Artikelnummer
RoHS & REACH Compliant
Normen im Zeichnungsfeld vorrangig
Dimensions according to ISO 7176-15
aAngle of the seat 8°
bEffective seat depth 403 mm
cEffective seat width 340 mm
dHeight of the seat, frontal edge 517 mm
eAngle of the back rest 18°
fHeight of the back rest 615 mm
gDistance between foot rest and seat 395 mm
h1 Total length with foot rest min. 980 mm
h2 Total length with foot rest max. 1100 mm
iTotal width 490 mm
kLength, folded 773 mm
lWidth, folded 444 mm
mHeight, folded 1090 mm
nAngle from foot rest to seat 7°
oDistance between arm rest and seat 160 mm
Min. turning radius +/- 1050 mm

13
4.6 Scopy of delivery
Charger incl. user manual and splash protection
Battery pack
c-max U1
4.7 Accessories
Head rest
Charging cable for your vehicle
Lap belt
Harness belt including lap belt
Climbing height extension
Inclination indicator
Footrest (shortened / extended)
Footrest for children
Widened arm rests
NOTE – Only use AAT Alber Antriebstechnik GmbH accessories.
i

14
5 Assembly
5.1 Handle unit and C-part with seat
DANGER - Lock the handle unit and c-part safely, otherwise parts may move involuntarily!
Tighten the locking screws!
WARNING - Special care must be taken to avoid crushing or pinching of body parts while assembling.
Attach the back rest to the
chassis by putting it onto the
guide pins on top of the chas-
sis . Insert the tightening
knobs .
Attach the C-part plus seat
to the chassis.
» The tightening screws of
the C-part t into the
corresponding holes in the
frame.
» Make sure that the back
rest is securely fastened.
Afx the back rest.
» Secure both tightening
screws by turning them
clockwise.
» Make sure that the back
rest is securely fastened.
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.

15
6 Start-up
iNOTE - Store c-max U1 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 U1, 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.
Insert arm rests on both
sides.
Arm rests function as side connements and may be used as an arm support.
Please always make sure
that the stop bolts snap into
their appropriate notches.
Repeat the steps from Chapter 5 in reverse order to remove the arm rests.

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 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
cable into the socket and lock
it with the security clip.
To unplug the helix cable re-
lease the security clip and
pull it off.

17
6.4 Turning on the device
Insert safety chip for the
engine immobilizer.
» Safety chip must latch!
Turn on c-max U1 by
pressing the ON/OFF
switch .
6.5 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 automati-
cally in the neutral position!
Wrong!
6.3 Folding out the foot rest
Fold out the foot rest .

18
6.6 Checking the safety brakes
DANGER - Do not use the c-max if the required braking effect (on one side or both sides)
is not guaranteed because a reduced braking effect can lead to falling down the stairs. Contact
the manufacturer or your 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
upmost position and tilt c-max
backwards.
Test: c-max cannot be
pushed forward, only
backwards = safety brakes
active.
6.7 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 U1 safely.
DANGER - If the single step mode is deactivated, make sure to operate
the c-max U1 correctly and safely! Otherwise it can lead to falling down the stairs!
i
Manufacturer’s
recommendation:
Put your foot on the hous-
ing and tilt the c-max to-
wards you. See detailed
description in Chapter
8.2.

19
6.8 ComfortStep
Activate / deactivate.
» LED glows = ComfortStep
is activated!
» It ensures a pleasant and
comfortable climbing pro-
cess.
Should you choose to turn off
the ComfortStep you can do
so by pressing the appropri-
ate button.
» LED does not glow =
ComfortStep is deacti-
vated!
Manufacturer
information:
Every time you turn on
the device, the last used
setting will be repro-
duced.
i
iNOTE - If an adjustment of the height of the step is required, please contact
the AAT  eld staff or your authorized dealer!
6.9 Check capacity of the batteries
Battery display
Green = battery full
Battery display
Yellow = battery low
» Charge batteries!
Red = battery empty
» Charge batteries!
» Audio warning every 12 sec.!
» The capacity of the batter-
ies is suf cient for max. 20
- 35 steps!

20
7 Position of the occupant
Turn on c-max by pressing
the ON/OFF switch.
Secure stand of the c-max.
Press the UP/DOWN switch
direction UP.
» Climbers should touch the
oor.
Position of the occupant.
» If necessary fold out the
arm rests.
» Observe if the occupant is
sitting safely.
» If present, secure with belts
(optional accessories).
» Place arms on the thighs or
on the arm rests.
7.1 Swivel out or remove the arm rests
Sitting down can be facilitated
by folding out the arm rests.
» Raise the arm rests until the
locking bolts are exposed.
Turn the arm rests backwards
and insert them on both si-
des.
After the occupant has ta-
ken a seat you put the arm
rests back into their origi-
nal position.