Hero Eco A2B Alva+ User manual

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Owner´s manual Alva+

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Contents
1.0 Introduction
2.0 Important information
3.0 Your A2B
4.0 Understanding your A2B
5.0 Battery use, storage and disposal
6.0 Important pre-ride safety information
7.0 Maintenance
8.0 Cleaning your A2B
9.0 Troubleshooting
10.0 Technical information
11.0 Warranty and security details
12.0 Disposal
13.0 Owner registration
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Owner`s manual
1.0 Introduction
Welcome and congratulations on buying your new A2B Alva+*, the electric bike that’s taking transport in a whole new direction. It’s the
new revolutionary way to get to work, pop to the shops or just get some fresh air. Compared to jumping in the car, an ebike is a lot more
fun, easier to park and will reduce your fuel costs as well as your impact on the environment... as you’ll soon find out!
UK Office
Hero Eco Ltd.
80 Coleman St
London EC2R 5BJ
UK
www.wearea2b.com
*A2B Alva+ is termed as ‘A2B’ throughout the rest of this manual.
US office
Hero Eco, Inc.
207 97th St.
San Francisco, CA 94103
USA
German office
Hero Eco Ltd
Reichenberger Strasse 124
10999 Berlin
Germany

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2.0 Important information
This owner’s manual contains important safety, performance and service information.
Please ensure you read this thoroughly before your first ride.
Your A2B should be fully assembled and the battery charged by your A2B dealer at the time of delivery. If not contact us immediately as
this will void your warranty. Please ensure that all users of your A2B read and understand the following important information.
This indicates a potentially hazardous situation which, if not avoided, could result in a serious injury, property damage or
damage to equipment or inadvertent system failure.
Provides helpful or other important related information.
If you have any questions or are not sure about any instructions in this owner manual ask your A2B dealer.
• We recommend that you always wear
an approved cycle helmet at all times
and light or fluorescent clothing at night
when riding the A2B.
• Make sure you know and practice the
rules of safe and responsible riding.
There is always a risk of serious / fatal
injury or damage as a result of an
accident while riding an A2B. By
choosing to ride the A2B you assume
responsibility for that risk.
Important symbols
• Your existing insurance policies may not
provide accident cover for your A2B.
Contact your insurance company or
agent for information.
• This owner’s manual makes no
representation about the safe use of the
A2B under all conditions.

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Owner`s manual
3.0 Your A2B
3.1 Components
1. Saddle (seat)
2. Seat post
3. Seat post quick release
4. Main tube
5. Display
6. Head light
7. Front mud guard
8. Front wheel tire
9. Front wheel rim
10. Quick release
11. Front disk brake and rotor
12. Pedal, crank arm and chain ring
13. Drive chain
14. Torque Sensor
15. Hub motor
16. Rear wheel rim
17. Rear wheel tire
18. Kickstand
19. 7-speed derailleur and freewheel
20. Tail light
21. Rear mud guard
22. Battery
23. Fixed rear rack
24. Battery connector
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1. Saddle (seat)
2. Seat post
3. Seat post quick release
4. Front mud guard
5. Front wheel tire
6. Front wheel rim
7. Front disk brake and rotor
8. Pedal, crank arm and chain ring
9. Display
10. Kickstand
11. Drive chain
12. Rear wheel tire
13. Rear wheel rim
14. 7-speed derailleur and freewheel
15. Hub motor
16. Rear mud guard
17. Battery
18. Fixed rear rack
19. Battery connector
20. Main tube
21. Quick release
22. Head light
23. Tail light
24. Torque Sensor

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A. Right brake lever (operates rear brake)
B. Left brake lever (operates front brake)
C. 7-speed twist shifter
D. Right pedal
E. Left pedal
F. Throttle
HYBRID
A
B
C
E
D
F

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Owner`s manual
3.2 Changing components or adding accessories
Before installing any component or accessory, including a different
tyre, make sure that it is compatible with your A2B by checking with
your A2B dealer.
Read, understand and follow the instructions that accompany the
component or accessory you purchase for your A2B.
As with all mechanical components, the bicycle is subjected to
wear and high stresses. Different materials and components may
react in different ways to wear or stress fatigue. If the design life
of a component has been exceeded, it may suddenly fail possibly
causing serious or fatal injuries to the rider. Any form of crack,
scratches or change of colouring in highly stressed areas, such as
frame, fork and handle bar, indicates that the life of the component
has been reached and it should be replaced immediately by an A2B
dealer.
Failure to conform with compatibility, proper installation,
operation and maintenance components or accessories can result
in serious or fatal injury.
Using non-genuine components or replacement parts may
compromise the safety of your A2B and void the warranty.
If you change components or add accessories, you do so at
your own risk because A2B may not have tested that component
or accessory for compatibility, reliability or safety on your A2B.
3.3 Brake lever adjustment
Can you comfortably operate the brakes? If not, take your A2B to
an A2B dealer and ask them to adjust the angle of the brake levers.
Alternatively, follow the instructions below to adjust the brake lever
angle:
1. Loosen the bolt underneath the brake lever with an appropriate
allen key.
2. Adjust the angle to suit.
3. Tighten up the bolt underneath, ensuring the brake lever is firmly
xed in place.
Should you need to adjust the brakes themselves, please take
your A2B to an A2B dealer to make the required adjustments.

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Frame Height Frame Height
Inside Leg Height
Frame Height
1 inch / 2,5 cm
Clearance
Inside Leg Height
3.4 Seat height adjustment
The seat height may require adjustment. Ask your A2B dealer to
adjust it before you ride, however to adjust the seat yourself follow
these instructions:
To determine the correct height of the seat for the rider
1. Straddle the assembled A2B with your feet shoulder-width apart
and flat on the ground.
2. There must be at least 25 mm/1 inch clearance between the
frame height and the inside leg measurement of the rider.
Height adjustment
1. Release the seat post quick release by rotating the quick release
lever away from the seat post until it is fully open.
2. Adjust the saddle height accordingly. DO NOT raise the seat
beyond the ‘minimum insertion’ mark on the seat post.
3. Firmly grip the seat tube with your hand, and push the lever
over to the closed position towards the frame, ensuring that it
does not protrude so as to cause injury to the rider. The lever is
securely tightened when it takes a significant amount of force to
position it in the closed position. The appropriate amount of
force necessary to close the lever when it is properly adjusted
will result in an imprint of the lever in the palm of your hand.
When properly closed, it is impossible to move unless you
open it again by reversing the steps above. If you can easily
move it, open the quick release lever and tighten the adjusting
nut another 180º and try again.
4. Ensure the seat clamp bolt (seat pillar - seat post) is tightened
to 27 Nm.
5. After adjustment, ensure there is no movement in the seat
position in any direction.
Failure to correctly secure the seat can result in serious or
fatal injury.
• This owner’s manual makes no representation about the safe
use of the A2B under all conditions.

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Owner`s manual
3.5 Handle bar adjustment
1. Loosen the bolts (A) using an
appropriate allen key.
2. Position the handle bar
symmetrical to the bar stem.
3. Turn the handle bar to the
desired angle.
4. Tighten the bolts consistently
to 5 Nm.
3.6 Bar stem adjustment
Bar stem alignment
1. Loosen the bolts (B) using an
appropriate allen key.
2. Once loose, align the stem
with the front wheel.
3. Once aligned, tighten the bolts
consistently to 15 Nm.
A
B
B
C
Bar stem angle adjustment
1. Loosen bolt (C) using an
appropriate allen key.
2. Position the stem to the
desired angle.
3. Tighten bolt (C) to 17-18.5
Nm ensuring the stem is
aligned to the front wheel.
Caution: this is an A-head
stem, the top screw (D) is preloaded with 1-2 Nm and does not
adjust the handlebar stem. Trying to tighten bolt (D) can damage
the head set bearings.
Failure to correctly secure the bar stem can result in serious or
fatal injury. Ensure there is no play in the steering and that the
steering is working smoothly. Should you need further advice to
adjust the headset, please contact your A2B dealer.

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3.7 Display adjustment
1. Loosen bolt (E) on the rear side of the display using an appro-
priate allen key.
2. Position the display to the desired angle.
3. Tighten the bolt (E) to 6 Nm.
E

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Owner`s manual
4.0 Understanding your A2B
After having read this section, if you are still unsure, please ask an A2B dealer to explain any functions or features that you do
not understand before your first ride.
4.1 A2B Overview
The Alva+ offers the best of both worlds,
power on demand via throttle, and now
riders can also benefit from the pedal assist
feature. Simply choose which you want to
use and set the controls on the display. If
you choose to use the throttle, it’s all in the
flick of a wrist, twist the throttle on the
handlebar to accelerate to the level of
assistance you want.
You can pedal at the same time or just enjoy
the ride. To use the pedal assist, simply use
the mode buttons on the display to change
the level of assistance provided by the
motor which enables you to set your own
pace and dene your riding experience.
There are three assistance levels:
‘economy’ for maximum range, ‘standard’ for
an optimal blend of range and performance,
and ‘high’ for sporty dynamic performance.
Then, as you pedal, the motor measures
how much energy you are pedalling with
and matches it, effectively doubling your
output without needing to work up a sweat.
4.2 Starting and stopping
1. Wear your helmet and select a quiet area
away from cars, other cyclists, obstacles or
other hazards
2. Make sure that the battery is fully
recharged.
3. Power ON the electronic system by using
the E-key (see section 4.3).
4. Raise the kickstand into the riding position.
DO NOT sit on the A2B while it is supported
by the kickstand, you will damage the
kickstand and, possibly the frame.
5. Mount your A2B and get comfortable.
6. Apply motor power by throttlling and/or
pedalling the A2B.
7. Test the brakes at slow speed. The left
brake lever actuates the front brake and
the right brake lever actuates the rear
brake. Put your weight toward the rear
and gently apply the brakes, rear brake
first (right brake lever). Applying brakes
too hard can lock up a wheel, which
could cause you to lose control and fall.
8. Check out the handling and response
of your A2B. Familiarise yourself with
how the suspension responds to brake
application and rider weight shifts.
Remember that there are power cut-off
switches embedded into the brake levers.
When you apply the brakes, power to the
motor will turn OFF. Therefore, do not hold
the brake levers when you want the motor
to run.

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4.3 Display and electronic key
Turning ON/OFF the electrical system with the electronic key
Your A2B is protected by an electronic key (E-key).
The system needs to be activated before your ride.
1. Hold the E-Key directly above the display.
2. The display will light up. Remove the E-key as soon as the A2B
logo appears.
3. At the end of your trip: to deactivate the system hold the E-key
above the display until it turns off. Remove the E-key now. The
system is deactivated.
By switching on the system with the E-Key display, the battery
and controller will wake up from sleep mode. In rare cases not all
components will wake up the first time (e.g. no motor support), turn
off the system and try again.
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Owner`s manual
4.4 Display - functions
Functions and menu description
A. Knob button (turn and push function)
B. Battery state of charge indicator
C. Speed indicator
D. Assist level indicator
E. Speed unit (km/h or mph) indicator
Consider the E-key as you would a car or door key. We
recommend that you attach the E-key to your other keys you carry
with you.
B
D
C
A
E

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4.5 Assist level pre-selection
You have the choice between 3 different assist level modes. Which
assist level mode is actually selected is shown on the display at the
right upper side.
Select the assist level:
Turn the knob (counter clockwise) to change between the different
assist modes. Once you have reached the correct assist level, push
the knob to confirm your selection. The display switches back to the
standard screen with the new assist level set.
Display overview
1. standard display
2. Mode 0 – No power assistance, all display functions will work.
3. Mode 1 – Minimal power assistance, ideal for saving battery
power, maximum range.
4. Mode 2 - Standard power assistance, normal power, average
range.
5. Mode 3 - Extra power assistance, maximum power, reduced
range.
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Owner`s manual
4.6 Setup (change between km & miles).
Push the knob button to enter the menu.
Turn the knob untill setup (6) appears. Now push the knob
for 2 seconds to enter the setup menu. You can now change
between km and miles by pushing the knob (7) again for
2 seconds. Please wait, the system confirms your selection
automatically.
You enter the ts-value screen (8) by turning the knob in the
setup menu. This submenu is for servicing and allows dealer
and service technicians to measure the correct function of your
torque-sensor. To exit the setup menu from here turn the knob
untill it shows back (9) and confirm with a push to return to the
standard screen again (1).
4.7 Switching between Odo & Trip
Push the knob button to enter the menu.
Turn the knob untill odo or trip (10/11) appears. Please wait,
the system confirms your selection automatically.
To reset trip: push the knob for two seconds once you are on
the trip screen (11).
If you leave your A2B inactive for 10 minutes, the system
will switch off (including lights) and will go into sleep-mode.
ts-value
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back
9
odo
231
10
setup
6
km
7
miles
trip
0.0
11
trip
5.1

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If you leave your A2B inactive for 10 minutes, the system will
switch off (including lights) and will go into sleep-mode.
4.8 Error Codes
If an error occurs, the warning sign (!) will indicate that an error has
occurred and one of the following error codes will be shown on the
display:
01 HARDWARE_Brake_SET: Over current hardware
02 RECUPERATION: Error regenerative braking
03 FAST_OVER_VOLTAGE: Fast overvoltage
04 FAST_UNDER_VOLTAGE: Fast undervoltage
05 SLOW_OVER_VOLTAGE: Slow overvoltage
06 SLOW_UNDER_VOLTAGE: Slow undervoltage
07 OVER_TEMP_135: Motor temperature over 135 °C
08 OVER_TEMP_INT: Over temperature controller
09 CORRUPT_HALL_VALUE: Error motor signals
10 WRONG_HALL_ORDER: Error motor rotatating direction
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11 Not applicable
12 RECOVER_WHILE_DRIVE: Reset while riding
13 I_OFFSET_OVER_LIMIT: Current offset is over limit
14 I_OFFSET_UNDER_LIMIT: Current offset is under limit
15 TORQUE_OFFSET_OVER_LIMIT: Torque offset is over limit
16 TORQUE_OFFSET_UNDER_LIMIT: Torque offset is under limit
Error messages will automatically be reset if the error ceases to
occur. Please contact your A2B dealer in the case of a permanently
displayed error message.
Error Codes

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Owner`s manual
4.9 Luggage Carrier
Your A2B is equipped with a durable luggage carrier. In case you
need to carry luggage or any goods with your A2B, please carefully
read the enclosed instructions before using the luggage carrier.
1. The luggage carrier is attached to the rack tube of your A2B by
4 x T25x18 torx at head screws. If you are frequently using the
luggage carrier, always check that the screws are secured tightly
at torque value 6-8 Nm.
2. The maximum weight that can be carried is 25 Kg.
3. Please ensure that the luggage is fastened securely so that it
can not fall off while riding. Take care that loose straps or other
items can not get caught by the spokes or wheels while riding.
4. The luggage carrier is not designed for carrying a second rider
or the attachment of a child seat. It should also not be used to
pull a trailer.
5. The permissible load of your A2B should not be exceeded,
please refer to the specification section in the owner’s manual.
6. Do not modify the luggage carrier in any case of usage.
7. Distribute the weight of your luggage or goods evenly between
the two sides of the luggage carrier.
8. Please be aware when the luggage carrier is loaded, your A2B
may behave differently, especially when steering or braking the
bike.
9. Once you have attached your luggage to the luggage carrier,
please be aware that the rear light and reflector may be obscured
by your luggage.
Failure to observe these instructions can result in serious
or fatal injury.

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4.10 Gears
Your A2B has a 7-speed rear derailleur controlled by the twist gear
shifter on the left hand side of the handlebar.
To shift gears, pedal at a steady pace and rotate the shift grip until
you find the gear most comfortable for you and the current
conditions.
To make pedalling easier (when encountering a hill), rotate the grip
toward you to down-shift, this will also make you pedal faster to
achieve any given speed.
To ride faster (on a flat section or a downhill), rotate the grip away
from you to up-shift, allowing you to pedal more slowly for a given
speed, but with more effort required.
Never pedal backward while shifting gears. The chain could
derail and you could lose control, resulting in an accident that could
cause serious or fatal injury and/or property damage. Always pedal
forward at a steady pace when shifting gears.
The 7-speed rear derailleur operates independently of the
motor. When using the derailleur control, adjust the gear setting
to find a gear that makes pedalling comfortable while assisting the
motor.

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Owner`s manual
4.11 Power assistance options
The Alva+ has two types of assistance for you to choose from,
Power on Demand via the Throttle, or Pedal Assist. They can either
be used simultaneously or individually.
1. Power on demand via the throttle
Apply motor power by rotating the twist throttle toward you.
The electrical system of your A2B allows for gradual application
of power, and allows for adjustment of power between OFF and
FULL. This feature enables you to set that speed at which you are
most comfortable.
The electrical system of your A2B will provide instantaneous power
whether you are pedalling or not. Therefore, there is no need to
pedal as you start-up.
However, the motor consumes more power during a start from a
standing stop than at any other time. More power is consumed
during start-up than even climbing a steep hill. Therefore, in order
to conserve battery power, and increase your overall range, pedal
during a start from a standing stop to relieve some of the load from
the battery.
Remember that there are power cut-off switches imbedded in the
brake levers. When you apply the brakes, power to the motor will
turn “OFF”. Therefore, do not hold the brake lever(s) when you want
the motor to run.
2. Pedal assist
Choose a level of assistance on the display and begin pedalling.
The electrical system of your A2B allows for application of power
according to the pedal assist settings chosen. The levels are
‘economy’, ‘standard’ and ‘high’. This feature enables you to set that
speed at which you are most comfortable.
The electrical system of your A2B will provide instantaneous power
when you begin pedalling. However, the motor consumes more
power using the ‘high’ setting than the ‘standard’ or ‘economy’
settings.
3. Both power on demand and pedal assist
Engage both features before beginning your journey and pedal or
throttle as required.
Your A2B has the ability to use both the Throttle and Pedal Assist
features simultaneously. Using the display, choose your level of
pedal assistance which will be maintained throughout all pedalling.
Choose the setting to allow power on demand via the throttle to
propel you from a standing start, up hills or when you do not want
to pedal.
Remember that there are power cut-off switches imbedded in the
brake levers. When you apply the brakes, power to the motor will
turn “OFF”. Therefore, do not hold the brake lever(s) when you want
the motor to run.