Operation; Maintenance And Servicing; Maintenance And Cleaning - Bosch BDU3320 Original Operating Instructions

When changing a wheel, make sure that the sensor cable is
routed so that it is not under tension and has no kinks.
The CenterLock magnet (4) can only be removed and rein-
serted up to 5 times.
Rim magnet
When installing a rim magnet, no sensor is required to detect
a wheel turn. The drive unit itself detects when the magnet is
close to it and calculates the speed and any other data re-
quired from the frequency of the emergence of the magnet
field.
Since the drive unit is sensitive to magnetic fields, avoid
other magnetic fields in the vicinity of the drive unit (e.g.
magnetic clipless pedals, magnetic cadence sensors, etc.) in
order to prevent disruption to the drive unit.

Operation

A control unit from the system generation the smart system
is required for the starting operation of the eBike. Please ob-
serve the operating instructions of the control unit and, if ne-
cessary, additional components from the system generation
the smart system.
Notes on Cycling with Your eBike
When does the drive work?
The drive assists your cycling only when you are pedalling. If
you do not pedal, the assistance will not work. The drive
power always depends on the pedalling force and cadence
you apply.
With low force or cadence, the support will be less than with
high force or cadence. This applies irrespective of the assist-
ance level.
The drive automatically switches off at speeds over 25 km/
h. When the speed falls below 25 km/h, the drive automatic-
ally becomes available again.
An exception applies to the walk assistance function, in
which the eBike can be pushed at low speed without ped-
alling. The pedals may rotate when the walk assistance is in
use.
You can also use the eBike as a normal bicycle without as-
sistance at any time, either by switching off the eBike or by
setting the assistance level to OFF. The same applies when
the eBike battery is drained.
Interaction between the Drive Unit and Gear-shifting
The gear shifting should be used with an eBike in the same
way as with a normal bicycle (observe the operating instruc-
tions of your eBike on this point).
Irrespective of the type of gear shifting, it is advisable that
you briefly reduce the pressure on the pedals when changing
gear. This will aid gear shifting and reduce wear on the
powertrain.
By selecting the correct gear, you can increase your speed
and range while applying the same amount of force.
Gaining initial experience
We recommend that you gain initial experience with the
eBike away from busy roads.
Bosch eBike Systems
Test the various assistance levels, beginning with the lowest
level. As soon as you feel confident, you can ride your eBike
in traffic like any other bicycle.
Test the range of your eBike in different conditions before
planning longer and more demanding trips.
Influences on range
The range is affected by a number of factors, such as:
– Assistance level
– Speed
– Gear shifting behaviour
– Tyre type and tyre pressure
– Age and condition of the eBike battery
– Route profile (gradients) and conditions (road surface)
– Headwind and ambient temperature
– Weight of eBike, rider and luggage
For this reason, it is not possible to predict the range accur-
ately before and during a trip. However, as a general rule:
– With the same assistance level on the drive: The less en-
ergy you need to exert in order to reach a certain speed
(e.g. by changing gears optimally), the less energy the
drive will consume and the higher the range per battery
charge will be.
– The higher the selected assistance level under otherwise
constant conditions, the smaller the range will be.
Taking care of your eBike
Please observe the operating and storage temperatures of
the eBike components. Protect the drive unit, on-board com-
puter and eBike battery against extreme temperatures (e.g.
from intense sunlight without adequate ventilation). The
components (especially the eBike battery) can become dam-
aged through extreme temperatures.

Maintenance and servicing

Maintenance and cleaning

When changing the bulbs, ensure that they are compatible
with the Bosch eBike system of the generation the smart
system (ask your bicycle dealer) and are suitable for the
specified voltage. Bulbs must only be replaced with bulbs of
the same voltage.
All components fitted to the drive unit and all other compon-
ents of the drive (e.g. chainring, chainring receptacle, ped-
als, cranks) must only be replaced with identical compon-
ents or components that have been specifically approved by
the manufacturer for your eBike. This will protect the drive
unit from overloading and becoming damaged.
Do not immerse any components, including the drive unit, in
water or clean them with pressurised water.
Have your eBike checked by an expert at least once a year
(including mechanical parts, up-to-dateness of system soft-
ware).
Please have your eBike serviced and repaired by an author-
ised bicycle dealer.
English – 3
0 275 007 3D2 | (13.02.2023)