Bosch BDU280P Instruction Manual page 125

English – 6​
Assembly
Inserting and removing the battery
For inserting and removing the eBike battery in/from
the eBike, please read and observe the battery oper-
ating instructions.
Check speed sensor
A
(1) Speed sensor
(2) Spoke magnet
The speed sensor (1) and its spoke magnet (2) must
be fitted such that the spoke magnet moves past the
speed sensor at a distance of at least 5 mm and at
most 17 mm with each rotation of the wheel.
Note: If the distance between the speed sensor (1)
and the spoke magnet (2) is too small or too large, or
if the speed sensor (1) is not properly connected, the
speedometer display will fail and the eBike drive unit
will operate in emergency mode.
Should this occur, loosen the screw of the spoke mag-
net (2) and fasten the spoke magnet to the spoke
such that it runs past the marking on the speed sen-
sor at the correct clearance. If the speed is still not
being indicated on the speedometer display after do-
ing this, please contact an authorized bicycle dealer.
0 275 U07 XD3 | (06.02.2019)
Operation
Start-up
Requirements
The eBike system can only be activated when the fol-
lowing requirements are met:
– A sufficiently charged battery is inserted (see bat-
tery operating instructions).
– The on-board computer is properly inserted in the
holder (see on-board computer operating instruc-
tions).
– The speed sensor is correctly connected Checking
(1)
the speed sensor (see figure A).
Switching the eBike system on/off
(2)
The following options are available for switching on
the eBike system:
– If the on-board computer is already switched on
when you insert it into the holder, the eBike system
will be automatically activated.
– When the on-board computer and the eBike battery
are inserted, briefly press the on/off button of the
on-board computer.
– With the on-board computer inserted, press the on/
off button on the eBike battery (some bicycle manu-
facturer-specific solutions prevent access to the
battery on/off button; see the battery operating in-
structions).
The drive is activated as soon as you start pedaling
(except for in the push assistance function, Switching
the push assistance on/off). The motor output de-
pends on which assistance level is set on the on-
board computer.
As soon as you stop pedaling when in normal opera-
tion, or as soon as you have reached a speed of
20 mph, the eBike drive unit switches off the assis-
tance. The drive is automatically re-activated as soon
you start pedaling again and the speed is below
20 mph.
EN-121
Bosch eBike Systems