Back-Pedal Brake & Crank Release Function; Operation; Safety Instructions - ProActiv NJ1 Operating Instructions Manual

Operating instructions NJ1 e-assistant
You can find further information in the brake
manufacturer's instructions.
18.6 Back-pedal brake & crank release
function

18.6.1 Operation

This back-pedal brake is a closed hydraulic
system consisting of a generator unit and a
disc brake calliper. The system has automatic
wear compensation for the brake pads.
To adapt the system to your body weight and
the physical limitations of the driver, the
springs of the system are available in three
strengths. These can also be replaced retro-
spectively.
The back-pedal brake is delivered with a crank
release function which allows reverse driving
and manoeuvring via the hand rims. For func-
tional reasons, the back-pedal brake always
acts as soon as the product moves backwards.
Therefore, the driver must first unlock the re-
verse movement by operating the crank re-
lease function.
The braking function via the backward move-
ment (crank movement against the direction of
acceleration) is always guaranteed – with the
crank release function activated or deactivated.
Figure 23: Generator unit PRO ACTIV back-pedal
brake
18.6.2 Operation
The brake is operated by moving the cranks
against the acceleration direction (clockwise).
The brake force applied is adjusted by the
strength of the backwards movement of the
cranks.
The crank release function is operated by
pressing the side pressure plate. To activate
the crank release function, the left-hand pres-
sure plate must be operated (seen from the
direction of travel). To return to normal driving
operation with the back-pedal brake, the right-
hand pressure plate must be operated.
Activating the
crank
release function
Figure 24: Left- and right-hand pressure plates

18.6.3 Safety instructions

Before every trip, perform a brake test
while stationary by moving the cranks with the
normal operating force rearwards. The drive
wheel must not be able to move when the sys-
tem is operated.
At regular intervals, check that all of the
connections, lines, bleed screws and the sur-
face of the transmitter unit do not leak and that
all the screw connections on the brake system
are tightened securely.
At regular intervals, check that the brake
pads and discs are free from grease, oil or
other contamination. In addition, check the
thickness of the brake disc. The minimum
thickness is printed on the brake disc. In addi-
tion, the brake pad thickness must be checked
with a measuring calliper. The minimum pad
thickness plus support material is 2.5 mm.
Measure the pad thickness at the thinnest
point.
Do not drive if your product is faulty in one of
the previously listed points. Contact your
dealer immediately who will arrange mainte-
nance by PRO ACTIV.
Deactivating the
crank
release function
16