7
iv. If a battery is or appears to be damaged or overheating for any reason, do not use the
bike and leave the battery in a place where it cannot cause fire. Immediately contact your
retailer for advice and a safety check.
IMPORTANT
Ignoring any of the safety rules above could cause serious injury or fire.
2.4
Recharging your battery
2.4.1 Before charging your battery, make sure the charger is turned off and connect your battery
to the charger at the charging socket. Plug the charger into a switched mains socket that is
switched off and turn on socket. A red lamp will light up on the charger and indicate the
battery is charging. When the red light turns green, the battery is fully charged. To optimize
battery life, leave the charger connected for a further hour, then turn off the charger, turn
off the main socket and disconnect the charger from the mains. Always disconnect the
charger from the mains before disconnecting the charger from the battery. It is possible that
the battery will take up to twelve hours to charge on the first three charges.
2.4.2 When charging the battery, always do so in a well-ventilated area.
2.4.3 Do not leave the charger connected to the mains when not in use.
2.5
Water
2.5.1 Your electric bicycle is rain and splash proof and can be used in all weathers.
2.5.2 The electrical components of the bicycle, such as motor, battery, and controller, must not be
submerged in water.
2.6
Maintenance and adjustments
2.6.1
IMPORTANT!
Do not attempt to open the casings of the battery, motor or controller. It
could be dangerous, and all warrantees will become void. If you experience a problem,
contact our service department or your Wisper retailer.
2.6.2 Wheel spokes should be adjusted after 300 miles of riding. Handlebar and saddle tubes
should never be raised beyond the maximum permissible, indicated by a safety line around
the tubes. The recommended torque (tightness) of crucial fixings is as follows:
Front axle nuts.
46N.m
Back axle nuts.
70N.m
Handlebar and stem clamp bolts.
12N.m
Handlebar stem expander bolt.
10N.m
Seat pillar clamp nut/bolt.
5-8N.m
Seat clamp nuts.
24N .m
Crank axle Allen bolts.
40N.m
Gear shifter nuts.
4N.m
