Oxygen LEPTON User manual

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LEPTON
EDM
INSIDE

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INDEX
INDEX............................................................................................1
INTRODUCTION .....................................................................3
GENERAL FEATURES..........................................................4
ELECTRICMOTOR.........................................................................4
DRIVE ELECTRONICS (FIG.1)..........................................................4
BATTERY CHARGER ......................................................................5
ELECTRICBATTERY......................................................................6
VEHICLE MARKINGS (FIG.2)..........................................................6
INSTRUMENTS AND CONTROLS ( FIG. 3 ).............7
DASHBOARD ( FIG.4 )...........................................................8
INDIVIDUAL CONTROLS...................................................9
CONTROLS ON THE LEFTHANDLEBAR (FIG. 5)..............................9
CONTROLS ON THE RIGHT HANDLEBAR (FIG. 6).........................10
IGNITION SWITCH (FIG. 7)............................................................11
STEERING LOCK (FIG.8)..............................................................11
ELECTRONIC SECURITY KEY (FIG. 9)...........................................11
AUSILIARY EQUIPMENT................................................12
LOCKING/UNLOCKINGTHE SADDLE (FIG.10)...............................12
CRASH HELMET COMPARTMENT (FIG. 11 )..................................12
BAO HOOK (FIG. 12).....................................................................12
OPERATING INSTRUCTION..........................................13
STARTING....................................................................................13
STOPPINGANDPARKING.............................................................13
SETTING THE VEHICLE ON THE STAND (FIG. 13)..........................14
BRAKES (FIG. 14)..........................................................................14
BATTERY COMPARTMENT (FIG.15)..............................................15
BATTERY MANAGEMENT............................................................16
BATTERY CHARGER....................................................................16
WHEN YOU DON'T USE THE SCOOTER..........................................18
DESCRIPTION OF ALARMS AND POSSIBLE
SERVICE REQUESTS .........................................................19
A) "ALARM"CATEGORY...............................................................19
B) "ERROR" CATEGORY................................................................19
DESCRIPTION OF POSSIBLE CAUSES FOR ACTIVE ALARMS AND
ERROR..........................................................................................23
MAINTENANCE....................................................................25
BATTERY (FIG. 16)........................................................................25
CHECKING THE REAR REDUCTION GEAR OIL LEVEL (FIG.17)......28
CHANGING THE REAR REDUCTION GEAR OIL (FIG. 17)................29
FRONTWHEEL (FIG.17-18).............................................................29
REAR WHEEL...............................................................................30
GREASING THE REAR BRAKE OGIVE (FIG. 20)..............................30
CHECKINGTHE STEERING (FIG. 21)...............................................31
CHECKING THE ENGINE FULCRUM AXIS (FIG. 22)........................31
REMOVING THE HEADLIGHT FAIRING (FIG. 23)............................32
ADJUSTING THE HEADLIGHT BEAM (FIG. 24)...............................32
CHANGING BULBS.......................................................................33
LUGGAGE RACK (FIG. 28) -OPTIONAL EXTRA...............................34

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TECHNICAL DATA .............................................................35
INTRODUCTION
The company Oxygen S.p.A. would like to thank you for your confidence in its products and congratulate you on your
purchase of the new electric LEPTON scooter.
This manual features all the main points you will need to know to look after your Lepton, get the best possible
performance out of it and prolong its service life cost effectively.
The Lepton has been designed for city use on roads only.
N.B.: Being a moped, the Lepton is not designed to carry passengers. The Lepton has a top speed of 45 Km/h (28
mph), and can be registered as a MOPED in some states.
WARNING:
oany work carried out on the scooter during the warranty period by any person other than
authorized OXYGEN S.P.A. personnel shall result in the warranty becoming void.
odon't forget your Lepton is very quiet when it runs, and bear this in mind when riding near other
vehicles and pedestrians.
Oxygen S.p.A. reserves the right to make any changes to its models at any time, though the essential features
described and illustrated herein shall remain unaltered. and therefore declines liability for any errors encountered in
the manual as a result of said changes.

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GENERAL FEATURES
ELECTRIC MOTOR
Your Lepton scooter uses a three-phase brush-less permanent-magnet electric motor.
Apart from its high efficiency and low consumption this motor is also characterized by its compactness, lightness and
silent running and the fact is does not require routine maintenance.
DRIVE ELECTRONICS (FIG.1)
The heart of your Lepton scooter is its electronic drive and
management system (EDM) known as "DRIVE".
The system can be divided into the following functional
components:
1. Generation of auxiliary voltage, both internal and
external (ancillary equipment). The system taps the
external voltage originating from the traction battery unit
and supplies the following output voltage:
othe internal voltage required to run the hardware
properly
othe 12 V for the scooter's external ancillary
equipment. Fig. 1

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2. Control of the brushless motor. The motor is controlled by means of the different physical value readings, i.e.:
ointernal sensors checking the intensity of the current delivered to the motor;
oexternal sensors checking the temperature status and condition of rotary parts, located in the motor.
In this regard, it is essential that there are no breaks in the signals-to-motor connection cable. Consequently,
if the user notices any damage to this cable, the vehicle must be checked by a service centre immediately or
the Warranty conditions shall become void.
3. Management of auxiliary signals to and from the drive regarding:
oAnti-theft device
oSpeed, operating status and diagnostics indicator device
oMonitoring of the battery charge status.
The advantages of the DRIVE lie in the high efficiency and low energy consumption, energy recovery during braking,
rpm management at constant speed, battery management and battery charge status check as well as the
management of the other auxiliary functions.
BATTERY CHARGER
The battery charger is the intermediary element between the power mains and the electric scooter. It transforms the
altemating voltage supplied by the mains into direct voltage.
There is a high-frequency battery charger built into the DRIVE of your Lepton.
It can be connected to any 220/240 Volt outlet.
The built-in battery charger is pragrammed for the automatic charging of the battery model used on Leptons only. The
battery charger cannot be used to recharge other battery types.

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ELECTRIC BATTERY
There is a compartment under the footboard capable of housing four 38AH batteries connected in series.
VEHICLE MARKINGS (FIG. 2)
Frame number
The frame number is printed on a bracket welded in the
central part of the frame, on the right-hand side.In
accordance with the new internationalregulations, the
scooter must feature the VIN marking consisting in 17
alphanumeric characters essential for the vehicle's univocal
identification for 30 years.
The "type-approved plate" must be applied in the same
position, on the left-hand side.
Frame n. ............................................
Fig. 2

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INSTRUMENTS AND CONTROLS ( FIG. 3 )
1) Rear brake lever.
2) Left rearview mirror.
3) Horn .
4) Mode control.
5) Indicator switch .
6) Light switch .
7) Standard drive and start mode control.
8) Sprint mode control.
9) Dashboard.
10) Right rearview mirror (optional extra).
11) Electronic throttle.
12) Front brake lever.
13) Ignition switch and steering lock.
14) Electronic security key.
15) Bag hook.
Fig. 3

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DASHBOARD ( FIG.4 )
1) Indicator telltale.
2) Battery recharge warning light.
3) Low battery charge warning light.
4) Lights indicator light.
5) Standard drive mode indicator light.
6) Sprint mode indicator light.
7) Speedometer.
8) LCD strip. displays the programmed function and
any faults.
Fig. 4

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INDIVIDUAL CONTROLS
CONTROLS ON THE LEFT HANDLEBAR (FIG. 5)
1) Horn
The horn sounds when the button is pressed .
2) Indicator switch .
Move the switch to the left " " to indicate you are
turning left; move the switch to the right " ",to indicate
you are turning right.
Return the switch to the centre to turn off the indicator.
3) Mode control.
This enables the programmed functions on the LCD strip of the
dashboard to be chosen in the following order:
oRemaining runtime (aut.) expressed in kilometres
and calculated based on the driving behaviour of the last 15 seconds.
oTotal distance covered (t.) in kilometres.
oPartial distance covered km.
Fig. 5

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oIn order to zeroize the latter function. keep the button pressed for 5 sec.
CONTROLS ON THE RIGHT HANDLEBAR (FIG. 6)
1) Light swltch
The lights come on when the switch is set to " " .
2) Standard drive mode control
This enables the scooter to be started ridden in normal mode
at a maximum speed of 45 km/h. The relevant indicator light on
the dashboard lights to advise that the control has been
switched on.
3) Sprint mode control
This enables the rider to shift from standard drive to sprint
mode when pressed for a few seconds.
This shift must be made whilst the scooter is powered and
enabled, but at a very low speed or at a standstill.
The relevant indicator light on the dashboard lights to advise
that the control has been switched on.
N.B.: the same conditions must be observed when returning to the standard drive mode.
Fig. 6

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IGNITION SWITCH (FIG. 7)
The ignition switch is located on the right-hand side near the steering head (1 ). Turn
the key to to start the scooter.
STEERING LOCK (FIG. 8)
In order to lock the steering. turn the handlebar as far to the left as it will go with the
key (1 ) turned to " ", press the key, release it and then set it to " "
Remove the key.
N.B.: The ignition key Is used to enable the ignition switch/steering lock and the
saddle lock. The scooter comes with two keys (one is a spare).
ELECTRONIC SECURITY KEY (FIG. 9)
The electronic security key interface is located on the left-hand side of the legshield.
When the electronic key is inserted, the means is enabled for starting and the
immobilzer-type anti-theft device disabled.
Fig. 8
Fig. 9
Fig.
7

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AUSILIARY EQUIPMENT
LOCKING/UNLOCKINGTHE SADDLE (FIG.10)
The saddle lock (1) is located on the rear fairing. In order to unlock the saddle, insert
the ignition key and turn it anticlockwise, then lift.
To lock the saddle, simply lower it and press down until it locks in place.
CRASH HELMET COMPARTMENT (FIG. 11 )
The crash helmet compartment is located under the saddle.
The maximum weight the compartment is designed to carry is approx. 2 to 3 kg.
WARNING: Before locking the saddle, make sure you have not left the keys in
the crash helmet compartment by mistake.
BAO HOOK (FIG. 12)
The bag hook (1) is located on the countershield.
The maximum weight the hook is designed to carry is approx. 1 to 2 kg.
Fig. 10
Fig. 11
Fig.
12

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OPERATING INSTRUCTION
STARTING
1. Set the ignition switch to " " (FIG. 7). The lights on the dashboard come on for a second as the test check
is run. The message CODE appears on the LCD display.
2. Insert the electronic security key which enables the scooter to be started and disables the anti-theft device. The
standard drive mode light starts to flash. The electronic key can now be removed and the scooter remains
enabled.
3. Press the standard drive mode control (FIG. 6, pos. 2). The corresponding light (FIG. 4, pos. 5) stops blinking
and remains steadily lit, indicating the engine is ready to be started.
STOPPING AND PARKING
1. Release the electronic throttle, stop the scooter by pulling on the brakes, set the ignition switch to " " (FIG.
7) and remove the electronic security key. This causes the power supply to be cut off and the scooter disabled,
with the anti-theft device being re-enabled.
N.B.: The Lepton features a security function called "stand by" which is enabled when the standard drive mode
control is pressed quickly twice in a row. When in this status, the vehicle is not enabled to start, even though all its
functions are active. When pressed again, the standard drive control restores the initial situation.

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SETTING THE VEHICLE ON THE STAND (FIG. 13)
Hold the scooter by the handlebar and the rear cover, at the same time
pressing down the lever to the left of the stand.
BRAKES (FIG. 14)
In order to ensure the brakes work perfectly, measure the distance the lever travels before the brake's braking action
actually starts. The freeplay at the very end of the brake lever must be approx. 5/10 mm (FIG. 14). If this is not the
case, contact an authorized Oxygen S.p.A. dealer for a checkup and
possible adjustment.
N.B.: The Lepton scooter also features an effective engine brake which
starts working automatically when the electronic accelerator control is
released.
WARNING: Pay Attention when you use the engine brake because no brake
light works.
Fig. 13
Fig. 14

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BATTERY COMPARTMENT (FIG.15)
There is a compartment under the footboard capable
of housing four 38AH batteries connected in series.
The batteries are reached by removing the cover
of said compartment (FIG. 12) which is fastened at
the front with a lock and at the back by a click-in system.
Before entering the battery compartment,
the ignition key must be removed.
Use the set of quick contacts supplied to fit the Fig.15
batteries, bearing in mind that each connection must
be made between a negative pole (-) and a positive pole (+).
Following the diagram featured on the battery fastening bar, connect the black cable, which ends in a quick-release
coupling, to the negative pole of the battery unit; connect the terminal end of the white cable from the quick-release
coupling kit to the terminal of the fuse carrier and the quick-release coupling end to the positive pole of the battery
unit. Next, connect up the intermediate connections, carefully observing the colour coding to match the terminals and
poles of the batteries.
When disassembling, open the battery compartment, disconnect the quick-release terminals (the positive one first,
then the negative) followed by all the intermediate connections. Finally, remove one battery at a time.
Fig. 15

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Under no circumstances should the batteries be kept completely discharged, even for short periods of time.
BATTERY MANAGEMENT
When the battery low warning light starts flashing, the amount of energy contained in the batteries is sufficient to
cover a distance of less than 15 km.
The battery low warning light remains steadily lit when the energy reserve is sufficient to cover a distance of less than
10 km.
In order not to compromise battery performance, it is advisable to charge the batteries (or stop off at a service centre
to have them changed) when the remaining runtime indicated in the LCD strip of the dashboard is equivalent to less
than 5 km.
N.B.: Below this threshold, the charge status detection system may not be able to determine the battery
runtime in km with a sufficient degree of accuracy.
BATTERY CHARGER
In order to recharge the batteries with the Lepton DRIVE's built-in battery charger, first set the ignition switch toOFF,
lift the saddle and connect the cable to the mains. Keep the saddle lifted whilst recharging is in progress.
The battery charger detects the presence of the voltage and switches on.
The plug warning light on the dashboard (FIG. 4, pos. 2) comes on and an additional disabling function makes it
impossible for the scooter to be started whilst the battery charger is working.
The DRIVE goes into "stand by" mode and the message "stby" therefore appears on the speedometer LCD strip.
During the charging process, take extreme care as the DRIVE surface may become as hot as 60°C and, therefore,
must not be touched.

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During the charging process the plug warning light on the dashboard (FIG. 4, pos. 2) is flashing, once 80% of the
charging is reached, light remain on, to switch off once the charging is complete.
The life of the batteries and their efficiency improve if recharging is performed frequently.
It is advisable to connect the scooter to the 220 V mains as soon as possible, even after covering rather short
distances, so as to exploit alI the power to the full.
Only charge the batteries with the DRIVE.s specific built-in charger.
Do not use battery chargers designed for other battery types with a different voltage and capacity.
Safety instructions:
ATTENTION: To reduce the risk of electric shock, do not remove cover. Refer servicing to qualified service
personnel.
Battery charger has been designed to provide safety and reliable. It is necessary to observe the following precautions
in order to avoid damage to persons and to the battery charger:
oRead the installation instructions contained in this Manual carefully.
oWhen you use the charger you have care that the fan work well. Don't cover the charger when it work.
oWhen use the charger the saddle must be open and the ignition key switch to OFF
oEnsure all ventilation ports are not obstructed, to avoid the overheating. Do not put the battery charger
near heat sources. Make sure that free space around the battery charger is sufficient to provide adequate
ventilation and an easy access to cables sockets.
oVerify that the available supply voltage corresponds to the voltage that of the battery charger. In case of
doubt, consult a retailer or local Electric Supply Authority.
oFor safety and electromagnetic compatibility, the battery charger has a 3-prong plug as a safety feature,
and it will only fit into an earthed outlet. If you can not plug it in, chances are you have an older, non-
earthed outlet; contact an electrician to have the outlet replaced. Do not use an adapter to defeat the

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earthing.
oTo avoid damaging the power cord, do not put anything on it or piace it where it will be walked on.
If the cord becomes damaged or frayed, replace it immediately.
oIf you are using an extension cord or power strip, make sure that the total of the amperes required by ali
the equipment on the extension is less than the extension's rating.
oDo not try to service the battery charger yourself. Opening the cover may expose you to shocks or other
hazards.
oIf the battery charger does not work correctly or if it has been damaged, unplugged it immediately from the
supply socket and contact a retailer.
oRemember! When the charging operation is finish you have to disconnect the charger
oThe battery charger con not be used to recharge other battery types.
WHEN YOU DON'T USE THE SCOOTER
If you expect not to use the vehicle for a lengthy period, the procedure below must be followed:
1. recharge the batteries completely
2. do not leave the key in the ignition
3. recharge again after 1 month of disuse, and certainly after no more than 3.

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DESCRIPTION OF ALARMS AND POSSIBLE SERVICE REQUESTS
The LCD strip located on the dashboard (FIG. 4, pos. 8) also displays any faults, divided into two categories, "alarm"
and "error".
N.B.: Failure to comply with the instruction given subsequent to alarm and error signals may compromise the safety of
the vehicle and result in the warranty conditions becoming void.
A) "ALARM"CATEGORY
The alarm category indicates temporary faults or malfunctions which, nonetheless, enable the scooter to continue
running, albeit in less than optimal conditions. The message appears for 5 seconds every 20 seconds.
"AlI" 4 (Alarm 4): Engine overtemperature
Indicates that the temperature in the engine has reached 110°C. It is advisable to switch off the vehicle and only start
up again when the .Ali 4. (Alarm 4) message disappears, otherwise, the "Error 5. message may appear, which causes
the vehicle to stop.
B) "ERROR" CATEGORY
The "error" category indicates permanent faults which might even entail the stopping of the vehicle and hence require
the rider to contact a service centre. The message remains on the display until the fault has been remedied.

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Error 1: Overvoltage
The message "Err 1" indicates that the voltage has reached 70 Volts. An overvoltage may cause damage to the
electronic power devices as well as to the batteries. The drive is disabled immediately and the scooter stops (despite
stili being powered). The user can try to resume riding by switching the scooter off and then switching it back on.
Even when the rider manages to make the "Err 1" message disappear with this procedure and hence resume riding, it
is advisable to take the vehicle to a service centre as soon as possible and report the fault encountered. If. once the
scooter has been switched on again (after a few seconds), the "Err 1" message reappears, the scooter must be
switched off and taken to a service centre.
Error 2: Undervoltage
The message "Err 2" indicates that the voltage has dropped below 20 Volts. An undervoltage may cause damage to
the electronic devices. The drive is disabled immediately and the scooter stops (despite stili being powered). The user
can try to resume riding by switching the scooter off (by turning the mechanical key to OFF) and then switching it back
on (by turning the mechanical key to ON). Even when the rider manages to make the "Err 2" message disappear with
this procedure and hence resume riding, it is advisable to take the vehicle to a service centre as soon as possible and
report the fault encountered.
If, once the scooter has been switched on again (after a few seconds), the "Err 2" message reappears, the scooter
must be switched off and taken to a service centre.
Error 5: Engine overtemperature
Indicates that the engine temperature has exceeded 140°C or is lower than -25°C.