CAROMA Electric Scooter User Manual

6.1 Install kickstand

• Untighten the screw on kickstand with hex wrench.
• Install the kickstand at the edge of pedal and fasten it with hex wrench.
• Ensure the kickstand is fixed firmly.

6.2 Install handlebar vertical pipe

• Put the vertical pipe vertically and lock the rubber ring and fixed structure in the middle of vertical pipe.
• Install the scooter in straight vertical pipe and lock the fixed structure.
• Ensure the handlebar structure is fixed and scooter does not shake.

6.3 Install saddle seat

• Insert saddle seat pipe at the back of saddle and fasten it with 14# wrench.
• Insert the well-assembled saddle into bar receiver, lock it with fixed structure, and adjust its position and height based on your riding habits.

6.4 Install luggage basket

• Remove the 4 mounting screws for the luggage basket above the rear fender.
• Adjust the luggage basket and secure it in place with the screws that were just removed.

6.5 Adjust the angle of brake rod, instrument, gear lever, accelerator and bell on the handlebar, and tighten them with tools.

Congratulations! You have assembled the whole electric scooter already.

7.1 Instrument

7.1.1 Introduction to Instrument Interface.

SPEED: Current Speed

STAT: Zero-start

NON: Non-zero start

MAX: Max. speed

AVG: Average speed

scooter boost gear adjustment: Gear 1, 2 and 3

ODO: Total mileage (unit: mile and km)

TRIP: Single mileage

VOL: current voltage,

TM: Running time

ERR: Fault code

Display of electric quantity

7.1.2 Introduction to instrument functions

Operation process

• Press and hold power button for 2 s to start it up. The default value is Gear "1".
• To increase the electric and pedal assistance level, press “i” button. Gear "2" is the second level.
• Gear "3" is the maximum speed, indicating the maximum electric and pedal assistance level.

7.1.3 Speed introduction

7.1.4 Introduction to instrument settings

• P01: Backlight brightness, Level 1 is darkest and Level 3 is brightest
• P02: Mileage unit, 0: km; 1: mile
• P03: Voltage grade: 24V, 36V, 48V and default 36V
• P04: sleep time: 0, no sleep; Other numbers are sleep time, range: 1-60; in minutes
• P05: Boost gear: 0: Gear 3 mode
• P06: Wheel diameter: Unit, inch; accuracy: 0.1
• P07: Number of speed measuring magnets: Scope: 1-255
• P08: Speed limit: Range 0-100km/h, 100 means no speed limit
• Communication status (controller control): The input data here indicates the maximum operating speed of the scooter: For example, if entering 25, it means the maximum operating speed of the scooter will not exceed 25km/h; the drive speed is maintained at that set value
• P09: Zero-start, non-zero-start settings, 0: Zero-start; 1: Non-zero-start settings
• P10: Settings of drive mode 0: Booster drive (the output power is determined by the boost gear, and the rotary handle is invalid at this time) 1: Electric drive (via knob drive; power assist gear is not invalid in such case) 2: Coexistence of power drive and electric drive (both power drive and handle drive are valid)
• P11: Settings of assisting sensitivity 1-24
• P12: Settings of assisting start strength 0-5
• P13: Settings of power magnetic steel disc type (three types of 5, 8 and 12 magnetic steel)
• P14: Settings of controller current limit default 12A and range: 1-20A
• P15: Undervoltage value of controller
• P16: ODO clear settings Press and hold the plus key for 5 seconds to clear ODO
• P17: 0: Cruise not enabled, 1: Enable cruise; Auto cruise is optional (valid for Protocol 2 only)
• P18: Display speed scaling range: 50%~150%
• P19: Gear 0 enable bit, 0: Include Gear 0, 1: Not include Gear 0
• P20: 0: Protocol 2 1: 5S protocol 2: Standby 3: Standby

7.1.5 Introduction to buttons

• Press and hold power button under shutdown status to start it up; after starting up, press “i” button, the interface will switch between ODO, TRIP, VOL, TM and ERR.
• Press and hold power button under startup state, press “i” button and adjust the boost gear;
• Press and hold “+” and “i” buttons to enter mode settings. In the interface of settings, press “i” button to switch parameters, press and hold “+” and “i” buttons to switch functions of adding and subtracting functions of “i” button.

7.2 Lamp

• Press and hold “i” button for 2 s, and the front lamp will be on by default. With the front lamp on, press and hold “i” button for 2 s and the front lamp will be off by default.

7.3 Battery

7.3.1 Instructions for battery charging

7.3.1.1 After connecting the input and output ends of charger, the red indicator will be ON. The battery is fully charged if the indicator turns green.

7.3.1.2 Standard charging time: Charge according to the time of special charger. The ambient temperature is about 25 °C. The charging time may vary depending on battery capacity, charger specifications, and ambient temperature.

7.3.2 Key positions of battery

Know the key port and battery power supply position before riding. As shown in the picture below, the key port aligns to the key position 1 and is consistent with the ON icon. At key position 1, the battery is at the "ON" position, the battery is locked to the frame, and the key cannot be removed.

7.4 Startup

7.4.1 When the battery is locked on the frame, turn on the battery switch. Then, press and hold “power button” of the instrument panel for 2 s to power on. At this time, the electric bike is at the power-on state.

7.4.2 Power assist drive mode: Press and hold “+” and “i” button to enter into mode settings. Press “i” button on the interface of settings to switch P10 parameters, press and hold “+” button to switch functions of adding and subtracting of “i” button, set the number to 0 that means power drive.

7.4.3 Electric drive mode: Press and hold “+” and “i” buttons to enter mode settings. Press “i” on the interface of settings to switch P10 parameters, press and hold “+” button to switch functions of adding and subtracting of “i” button and set the number to 1 that means electric drive.

7.4.4 Coexistence of power assist and electric drive: Press and hold “+” and “i” buttons to enter mode settings. Press “i” button on the interface of settings to switch P10 parameters, press and hold “+” button to switch functions of adding and subtracting of “i” buttons, and set the number to 2 that means co-existence of the power drive and the electric drive.

7.5 Adjustment and use of brake

7.5.1 Adjustment of Brake

Before aligning the mechanical disc brake, make sure that the brake cable is properly inserted into the lock lever. If the disc rotor is bent or damaged, replace the rotor first.

If the brake is not flexible, loosen the fixing bolt of the brake cable, shorten the braking distance of the brake cable, and then tighten the bolt.

Alternatively, when the brake is too sensitive, increase the distance of brake cable.

If the rotor is always rubbing against the brake pad or has excessive clearance, loosen the two centering adjustment screws, but do not remove them. Turn the wheel slowly and check the space between the rotor and the brake pad; adjust the position of the brake pad and rotor to avoid friction between the rotor and pad. After adjustment, tighten the screws.

7.5.2 Use of Brake

The brake is used for speed control instead of stopping the scooter alone. The maximum braking force of the wheel is available before the wheel "lock" (still) and subsequent slip. Once tires skid, most of braking power and any control over scooter will be lost. You must practice braking and stopping gently without blocking wheel. This technique is called progressive brake modulation.

• Push the lock lever towards the handlebar to gradually increase the braking force.
• If the wheels get stuck, reduce the braking force so wheels can continue to spin without being stuck.

7.6 Charging: Safe operation guide

Please follow the instructions for use. Otherwise, user shall bear all the consequences arising therefrom.

Please use the original special charger instead of any other chargers. Pay attention to the type of battery that can be charged by charger and voltage. Mixed use is forbidden. The charging time shall not exceed 12 hours and the charging current shall not exceed 3A.

7.6.1 Insert the charger probe into the charger port on the electric bike battery, as shown in the figure.

7.6.2 Insert the tip of the wire into the battery charger.

7.6.3 Insert the AC power plug into the AC power socket.

7.6.4 The red indicator will be on and in red until the battery is fully charged. After the battery is fully charged, the indicator will turn green.

8.1 Precautions for riding

Damage may be caused and affect the scooter's performance during riding or parking. Therefore, pay attention to the followings before riding:

• Check whether all parts of the scooter are installed appropriately and are damaged, and check whether all screws are tightened.
• Check whether the brakes are in good condition. Confirm the brake before using the scooter, whatever the scenario.
• Check whether the tires are in good condition and whether the front and rear tire pressure is normal. According to the standard, the air pressure of the front and rear tires should reach 35PSI-65PSI (280KPA-450KPA).
• Check whether the lock lever is fixed. If it is loose, please tighten it.
• Please check whether the battery is fully charged before riding each time.
• After starting the scooter, slowly accelerate to avoid excessive starting current and electric energy waste due to instantaneous acceleration. It is suggested to start the scooter with the assistance of pedal.
• On the basis of ensuring safety, try to ride at an economic speed. Try to avoid frequent braking to save electric energy.
• Find a suitable open and flat indoor or outdoor place (at least 4m*20m) to practice riding.
• Please do master the riding conditions nearby so as not to be disturbed by cars, pedestrians, pets, scooters or other obstacles.
• Please find a skilled assistant who is familiar with riding an electric scooter and understands all the precautions and riding methods in this manual.
• Do not test this scooter on a slippery ground.
• Please wear a helmet or other protective equipment to avoid injury.
• Please increase the braking distance on rainy days, because dampness will slow down the braking response. After riding, clean and dry the scooter and store it in a safe place.
• Do not use this product under extreme weather conditions (such as heavy rain, snow or freezing weather).
• Always lock the battery with the attached battery key and remove the key before riding the scooter.
• The routine inspection before and after riding each time will help you maintain optimum electric scooter performance and find potential problems before they cause safety problems.

8.2 Precautions for riding

To ensure your riding safety and riding experience, please do observe the following requirements when using the product:

• Please wear the helmet and the protective equipment while riding.
• Do not climb slopes over 30°, and do not accelerate or decelerate sharply on slopes.
• Be careful of obstacles and slippery roads. Do not ride on grass or cobblestones.
• Do not ride in water deeper than 30mm.
• Do not immerse the scooter in water.
• Do not ride to go up and down.
• Do not ride the scooter on highway.
• The scooter is a means of transportation for an individual and cannot be used by multiple persons at the same time.
• Please pay attention to the obstacles above your head while riding.
• Do not wear headphones and use cell phones while riding.

8.4 Precautions for battery disposal

• Recycle or discard the battery in an environment-friendly way.
• Do not throw the battery into fire. Otherwise, it may explode or leak.
• Do not discard the battery in ordinary household garbage.

9.1 Periodic maintenance and self-inspection

• Check whether the front and rear wheel screws are tightened.
• Check whether the tread of cover tire is worn or cracked, whether the front and rear tire pressure is suitable and whether the driving system is unblocked.
• Check whether the joints are normal: Whether the braking wire fastener can be used in lubricating state.
• Regularly check whether the brake functions well. Increase the braking distance on rainy/snowy days or during downhill riding.
• Lubrication is an important part for maintaining an electric scooter. The front axle, center axle, flywheel and pivot point of the front fork shock absorber shall be scrubbed semiannually. Apply grease or engine oil based as required.
• Adjustment of the brake system: Loosen the screws on the brake wire fixed seat, then tighten or loosen the brake wire, so that the average distance between the two sides of the pads and the disc is 0.3mm-0.5mm. Finally, tighten the screws.

9.2 Instructions for maintenance and cleaning

• To avoid accident due to wetting of internal electronic parts and wires, do not wash the scooter with water.
• Do not fill oil into front/rear brake, rim or tire.

9.3 Battery maintenance

• After riding for a certain distance every day, charge the battery timely; otherwise, it may reduce the service life.
  • Charge the battery when the battery level is 30%~ 50%.
  • Make sure the battery is not fully discharged (deep discharge).
• If the scooter will be left idled for a long time (store the battery for more than two months), please charge it regularly to maintain your battery. Otherwise, the service life of battery will be reduced or battery may be damaged. Please perform the following operations:
  • Fully charge the battery and remove it then.
  • Make sure there is no clear damage to the battery
  • Please fully charge the battery before storing it for a long time.
  • Store the battery at a dry, low-humidity place.
  • Keep the temperature at 5°C~20°C.
  • Protect the battery from extreme temperature fluctuations. Do not expose the battery to direct sunlight or heat.
  • Charge the stored battery for every 2 months.
• It is normal if the battery capacity decreases slowly during using. The battery power cannot be restored when reaching the final life cycle.