The VELOWAVE GRACE is an e-bike designed for comfortable and assisted riding. This manual provides instructions for setting up, operating, and maintaining the bicycle.

Function Description:

The VELOWAVE GRACE is an electric bicycle that combines traditional pedaling with electric motor assistance. It features a display for monitoring ride data, a thumb throttle for electric propulsion, and a battery for powering the motor and headlight. The bike is equipped with disc brakes for effective stopping power and a torque sensor to provide responsive pedal assistance.

Important Technical Specifications:

Battery: The battery is removable and can be charged either on or off the bike. It has a capacity indicator with green (sufficient), yellow (less than 30%), and red (less than 5%) lights. Charging time is typically 10 to 12 hours with a standard 2A charger.
Motor: The bike utilizes a motor with a Hall signal sensor and phase line.
Brakes: Disc brakes are installed on both the front and rear wheels. The brake levers require specific torque for secure installation (8Nm for the right brake lever).
Pedals: Pedals require significant tightening (25-35Nm torque) and should be re-tightened after initial rides. The left pedal is reverse-threaded.
Handlebar: The handlebar is secured with four screws, requiring a 4mm Allen wrench and 6Nm strength.
Display: The LCD display shows speed data, battery indicator, assist level (0-5), mileage, and can access an information menu (TRIP, ODO, TIME) and a parameter setting menu.
Charger: A 2A charger is provided. A red LED on the charger indicates charging, and a green LED indicates a full charge.

Usage Features:

Power On/Off: The display is turned on and off by pressing the power button. It automatically shuts down after 5 minutes of inactivity.
Assist Level Adjustment: The assist level can be adjusted from 0 (no assist) to 5 (max assist) using the "+" and "-" buttons.
Headlight Control: If installed, the headlight can be switched on or off by pressing and holding the "+" button for 1 second.
Walking Mode: Pressing and holding the "-" button for 2 seconds activates walking mode, propelling the bike at a walking pace. Releasing the button exits this mode.
Information Menu: Pressing the power button for 1 second accesses the information menu, displaying TRIP, ODO, and TIME.
Battery Installation/Removal:
- Installation: Turn the key counterclockwise to release the lock. Seat the bottom of the battery into the receptacle, push the top into the frame until it locks, then turn the key clockwise to secure.
- Removal: Turn off the LCD display. Use the key to release the first lock, then push the plastic tab under the tube to release the second lock. It is important to hold the battery securely as it will drop when released.
Charging:
- On-bike charging: Locate the charge port at the bottom of the downtube, pull out the cover, insert the charger output plug, and connect the input plug to a power supply.
- Off-bike charging: Remove the battery, place it in a clean, flat, room-temperature area, insert the charger output plug into the charge port, and connect the input plug to a power supply. Check the capacity indicator on the battery.
Safety Precautions: Always wear a helmet. Ensure pedals are tight, the front wheel is properly installed, tires are inflated, and all screws are torqued correctly. Do not leave a charging battery unattended for more than 14 hours. Avoid deep discharge to protect battery lifecycle. Do not charge immediately after riding in high temperatures or below 0℃.

Maintenance Features:

Pre-trip Inspection: A pre-trip inspection is recommended before the first rides to ensure all screws and parts are tight and properly fixed.
Gear and Brake Adjustment: Fine adjustment of gears and brakes is necessary.
Battery Storage: If the battery will not be used for a long period, discharge it to 60%-80% capacity, disconnect it from the charger, and store it in a dry, ventilated place without direct sunlight. Charge the battery every two months to maintain a long lifecycle.
Troubleshooting: The manual includes a comprehensive troubleshooting guide for common issues like throttle/pedal assist not working, reduced speed, reduced battery range, battery not charging, and strange noises. This guide lists symptoms, causes (e.g., battery off, low battery power, damaged charger, loose hardware), and solutions (e.g., turn on battery, charge battery, replace charger, tune-up).
Error Codes: A detailed list of error codes (03-35) is provided, along with their descriptions (e.g., Braked, Open Throttle Fault, Motor Hall Signal Fault) and notes for troubleshooting (e.g., check brake lever, reconnect motor cable, allow motor to cool down). For complex issues, contacting technical support is recommended.

VELOWAVE GRACE - Page 15

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