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niu Kick Scooter KQi3 User Manual

niu Kick Scooter KQi3
62 pages
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V1.0.0
1
Kick Scooter KQi3
Service Manual
Jiangsu Niu Electric Technology Co. Ltd
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niu Kick Scooter KQi3 Specifications

General IconGeneral
CategoryElectric Scooter
Motor Power350 W
BatteryLithium-ion
TiresPneumatic
Water ResistanceYes
IP RatingIP54
FoldableYes
Max Speed25 km/h
Range40 km
Battery Capacity486 Wh
Charging Time6 hours
Max Load100 kg
LightsLED Headlight, Taillight, and Brake Light
DisplayLED

Summary

Foreword

Maintenance Information

Information and warnings for technical specialists regarding maintenance and repairs.

Customer Safety Notice

Highlights the importance of proper maintenance for customer safety and reliability.

Personal Safety Notice

Emphasizes manual is for professionals and warns of risks from improper procedures.

Maintenance Rules and Procedures

General Maintenance Rules

Lists essential rules for performing maintenance on the scooter.

Cable Connector Inspection Guidelines

Details how to inspect and ensure the safety of cable connectors.

Importance Safety Notes

Scooter Identification

Vehicle Identification Numbers

Locates the Serial Number (SN) and Vehicle Identification Code (VIN) on the scooter.

Controller and Battery Pack Maintenance

Battery Pack Removal

Step to unscrew four hexagon socket screws to remove the battery pack.

Lithium Battery Care and Warnings

Important notes and warnings regarding the care, charging, and storage of the lithium battery.

Controller Removal and Thermal Grease Application

Step to remove the controller, applying thermal grease to the bottom surface.

FOC Controller Functions

Current Limit and Overload Protection

Protects components by limiting current and managing overload conditions.

Voltage and Power Cut-off Protection

Protects motor/battery from voltage issues and stops motor during charging/braking.

Control Loss Protection

Stops motor on Hall sensor failure; includes temperature protection.

Motor Electrical System Details

Motor Operation and Maintenance Notes

General maintenance advice for the motor, including stopping conditions and checks.

Connector Checks and Safety Precautions

Check connectors for issues and follow safety measures for high current/voltage.

Brake Failure Diagnosis and Disassembly

Brake Performance Issues

Details common problems affecting brake performance and their potential causes.

Charger Overview and Safety

Dashboard Fault Code Indicators

Fault Codes and Corresponding Measures

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