This document serves as the Maintenance Manual for the LGMG A14JE Mobile Elevating Work Platform (MEWP). It provides essential information for the safe operation and maintenance of the machine, emphasizing the importance of thorough understanding by all personnel involved.
Function Description
The LGMG A14JE is a Mobile Elevating Work Platform designed to provide a safe and stable elevated workspace for various tasks. Its primary function is to lift personnel and their tools to working heights, enabling access to areas that would otherwise be difficult or unsafe to reach. The platform is equipped with a boom structure that allows for vertical and horizontal reach, and a basket for personnel. The machine is electrically powered, indicating a focus on quieter operation and reduced emissions, making it suitable for indoor and environmentally sensitive work sites.
Important Technical Specifications
The manual specifies the following general technical details:
- Model: A14JE
- Document Format: 880*1230 mm, 16 format, 8 printed sheets.
- First Edition: December 2021.
- System Voltage: 48V (as indicated in the electrical schematic diagram).
While specific performance metrics like maximum working height, horizontal outreach, and platform capacity are not explicitly detailed in the provided excerpts, the inclusion of hydraulic and electrical schematics, along with maintenance schedules for various components, implies a robust design capable of supporting significant loads and reaching considerable heights. The presence of a "LOAD SENSOR" in the electrical schematic further suggests safety features related to platform capacity.
Usage Features
The LGMG A14JE is designed for ease of operation and safety, incorporating several features to ensure efficient and secure use:
- Control Systems: The electrical schematic shows both a "PLATFORM CONTROL BOX" and a "GROUND CONTRAL PANEL," indicating dual control capabilities. This allows the operator to control the platform from either the basket or the ground, enhancing flexibility and safety during operation and rescue scenarios.
- Joystick Control: The presence of "JOYSTICK 1" and "JOYSTICK 2" suggests intuitive proportional controls for various movements, including drive, steer, and boom functions.
- Safety Features:
- Warning System: The manual highlights the importance of safety with a prominent "AWarning" section, emphasizing the risk of fatal accidents or personal injury if instructions are not followed. It also includes "Danger," "Warning," and "Notice" signal words to identify different levels of safety information.
- Overload Protection: The electrical schematic includes an "OVERLOAD LIGHT," indicating a system to alert operators when the platform's load capacity is exceeded, preventing unsafe operation.
- Tilt Sensor: A "TILT" indicator and a "(BUILT-IN TILT SENSOR)" are present in the electrical schematic, suggesting a system to detect and warn of excessive machine tilt, which could lead to instability.
- Emergency Pump: An "EMERGENCY PUMP" is listed, providing a means to lower the platform in case of main power failure or other emergencies.
- Foot Switch: A "FOOT SWITCH" is typically used as a dead-man switch, requiring the operator to press it to enable platform functions, ensuring active operator presence.
- Mobility: As a "Mobile Elevating Work Platform," the A14JE is designed for mobility, allowing it to be driven to different work locations. The electrical schematic shows controls for "DRIVE," "STEER," "FWD/REV," "RIGHT," and "LEFT," indicating comprehensive drive capabilities.
Maintenance Features
The manual provides a detailed framework for maintaining the A14JE, crucial for ensuring its longevity, safety, and optimal performance:
- Maintenance Schedule: The document outlines specific maintenance intervals for various components, categorized by operating hours (100h, 250h, 1000h, 2000h) or time (annually, quarterly, biennial). This structured approach helps prevent premature wear and unexpected failures.
- Component-Specific Checks:
- Drive Hub Oil: Inspection of drive hub oil level is required, with specific instructions for checking and refilling.
- Hydraulic Oil: Regular inspection of hydraulic oil level and leakage is mandated (every 8h or daily). The manual also specifies replacement intervals for hydraulic oil (every 1,000h or annually) and filters (suction and return filters every 1,000h or annually, or after the first 500h). A critical warning is given regarding hydraulic oil replacement: if not replaced after two years, it must be tested quarterly.
- Battery: Battery checks are required every 250h or two months. This includes inspecting cable security, corrosion, electrolyte levels, and adding distilled water if necessary. Warnings about electric shock and corrosive electrolyte are highlighted.
- Harness: Electrical wiring is to be checked for burning, wear, corrosion, extrusion, and looseness, and harness joints should be coated with insulating grease.
- Qualified Personnel: The manual explicitly states that quarterly, annual, and biennial maintenance must be performed by "trained and qualified" personnel, underscoring the complexity and safety-critical nature of these tasks.
- Pre-Operation Checks: If the machine has been idle for more than three months, a quarterly maintenance must be performed before operation, ensuring it is in safe working condition.
- Documentation: The manual emphasizes that it "must be kept with this machine at all times," ensuring that maintenance and operation instructions are always available to personnel.
- Support Information: Contact details for Lingong Group Jinan Heavy Machinery Co., Ltd. are provided for technical service, accessories sales, and general inquiries, facilitating access to expert support and spare parts.
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