On-site Operation Guide for Disassembly and Packaging of Faulty Inverters

On-site Operation Guide for Disassembly and Packaging of Faulty Inverters

1. Purpose

2. Disassembly Process

2.1 Disassembly Procedure

Step 1: Power Off and Disconnect

• Shut down the inverter via the front panel or monitoring system.
• Disconnect the power supply in the following order: 
  1. AC side first
  2. DC side second

Step 2: Remove Terminal Cables

• Remove terminal cables following the same sequence as power disconnection: 
  • AC cables first, then DC cables.
• Take clear photos of all terminal connections before removal to ensure correct reconnection if needed.

Step 3: Remove the Back Mounting Plate

• Use an electric screwdriver or torque screwdriver to loosen and remove the screws from the back mounting plate.

Step 4: Place the Unit on the Ground

• Carefully remove the inverter from its mounting position.
• Place the unit flat and slowly on a stable, level surface.

2.2 Disassembly Safety Notes

• Always follow the sequence: Power off → Disconnect power → Verify no voltage.
• Live disassembly is strictly prohibited.
• Never disconnect DC power before AC power.
• Handle the inverter gently throughout the process.
• Avoid any impact or contact with the terminal surface.
• Do not use force during disassembly.
• All faulty inverters must be returned using the original packaging or equivalent protective packaging approved by after-sales support.

3. Packaging Process

3.1 Packaging Procedure

Step 1: Prepare the Carton

• Use the original inverter packaging whenever possible or the one of the replacement inverter.
• If unavailable, use a carton confirmed by after-sales support to provide equivalent protection.
• Place the carton on a flat, stable surface.

Step 2: Add Bottom Padding

• Place a layer of protective padding at the bottom of the carton.
• Acceptable materials include foam inserts, EPS/EPP foam, molded or non-molded foam, or air cushion bags.
  

Step 3: Place the Faulty Inverter

• Carefully place the inverter flat and centered inside the carton.

Step 4: Add Top and Side Padding

• Add padding around all sides and on top of the inverter.
• Ensure the padding height is level with the top edge of the carton.
  

Step 5: Seal the Carton

• Seal the carton using packing tape.
• Apply tape in an “H” sealing pattern to ensure carton integrity.
  
  

3.2 Packaging Notes

• The carton must be free from visible damage or deformation.
• Top and bottom padding thickness should be similar to ensure full protection.
• Handle the inverter gently during packaging to prevent secondary impact or damage.

4. Important Reminder

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