Assembly and Disassembly of Office Chairs

The assembly and disassembly of office chairs include two parts: installation and disassembly. Specific operations should follow standardized procedures to ensure safety and functionality.

Installation Steps

1. Component Identification
   Office chairs typically consist of components such as chair legs, casters, bases, seats, gas cylinders, backrests, armrests, and headrests. Before installation, verify that all parts are complete and inspect the gas cylinder (pneumatic lifting device) for airtightness to avoid using parts that are leaking or damaged.

2. Assembly Process

   • Chair Legs and Casters: Insert each caster vertically into the mounting holes of the chair legs, ensuring that the catches are fully locked to prevent loosening and unstable sliding.
   • Gas Cylinder Installation: Insert the gas cylinder vertically into the center hole of the chair legs, maintaining an upright position to avoid uneven force distribution due to tilting.
   • Seat and Base: Secure the base to the bottom of the seat with screws, ensuring that the screws are tightened to the specified torque to prevent loosening after prolonged use.
   • Backrest Connection: Attach the backrest to the seat using preset slots or screws, ensuring that there are no gaps at the connection points to prevent wobbling.
   • Overall Assembly: Vertically fit the seat assembly over the top of the gas cylinder. A clicking sound indicates that it is properly installed. Finally, install the armrests and headrest, adjusting them to a comfortable angle.

Disassembly Steps

1. Safety Preparation
   Before disassembly, ensure that the pressure in the gas cylinder has been fully released (by repeatedly pressing the lifting lever to the lowest position and holding it for more than 10 seconds). If the pressure is not released, forced disassembly may cause the gas cylinder to suddenly pop out and injure someone.

2. Step-by-Step Disassembly

   • Seat and Gas Cylinder Separation: First, detach the backrest, then raise the gas cylinder to its highest position. Hold the seat firmly with one hand while continuously pressing the lifting lever and rocking it left and right with the other hand until the seat detaches from the gas cylinder.
   • Gas Cylinder and Chair Leg Separation: Invert the chair legs and lightly tap the bottom of the gas cylinder with a rubber mallet (if a rubber mallet is not available, place a wooden board between the gas cylinder and the chair legs before tapping) to avoid deforming the chair legs by direct tapping.
   • Disassembly of Other Components: Reverse the installation order, using a screwdriver to loosen the screws to separate components such as armrests and headrests. All screws should be stored in sealed bags by category and labeled with the corresponding components for easy reassembly later.

Precautions

• Professional Handling: The gas cylinder contains high-pressure nitrogen gas. Disassembly by non-professionals may pose risks of explosion or puncture. If the gas cylinder needs to be replaced, it is recommended to contact professional movers or furniture repair services in the Chengdu area.
• Long-Term Use: If an office chair has been in use for more than 5 years, even if it is not damaged, it is advisable to regularly inspect the airtightness of the gas cylinder to prevent chronic air leakage that could lead to sudden collapse.
• Moving Recommendations: In the Chengdu area, professional movers can be booked through local life service platforms. They have professional tools and experience to efficiently complete the assembly and disassembly tasks.