How to Pressurize an Office Chair

Pressurizing an office chair is usually achieved by operating the pneumatic device, with specific methods varying depending on the chair type. Here are the common types and operating steps:

1. Pneumatic-rod office chairs
These chairs achieve height adjustment through an internal pneumatic rod, with the core components being the adjustment valve or knob. When operating, maintain the correct sitting posture: keep your feet flat on the ground, your thighs parallel to the ground, and your knees at a 90-degree angle.

• Rising operation: While sitting on the chair, gently lift the adjustment valve or knob upwards to trigger the internal mechanism of the pneumatic rod. At this point, the control valve opens, and the nitrogen pressure circulates within the piston, pushing the pneumatic rod to extend and raising the chair. For some models, you need to twist the control lever for height adjustment in a clockwise direction, and the air pressure will raise the chair to its maximum height.
• Lowering operation: This should be done under a loaded condition (e.g., while sitting on the chair). Press the adjustment valve downwards or twist the control lever counterclockwise to release the nitrogen pressure and lower the chair.

2. Wire-controlled chassis office chairs
These chairs achieve height adjustment through the control lever or button on the wire-controlled chassis, with more intuitive operation:

• Rising: Press the control lever or button upwards to trigger the internal mechanical structure of the chassis, causing the pneumatic rod to extend and the chair to rise.
• Lowering: Press the control lever or button downwards to make the pneumatic rod contract and the chair lower.

3. Specially designed office chairs
Some brands (such as Okamura computer chairs) adopt a simplified design, making operation more convenient:

• Height adjustment: Simply press the button under the seat to freely adjust the seat height up and down without complex operations.

Precautions

• Operating specifications: The chair should be unoccupied when rising and loaded when lowering. Avoid violent adjustment to prevent damage to the pneumatic rod or connecting parts.
• Troubleshooting: If the chair cannot be raised or lowered, possible reasons include:
  • Incorrect operation (e.g., not unoccupied when rising);
  • The locking mechanism is too tight, and the screw tightness needs to be adjusted;
  • Loose or damaged screws or connecting parts, which need to be tightened or replaced;
  • Pneumatic rod failure (e.g., air leakage), and professional repair is required;
  • The chair is not installed correctly and needs to be reassembled.
• Safety first: When disassembling the pneumatic rod, be aware of the explosion risk (the pneumatic rod is filled with high-pressure nitrogen). After adjustment, be sure to test the stability of the seat to ensure there is no shaking or abnormal noise.

Correct operation can extend the service life of the office chair. If the problem persists, it is recommended to contact the manufacturer or a professional repair technician.