Introduction
Thank you for choosing the KERDOM Ergonomic Office Chair KD9070. This manual provides essential information for the safe and efficient use of your new chair. Designed for optimal comfort and support, this chair features a Y-shaped backrest, a multi-dimensional rotating headrest, adjustable armrests, and a breathable mesh design to enhance your sitting experience.
The chair is engineered to provide excellent lumbar and neck support, adapting to your back's natural curvature and promoting correct sitting posture to prevent back pain. Its high-density sponge cushion offers a firm yet soft seating experience, complemented by a high-elasticity nylon mesh backrest that ensures air circulation and prevents discomfort from sweating.
Safety Information
For safe use, adjust the chair according to your comfort and ensure the weight does not exceed the recommended 150 kg (330 lb). Verify that all adjustable mechanisms are securely in place before using the chair. Do not stand on the chair. Avoid placing heavy objects on the backrest or armrests. Keep children away from moving parts during adjustment.
Setup and Assembly
The KERDOM KD9070 office chair is designed for easy assembly. All necessary tools, including an Allen key, and accessories are included. Please follow the integrated instructions provided in the packaging for detailed steps. A general overview of the assembly process is as follows:
- Unpack Components: Carefully remove all parts from the packaging and lay them out on a clean, flat surface. Verify all components are present against the parts list in the included manual.
- Attach Casters to Base: Insert the five casters into the holes on the chair base until they click securely into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the chair base.
- Assemble Seat Mechanism: Attach the seat mechanism to the underside of the seat cushion using the provided screws and Allen key. Ensure the front of the mechanism faces the front of the seat.
- Attach Armrests: Secure the armrests to the seat cushion using the designated screws.
- Connect Backrest to Seat: Attach the backrest to the seat assembly using the remaining screws.
- Attach Headrest: Slide the headrest into its designated slot at the top of the backrest.
- Mount Seat Assembly onto Gas Lift: Carefully place the assembled seat onto the gas lift cylinder, ensuring it is centered and stable.
Operating Instructions and Adjustments
The KERDOM KD9070 chair offers multiple adjustment options to customize your seating experience:
- Seat Height Adjustment: Locate the lever on the right side beneath the seat. Pull the lever up to raise the seat. To lower, remain seated and pull the lever up. Release the lever at the desired height. The gas lift allows for approximately 10 cm (3.9 inches) of height adjustment.
- Backrest Recline and Lock: The chair features a reclining function with a position lock. Pull the recline lever (typically on the left side) outwards to allow the backrest to recline up to 120°. Push the lever inwards to lock the backrest in your preferred position.
- Recline Tension Adjustment: A round knob located beneath the seat (usually at the front) controls the tension of the rocking function. Turn clockwise to increase tension (making it harder to recline) or counter-clockwise to decrease tension (making it easier to recline).
- Headrest Adjustment: The headrest can be adjusted for height and rotation. Gently push or pull the headrest to adjust its vertical position (approximately 3 cm / 1.2 inches). It also rotates up to 15° to provide optimal neck support.
- Armrest Adjustment: The armrests are 3D adjustable. Press the button on the side of the armrest to adjust its height. The armrests can also pivot inwards and outwards, and slide forward and backward to suit your preference.
- 360° Swivel: The chair is designed to swivel 360° for ease of movement and access within your workspace.
Maintenance
Proper maintenance ensures the longevity and performance of your KERDOM KD9070 office chair:
- Cleaning: Wipe clean with a damp cloth. For mesh and fabric parts, use a mild soap solution if necessary, and then wipe with a clean, damp cloth. Avoid harsh chemicals or abrasive cleaners.
- Regular Inspection: Periodically check all screws and bolts to ensure they are tight. Re-tighten if any looseness is detected.
- Caster Care: Keep the casters free from hair, dust, and debris to ensure smooth rolling. Clean them regularly.
- Avoid Overloading: Do not exceed the maximum weight capacity of 150 kg (330 lb).
Troubleshooting
If you encounter any issues with your KERDOM KD9070 office chair, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not adjust height | Gas lift malfunction or lever not engaged. | Ensure the height adjustment lever is fully engaged. If the problem persists, the gas lift may need replacement. Contact customer support. |
| Chair squeaks or wobbles | Loose screws or components. | Check and tighten all assembly screws, especially those connecting the seat, backrest, and armrests. Apply a small amount of lubricant to moving parts if necessary. |
| Casters not rolling smoothly | Debris caught in casters or damaged casters. | Turn the chair over and remove any hair, dust, or debris from the caster wheels. If casters are damaged, they may need replacement. |
| Backrest does not recline or lock | Recline mechanism jammed or tension too high. | Ensure the recline lock lever is disengaged. Adjust the recline tension knob to a lower setting. Check for any obstructions in the mechanism. |
If these solutions do not resolve the issue, please contact KERDOM customer support for further assistance.
Product Specifications
| Feature | Detail |
|---|---|
| Model Number | KD9070 |
| Brand | KERDOM |
| Material | Nylon (frame, mesh), High-density sponge (seat cushion) |
| Color | Black |
| Product Dimensions (Overall) | 58 cm (depth) x 28.5 cm (width) x 58 cm (height) / 55 x 55 x 55 cm (approximate packaged) |
| Product Weight | 15 kg (33 lb) |
| Maximum Weight Capacity | 150 kg (330 lb) |
| Special Features | Ergonomic design, Adjustable armrests, Adjustable headrest, Lumbar support, 360° Swivel, Recline function |
| Backrest Style | Cross backrest (Y-shaped) |
| Care Instructions | Wipe clean with a cloth |
Warranty Information
KERDOM offers a 1-year product warranty from the date of purchase. This warranty covers manufacturing defects and material flaws under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear. Please retain your proof of purchase for warranty claims.
Customer Support
Should you have any questions, concerns, or require assistance with your KERDOM KD9070 office chair, please do not hesitate to contact our customer support team. We are committed to providing excellent service and support.
Contact Information:
Email: support@kerdom.com
Website: www.kerdom.com
Please include your model number (KD9070) and date of purchase in all communications.
