1. Important Safety Information
Please read all instructions carefully before assembly and use. Retain this manual for future reference.
- Maximum Weight Limit: The KERDOM Ergonomic Desk Chair Model 933-C has a maximum weight capacity of 250 lbs (113 kg). Do not exceed this limit to prevent damage or injury.
- Assembly Warning: This product requires assembly. Follow the provided instructions precisely to ensure safe and proper assembly. Incorrect assembly can lead to instability and potential injury.
- Regular Inspection: Periodically check all bolts, screws, and connections to ensure they are tight and secure. Retighten as necessary.
- Proper Use: Use the chair only for its intended purpose as an office or desk chair. Avoid standing on the chair or using it as a step stool.
- Children: Keep children away from the assembly area. Small parts may pose a choking hazard.
2. Product Overview
The KERDOM Ergonomic Desk Chair Model 933-C is designed for comfort and functionality in office and home environments. It features an ergonomic design, breathable mesh back, adjustable height, and convenient flip-up armrests for space-saving.
Image: The KERDOM Ergonomic Desk Chair Model 933-C in use at a desk, showcasing its design and functionality.
Image: Multiple perspectives of the KERDOM Ergonomic Desk Chair Model 933-C, highlighting its overall design and comfort features.
Key Features:
- Ergonomic Design: Provides support for the back, hips, and hands, with appropriate lumbar support.
- Breathable Mesh: The backrest and cushion utilize high-quality mesh for ventilation, shape retention, and elasticity.
- Adjustable Height: Seat height can be easily adjusted to suit individual preferences.
- Flip-up Armrests: Armrests can be rotated upwards by 90 degrees, allowing the chair to be stored under a desk to save space.
- Tilt Reclining: The chair offers a tilt function from 90 to 120 degrees for relaxation.
Image: A visual comparison of incorrect and correct sitting postures, demonstrating the ergonomic back design of the KERDOM chair and its lumbar support.
Image: A detailed view of the breathable and flexible mesh material used for the chair's backrest, designed to keep the user cool and comfortable.
3. Specifications
| Feature | Specification |
|---|---|
| Brand | KERDOM |
| Model Number | 933-C |
| Colour | Black |
| Product Dimensions | 55 x 55 x 55 cm (approximate); 49D x 25W x 49H Centimetres (approximate) |
| Material | Mesh, Alloy Steel (Frame) |
| Item Weight | 10 kg |
| Special Features | Adjustable Height, Arm Rest (Flip-up), Ergonomic, Reclining, Space Saving |
| Back Style | Mesh Back |
| Maximum Weight Capacity | 250 lbs (113 kg) |
Image: A comprehensive diagram illustrating the various dimensions of the KERDOM Ergonomic Desk Chair Model 933-C, including seat height, width, and backrest height.
Image: An infographic detailing various quality tests performed on the chair, such as armrest bearing, swivel, seat durability, caster rolling, recline, and backrest pressure tests.
4. Assembly Instructions
The KERDOM Ergonomic Desk Chair Model 933-C is designed for straightforward assembly. A detailed installation video is typically available in the product's online listing or related video sections. Please refer to it for visual guidance.
General Assembly Steps:
- Unpack Components: Carefully remove all parts from the packaging and lay them out on a clean, soft surface to prevent scratches. Verify all components are present against the parts list (usually included in the box).
- Attach Casters to Base: Insert the five casters into the holes at the end of each leg of the chair base. Push firmly until they click into place.
- Insert Gas Lift: Place the gas lift cylinder into the center hole of the assembled chair base.
- Attach Seat Plate to Seat Cushion: Secure the seat plate mechanism to the underside of the seat cushion using the provided screws. Ensure the front of the seat plate faces the front of the seat cushion.
- Attach Armrests to Seat Cushion: Fasten the armrests to the sides of the seat cushion using the designated screws.
- Attach Backrest to Seat Cushion/Armrests: Connect the backrest to the seat cushion or armrests, depending on the design, using the appropriate screws.
- Connect Seat Assembly to Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder, ensuring it is centered and securely seated.
- Test Functionality: Once assembled, test all adjustable features (height, tilt, armrests) to ensure they operate correctly and safely.
5. Operating Instructions
5.1. Adjusting Seat Height
To adjust the seat height:
- To Raise: While seated, lift the lever located under the right side of the seat. The seat will rise. Release the lever at the desired height.
- To Lower: While seated, lift the lever located under the right side of the seat. The seat will lower. Release the lever at the desired height.
Image: An illustration demonstrating the mechanism for adjusting the seat cushion height by lifting a lever, indicating an 8cm adjustment range.
5.2. Adjusting Tilt and Recline
The chair offers a tilt function for reclining and a tension adjustment knob.
- To Recline: Pull the lever (often the same one used for height adjustment, or a separate one) outwards to unlock the tilt mechanism. Lean back to recline.
- To Lock Upright: Push the lever inwards to lock the chair in an upright position.
- Tilt Tension Adjustment: Rotate the round knob located under the seat (usually at the front) to adjust the resistance of the tilt mechanism. Turn clockwise to increase tension (harder to recline), and counter-clockwise to decrease tension (easier to recline).
Image: A visual guide to the chair's 90 to 120-degree tilt reclining feature, showing the lever for locking/unlocking and the knob for adjusting tilt tension.
5.3. Using Flip-up Armrests
The armrests can be flipped up to save space.
- To Flip Up: Gently lift each armrest upwards until it locks into a vertical position (90-degree angle).
- To Flip Down: Gently pull each armrest downwards until it returns to its horizontal position.
Image: A visual representation of the chair's curved 90-degree rotating armrests, showing how they can be flipped up to save space.
Image: A comparison showing the chair with armrests down and then flipped up, illustrating how this feature allows the chair to be stored closer to the desk, saving approximately 1 square meter of space.
6. Maintenance
Proper maintenance ensures the longevity and continued performance of your KERDOM Ergonomic Desk Chair.
- Cleaning: Wipe clean with a damp cloth. For mesh areas, a soft brush can be used to remove dust. Avoid harsh chemicals or abrasive cleaners, as these can damage the material.
- Regular Checks: Periodically inspect all screws and bolts. Tighten any loose fasteners to maintain stability and safety.
- Caster Care: Keep casters free of hair and debris to ensure smooth movement.
7. Troubleshooting
If you encounter any issues with your KERDOM Ergonomic Desk Chair, refer to the following common solutions:
- Chair Squeaks: Check all screws and bolts and tighten them. A small amount of silicone lubricant can be applied to moving parts if the squeaking persists, avoiding contact with fabric.
- Chair Does Not Adjust Height: Ensure the gas lift lever is fully engaged or disengaged as required. If the gas lift is faulty, it may need replacement. Contact customer support.
- Casters Not Rolling Smoothly: Remove any hair, dust, or debris from the caster wheels. If a caster is damaged, it may need replacement.
- Chair Feels Unstable: Verify that all assembly screws are securely tightened. Ensure the chair is on a flat, even surface. Do not exceed the maximum weight limit.
If these steps do not resolve the issue, please contact KERDOM customer support for further assistance.
8. Warranty and Support
For information regarding the product warranty, please refer to the warranty card included with your purchase or visit the official KERDOM website. For any questions, concerns, or assistance with your KERDOM Ergonomic Desk Chair Model 933-C, please contact KERDOM customer support through their official channels.
Contact Information: Please refer to the contact details provided on the KERDOM official website or your purchase documentation.
