1. Introduction
Thank you for choosing the COMHOMA CH320 Desk Chair. This chair is designed to provide comfort and support for various activities, from office work to relaxation. Its ergonomic features, including a wide seat, pocket coil cushioning, and a 90-130 degree rocking function, ensure a pleasant seating experience. This manual provides essential information for safe assembly, operation, and maintenance of your new chair.
2. Safety Information
- Always follow the assembly instructions carefully. Incorrect assembly can lead to instability and injury.
- Do not stand on the chair. It is designed for sitting only.
- Do not use the chair if any parts are missing, damaged, or worn. Contact customer support for replacement parts.
- Ensure all screws and bolts are tightened securely before use and check them periodically for tightness.
- The maximum weight capacity for this chair is approximately 158.7 kg (350 lbs). Do not exceed this limit.
- Keep children and pets away from the chair during assembly. Small parts can be a choking hazard.
- Avoid exposing the chair to direct sunlight or extreme temperatures, as this may damage the fabric and components.
3. Package Contents
Please verify that all components are present before beginning assembly. If any parts are missing or damaged, please contact COMHOMA customer support.
- Backrest
- Seat Cushion with Mechanism
- Chair Base (Star Base)
- Gas Lift Cylinder
- Casters (5 pieces)
- Assembly Hardware (Screws, Allen Wrench)
- Instruction Manual
4. Assembly Instructions
Follow these steps to assemble your COMHOMA CH320 Desk Chair. It is recommended to assemble the chair on a soft, clean surface to prevent damage.
- Attach Casters to Base: Insert each of 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 Backrest to Seat: Align the backrest with the seat cushion's mounting plate. Secure the backrest to the seat using the provided screws (M6x32) through the designated holes. Ensure they are tightened evenly.
- Attach Seat Assembly to Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder. The tapered end of the gas lift should fit securely into the mechanism under the seat.
Image: Detailed assembly steps for attaching the backrest and seat mechanism.
5. Operating Instructions
5.1 Height Adjustment
To adjust the chair's height, locate the lever on the right side under the seat.
- To raise the seat: Lift the lever while taking your weight off the seat. The seat will rise automatically.
- To lower the seat: Lift the lever while remaining seated. The seat will lower.
Release the lever at your desired height to lock the position. The chair offers approximately 10cm of height adjustment.
5.2 Rocking Function
The CH320 chair features a rocking function that allows the backrest to recline between 90 and 130 degrees.
- To engage the rocking function, pull out the same lever used for height adjustment.
- To lock the chair in an upright position, push the lever back in.
This function provides a comfortable recline for relaxation, similar to a rocking chair.
Image: Illustration of the 90-130 degree rocking and height adjustment features.
5.3 Seating Comfort
The COMHOMA CH320 is designed with a wide seat and a unique "smiling" curved seat surface, along with a split backrest, to provide ergonomic support and comfort. The spacious design allows for various sitting postures, including cross-legged.
Image: Demonstrating comfortable sitting postures in the wide seat.
6. Maintenance
6.1 Cleaning
The chair features a soft velvet fabric. For general cleaning:
- Use a soft, damp cloth with mild soap and water for surface cleaning. Avoid harsh chemicals.
- For deeper cleaning of the backrest interior, unzip the zipper located on the backrest to access the inner padding.
- Vacuum regularly to remove dust and debris.
- Blot spills immediately with a clean, dry cloth. Do not rub.
Image: Details of the velvet fabric and curved seat design.
6.2 Regular Checks
Periodically check all screws and bolts to ensure they remain tight. Re-tighten if necessary to maintain stability and safety.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair is wobbly or unstable. | Loose screws or bolts. | Check and tighten all assembly screws and bolts. |
| Height adjustment not working. | Gas lift cylinder malfunction or lever not engaged correctly. | Ensure the lever is fully engaged. If the issue persists, the gas lift may need replacement. Contact support. |
| Casters not rolling smoothly. | Debris in casters or casters not fully inserted. | Remove any hair or debris from the caster wheels. Ensure casters are fully pushed into the base. |
| Squeaking noises. | Loose connections or friction between parts. | Tighten all screws. Apply a small amount of silicone lubricant to moving parts if necessary, avoiding contact with fabric. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | CH320 |
| Brand | COMHOMA |
| Color | Gray Velvet |
| Material | Velvet Fabric (Non-recycled urethane padding, pocket coil) |
| Overall Dimensions (Approx.) | Width: 62-66 cm, Height: 75-85 cm, Seat Depth: 46 cm, Seat Width: 65 cm |
| Seat Height Adjustment | Approx. 10 cm range (from 41 cm to 51 cm) |
| Rocking Angle | 90° to 130° |
| Weight Capacity | Approx. 158.7 kg (350 lbs) |
| Item Weight | Approx. 9.07 kg (20 lbs) |
| Assembly Required | Yes |
| Certifications | SGS Certified Gas Lift |
Image: Chair dimensions (Width: 62cm, Base Width: 66cm, Height: 85cm, Seat Depth: 46cm, Seat Width: 65cm, Seat Height: 41-51cm).
9. Warranty and Support
COMHOMA is committed to providing high-quality products. For any questions, concerns, or warranty claims regarding your CH320 desk chair, please contact our customer support team. Please have your purchase information and model number (CH320) ready when contacting support.
Contact information can typically be found on the retailer's website or your purchase receipt.
