Introduction
Thank you for choosing the IRIS OHYAMA OFC-MBH Mesh Back High Back Chair. This manual provides essential information for the safe assembly, operation, and maintenance of your new chair. Please read these instructions carefully before use and retain them for future reference.
The OFC-MBH chair is designed for extended desk work, featuring a breathable mesh back, an S-shaped high backrest for ergonomic support, and a rocking function for comfort. It also includes protective casters suitable for various floor types.
Image: The IRIS OHYAMA OFC-MBH Mesh Back High Back Chair in an office environment, showcasing its design and suitability for desk work.
Safety Information
- This product features a locking function and an elevation (height adjustment) function.
- Do not exceed the maximum weight recommendation of 102 kg (220 lbs) when using the chair.
- Operate the lifting and lowering functions carefully to prevent injury or damage.
- Ensure all bolts and screws are securely tightened after assembly and periodically check for looseness.
- Keep hands and fingers clear of moving parts during adjustment.
- Do not stand on the chair or use it as a step stool.
Assembly Instructions
The IRIS OHYAMA OFC-MBH chair requires customer assembly. A hex wrench is included for your convenience. Please follow these general steps for assembly:
- 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 according to the parts list (not provided in this document, refer to packaging).
- Attach Casters to Base: Insert the five casters into the holes at the end of each leg of the chair base until they click securely into place.
- Insert Gas Lift: Place the gas lift cylinder into the central hole of the assembled chair base.
- Attach Seat Plate to Seat: Secure the seat plate mechanism to the underside of the seat cushion using the provided screws and hex wrench. Ensure the front of the seat plate faces the front of the seat.
- Attach Armrests: Fasten the armrests to the seat cushion using the designated screws.
- Attach Backrest: Connect the backrest to the seat assembly, typically by aligning the mounting holes and securing with screws.
- Connect Seat Assembly to Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder, ensuring it is centered and stable.
- Final Check: Once assembled, sit on the chair to ensure the gas lift is properly seated. Test all functions (height adjustment, rocking) to confirm correct assembly.
For detailed visual instructions, please refer to the assembly diagram included with your product packaging.
Operating Instructions
1. Height Adjustment
To adjust the chair's height, locate the lever on the right side beneath the seat. To raise the seat, lift the lever while taking your weight off the chair. To lower the seat, lift the lever while seated. Adjust to your desired height and release the lever to lock it in place. The seat height can be adjusted from approximately 44 cm to 52 cm.
Image: Illustration of the chair's height adjustment, demonstrating the range from 44cm (low) to 52cm (high) to suit individual preferences and desk heights.
2. Rocking Function
The chair features a rocking function, allowing the backrest to recline up to approximately 15 degrees. This function is ideal for taking short breaks and changing posture during long periods of sitting. To activate or deactivate the rocking function, use the lever located on the left side beneath the seat. Push the lever inwards to lock the chair in an upright position, and pull it outwards to enable rocking.
Image: Visual representation of the chair's rocking mechanism, showing the backrest reclining up to 15 degrees for comfort and posture changes.
3. S-shaped High Backrest
The chair's S-shaped high backrest is designed to conform to the natural curve of your spine, providing excellent support from the lower back to the neck. This ergonomic design helps reduce strain during prolonged use.
Image: A user demonstrating the ergonomic S-shaped high backrest, highlighting its support for the spine and neck during work.
4. Breathable Mesh and Protective Casters
The entire chair features a breathable mesh material, preventing stuffiness and ensuring comfort even during long periods of sitting. The casters are made from soft polyurethane, designed to protect various flooring types, including carpet and hard floors, from scratches.
Image: Detail view of the chair's breathable mesh fabric and the protective polyurethane casters, designed for smooth movement and floor protection.
Maintenance
- Cleaning: Wipe clean with a damp cloth. For stubborn stains on the mesh or fabric, use a mild soap solution and a soft brush, then wipe with a clean, damp cloth and allow to air dry. Avoid harsh chemicals or abrasive cleaners.
- Caster Care: Periodically check casters for accumulated hair or debris and clean them to ensure smooth movement.
- Hardware Check: Regularly inspect all bolts and screws to ensure they remain tight. Re-tighten if necessary to maintain stability and safety.
- Avoid Direct Sunlight: Prolonged exposure to direct sunlight can cause fading or degradation of materials.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not adjust height | Gas lift not engaged or faulty; lever not fully pulled/pushed. | Ensure the lever is fully engaged. If the issue persists, the gas lift may need replacement. |
| Chair is wobbly or unstable | Loose screws or bolts; casters not fully inserted. | Check and tighten all assembly screws. Ensure casters are fully seated in the base. |
| Casters do not roll smoothly | Debris (hair, lint) caught in casters; damaged casters. | Clean any debris from the caster wheels. If damaged, casters may need replacement. |
| Squeaking noises | Loose connections; friction between components. | Tighten all screws. Apply a small amount of silicone lubricant to moving parts or joints if necessary. |
Specifications
- Model Name: OFC-MBH
- Brand: IRIS OHYAMA
- Product Dimensions (W x D x H): Approximately 59 x 65 x 107-115 cm (23.2 x 25.6 x 42.1-45.3 inches)
- Seat Height: Approximately 44 - 52 cm (17.3 - 20.5 inches)
- Item Weight: Approximately 10 kg (22.0 lbs)
- Maximum Weight Recommendation: 102 kg (220 lbs)
- Main Material/Overlay Fabric: Polyester
- Cushioning Material: Urethane foam
- Backrest/Seat/Leg Frame: Steel
- Armrest Material: Steel/Polypropylene
- Casters Material: Polyurethane, Nylon
- Color: Black
- Furniture Base Movement: Rock (up to 15 degrees)
- Included Components: Hex wrench
- Recommended Uses: Office, Home Office
- Surface Recommendation: Carpet, Hard Floor
Image: Diagram illustrating the key dimensions of the chair, including width (59cm), depth (65cm), and adjustable height (107-115cm), along with weight capacity (120kg) and actual weight (10kg).
Warranty Information
IRIS OHYAMA products are manufactured to high-quality standards. For specific warranty details, including coverage period and terms, please refer to the warranty card included with your purchase or visit the official IRIS OHYAMA website. Please retain your proof of purchase for any warranty claims.
Customer Support
If you have any questions, require assistance with assembly, or encounter any issues not covered in this manual, please contact IRIS OHYAMA customer support. Contact information can typically be found on our official website or on the product packaging.
For further assistance, please visit: IRIS OHYAMA Official Website