1. Introduction
This manual provides instructions for the assembly, operation, maintenance, and troubleshooting of your BOLISS LB-2010 Mid Back Mesh Ergonomic Office Chair. Please read this manual thoroughly before assembly and use to ensure proper function and safety.
Figure 1: BOLISS LB-2010 Mid Back Mesh Ergonomic Office Chair
2. Safety Information
Important Safety Instructions:
- Do not exceed the maximum weight recommendation of 400 pounds (181 kg).
- Keep hands and feet clear of moving parts, especially during adjustment, to prevent injury.
- Ensure all bolts and screws are securely tightened before use. Periodically check and re-tighten as necessary.
- Use the chair only on a level surface.
- Do not stand on the chair.
- Avoid exposing the chair to direct sunlight or extreme temperatures for prolonged periods.
- Keep small children and pets away from the chair during assembly.
3. Package Contents
Before beginning assembly, verify that all components are present and undamaged. If any parts are missing or damaged, please contact customer support.
- 1 x Backrest
- 1 x Lumbar Support (integrated with backrest)
- 1 x Seat Cushion
- 1 x Five-Star Base
- 1 x Gas Lift Cylinder Column
- 1 x Control Mechanism
- 2 x Armrests
- 5 x Casters (Wheels)
- Assembly Hardware (screws, washers, Allen key)
4. Assembly Instructions
Assembly typically takes 30-45 minutes. It is recommended to assemble the chair on a soft, clean surface to prevent damage.
- Attach Casters to Base: Insert each of the 5 casters into the holes at the end of each leg of the five-star base. Push firmly until they click into place.
- Insert Gas Lift Cylinder: Place the gas lift cylinder into the center hole of the five-star base.
- Attach Control Mechanism to Seat: Align the control mechanism with the pre-drilled holes on the underside of the seat cushion. Ensure the front of the mechanism faces the front of the seat. Secure with screws and washers using the provided Allen key.
- Attach Armrests to Seat: Attach each armrest to the sides of the seat cushion using the designated screws. Ensure they are oriented correctly.
- Attach Backrest to Seat: Align the backrest with the mounting plate on the control mechanism or the rear of the seat. Secure with screws.
- Connect Seat Assembly to Base: Carefully place the assembled seat onto the gas lift cylinder, ensuring the cylinder's top fits securely into the mechanism's opening.
Figure 2: Assembly and Feature Diagram
5. Operating Instructions (Adjustments)
Your BOLISS LB-2010 chair offers several adjustment features for personalized comfort:
- Seat Height Adjustment: Locate the lever on the right side, beneath the seat. Pull the lever up to raise the seat. While seated, pull the lever up to lower the seat. Release the lever to lock the height.
- Armrest Height Adjustment: Press the button located on the side of each armrest. While holding the button, move the armrest up or down to your desired height. Release the button to lock the armrest in place.
- Backrest Tilt Adjustment: Locate the lever on the left side, beneath the seat. Pull the lever out to unlock the tilt function, allowing the backrest to recline. Push the lever in to lock the backrest in an upright position.
- Tilt Tension Adjustment: The round knob at the front of the control mechanism, beneath the seat, adjusts the resistance of the tilt function. Turn clockwise to increase tension (making it harder to recline) or counter-clockwise to decrease tension (making it easier to recline).
- 360-Degree Swivel: The chair is designed to swivel 360 degrees for easy movement and access.
Figure 3: Rear view of the chair, highlighting mesh back and lumbar support
6. Maintenance
Regular maintenance helps prolong the life and appearance of your chair.
- Cleaning: Wipe down plastic and metal parts with a soft, damp cloth. For the mesh back and fabric seat, use a mild fabric cleaner and a soft brush, testing on an inconspicuous area first. Avoid harsh chemicals or abrasive cleaners.
- Inspection: Periodically check all screws and bolts to ensure they are tight. Re-tighten if necessary.
- Casters: Clean casters regularly to remove dust and debris that may hinder smooth movement.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not raise or lower | Gas lift cylinder malfunction or control lever not engaged. | Ensure the height adjustment lever is fully engaged. If the problem persists, the gas lift cylinder may need replacement. Contact customer support. |
| Chair wobbles or feels unstable | Loose screws or uneven floor. | Check and tighten all assembly screws, especially those connecting the seat to the mechanism and the backrest. Ensure the chair is on a flat, even surface. |
| Casters do not roll 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 tilt or lock | Tilt lock lever not engaged or tilt tension too high/low. | Ensure the tilt lock lever is correctly positioned. Adjust the tilt tension knob to your preference. |
| Armrests are loose or wobbly | Armrest attachment screws are loose. | Tighten the screws that secure the armrests to the seat. |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | BOLISS |
| Model Name | LB-2010 |
| Color | All in Black |
| Product Dimensions (D x W x H) | 25.4" x 28.1" x 37" (64.5 cm x 71.4 cm x 94 cm) |
| Maximum Weight Recommendation | 400 lbs (181 kg) |
| Back Style | Mesh Back |
| Special Features | Adjustable Height, Adjustable Arm Rests, Ergonomic Design, Swivel, Tilt Function |
| Seat Depth | 18 inches (45.7 cm) |
| Fill Material | Molded Foam |
| Item Weight | 39.7 pounds (18 kg) |
| Assembly Required | Yes |
Figure 4: Chair Dimensions
9. Warranty and Support
BOLISS is committed to customer satisfaction. Your BOLISS LB-2010 office chair comes with a two-year warranty from the date of purchase.
During this period, if you encounter any issues or require assistance with your product, please contact BOLISS customer service. Our support team is available to help resolve any concerns and ensure your product functions as intended.
For warranty claims or technical support, please refer to the contact information provided with your purchase documentation or visit the official BOLISS website.