Introduction
This manual provides detailed instructions for the assembly, operation, maintenance, and troubleshooting of your Lorell Millenia Pneumatic Adjustable Task Chair. Designed for all-day comfort, this chair features a molded seat and back, durable construction, and multiple adjustment options to suit your needs.

Image: Lorell Millenia Pneumatic Adjustable Task Chair in Black.
Key features include:
- Molded seat and back for ergonomic support.
- Durable shellback and seat base for clean aesthetics.
- Pneumatic seat-height adjustment for optimal positioning.
- Adjustable back height for lumbar support.
- Seat-depth adjustment for varied user leg lengths.
- 360-degree swivel for mobility.
- Height and width adjustable arms.
Setup Instructions
Your Lorell Millenia Task Chair requires assembly. While specific tools are generally not required, ensure all components are present before beginning.
Unpacking and Component Check:
- Carefully open the packaging and remove all components.
- Place all parts on a clean, flat, and soft surface to prevent scratches.
- Verify that all parts listed in the packing list are present. If any parts are missing or damaged, do not proceed with assembly. Contact customer support immediately.
Assembly Steps:
- 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. Ensure it is seated securely.
- Assemble Seat and Back: Attach the seat and back components according to the included diagram. This typically involves securing the backrest to the seat mechanism using knobs or bolts.
- Attach Arms (Optional): If using arms, attach them to the seat base using the provided hardware. Adjust arm width as desired before tightening.
- Connect Seat to Gas Lift: Carefully place the assembled seat onto the gas lift cylinder. The tapered end of the gas lift should fit into the mechanism under the seat. Apply gentle downward pressure to secure.

Image: Front view of the chair illustrating various dimensions for assembly reference.

Image: Side view of the chair illustrating various dimensions for assembly reference.
Operating Instructions (Adjustments)
Your Lorell Millenia chair offers several adjustments to customize your seating experience for optimal comfort and support.
1. Pneumatic Seat-Height Adjustment:
To raise the seat, lift the lever located under the right side of the seat while taking your weight off the chair. To lower the seat, lift the same lever while remaining seated. Release the lever at the desired height.
2. Back-Height Adjustment:
To adjust the backrest height, loosen the knob located on the back support column. Slide the backrest up or down to your preferred position, then tighten the knob securely.
3. Seat-Depth Adjustment:
Locate the lever or knob under the seat (position may vary). Engage the mechanism to slide the seat forward or backward, adjusting the depth to ensure proper thigh support and clearance behind your knees. Release the lever/knob to lock the position.
4. Arm Height and Width Adjustment:
Height: Press the button on the side of each armrest and slide the armrest up or down to the desired height. Release the button to lock.
Width: Loosen the knobs located under the seat that secure the armrests. Adjust the armrests inward or outward to achieve your preferred width, then tighten the knobs.
5. 360-Degree Swivel:
The chair is designed to swivel freely 360 degrees, allowing for easy movement and access to different areas of your workspace without needing to reposition the entire chair.
Maintenance
Proper care and maintenance will extend the life and appearance of your Lorell Millenia Task Chair.
- Cleaning: For general cleaning, wipe surfaces with a soft, damp cloth. For fabric upholstery, use a mild fabric cleaner or follow the "Spot Clean" instruction. Avoid harsh chemicals or abrasive cleaners.
- Spot Cleaning: For spills or stains on fabric, blot immediately with a clean, dry cloth. Apply a small amount of upholstery cleaner to a clean cloth and gently dab the stained area. Do not rub vigorously. Allow to air dry.
- Hardware Check: Periodically check all screws, bolts, and knobs to ensure they are tight. Loose hardware can affect the chair's stability and safety.
- Caster Care: Keep casters free of debris (hair, dust, etc.) to ensure smooth rolling. You may need to periodically remove casters and clean the axles.
- Weight Limit: Do not exceed the maximum weight recommendation of 250 pounds to prevent damage to the chair and ensure user safety.
Troubleshooting
If you encounter issues with your chair, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair wobbles or feels unstable. | Loose hardware; gas lift not fully seated; uneven floor. |
|
| Seat does not adjust up or down. | Gas lift malfunction; adjustment lever stuck. |
|
| Casters do not roll smoothly. | Debris caught in casters; damaged casters. |
|
| Backrest does not stay in position. | Back-height adjustment knob is loose. |
|
Specifications
Detailed specifications for the Lorell Millenia Pneumatic Adjustable Task Chair (Model LLR80004).
| Feature | Detail |
|---|---|
| Model Name | Chair |
| Item Model Number | LLR80004 |
| Brand | Lorell |
| Color | Black |
| Material | Plastic, Fabric (Foam fill) |
| Product Dimensions (D x W x H) | 23.5"D x 23.23"W x 12.52"H |
| Item Weight | 25 pounds |
| Maximum Weight Recommendation | 250 Pounds |
| Seat Height | 22.4 Inches (Adjustable range: 17.3" - 22.4") |
| Seat Depth | 24 inches (Adjustable range: 18.5" - 20.1") |
| Chair Backrest Width | 18.9 Inches |
| Special Feature | Durable, Adjustable |
| Assembly Required | Yes |
| Product Care Instructions | Spot Clean |
| GTIN / UPC | 035255800044, 809099330940, 641438460105 |

Image: Detailed dimensions of the Lorell Millenia Task Chair.
Warranty Information
The Lorell Millenia Pneumatic Adjustable Task Chair comes with a 5-year warranty. This warranty covers defects in materials and workmanship under normal use. For specific terms, conditions, and to make a warranty claim, please retain your proof of purchase and contact Lorell customer support.
The warranty does not cover damage resulting from misuse, abuse, unauthorized modifications, or exceeding the recommended weight capacity.
Customer Support
For further assistance, missing parts, warranty claims, or any other inquiries regarding your Lorell Millenia Pneumatic Adjustable Task Chair, please contact Lorell customer support.
You can typically find contact information on the Lorell official website or through the retailer where you purchased the product.
Online Resources: Visit the Lorell Store on Amazon for product information and updates.





