MELOKEA ReliefBack Pro Ergonomic Office Chair

1. Introduction

Thank you for choosing the MELOKEA ReliefBack Pro Ergonomic Office Chair. This chair is designed to provide superior comfort and support for extended periods of sitting. It features a 2nd generation FlexBack adaptive lumbar support, a patented weight-sensing tilt mechanism, an extra-wide 2D adjustable headrest, and 3D adjustable armrests. This manual provides essential information for assembly, operation, maintenance, and troubleshooting to ensure optimal use of your chair.

Image: The MELOKEA ReliefBack Pro ergonomic office chair positioned at a desk, showcasing its design and features in a typical office environment.

2. Safety Information

• Weight Limit: Do not exceed the maximum recommended weight of 150 kg (330 lbs).
• Proper Use: Use the chair only for its intended purpose as an office chair. Do not stand on the chair or use it as a step stool.
• Assembly: Ensure all components are securely fastened before use. Periodically check all screws and bolts for tightness.
• Children: Keep children away from the chair during assembly. Small parts may pose a choking hazard.
• Movement: Be cautious when moving the chair, especially on uneven surfaces, to prevent tipping.

3. Package Contents

Please verify that all the following components are present in your package before beginning assembly. If any parts are missing or damaged, please contact customer support.

• Backrest Assembly (with integrated lumbar support)
• Seat Cushion Assembly (with integrated spring system)
• Headrest
• Armrests (2)
• Gas Lift Cylinder
• Star Base
• Casters (5)
• Hardware Kit (screws, washers, Allen wrench)

4. Assembly Instructions

Assembly typically takes about 20-30 minutes. It is recommended to watch any available assembly videos for visual guidance. Ensure you have enough space and a clean, flat surface for assembly.

1. Attach Casters to Base: Insert the five casters into the holes at the end of each leg of the star base. Apply firm pressure until each caster clicks securely into place. This may require significant force.
2. Insert Gas Lift: Place the gas lift cylinder into the central hole of the star base. Ensure it is seated firmly.
3. Attach Armrests to Seat: Secure the armrests to the underside of the seat cushion assembly using the provided screws and Allen wrench. Ensure they are oriented correctly.
4. Attach Backrest to Seat: Connect the backrest assembly to the seat cushion assembly using the designated screws. Do not overtighten initially; tighten fully once all screws are in place.
5. Attach Headrest: Slide the headrest into the top slot of the backrest.
6. Connect Seat to Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder, ensuring the central mechanism aligns with the top of the gas lift. Press down firmly to secure.

Image: A detailed diagram illustrating the dimensions of the MELOKEA ReliefBack Pro ergonomic office chair from front and side views, including measurements for height, width, and depth of various components.

5. Adjustments and Operation

The ReliefBack Pro chair offers multiple adjustment options to customize your seating experience for optimal comfort and ergonomic support.

5.1. Seat Height Adjustment

To adjust the seat height, lift the lever located under the right side of the seat. While seated, lift the lever to lower the seat. To raise the seat, lift the lever while standing or with your weight off the seat.

5.2. 2nd Generation FlexBack Adaptive Lumbar Support

The innovative FlexBack lumbar support dynamically adjusts within a 0-15° range (up, down, left, right) to respond to your lower back movements. This provides continuous support regardless of your sitting posture or when turning your body.

Image: A visual comparison showing proper ergonomic posture with the chair's neck and lumbar support versus poor posture without support. It also highlights the automatic adjustment mechanism of the lumbar support and its bionic design.

5.3. Patented Weight-Sensing Tilt Mechanism

The chair's base automatically adapts the tilt resistance based on your weight (suitable for users between 45 kg and 150 kg), eliminating the need for manual tension adjustment. This ensures a smooth and effortless reclining experience.

Image: A person sitting in the MELOKEA chair, illustrating the correct ergonomic posture with head, back, and spine support, and proper height adjustment. An inset shows the weight-sensing mechanism at the base.

5.4. Tilt Lock Function

The chair features a two-stage tilt lock, allowing you to lock the backrest at 90° or 133°. Use the lever on the left side of the seat to engage or disengage the tilt lock.

5.5. 2D Extra-Wide Headrest Adjustment

The extra-wide headrest can be adjusted vertically by 8 cm and rotated up to 30° to accommodate users between 160 cm and 195 cm in height. Adjust by gently pulling or pushing the headrest up/down or rotating it.

5.6. 3D Adjustable Armrests

The armrests offer versatile customization: 10 cm vertical adjustment, 3 cm horizontal movement, and 30° pivot. Use the buttons or levers on the armrests to make these adjustments, reducing arm fatigue and providing optimal support.

Image: An illustration detailing the various adjustable features of the chair, including the 90°/133° two-stage tilt lock, 3D adjustable armrests (showing vertical, horizontal, and pivot movements), 2D extra-wide headrest (showing vertical and rotation adjustments), and silent PU casters for smooth mobility.

5.7. Feather Cushion Seat

The seat cushion features 20 independent springs (1.8 mm thick) surrounded by three layers of soft sponge, providing superior support and comfort compared to traditional foam padding. This design ensures even pressure distribution.

Image: A cutaway diagram showing the internal structure of the seat cushion, highlighting breathable mesh fabric, natural sponge, feather core cushion, and natural wood slats. It also includes a comparison of pressure distribution with the feather cushion versus a feederless seat cushion, demonstrating more even pressure relief.

6. Maintenance and Care

• Cleaning: Wipe the chair surfaces with a soft, damp cloth. For mesh areas, a mild soap solution can be used, followed by wiping with a clean, damp cloth. Avoid harsh chemicals or abrasive cleaners.
• Inspection: Periodically check all screws and bolts to ensure they are tight. Retighten if necessary.
• Casters: Keep casters clean from hair and debris to ensure smooth movement.
• Avoid Direct Sunlight: Prolonged exposure to direct sunlight may cause fading of materials.

7. Troubleshooting

• Chair Squeaks: Check all bolted connections and tighten if loose. A small amount of silicone lubricant can be applied to moving parts if the squeaking persists.
• Height Adjustment is Stiff: Ensure the lever is fully engaged. If the gas lift feels stiff, it may require some use to loosen up. If issues persist, contact support.
• Casters Not Rolling Smoothly: Check for debris (hair, lint) wrapped around the caster wheels. Clean them thoroughly.
• Chair Feels Unstable: Verify that all casters are fully inserted into the base and all screws are tightened. Ensure the chair is on a flat, even surface.
• Lumbar Support Not Engaging: The FlexBack lumbar support is adaptive. Ensure you are sitting correctly against the backrest for it to respond to your movements.

8. Specifications

Image: An illustration detailing the rigorous quality tests performed on the chair components (e.g., headrest, armrest, gas spring, casters, backrest, seat, recline mechanism). It also shows a cutaway view of the SGS-certified gas spring and the reinforced integrated base and high-quality tilt mechanism.

9. Warranty and Support

MELOKEA stands behind the quality of its products. The ReliefBack Pro ergonomic office chair comes with a prolonged 5-year warranty, exceeding industry standards. This warranty covers manufacturing defects and material failures under normal use.

For warranty claims, technical support, or any questions regarding your MELOKEA ReliefBack Pro chair, please contact our customer service team. Have your purchase receipt and product model information ready when contacting support.

Contact Information: Please refer to the contact details provided on your purchase platform or the official MELOKEA website for the most up-to-date support channels.