MELOKEA 18G
MELOKEA Ergonomic Office Chair User Manual
Model: 18G
Brand: MELOKEA
Introduction
Welcome and thank you for choosing the MELOKEA Ergonomic Office Chair. This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure you get the most comfortable and productive experience from your chair.
This office chair meets all requirements of the European standard EN 1335-1:2020 for professional office chairs.
Safety Information
Important Safety Warnings
Warning: Do not exceed the maximum weight capacity of 200 kg (440 lbs). Please note that some older instructions may state 150 kg, but the updated capacity is 200 kg.
Ensure the chair's stability, especially due to its larger size.
Exercise caution when adjusting movable parts such as the backrest and foldable armrests to prevent injury.
For optimal use, this chair is suitable for individuals between 155-185 cm (5'1" - 6'1") in height.
Package Contents
What's in the Box
- Ergonomic Office Chair Components
- Assembly Instructions
- Required Tools (e.g., Allen key)
Note: Please check all components against the packing list before beginning assembly. If any parts are missing or damaged, please contact customer service.
Assembly Instructions
Follow these steps carefully for proper assembly. It is recommended to have two people for certain steps.
- Unpack Components: Carefully remove all parts from the packaging and lay them out on a clean, flat surface.
- 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 chair base.
- Attach Mechanism to Seat: Secure the control mechanism to the underside of the seat cushion using the provided screws. Ensure the front of the mechanism faces the front of the seat.
- Connect Seat to Gas Lift: Carefully place the assembled seat onto the gas lift cylinder.
- Attach Backrest: Align the backrest with the mounting points on the seat mechanism. Secure it with screws.
- Install Armrests: Attach the armrests to the seat and backrest. Important Note: When attaching the armrests, do not fully tighten the screws on one side until the other armrest is aligned with its mounting hole. Once both are aligned, tighten all screws securely.
- Final Check: Ensure all screws are tightened and the chair is stable before use.

Image: MELOKEA F018 Office Chair with key dimensions (height 117-127cm, seat width 52cm, seat depth 54cm, armrest height 29cm, seat cushion thickness 10cm, base diameter 70cm) and an assembly note regarding armrest tightening. The chair supports up to 200 kg.
Operating and Adjustments
The MELOKEA Ergonomic Office Chair offers multiple adjustment options to customize your sitting experience for optimal comfort and support.
1. Height Adjustment
To adjust the seat height (48-58 cm range), pull the lever located under the right side of the seat upwards.
- To raise the seat: Lift the lever while taking your weight off the seat.
- To lower the seat: Lift the lever while seated.

Image: Illustration of the TÜV-certified gas lift, highlighting its strength and durability for height adjustment. The gas lift allows for approximately 10cm (3.9 inches) of height adjustment, suitable for various statures.
2. Recline and Rocking Function
The chair features a 90°-115° rocking function with two modes: tilt or lock.
- To enable rocking: Pull the lever on the left side of the seat outwards (unlock).
- To lock the recline position: Push the lever inwards (lock).
- Tension adjustment: Rotate the round knob under the seat to adjust the tension of the rocking mechanism, allowing for free adjustment of elasticity.

Image: Diagram showing the 90°-115° rocking function, 360° swivel, and controls for height adjustment (10cm range), recline lock/unlock, and tension adjustment. The headrest is also shown to be adjustable up and down by 6cm.
3. Headrest Adjustment
The large headrest can be adjusted up and down by 6 cm to provide tailored neck support.

Image: Close-up view of the adjustable headrest, illustrating its 6cm vertical adjustment range for personalized neck support.
4. Armrest Adjustment
The armrests are reversible and can be folded up by 90 degrees, allowing the chair to be pushed closer to a desk or stored compactly.

Image: Diagram illustrating the 90-degree foldable armrests, showing how they allow the chair to be positioned closer to a desk, saving space.
5. Lumbar Support
The uniquely designed S-shaped low back lumbar support conforms to the curve of the human body, providing precise support and considering the needs of each part of the spine.

Image: Detailed view of the S-shaped ergonomic lumbar support and adjustable headrest, highlighting how they provide tailored waist and neck care by fitting the natural curve of the spine.
6. Seat Cushion
The improved foam seat cushion is 10cm thick, softer, and more supportive. Wrapped in breathable fabric, it adapts to the curve of the hips, distributes pressure, and retains its original shape over time.

Image: Cross-section view of the seat cushion, showing its curved pressure-relieving design, thickened padding, and high-quality breathable mesh fabric. It emphasizes the soft and supportive high-density compressed memory foam compared to insufficiently padded alternatives.
Maintenance
Care and Maintenance
- Cleaning: Wipe down plastic and metal parts with a soft, damp cloth. For mesh and fabric areas, use a mild fabric cleaner or a vacuum cleaner with a brush attachment to remove dust and debris. Avoid harsh chemicals or abrasive cleaners.
- Casters: Periodically check the casters for hair or debris buildup and clean them to ensure smooth and quiet gliding.
- Screws and Bolts: Regularly inspect all screws and bolts to ensure they are tight. Retighten if necessary to maintain stability and safety.
- Gas Lift: The gas lift is maintenance-free. Do not attempt to disassemble it.
Troubleshooting
Common Issues and Solutions
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair is wobbly | Loose screws or improper assembly | Check and tighten all assembly screws, especially those connecting the seat, backrest, and armrests. Ensure the gas lift is properly seated in the base. |
| Seat height won't adjust | Gas lift issue or lever malfunction | Ensure the height adjustment lever is fully engaged. If the issue persists, the gas lift may need replacement. Contact customer service. |
| Casters not rolling smoothly | Debris (hair, lint) caught in casters | Turn the chair over and carefully remove any debris from the caster wheels. |
| Rocking function not working | Recline lock engaged or tension too tight | Ensure the recline lock lever is pulled outwards (unlocked). Adjust the tension knob under the seat to a looser setting. |
Specifications
Product Specifications
| Feature | Detail |
|---|---|
| Brand | MELOKEA |
| Model Number | 18G |
| Color | Grey |
| Product Dimensions | 63D x 29W x 53H cm (overall) |
| Seat Dimensions | 54W x 52D x 10H cm (cushion) |
| Height Adjustment Range | 48-58 cm (seat height) |
| Headrest Adjustment | 6 cm vertical |
| Item Weight | 15 Kilograms |
| Maximum Weight Capacity | 200 kg |
| Certifications | EN 1335-1:2020, TÜV-certified gas lift, BIFMA tested |
| Back Style | Fixed Backrest with S-shaped lumbar support |
| Armrests | Foldable (90 degrees) |

Image: Overview of professional testing and quality assurance, including 100,000 seating durability tests, 100,000 caster durability tests, 120,000 backrest durability tests, 60,000 armrest load tests, 120,000 rotation cycle tests, 300,000 tilt mechanism endurance tests, and 100,000 chair base tests, all contributing to exceptional quality and BIFMA certification.
Warranty and Customer Support
MELOKEA offers a 3-year after-sales service, exceeding industry standards.
If you encounter any issues with your product, we offer free replacement of defective accessories.
Please choose us with confidence! For any questions, please do not hesitate to contact us. We guarantee a satisfactory solution.
Contact Information: Please refer to the contact details provided on your purchase receipt or the official MELOKEA website for customer service.
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