Introduction
Thank you for choosing the BASETBL Heavy-Duty Office Chair. This chair is designed to provide exceptional comfort and support for extended periods, featuring a robust construction, an extra-large spring cushion, an adjustable headrest, and a convenient footrest. This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure you get the most out of your new office chair.
Figure 1: BASETBL Heavy-Duty Office Chair - Front View
This image shows the complete BASETBL Heavy-Duty Office Chair in black, featuring its ergonomic design, plush cushioning, and sturdy base. The adjustable headrest and lumbar pillow are visible, along with the integrated footrest tucked underneath the seat.
Product Features and Dimensions
The BASETBL Office Chair is engineered for superior comfort and durability, accommodating users between 160 cm and 210 cm (5'3" to 6'11") and supporting up to 200 kg (440 lbs).
- Adjustable Headrest: Can be raised up to 9 cm for optimal neck support.
- Spacious Spring Seat Cushion: 60 cm wide, 15% wider than standard seats, with high-density elastic foam and 25 integrated 3D springs for lasting comfort.
- Deeper Seat Depth: 55 cm depth provides better leg support, reducing fatigue.
- Infinite Locking Positions: Recline angle can be locked between 90° (upright working position) and 120° (relaxed napping position).
- Synchronous Armrests: Move with the recline angle, offering continuous elbow support.
- Optimized Seat Height: Adjustable from 49 cm to 57 cm, allowing feet to rest flat on the floor.
- Retractable Footrest: Thick, sliding footrest for leg pressure relief and full-body relaxation.
- Removable Lumbar Cushion: Provides additional lower back support.
- Premium Synthetic Leather: Durable, water-resistant, easy to clean, soft, and skin-friendly.
- Robust Construction: Features a superior SGS certified gas lift and a sturdy metal base, tested to BIMIFA standards.
- Quiet PU Casters: Smooth and silent mobility on various floor types.
Figure 2: Detailed Product Dimensions and Key Features
This image illustrates the various dimensions of the chair, including seat width (60cm), seat depth (55cm), backrest height (78cm), and overall height range (110-130cm). It also highlights key features such as articulated armrests, independent lumbar support, and the concealable footrest, along with the 200kg weight capacity and recommended user height range.
Figure 3: Chair Suitability for Different User Groups
This image visually confirms the chair's robust design, indicating its suitability for various body types and its impressive 440 lbs (200 kg) weight capacity, ensuring stability and comfort for a wide range of users.
Setup and Assembly
Your BASETBL Office Chair comes with all necessary tools and detailed instructions for easy assembly. Please follow these steps carefully.
Before You Begin:
- Unpack all components and verify against the parts list provided in the packaging.
- Ensure you have enough clear space for assembly.
- Keep children and pets away from the assembly area.
Assembly Steps:
- Attach Casters to Base: Insert the five quiet PU casters into the holes on the sturdy metal base until they click securely into place.
- Install Gas Lift: Place the SGS certified gas lift into the center hole of the metal base.
- Assemble Seat and Backrest: Attach the backrest to the seat cushion using the provided screws and tools. Ensure all connections are firm.
- Connect Armrests: Secure the synchronous armrests to both the seat and backrest.
- Mount Seat Assembly onto Gas Lift: Carefully place the assembled seat and backrest onto the gas lift, ensuring it is properly seated.
- Attach Lumbar Cushion: Position the removable lumbar cushion as desired for lower back support.
- Test Functions: Once assembled, test all adjustable features (height, recline, headrest, footrest) to ensure proper operation.
Figure 4: Initial Assembly Steps and Components
This image shows the main components of the chair, including the base, gas lift, seat, and backrest, illustrating the initial steps of assembly. It also highlights the adjustable headrest feature.
Figure 5: Seat Cushion Width Comparison (F051 XXL vs. Others)
This image compares the 60cm wide seat cushion of the F051 XXL model with other standard chairs, emphasizing the extra space and comfort provided by the BASETBL chair.
Operating Instructions
Familiarize yourself with the various adjustments of your BASETBL Office Chair to optimize your comfort and posture.
1. Seat Height Adjustment:
Locate the lever on the right side, under the seat. Pull the lever up to raise the seat. To lower, sit on the chair and pull the lever up. Release the lever at your desired height. The seat height is adjustable from 49 cm to 57 cm.
2. Recline and Tilt Lock:
The chair allows you to lock the recline angle between 90° (upright working position) and 120° (relaxed napping position). Use the lever on the left side, under the seat, to engage or disengage the tilt lock. Adjust the tension knob underneath the seat to control the resistance of the recline.
3. Adjustable Headrest:
The headrest can be adjusted vertically by pulling it up or pushing it down. It offers up to 9 cm of height adjustment to provide optimal neck and head support.
Figure 6: Headrest Height Adjustment
This image demonstrates the 9cm vertical adjustment range of the headrest, allowing users to customize neck support for prolonged comfort.
4. Retractable Footrest:
To use the footrest, pull it out from under the seat. Extend it fully and rest your legs for relaxation. Push it back in when not in use to conceal it.
5. Lumbar Cushion:
The lumbar cushion is removable and can be positioned to provide additional support to your lower back as needed.
Figure 7: Overview of Chair Adjustments and Components
This image provides a comprehensive view of the chair's adjustable features, including the recline mechanism (90°-120°), tilt function adjustment, tension adjustment, 10cm height adjustment, quiet PU wheels, stable metal chair legs, reinforced frame, soft armrests, and the retractable footrest.
Figure 8: Seat Cushion Technology and Material Properties
This image highlights the internal construction of the seat cushion, showing the 25 three-dimensional springs and the 15cm thickness. It also details the properties of the premium synthetic leather: skin-friendly, wear-resistant, and easy to clean, along with its waterproof nature.
Maintenance and Care
Proper maintenance will extend the life and appearance of your BASETBL Office Chair.
- Cleaning: The premium synthetic leather is water-resistant and easy to clean. Wipe spills immediately with a soft, damp cloth. For general cleaning, use a mild soap solution and wipe dry. Avoid harsh chemicals or abrasive cleaners.
- Caster Care: Periodically check the casters for hair or debris that might impede smooth movement. Clean as necessary.
- Hardware Check: Every few months, check all screws and bolts to ensure they are tight. Retighten if necessary to maintain stability.
- Avoid Direct Sunlight: Prolonged exposure to direct sunlight can cause the material to fade or crack. Position the chair away from direct sunlight if possible.
Troubleshooting
If you encounter any issues with your BASETBL Office Chair, please refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair does not raise or lower. | Gas lift malfunction or lever not engaged. | Ensure the height adjustment lever is fully engaged. If the issue persists, the gas lift may need replacement. Contact customer support. |
| Chair wobbles or feels unstable. | Loose screws or improper assembly. | Check all assembly screws and bolts and tighten them securely. Ensure the gas lift is properly seated in the base. |
| Casters do not roll smoothly. | Debris (hair, lint) caught in casters. | Turn the chair over and carefully remove any debris from the caster wheels. |
| Recline function is too stiff or too loose. | Tilt tension not adjusted correctly. | Adjust the tilt tension knob located underneath the seat. Turn clockwise to increase tension, counter-clockwise to decrease. |
Specifications
Detailed technical specifications for the BASETBL Heavy-Duty Office Chair.
| Feature | Detail |
|---|---|
| Brand | BASETBL |
| Model Number | 051 (UKCHAB051B-A2-FBA) |
| Color | Black |
| Material | Synthetic Leather (Simili cuir) |
| Frame Material | Alloy Steel |
| Seat Material Type | High-Density Sponge |
| Product Dimensions (L x W x H) | 82 x 38 x 66 cm (packaged); 82P x 38l x 66H cm (assembled) |
| Item Weight | 27.7 Kilograms |
| Weight Capacity | Up to 200 kg (440 lbs) |
| Seat Height Adjustment Range | 49 cm to 57 cm |
| Headrest Adjustment Range | Up to 9 cm |
| Recline Angle | 90° to 120° (lockable) |
| Special Features | Armrest, Headrest, Adjustable Height, Seat Lock, Retractable Footrest, Lumbar Cushion |
| Certifications | European standard EN12520, SGS certified gas lift, BIMIFA tested metal base |
Figure 9: Compliance with European Standard EN12520
This image displays a section of the technical report, confirming the chair's compliance with European standard EN12520 for furniture strength, durability, and safety, ensuring its robust and reliable construction.
Warranty and Support
BASETBL is committed to providing high-quality products and excellent customer service.
- Return and Exchange Policy: Enjoy peace of mind with our 30-day return and exchange policy.
- Parts Replacement: Free parts replacements are available within 2 years of purchase.
- Customer Support: For any issues or inquiries, please access "Quick Access Support" through "Your Orders" on Amazon. Find your order number and click "Contact Seller". We aim to provide a professional solution within 24 hours.
- BASETBL Expertise: With over 20 years of experience in ergonomic seating systems, BASETBL chairs undergo extensive durability, tilt, and rotation tests to meet the highest performance standards.
