Submi Ergonomic Office Chair Instruction Manual

1. Introduction

Thank you for choosing the Submi Ergonomic Office Chair, Model SU102. This manual provides detailed instructions for assembly, operation, maintenance, and troubleshooting to ensure optimal use and longevity of your chair. Please read this manual carefully before assembly and use, and retain it for future reference.

2. Safety Information

• Maximum Load Capacity: This chair is designed to support a maximum weight of 136 kg (300 lbs). Do not exceed this weight limit.
• Recommended User Specifications:
  • Height: 150-180 cm (4'11"-5'11")
  • Weight: 50-80 kg (110 lbs-175 lbs)
• Ensure all screws and bolts are securely tightened before use. Periodically check and re-tighten as necessary.
• Do not stand on the chair or use it as a step stool.
• Keep children away from the chair during assembly. Small parts may pose a choking hazard.
• Use the chair on a flat, stable surface to prevent tipping.

3. Package Contents

Before assembly, verify that all components are present and undamaged. If any parts are missing or damaged, please contact customer support.

• Backrest Assembly
• Seat Cushion Assembly
• Armrests (2)
• Gas Lift Cylinder
• Star Base
• Casters (5)
• Hardware Kit (screws, washers, Allen wrench)
• Instruction Manual

4. Setup and Assembly Instructions

Assembly typically takes 15-20 minutes. Follow these steps carefully:

1. Attach Casters to Base: Insert the five casters into the holes at the end of each leg of the star base until they click securely into place.
2. Insert Gas Lift: Place the gas lift cylinder into the center hole of the star base. Ensure it is seated firmly.
3. Attach Armrests to Seat: Align the armrests with the pre-drilled holes on the underside of the seat cushion. Secure them using the provided screws and Allen wrench. Do not fully tighten yet.
4. Connect Backrest to Seat: Attach the backrest to the seat cushion using the remaining screws. Once the backrest and armrests are in place, fully tighten all screws.
5. Place Seat Assembly onto Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder. Apply downward pressure to ensure it is securely seated.

Figure 4.1: Front view of the assembled Submi Ergonomic Office Chair, Model SU102.

5. Operating Instructions

Adjust your chair to achieve optimal comfort and ergonomic support.

5.1. Chair Height Adjustment

To adjust the chair height, locate the lever on the right side beneath the seat. While seated, pull the lever up to lower the chair. To raise the chair, stand up and pull the lever up. Release the lever at the desired height.

5.2. Armrest Adjustment (Flip-up)

The armrests feature a flip-up design for space-saving. To raise the armrests, simply lift them upwards until they lock into a vertical position. To lower them, pull them down. This allows the chair to be pushed closer to a desk.

Figure 5.1: Illustration of flip-up armrests, rocking function, and seat rotation.

5.3. Headrest Adjustment

The headrest offers multi-dimensional adjustments for optimal neck support:

• Height Adjustment: Lift the headrest upwards to increase its height by up to 11 cm (4.3 inches). Push down to lower.
• Rotation: Rotate the headrest up to 30 degrees to find your preferred angle.
• Angle Adjustment: The headrest also features an adjustable angle of 25 degrees for personalized cervical support.

Figure 5.2: Headrest adjustment options for height, rotation, and angle.

5.4. Lumbar Support System

The chair features a dual-segment backrest with a split lumbar support system. This design adapts to the natural L3-L5 curves of your spine, providing targeted support to reduce pressure on intervertebral discs. The lumbar support automatically adjusts to your posture.

Figure 5.3: The split lumbar support system provides adaptive waist and full-angle support.

5.5. Rocking Function

The chair allows for a 25-degree rocking motion. To engage or disengage the rocking function, use the tension knob located beneath the seat. Turn clockwise to increase tension (less rocking) and counter-clockwise to decrease tension (more rocking).

6. Maintenance

Regular maintenance will help preserve the appearance and functionality of your chair.

• Cleaning Mesh Fabric: The highly elastic mesh fabric is stain-resistant. For daily spills, gently wipe with a damp cloth and mild soap. Avoid harsh chemicals or abrasive cleaners.
• Cleaning Padded Seat: For the padded seat cushion, use a soft, damp cloth with a mild upholstery cleaner. Blot spills immediately.
• Frame and Base: Wipe the nylon frame and star base with a soft, dry or slightly damp cloth.
• Casters: Periodically clean any hair or debris from the casters to ensure smooth rolling.
• Hardware Check: Every few months, check all screws and bolts to ensure they are tight. Re-tighten if necessary.

7. Troubleshooting

If you encounter any issues with your chair, refer to the following common problems and solutions:

• Chair Sinks or Does Not Stay Up: This usually indicates an issue with the gas lift cylinder. Ensure the height adjustment lever is fully disengaged. If the problem persists, the gas lift may need replacement.
• Chair Squeaks: Check all screws and bolts, especially where the backrest and armrests attach to the seat, and where the seat attaches to the mechanism. Tighten any loose hardware. Applying a small amount of silicone lubricant to moving parts (avoiding the gas lift piston) may also help.
• Casters Not Rolling Smoothly: Inspect casters for trapped hair, dust, or debris. Clean them thoroughly. Ensure casters are fully inserted into the star base.
• Difficulty Adjusting Headrest: Ensure no obstructions are present. If the mechanism feels stiff, try moving it through its full range of motion a few times.

If troubleshooting steps do not resolve the issue, please contact Submi customer support.

8. Specifications

Figure 8.1: Product dimensions and recommended user specifications.

Figure 8.2: Composition of the chair's seat cushion.

9. Warranty and Support

Submi is committed to providing quality products and customer satisfaction.

• Replacement Policy: We offer a 6-month free replacement for gas springs, armrests, or casters from the date of purchase.
• Customer Support: Bilingual (English/French) 24/7 online support is available for lifetime after-sales service.

For assistance, please contact our customer support team via the contact information provided on our official website or through your purchase platform.