hjh OFFICE 657550 Top Work 77 Ergonomic High Office Chair Instruction Manual

1. Product Overview

The hjh OFFICE Top Work 77 is a professional counter chair designed for demanding work environments. It features a high-quality synchronous mechanism, adjustable armrests, integrated lumbar support, and a stable polished aluminum base. The chair is engineered to provide comfort and support during extended sitting periods, making it suitable for various professional settings such as reception desks, exhibition stands, or any workspace requiring flexible seating.

Key features include:

• Ergonomic design with adjustable height.
• Armrests adjustable in angle, width, length, and height.
• Synchronous mechanism for individual backrest resistance adjustment, promoting healthy posture.
• Padded seat with durable fabric and breathable mesh backrest with integrated lumbar support.
• Height-adjustable foot ring for additional comfort and ergonomic support.
• Stable cross base with glides, convertible to casters (optional).

Figure 1: Front view of the hjh OFFICE Top Work 77 ergonomic high office chair.

Figure 2: The Top Work 77 chair in an office reception setting.

2. Safety Warnings

Caution: Do not use the chair with a weight exceeding 110 kg (242 lbs). Assemble the chair strictly following the provided instructions to ensure safe and stable operation. Failure to do so may result in injury or damage to the product.

3. Setup and Assembly

Detailed assembly instructions are typically included in the product packaging. Please refer to the separate assembly guide for step-by-step instructions. Ensure all components are present and undamaged before beginning assembly. Tools required are usually minimal and often included.

General assembly steps involve:

1. Attaching the glides (or optional casters) to the base.
2. Inserting the gas lift into the base.
3. Assembling the seat and backrest components.
4. Attaching the armrests.
5. Placing the assembled seat/backrest onto the gas lift.
6. Attaching and adjusting the foot ring.

Verify all screws and connections are tightened securely before using the chair.

4. Operating Instructions (Adjustments)

The hjh OFFICE Top Work 77 chair offers several adjustment options to customize your seating experience:

4.1. Seat Height Adjustment

To adjust the seat height, locate the lever typically found under the right side of the seat. While seated, lift the lever to lower the seat. To raise the seat, stand up slightly and lift the lever. Release the lever at the desired height.

4.2. Synchronous Mechanism and Backrest Tilt

The chair features a synchronous mechanism that allows the backrest and seat to tilt in a coordinated motion. This mechanism can be locked in four different positions. Use the side rotary knob to adjust the resistance of the backrest tilt to your individual preference. Turn the knob clockwise to increase resistance and counter-clockwise to decrease it.

Figure 3: Illustration of backrest tilt and resistance adjustment.

4.3. Armrest Adjustments

The armrests are multi-functional and can be adjusted for optimal support:

• Height Adjustment: Press the button on the side of the armrest support and slide the armrest up or down. Release the button to lock it in place.
• Angle Adjustment: The armrest pads can be rotated to adjust their angle.
• Width and Length Adjustment: The armrest pads can also be slid forward/backward and inward/outward to fine-tune their position.

4.4. Foot Ring Adjustment

The foot ring can be adjusted in height to provide comfortable foot support. Loosen the knob or lever on the foot ring support, slide the ring to the desired height, and then tighten to secure it.

Figure 4: Detailed view of chair features and adjustment points.

5. Maintenance

To ensure the longevity and appearance of your hjh OFFICE Top Work 77 chair, follow these simple maintenance guidelines:

• Cleaning: Wipe down the chair with a damp cloth and mild soap solution. Avoid harsh chemicals or abrasive cleaners, as these can damage the fabric, mesh, or frame.
• Regular Inspection: Periodically check all screws and connections to ensure they remain tight. Re-tighten if necessary.
• Avoid Overloading: Do not exceed the maximum weight capacity of 110 kg (242 lbs).
• Protect from Direct Sunlight: Prolonged exposure to direct sunlight can cause fading of the fabric and mesh.

6. Troubleshooting

If you encounter any issues with your hjh OFFICE Top Work 77 chair, consider the following common solutions:

• Chair feels wobbly: Check all assembly screws and bolts. Ensure they are securely tightened.
• Seat height adjustment not working: Verify that the gas lift lever is fully engaged. If the issue persists, the gas lift may need replacement.
• Backrest tilt not functioning: Ensure the synchronous mechanism is not locked in a fixed position. Adjust the tension knob to see if it resolves the issue.
• Squeaking noises: Apply a small amount of silicone-based lubricant to moving parts or joints, avoiding fabric and mesh areas.

For persistent problems or issues not listed here, please contact customer support.

7. Specifications

Figure 5: Dimensional drawing of the hjh OFFICE Top Work 77 chair.

8. Warranty and Support

For information regarding warranty coverage, please refer to the documentation included with your purchase or visit the official hjh OFFICE website. Spare parts availability information is currently unavailable.

For customer support, technical assistance, or to inquire about replacement parts, please contact hjh OFFICE directly through their official channels.