1. Important Safety Information
Please read this manual carefully before assembly and use. Keep these instructions for future reference. This manual contains safety guidelines for the use, assembly, and potential hazards associated with the chair.
- Ensure all parts are present and undamaged before assembly. Do not use if any parts are missing or damaged.
- Follow assembly instructions precisely. Incorrect assembly can lead to instability and injury.
- Do not stand on the chair.
- Do not use the chair as a ladder.
- Do not exceed the maximum weight capacity of 136 kg (299 lbs).
- Keep children away from moving parts during assembly and adjustment.
- Regularly check all bolts, screws, and knobs to ensure they are tight.
2. Package Contents
Verify that all components listed below are included in your package. If any parts are missing or damaged, please contact customer support.
- Backrest (1)
- Seat Cushion (1)
- Armrests (2)
- Gas Lift Cylinder (1)
- Gas Lift Cover (1)
- Star Base (1)
- Casters (5)
- Mechanism (1)
- Hardware Pack (Screws, Allen Key) (1)
Image: All components of the DEVAISE Ergonomic Mesh Office Chair laid out, ready for assembly.
3. Assembly Instructions
Follow these steps to assemble your DEVAISE Ergonomic Mesh Office Chair. It is recommended to assemble the chair on a soft, clean surface to prevent damage.
- Attach Casters to Base: Insert the five casters into the holes at the end of each leg of the star base. Push firmly until they click into place.
- Install Gas Lift: Place the gas lift cylinder into the center hole of the star base. Cover it with the gas lift cover.
- Attach Mechanism to Seat: Align the mechanism with the screw holes on the underside of the seat cushion. Ensure the front of the mechanism faces the front of the seat. Secure with screws using the provided Allen key.
- Attach Armrests to Seat: Secure the armrests to the sides of the seat cushion using the designated screws. Do not overtighten initially.
- Attach Backrest to Seat: Align the backrest with the mounting points on the seat and armrests. Secure with screws. Once all screws are in place for the backrest and armrests, tighten all screws firmly.
- Connect Seat Assembly to Gas Lift: Carefully place the assembled seat and backrest onto the gas lift cylinder, ensuring the center hole of the mechanism aligns with the top of the gas lift. Press down firmly to secure.
Image: Rear view of the chair, highlighting the sturdy frame and attachment points for the backrest and armrests.
4. Operating Instructions and Adjustments
Your DEVAISE Ergonomic Mesh Office Chair offers several adjustments to customize your seating experience for optimal comfort and support.
4.1. Seat Height Adjustment
To adjust the seat height, locate the lever on the right side under the seat.
- To raise the seat: Lift the lever while taking your weight off the seat. The seat will rise automatically.
- To lower the seat: Lift the lever while remaining seated. The seat will lower.
4.2. Lumbar Support Adjustment
The Y-shaped lumbar support can be adjusted vertically by 4 cm (1.6 inches) to fit your body's natural curve, reducing fatigue during long working hours.
Image: Close-up of the chair's backrest showing the 4 cm vertical adjustment range for the lumbar support.
4.3. Flip-up Armrests
The armrests can be flipped up 90° to allow the chair to be pushed further under a desk, saving space. Simply lift the armrests upwards until they lock into the vertical position. To lower, pull them down.
Image: The chair demonstrating its armrests in the standard position and flipped up 90 degrees for space-saving.
4.4. Tilt Function
The chair features a tilt function for reclining.
- To enable tilt: Pull the same lever used for height adjustment outwards.
- To lock tilt: Push the lever inwards.
- To adjust tilt tension: Rotate the round knob located under the seat, at the front of the mechanism. Turn clockwise to increase tension (harder to recline) and counter-clockwise to decrease tension (easier to recline).
Image: An illustration highlighting the ergonomic design of the chair, including the S-shaped backrest, adjustable lumbar support, and plush cushion.
5. Maintenance
Proper maintenance will extend the life and performance of your DEVAISE office chair.
- Cleaning:
- For mesh and fabric parts, use a soft brush or vacuum cleaner to remove dust. For stains, gently wipe with a damp cloth and mild soap, then dry thoroughly.
- For metal parts, wipe with a soft, dry cloth. Avoid abrasive cleaners.
- Inspection: Periodically check all screws and bolts to ensure they are tight. Retighten as necessary.
- Casters: Keep casters free of hair and debris to ensure smooth movement.
6. Troubleshooting
If you encounter any issues with your chair, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Chair is wobbly/unstable. | Loose screws or incorrect assembly. | Check and tighten all assembly screws. Ensure the gas lift is fully inserted into the base and mechanism. |
| Seat height adjustment not working. | Gas lift lever not engaged or gas lift cylinder faulty. | Ensure the lever is pulled correctly. If the issue persists, the gas lift may need replacement. Contact customer support. |
| Chair makes squeaking noises. | Loose connections or friction between parts. | Tighten all screws. Apply a small amount of silicone lubricant to moving parts if necessary, avoiding contact with fabric. |
| Casters not rolling smoothly. | Debris caught in casters. | Remove any hair, dust, or debris from the caster wheels. |
7. Specifications
Key specifications for the DEVAISE Ergonomic Mesh Office Chair (Model ABGY501WH).
- Model Number: ABGY501WH
- Brand: DEVAISE
- Color: White
- Material: Metal frame, Mesh back, Fabric seat (mesh fabric), Foam filling
- Product Dimensions (D x W x H): 63 x 62 x 108 cm (24.8 x 24.4 x 42.5 inches)
- Seat Height: 54 cm (21.3 inches)
- Seat Depth: 44 cm (17.3 inches)
- Backrest Height: 44 cm (17.3 inches)
- Item Weight: 11.08 kg (24.4 lbs)
- Maximum Recommended Load: 136 kg (299 lbs)
- Special Features: Ergonomic design, Adjustable lumbar support, Space-saving (flip-up armrests)
- Certifications: BIFMA 5.1, SGS, TÜV
Image: Technical drawing with key dimensions of the chair, including height, width, and depth, and maximum weight capacity.
Image: Diagram illustrating the multi-layer construction of the seat cushion (23D soft foam + 30D high-density foam) and the breathable mesh material of the backrest.
8. Warranty and Support
DEVAISE products are designed for reliability and durability, meeting BIFMA/SGS standards. For any questions, concerns, or support needs regarding your DEVAISE Ergonomic Mesh Office Chair, please contact DEVAISE customer service. Refer to your purchase documentation for specific warranty details.
You can visit the official DEVAISE store for more information: DEVAISE Store
