SIHOO DORO-C300L-A3 Ergonomic Office Chair Installation Guide

June 14, 2024
SIHOO

SIHOO DORO-C300L-A3 Ergonomic Office Chair

Specifications

Product Installation Guide

Hello Friend,

  • Thank you for choosing SIHOO office chair.
  • If you need an installation video, you can go to our official website sihoooffice.com.
  • The chair comes with product warranty service. If there is any problem with the chair, please contact our after-sales service department on SIHOO store immediately, and believe that they will provide you with a satisfactory solution. If the chair meets your needs, welcome to share your feelings.
  • Please feel free to contact us via the following email: service@sihoooffice.com
  • Thank you for being one of our customers. We love our customers, if you need us, we will always be here.

User Manual

Assemble Introduction
The size will be according to regular measurements

  1. Attaching the five chair leg tubes to the base with ten chair leg screws before inserting the wheels(Tap the screw with a T-wrench and then tighten it).
  2. Place the gas lift and decorative cover in the middle hole of the feet of the chair.
  3. Connect the mechanism and the cushion with 4 mechanism screws(M6*14) with small shims, be reminded to distinguish the front and rear of the mechanism before tightening the screws.
  4. Place the cushion, chassis, and footrest assembly in line with the chassis holes and apply the air pressure bar.
  5. Attaching the handrail to the handrail bracket with four M6*30 screws, spring spacers, and small shims and handrail tube spacers.
  6. Insert the seat back into the chassis tailpiece of the cushion, chassis, and footrest assembly.
  7. Attach the seat back with 2 x M6*16 screws.
  8. Put the seat back trim cover on.
  9. The armrests are first attached to the back linkage with four M878 screws and four big shims, then the seat back and chassis tail plate are attached with three M820 screws and three big shims.
  10. Insert the headrest into the back of the chair and attach it with 2 M6*16 screws. Put the back trim cover on and the chair is complete.

Functions

The size will be according to regular practice

  • Adjustable headrest with lift and swivel.
  • Backrest can be adjusted up or down in 4 positions.
  • Armrests adjustable upwards, inward/outward rotation of armrest angle, forward/backward adjustment.
  • Raise up the handle to adjust the up and down of the chair. Pull out the handle to adjust the three angles of recline, push in to lock the recline angle.

Safety Instructions

  1. One chair can only bear one person’s weight.
  2. Please use on the flat floor.
  3. Not allowing the child under 5 years old to sit on the chair alone.
  4. Please don’t sit on the armrest, in case cause some danger.
  5. Do not stand on the chair or use it as a ladder or footsteps.
  6. Please don’t put overweight on the chair, or used as trolley.
  7. Don’t use sharp or hooked objects to scrape the chair and do not get it close to the fire.
  8. For your safety, no disassembly to the gas lift is allowed.

FAQ

  • Q: Where can I find an installation video?
    • A: You can find the installation video on our official website sihoooffice.com.
  • Q: How can I contact the after-sales service department?
    • A: You can contact our after-sales service department on SIHOO store immediately. Please refer to the contact information provided above.
  • Q: Can I sit on the armrest?
    • A: No, please do not sit on the armrest as it may cause danger.
  • Q: Can I disassemble the gas lift?
    • A: No, for your safety, no disassembly to the gas lift is allowed.

Model:DORO-C300L-A3

Hello Friend,

  • Thank you for choosing SIHOO office chair.
  • If you need an installation video, you can go to our official website sihoooffice.com.
  • The chair comes with product warranty service. If there is any problem with the chair, please contact our after-sales service department on SIHOO store immediately, and believe that they will provide you with a satisfactory solution. If the chair meets your needs, welcome to share your feelings.
  • Please feel free to contact us via the following email: service@sihoooffice.com
  • Thank you for being one of our customers. We love our customers, if you need us, we will always be here.

SIHOO

CAUTION !
Work on gas springs only by trained specialist personnel.

User Manual

Assemble Introduction (The size will be according to regular

measurements )

SIHOO-DORO-C300L-A3-Ergonomic-Office-Chair- \(1\)

  1. Attaching the five chair leg tubes to the base with ten chair leg screws before inserting the wheels(Tap the screw with a T-wrench and then tighten it);
  2. Place the gaslift and decorative cover in the middle hole of the feet of the chair;
  3. Connect the mechanism and the cushion with 4 mechanism screws(M6*14) with small shims, be reminded to distinguish the fronnt and rear of the merchansim before tightening the screws. SIHOO-DORO-C300L-A3-Ergonomic-Office-Chair- \(2\)
  4. Place the cushion, chassis and footrest assembly in line with the chassis holes and apply the air pressure bar;
  5. Attaching the handrail to the handrail bracket with four M6*30 screws, spring spacers and small shims and handrail tube spacers;
  6. Insert the seat back into the chassis tailpiece of the cushion, chassis and footrest assembly SIHOO-DORO-C300L-A3-Ergonomic-Office-Chair- \(3\)
  7. The armrests are first attached to the back linkage with four M878 screws and four big shims, then the seat back and chassis tail plate are attached with three M820 screws and three big shims;
  8. Insert the headrest into the back of the chair and attach it with 2 M6*16 screws; Put the back trim cover on and the chair is complete.

Pls read the Safety Instructions below carefully.

  1. One chair can only bear one person’s weight;
  2. Please use on the flat floor;
  3. Not allowing the child under 5 years old to sit on the chair alone;
  4. Please don’t sit on the armrest, in case cause some danger;
  5. Do not stand on the chair or use it as a ladder or footsteps;
  6. Please don’t put overweight on the chair, or used as trolley;
  7. Don’t use sharp or hooked objects to scrape the chair and do not get it close to the fire;
  8. For your safety, no disassembly to the gas lift is allowed.

Functions (The size will be according to regular practice)

SIHOO-DORO-C300L-A3-Ergonomic-Office-Chair- \(4\)

Parts list (The size will be according to regular measurements; One more as a backup )

SIHOO-DORO-C300L-A3-Ergonomic-Office-Chair- \(6\) SIHOO-DORO-C300L-A3-Ergonomic-Office-Chair- \(7\)

Notice: Before installation, pls classify the screw, measure the screw length for easy assemble

Siegel

  • 1335 -1/-2:2 018 Büro-Arbeitsstuhl
  • 16955:2 017 Gasdruckfeder
  • 12529 Laufrollen

Help Center

About Products

  • Q: The backrest mesh is broken.
    • A: Please contact us, and we will arrange the delivery of a eplacement.
  • Q: The chair is too short for me.
    • A: Please adjust it to the maximum height to see if it’s suitable for you. If not, we recommend changing the gas lift.
  • Q: What if I receive a damaged or incorrect product?
    • A: If you receive a defective, incorrect, or incomplete product, please contact us immediately and keep all items and packaging materials until your claim is resolved. If your replacement product is out of stock, we will notify you immediately of the estimated arrival date and work with you to suggest a suitable replacement product.
  • Q: I hear noises when sitting on the chair.
    • A: Please check if all parts of the chair have been installed tightly. If not, there might be a problem with the mechanism, and we recommend you send us a video for further evidence first.
  • Q: Why would the armrest shake?
    • A: Please check whether the screws are tightened enough first, then check the shaking of the armrest pad.
  • Q: The backrest shakes.
    • A: The backrest might not be installed tightly. It’s recommended to reinstall it first.
  • Q: There is an abnormal odor when the chair is taken out of the box.
    • A: Please leave the chair in an airy room for 2-3 days before use.
  • Q: There are scratches or cracks in the backrest or other parts.
    • A: We hope this does not affect the normal use of the chair, and you can consult us for the replacement of the flawed parts.
  • Q: There are missing parts in this order.
    • A: In this case, please inform us which parts are missing with your order number and offer us a photo of all the parts you currently have. Then we will report this to the factory and arrange the delivery  or work with you to find a satisfactory solution.
  • Q: The chair makes me uncomfortable, but I cannot find where the problem is.
    • A: We are sorry to hear that you are having an unsatisfactory user experience. Please kindly send us a photo or video of where the problem might lie. This way, we can better locate the problem and offer you a solution.

About Delivery

  • Q: What is the estimated delivery time?
    • A: Home delivery within the continental U.S. usually takes 3-8 days.
  • Q: The product has not been delivered.
    • A: We apologize for the inconvenience caused. Due to COVID-19, shipping may experience delays. Please be patient, and we will keep track of it with you.
  • Q: The product fails to be dispatched.
    • A: Please contact us, and we will confirm your address again. Then we will report this to the DPD.
  • Q: The shipping information has not been updated.
    • A: Due to a large quantity of orders, it might take some time before the information is fully updated. Your patience is highly appreciated.
  • Q: There are scratches or cracks in the backrest or other parts.
    • A: We hope this does not affect the normal use of the chair, and you can consult us for the replacement of the flawed parts.

About Orders

  • Q: Can I cancel my order?
    • A: For items that have not been delivered or items with delayed delivery, canceling the order will be accepted. Inventory items are usually shipped within 24-48 hours after an order is placed. Once the  items are shipped, they cannot be canceled.
    • *Orders of customized or special items cannot be canceled.
  • Q: My order is lost during delivery.
    • A: Please contact the responsible logistics center and report detailed information to them for compensation. If you need any help concerning this, feel free to contact us.

References

Read User Manual Online (PDF format)

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Download This Manual (PDF format)

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