1. Introduction
Thank you for choosing the Maclean MC-835 Electric Height Adjustable Computer Desk. This desk is designed to provide a versatile and ergonomic workspace, allowing seamless transitions between sitting and standing positions. This manual provides essential information for the safe assembly, operation, and maintenance of your new desk.

Angled view of the Maclean MC-835 Electric Height Adjustable Computer Desk.
2. Safety Information
Please read all safety instructions carefully before assembly and use. Failure to follow these instructions may result in injury or damage to the product.
- Weight Limit: Do not exceed the maximum weight capacity of 37 kg (81.5 lbs). Overloading can cause instability and damage.
- Collision Avoidance: The desk is equipped with a collision avoidance system. However, always ensure there are no obstructions (walls, chairs, cables, etc.) in the desk's path during height adjustment to prevent damage or injury.
- Children and Pets: Keep children and pets away from the desk during operation.
- Power Supply: Use only the provided power adapter. Ensure the power cord is not pinched or damaged.
- Stability: Ensure the desk is placed on a level surface. Do not sit or stand on the desk.
- Maintenance: Do not attempt to disassemble or repair the desk yourself. Contact qualified service personnel for repairs.
3. Package Contents
Verify that all components are present before beginning assembly. If any parts are missing or damaged, contact customer support.
- Desktop Surface
- Keyboard Tray
- Electric Lifting Column
- Base Feet (2x)
- Control Panel
- Power Adapter and Cable
- Assembly Hardware (screws, Allen keys, etc.)
- Cable Management Clips (optional)
4. Setup and Assembly
Follow these steps to assemble your Maclean MC-835 desk. It is recommended to have two people for assembly.
- Unpack Components: Carefully remove all parts from the packaging and lay them out on a clean, soft surface to prevent scratches.
- Attach Base Feet: Secure the two base feet to the bottom of the electric lifting column using the provided screws. Ensure they are firmly tightened.
- Mount Desktop: Place the desktop surface upside down on your soft surface. Align the lifting column assembly with the pre-drilled holes on the desktop and secure it with the appropriate screws.
- Install Keyboard Tray: Attach the keyboard tray to the designated brackets under the desktop. Ensure it slides smoothly.
- Connect Control Panel and Power: Mount the control panel to the front edge of the desktop. Connect the control panel cable and the power adapter cable to the lifting column's control box. Plug the power adapter into a wall outlet.
- Cable Management: Use the included cable management clips to organize and secure all cables, preventing them from getting caught during height adjustments.

Detailed diagram illustrating the dimensions and key components for assembly.

Visual representation of the desk's base and column assembly.
5. Operating Instructions
Your Maclean MC-835 desk features an intuitive control panel for easy height adjustment and personalized settings.
5.1. Basic Height Adjustment
- Up/Down Buttons: Press and hold the Up or Down arrow buttons on the control panel to raise or lower the desk to your desired height. Release the button to stop.
5.2. Memory Presets
The desk allows you to save up to three preferred height positions for quick adjustments.
- Adjust the desk to your desired height using the Up/Down buttons.
- Press the M button. The display will show 'S-'.
- Within 3 seconds, press one of the number buttons (1, 2, or 3) to save the current height to that preset. The display will show 'S-1', 'S-2', or 'S-3' to confirm.
- To recall a saved height, simply press the corresponding number button (1, 2, or 3). The desk will automatically move to the saved position.
5.3. Timer Function (Sit-Stand Reminder)
The timer function reminds you to change your working position at regular intervals.
- Press the T button to activate the timer. The display will show a countdown (e.g., '45' for 45 minutes).
- When the timer reaches zero, the desk will emit a reminder sound, prompting you to switch between sitting and standing.
- Press any button to clear the reminder.
5.4. Collision Avoidance System
The desk is equipped with a sensor that detects resistance during height adjustment. If an obstruction is encountered, the desk will stop and slightly reverse direction to prevent damage. Always be vigilant and clear the area around the desk during operation.

Close-up view of the control panel, showing buttons for height adjustment, memory presets (1, 2, 3), and timer (T).

The Maclean MC-835 desk set up in an office environment, demonstrating its use with a computer.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your desk.
- Cleaning: Wipe the desk surfaces with a soft, damp cloth. Avoid abrasive cleaners or harsh chemicals.
- Check Connections: Periodically check all screws and bolts to ensure they are tight. Re-tighten if necessary.
- Cable Inspection: Inspect the power cable and other connections for any signs of wear or damage. Replace if necessary.
- Lubrication: The lifting mechanism is generally maintenance-free. Do not apply lubricants unless specifically instructed by the manufacturer.
7. Troubleshooting
If you encounter issues with your desk, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Desk does not move | No power; Loose cable connection; Overload | Check power outlet and connections. Ensure desk is not overloaded (max 37 kg). |
| Height settings not saving | Incorrect saving procedure | Follow the memory preset instructions carefully (Section 5.2). Ensure you press the number button within 3 seconds after pressing 'M'. |
| Desk stops unexpectedly during adjustment | Collision avoidance system activated; Obstruction | Check for any objects obstructing the desk's movement. Remove obstructions and try again. |
| Unusual noise during operation | Loose components; Motor issue | Check all assembly screws and tighten if loose. If noise persists, contact customer support. |
If the problem persists after attempting these solutions, please contact Maclean customer support for further assistance.
8. Specifications
- Brand: Maclean
- Model: MC-835
- Type: Electric Height Adjustable Computer Desk
- Height Adjustment Range: 72 cm - 122 cm (28.3 inches - 48.0 inches)
- Desktop Dimensions: Approximately 80 cm (width) x 40 cm (depth)
- Keyboard Tray Dimensions: Approximately 79.3 cm (width) x 24.7 cm (depth)
- Maximum Weight Capacity: 37 kg (81.5 lbs)
- Material: Alloy steel base, durable desktop surface
- Color: Black
- Special Features: Memory function (3 positions), Timer function, Collision avoidance system

Detailed dimensions of the Maclean MC-835 desk, including height range, desktop, and keyboard tray measurements.
9. Warranty and Support
For warranty information, product support, or to report any issues, please contact Maclean customer service directly. Refer to your purchase documentation or the official Maclean website for contact details.
Please retain your proof of purchase for warranty claims.