Electric Standing Desk Instruction Manual

Model: D-THO-4024

Specifications

Height Adjustment Range: 28.7"–48" (73–122cm)

Power Input: 100V–240V

Max. Speed: 24mm/s

Operating Noise: <55dB

Max. Load: 176 lbs / 80 kg

Supplied Parts and Hardware

Step 1: Supplied Parts and Hardware

01 Crossbar (x1)
02 Left Desk Leg (x1)
03 Right Desk Leg (x1)
04 Transmission Rod (x1)
M-A Set Screw (x1)
M-B Bolt (x6)
M-E Small Allen Wrench 3/32" (2.5mm) (x1)
M-F Large Allen Wrench 3/16" (5mm) (x1)

Step 2: Supplied Parts and Hardware

05 Side Plate (x2)
M-B Bolt (x4)
M-F Large Allen Wrench 3/16" (5mm) (x1)

Step 3: Supplied Parts and Hardware

06 Leg Bases (x2)
M-C Screw (x8)
M-F Large Allen Wrench 3/16" (5mm) (x1)

Step 4: Supplied Parts and Hardware

07 Desktop (x1)
A Wood Dowel Pin (x4)
B Desktop Panel Connector (x3)
M-D Screw (x12)
08 Headset Hook (x2)
M-G Screw (x8)

Step 5: Supplied Parts and Hardware

10 Controller Cable (x1)
09 Controller (x1)
11 Cable Clip (x2)

Step 6: Supplied Parts and Hardware

12 Cable Hole Cover (x2)

Assembly Instructions

Setting the Desk Legs to the Same Height

Note: This step may require assistance due to the weight of the components.

Before attaching the transmission rod, ensure both desk legs are at the same height. Insert the transmission rod (04) into the hole in the right leg (03). Turn the rod to adjust the right leg to be level with the left leg. Turn clockwise to lower the right leg or counter-clockwise to raise it.

Step 1: Insert the transmission rod (04) into the left desk leg (02). Secure it with a set screw (M-A) using the small allen wrench (M-E).

Step 2: Attach the crossbar (01) to the desk legs using bolts (M-B) and the large allen wrench (M-F).

Step 3: Attach the leg bases (06) to the bottom of the desk legs using screws (M-C) and the large allen wrench (M-F).

Step 4: Assemble the desktop. Insert wood dowel pins (A) into the desktop (07). Connect the desktop panels using desktop panel connectors (B) and screws (M-D). Attach the headset hooks (08) and the controller (09) to the desktop using screws (M-G). Place rubber pads on the desktop screw holes. Attach the assembled frame to the desktop using the provided screws.

Step 5: Connect the cables. Connect the controller cable (10) to the controller (09) and the motor. Use the cable clips (11) to manage the cables.

Step 6: Install the cable hole covers (12) into the desktop.

Using the Controller

The controller allows for height adjustment and saving of preferred heights.

Raise the Desk: Press the $\uparrow$ button to raise the desk continuously until it reaches the highest position or the button is released.
Lower the Desk: Press the $\downarrow$ button to lower the desk continuously until it reaches the lowest position or the button is released.
Select Height Setting 1: Press the (1) button. The desk will move to the saved height for setting 1.
Select Height Setting 2: Press the (2) button. The desk will move to the saved height for setting 2.
Select Height Setting 3: Press the (3) button. The desk will move to the saved height for setting 3.
Save Current Height Setting: Short-press the (5) button (labeled 'S'). The screen will display 'S-'. Then, press the (1), (2), or (3) button to save the current height to that memory preset. Any button press will stop the desk's movement.

Settings

Reset: Press and hold the $\square$ button until 'rst' is displayed. Continue holding until the desk moves to its lowest position and then slightly upwards. Release the button to complete the reset. If the button is released during the reset procedure, the reset will stop. The desk will not function until the reset is completed correctly.
Child Lock: Press and hold the $\uparrow$ and $\square$ buttons simultaneously for 5 seconds to activate child lock. The screen will display 'LOC', and the buttons will be disabled. Repeat the process to disable child lock.
Settings Menu: Press and hold the $\square$ button for 5 seconds to enter the settings menu. Short-press the $\square$ button to navigate through the menu options. Use the $\uparrow$ or $\downarrow$ buttons to adjust settings. Long-press the $\uparrow$ or $\downarrow$ buttons for rapid adjustment. Press and hold the $\square$ button again to save changes. 'SUS' will be displayed upon successful saving, or 'FAL' if saving fails. The menu will exit automatically after 10 seconds of inactivity.
Power-Saving Mode: The screen will turn off if no button is pressed for one minute. Any button press will reactivate the screen.

Protection Mode Error Codes

Code	Description
SCO	Standby Overvoltage Protection: Standby voltage is too high. Power off the desk, check the power and controller connections, then power on again. Contact technical support if the error persists.
SC1	Power Supply Overvoltage Protection: Input voltage is too high. Ensure the correct AC adapter is used. Power off the desk, check power and controller connections, then power on again. Contact technical support if the error persists.
SC4	Operating Overvoltage Protection: Operating voltage is too high. Power off the desk, check power and controller connections, then power on again. Contact technical support if the error persists.
hot	Overheating Protection: The motor has been operating continuously for too long. Wait at least 18 minutes for the error code to disappear before making further height adjustments.
r-6	Power Supply Overvoltage Protection (during use): Input voltage is too high. The error clears when the power supply voltage returns to normal. Contact technical support if the error persists.
rst	Reset Warning: Continue to complete the reset procedure.
E10	Short Circuit Protection: Power off, check all cable connections, and power on again. Contact technical support if the error persists.
E11	Overloading Protection: Maximum load has been exceeded. The error code will persist for 20 seconds (DO NOT operate). Remove items from the desk and check for mechanical damage before attempting to use it again.
E12	Motor Phase Error Protection: Power off, check the cable connection between the motor and the controller, and power on again. Follow the reset instructions. Contact technical support if the error persists.
E13	Sensor Malfunction Warning: The motor sensor cannot be detected. Power off, check the cable connection between the motor and the controller, and power on again. Follow the reset instructions. Contact technical support if the error persists.
E14	Anti-Collision System Warning: Impact has been detected. The desk will move approximately 2" (50mm) in the opposite direction and stop.
E16	Cable Disconnection Warning: Check motor and controller cable connections. Normal operation should resume once all connectors are properly attached. Contact technical support if the error persists.
E17	Mechanical Failure Warning: Check for any structural damage or motor faults.

Customer Support

Thank you for choosing this product. DUMOS strives to provide the best quality products and service. Should you encounter any issues, please do not hesitate to contact DUMOS customer support.

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