Digitus DA-90387 User manual

Electric Height-Adjustable
Variable Stand / Sit Desk Frame
USER MANUAL
DA-90387
Rated Voltage: 100-240v
Continuous Working 2 Minutes, rest at least 18 minutes.

CAUTION / INFORMATION
IMPORTANT: Please read this manual carefully
1. This height adjustable desk has electric motors and is
designed for use in dry work areas only.
2. Make sure no obstacles are in the desk’s path.
Make sure the desktop is not touching any walls.
Make sure all cords are appropriate length to accommodate
the change in height.
3. Do not sit or stand on the desk frame.
Do not crawl or lie under the desk frame.
4. Do not place any objects taller than 20” underneath the desk.
5. Do not open any of the components – the legs, control box or
switch.
6. Make sure that the power supply is between 110V and 240V
before plugging the control box into it.
7. This product is designed with a duty cycle of 10%
(2 min. on, 18 min. off).
8. Under no circumstances does the manufacturer accept
warranty claims or liability claims for damages caused from
improper use or handling of the desk frame.

Tools Required
Hexagonal Wrench 2.5mm, 4mm, 5mm
Screwdriver (Prepared Yourself)
Hardware
A. M6x20 (8)
B. M6x14 (18)
C. ST4.8x19 (10)
D. ST3.5x19 (3)
E. Desktop Gaskets (6)
F. Hexagonal Wrench 2.5mm
G. Hexagonal Wrench 4mm/ 5mm
H. Clips (4)
I. Adjustable Feet (4)
J. Controlbox (1)
K. Keypad (1)
L. Power Cord (1)

Part Diagram
No. Description Qty
1 Crossbar Assembly 1
2 Legs 2
3 Feet 2
4 Adjustable Foot 4
5 Transmission Bar 1
6 Desktop Bracket 2
7 Keypad 1
8 Controller 1

Installation Step
1. Loosen Crossbar.
Loosen the screw and adjust the length of the table to expose
the mounting holes on the side of the side.

2. Assembly Left/right Legs
3. Attach the desk feet

4. Attach the desktop bracket
5. Assembly the Transmission Bar
Loosen the screws of the hexagonal tube
Insert transmission bar
Adjust the length according the size of desktop
Tighten the screws on the hexagonal tube.
Insert the desk gasket on the desktop bracket.

6. Fit the desktop on the frame

7. Connection and installation of Control box and
keyboard
1. Plug cables from the motor to the control box.
2. Plug the cable from the keyboard to the control box.
3. Plug the power cable to the other side of control box.
4. Use the ST 4.8*16 screws fix the keyboard and control
box under the desktop.
8. Complete the installation, need two people carry the desk and
put it in the right place.

Digital Keyboard Manual
1. Overview
Main features of the programmable Keyboard are showed in the
figure below:
M:Store Memory Key
Memory Position Key 1
Memory Position Key 2
Memory Position Key 3
Memory Position Key 4
8.8.8 Height Display
Arrow 1 Desktop Up Key
Arrow 2 Desktop Down Key

2. Keyboard Function and Operation
Function Description Note
Desktop
Up Key
Desk
Upwards
For an upward
adjustment of the
desk push this
button.
Push this button
until the desired
height of the desk
has been reached.
The desk will
continue driving
upwards until you
release the button, or
the maximum height
is reached
Desktop
Down
Key
Desk
Downwards
For a downward
adjustment of the
desk push this
button.
Push this button
until the desired
height of the desk
has been reached.
The desk will
continue driving
downwards until you
release the button, or
the minimum height
is reached
3. Reset Procedure
IMPORTANT: You must reset the desk prior the use.
Make sure no obstacles are in the desk’s path.
Make sure the desktop is not touching any walls.
Make sure all cords are appropriate length to accommodate the
change in height.
a. Press the "UP" and "DOWN" at the same time for 3 seconds
until the display show "RES ", and the system will make a
sound beep, reset is complete.

b. If the Position of desktop is not at the lowest height. Please
press the "UP" and "DOWN" at the same time until the desk
reaches its lowest height, and the system will make a sound
of beep, reset is complete.
4. Storing a Position
You can use this function to adjust the desktop to a saved height
with 4 positions.
If you are switching on the control unit for the first time, all the
saved position are set to the lowest desktop height, to change to a
saved position proceed as follows:
a. Press the UP or DOWN key to adjust the desktop to the
desired height, the display will show the desktop height.
b. Press and hold the "M" Key for 3s until the numbers on the
display started flashing.
c. Press memory position Key 1 to save the desk position in
memory.
d. The display will read "P 1" the memory position number you
saved.
The other position may be stored in the same way.
The desk base can be adjusted by pressing and holding either the
UP or DOWN button until the desired height is reached.
To program up to four presets: Use the up/down buttons to find a
desired height, then press "M" followed by a number 1 - 4.
CAUTION:
Once a preset button is pushed, the desk will move to the
programmed height.

5. Switch the unit between CM and Inch
The height unit can be switched between CM and Inch, check
the proceed as follows:
a. Press the "M" and "1" at the same time for 3 seconds.
b. Display started flashing and read "C-E".
c. Press "1" within 10 seconds, the display show "C", and
switched the unit to CM; Press "2", the display show "E",
and switched the unit to "inch".
d. The display stopped flashing, and the switch the unit
between CM and Inch is complete.
6. Setting the LED retracted height
Press the DOWN button on the memory controller until the frame
reaches its lowest position. Measure the height of the frame from
the floor and see if the height showed on the LED display does
match your measurement or not, if you need to revise the height
which showed on display, follow these steps to set:
a. Press and hold the DOWN button (about 5 seconds)
until the LED displays the flashing starting height.
b. Press the UP or DOWN button to increase or decrease
the height (1 unit / click).
c. Then press "M" and stop flashing, your desk is now ready
to use.
Note: the LED display has a 0.1 tolerance.
7. Trouble Shooting
Below are the possible errors which can be displayed. The errors
will only be displayed when a button is pressed.

Display
Readout
Trouble
Description Resolve
E01
Lifting speed of
two legs is not
able to lift at
same position.
please check all the wired connection
are secure , including legs to cable, and
cables to control box.
E04 desk Leg 1 was
overloaded
Make sure the loading capacity of desk
is less then 250lbs, and then reset the
desk.
E08 desk Leg 2 was
overloaded
Make sure the loading capacity of desk
is less then 250lbs, and then reset the
desk.
E10
Leg 1 has
collision and
rebounded
The desk will automatically stop and
bounce back 2 cm. Perform the reset
procedure outlined in the Digital
Memory. Controller section
E20
Leg 2 has
collision and
rebounded
The desk will automatically stop and
bounce back 2 cm. Perform the reset
procedure outlined in the Digital
Memory. Controller section.
HOT MOTOR OVER
HEATED
Let the base cool down for 18 minutes.
For urgently using, try to re-plug to
re-start the system.
Remark: If your desk is not functioning properly, it may need to be
reset or restarted.
Hereby Assmann Electronic GmbH, declares that the Declaration of Conformity
is part of the shipping content. If the Declaration of Conformity is missing, you
can request it by post under the below mentioned manufacturer address.
www.assmann.com
Assmann Electronic GmbH
Auf dem Schüffel 3
58513 Lüdenscheid
Germany