How to Clean the UV-LED Devices

IMPORTANT:

Important notes on this procedure

  • Before performing this operation, remove any objects to be printed on.

  • To prevent the print heads from drying out, finish this procedure in 10 minutes or less. A warning beep sounds after 10 minutes.

  • The cloths, alcohol, and similar items used in cleaning are not included with the product.
When a warning beep sounds during cleaning

  • A warning beep sounds 10 minutes after operation starts. Stop work, close all the covers, and then press [ENTER] to end the manual cleaning mode. After that, restart the procedure from the beginning.

Table 1.
Required items






Anhydrous ethanol or isopropyl alcohol Cloth (that is not fluffy) Rubber gloves
CAUTION:

Do not perform cleaning immediately after printing has finished (wait approximately 15 minutes).

The area around the UV-LED device is hot and may cause burns.

CAUTION:

When using anhydrous ethanol or isopropyl alcohol, be sure to follow the product's usage precautions.

Exercise caution regarding items such as fire, ventilation, and rashes.

CAUTION:

Only use anhydrous ethanol or isopropyl alcohol.

Using chemicals (or similar substances) other than anhydrous ethanol or isopropyl alcohol may lead to UV-LED device damage.

CAUTION:

Use cloth that is not fluffy to wipe off the parts. Do not use a hard material such as metal.

Using cloth that is fluffy or a hard material such as metal may lead to UV-LED device damage.

Procedure
  1. Remove the object to be printed on.
  2. Move the print-head carriage.
    1. Press [MENU].
    2. Press [▼] several times to display the screen shown below.


    3. Press [▶] once, and then press [▼] several times to display the screen shown below.


    4. Press [▶] to display the screen shown below.


    5. Press [ENTER].
      After "NOW PROCESSING.." is displayed and the print heads move, the screen shown below appears.


  3. Open the front cover.
  4. Open the maintenance cover.
    Remove the screw on the top of the maintenance cover, tilt the maintenance cover forward slightly, and then pull out the maintenance cover in the direction indicated by the arrow.


    The screen shown below appears.


    IMPORTANT:

    Do not press [ENTER] at this stage. Press [ENTER] after cleaning is complete. If you press [ENTER] at this stage, the screen shown below is displayed. Select "NO" and start over from the beginning.



  5. Touch the location shown in the figure to discharge any static electricity.


  6. Wet a cloth with anhydrous ethanol or isopropyl alcohol, and then wipe off the base and irradiation surface of each UV-LED device with this cloth.
    Wipe the cloth across each UV lamp for approximately 10 round trips until all the dirt is cleared away.


  7. When you have finished cleaning, close the maintenance cover.
  8. Close the front cover.
  9. Press [ENTER].
    The screen shown below appears.


    Perform head refreshing in the following situations.

    • After daily operations.
    • When the message "DO HEAD REFRESH" appears.
    • When dot drop-out or dot displacement occurs.
    • After the "manual cleaning" process (the head refreshing menu is displayed automatically).
    • When an emergency stop occurs.
    • When switching on the main power and sub power after the main power was previously switched off.

    If head refreshing is not necessary, select "NO". When the following screen is displayed again, UV-LED device cleaning is finished.