The ASC6050ZK Precise Vacuum UV Exposure Unit is a high-quality device designed for screen printing applications. It features special UV lamps and a built-in vacuum suction system. To use the unit, simply place your screen and printed transparency film on the glass, set the desired vacuum and exposure time, and start the process. The vacuum function removes air from the chamber, ensuring a tight seal between the screen and film. Once the exposure is complete, the unit will automatically release the vacuum. Remember to disconnect the power supply after each use.

Screen printing screens are coated with a light-sensitive emulsion, which is then exposed to UV light with a positive image overlay. The areas exposed to UV light will harden, while the unexposed areas will wash away during rinsing, creating a stencil for ink to pass through onto the substrate.

The vacuum chamber size is 23.6” x 27.6”, but the recommended maximum screen size is 19.7” x 23.6” x 1.6”. Ensure your screen size is compatible before use.

1. Connect the power supply; Turn on the switch of “POWER”;

2. Set the vacuum pumping time

1) Press “VACUUM”, the left indicator light (yellow) is lit up;

2) Press “ + ” or “ – ” in the “TIME CONTROL” area to set the vacuum pumping time according to your needs.
(For first-time users, please put an empty screen in the middle of the rubber inner cavity, just set 40 seconds for test; if the pointer of the vacuum gauge could reach or pass the middle of the green area, that’s ok. If not, please extend the time and test again until having reached the requirement.

3. Set the exposure time

1) Press “EXPOSURE”, the left indicator light (red) is lit up;
2) Press “ + ” or “ – ” in the “TIME CONTROL” area to set the exposure time according to your needs.
(Exposure time varies according to the coated photosensitive emulsion. Please just set 300 seconds for test and then reset a suitable time according to the exposure effect.)

4. Once finished the above settings, you could start exposure just as follows
1) Put the screens coated with photosensitive emulsion and the printed transparency film on the glass.
2) Put the air suction pipe in to the screen;
3) Close the cover and click the “START” button, then it will vacuum pump and expose automatically according to the settings;
4) When the set time is up, it will deflate automatically; Open the cover and exposure is finished. Please just cut off the power supply

5. Functions of other keys
1) “RESET” for cancelling the previous settings: if you want to reset the vacuum / exposure time, just press “VACUUM” / “EXPOSURE” and the left indicator light is lit up; Then press “RESET” and the original settings will turn to “ 0 ”; Next, you could set according to your needs.
2) “BACK” for stop working: if you want to stop vacuum pumping or exposure, just press the “BACK” button, that’s ok.

1. If the digit was not displayed once turned on the switch

a. Please check whether the power supply is good or not

b. Please check whether the bottom fuse wire is loose, burned-out or not

2. If the vacuum pump didn’t work after putting the screen on the glass, closing the cover and pressing the “STRAT” button:

Please check whether the leading wire of the vacuum pump is well connected or not

3. If it didn’t reach the requirement even the vacuum pump works well

a. please checks whether the air suction pipe is well fastened or not

b. Please check whether the rubber blanket and its edgings were good and seal or not.

If there were some splits on the rubber blankets or edgings, or some cracks of the edging adhesives, please fix them up with the sealing adhesive.

4. If the lamps were not lit up

a. Please check whether your voltage was too low or not

b. Please check whether the lamp ends were blackened or not caused by lamp ageing

c. Please check whether your set exposure time was 0 second

d．Please check whether the ballast was broken or not.

1) Please cut off the power supply when you need to change the lamp or the ballast 2) Avoid contact with hard objects to prevent glass surface scratching 3) Consistent cleaning is needed according to your using frequency and operational environment, especially for the glass, vacuum rubber blanket and edgings

• Vacuum Exposure Unit * 1