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How to maintain the UV flatbed printer head

The uv flatbed printer head nozzles will be easily damaged or blocked if the customer doesn’t know how to do the maintenance of it, which always happens to the new customer who buys the UV printer flatbed and never used it before. We should be aware that the best way to keep the print head nozzles in perfect condition is to keep doing the daily maintenance of the head, too avoid the nozzle clogging problem as far as possible. 
 
uv flatbed printer size

The following are some steps:

1. Print head maintenance at the beginning of the machine installation

In order to make the print head nozzles achieve to the best working condition, had better use one or two days to do the printing test as far as possible and let the head get used to the printing job and try to use all the nozzles for printing. Had better choose the picture which needs to use all the CMYK+W for printing and keep CMYK+W nozzles are always working during the test. 

2. Print head maintenance after daily work

After all the printing jobs are finished every day, please follow the below steps, in order to keep the keep the head nozzles in good working condition and avoid the nozzle clogging problem due to the volatilization of UV ink. 
 
2.1. Turn off the UV printer;
2.2. Clean the surface of the cap top and remove any dirt on it and keep it moist;
2.3. Move the cart to the right side, back to the capping system position, and keep the cap top seal with the print head complete;
2.4. Keep the head in that condition for overnight; 
2.5. Next day before printing should check the nozzle test till it’s perfect, or don’t print, yet fix the problem. 

3. The solution of head nozzle slightly clogging problem

Every day before printing or during the printing, shouldn’t print or stop the printing immediately once find there’s color missing, line breaks. 

4. the treatment method after the nozzle is slightly blocked

4.1. After the nozzle is found to have a slight clogging phenomenon, press the PAUSE button to pause the printing operation without hesitation. Then use a syringe or a manual air pump to spray the ink from the nozzle to clean the nozzle. After cleaning, use a plastic squeeze bottle. Spray some cleaning solution onto the nozzle surface to wash away residual ink.
 
Note: Do not use excessive force when using the manual air pump, otherwise the nozzle will be damaged due to excessive pressure.
 
4.2, timely and decisive and thorough handling of the nozzle slightly blocked is very important to maintain the best working state of the nozzle during long-time printing!
 
4.3. In addition, it is also necessary to carefully check the condition of the nozzle and find out the cause of the nozzle blockage.

5.  the equipment is expected to be used for more than 48 hours when not in use

If the equipment is expected to be used for more than 48 hours, the ink in the nozzle must be cleaned. Otherwise, the ink in the nozzle will dry out due to the evaporation of the solvent, which may cause irreversible damage to the nozzle. The processing method is as follows:
 
5.1. Turn off the power of the UV flatbed printer.
 
5.2. Move the handpiece to the leftmost cleaning position and place a corrosion-resistant container under the nozzle to hold the cleaning waste.
 
5.3. Use a glass syringe to extract or directly pour out the ink in the sub-tank, and then wash the sub-tank with a special cleaning solution.
 
5.4. Unplug the ink supply tube on the nozzle, and then use a glass syringe to extract 40ml of special cleaning solution to clean the nozzle for 2 times. Finally, do not blow off the residual cleaning liquid in the nozzle. Be sure to leave enough cleaning liquid inside the nozzle because the cleaning solution can moisturize the nozzle.
 
5.5. Put the treated nozzle into a clean and corrosion-resistant container and seal it (it is good to use plastic wrap). It can be stored for about 1 month.
 
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