Dupont Artistri Xite P1520 Загальні технологічні інструкції - Сторінка 3

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Maintenance and Troubleshooting

Standard printer maintenance:

Clean daily:

• Waste ink drain bottle (when starting the day)

• Flushing stage

• Front roller

• Printing table and media guides

• Front and rear dancing bar

• Capping unit and its surroundings

• Wipers (when finishing the day)

• Print nozzle checks on paper (if possible) daily to monitor

printer and nozzle status

Clean weekly:

• Head baseplate

• Machine's exterior

Clean monthly:

• Machine's interior

• Encoder strip

• Capping unit (deep cleaning)

Bear in mind that the following maintenance periods are

suggestions. Maintenance intervals mostly depend on

printer usage, the type of fabrics, and the cleanliness of the

surrounding environment. If the unit is heavily used (16-24

hours run for example), with fabrics with heavy coatings, or in

dusty environments, we would recommend the user increase

maintenance frequency. Always follow manufacturer's

suggested maintenance.

Troubleshooting Tips:

• Missing nozzles after an ink changeover should come back

with time. It is best practice to perform multiple purges and let

the new ink sit overnight so that air settles out of the system.

• Initial jetting sustainability may be poor as air works its way

out of the system. This can be overcome by printing at slower

speeds before ramping up to normal printing speeds.

• After an ink change, ensure filters are free of trapped air.

If air entrapment occurs and restricts ink flow, bleed air as

necessary.

• Severe starvation may be a symptom of restricted flow

through the last chance filters. Additional replacement of the

last chance filters may be required.

• Do not over-exercise the print heads if you observe starvation

symptoms as this will affect the life of the printhead. If this

occurs, verify all filters and ink feed lines are free of trapped

air, then check the negative pressure setting.

• If the machine is misting, this could be caused by excessive

print gap. Check the print gap to make sure you have the right

height.

• Nozzle plate wetting or dripping from the print head could

be caused from air in the ink lines or not having the negative

pressure set correctly.

• If banding and/or misdirects occur, check the alignment of the

printer and purge the print head.

Technical Data

Storage Temperature and Shelf Life

It is recommended that Artistri

be stored in sealed containers in a clean, dry area, with

temperatures regulated between 10 – 40°C (50 – 104°F). Improper

storage temperatures or storage of open ink containers in

dusty, ambient conditions may shorten the ink's shelf life. When

properly stored your DuPont inks should last at least 12 months.

Ink Physical Properties

The table below lists the pertinent physical ink parameters of the

Artistri

Xite P1500 CMYK inks.

Physical Properties

pH, as made

7.0 – 9.0

Viscosity 25°C (cP)

3.0 – 5.0

Surface tension (mN/m)

23 – 29

Jetting Properties

1. De-gassing

DuPont recommends de-gassing ink to achieve <2ppm dissolved

oxygen.

2. Effect of Head Temperature on Viscosity

These inks have been extensively tested on Epson print heads

operation at 25°C. Some customers prefer higher operating

temperatures. Keep in mind that higher operating temperatures

accelerate evaporation of volatile components and may affect

latency and increase maintenance frequency. The graph below

can be used to aid your selection of operating parameters for

your print head.

5.0

4.5

4.0

4.5

3.0

2.5

2.0

Xite P1500 Pigment Inks

P1510

P1520

P1530

7.0 – 9.0

3.0 – 5.0

23 – 29

Temperature (°C)

n P1540

7.0 – 9.0

3.0 – 5.0

23 – 29