Leaving a DTF printer idle: overnight, weekends, holidays and long storage

A few hours (lunch, a slow afternoon)

• Leave the head parked on the cap. Uncapped nozzles can start drying in about 30 minutes.
• Before the next job, rock the white gently and print a purge strip (Printer tab → Maintenance → Add purge strip).
• Some users refresh the white dampers with a syringe after about 4 hours or more. Do it if your white is often weak after breaks.

Overnight and up to 2 days

• Do the normal end-of-day routine: swab cap and wiper, wet the cap, let the head park, cover the printer.
• If you have a stirrer or circulation, leave it on a timer.
• Next morning: agitate the white, rock the dampers and pull 1–2 ml from the waste line, then print the purge strip.

3 to 7 days

• Something has to move the white at least every 2 days. Ask someone to print a purge strip, or let ZoroPrint do it (below).
• If nobody can and the printer will be off, flush the white channels with cleaning solution before you leave.
• Restarts after 5–7 days without either often show several clogged channels.

ZoroPrint keep-alive

In Expert mode, Printer tab → Maintenance, tick “Keep white ink moving while idle” and choose the hours (2–72, default 8). After that long with no print, the app prints a 60 × 3 mm white strip per white channel, about 0.02 ml each. For a weekend or a week, 24–48 hours is a sensible setting. It only works with the app open, the printer on and enough film loaded for the strips. It moves white through the nozzles; it does not stir the bottle or clean the cap.

More than 7 days, or storage

1. Run the stirrer or circulation for 15–20 minutes, then print a last purge strip.
2. Replace the white in the lines and dampers with cleaning solution: fill the white tanks or cartridges with it and pull it through with the syringe on the waste line until it runs clear. Leave the system filled with it.
3. Clean the cap and wiper, then park the head on capping solution.
4. Store the white bottles sealed, out of light, at 15–25 °C. Leave the stirrer on a timer for any bottle still connected.
5. Cover the printer. Keep the room from freezing and from going above about 30 °C.

Restarting after a long break

1. Drain the cleaning solution from the white tanks.
2. Refill with white you have just agitated (bottles 30–60 s end over end).
3. Prime the white dampers from the waste line until white flows.
4. Print a Nozzle check. Run one Head cleaning at a time and check after each. After 2–3, stop and look at the cap and dampers.
5. Epson recommends waiting 12 hours between Power Cleanings. Many restarts succeed the next morning without more ink.

Room while you are away

• Humidity 40–60 %. Heating left on in winter dries the air; a cheap humidifier on a timer helps.
• No direct sun on the printer, and no frost. Both damage ink in the lines.
• Empty the waste bottle before you leave.