UV Maintenance Guide

• NUtec CMF Cleaning Solution
• Lint free cloths
• Swabs

This guide is extremely important to follow on a day to day basis by the customer. It outlines how to manage the inks on a daily, weekly, and longer basis, which includes shutting down of the machines during these periods.

**Start up, all COLOURS, WHITE & CLEAR:**
• Switch printer ON and let machine condition for +15 minutes to allow ink to warm up (sub tank and print head).
• Purge heads (×2) and wipe with lint free cloth – DO NOT use flush on cloth.
• Perform nozzle status.

**During the day, if required, all COLOURS & CLEAR:**
• Purge heads and wipe with lint free cloth – DO NOT use flush on cloth.
• Perform nozzle status.

**During the day, WHITE:**
• Purge heads and wipe with lint free cloth – DO NOT use flush on cloth.
• White ink must be purged during start‑up in the morning every day.
• NOTE: Do not close white ink line valves and do not de‑activate spitting or other automated standby or maintenance functions.
• NOTE: White ink line must be purged every day at 4‑hourly intervals, even if white is not being printed.
• Perform nozzle status.

NOTE: It is important to maintain a good nozzle status. If nozzles are missing, ensure they are recovered immediately. If this is not done, nozzles may become permanently blocked. If you are unable to recover the nozzle status, contact your dealer immediately.

NOTE: NUtec does not recommend the use of capping systems that have direct contact with the nozzles on the face plate of the print heads (e.g. cling film, sponges, foam rubber, lint‑free cloth). Systems that seal only around the perimeter of the face plate—without touching the nozzles—are acceptable.

• Purge heads and wipe with a clean lint free cloth – DO NOT use flush on cloth.
• Ensure nozzle status is good before switching printer off.
• Ensure valves are correctly closed, allowing no air or leaks.
• Ensure the carriage is lowered in the park position.
• Switch OFF power to the machine.

NOTE: NUtec does not recommend built‑in flushing systems for overnight storage. Do not fill the print heads with flush.

• Purge heads and wipe with a clean lint free cloth – DO NOT use flush on cloth.
• Ensure nozzle status is good before switching printer off.
• Ensure valves are correctly closed.
• Ensure the carriage is lowered in the park position.
• Switch OFF power to the machine.

NOTE: NUtec does not recommend built‑in flushing systems for weekend storage. Do not fill the print heads with flush.

• Use NUtec CMF Cleaning Solution.
• Store heads with flush inside: purge and fill with CMF solution via built‑in purge or manual flush. (If manual flush isn’t possible, flush the complete ink line.)
• Ensure valves are correctly closed.
• Ensure the carriage is lowered in the park position.
• Switch OFF power to the machine.
• Recommended: check subtank for sedimentation monthly; if present, clean with syringe and lint‑free cloth.

• Purge heads and wipe with lint free cloth – DO NOT use flush on cloth.
• Perform nozzle status.

• Use NUtec CMF Cleaning Solution.
• Remove ink from main tanks and clean tanks with CMF solution and lint‑free cloth.
• Fill tanks with CMF solution.
• Purge WHITE ink line completely until flush runs clear.
• Ensure valves are correctly closed.
• Ensure the carriage is lowered in the park position.
• Switch OFF power to the machine.

• Remove CMF from main tanks and refill with ink.
• Purge at least 300 ml of ink through lines to clear residual flush.
• Install new print‑head filter.
• Remove air via machine “bleed” function.
• Purge as per “Daily” start‑up above.

• Use NUtec CMF Cleaning Solution.
• Remove ink from main tanks and clean with CMF solution and lint‑free cloth.
• Fill tanks with CMF solution.
• Purge COLOURS & CLEAR ink lines completely until flush runs clear.
• Ensure valves are correctly closed.

• Remove CMF from main tanks and refill with ink.
• Purge at least 300 ml of ink through lines to clear residual flush.
• Remove air via machine “bleed” function.
• Purge as per “Daily” start‑up above.

For further enquiries please contact the NUtec Digital Ink Technical Team at support@nutecdigital.com
Technical Department
NUtec Digital Ink Proprietary Limited

This information is based on present knowledge and does not guarantee specific product features nor establish a legal contract. NUtec Digital Ink is not responsible for print‑head damage resulting from improper capping fluids, flushing, or maintenance. Standards and compliance statements are valid for one year from publish date and may change with formulation updates. E&OE

UV009 | 18 May 2020 | R3