If a nozzle or group of nozzles do not recover, it may be necessary to recover the nozzle by manual dry printhead swabbing.
Safety glasses with side shields
Gloves (for example: Ansell Microflex 93-260)
Foam Tipped Swab
Cloth-Poly Wipe 10cm x 10cm (lint-free)
IMPORTANT
Do NOT use flush liquid for daily printhead maintenance. It may contribute to increased ink/flush pollution levels on the printheads and the underside of the carriage.
CAUTION
The underside of the UV lamps may be hot, avoid touching them.
NOTE
To help locate nozzles that need recovering remove the nozzle check print from the vacuum table and place it on the floor under the carriage in the maintenance area. Make sure it is in the correct orientation so the colors are aligned. The print represents a projection of the jetting performance of each printhead. This makes it easier to trace a nozzle or group of nozzle outs back to the area on the actual printhead nozzle plate that requires swabbing.
IMPORTANT
Keep swabs and lint-free cloth clean prior to use.
Do not let the seam on the foam of the swab contact the bottom of the printhead. This can damage the printhead. See the next figure.
IMPORTANT
When contamination is stuck to the nozzle plate of the printhead (the surface feels rough), use Isopropyl alcohol to wet the cloth before wiping the printhead.
IMPORTANT
Never use the same swab or cloth on two different color channels.
Never "scrub" the printhead with a swab as this will drag debris into other nozzles.
If necessary, perform an automatic maintenance (AMS) procedure on the printheads that still show dropped nozzles.
NOTE
If a nozzle does not recover through this manual dry printhead swabbing procedure, it may be necessary to recover the nozzle by a manual ink purge and swabbing procedure. See: Manual Ink Purge and Printhead Swabbing.