Argox R Series - Manual (Page 52)

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Cleaning Material
Surface of print head’s heating element is very fragile. To
prevent from any possible damage, please use soft cloth/ cotton
buds with “Ethanol” or “IPA” to clean print head surface.
It’s strongly recommended to wear hand gloves during cleaning
progress.
Do not touch print head surface by bare hands or with any hard
equipment.
Water or spit should be kept away in case of corrosion on
heating elements.
Cleaning Direction
When cleaning the print head, always wipe in One-Way
Direction - from Left to Right only, or, from Right to Left only, to
clean “Heating Line” of print head gently without excessive
stress.
Do not wipe back and forth, to avoid dust or dirt on cleaning
cotton would be attached onto print head again.
Special Caution:
Warranty of print heads will be void if print head serial number is
removed, altered, defected, or made illegible, under every
circumstance.