User’s Guide Zephyr TS
Safety instructions
AP-75390 - Revision 1.0 15
1
1.3 UV-curing system
UV-lamps hazards:
The UV-curing system generates hazardous amounts of thermal and UV-energies.
Radiation range of Mutoh UV-lamp: 200-460nm. Special protection for eyes and skin is
essential. Long sleeved work clothes and gloves are essential to reduce the skin's
exposure to the UV emissions.
Always wear safety glasses to protect against the radiation range of the UV-lamp.
Recommended are the glasses of 3M type 2802. Eye damage and burning of the skin can
occur with even brief direct exposure to UV light.
NEVER LOOK DIRECTLY IN THE UV-LAMP.
The exposure to UV-light is the worst for individuals in seated position. (Table height of 117
cm). Do not sit within 3 meters of the printer and do not look at the UV lamps if your eyes
are positioned below the level of the printer table. Serious injuries can result from
prolonged exposure, especially when unshielded.
UV lamps operate at very high temperatures (approx. 800°C). Therefore, never touch a
lamp which has been in operation. Let the lamp cool before any maintenance. Skin contact
with the UV lamps must be avoided. Compounds from the skin when lamps are hot will
form permanent etching on the quartz surface that can decrease the UV energy
transmission. Installation of the lamp: before the installation make sure that the quartz
surface is clean. Use a damp cloth (if necessary with a small amount of isopropanol) to
degrease the quartz surface. Never touch the quartz surface with bare hands. This can
cause changes in the spectrum of the lamp.
Mercury: The UV lamp contains a small amount of mercury which is toxic when inhaled or
ingested. If a cold lamp is broken, carefully clean up the spill with sulphur and then dispose
of it, according to local regulations regarding mercury disposal. When a lamp in operation
breaks, the mercury will be evaporated and removed by the forced ventilation.
Ozone: Ozone is a toxic gas which the UV lamps create. As the lamp warms up, it briefly
passes through a section of the light spectrum which excites oxygen molecules enough to
create ozone. Once a UV lamp has completely warmed up, only very small amounts of
ozone are present. This amount will be fully removed by the forced ventilation.
Measurements show that the generated amount of ozone is below the exposure limits.
Maintenance:
Always wear glasses, gloves and protective clothing to protect against the ink and the
UV-emissions
When maintenance station is open to clean the heads, do not touch the UV lamp as it
can be hot.
Use gloves to remove cured ink in maintenance station or somewhere else
Dispose the cured ink according to federal, state, provincial and local regulations
Important
Handle both the UV-inks and the UV-curing lamps correctly, it can be harmful.
Always print with closed covers. Never look directly into the UV-lamp during
operation.