Vii. Safety Instructions; Surface Mode: Safe Tips - Cello OMNI User Manual

User Manual of Cello OMNI 4-in-1 300W

VII. Safety Instructions

Surface Mode: Safe Tips

What is UV-C Disinfection Lamps?
UV-C disinfection lamps emit radiation in the UV-C portion of the ultraviolet (UV) spectrum, which
includes wavelengths between 100 and 280 nanometers (nm). The lamps are used in a variety of
applications where disinfection is the primary concern, including air and water purification, food and
beverage protection, and sterilization of sensitive tools such as medical instruments. Germicidal light
destroys the ability of bacteria, viruses, and other pathogens to multiply by deactivating their
reproductive capabilities. The average bacteria may be killed in 10 seconds at a distance of 6 inches from
the lamp. The wavelength with the greatest effectiveness is 253.7 nm, which defines the germicidal
lamp category with optimized wavelength for maximum absorption by nucleic acids.
Hazard and Risks from UV-C Disinfection Lamp Radiation
UV-C radiation (UVR) used in most disinfection bulbs is harmful to both skin and eyes.
UVR is not felt immediately; in fact, the user may not realize the danger until after the exposure has
caused damage. Symptoms typically occur 4 to 24 hours after exposure.
The effects on skin are of two types: acute and chronic. Acute effects appear within a few hours of
exposure, while chronic effects are long-lasting and cumulative and may not appear for years. An acute
effect of UVR is redness of the skin called erythema (similar to sunburn). Chronic effects include
accelerated skin aging and skin cancer.
UVR is absorbed in the outer layers of the eye – the cornea and conjunctiva. Acute overexposure leads
to a painful temporary inflammation, mainly of the cornea, known as photokeratitis. Subsequent
overexposure to the UV is unlikely because of the pain involved. Chronic exposure leads to an increased
risk of certain types of ocular cataracts.
Working unprotected for even a few minutes can cause injury. It is possible to calculate the threshold
for acute effects and to set exposure limits. It is not possible, however, to calculate threshold for chronic
effects; therefore, because no exposure level is safe, exposure should be reduced as much as possible.
10 CFR 851 mandates the use of the threshold limit value (TLV) exposure limits established by the
American Conference of Governmental Industrial Hygienists (ACGIH). The exposure limit for a germicidal
lamp is 6 millijoules per square centimeter. At this level, detectable molecular damage appears to be
fully repaired within 24 hours. For the case of continuous exposure for longer than 8 hours, special care
needs to be taken.
Do not remove the cover of the AIR unit when the power is on
Due to the potential danger of UVC, do not remove the cover of this machine when the power is on.
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06/16/2020